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| Number | Title | Issue Date |
| 7227596 | Colour defects in a display panel due to different time response of phosphors The luminous elements of the three colours red, green and blue of a plasma video display have different time responses. Therefore, a coloured trail/edge appears behind and in front of the edges of a moving object. In order to reduce the disturbing character of such ... | 06/05/2007 |
| 7084931 | Projection video device A projection-type imaging device 1000 includes: a light source optical system 121 for emitting source light 122; image display elements 7a–7c each having a display surface 127 on which a plurality of micromir... | 08/01/2006 |
| 6971750 | Projection display apparatus A projection display apparatus includes a display panel provided with first electrodes, a circuit board provided with a drive circuit including second electrodes for driving the display panel, a projection lens support provided with a projection lens for projecting ... | 12/06/2005 |
| 6972805 | Display of a video signal by means of a line scan An apparatus displays a video signal (VID) by means of a scan (SCAN). The apparatus may be, for example, a television set. The apparatus comprises a device (SCAVEM) for modulating the scanning rate (Vscan) as a function of the derivative (DLUM) of a luminance signal... | 12/06/2005 |
| 6972808 | CRT assembly of projection television A cathode-ray tube (CRT) assembly of a projection television includes a CRT for creating an image, a lens for magnifying the image created in the CRT and projecting the image onto a screen, and a coupler disposed between the CRT and the lens. A cooling liquid recept... | 12/06/2005 |
| 6897900 | Display apparatus comprising a cathode ray tube (CRT) A display apparatus, for instance a television receiver, comprises a cathode ray tube, a first circuit for providing a high voltage to the cathode and a second circuit receiving a gross signal and providing on at least an output at least a luminance signal controlli... | 05/24/2005 |
| 6873374 | Shielding apparatus of projection television A shielding apparatus of projection television is disclosed. A metal shield casing made of metal plate members shields an optical block and a circuit block. Metal plate printed board holding sections are connected to the metal shield casing detachably at predetermin... | 03/29/2005 |
| 6822699 | Cathode ray tube and method of displaying picture A main picture is displayed in monochrome in a main picture display area by emission of a first phosphor layer formed of a white emission phosphor. A second phosphor layer formed of a phosphor different from the first phosphor layer is provided in a region different... | 11/23/2004 |
| 6775633 | Calibration techniques for imaging devices The invention is directed to various calibration techniques for calibrating an imagining device such as a display device, a printer, or a scanner. The techniques may involve characterizing the imaging device with a device model such that an average error between exp... | 08/10/2004 |
| 6736517 | Dual mode laser projection system for electronic and film images A dual mode laser projection system having a film mode and an electronic mode that can be used to project an image onto a screen. In the film mode an image is projected by illuminating film with lasers, and in the electronic mode an image is created by modulation of... | 05/18/2004 |
| 6633140 | Display apparatus with a combined structure of electron gun and video unit A display apparatus using clamps for coupling an electron gun unit with a video unit is provided. The display apparatus may be constructed using a panel on which a picture is displayed, a funnel fastened to the panel, an electron gun inserted into a neck ... | 10/14/2003 |
| 6549246 | Method for driving projection cathode ray tube In a projection CRT, an image of high brightness is displayed on a screen as an electron beam emitted from an electron gun is scanned according to an image driving signal. The image is magnified and projected through a lens unit. Here, voltage of a direct... | 04/15/2003 |
| 6506317 | Cooling medium for optical equipment and cooling device using the same A cooling medium and a cooling device for optical equipment using the same, which cooling medium has a refractive index in a specific range, hardly causes the problem to dissolve or swell plastic lens and other component parts, and is flame retardant. The... | 01/14/2003 |
| 6501517 | Optical system in projection television receiver An optical system in a projection television receiver includes: a screen for simultaneously displaying R (Red), G (Green) and B (Blue) images thereon; and a light source part comprising R, G and B cathode ray tubes. The R and B cathode ray tubes project t... | 12/31/2002 |
| 6493040 | Scan velocity modulation circuit with multi-mode operation A video display deflection circuit includes a source of a video signal for displaying picture information contained in the video signal in a screen of a cathode ray tube. The video signal provides selectively on-screen-display information and non-on-scree... | 12/10/2002 |
| 6456341 | CRT assembly of projection TV system A CRT assembly of a projection TV system includes a CRT for forming an image, a projection lens for magnifying and projecting the image formed by the CRT, a coupler installed between the CRT and the projection lens, a coolant receiving portion formed at t... | 09/24/2002 |
| 6384874 | Display apparatus The present invention provides a display apparatus for discharging and removing needless cooling liquid consistently when the display apparatus for cooling a cathode ray tube with cooling liquid is fabricated and relates to a display apparatus for cooling... | 05/07/2002 |
| 5909258 | Cathode ray tube display and television set having the same In a CRT display and a television set having the same, horizontal/vertical synchronizing signals are separated from a video synchronizing signal in a synchronizing separation circuit, and position information S of a vertical frame is generated on the basi... | 06/01/1999 |
| 5847778 | Video display device In a projection type video display device comprising a light writing type spacial light modulator, disturbances brought about by a resetting pulse and appearing in a projected picture as a black belt or beat are prevented. This is accomplished by causing ... | 12/08/1998 |
| 5812215 | Projector display unit In a projecting unit of a projector, a projecting tube is sealingly attached to a projecting tube frame by means of a packing member, a projecting lens is sealingly attached to a projecting lens frame by means of a packing member, and an image on the proj... | 09/22/1998 |
