Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7218418 | Digital de-screening of documents A method and a system for de-screening an image signal. The system comprises a filter bank, a control module and a blend module. The filter bank filters the image signal and produces a set of filter output signals. The control module generates at least one control s... | 05/15/2007 |
| 7189246 | Medical instrument holding device A medical instrument holding device includes a grasping portion onto which a medical instrument is mounted, an acceptant arm supported by a link mechanism, and a ball joint element adapted to be fixed to and released from the acceptant arm. The grasping portion is c... | 03/13/2007 |
| 7142218 | Image display device and electronic apparatus using same, and image display method of same An image display device of the present invention is provided with a liquid crystal display panel for displaying an image in accordance with an input of a chrominance signal, a sensor for sensing light characteristics of external light, and a chrominance signal conve... | 11/28/2006 |
| 7050114 | Picture signal contrast control The present invention relates to controlling contrast in at least part of a picture. The contrast control is performed by reducing the saturation (2–4) of the picture during contrast increase (1). ... | 05/23/2006 |
| 7042520 | Method for color saturation adjustment with saturation limitation A method for adjusting and limiting a color saturation level S of a color pixel of an input image includes steps of: obtaining a first chrominance value U and a second chrominance value V representing the color pixel of the input image; determining the color saturat... | 05/09/2006 |
| 7034785 | Color liquid crystal display In an ECB LCD, in which a liquid crystal layer enclosed between a pair of substrates is driven based on R, G, B signals so that transmittance of R, G, B light components at the liquid crystal layer is controlled for color display, the voltage levels of the liquid cr... | 04/25/2006 |
| 6947099 | Automatic chroma control circuit with controlled saturation reduction An ACC system includes a controllable amplifier having an input coupled to receive a chroma input signal and an output for providing an chroma output signal of controllable amplitude. A first feedback path, including a cascade connection of means for providing a sig... | 09/20/2005 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6888579 | Method and system for tint control for component video signals A method and system are provided for controlling tint of component video signals. The system includes a first input for receiving a first component video signal; a second input for receiving a second component video signal; circuitry including a first differential a... | 05/03/2005 |
| 6268888 | Mechanism for adaptive selection of anti-ghosting filtering A mechanism for adaptive selection of anti-ghosting filtering accesses a first plurality of coefficients being used by the anti-ghosting filtering and compares a first set of one or more of the first plurality of coefficients to a first predetermined valu... | 07/31/2001 |
| 6177962 | Apparatus and method for preventing oversaturation of chrominance signals A chrominance signal C is separated (30) into component vectors U and V and coupled via respective paths each including a controllable gain amplifier (60,62) to respective outputs (56,58). A chroma overload protection unit (50) is provided including a sat... | 01/23/2001 |
| 5757439 | Method for detecting color burst signal amplitude for chrominance signal level control and an apparatus therefor A method for detecting color burst signal amplitude of a composite color image signal for use in an automatic color control circuit includes the steps of separating the burst signal loaded on the chrominance signal into first and second chrominance refere... | 05/26/1998 |
| 5621479 | Method of driving a liquid crystal display device A method of driving a liquid crystal display device for converting a composite video signal into RGB analog video signals by a chrominance circuit, and controlling the transmittance of each pixel corresponding to each color or red, green and blue on a liq... | 04/15/1997 |
| 5255080 | Contrast corrector for video signal For a video apparatus such as a television receiver, a gray level correcting device is provided to correct luminance and color saturation of a video signal, thereby making the reproduced image clear and vivid. In this device, at least one of the differenc... | 10/19/1993 |
| 5045926 | Television image display apparatus In a television image display apparatus, one field of an input video signal is divided into a plurality of areas in each of which image information is sampled, and an arithmetic processor provides a video control signal on the basis of preset adjusting da... | 09/03/1991 |
| 4962417 | Chroma overload detector using a differential amplifier In a color television receiver having first and second chroma amplifiers, a chroma overload detector uses a differential amplifier for peak detection of a chrominance signal over a predetermined threshold level, and in response thereto, for generating a c... | 10/09/1990 |
