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| Number | Title | Issue Date |
| 7358995 | Captured-image-signal processing method and apparatus and imaging apparatus An imaging apparatus includes a solid-state imaging device that outputs a captured image signal in current mode, which in turn is subjected to CDS processing in current mode by a current signal detector, thus suppressing FPN noise. A captured image signal output by ... | 04/15/2008 |
| 7236206 | Interpolation method for a video signal, and display device with function of interpolation for a video signal A video signal interpolation can adapt an image of input video signal to voluntary aspect ratios widely. The invention also allows a display device to uniformly line-sequential scan and uses at least two line-memories (LM1, LM2) which are applied with ... | 06/26/2007 |
| 7184099 | Controllable signal baseline and frequency emphasis circuit A circuit for selectively controlling signal baseline and frequency emphasis. An amplifier with selectively controllable feedback circuitry allows higher frequency components of a signal to be emphasized over lower frequency components while also allowing control ov... | 02/27/2007 |
| 7161576 | Matrix-type display device A matrix-type display device includes a data generating circuit 102 for multiple scans for inserting blanking data to image data for one frame period of an image, and a timing controlling circuit 103 for multiple scans for generating clocks used by a g... | 01/09/2007 |
| 7126645 | Back-porch clamp The invention teaches a method, means and apparatus for clamping a back porch interval of a video signal including clamping a sync-tip level of said video signal to a variable reference voltage, comparing a back-porch voltage level of the sync-tip clamped video sign... | 10/24/2006 |
| 7119846 | Video signal processing circuit and method for converting number of scan lines and image display device using the same A double-rate signal achieved by subjecting a video signal to double-rate conversion is supplied to a scan line number converter. In the converter, the portion of the effective scan lines of the double-rate signal is written into a frame memory on the basis of a sig... | 10/10/2006 |
| 7106204 | Shared attention detection system and method An attention detection system detects a condition of shared attention of plural persons. The system includes plural body language detectors each associated with a different person for detecting body language of the associated person. An analyzer receives body langua... | 09/12/2006 |
| 7102698 | Method and apparatus for controlling brightness of image processing device A method and apparatus for controlling the brightness of an image processing device to improve a brightness characteristic of an image signal, by reducing a pedestal voltage range and correspondingly expanding a brightness control voltage range in a highlight mode. ... | 09/05/2006 |
| 7027098 | Picture-signal processing apparatus and method using weighting for black-level control A digitized luminance signal, representing the luminance component of a picture signal, is adjusted according to data stored in a memory. The data are output according to the value of the digitized luminance signal and multiplied by a weighting signal generated acco... | 04/11/2006 |
| 6970203 | Automatic cut-off system The automatic cut-off system includes a video data processing circuit, a cut-off control circuit, a drive circuit, and a level control section. The video data processing circuit adds a cut-off reference pulse having a predetermined level to primary-color signals of ... | 11/29/2005 |
| 6967691 | Color difference signal processing A color video display signal processor comprises a source of a color difference signal and an analog to digital converter for converting the color difference signal to a digital signal. A potential divider is coupled to reference voltages of the analog to digital co... | 11/22/2005 |
| 6937287 | Video processing apparatus and method In order to reduce the total capacity of a ROM used for adjustment of the black level and the white level of a digitized luminance signal for a television receiver, for example, a comparator compares the input luminance signal with a predetermined threshold value, a... | 08/30/2005 |
| 6927800 | Video signal processing circuit and method for converting number of scan lines and image display device using the same A double-rate signal achieved by subjecting a video signal to double-rate conversion is supplied to a scan line number converter, wherein the portion of the effective scan lines of the double-rate signal is written into a frame memory based on a signal achieved by m... | 08/09/2005 |
| 6888889 | Image information conversion apparatus and image information conversion method The system provides an image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I pi... | 05/03/2005 |
| 6529248 | Method and apparatus for improved signal restoration A method and/or apparatus is capable of performing high accuracy digital level restoration with a high degree of noise immunity provided by a passive clamping stage.... | 03/04/2003 |
| 6518998 | Image quality by automatically changing the black level of a video signal A video camera and imaging system having signal processing circuitry configured to change the black level (pedestal) of a video signal in response to comparing an overall system gain (for instance, a gain value and the electronic exposure time of the imag... | 02/11/2003 |
| 6339435 | Device to automatically adjust video signals to a blanking level and method therefor A device to automatically adjust video signals to a blanking level to realize a precise intended color by being fed back with video signals at the blanking level stored in an ASIC (application-specific integrated circuit), which stores video signals at a ... | 01/15/2002 |
| 6226037 | AKB interface circuit for kine driver IC An AKB interface apparatus in a display system (10), includes a video signal processing IC (12) having outputs coupled via respective kinescope driver ICs (18,20,22) to respective kinescope cathodes (K1,K2,K3) for display of a color image, the signal proc... | 05/01/2001 |
| 6204882 | γ matching of a video processor by means of three measured currents Recent circuit concepts inject measurement lines, for cutoff and drive control of the cathode current, into each color channel during the vertical frame blanking period. Owing to the physically dependent exponential beam current characteristic profile as ... | 03/20/2001 |
| 6008864 | Composite video signal backporch soft-clamp system using servo loop A backporch soft-clamp circuit using a servo loop clamps the blank or DC level of a composite video signal to a known value without altering the other components of the signal. The values of the components of the composite video signal are determined by d... | 12/28/1999 |
