Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7349032 | Circuit to resize and enlarge an image signal and resizing and enlargement method for an image signal The invention provides an image processing circuit having a capability of performing a reduction (resizing) process and an enlargement process on horizontal-scanning-line data inputted in synchronization with an input horizontal synchronization signal, and subsequen... | 03/25/2008 |
| 6906470 | Method and system for controlling electron beams from field emission cathodes Apparatus and method are provided for using a multi-element field emission cathode in a color cathode ray tube. The field emission cathode may have from four to ten field emission arrays linearly arranged. The arrays are preferably formed from carbon-based material.... | 06/14/2005 |
| 6903519 | Multi-element field emission cathode Apparatus and method are provided for using a multi-element field emission cathode in a color cathode ray tube. The field emission cathode may have from four to ten field emission arrays linearly arranged. The arrays are preferably formed from carbon-based material.... | 06/07/2005 |
| 6310434 | Picture display device having an improved bandwidth A picture display device having a cathode which includes two electric current conductors between which a video signal is applied, for applying a video signal to the cathode to modulate an electron beam emitted from the cathode. To increase the feasible mo... | 10/30/2001 |
| 6175392 | Method and apparatus for improving the color convergence of projection-based displays System and method for improving color convergence in projection display systems employs one or more mirror units disposed for reflecting light from the projection lens to a display screen, each mirror unit including one or more reflective layers adjustabl... | 01/16/2001 |
| 6057883 | Circuit for controlling the picture tube in a television receiver A circuit for controlling the picture tube in a television receiver. In order to generate a high peak white on the screen of the picture tube, it is desirable to drive the output amplifiers at full output. Because of tolerances, for example in the cutoff ... | 05/02/2000 |
| 5793166 | Image display device comprising a cathode ray tube An image display device (1) which includes a cathode ray tube is provided with a cathode system (2) for the emission of a plurality of electron beams (3) whereby a phosphor screen (4) is scanned in order to display an image. The electron beams are modulat... | 08/11/1998 |
| 5777698 | Apparatus for reducing moire interference in color cathode ray tubes An apparatus for reducing Moire interference in a color cathode ray tube produced due to inconsistent spacing of scanning lines with respect to the dot pitches of a shadow mask during the display of video signals. The apparatus includes a sync signal divi... | 07/07/1998 |
| 5712538 | CRT display device comprising a filter in the cathode modulator A phosphor screen in a display device is scanned by separate electron beams in order to generate images of different frequency content in one color in substantially the same part of the phosphor screen. The different images can be perceived as a composite... | 01/27/1998 |
| 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 |
| 5557344 | Multi-beam group electron gun for color CRT A multi-beam electron gun for a color cathode ray tube (CRT) includes a plurality of vertically spaced, horizontal inline beams, where each inline array of beams provides the three primary colors of red, green and blue and adjacent inline beam arrays simu... | 09/17/1996 |
| 5418426 | Picture tube having a plurality of guns It is known to provide a large screen area using a picture tube having a plurality of guns. The object is to provide a transition of continuous brightness, so that the partial picture transitions are no longer perceptible. This is achieved in that a pictu... | 05/23/1995 |
| 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 |
| 5257096 | Monitor television receiver A monitor television receiver for displaying or supplying a color video output has a circuit for measuring the cathode currents of electron guns for three primary colors in a cathode-ray tube. A memory stores coefficients to form functional expressions re... | 10/26/1993 |
| 5214499 | System for making raster location adjustments on a multi-color display screen A system for making location adjustments on a display screen raster having horizontal and vertical lines crossing at crossing points includes a cursor which is moveable to the crossing points. The visibility of the cursor is enhanced because the horizonta... | 05/25/1993 |
| 5040058 | Raster graphic helmet mountable display A helmet mountable display includes electronic apparatus for ultimately providing sweep lines of a full color raster graphic image and electromechanical apparatus for disposing the sweep lines to appear at their proper spatial position at the image. The e... | 08/13/1991 |
| 4954901 | Television receiver with two electron beams simultaneously scanning along respective verticaly spaced apart lines A television receiver for providing a non-interlaced display of a received television signal intended for interlaced display includes a cathode ray tube having first and second cathodes, control grids and a fluorescent screen, a circuit for applying a fir... | 09/04/1990 |
| 4884874 | Method of addressing display regions in an electron beam-addressed liquid crystal light valve An electron beam addressed liquid crystal light modulator or "valve" (10) includes a liquid crystasl cell (40) having a target surface (45) which a writing electron beam (60a) and an erasing electron beam (60b) address to provide a display image. The writ... | 12/05/1989 |
| 4800433 | Progressive scanning conversion system for television image display apparatus A progressive scanning conversion circuit for converting video signals corresponding to an original image from a predetermined format video signals having an increased scan line rate, the video signals each having a brightness level corresponding to a por... | 01/24/1989 |
| 4765717 | Liquid crystal light valve with electrically switchable secondary electron collector electrode An electron beam addressed liquid crystal light modulator or "valve" includes a liquid crystal cell having a target surface which a writing electron beam and an erasing electron beam address to provide a display image. The writing electron beam and the er... | 08/23/1988 |