| 4635102 | Chroma signal amplitude control apparatus A chroma overload system includes an up/down counter to develop a chroma gain/attenuation signal. Overload conditions are detected and responsive thereto pulses are generated to cause the counter to decrease chroma gain. In the absence of overload conditi... | 01/06/1987 |
| 4630102 | Digital chroma overload system A system for detecting overload conditions of a chrominance signal in which the chrominance signal is compared to a predetermined maximum desired amplitude value. Occurrences of the chrominance signal exceeding the predetermined amplitude are considered t... | 12/16/1986 |
| 4602276 | Digital signal level overload system A signal overload circuit for use in e.g. a digital TV receiver includes a piecewise linear weighting circuit which weights samples of greater magnitude proportionately more heavily than samples of lesser magnitude. The weighted samples are applied to an ... | 07/22/1986 |
| 4511916 | Method and device for correcting chrominance signal A method and a device for correcting a chrominance signal is arranged such that, in obtaining a carrier chrominance signal by modulating a subcarrier with an input chrominance signal, a first hue component which has a phase about plus 90° relative to the... | 04/16/1985 |
| 4447826 | Digital television receiver automatic chroma control system The gain of the chroma signal in a digital television receiver is controlled in accordance with the value of a composite gain factor which is an accumulation of gain control factors provided by a user color control, automatic chroma control, and chroma ov... | 05/08/1984 |
| 4349834 | Chroma signal gain control circuit A chroma signal gain control circuit is constructed to include a first band pass amplifier, a second band pass amplifier, a burst gate circuit, a switch circuit and an ACC detecting circuit. The output signal of the first band pass amplifier is fed to the... | 09/14/1982 |
| 4183047 | Chroma level stabilizer A chroma level control circuit for a television receiver is responsive to the average of selected portions of color difference signals to reduce deviations from a viewer-selected chroma level. The preferred chromal level is selected by the viewer and the ... | 01/08/1980 |
| 4106055 | Automatic color level control system with threshold tracking A DC controlled amplifier is used to control the chrominance gain, and hence the color saturation, of a television receiver. The voltage on the wiper of a Color Control variable resistor and the output of an Automatic Color Level (ACL) detector are combin... | 08/08/1978 |
| 4106054 | Automatic chroma level system A color television receiver chrominance channel has first and second chrominance amplifiers supplying chrominance demodulators. An automatic chrominance control (ACC) is operative upon the first chrominance amplifier to maintain a substantially constant s... | 08/08/1978 |
| 4054905 | Automatic chrominance gain control system An automatic gain controlled chrominance signal amplifier system for a color television receiver is arranged to process composite chrominance signals having burst and image-representative components. First, second and third amplifier stages are provided f... | 10/18/1977 |
| 3982273 | Switching arrangement for flesh tone correction and chrominance overload control circuits Switching apparatus is included in a color television receiver for changing the threshold of a saturation overload detector and simultaneously changing the gain characteristics of an associated chrominance signal amplifier. The overload detector is operat... | 09/21/1976 |
| 3968516 | Automatic gain control circuit An automatic chrominance gain control circuit for a color television receiver distinguishes between lower frequency chrominance variations (large color objects) and higher frequency chrominance variations (small objects) to minimize gain control for large... | 07/06/1976 |
| 3967313 | Chrominance signal gain control circuit A chrominance signal gain control circuit comprising a band pass amplifier of a gain control type for amplifying a signal including a burst signal and a chrominance signal while the gain thereof is controllable as a function of a control voltage input, a ... | 06/29/1976 |
| 3962723 | Automatic peak color control circuit In a television receiver having a chrominance signal channel coupled to a cathode ray tube, an automatic peak color control circuit includes an envelope detector means providing a combined chroma envelope and DC potential, a means for shifting the level o... | 06/08/1976 |
| 3943560 | Picture level control with compatible automatic chroma control A picture level control for a color television receiver which simultaneously varies luminance and chrominance signal levels and additionally provides a compensating voltage to prevent automatic color controls from counteracting the intended chrominance va... | 03/09/1976 |
| 3936869 | Automatic color level circuit with peak detector A color television receiver includes an automatic chroma control (ACC) system and a switch selectable manual color level potentiometer and a closed loop automatic color level limiter (ACL) with a preset color level potentiometer. The ACL loop is of the sa... | 02/03/1976 |
