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| Number | Title | Issue Date |
| RE40327 | Video signal processing circuit and computer system A video signal processing circuit, in which a horizontal synchronizing signal is separated from an input analog video signal by a synchronism separating circuit, whether a “H” period of the horizontal synchronizing signal continues for more than a prespecified p... | 05/20/2008 |
| 7307670 | Bad editing detection device A bad editing detection device is provided to pre-detect a bad editing of image signal, so as to avoid zigzag effect in the television image. When the input image is from a film, instead of from a video source, the line doubler performs a de-interlace for the film s... | 12/11/2007 |
| 7215380 | Method for detecting video frame types with median filtering The invention relates to a method for detecting video frame types with median filtering, which proceeds a denoising step after calculating the comb factor of each pixel, to avoid incorrect judgment of the frame type resulting from excessive field difference and impr... | 05/08/2007 |
| 7173673 | Expanded switching of video/S-video signals by auto-sense apparatus designed to initiate switching of a different type of video signal and apparatus for emulating one type of signal by another type of signal to initiate said switching A video switching system wherein an integrated circuit designed to switch video signals responsive to a first type of signal is used to switch video signals of a second type of signal which is adapted to emulate the first type of signal. Circuitry for adapting the s... | 02/06/2007 |
| 7110042 | Synchronization signal decoder and associated method The invention relates to a synchronization signal decoder and associated method for improving digital image display. A composite video stream includes a distortion compliant signal and a synchronization signal. A level shift circuit is adapted to shift a voltage lev... | 09/19/2006 |
| 7068325 | Video signal processor and video signal processing method The present invention relates to a video signal processing device for avoiding a phenomenon that noise is upwardly or downwardly shifted due to noise reducing operation when a non-standard signal is input. When a non-standard signal is input as an input video signal... | 06/27/2006 |
| 7009661 | Video signal detecting circuit for adjusting sync signals with a mean difference of the number of pixels from a standard A video signal detecting circuit includes a synchronization detector for detecting a vertical synchronous signal in an input video signal. A counter starts counting pixel clock pulses in response to every vertical synchronous signal thus detected, and outputs a firs... | 03/07/2006 |
| 6992727 | Method for detecting video frame types with adaptive thresholds A method for detecting dynamic video pixels by using adaptive counter threshold values according to field difference value of the frame in the video, thereby to determine whether the frame is an interlaced frame or a progressive frame and to eliminate incorrect judg... | 01/31/2006 |
| 6972803 | Video signal format detector and generator system and method A video processing system and method are provided for generating clock and timing signals from an incoming video signal. The system includes a timing reference circuit for generating a reference clock signal, a video format detector coupled to the reference clock si... | 12/06/2005 |
| 6950147 | Apparatus and method for discriminating color format An apparatus discriminates a color format. The signal processing paths separate a luminance signal and a color signal from a broadcasting signal based on a plurality of color formats. The direct signal path provides a direct output of the broadcasting signal without... | 09/27/2005 |
| 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 |
| 6898310 | Image signal processing method, image signal processing system, storage medium, and image sensing apparatus An image signal processing method and system, which can greatly reduce the data size upon transmitting an image signal or storing the signal in a storage medium, and can obtain a high-quality image by preventing image quality after color processing from deterioratin... | 05/24/2005 |
| 6657675 | Method and apparatus for converting non-standard video broadcast signals to display capable video signals Non-standard broadcast television signals are processed and converted for proper reception and display. Extra or missing horizontal lines are processed using modulo or digital phase lock loop-type circuit to change clock output signal proportionately acco... | 12/02/2003 |
| 6545725 | Apparatus for identifying standard and non-standard video signals In order that such a signal as is conventionally determined to be a standard signal in the unit of one field and determined to be a non-standard signal in the unit of a plurality of fields can be determined to be a non-standard signal, the following are p... | 04/08/2003 |
