Title/Abstract: (head or helmet) and mounted display Patent Number 5367614 Issue Date 1994-11-22 Assignee Name GRUMMAN AEROSPACE CORPORATION State / Country NY Classification 395/119 395/155 Title Three-dimensional computer image variable perspective display, display system Abstract A three-dimensional computer image variable perspective display, display system provides for the real-time perspective control of a three-dimensional computer generated image controlled by the headhead movements of a computer operator viewing the image. The system includes an ultrasonic transmitter module worn on the headhead of the computer operator, a set of ultrasonic receivers mounted, mounted on or near the computer display, display monitor, and a computer interface unit. The ultrasonic transmitter transmits sound waves towards the display, display monitor which are detected by the ultrasonic receivers and processed by the computer interface unit. The computer interface unit calculates the elapsed times between the transmission and reception of the sound waves and converts this information into digital data words. The quantative magnitude of these data words represent in direct proportion, the instantaneous distance between the ultrasonic transmitter and the ultrasonic receivers. This distance information interacts with rotational axis algorithms used to control the three-dimensional display, display to cause the image to change it's perspective view in correspondence to the movement of the computer operator's headhead, in a manner exactly analogous to viewing three-dimensional objects in nature. Patent Number 5348477 Issue Date 1994-09-20 Assignee Name CAE ELECTRONICS, LTD. State / Country CAX Classification 434/43 434/40 434/44 Title High definition television headhead mounted, mounted display, display unit Abstract An optical image is generated by an image source and is transmitted to an optical assembly by a fiber optic cable or cables. The optical assembly includes a transmission lens or lenses, rear projection screens and an eyepiece. By using a rear projection screen in the optical assembly, a non-pupil forming arrangement is provided. Patent Number 5347400 Issue Date 1994-09-13 Assignee Name ~Individually Owned Patent State / Country CA Classification 359/815 345/7 345/8 359/630 359/742 359/813 Title Optical system for virtual reality helmet, helmet Abstract The present invention provides an optical system for a virtual reality headhead mounted, mounted display, display with improved image quality, enlarged field of view, and enhanced adjustability. In one embodiment, the optical system comprises a housing coupled to the frame of the headhead mounted, mounted display, display, a pair of displays mounted, mounted to the housing each defining a visual plane, and first and second lenses mounted, mounted between each of the displays and the user's eyes. The lenses are mounted, mounted to the housing such that each lens is disposed at an angle of between 1.degree. and 15.degree. relative to the visual plane. The lenses are also mounted, mounted such that the interoptic distance between the lenses may be adjusted. The optical system also has a unique lens construction including a standard Fresnel lens mounted, mounted in parallel to a low-diffraction Fresnel lens, resulting in substantially reduced diffractive interference. Patent Number 5341242 Issue Date 1994-08-23 Assignee Name ELBIT LTD. State / Country ILX Classification 359/631 359/365 359/633 359/637 359/858 Title Helmet, Helmet mounted, mounted display, display Abstract A display, display, for example, for a visor attached to a helmet, helmet, the visor having a partially reflecting semi-transparent portion in the view of the wearer and an optical projector for projecting an image onto the semi-transparent portion for reflection therefrom. The semi-transparent portion has a relatively higher reflectivity in a central area thereof and a relatively lower reflectivity in an annular area outside the central area. In one aspect of the invention, the headhead mounted, mounted display, display includes a projector having a display, display source whereon an image is formed and an optical system for focusing the image at separate sagittal and tangential foci between the image-forming surface and the semi-transparent portion. Patent Number 5334991 Issue Date 1994-08-02 Assignee Name REFLECTION TECHNOLOGY, INC. State / Country MA Classification 345/8 345/7 359/201 359/630 Title Dual image headhead-mounted, mounted display, display Abstract A mechanical scanning dual-image display, display device utilizes two separate scanning mirror mechanisms with a common control that forces the scanning mirrors to move in opposition, and substantially cancel reaction forces. This cancellation is accomplished by providing each of the mirrors with an individual drive mechanism, commonly controlling the two drive mechanisms and arranging the geometry of each display, display so that the reaction forces acting on the overall display, display as a result of the mirror motion cancel. In a second embodiment, vibrations are reduced by driving both mirror assemblies from a common source. More specifically, both mirrors are oscillated by an eccentric and linkage mechanism driven by a common motor. Patent Number 5329276 Issue Date 1994-07-12 Assignee Name KABUSHIKI KAISHA YASKAWA DENKI State / Country JPX Classification 340/870.31 273/438 341/20 345/157 345/161 364/190 Title Multidimensional signal input device Abstract A device is provided which allows multidimensional information signals concerning coordinates, directions and the like of an object to be input to a CPU exactly as intended by an operator on a non-contact basis, and without restrictions on the place where it is used. Angular velocity detectors (4), (5), and (6) are provided on the X-axis, Y-axis, and Z-axis, orthogonal to each other of an operation unit which is shaped to be easily gripped by an operator or to be mounted, mounted on an articulation, shoulder, or headhead. The operation unit (1) is rotated and moved and, when the operator wishes to input information, push-buttons (2) and (3) provided on the operation unit (1) are turned on/off to command the start or stop of the counting of the output of the angular velocity detectors (4), (5), and (6). In response to the command, the angular velocity signals of the axes are converted into information to be input to the CPU through V/F converters, pulse conversion circuits, gate circuits, and counter circuits. The motion of an operator can be commanded as the operator intends in arbitrary space, thereby facilitating the movement of a robot arm and the rotation and movement on a display, display screen of a three-dimensional CAD system or graphic system. In addition, a person who has a handicap in his or her hand or leg can operate and issue commands. Patent Number 5325386 Issue Date 1994-06-28 Assignee Name BANDGAP TECHNOLOGY