| 5805211 | Electrostatic probe device for signal detection of cathode ray tube displays An electrostatic probe device detects signals displayed on a cathode ray tube in a non-invasive manner. Specifically, the probe device includes a probe that is spaced from a fluorescent screen of a cathode ray tube by a dielectric material and a detection... | 09/08/1998 |
| 5793448 | Cathode ray tube packages A cathode ray tube package includes a cathode ray tube assembly and a housing assembly including a deflection coil and/or at least one focus coil. The cathode ray tube assembly includes a collar (31) aligned with the electron beam, being arranged to mate ... | 08/11/1998 |
| 5786903 | Multi-power control system for scanners The present invention discloses a multi-power control system for scanners. The method of the present invention has a mode of warm up time, which is controlled by a software that is embeded in a computer. Users can choose a mode of warm up time to control ... | 07/28/1998 |
| 5592238 | Field-sequential projection display A single-tube type projection display with high light efficiency includes phosphors of three primary colors formed on upper, middle and lower portions of a faceplate of a CRT. Images of three colors are projected on the phosphor layers, and a color pictur... | 01/07/1997 |
| 5566370 | Simulation display system A compact display system simulates a panoramic view to an observer located at a central viewing station. A toric mirror, comprising a compressed portion of a sphere, has a concave reflective surface disposed in surrounding relation to the given viewing st... | 10/15/1996 |
| 5523789 | High definition television monitor for displaying video images reproduced from normal standard video signals A high definition television monitor which raises the level of a convergence voltage by a predetermined voltage in one of two consecutive horizontal periods in which the same video signal is produced, writes the same video image twice on the same line dur... | 06/04/1996 |
| 5506629 | Projecting-type display apparatus Projecting-type display apparatus, wherein an image forming means frame is supported in such a manner as to be rotatable within a first plane perpendicular to an optical axis of a projection lens, and within a second plane including the optical axis and p... | 04/09/1996 |
| 5420648 | 2-CRT type projection apparatus including a red/green CRT and a blue/green CRT with different green phosphors A 2-CRT type projection apparatus having a green and blue two-color cathode ray tube and a green and red two-color cathode ray tube and producing a projected picture of high resolution and brightness. The green phosphor of one of the two-color cathode ray... | 05/30/1995 |
| 5381252 | Opposed scanning electron beams light source for projection LCD A projection liquid crystal display (LCD) system includes a liquid crystal display panel including a first plurality of horizontally aligned transparent conductive scanning electrodes and a second plurality of vertically aligned transparent conductive sig... | 01/10/1995 |
| 5381189 | Projector in a projection television A liquid cooling type projector is provided with greater flexibility to meet different screen sizes of a projection television and, thus, contributes to the reduction of production cost. The projector has a cylindrical frame containing a projection lens u... | 01/10/1995 |
| 5337092 | Image display apparatus The television apparatus of the present invention is a apparatus which displays an image corresponding to a television signal, where an image signal is received and, by use of the received image signal, a first image signal and a second image signal are g... | 08/09/1994 |
| 5303054 | Line electron beam light source for projection LCD system A projection liquid crystal display (LCD) system includes an LCD panel including a first plurality of horizontally aligned transparent conductive scanning electrodes and a second plurality of vertically aligned transparent conductive signal electrodes dis... | 04/12/1994 |
| 5258828 | Color 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 |
| 5162897 | Projection type stereoscopic image display system A projection-type stereoscopic image display system is disclosed in which a left-eye projection light ray and a right-eye projection light ray are projected from behind a transparent screen thereby to display a stereoscopic image.... | 11/10/1992 |
| 5121233 | Multi-color display A display having as a light source thereof an electron tube. The electron tube has disposed in an evacuated envelope thereof a plurality of cathode means, each one thereof adapted to emit electrons in response to a control signal. A plurality of sets of a... | 06/09/1992 |
| 5115306 | Projection CRT with a green emitting terbium activated lanthanum oxychloride phosphor exhibiting nearly constant light-output of elevated temperatures A projection cathode-ray tube for a projection video apparatus, comprising a green-emitting screen including a terbium-activated lanthanum oxychloride phosphor. The disclosed phosphor exhibits a luminance maximum at a minimum beam size, a property advanta... | 05/19/1992 |
| 5107173 | Projection cathode ray tube A high-quality projection cathode ray tube is for projecting the image displayed on a fluorescent surface, as an enlarged image on a screen in front of the fluorescent surface through a projection lens projection lens disposed at a given distance ahead. O... | 04/21/1992 |
| 5079623 | Signal clamp for a dual function input terminal of a "one-chip" television signal processing IC A so-called "one-chip" television IC includes a dual purpose input terminal for receiving a control signal representing an image property, such as a contrast, and also a signal having an amplitude within a predetermined range for enabling a test mode of o... | 01/07/1992 |
| 5031033 | Projection television apparatus In a projection television apparatus, a color selecting device is located on an optical light path passing through a cathode ray tube and a series of projection lenses disposed in front of the cathode ray tube. This color selecting device has a high refle... | 07/09/1991 |
| 4982289 | Liquid cooled cathode ray tube apparatus for video projection system In a video projector for projecting video images on phosphor screens of cathode ray tubes to a screen, a refrigerant mixture of ethylene glycol, diethylene glycol and glycerine is filled in watertight spaces enclosed by the cathode ray tubes, radiators an... | 01/01/1991 |
