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| Number | Title | Issue Date |
| 6834081 | Coding apparatus and method for orientation interpolator node An encoding apparatus and method for an orientation interpolator node are provided. The encoding apparatus for an orientation interpolator node, which provides information on the rotation of an object in a 3-dimensional space, includes a field data input unit for ex... | 12/21/2004 |
| 6834080 | Video encoding method and video encoding apparatus An video encoding method and a video encoding apparatus wherein an input video signal is divided into a plurality of temporally continuous scenes each including at least one frame, statistical feature amounts are calculated for each of the scenes, encoded parameters... | 12/21/2004 |
| 6831946 | Device and method for coding image Device and method for coding an image for compressing a digital video signal, including the steps of (1) transforming a spatial domain of the video signal into frequency domain, and dividing the frequency domain into subband regions having relatively much meaningful... | 12/14/2004 |
| 6826229 | Device and method for coding video information A video encoder includes a signal processing unit for producing block information such as quantization scale and quantized DCT coefficients and a coding unit for variable-length coding the quantized block information. The amount of generated coded data per unit time... | 11/30/2004 |
| 6826228 | Conditional masking for video encoder This method and apparatus described herein imposes masking factors to the determined quantization step sizes of macroblocks of a video sequence such that encoding efficiency is increased. A conditional masking method can be used to take advantage of the fact that P-... | 11/30/2004 |
| 6823014 | Video decoder with down conversion function and method for decoding video signal A video decoder decodes a video signal based on a down conversion function. The video decoder includes a variable length decoder which analyzes a received compressed video stream and extracts motion signals. The analyzed bitstream is converted into a macro block thr... | 11/23/2004 |
| 6823008 | Video bitrate control method and device for digital video recording A video bitrate control method for a video coding system, the coding system generating coded video frames to be stored in a storage device and originating from a sequence of input frames, the method comprising at least a quantization step for applying to the input f... | 11/23/2004 |
| 6819712 | Video encoding apparatus and video encoding method A picture coding apparatus has a signal processor 10 for generating macro-block information by calculating and quantizing the DCTs of a picture signal of a given unit are calculated for each macro-block MB. This information is input to a syntax generator 1... | 11/16/2004 |
| 6816617 | Motion vector searcher and motion vector search method as well as moving picture coding apparatus The invention provides a motion vector searcher which includes an inter-block difference arithmetic operation section for calculating and outputting difference amounts between an original image MB and a plurality of search MBs, an additional amount arithmetic operat... | 11/09/2004 |
| 6812865 | Data compression A data compression apparatus includes a source detection arrangement for detecting whether or not the input data is source data that has not undergone a previous compression/decompression cycle; a data quantity generator, responsive to the source detection arrangeme... | 11/02/2004 |
| 6810080 | Method and apparatus for decoding video data A video decoder for decoding video pictures encoded according to the MPEG-2 standard, having reduced memory requirements, including a memory for storing means for storing a plurality of anchor frames, the decoder employing such anchor frames to generate B-frames, an... | 10/26/2004 |
| 6810086 | System and method of filtering noise A system and method of removing noise in a bitstream is disclosed. The system and method are most applicable to removing noise in a bitstream wherein the bitstream is encoded after being segmented into portions based on predefined classifications or models. Based on... | 10/26/2004 |
| 6804295 | Conversion of video and audio to a streaming slide show A technique for conversion of video and audio to a streaming slide show. A video stored on a data store connected to a computer is processed. Initially, a motion-based video comprised of a series of images is received. One or more images are selected from the motion... | 10/12/2004 |
| 6804294 | Method and apparatus for video frame selection for improved coding quality at low bit-rates A method and apparatus for advantageously selecting video frames to be coded in order to improve the coding quality of a low bit-rate coder. In particular, temporal sub-sampling (i.e., selecting a set of frames to be coded from the complete incoming sequence of fram... | 10/12/2004 |
| 6804401 | Method for compressing digital documents with control of image quality subject to multiple compression rate constraints A method for digital image compression of a raster image is disclosed which uses different compression methods for selected parts of the image and which dynamically adjusts compression and segmentation parameters to control tradeoff of image quality and compression.... | 10/12/2004 |
| 6804299 | Methods and systems for reducing requantization-originated generational error in predictive video streams using motion compensation Adaptive compensation for requantization. A reference picture is decoded. Another copy of the reference picture is then requantized and then decoded. Next, an error picture is calculated and stored. The error picture represents the difference between the reference p... | 10/12/2004 |
| 6804302 | Multimedia information coding apparatus, coding method of multimedia information, and recording media storing data coded by the same method A multimedia title including sources of plural data-types such as a motion picture, still picture and text data, presentation methods of respective sources, and the data-types is edited in every frame, so that a video signal is created. Based on a scenario, the vide... | 10/12/2004 |
| 6804303 | Apparatus and method for increasing definition of digital television An apparatus and method for improving picture quality of a digital television is disclosed in which a picture image motion adaptive interpolation process is used when an interlaced picture is converted to a progressive picture, thereby providing optimal picture qual... | 10/12/2004 |
| 6798835 | Apparatus and method of switching moving-picture bitstream Moving-picture bitstreams are switched at a predetermined switching timing to form a successive moving-picture bitstream. Each bitstream carries first pictures to be used as reference pictures for inter-picture prediction and second pictures other than the first pic... | 09/28/2004 |