CORPORATION State / Country CO Classification 372/50 359/214 359/215 372/45 Title Vertical-cavity surface emitting laser assay display, display system Abstract A visual display, display system is disclosed which utilizes one- and/or two-dimensional arrays of visible emitting vertical-cavity surface-emitting lasers (VCSELs) in order to provide a desired visual display, display within an observer's field of view. Sweep and subscanning techniques are employed, individually or in combination, to create a full M.times.N image from 1.times.L or K.times.L arrays of VCSELs, where M and N are multiple integers of K and L, respectively. Preferably, the VCSELs are contained within a display, display housing which may be attached to the headhead of the user by an attachment mechanism or may alternatively be hand held or mounted, mounted to a surface. The circular symmetry and low divergence of the emitted VCSEL radiation as well as the availability of multiple wavelengths, particularly, red, blue and green, allow high resolution monochrome or color images to be generated. Patent Number 5321416 Issue Date 1994-06-14 Assignee Name VIRTUAL RESEARCH SYSTEMS State / Country CA Status CC Classification 345/8 348/61 348/121 348/795 Title HeadHead-mounted, mounted visual display, display apparatus Abstract A headhead-mounted, mounted visual display, display apparatus for displaying an image generated by an image generator to a wearer of the apparatus. The visual display, display apparatus comprises a helmet, helmet (10) comprising a shell and a headband (66) engaged to an interior surface of the shell; an adjustment mechanism (90) mounted, mounted to an exterior surface of the helmet, helmet for adjusting the size of the headband; and a video display, display (18,20) housed within the helmet, helmet and connected to the image generator for displaying the image. In a preferred embodiment the adjustment mechanism includes a knob (90) mounted, mounted on an exterior surface of the shell and connected to the headband by a rotatable shaft (99) disposed through the shell between the knob and the headband. Patent Number 5320538 Issue Date 1994-06-14 Assignee Name HUGHES TRAINING, INC. State / Country MN Classification 434/307R 340/686 345/8 348/14 348/123 364/578 395/152 434/43 434/69 434/234 Title Interactive aircraft training system and method Abstract The system includes a computer (20), a detector (40) for detecting and tracking headhead orientation and headhead movement of an individual, a pair of tactile gloves (42, 44) which are donned by the individual (51) for detecting and transmitting to the computer (20) as input data orientation and movements of the hands of the individual inserted in the tactile gloves (42, 44), a stereoscopic, headhead-mounted, mounted display, display (31), a subsystem for enabling the computer to generate a stereoscopic image of the training environment, a subsystem for causing the stereoscopic image of the training environment to be displayed and changed by the computer relative to input data received by the computer relating to the headhead orientation and headhead movement of the individual, relative to input data received by the computer relating to orientation and movement of the hands of the individual inserted in the tactile gloves, and relative to input data reflecting realistic changes in the training environment that would be perceived by the individual if interacting with an identical, non-simulated, training environment. An object (43) representative of a tool is adapted for transmitting tactile information to the computer (20). Sounds representative of the environment are transmitted to the individual (51) through the earphones (33). Vocal emanations of the individual are detected by a microphone (48). System peripheral items (31, 33, 40, 42, 43, 44, 48) are connected to the computer (20) by means of wires (60, 61, 62, 63, 64, 65). The computer (20) interfaces and incorporates an environment simulation and modeling subsystem (22), an image generation component (24), a user interface management component (26), and a component for formulating and transmitting instructional input (28). Patent Number 5320534 Issue Date 1994-06-14 Assignee Name UNITED STATES OF AMERICA, AIR FORCE State / Country AZ Classification 434/44 273/434 345/8 348/115 348/121 434/38 Title Helmet, Helmet mounted, mounted area of interest (HMAoI) for the display, display for advanced research and training (DART) Abstract The Display, Display for Advanced Research and Training (DART), a wrap-around display, display system for presenting out-the-window visual imagery in a flight simulator, is substantially improved by adding a helmet, helmet mounted, mounted display, display of modest field-of-view that displays only an area-of-interest view (HMAoI) The HMAoI display, display displays a modest field-of-view, high resolution image, according to the headhead position of a simulator pilot as determined by a helmet, helmet mounted, mounted position indicator, that replaces the lower resolution view provided by the DART for the same image. The corresponding DART image is not displayed to prevent displaying a confusing view. The remaining DART display, display provides a peripheral view for a simulator pilot. The imagery provided through the HMAoI may be a two part image comprising a very high resolution central image surrounded by a lower, but still higher than the DART, resolution image. Patent Number 5319490 Issue Date 1994-06-07 Assignee Name HUGHES TRAINING, INC. State / Country CA Classification 359/209 359/203 359/630 385/116 Title Helmet, Helmet mounted, mounted display, display including synchronously moving tilted mechanisms Abstract An improved helmet, helmet mounted, mounted display, display. The inventive display, display includes a laser and a fiber optic cable having an array having two sets of rows of optical fibers and being mounted, mounted to receive input from said laser at a input end and to illuminate a screen with light from said laser via an output end thereof. A particularly novel aspect of the invention is the provision of a first mechanism at the input end of the fiber optic cable for illuminating a first set of rows of fibers in the array with light from the laser during a first scanning interval and for illuminating a second set of rows of fibers in the array with light from the laser during a second scanning interval. A second tilting mechanism is mounted, mounted at the output end of the fiber optic cable for directing illumination from the first set of rows of fibers in the array to a screen during the first scanning interval and for directing illumination from the second set of rows of fibers in the array to the screen during the second scanning interval. An actuator is provided for moving the first and second tilting mechanisms synchronously. In a specific implementation, the first and second tilting mechanisms are glass plates