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| Number | Title | Issue Date |
| 7671926 | Radio frequency modulator Disclosed herein is a Radio Frequency (RF) modulator. The RF modulator includes a Chrominance-to-Luminance (C/L) delay compensation unit for receiving a video signal and compensating for a time delay between the chrominance and luminance signals of the video signal,... | 03/02/2010 |
| 7376277 | Data transform for improved compression of multicomponent images Color image transform coding methods and apparatus which take advantage of redundant information which is normally present in the luminance and chrominance components of a color image are described. The transform coding method of the present invention, can normally ... | 05/20/2008 |
| 7372484 | Method and apparatus for reducing effects of dark current and defective pixels in an imaging device A method and apparatus for identifying and compensating for the effects of defective pixels in high resolution digital cameras having image processing apparatus. The apparatus includes a storage system for storing data corresponding to either a dark current referenc... | 05/13/2008 |
| 7356194 | Image processing method, apparatus, and program A blurred image generating section generates a plurality of blurred images Sm (where m=1 to n and n≧2) different in frequency response characteristic from one another, based on an original image S0. A band-limited image generating section generates a plural... | 04/08/2008 |
| 7321399 | Multiplexed analog-to-digital converter arrangement A system such as an audio and/or video system includes a multiplexed analog-to-digital converter arrangement. The arrangement includes an ADC for converting first and second analog signals to first and second digital signals, respectively, and for outputting the fir... | 01/22/2008 |
| 7317481 | Image data correction processing based on sensitivity A signal processing device includes a memory which stores correction data in advance. The signal processing device modifies the correction data stored in the memory on the basis of an image sensing signal obtained by causing an image sensing unit to perform image se... | 01/08/2008 |
| 7301572 | Pixel correction processing apparatus, image processing apparatus, pixel correction processing method, program, and storage medium This invention has as its object to prevent degradation of the image quality caused by insufficient or excessive correction of a defective pixel, and realize high-speed, high-precision correction processing for a defective pixel. To achieve this object, an apparatus... | 11/27/2007 |
| 7269377 | Process cartridge A process cartridge detachably mountable to an image forming apparatus for forming an image on a recording material includes a first unit including at least an image-bearing member, a second unit including at least a developing device for developing an electrostatic... | 09/11/2007 |
| 7199839 | Color signal processing device for multi-primary color display and method thereof A color signal processing apparatus for a multi-primary display with a simple circuit construction and a color signal processing method achieves a display white by more than four display primaries. The color signal processing apparatus has a tristimulus value calcul... | 04/03/2007 |
| 7193547 | DAC/ADC system A DAC/ADC system for generating reference clocks for DAC/ADC by a look-up table method. The DAC/ADC system includes a sampling signal generator, a DAC, and an ADC. The sampling signal generator generates first and second sampling signals according to first and secon... | 03/20/2007 |
| 7193598 | Noise suppressing method for switching on/off flat panel display A noise suppressing method for switching on/off a flat panel display. A signal detect circuit and a video signal processor are embedded in a time controller IC. At the switch-on transient, the signal detect circuit functions to detect whether the signal is stable. W... | 03/20/2007 |
| 7102673 | Defective pixel specifying method, defective pixel specifying system, image correcting method, and image correcting system A defective pixel specifying method and a defective pixel specifying system for a semiconductor device having a defective pixel are provided. Also provided are an image correcting method and an image correcting system for making a defective pixel inconspicuous on th... | 09/05/2006 |
| 7068327 | Video encoder and image processing system using same A video encoder capable of adjusting output levels and more effectively utilizing performances of later devices, provided with a level adjustment circuit for adjusting output levels of an input luminance signal, color signal, and composite video signal by adding DC ... | 06/27/2006 |
| 7053959 | Digital video encoder A mask circuit masks a digital video signal so that a video signal of an analog video signal is not outputted for a predetermined period after the start of output of a horizontal synchronizing signal of the analog video signal. A period of masking the digital video ... | 05/30/2006 |
| 7046284 | CMOS imaging system with low fixed pattern noise A CMOS imager system including an active pixel sensor having an access supply which provides distributed feedback, a column buffer (having gain and FPN suppression), and an A/D converter co-located with the sensor such that the effective transmission path between th... | 05/16/2006 |
| 7034894 | Digital-to-analog conversion multiple-format video encoder A multiple-format video encoder stores values of the sine and cosine functions in a ROM. According to the externally specified video format, an address calculating circuit calculates the addresses at which to access the ROM. In the multiple-format video encoder, a l... | 04/25/2006 |
| 6999093 | Dynamic time-of-day sky box lighting A background (sky box) in a video game or other virtual reality environment dynamically changes as a function of a parameter, producing a more realistic display. Luminance-only texture and color texture data are employed to create the background. The color texture d... | 02/14/2006 |
| 6987541 | Video signal processing circuit that can correspond to a plurality of television signal methods A video signal processing circuit. includes: a bell table, a first switch, a carrier generating unit, a second switch and a calculation processing unit. The bell table inputs a color difference signal to output a modulation signal having an amplitude defined by the ... | 01/17/2006 |
| 6961098 | TV encoder with a function of adjusting hue A TV encoder with a function of adjusting hue for receiving a first and second color mixture signals comprises a first and second multiplexors, a sin-cos generator, a first and second multiplier circuits, and an adder circuits. The first multiplexor alternately outp... | 11/01/2005 |