| 5841488 | Multiple video input clamping arrangement An apparatus having a selectable first mode of operation for clamping an input signal to a first reference level and a selectable second mode of operation for clamping a signal derived from the input signal to a second reference level.... | 11/24/1998 |
| 5748263 | System for automatically producing infrared control signals A system for automatically editing commercial messages within a television broadcast. Connection of the apparatus to a video system is simplified over the prior art by requiring only one video input connection. The video input of the apparatus can be conn... | 05/05/1998 |
| 5748257 | Picture information detecting apparatus for a video signal A picture information detecting apparatus includes a picture area signal output circuit to detect a picture area excluding black band portions from the input video signal to produce a picture area signal to designate the picture area from which picture in... | 05/05/1998 |
| 5677742 | Apparatus and method for displaying a clamp point The apparatus for displaying a clamp point on a screen includes an input amplifier; a clamp circuit which includes a sync separation circuit and a one shot; and a blanking circuit. The video signal is applied to the clamp circuit via the input amplifier a... | 10/14/1997 |
| 5657098 | Control circuit for use with a cut-off adjusting circuit and a drive adjusting circuit Control circuits for the cut-off and drive control of video equipment. A first control device includes a cut-off control circuit and drive control circuit for use in conventional modes. A second control device includes a cut-off control circuit for mode s... | 08/12/1997 |
| 5548343 | Method of signal alignment in television and device for implementing it A television (TV) signal alignment method and device are disclosed which provide a clear TV picture. The alignment method provides reduced noise. Despite transmission noise, the alignment method reduces noise at frequencies lower than 15 kHz which is gene... | 08/20/1996 |
| 5500688 | Synchronizing signal clamping circuit of image signal processing integrated circuit A synchronizing signal clamping circuit for an integrated image signal processing circuit has an input buffer circuit for receiving a composite image signal; a level clamping circuit for clamping a synchronizing signal tip level of the composite image sig... | 03/19/1996 |
| 5357279 | Automatic knee control circuit An automatic knee control circuit including a knee circuit for setting a knee point and a knee slope, a detecting circuit for detecting an output signal of the knee circuit and a comparing circuit for comparing an output of the detecting circuit with a re... | 10/18/1994 |
| 5345279 | Image signal processing apparatus with analog to digital image conversion An image signal processing apparatus wherein the black level of an analog image signal is adjusted by controlling the clamp level of the inputted analog image signal. The clamped analog image signal is digitalized. Using the digital image signal offset to... | 09/06/1994 |
| 5168362 | Apparatus for displaying standard aspect ratio television signal on wide aspect ratio display screen An image display apparatus includes an automatic pedestal processing circuit for detecting the minimum signal level of the input video signal for controlling the signal level of the video signal on the basis of the results of the detection. A control sect... | 12/01/1992 |
| 4811101 | Black level correction circuit for correcting black level of a video signal A black level correction circuit includes an extraction circuit for extracting a black signal from a video signal as a signal whose level is lower than a reference level, and a black level expanding circuit for expanding in level of the black signal for t... | 03/07/1989 |
| 4797744 | Method and circuit for nonlinear transmission-processing of a video signal A gamma stage of a television camera is automatically provided with regulation removing effect of variations in temperature, supply voltage and the like by means of two series of control pulses added to the video signal in blanking intervals of the signal... | 01/10/1989 |
| 4689680 | Circuit arrangement for generating clamping pulses A circuit arrangement for producing clamping pulses for a clamping circuit for the regeneration of the average picture luminance of a video signal wherein the synchronizing pulses are separated from the video signal by a clipping stage and applied to two ... | 08/25/1987 |
| 4680633 | Circuit and method for producing accurate dc restored video waveform, horizontal sync pulses, and vertical sync pulses A composite video signal is input to a DC restore circuit and a sync separator circuit, the output of which is connected to a sync decoder circuit. The DC restore circuit includes a negative sensing peak sample and hold circuit that generates a first refe... | 07/14/1987 |
| 4631589 | Dark level restoring circuit A dark signal component below a predetermined level of a video signal is varied such that a dark peak level is made to coincide with a pedestal level by feedback control. According to this configuration, a signal component toward a white level side above ... | 12/23/1986 |
| 4549214 | Video signal DC restoration circuit In a wideband video signal processing system, video output signals from a video driver amplifier are passively AC coupled to an intensity control electrode of an image display device. A keyed feedback DC restoration circuit is connected to the intensity c... | 10/22/1985 |
| 4295163 | Keying signal generator responsive to plural input signals A television receiver including a video signal sync separator and keyed signal processing circuits responsive to keying signals supplied by a keying signal generator is disclosed. The output of the sync separator is filtered to develop a bias voltage with... | 10/13/1981 |
| 4210933 | Process and apparatus for digitally clamping pulse code modulated video signals A process and associated apparatus for digitally clamping pulse code modulated video signals is disclosed, including four separate preferred embodiments. The disclosed process first requires that during each horizontal scanning interval a difference betwe... | 07/01/1980 |
| 4124869 | System for the digital clamping of periodic, binary encoded signals A binary encoded signal which is to be clamped at a desired binary value is simultaneously applied to a digital subtractor and a digital adder. The digital subtractor subtracts the difference between the desired binary value and the value of the binary en... | 11/07/1978 |
| 4122492 | DC restoration utilizing the color burst signal A method and apparatus is disclosed for restoring the d.c. level of a composite video signal which has a burst of chrominance subcarrier cycles occuring in the horizontal blanking period. The d.c. level of the signal is measured using integrating techniqu... | 10/24/1978 |