and the actuator is a piezo-electric transducer. By repeating a scan over a second set of fibers, the visibility of dead spots in the output image from broken fibers is mitigated. Patent Number 5309913 Issue Date 1994-05-10 Assignee Name CLEVELAND CLINIC FOUNDATION State / Country OH Classification 128/653.1 606/130 Title Frameless stereotaxy system Abstract A patient's headhead is anchored (16) at one end of a patient support (10). An array of receivers (50) are mounted, mounted on a frame (12) which is fixed to the patient support. The frame carries at least one reference transmitter (52). A wand (42) has at least two emitters (44, 46) mounted, mounted thereto. By measuring relative travel time of the signals from the wand emitters to the receiver array and comparing the travel time with travel time over a known distance from the reference transmitter to one or more of the receivers, the position of the wand in a coordinate system of the patient support is determined (80). A three-dimensional array of diagnostic image data was taken through the anchored portion of the patient and at least three markers (114) affixed to the patient. By positioning the wand on the markers after the patient is secured to the patient support, a transform (110) between the patient support coordinate system and the image data coordinate system is derived. Once the relationship between the coordinate systems is known, the surgeon can use the wand to select locations and orientations on a surface of the patient and retrieve corresponding portions of the image data for display, display on video monitors (30). Patent Number 5309169 Issue Date 1994-05-03 Assignee Name HONEYWELL INC. State / Country NJ Classification 345/8 345/7 359/14 359/632 Title Visor display, display with fiber optic faceplate correction Abstract A display, display system for use with headgear of a user includes a visor display, display mounted, mounted to the headgear so as to define a cavity between the headhead of the user and an inner surface of the visor display, display. The visor display, display has at least one partially reflective aspheric surface section directed inward to the user. The partially reflective aspheric surface is at a position which intercepts a forward line of sight of at least one eye of the user and which is at a tilt angle with respect to a plane that is substantially transverse to the forward line of sight. A shallow packaged image source is positioned above an eye within the cavity at a predetermined angle with the plane which is substantially transverse with a forward line of sight. A fiber optic faceplate having a first and second end section is coupled to the image source at the first end section. The second end section has an aspherically shaped surface so as to project an image from the image source on the aspheric surface section of the visor display, display for reflection of the image to the eye of the user. The shape of the aspheric surface section being determined by a shape of the partially reflective aspheric surface, the tilt angle and the predetermined angle. Patent Number 5303085 Issue Date 1994-04-12 Assignee Name ~Individually Owned Patent State / Country UT Classification 359/631 385/116 385/120 Title Optically corrected helmet, helmet mounted, mounted display, display Abstract The present invention eliminates the relay lens systems found in conventional helmet, helmet mounted, mounted displays (HMDs) by removing field distortions and aberrations with a contoured fiber optic faceplate placed in close proximity to a liquid crystal display, display (LCD) or cathode ray tube. The optical system typically consists of a spherical dielectric or holographically made collimator-combiner, a dielectric or holographically made fold mirror, and a contoured fiber optic faceplate. The fold mirror is flat, and the collimator-combiner is made by coating a spherical eye glass blank. The system is configured as a folded and tilted catadioptric projector with the novel feature being the contoured faceplate. There are no dispersive elements in the imaging assembly which means it can be completely polychromatic (full color) without the need for additional color correction optics as found in all refractive color systems. When designed for full color, highest brightness, and see through capability it must be made with two or three narrow spectral and angular sensitive coatings on the fold mirror and on the collimator-combiner. These coatings allow the use of a tilt of the collimator-combiner with respect to the fold mirror which induces a small amount of astigmatism and keystone distortion but at the same time allows image light to pass through the folded optics to the eye with a minimum of loss. The elimination of a corrective refractive lens relay system makes this design polychromatic, less expensive, and lighter in weight, compared to a similar system with an achromatized and corrected refractive lens. Patent Number 5299063 Issue Date 1994-03-29 Assignee Name HONEYWELL INC. State / Country MN Classification 359/631 345/7 348/115 359/434 359/630 Title Cross projection visor helmet, helmet mounted, mounted display, display Abstract A helmet, helmet mounted, mounted display, display utilizing a pair of image sources mounted, mounted low on the helmet, helmet of a pilot and projecting an image across in front of the pilot's face to the opposite partly reflecting portions of the visor of the helmet, helmet to create an image for each of the pilot's eyes, which image is combined with the scene being viewed through the visor by the pilot. Patent Number 5293877 Issue Date 1994-03-15 Assignee Name SHERWOOD IMS, INC. State / Country CA Classification 128/736 374/133 Title Body temperature thermometer and method fo measuring human body temperature utilizing calibration mapping Abstract A body temperature thermometer has a probe headhead assembly (8) which includes a first sensor (10), such as a thermopile, for generating a first output signal representative of an amount of infrared radiation impinging thereon The probe headhead assembly further includes a waveguide (16) and a surrounding hollow probe (14) for receiving infrared radiation emitted by a biological surface tissue, such as the external ear canal and tympanic membrane of a patient, and directing the radiation to the first sensor. A second sensor (12) is mounted, mounted in the probe headhead assembly for generating a second output signal representative of a temperature of the first sensor. A third sensor (26) is thermally coupled to the waveguide for providing a third output signal representative to the temperature thereof. A processor (30) is connected to the sensors for processing the output signals to determine a body temperature of the patient utilizing a calibration mapping of a plurality of target temperatures to corresponding output signals taken over a predetermined range of ambient temperatures. A display, display (34) is driven by the processor for providing a user with a visual indication of the determined body temperature. Patent Number 5291184 Issue Date 1994-03-01 Assignee Name YAZAKI CORP. State / Country JPX Classification 345/7 359/40 359/630 359/640 Title HeadHead up display, display for a vehicle having a liquid crystal indicator and a reflecting prism Abstract Display, Display apparatus for a vehicle in which the quality of the display, display image of the indicator is enhanced and displayed content of the display, display image can be changed without restraint. The display, display apparatus for a vehicle consists of a indicator and a prism which are integral with each other. On a third surface of the prism where the prism is held in contact with the indicator is formed a transparent electrode. Along an edge portion of a second surface is printed a spacer and a cover grass is mounted, mounted thereon. On an inner surface of the cover glass is formed a dot-matrix-type transparent electrode. Further, between the surface and the cover glass is sealed a nematic liquid crystal to form a twisted nematic cell (TN). On the cover glass is further disposed a polarizing plate, a dispersion plate, and a backlight. Patent Number 5281960 Issue Date 1994-01-25 Assignee Name SILHOUETTE TECHNOLOGY, INC. State / Country NY Classification 345/31 345/8 345/115 345/151 Title Helmet, Helmet mounted, mounted display, display Abstract An optical display, display system is disclosed having a preferred application in a helmet, helmet mounted, mounted heads-up display, display. The display, display system includes an image source (42-46) for generating an image which includes a plurality o fields sequentially displayed by the image source to form the image with a two-dimensional array of pixels forming each field and the fields having a spatially modulated light intensity. An image display, display (50) is coupled to the image source for displaying the fields. The image display, display produces for each field a two-dimensional display, display having a fixed number of light emitting points (65) which are disposed along each dimension of the two-dimensional array with each light emitting point being spaced apart from adjacent light emitting points by a fixed distance. An actuator (52) is provided for moving the light emitting points in unison in a repeated pattern relative to a field of view of the displayed image with motion of each of the light emitting points along two axes during the repeated pattern delineating an area which is a fraction of an area of the displayed image produced by the image display, display. Movement of the light emitting points through successive positions of the repeated pattern is synchronized with the successive display, display of individual fields by the image source. Patent Number 5281957 Issue Date 1994-01-25 Assignee Name SCHOOLMAN SCIENTIFIC CORPORATION State / Country MO Classification 345/8 348/53 359/466 Title Portable computer and headhead mounted, mounted display, display Abstract A portable or "lap-top" computer includes an associated headhead mounted, mounted display, display. The display, display is constructed in a manner similar to a pair of eyeglasses but with liquid crystal display, display screens replacing or forming a portion of the eyeglass lenses. The display, display screens can be either opaque or light transmitting, and can be hinge mounted, mounted to the glasses frame so that they can be swung up and out of the field of vision of the user. Specialized uses for the portable computer and headhead mounted, mounted display, display include a computer desk for secretarial workstations and the like, a research library workstation, and a moving map installation in an automobile or airplane. Patent Number 5266930 Issue Date 1993-11-30 Assignee Name YAZAKI CORP. State / Country JPX Classification 345/8 359/630 359/632 Title Display, Display apparatus Abstract The present invention is directed to a display, display apparatus which can display, display information well and does not compromise the feel of a helmet, helmet in which the display, display apparatus is incorporated. The helmet, helmet has a front opening formed therein and has a transparent shield mounted, mounted thereon so as to cover the front opening. The display, display apparatus incorporates a display, display unit disposed on the inner side of the helmet, helmet for displaying information thereon. Display, Display light from the display, display unit is reflected toward a visual point position by an inner face of the shield so that an observer visually observes a virtual image of the display, display information of the display, display unit from within the helmet, helmet through the shield. The display, display unit is disposed on the inner side of a chin portion of the helmet, helmet so as to not to create any obstruction to the observer. Patent Number 5257094 Issue Date 1993-10-26 Assignee Name ~Individually Owned Patent State / Country NY Classification 359/13 359/14 359/22 359/24 Title Helmet, Helmet mounted, mounted display, display system Abstract A holographic display, display system is disclosed. Utilization of holographic elements provides good transmissivity with respect to both outside stimulus and the superimposed display, display information. Full color display, display is enabled by a composite spherical lens and the efficient optical coupling of the display, display information and the pupil allows the weight of the helmet, helmet with the display, display system to be kept to a minimum. Patent Number 5253108 Issue Date 1993-10-12 Assignee Name BRITISH AEROSPACE State / Country GBX Classification 359/482 359/471 Title Helmet, Helmet-mounted, mounted display, display Abstract An optical arrangement for a helmet, helmet-mounted, mounted display, display for providing binocular presentation to a pilot from a single display, display source or for superimposing the images from two display, display sources on his helmet, helmet-mounted, mounted display, display. In one embodiment a single display, display source 1 provides an image which is alternately directed between left and right eyes of the pilot by means of one scanning mirror 4 and two fixed mirrors 5a and 5b. An iris 3 opens and closes in synchronism with the movement of the scanning mirror 4 in order to prevent image distortion. Because only one display, display source is required, the weight of the arrangement is kept to a minimum. In another embodiment, using similar core elements the images from two display, display sources are alternately projected on to the pilot's visor by means of similar fixed mirrors 5a and 5b and a scanning mirror 4, but using two iris' 3+ and 3" synchronised to the mirror movements one in each optical path from display, display source 1' (or 1") to fixed mirror 5a (or 5b). Patent Number 5251511 Issue Date 1993-10-12 Assignee Name KOMET PRAZISIONSWERKZEUGE