| 4763048 | Method and circuit for controlling the operating point of a video amplifier When controlling the working point of video output stages in monitors, data display cathode ray tubes (CRTs) (10) and the like, in which the scanning raster is applied to the screen of the CRT entirely on the visible portion of the screen, and to permit c... | 08/09/1988 |
| 4748497 | Television receiver automatic color temperature adjusting system with start up control An automatic color temperature adjusting system for a television receiver which is capable of eliminating an unstable picture condition during the turn on transition period. The automatic color temperature adjusting system has a gain control circuit assoc... | 05/31/1988 |
| 4723158 | Method and apparatus for performing scan line diagnostic testing in a video monitor during a last-line overscan of a normal display raster A disclosed last-line overscan system and method allow for sampling of video display characteristics such as RGB cathode currents during each frame of displayed video for an underscanned video monitor without distortion of the visual display. Detection of... | 02/02/1988 |
| 4692793 | Circuit for blanking the video of a television set for a time after turn-on A color picture tube for displaying a color picture which has a signal supply that includes a plurality of primary color signal channels for supplying a plurality of primary color signals to the color picture tube and current detecting means connected to ... | 09/08/1987 |
| 4686429 | CRT color convergence measurement A computer controlled system for measuring convergence in a multi-electron beam color cathode ray tube (CRT) provides a high speed coarse search and fine search sequence for locating the position of incidence of the electron beams on the CRT's faceplate. ... | 08/11/1987 |
| 4679065 | Automatic white control circuit for color television receiver A color television receiver with automatic reference white control circuit has negative feedback loops for automatically adjusting the amplitude of each cathode driving voltage of R, G and B electron guns, so that the magnitude of each cathode current of ... | 07/07/1987 |
| 4654712 | High frequency wide bandwith video amplifier with high tracking linearity A wide bandwith video amplifier circuit with a high output DC voltage bias and which is capable of high tracking linearity. The video amplifier circuit comprises an AC pre-amplifier, a DC restorer amplifier stage and a DC output stage. The DC restorer amp... | 03/31/1987 |
| 4633299 | Color temperature control circuit using saturation level detector A color television receiver is disclosed, which includes a circuit for detecting a color saturation level of a color from red, green and blue primary color signals or from color difference signals and a color temperature control circuit for increasing at ... | 12/30/1986 |
| 4631576 | Nonuniformity correction system for color CRT display A system for the correction of nonuniformities in both color and brightness as provided for the correction of such nonuniformities in a color CRT display. The system employs correction signals which are obtained by photographing a white screen of the disp... | 12/23/1986 |
| 4604647 | Cathode ray tube driver circuit A driver circuit for a CRT is disclosed wherein opposite polarity control signals are derived from a single video color signal and are applied to the cathode and grid of an electron gun of the CRT to control beam current and consequently the light output ... | 08/05/1986 |
| 4590463 | Digital control of color in CRT display The color of a pixel produced on the face of a CRT is determined by the n bits of a hue/saturation digital input signal which is applied to a decoder to select one of 2n output lines of the decoder. Each output line is connected through a red, ... | 05/20/1986 |
| 4516152 | Video signal processor with automatic kinescope white balance and beam current limiter control systems A color television receiver includes a network for automatically limiting excessive kinescope beam currents developed in response to video signal image information, and a white balance control network for automatically controlling the white level drive (g... | 05/07/1985 |
| 4502073 | Noise suppressing interface circuit in a kinescope bias control system An interface circuit in a kinescope bias control system includes a transistor with a base electrode coupled to the output of a kinescope drive amplifier in a television receiver, an emitter electrode coupled to a kinescope cathode, and a collector output ... | 02/26/1985 |
| 4494146 | Wideband kinescope driver amplifier A kinescope driver amplifier comprises a resistive feedback network coupled from the output to the input of the amplifier. The feedback network includes first and second series resistor of mutually different values. The larger value resistor is connected ... | 01/15/1985 |
| 4451852 | Image display apparatus A video image display apparatus of the flat tube and multi line cathode type of the present invention includes a phosphor screen, and a predetermined number (e.g. 15) of line cathodes for in-turn emitting a predetermined number of horizontal rows of elect... | 05/29/1984 |
| 4449148 | Image display apparatus A flat type display apparatus includes an electron beam source for emitting a row of a large number of electron beams, and a phosphor screen having a phosphor layer which emits light in response to impingement by the electron beams. An electron beam conve... | 05/15/1984 |
| 4418359 | Omnispectravision A system for providing a visual color display of multi-spectral and/or multi-sensor data particularly that provided by a trichroic infrared scanning system, which includes the assignment of visible color signals to such data in a manner to maximize color ... | 11/29/1983 |
| 4361850 | Color television receiver with character display function A color television receiver has a decoder for producing red, green and blue driving currents which are applied to red, green and blue control circuits, respectively, for combining these three colors to establish one of seven colors on a screen of a cathod... | 11/30/1982 |
| 4348688 | Multibeam cathode ray tube apparatus Multibeam cathode ray tube apparatus incorporates control circuits for maintaining the relative intensity of the beams over a range of settings of the brightness control. As applied to a three beam color tube, at least two, and preferably all three, of th... | 09/07/1982 |
| 4347528 | G2 Set-up circuit for a television receiver A circuit is disclosed for establishing proper video output voltages in a color television receiver prior to setting the receiver's G2 voltage. In the preferred embodiment, the circuit includes three emitter follower stages, each coupled to the output of ... | 08/31/1982 |