| 6380982 | Video signal processing circuit and computer system A video signal processing circuit, in which a horizontal synchronizing signal is separated from an input analog video signal by a synchronism separating circuit, whether a "H" period of the horizontal synchronizing signal continues for more than a prespec... | 04/30/2002 |
| 6366327 | Vertical sync detection and output for video decoder A technique for detecting three modes of video input signal and outputting a vertical sync signal based on the input signal. In a first mode, a standard video signal is received and a line counter is used to decode and output the vertical sync. In a secon... | 04/02/2002 |
| 6229577 | Ambient light-dependent video-signal processing In an ambient light-dependent video-signal processing method including the steps of measuring (LDR) an amount of ambient light to obtain a measured amount of ambient light, and processing (VSP) a video signal in dependence upon the measured amount of ambi... | 05/08/2001 |
| 6037990 | Video signal processor for generating a progressive scanning format signal A video signal processor for preventing image damage resulting from when a first signal and a second signal are converted into each other. When a first signal (an interlaced scanning format signal) is inputted, according to a mode discriminating signal fr... | 03/14/2000 |
| 5943101 | Method and circuit arrangement for distinguishing between standard and non-standard CVBS signals For many signal processing arrangements in TV receivers it is necessary to know the type of signal source. A plurality of parameters must be set depending on whether a standard-conforming source and hence a standard signal or a non-standard source (for ex... | 08/24/1999 |
| 5933197 | Display device having a video bandwidth controller A synchronizing frequency of red (R), green (G) and blue (B) video signals is detected by a frequency detector. The resolution of the RGB video signals is calculated by a calculator. When the resolution of the RGB video signals is close to the resolution ... | 08/03/1999 |
| 5760841 | Apparatus for converting a video signal output from composite video instrument and method therefor An apparatus and method for converting a video signal output from a composite video instrument, by which the operating state of a system or the manufacturing state of a system board can be easily recognized, is disclosed. When a normal video signal is not... | 06/02/1998 |
| 5589888 | YC separation and still picture reproducing circuit Two field memories for supplying a composite video signal of a previous frame to a motion detector are provided in performing a three dimensional Y/C separation. An output of the field memory connected to an input terminal is connected to a two dimensiona... | 12/31/1996 |
| 5347318 | Apparatus for processing video signals having different aspect ratios A video signal processing apparatus including an input unit for inputting a video signal, a detecting unit for detecting an aspect ratio of the video signal inputted to the input unit, a holding unit for holding aspect information representing the aspect ... | 09/13/1994 |
| 5339113 | Motion-and nonstandard-adaptive three-dimensional YC separating circuit for NTSC signal In a three-dimensional YC separating circuit including an intra-field YC separating circuit and an inter-frame YC separating circuit, when an NTSC composite video signal is nonstandard and is used for a static image part of an image, a low pass filtering ... | 08/16/1994 |
| 5122864 | Video signal processing apparatus A video signal processing apparatus, for processing a video signal including line-sequential signals, is arranged to detect the kinds of information included in the line-sequential signals obtained during each horizontal scanning period; to collect, for e... | 06/16/1992 |
| 4985757 | Digital video signal processing system A signal separator performs an inter-line operation on a composite color video signal, thereby separating it into a luminance signal and a chrominance signal. A scan converter converts each of the luminance signal and the chrominance signal into a sequent... | 01/15/1991 |
| 4860090 | Digital signal processing circuit driven by a switched clock and used in television receiver for processing standard and nonstandard television signals A digital television receiver includes a decision circuit for deciding whether an input television signal is a standard signal or a nonstandard signal. A first clock signal generator circuit for generating a first sampling clock signal synchronized with a... | 08/22/1989 |
| 4603347 | Intraframe coding and decoding equipment for video signals of different quality Intraframe coding and decoding equipment are used in a communication network for digital video signals. Video signal sources which have various frequency deviations are transmitted by the communication network. Each of the intraframe coding and decoding e... | 07/29/1986 |