ROBERT BREUNING GMBH State / Country DEX Status CC Classification 82/1.2 408/16 408/152 408/153 408/179 408/181 Title Tool headhead for use in machine tools Abstract The invention concerns an adjustable tool for use in machine tools, with a slide (14) which can be fitted with at least one cutting tool and which can be displaced relative to the rotating main body (10) perpendicularly to the axis of rotation. The invention also calls for a device (20) for the direct measurement of the displacement of the slide (14), the slide being fitted with an electronically read measurement scale (24). This device comprises battery-powered data-processing electronics (20) and is located inside the main body (10). The displacement reading can be presented on a digital display, display (26) which is also mounted, mounted in the tool headhead. Patent Number 5251333 Issue Date 1993-10-12 Assignee Name ~Individually Owned Patent State / Country ILX Classification 2/6.2 2/6.5 359/630 Title Helmet, Helmet mounted, mounted display, display device Abstract A helmet, helmet mounted, mounted display, display device including an opaque display, display element arranged to be mounted, mounted on a helmet, helmet visor outside of a wearer's usual instantaneous field of view and a display, display control circuit disposed remotely from the display, display element and coupled thereto by signal transmission apparatus. Patent Number 5243860 Issue Date 1993-09-14 Assignee Name WHESSOE PLC State / Country FRX Classification 73/291 33/715 33/716 33/720 318/642 374/142 Title Liquid level measurement Abstract The invention relates to apparatus (1) for monitoring the level of a liquid within a vessel (3). The apparatus comprises a surface following sensing headhead (5) adapted to follow the surface (7) of the liquid. A gauging headhead (9) is mounted, mounted outside the vessel (3) at pre-determined fixed distance from the vessel (3). Rotatably mounted, mounted within the gauge headhead (9) is a reel (11) which has wound upon it a flexible elongate tape (13) having its free end (15) connected to the sensing headhead (5). The flexible tape (13) passes along a defined path of fixed length from the reel (11) to a reference point above the vessel and includes a plurality of level markers (17) which are equally spaced one from another along the length of the tape (13) each pair of adjacent markers (17) being of pre-determined fixed distance apart. A stepper motor (19) is mounted, mounted within the gauging headhead (9) and coupled to the reel (11) to rotate the reel (11) about its axis in two opposite directions. A step counter (21) is coupled to the stepping motor (19) to count the number of steps stepped by the motor (19) in the direction in which the steps are taken. A guide (23) has mounted, mounted within it a marker (25) through which the tape (13) passes to detect the presence or absence of the marker (17). A microprocessor (27) is mounted, mounted within the gauging headhead (9) and is coupled to the marker detector (25) and the step counter (21) to calculate and display, display the exact level of the liquid by calculating the Ullage. Patent Number 5237551 Issue Date 1993-08-17 Assignee Name RICOH CO., LTD. State / Country JPX Classification 369/54 Title Apparatus measuring an output of a disk drive Abstract An apparatus for measuring an optical output of an optical pickup device disposed in an optical disk drive unit has a dummy cartridge approximately of the same type as a disk cartridge mounted, mounted to the optical disk drive unit; a light-receiving element disposed in a predetermined position of the dummy cartridge; an optical level measuring display, display device for inputting the light-receiving signal thereto and displaying a measured value of the optical output; and a controller for controlling an operation of the optical disk drive unit such that this optical disk drive unit performs a predetermined operation for measuring the optical output. The above measuring apparatus may further comprise a connector device for externally outputting the light-receiving signal of the light-receiving element. In this case, the optical level measuring display, display device inputs the light-receiving signal thereto through the connector device. An apparatus for measuring a magnetic field distribution of a magnetic headhead disposed in a magnetooptic disk drive unit and generating an auxiliary magnetic field is also shown. Patent Number 5221083 Issue Date 1993-06-22 Assignee Name SEGA ENTERPRISES, LTD. State / Country JPX Classification 273/85CP 273/85G 273/DIG28 353/37 Title Medal game machine Abstract A medal game machine adapted to use a multiplicity of medals and to apportion them to the player who bet medals and won in a game. The machine comprises an enclosure having an open central portion on its front side, a display, display unit mounted, mounted in the center of the headhead portion of the enclosure, a flat half mirror located below the display, display unit, a georama forming a background, illuminators equipped with dimmers for illuminating the georama, and satellites mounted, mounted outside the front of the enclosure. The half mirror is inclined at about 45.degree. and extends downwardly toward the front of the enclosure from a high position on the rear surface of the enclosure. The georama is fixedly mounted, mounted on the rear surface of the enclosure behind the position at which a virtual image of the picture on the display, display unit is created by the half mirror. The satellites can be operated by human players. Patent Number 5212871 Issue Date 1993-05-25 Assignee Name ~Individually Owned Patent State / Country NY Classification 33/555.4 33/514 128/777 Title Measuring device for an orthodonitic band Abstract A device for measuring the circumference of a tooth or other object, having a longitudinally extending handle with a first end, a second end, an exterior and a hollow interior. A rotatably mounted, mounted headhead portion is disposed at the first end of the handle, and has an aperture which connects the hollow interior to the exterior of the handle. The headhead portion is adjustable to locate the aperture at a particular angle with respect to the longitudinal axis of the handle. A band is provided which has two ends and a central portion. The central portion is located exteriorly of the handle and forms a loop to be placed around the tooth or other object. The ends pass through the aperture of the headhead portion into the hollow interior. A tightening lever is pivotally connected to the handle and the ends of the band for retracting the band through the aperture into the hollow interior, to tighten the loop around the tooth or other object to be measured. A display, display is mounted, mounted on the exterior of the handle and coupled to the tightening lever for indicating the circumference of the tooth or other object to be measured. Patent Number 5205030 