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| Number | Title | Issue Date |
| 7230975 | Adaptive pilot filter for a wireless communication system Techniques to filter pilot symbols for a pilot in an “adaptive” manner to provide an improved estimate of the response of a communication channel. A received signal may experience different channel conditions at different times, and different multipaths may also... | 06/12/2007 |
| 7061543 | Method and circuit for image-in-image overlay The invention relates to a method and a circuit arrangement for picture-in-picture insertion, in which a sequence of insertion pictures (Kj=K1,K2, . . . ) is read, with vertical decimation (VD≧1), into a memory device (S) and subsequently read out, the sequence of... | 06/13/2006 |
| 7012648 | Image conversion method and image conversion apparatus An image conversion apparatus includes a progressive scanning converter for receiving an input image as a first interlaced scanning image having a field frequency of m (m: integer not less than 2) fields/sec, and converting the first interlaced scanning image into a... | 03/14/2006 |
| 6965726 | Slow video display trick mode The invention concerns a method (200) and system (100) for performing a trick mode on a video signal containing a plurality of original pictures. The invention includes the steps of, in response to a trick mode command, selectively repeating (216 | 11/15/2005 |
| 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 |
| 6947488 | Scalable MPEG-2 video decoder A system and method for scaling an MPEG-2 video decoder subject to a resource constraint. A decoder system is provided for decoding compressed video data arranged in a group of pictures, wherein the group of pictures include I pictures, P pictures and B pictures. Th... | 09/20/2005 |
| 6947387 | Video data resending method A video data resending apparatus and method is disclosed. The present invention is capable of performing a selective resending process with respect to a local bit error of a previously sent video data packet, using a CONTRAXPAND™ buffer. The present invention has ... | 09/20/2005 |
| 6839384 | Method and apparatus for decoding compressed video signals The top field of a coded picture is exclusively decoded. If the decoded field is structured as field picture and the top field of a reference picture is referenced, decoded motion vectors are used to perform a motion compensation. If the nonexistent bottom field of ... | 01/04/2005 |
| 6756996 | Obtaining a high refresh rate display using a low bandwidth digital interface A sequence of input groups, each input group containing a number of input pixels, is received. A sequence of output frames is provided, where each output frame contains a number of output pixels to refresh a display screen. The pixels of each output frame include (1... | 06/29/2004 |
| 6546156 | Image processing device An image processing device having an improved image processing speed and capable of detecting an object at high speed. Where frames are thinned out for real-time processing during frame processing of an image signal, line interval expanding unit expands t... | 04/08/2003 |
| 6356309 | Video coding device and video transmission system using the same, quantization control method and average throughput calculation method used therein Video data coded in a coding device 12 is temporarily stored in a temporary buffer 13 before transmitted to a transmission buffer 171. A frame dropping/quantization control device 16 cancels the video data in the temporary buffer 13 if the amount of infor... | 03/12/2002 |
| 6356317 | Image processor A frame memory is provided which has five fields each having N slots, and three additional slots. Each slot has a storage capacity to store eight image lines. Four fields of the five fields serve to store motion compensation reference frames. The remainin... | 03/12/2002 |
| 6353632 | Video processing system with real time program duration compression and expansion The running real time length of combined video and audio signal programs is shortened or lengthened by deleting or repeating individual fields or frames and corresponding amounts of audio segments. The video and audio portions of the programming material ... | 03/05/2002 |
| 6304297 | Method and apparatus for manipulating display of update rate A method and apparatus for manipulating the display update rate of video signals to minimize the adverse visual effects caused by adding or deleting frames begins by determining a need value for manipulation of the display update rate. The need value corr... | 10/16/2001 |
| 6219157 | Image coding apparatus An image coding apparatus comprises a divider for dividing an image into a plurality of coding blocks overlapped to each other, and a coder for coding them for each of the coding blocks divided by the divider.... | 04/17/2001 |
| 6195387 | Video processing system with real time program duration compression and expansion The running real time length of combined video and audio signal programs is shortened or lengthened by deleting or repeating individual fields or frames and corresponding amounts of audio segments. The video and audio portions of the programming material ... | 02/27/2001 |
| 6118491 | System and method for enforcing interlaced field synchronization in the presence of broken alternation in an MPEG video datastream A system and method for synchronizing a decoded, interlaced-field data stream with an interlaced field display. A system for displaying an MPEG encoded data stream includes an MPEG decoder which converts the encoded data stream into a sequence of frames. ... | 09/12/2000 |
| 6115499 | Repeat field detection using checkerboard pattern The present invention is directed to a method for encoding an uncompressed digital video bit stream. The video bit stream comprises successive frames, each of which includes one or more odd fields and one or more even fields. Such frames with more than tw... | 09/05/2000 |
| 6049570 | Picture coder A picture coder decodes P frames without having to wait for the next I frame even if a data loss occurs, and ensures quick recovery from degraded picture quality. The picture coder, which controls updating of a reference picture based on a decoding status... | 04/11/2000 |
| 5923784 | Analyzer and methods for detecting and processing video data types in a video data stream A video data stream analyzer modifies an input digital video signal so that the resulting output digital signal can be optimally compressed by a digital video encoder. The video data stream analyzer eliminates redundancy in the input video signal, and reo... | 07/13/1999 |
| 5923385 | Processing system with single-buffered display capture A method and apparatus for single-buffered display capture which eliminates a "tearing" problem inherent in certain conventional video display techniques. A video signal including a sequence of frames each having an even field and an odd field is applied ... | 07/13/1999 |
