Matches 151 - 200 out of 349 < 1 2 3 4 5 6 7 >
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6078693 Method and apparatus for reproducing encoded data  
A method and apparatus for reproducing data compressed in accordance with a motion picture experts group (MPEG) standard and recorded on a recording medium. The data represents a plurality of...
5973742 System and method for performing motion estimation with reduced memory loading latency  
A system and method for estimating motion vectors between frames of a video sequence which operates with reduced memory loading latency according to the present embodiment. The motion estimation...
5973740 Multi-format reduced memory video decoder with adjustable polyphase expansion filter  
A digital signal decoder system is provided for receiving digital video signals and processing them while reducing the external memory requirements for frame buffer storage for an MPEG-2 decoder...
5969764 Adaptive video coding method  
A method adaptively encodes a sequence of frames including video objects to provide a compressed video signal. The encoding is via a buffer having a ariable input rate and a constant output rate....
5959690 Method and apparatus for transitions and other special effects in digital motion video  
A method and apparatus for transition effects in digitally compressed motion video, such video complying with the MPEG-1 standard. Transitions between two frames of video are effectuated by...
5953457 Method and apparatus for improved video decompression by prescaling of pixel and error terms to merging  
A video decoding apparatus and method greatly reduces the computational burden of video decoding by processing several pixels in parallel, thereby reducing the computational load by a factor...
5946040 Moving picture coding/decoding method and apparatus for decoders of various processing capability  
A moving picture coding apparatus for coding a moving picture and a moving picture decoding apparatus for decoding a coded moving picture are provided. The moving picture coding apparatus is...
5946042 Macroblock coding including difference between motion vectors  
A difference vector determination element used in an apparatus for coding motion vector includes register memories (PMV) of which number is equal to sum of maximum transmission numbers N and M of...
5943469 Moving image processing method and apparatus  
A moving image processing method and apparatus for efficient access to a large amount of moving image data. By the hierarchical structure of storage media for storing the compressed moving image...
5933195 Method and apparatus memory requirements for storing reference frames in a video decoder  
A method and apparatus that compresses reference frame information to efficiently utilize memory within a video decoder. Specifically, the present invention stores one or more reference frames in a...
5929911 Multiformat reduced memory MPEG-2 compliant decoder  
A digital signal decoder system is provided for receiving digital video signals and processing them while reducing the external memory requirements for frame buffer storage for an MPEG-2 decoder...
5926573 MPEG bit-stream format converter for changing resolution  
An apparatus or transforming the resolution of an image from a first image resolution to a second image resolution using operations in the spatial frequency domain. The apparatus converts the...
5923375 Memory reduction in the MPEG-2 main profile main level decoder  
The video memory requisite of an MPEG-2 decoder commonly comprising a stage of decompression of the respective I, P and B-pictures of the MPEG compression algorithm before writing the data in...
5923665 Memory controller for decoding a compressed/encoded video data frame  
A multimedia system includes an audio/video decompresser/decoder for decompressing/decoding a compressed/encoded audio/video data stream in order to generate video images for display on a display...
5920359 Video encoding method, system and computer program product for optimizing center of picture quality  
A digital video encoding method, apparatus and computer program product are described with enhanced encoding of a picture having a plurality of macroblocks. The approach is to partition the picture...
5920353 Multi-standard decompression and/or compression device  
Circuits and methods for subdividing a decoder into functional blocks that can be accessed separately. The decoder includes a decoder module having a parser, a block decoder and a motion...
5909224 Apparatus and method for managing a frame buffer for MPEG video decoding in a PC environment  
A four-buffer MPEG decoder is provided for decoding MPEG video frames. A four-buffer frame controller and control method manage the four frame buffers including decoding, displaying and discarding...
5907372 Decoding/displaying device for decoding/displaying coded picture data generated by high efficiency coding for interlace scanning picture format  
In a decoding/displaying device, the memory capacity or mapping to B pictures is set in consideration of a decoding waiting period, thereby avoiding the competition between a write-in operation and...
5905534 Picture decoding and encoding method and apparatus for controlling processing speeds  
In accordance with this invention, in a moving picture decoding apparatus, MB (Macro Block) buffer 111 is provided to thereby absorb difference between read speed from IDCT (Inverse Discrete Cosine...
5903312 Micro-architecture of video core for MPEG-2 decoder  
Disclosed is a reusable hardware layout ("core") for performing some, but not all, MPEG-2 video decoding functions. The information content of the core may be stored on a machine readable media and...
5903313 Method and apparatus for adaptively performing motion compensation in a video processing apparatus  
A method of adaptively performing motion compensation in a video processing apparatus is provided. The video processing apparatus processes macroblocks of compressed video information. Some of...
5900919 Efficient shot change detection on compressed video data  
A mask matching approach to detect shot changes in MPEG coded video uses reference ratio variances of macroblocks between MPEG coded frames. A function is designed to quantize the results into shot...
5886743 Object-by information coding apparatus and method thereof for MPEG-4 picture instrument  
An object based video information coding apparatus and method for an MPEG-4 system compresses image data without reducing image quality by converting motion-incompensable objects using image data...
5883674 Method and apparatus for setting a search range for detecting motion vectors utilized for encoding picture data  
An apparatus and method for encoding picture data. A motion vector is detected and a distribution range of the detected motion vector is determined. Based upon such distribution range, a motion...
5880786 Apparatus for picture decoding having frame memories commonly connected to one data bus and one address bus  
An apparatus for picture decoding includes a decoder unit for obtaining decoded picture data by decoding coded data of a video signal coded by at least one of intra-frame coding (I frame),...