Issue Date 1993-04-27 Assignee Name YOSHIKAWA IRON WORKS LTD. State / Country JPX Classification 29/707 29/243.5 29/243.53 29/714 29/715 Title Rivet headhead caulking machine Abstract A caulking machine has a column with a table for placing a work piece having rivet shanks passing therethrough, a cylinder vertically movably mounted, mounted on the column, a piston shaft fixedly mounted, mounted in the cylinder so as to be movable together with the cylinder, a spindle rotatably mounted, mounted in the piston shaft, and a rivet headhead forming tool having a forming shaft and mounted, mounted to the bottom end of the spindle. The forming shaft is adapted to be pressed against the rivet shank in the work piece by operating the cylinder, and can be rotated by a motor via the spindle to form a rivet headhead on the rivet shank. The machine has a rotation detector for determining whether a rivet headhead is being formed or the machine is idling by measuring the rotation of the forming shaft. If it is determined that the machine is idling, a display, display device can be activated and the operation of the machine can be stopped. Patent Number 5200827 Issue Date 1993-04-06 Assignee Name VARO INC. State / Country TX Status CC Classification 348/216 89/41.05 224/181 359/146 Title HeadHead mounted, mounted video display, display and remote camera system Abstract A video system is disclosed having a weapon-mounted, mounted video camera (12) transmitting video signals to a remotely located video display, display (14). The video display, display is mounted, mounted to the helmet, helmet (40) of a soldier (36), and includes a sight reticle (50) superimposed on the image of the target (46) so that the soldier (36) can aim the weapon (38) by moving it until the target object (46) as displayed by the video display, display (14) is aligned with the sight reticle (50). A low probability of transmission interception of the video signals is accomplished by using a nonvisible light carrier wavelength in free space, which wavelength is characterized by a high degree of absorption due to atmospheric water vapor. Patent Number 5189512 Issue Date 1993-02-23 Assignee Name CAMAIR RESEARCH, INC. State / Country CA Classification 348/838 345/8 348/115 348/121 359/610 Title Helmet, Helmet integrated display, display system Abstract A Helmet, Helmet Integrated Display, Display (HID) system and device for remotely viewing a video signal, wherein the device is worn on a cameraman's headhead. The device has a housing containing a headhead-mounted, mounted, high resolution CRT to produce a visible image from an incoming video signal generated by an input video source such as a STEADICAM video tap camera. Through a network of mirrors and a double convex lens, the visible image is converted into a virtual image, which image is presented to a sighting eye of the cameraman. An occlusion device, also attached to the HID system, partially blocks off the view out of a non-sighting eye such that the perceived images from both eyes combine in the cerebral cortex of the cameraman's brain into one coherent image without problems of binocular rivalry. In an alternate embodiment, an RF receiver is incorporated into the HID system for receiving an RF video signal broadcast into the airwaves from the input video source, thus eliminating the need for a direct connection to the input video source. Patent Number 5188093 Issue Date 1993-02-23 Assignee Name CITATION MEDICAL CORPORATION State / Country CA Classification 128/6 Title Portable arthroscope with periscope optics Abstract A hand-held portable arthroscope has a camera assembly and a disposable scope assembly rotatably attached to the distal end of the camera assembly. A probe which includes a fiber optic image guide and a plurality of optical illuminating fibers is rotatably mounted, mounted on the scope assembly, and is insertable into a body for imaging the internal structure of the body. The illuminating fibers extend through the scope assembly and are connected in light communication with a quartz halogen lamp for illuminating the internal body structure being imaged. To gather light from the illuminated internal structure of a body into which the probe has been inserted, a GRIN rod is attached to the distal end of the image guide. The image guide is bent near its distal end to offset the axis of the GRIN rod from the axis of the camera assembly, to enhance the field of view of the arthroscope when the scope assembly, which supports the image guide with GRIN rod, is rotated. Focussing optics are mounted, mounted in the camera assembly in light communication with the image guide. These focussing optics are axially movable within the camera assembly for focussing the image from the image guide. Light which passes through the focussing optics enters a camera headhead which is also mounted, mounted in the camera assembly. The camera headhead is in turn electrically connected to a video display, display device for producing an image of the internal structure of the body. Patent Number 5184231 Issue Date 1993-02-02 Assignee Name GEC-MARCONI LIMITED State / Country GBX Classification 359/13 2/6.2 2/6.5 359/815 Title Helmet, Helmet systems Abstract A helmet, helmet system comprising a helmet, helmet (11), a vizor (13) pivotally mounted, mounted on the helmet, helmet, and mounted, mounted on the vizor (13), an electro-optical system, e.g. a night vision goggle, including an eyepiece (33) positioned between a transparent part (19) of the vizor and the user's eye so as to provide the user with a view of a scene forward of the user through the eyepiece, the eyepiece also serving as a combiner to provide the user with a virtual image of a display, display produced by the electro-optical system superimposed on his view of the forward scene through the eyepiece. Patent Number 5164848 Issue Date 1992-11-17 Assignee Name GEC-MARCONI LIMITED State / Country GBX Classification 359/13 359/14 359/24 359/34 359/630 Title Helmet, Helmet mounted, mounted display, display Abstract A holographic objective system (3) produces an intermediate real image (4) of information displayed on an electrically addressable spatial light modulator or SLM (1), the real image (4) being collimated by a powered holographic reflector (5) constructed as part of the visor of a helmet, helmet worn by the viewer (9). The SLM (1) is illuminated by laser light from a remote laser (8) via a single optical fibre (6) and beam splitter (2). A diffuser (7) is provided either between the laser and the beam splitter or in the plane of the intermediate image (4). The objective system (3) may alternatively include, or consist entirely of, conventional optical elements. Patent Number 5162828 Issue Date 1992-11-10 Assignee Name ~Individually Owned Patent State / Country OH Status CC Classification 353/122 351/158 359/618 Title Display, Display system for a headhead mounted, mounted viewing