| 6956622 | Method and apparatus for modulating video signals A luminance component of a video signal is modulated in a first frequency band. A chrominance component of the video signal is modulated in a second frequency band. The modulated luminance component and the modulated chrominance component are then transmitted across... | 10/18/2005 |
| 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 |
| 6925181 | Method of protecting high definition video signal A system controls reproduction of a video transmission between a transmitter and a receiver. The system includes an encryptor with an offset generator adapted to receive the encrypted frame key and to generate a sequence of pseudo-random values for the color compone... | 08/02/2005 |
| 6917655 | Coding and decoding a signal modified in accordance with the feedback states of an encoder A data encoding system includes a modifier, an encoder, and a feedback. The modifier receives a first data stream and modifies the first data stream so as to provide a second data stream. The encoder encodes the second data stream in order to provide an output. At l... | 07/12/2005 |
| 6714260 | Monolithic generation of RF for wireless transmission of video A digital imaging system generates a composite video signal and the carrier frequency of a desired television channel is generated internal to the imager integrated circuit. The carrier frequency is then amplitude modulated with the composite video signal by either ... | 03/30/2004 |
| 6525781 | SECAM video standard chroma modulation circuit An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to present a first signal and a second signal in response to (i) a select signal, (ii) a first difference signal and (iii) a second difference signal. The se... | 02/25/2003 |
| 6462789 | Circuit and method for generating chrominance lock A digital video encoder (16) receives a reference clock signal (REF_CLK27) for determining both a short term and a long term phase correction factor. A pulse detector (46) determines a number of sample clock (CLK324) time periods between the reference clo... | 10/08/2002 |
| 6332056 | Circuit arrangement for processing a video signal, including means for avoiding a vertical color shift at horizontal color transitions A video recorder, includes: a filter for performing a comb-filtering operation and supplying a comb-filtered component of a video signal; controllable influencing apparatus for terminating the output of the comb-filtered component and activating instead, ... | 12/18/2001 |
| 6268889 | Video signal processing apparatus and signal transmitting method RGB signals and sync signals H and V are inputted from a personal computer or the like. Additional information is superimposed to a vertical blanking period of the R signal. A timing generating unit generates a sampling pulse on the basis of the sync sign... | 07/31/2001 |
| 6259479 | Letterbox filter apparatus and method A method and apparatus for changing the number of scan lines in a frame of video data to produce an image represented by the video data that corresponds to a desired aspect ratio. The apparatus includes a pair of finite impulse response filters for proces... | 07/10/2001 |
| 6229579 | Color encoder with chrominance subcarrier generator responsive to a plurality of clock rates or frequencies A color encoder is incorporated in an apparatus for reproducing a signal recorded on a disk for a video-CD, CD-G, or similar system. The color encoder serves as an interface between such an apparatus and a television receiver. The color encoder has a colo... | 05/08/2001 |
| 6226042 | Color encoder A color encoder is incorporated in an apparatus for reproducing a signal recorded on a disk for a video-CD, CD-G, or similar system. The color encoder serves as an interface between such an apparatus and a television receiver. The color encoder converts R... | 05/01/2001 |
| 6141064 | Luminance signal generation circuit with single clamp in closed loop configuration A luminance signal generation circuit with single clamp generates a separate luminance signal Y by combining RGB input signals in a weighted manner within a Y-Matrix circuit. During a burst period the single clamping circuit is enabled. When enabled, the ... | 10/31/2000 |
| 6124899 | Method and apparatus for encoding video color information The invention features furnishing a representation of the quadrature amplitude modulation of two input signals (e.g., U and V video signals) based on the phase of a reference signal (e.g., a color burst reference signal). The two input signals are scaled ... | 09/26/2000 |
| 6061101 | Digital color signal modulating apparatus An apparatus to modulate the digital color signal using a simple circuit that utilizes neither multiplier nor ROMs to multiplying a sine wave and cosine wave. The digital color signal modulating apparatus includes a first selector, a second selector 3, an... | 05/09/2000 |
| 6055019 | Converting apparatus A digital component signal derived from a video camera and the like is converted into a digital composite signal such as a color TV signal by a low-cost converting apparatus with a simple circuit arrangement. The converting apparatus includes an encoding ... | 04/25/2000 |
| 6052156 | Digital color encoder having sampling frequency converter A digital color encoder capable of reducing the aperture distortion of D/A conversion and the waveform distortion of the video signal without resulting in the increase of the consumed electric current. At first, digital signals sampled with a sampling fre... | 04/18/2000 |
| 6034796 | Data processor In data processing wherein image data are processed by dividing them into blocks, a chroma data W is obtained from the color difference data WR and WB, and the color difference data WR and WB are corrected accor... | 03/07/2000 |
| 5995164 | Reduction of color transition distortions in NTSC/PAL encoder In a video encoder, the color distortion between pixels can be reduced by encoding the hue transition to limit very large hue (phase) transitions and encode a corresponding smaller phase transition. This produces fewer spurious colors between pixels durin... | 11/30/1999 |
| 5946053 | Image encoder and subcarrier signal generator An image encoder and subcarrier signal generator. The present invention uses a system clock signal to generate a first subcarrier signal and a second subcarrier signal with a phase-delay of 90° behind the first subcarrier signal.... | 08/31/1999 |
| 5929937 | Device and method for generating a composite color signal with digital QAM A device and method for generating a composite color signal are disclosed. The device includes a first memory unit for storing digital cosine data, a second memory unit for storing digital sine data, a first arithmetic unit for multiplying digital color d... | 07/27/1999 |