| 5914755 | Image transmission apparatus An image transmission apparatus of this invention generates an image signal for one field at a first rate, forms a first transmission image signal on the basis of the generated image signal, outputs the formed first transmission image signal for one field... | 06/22/1999 |
| 5872726 | Memory control apparatus for compression and expansion of data A memory control apparatus for compression or expansion of data includes an input end for receiving a signal indicating the data rate of the original data and a second signal indicating the data rate of the target data, a first unit for generating an addr... | 02/16/1999 |
| 5828786 | Analyzer and methods for detecting and processing video data types in a video data stream A video data stream analyzer modifies an input digital video signal so that the resulting output digital signal can be optimally compressed by a digital video encoder. The video data stream analyzer eliminates redundancy in the input video signal, and reo... | 10/27/1998 |
| 5488422 | Video scan converter including the modification of spatially interpolated pixels as a function of temporal detail and motion A video scan converter includes an input for receiving a video signal at a first scan rate, an output for providing a video signal at a second scan rate and a main path leading between the input and the output. The main path includes a scan line interpola... | 01/30/1996 |
| 5459585 | Apparatus and method of storing image signals An apparatus for storing high definition image signals capable of processing high definition image signals and low definition image signals using the same apparatus. A storage medium is provided with an interface of low definition image signals. High defi... | 10/17/1995 |
| 5442403 | Wide-screen TV signal transmission apparatus A wide-screen TV signal transmission apparatus includes transmitting a wide-screen TV signal generator for generating a wide-screen TV signal source; a scanning line converter for down-converting a wide-screen TV signal with an integer conversion ratio to... | 08/15/1995 |
| 5384598 | System and method for frame differencing video compression and decompression with frame rate scalability A system and method of compressing original video data expressed in a plurality of digitally coded frames which enable decompression and playback of resulting compressed video data at one of a plurality of frame rates while maintaining temporal fidelity o... | 01/24/1995 |
| 5347314 | Video scan converter A video scan converter includes an input for receiving a video signal at a first scan rate, an output for providing a video signal at a second scan rate and a main path leading between the input and the output. The main path includes a scan line interpola... | 09/13/1994 |
| 5321508 | Video image data recording apparatus A video image data decoding apparatus includes a pair of buffer memories for storing decoded intra coded picture data or forward prediction coded picture data, a switch circuit for selecting either the decoded intra coded picture data or forward predictio... | 06/14/1994 |
| 5315327 | High scanning rate to standard scanning rate television signal converter with smooth moving edge conversion Odd fields of a high speed television signal within even field intervals of a television signal having a reference frequency are readout from field memories 6, 7 with the time base of the odd fields being expanded. An arithmetical mean of the odd fields t... | 05/24/1994 |
| 5313303 | Aspect ratio control for picture overlays A picture overlay system assures proper image aspect ratios for picture overlays. The system comprises a video memory and a control circuit for writing and reading information from a video signal into and out of the video memory, the information relating ... | 05/17/1994 |
| 5283659 | Apparatus and method of high vision signal recording using expansion techniques and digital drop-out compensation An apparatus in which a high vision signal having 1125 horizontal lines per frame is divided into three signals and three channel signals each having 375 horizontal lines per frame are obtained wherein the resultant three channel signals are time base exp... | 02/01/1994 |
| 5208668 | Television transmission system including encoder and decoder compatible with current television standards having a 4:3 aspect ratio A television transmission system compatible with current television standard includes a compatible wide aspect ratio television signal containing vacated spatial areas along upper and lower edges of an image defined by lines remaining after lines are sepa... | 05/04/1993 |
| 5159460 | Video signal recording apparatus that converts high definition video signals into signals usable with conventional television systems A video signal recording method and apparatus in which a video signal for a high definition television system is converted into a video signal for a current television system and recorded on record media. These video signals are recorded so as not to caus... | 10/27/1992 |
| 5146325 | Video signal decompression apparatus for independently compressed even and odd field data In a video decompression system for decompressing compressed image data wherein odd and even fields of video signal are independently compressed in sequences of intraframe and interframe compression modes and interleaved for transmission, the odd and even... | 09/08/1992 |
| 5057921 | Process and device for temporal image interpolation, with corrected movement compensation A process, and a corresponding device, for temporal image interpolation with corrected movement compensation, respectively use a consistency analysis step or circuit to analyse the defects in a field of movement which results from the movemenet estimation... | 10/15/1991 |
| 4743973 | Encoding method for facsimile signal An encoding method for facsimile signal which is characterized by encoding data of a line selected out of the all lines of input facsimile signals in a manner of skipping over a predetermined number of lines according to a predetermined encoding method an... | 05/10/1988 |
| 4620225 | System for TV transmission A TV transmission system having an increased picture quality. Depending on whether the picture to be transmitted is a still picture or a motion picture, the TV signals are derived either from the scanning of the scene or by interpolation from consecutive ... | 10/28/1986 |
| 4589110 | Signal processor (system) for reducing bandwidth and for multiplexing a plurality of signals onto a single communications link The bandwidth required for a regularly occurring signal, such as a television signal, as received from a signal source can be substantially reduced by not transmitting each and every one of the horizontal scan lines. Rather, firstly, one or more selected ... | 05/13/1986 |