transparency Abstract A display, display system for conventional eyewear having a transparency that defines a field of view and a frame for supporting the transparency on a user's headhead is shown. The display, display system includes a light transmissive display, display mounted, mounted on the frame of the eyewear and optics for collimating light to project an image of the displayed information at a distance from the user in the periphery of the field of view defined by the transparency. The optics may include a single mirror that receives the information directly from the display, display wherein the mirror is toroidal or the like so as to project an enlarged image at an apparent optical distance from the user that is greater than the actual optical path. Alternatively, a planar mirror may be employed with a collimating lens to project the image at a desired distance from the user. The mirror may be fully reflective or partially reflective so as to superimpose the image of the displayed information on the scene viewed by the user through the transparency of the eyewear. Further, means are provided for automatically adjusting the optical path defined by the relative position of the mirror, the display, display and the user's eye to accommodate heads of various sizes. Patent Number 5151722 Issue Date 1992-09-29 Assignee Name JOHNS HOPKINS UNIVERSITY State / Country MD Classification 351/158 351/41 Title Video display, display on spectacle-like frame Abstract A headhead mounted, mounted display, display is disclosed for providing a monocular or binocular wide field of view. The headhead mounted, mounted display, display contains a unique configuration and unique folding optics so that it can be worn like a pair of spectacles or goggles. The optics and frame of the goggles are uniquely designed to accommodate different headhead dimensions. Patent Number 5148146 Issue Date 1992-09-15 Assignee Name DELCO ELECTRONICS CORPORATION State / Country IN Classification 340/461 340/980 345/7 Title High brightness telltale for a headhead-up display, display Abstract A telltale is sufficiently small and sufficiently bright for use in a headhead-up display, display such that the image of the telltale is projected of the combiner, e.g., the vehicle front windshield, and is clearly visible to the vehicle operator, even on bright sunny days. The apparatus includes a housing and a light source. The housing has an inner reflective surface with a focal point outside the housing and an aperture located between the reflective surface and the focal point. A graphics plate is mounted, mounted in the aperture. The telltale is highly emissive when light from the light source reflects off of the inner surface and through the aperture. Patent Number 5145271 Issue Date 1992-09-08 Assignee Name SEIKOSHA CO., LTD. State / Country JPX Classification 400/711 400/61 400/320 400/356 400/703 Title Serial printer Abstract A serial printer includes: a carrier mounted, mounted with a printing headhead; a display, display means movable with the carrier; a stationary panel having indicating windows arranged so that the display, display means is recognizable through the specific indicating window when the carrier comes to a predetermined position; a carrying means for carrying the carrier; a printing mode storage means for storing printing modes; an operating switch for selecting the printing modes; and a printing mode setting means for permitting the carrying means to move the carrier and changing the printing mode of the printing mode storage means according to the position of the carrier. Patent Number 5142274 Issue Date 1992-08-25 Assignee Name DELCO ELECTRONICS CORPORATION State / Country IN Classification 345/7 116/47 116/48 116/286 362/23 362/27 362/30 Title Silhouette illuminated vehicle headhead-up display, display apparatus Abstract An improved vehicle headhead-up display, display apparatus in which both the display, display and pointer of the image source are illuminated for low ambient driver viewing by a back lighting means mounted, mounted on the rear face of the display, display. A generally opaque applique includes a translucent region in registry with the backlit area, and bright opaque graphic symbols painted or deposited onto a surface of the applique wihin the translucent region. A pointer disposed in proximity to the front surface of the applique is provided with juxtaposed bright opaque and transparent regions. In high ambient lighting conditions when the back lighting means is not lit, a front lighting means illuminates the bright opaque graphic symbols and pointer stripes so that a viewer of the projected display, display perceives an image of the bright opaque graphic symbols and pointer stripes. In low ambient lighting conditions when the back lighting means is lit, the viewer perceives a projection of the opaque graphic symbols and pointer stripes in silhouette against the relatively bright translucent regions of the applique and pointer, respectively. Patent Number 5138555 Issue Date 1992-08-11 Assignee Name ~Individually Owned Patent State / Country OH Status CC Classification 364/424.06 340/980 345/8 Title Helmet, Helmet mounted, mounted display, display adaptive predictive tracking Abstract A system for predicting headhead movements by an aircrew member, such as a pilot flying a tactical aircraft, from input data which includes an ongoing record of headhead positions. The input is without headhead acceleration or velocity input data and is applied to a Least Mean Square prediction algorithm. The disclosure also includes an improved data dependent convergence algorithm for the prediction system, an algorithm shown to provide rapid convergence to the final prediction output. Use of the prediction system to make the delay between actually viewed and HMD presented images and other flight video images acceptable from a human engineering and disoriented pilot avoidance viewpoint is also disclosed. A computer program embodiment of the system using headhead movement data is included. Patent Number 5137450 Issue Date 1992-08-11 Assignee Name UNITED STATES OF AMERICA, AIR FORCE State / Country AZ Classification 434/44 273/434 348/123 434/38 Title Display, Display for advanced research and training (DART) for use in a flight simulator and the like Abstract A wrap-around display, display system for presenting out-the-window visual imagery in a flight simulator is disclosed. Eight identically pentagon-shaped translucent rear-projection screens are joined together at their edges to form a partial dodecahedron. Each video projector is mounted, mounted outside the partial dodecahedron to direct, through a mounted, mounted mirror-folded beam path, an appropriate simulator image to the rear of a pentagon screen. A simulator pilot views the simulated image from inside the partial dodecahedron. Also disclosed is an apparatus for switching eight video signals among six video channels