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Class 348/744 - Projection device


Subclass of Class 348 - Television
Definition: Subject matter including a viewing surface (e.g., screen
No. of patents: 520
Last issue date: 05/29/2012


                    13  
NumberTitleIssue Date
5315395Projector with separable projection unit and display body
A projection-type display device comprises: a display body including an upper cabinet having a screen at a front portion thereof and a lower cabinet having a pair of side frames for supporting the upper cabinet; a projector unit including projectors and m...
05/24/1994
5303294Video theater system and copy preventive method
A video theater system includes a video cassette recording at least a component video signal to which a copy preventive scheme has been applied; a video cassette recorder for reproducing the video cassette; a tuner and an antenna for receiving a signal tr...
04/12/1994
5287173System and method for adjusting white balance of projector type color display device
A system for adjusting the white balance of a projector type color display device is shown. The color display device includes three single color cathode ray tubes from which single color beams are projected onto a screen to form a colored image on the scr...
02/15/1994
5281985Video viewing system for a vehicle
A video viewing system for a vehicle including a vehicle having a battery which, through an inverter, powers a video and audio generating source. The source transmits video signals to a projector which is also powered by the vehicle battery. The projector...
01/25/1994
5264941Large screen display apparatus utilizing a transparent plate to display an image over an entire surface of a diffusing surface
A large-size screen display apparatus, having a plurality of projection display devices arrayed in a matrix arrangement to form one large screen, is for displaying characters and the like. A screen of each projection display device consists of a transpare...
11/23/1993
5258828Color CRT drive apparatus having automatic white balance adjusting circuit and CRT display
A picture tube drive apparatus for driving a color picture tube. The picture tube drive apparatus comprises a video output circuit which receives video signals, amplifies them and outputs the amplified video signals, a picture tube drive circuit which rec...
11/02/1993
5258830Automatic video convergence system
An automatic convergence system for correcting misregistration of component color images in a projection video display unit. The system comprises control circuitry for generating target characters onto a projection surface, and a locator assembly for aimi...
11/02/1993
5257017Electronic billboard
An electronic billboard sign is provided in which electro-micro circuitry programming is utilized to display advertising information onto a large front billboard screen by a large moveable lens....
10/26/1993
5255100Data formatter with orthogonal input/output and spatial reordering
A method and structure for reformatting digitized standard video data for input into a binary spatial light modulator. The data enters circuitry that separates all of the equally weighted binary data into line segments, which are then stored. The data is ...
10/19/1993
5249005Projection image system and assembling system therefor
A projection image unit comprises a screen, a box-like casing arranged behind a back surface of the screen having an opening face directed to the back surface and a projector disposed in the casing so as to project an image on the screen. The casing has o...
09/28/1993
5242306Video graphic system and process for wide field color display
A graphics system provides color image displays including a low resolution, wide field background and a contained high resolution area of interest, by projecting three component color images at wide angle, one of which (green) is blanked at the area of in...
09/07/1993
5223869Projector
A projector suitable for a rear projection type receiver is disclosed. The projector has a device for generating an image and an image projecting device for projecting the image to a screen. The image projecting device includes a projection lens system an...
06/29/1993
5194884Image projection system employing a cold cathode field-emission image source
An image projection system utilizing a cold cathode field emission device to provide the image source is provided. By using a cold cathode field emission device as an image source, an improved image may be achieved as compared to that of a conventional el...
03/16/1993
5184224Television projection screen having anti-static elements
A transmission-type video projection television system employs a transmission-type screen for displaying an image projected from a rear projector for visual observation by an observer in front of the screen. The transmission-type screen has Fresnel and le...
02/02/1993
5170258Projection television system employing optics through which transmitted infrared television signals are received
A projection television system includes a projection unit having an optical element through which infrared television signals are received. The received signals are processed to provide a television image display which is projected for viewing. Received t...
12/08/1992
5161013Data projection system with compensation for nonplanar screen
A data projection system in which a data projector having a data display memory associated therewith projects images to a viewing screen. The system includes a curved or nonplanar viewing screen and computer software effective to provide viewing fidelity ...
11/03/1992
5142366Video-sync locked horizontal size regulation in projection light valve system
The horizontal size of the raster in a light valve projection system is determined by the ratio by which a RF carrier is divided, wherein the frequency of the RF carrier is locked to a synchronization signal derived from the horizontal synchronization pul...
08/25/1992
5142373Rear projection television set having improved contrast
A rear projection television set is of the construction in which an image light projected from a projection cathode ray tube is reflected by a mirror onto the rear surface of a screen comprising a Fresnel lens and the light passes through the front surfac...
08/25/1992
5138309Electronic switch matrix for a video display system
An electronic switch matrix for a video projection system has a plurality of switch elements, each of which is associated with a respective one of the display pixels in a MxN array. A first counter, in response to a pixel clock and the horizontal sync sig...
08/11/1992
5134491Projection type image display apparatus
A projection type image display apparatus uses an optical modulation image display device as a light valve. Notwithstanding the use of a metal vapor discharge lamp which has a long re-starting period of time as a light source, the apparatus can display im...