5878166 Field frame macroblock encoding decision  
A rate control algorithm for an MPEG-2 compliant encoder is described. The rate control algorithm has embodiments useful for constant bit rate and variable bit rate encoding. In particular, the...
5875003 Apparatus and method for encoding a digital video signal  
Apparatus and corresponding method which motion compensate encode a digital video signal pre-filtered in a first filter but use motion information derived from the same video signal pre-filtered in...
5874995 MPEG video decoder having a high bandwidth memory for use in decoding interlaced and progressive signals  
A decoder for a video signal encoded according to the MPEG-2 standard processes either interlace scan signals or progressive scan signals by dynamically reconfiguring a single high-bandwidth...
5867219 Image processing device using high frequency component suppression  
An image processing device which receives digital image data compressed in a form of frequency components and applies signal processing to the digital image data is disclosed. The image processing...
5859668 Prediction mode selecting device in moving image coder  
A moving image coder has a forward predicting motion vector/prediction error amount detecting section for detecting an optimum motion vector from a past frame, making a predicted image and...
5850259 Predictive coding apparatus  
A predictive coding apparatus encodes an input video signal. A prediction error signal of the input video signal is generated by at least another video signal which is coded before or after the...
5847761 Method for performing rate control in a video encoder which provides a bit budget for each frame while employing virtual buffers and virtual buffer verifiers  
A rate control algorithm for an MPEG-2 compliant encoder is described. The rate control algorithm has embodiments useful for constant bit rate and variable bit rate encoding. In particular, the...
5847763 Moving picture transmission system and moving picture transmission apparatus  
A moving picture transmission system enhances the quality of a demand-refreshed image without increasing the amount of code to be transmitted. When a picture data error has been detected, a...
5847762 MPEG system which decompresses and then recompresses MPEG video data before storing said recompressed MPEG video data into memory  
An MPEG compatible decoder receives encoded, compressed data in the form of image representative pixel blocks. The decoder includes a frame memory (20) for storing reconstructed pixel blocks...
5841475 Image decoding with dedicated bidirectional picture storage and reduced memory requirements  
Encoding data are given to a variable-length decoding circuit and are decoded, and are given to a memory so as to be stored therein. The same data are read out from the memory, whereby decoding...
5841476 Coding apparatus for encoding motion picture  
A motion picture coding apparatus for searching a plurality of proposed coding modes and/or parameters, for selecting a suitable coding mode and/or a suitable parameter, and for encoding motion...
5838375 Method and apparatus for coding an image and reducing bit generation by HVS (human visual sensitivity)  
A method and apparatus for coding an image for reducing the amount of bit generation. Those are realized by eliminating a perceptual error from a predict error, which is generated in performing a...
5835146 Video data compression  
A video data compression system in which input data representing at least portions of a picture can be encoded by generating motion data representing image motion between the picture and at least...
5831688 Image coded data re-encoding apparatus  
A image coded data re-encoding apparatus for regenerated image coded data for transmission or storing by re-encoding decoded image data according to the present invention comprises an image decoder...
5832121 Method and apparatus for video data compression  
A method and apparatus for encoding a picture advantageously employed for encoding a picture. A plurality of input picture data are stored, and the quantity of the information of the input picture...
5828423 Motion vector detection circuit provided with the picture data memory  
The address generation unit 166 generates a write address for each picture data to be written in the frame memory 169. The memory control unit 165 writes picture data which have the same Y address...
5825424 MPEG system which decompresses and recompresses image data before storing image data in a memory and in accordance with a resolution of a display device  
A television receiver with an MPEG decoder is configurable for full high definition decoding and display, or reduced cost lower definition display. The MPEG decoder (10-33) uses a controllable...
5825419 Coding device and decoding device of digital image signal  
A coding device of a digital image signal coding highly efficiently a digital image signal by using a bidirectional motion compensating prediction and a DCT (digital cosine transform)...
5825418 B-frame processing apparatus including a motion compensation apparatus in the unit of a half pixel for an image decoder  
A B-frame processing apparatus including a motion compensation apparatus in the unit of a half pixel for an image decoder adapted to a video appliance such as HDTV. According to the apparatus,...
5822541 Compressed video data amount reducing device, compressed video data amount reducing system and compressed video data amount reducing method  
According to a data amount reducing device for reducing the data amount of compressed video data in which the compressed video data has a format having a control information portion comprising...
5818536 Motion vector selection using a cost function relating accuracy to bit rate  
A method and apparatus for improved motion vector selection in the motion estimator stage of a video encoder such as an MPEG coder are provided. From a received (re-ordered) image frame sequence, a...
5818969 Intelligent start for motion estimation search  
An intelligent start for a block-matching search is employed. Motion vectors which have been calculated for immediately adjacent blocks in the same image and for corresponding blocks in previous...
5815604 Interactive image manipulation  
In a decoder/display system, a pre-processing stage (10) re-codes intra coded macroblock data in an image to produce an independent representation which observes byte alignment. Macroblock data is...
5815217 Scene-change detector for a moving image composed of a plurality of frames  
A scene-change detector is disclosed which detects a scene-change of a moving image composed of a plurality of frames. In the apparatus, a moving image is encoded based on the correlation between...
5812194 Motion compensated video processing  
A motion compensated video processing method includes encoding a video frame group I 0 -I 7 into one in which one frame I 0 of the group is a basic input frame or `I `frame, and the other frames...
Matches 151 - 200 out of 349 < 1 2 3 4 5 6 7 >