by monitoring simulator headhead movement to switch video signals to the screen, or window, then being viewed. Further disclosed is an apparatus for providing geometrically correct separate images to two simulator crewmembers. Each field of an interlaced raster display, display is a display, display for a separate crewmember design eye-point. Two liquid crystal controlled glasses are worn one each by each crewmember. The glasses lens are separately switched on and off in synchronization with the two video fields so that each crewmember sees the geometrically correct view for his or her design eye-point. Patent Number 5130794 Issue Date 1992-07-14 Assignee Name ~Individually Owned Patent State / Country KS Status CC Classification 348/39 348/383 Title Panoramic display, display system Abstract A panoramic image based virtual reality display, display system includes a panoramic optical assembly, preferably of substantially spherical coverage, feeding composite optical images to a light sensitive surface of a video camera for storage or further processing in image processing circuitry. Such image processing circuitry includes a special effects generator and image segment circuitry to divide a composite image into a plurality of image segments or sub-segments for display, display on individual displays of multiple video display, display assemblies. Such a multiple video display, display assembly preferably includes a closed structure having individual display, display units mounted, mounted in all viewable directions therein, with segments of the composite image displayed on respective display, display units to recreate the panoramic view gathered by the panoramic optical assembly. The image processing circuitry may also select a portion or portions of the composite image for display, display on one or two displays of a headhead mounted, mounted display, display unit. Patent Number 5035474 Issue Date 1991-07-30 Assignee Name HUGHES AIRCRAFT COMPANY State / Country CA Classification 359/13 359/19 359/630 Title BIOCULAR HOLOGRAPHIC HELMET, HELMET MOUNTED, MOUNTED DISPLAY, DISPLAY Patent Number 5005213 Issue Date 1991-04-02 Assignee Name VARO INC. State / Country TX Classification 359/146 89/41.05 224/181 348/115 348/148 348/164 359/144 Title HEADHEAD MOUNTED, MOUNTED VIDEO DISPLAY, DISPLAY AND REMOTE CAMERA SYSTEM Patent Number 5003300 Issue Date 1991-03-26 Assignee Name REFLECTION TECHNOLOGY, INC. State / Country MA Classification 345/8 340/980 348/115 348/838 359/213 Title HEADHEAD MOUNTED, MOUNTED DISPLAY, DISPLAY FOR MINIATURE VIDEO DISPLAY, DISPLAY SYSTEM Patent Number 4970589 Issue Date 1990-11-13 Assignee Name VARO INC. State / Country TX Status CC Classification 348/158 89/41.05 224/181 348/164 348/373 359/146 359/159 Title HEADHEAD MOUNTED, MOUNTED VIDEO DISPLAY, DISPLAY AND REMOTE CAMERA SYSTEM Patent Number 4969714 Issue Date 1990-11-13 Assignee Name UNITED TECHNOLOGIES CORPORATION State / Country CT Classification 359/630 345/8 345/9 Title HELMET, HELMET MOUNTED, MOUNTED DISPLAY, DISPLAY HAVING DUAL INTERCHANGEABLE OPTICAL EYEPIECES Patent Number 4968123 Issue Date 1990-11-06 Assignee Name UNITED TECHNOLOGIES CORPORATION State / Country CT Status CC Classification 359/630 359/480 Title HELMET, HELMET MOUNTED, MOUNTED DISPLAY, DISPLAY CONFIGURED FOR SIMULATOR USE Patent Number 4961626 Issue Date 1990-10-09 Assignee Name UNITED TECHNOLOGIES CORPORATION State / Country CT Status CC Classification 359/630 345/8 345/9 359/407 Title DIRECT INCORPORATION OF NIGHT VISION IN A HELMET, HELMET MOUNTED, MOUNTED DISPLAY, DISPLAY Patent Number 4884137 Issue Date 1989-11-28 Assignee Name VARO INC. State / Country TX Classification 348/158 89/41.05 224/181 348/164 359/144 359/159 Title HEADHEAD MOUNTED, MOUNTED VIDEO DISPLAY, DISPLAY AND REMOTE CAMERA SYSTEM Patent Number 4859030 Issue Date 1989-08-22 Assignee Name HONEYWELL INC. State / Country MN Classification 359/631 359/632 359/633 Title HELMET, HELMET MOUNTED, MOUNTED DISPLAY, DISPLAY WITH IMPROVED BRIGHTNESS Patent Number 4796987 Issue Date 1989-01-10 Assignee Name ~Individually Owned Patent State / Country CA Classification 351/158 351/43 Title Digital display, display for headhead mounted, mounted protection Patent Number 4786966 Issue Date 1988-11-22 Assignee Name VARO INC. State / Country TX Classification 348/158 224/181 348/164 359/142 359/159 Title HeadHead mounted, mounted video display, display and remote camera system Patent Number 4761056 Issue Date 1988-08-02 Assignee Name KAISER AEROSPACE & ELECTRONICS CORP. State / Country CA Classification 359/631 348/115 359/365 359/839 359/858 359/861 Title Compact helmet, helmet mounted, mounted display, display Patent Number 4757714 Issue Date 1988-07-19 Assignee Name INSIGHT, INC. State / Country WA Status CC Classification 73/597 324/160 Title Speed sensor and headhead-mounted, mounted data display, display Patent Number 4743200 Issue Date 1988-05-10 Assignee Name CAE ELECTRONICS, LTD. State / Country CAX Classification 434/43 345/8 434/44 Title FIBER OPTIC COUPLED HELMET, HELMET MOUNTED, MOUNTED DISPLAY, DISPLAY SYSTEM Patent Number 4695129 Issue Date 1987-09-22 Assignee Name U.S. PHILIPS CORPORATION State / Country NLX Classification 385/119 345/8 348/42 348/53 348/359 353/7 385/116 385/147 Title VIEWER HAVING HEADHEAD MOUNTED, MOUNTED DISPLAY, DISPLAY UNIT FOR CINERAMA PICTURES Patent Number 4439157 Issue Date 1984-03-27 Assignee Name UNITED STATES OF AMERICA, NAVY State / Country FL Status E Classification 434/40 359/218 359/618 434/44 Title HELMET, HELMET MOUNTED, MOUNTED DISPLAY, DISPLAY PROJECTOR Patent Number 4437113 Issue Date 1984-03-13 Assignee Name UNITED STATES OF AMERICA, AIR FORCE State / Country AZ Status E Classification 348/115 Title ANTI-FLUTTER APPARATUS FOR HEADHEAD MOUNTED, MOUNTED VISUAL DISPLAY, DISPLAY Patent Number 4364636 Issue Date 1982-12-21 Assignee Name ELLIOTT BROTHERS LIMITED State / Country GBX Classification 359/632 2/6.2 2/6.5 359/481 359/641 Title HELMET, HELMET MOUNTED, MOUNTED SIGHT WITH FIXED DISPLAY, DISPLAY AND PIVOTAL ARM Patent Number 4348186 Issue Date 1982-09-07 Assignee Name UNITED STATES OF AMERICA, NAVY State / Country FL Classification 434/44 Title PILOT HELMET, HELMET MOUNTED, MOUNTED CIG DISPLAY, DISPLAY WITH EYE COUPLED AREA OF INTEREST Patent Number 4303868 Issue Date 1981-12-01 Assignee Name UNITED STATES OF AMERICA, NAVY State / Country FL Classification 315/364 348/61 Title SAWTOOTH WAVEFORM GENERATING CIRCUIT FOR UTILIZATION IN A HELMET, HELMET MOUNTED, MOUNTED DISPLAY, DISPLAY Patent Number 4269476 Issue Date 1981-05-26 Assignee Name THOMSON-CSF State / Country FRX Classification 345/8 2/422 Title HELMET, HELMET-MOUNTED, MOUNTED DISPLAY, DISPLAY SYSTEM Patent Number 3608935 Issue Date 1971-09-28 Assignee Name HUGHES AIRCRAFT COMPANY State / Country CA Classification 403/322 345/8 403/321 403/325 403/327 Title HELMET, HELMET MOUNTED, MOUNTED DISPLAY, DISPLAY UNIT WITH FASTENER DEVICE