07/28/1992
5089883Color television projection device with cathodoluminescent light sources
The invention relates to a color television projection device having three planar monochromatic light sources for the background illumination of a viewing screen, in which a matrix-shaped electro-optical light valve is associated with each light source ch...
02/18/1992
5079627Videophone
The present invention, the Videophone, is a compact audio/video device that is capable of both sending and receiving audio and visual signals, and is designed to be compatible with standard telephone equipment. The Videophone includes a modified speakerph...
01/07/1992
5023725Method and apparatus for dodecahedral imaging system
A dodecahedral environmental photography and projection system based on a pentagonal format is disclosed, designed for a modular compound camera and projector system aligned according to the dodecahedron, for the photography and projection of apparently c...
06/11/1991
5005950Giant liquid crystal display means
Giant liquid crystal display means. The means comprises projection modules (MP) associated with mirrors (M1, M2) and a large screen (E). The screen carries colored filters (R, G, B) and the liquid crystal displays are monochromatic. Application to the pro...
04/09/1991
4973884Substitute lamp module for projectors
A low light level lamp module for slide projectors is provided as a substitute for the normal lamp module using high-wattage, high-brightness lamps to permit using the projector with a conversion kit which allows the slides to be viewed on a video receive...
11/27/1990
4974073Seamless video display
A seamless video display is generated from multiple discrete video images by overlapping the images and ramping the image brightness in the overlaps. The resulting composite image is of uniform brightness and has no seams between the images of which it is...
11/27/1990
4963984Optical projection camera alignment system and method
An optical projection camera alignment system and method particularly adapted for a solid state image sensor array type cameras such that a high intensity light source is directed onto the image sensor array to effectively project the image of the image s...
10/16/1990
4962420Entertainment video information system having a multiplane screen
A video information system includes a screen (1) having at least two cells (2-5, 14-16) rotatable in at least one direction and forming a three-dimensional multi-plane screen system changeable in space. Information from at least one projector is fed to tw...
10/09/1990
4951151Image display system and method
Computer operated projectors are positioned to project onto an uneven surface or relief map prepared to reflect a remote surface. If the remote surface is geographical, the surface is at a scale in which the horizontal scale is substantially larger than t...
08/21/1990
4831449Television apparatus incorporating receiver and video tape recorder in a common cabinet
In a television apparatus having a television receiver, a video tape recorder for recording and reproducing video and audio information included in a received television signal and being susceptible to distortion of the recorded video information when sub...
05/16/1989
4656521Digital distortion-correcting circuit for projection a flat image on a curved screen from a digital data source for a simulator projected-image visual system
A simulator projected-image system includes a distortion-correcting circuit to modify flat-image data that is stored sequentially in a Random Access Memory by connecting a source of random address to obtain selected video data from the memory in a predete...
04/07/1987
4633294Method for reducing the scan line visibility for projection television by using a different interpolation and vertical displacement for each color signal
A method for reducing the scanning line visiblity in the display of a color projection television receiver in which the rasters of scanning lines for the separate color signals are deconverged by vertically shifting the scanning line raster of each color ...
12/30/1986
4573081Frequency selective video signal compression
A projection-type television system includes apparatus for providing frequency selective compression of video signals. Low frequency video signal components representative of white image information above a threshold level are subjected to relatively grea...
02/25/1986
4524385Predetection processing of optical information
An optical processing system for processing infrared information prior to detection. In one embodiment, optical information from an infrared scene is focused by optics (10) onto a thermoptic modulator (12) which contains an optical structure (16) disposed...
06/18/1985
4468694Apparatus and method for remote displaying and sensing of information using shadow parallax
A scanning beam display system is used as a projection display and as a reflective flying-spot scanner using a plurality of photoreceptors to sense depth. Used as a display, the projection of a document-size image from overhead onto a work surface such as...
08/28/1984
4355328360 Degree closed circuit television system
A 360 degree closed circuit television system is disclosed which includes x background scene cameras, each camera of which scans a sixty degree segment of a background scene appearing on a 360 degree reflective display screen, and each camera of which pro...
10/19/1982
4352124Aircraft passenger entertainment system
An aircraft passenger entertainment system projects three complementary color component images, preferably from a passenger cabin ceiling, onto a flat screen with the aid of three imaging devices, each of which presents a different color component image i...
09/28/1982
4213153Process for the optical display of information using lasers
A display process for the optical presentation of information which process omprises impinging laser beams modulated as to their direction, intensity and/or frequency, upon a transparent target containing a fluorescent substance which is excited by said la...
07/15/1980
4186394Automatic display system and process
An image display system and process are disclosed. The image display system comprises a generally flat display screen which is subdivided into a plurality of display mode modules, each display module being composed of a plurality of display elements. Each...
01/29/1980
4040047Erasable thermo-optic storage display of a transmitted image
The invention provides an optical display device, utilizing a thermo-optical effect to inscribe a transmitted image in a film of a material exhibiting a smectic state. The crystal liquid layer is inserted between transparent electrodes and heated to be in...
08/02/1977
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