| 6778533 | Method and system for accessing packetized elementary stream data In accordance with a specific aspect of the present invention, a compressed video stream, such as an MPEG-2 video stream, is received by a transport demultiplexor, synchronized, parsed into separate packet types, and written to buffer locations external the demultip... | 08/17/2004 |
| 6760487 | Estimated spectrum adaptive postfilter and the iterative prepost filtering algirighms The invention presents The Estimated Spectrum Adaptive Postfilter (ESAP) and the Iterative Prepost Filter (IPF) algorithms. These algorithms model a number of image-adaptive post-filtering and pre-post filtering methods. They are designed to minimize Discrete Cosine... | 07/06/2004 |
| 6760478 | Method and apparatus for performing two pass quality video compression through pipelining and buffer management An apparatus and method for performing two-pass real time video compression is provided. Tactical decisions such as encoding and quantization values are determined in software, whereas functional execution steps are performed in hardware. By appropriately apportioni... | 07/06/2004 |
| 6741648 | Apparatus, and associated method, for selecting an encoding rate by which to encode video frames of a video sequence Apparatus, and an associated method, for selecting the encoding bit rate at which an encoder encodes selected video frames of a sequence of video frames at a video sending device. Selection is made to provide a constant-consistency quality level and constant frame r... | 05/25/2004 |
| 6721359 | Method and apparatus for motion compensated video coding Apparatus and methods are provided for encoding video data in a manner which significantly reduces the computation performed by the video encoder and the video decoder without suffering any degradation in the perceived quality of the compressed video data. In partic... | 04/13/2004 |
| 6704358 | Method and apparatus for resizing image information A method and apparatus for adapting scaled pixel blocks such that the resolution, or grid size, of associated motion vector information is substantially the same. Also disclosed are various techniques for producing and processing the scaled pixel blocks s... | 03/09/2004 |
| 6701019 | Determining visually noticeable differences between two images The present invention relates to a method and apparatus for determining visually noticeable differences between two input images. A first contrast image is generated from the first input image and a second contrast image is generated from the second input... | 03/02/2004 |
| 6700931 | Method, system and apparatus for initiating and maintaining synchronization of a pulse position modulation (PPM) decoder with a received PPM signal A radio frequency identification (RFID) tag device having a pulse position modulation (PPM) decoder circuit which calculates a relative frequency relationship between an internal clock-oscillator of the RFID tag device and an external PPM source such as a... | 03/02/2004 |
| 6697428 | Transcoding method and device The invention relates to a transcoding method and device for converting input coded signals previously quantized with a first quantization scale Q1 into output coded signals quantized with a second quantization scale Q2. The transcoding device comprises a... | 02/24/2004 |
| 6687409 | Decoding apparatus using tool information for constructing a decoding algorithm A coding and decoding apparatus is constructed so that the coding side transmits coded data together with identifying information for identifying the device of decoding the coded data, and the decoding side is capable of storing a number of decoding schem... | 02/03/2004 |
| 6678322 | Video data coding device, video data coding method, video data transmitting device, and video data recording medium A coding preprocessing section supplies, to a CPU 6, a statistic quantity (index data) indicating characteristics of source video data to be coded. The CPU 6 calculates a coding difficulty indicating difficulty in coding the video data, and calculates a t... | 01/13/2004 |
| 6674477 | Method and apparatus for processing a data series including processing priority data A reception control section 11 for receiving the information including data and its transmission format information from a memory or communication channel, a separating section 12 for analyzing and separating received information, a transmitting section 1... | 01/06/2004 |
| 6671412 | Motion image coding apparatus for performing hierarchical coding An image coding apparatus inputs pixel data of a part image of high resolution. An upper layer coding portion (101), a second shape data generating portion (102), and a second shape data coding portion (103) perform coding of shape data and pixel data in ... | 12/30/2003 |
| 6662322 | Systems, methods, and computer program products for controlling the error rate in a communication device by adjusting the distance between signal constellation points Error rate control systems, methods, and computer program products request a data rate slow-down based on the status of the error rate. A linear penalty is generated if a data rate slow-down is requested, which is then used to determine a minimum distance... | 12/09/2003 |
| 6654417 | One-pass variable bit rate moving pictures encoding A method and apparatus for encoding digital video utilizing a single pass variable bit rate encoding procedure. An encoding quality is set and the bit rate for encoding blocks or frames in the sequence of moving pictures is determined to achieve the selec... | 11/25/2003 |
| 6654418 | Non-linear quantizer for video coding A quantizer and dequantizer for use in a video coding system that applies non linear, piece-wise linear scaling functions to video information signals based on a value of a variable quantization parameter. The quantizer and dequantizer apply different non... | 11/25/2003 |
| 6654416 | Device and process for regulating bit rate in system for the statistical multiplexing of image streams coded according to MPEG2 coding A device for regulating bit rate in a system for statistically multiplexing several streams of MPEG 2 coded images is disclosed. The statistical multiplexing system includes a device (1) for allocating bit rate using the complexity calculated by a bit rat... | 11/25/2003 |
| 6647060 | Video compression device and video compression method A frame receiving unit calculates the number of a frame to be compressed and gets an image data from the frame. A frame checking unit checks the type of the frame and allocates required code memory. When the frame is an I frame, a frequency conversion uni... | 11/11/2003 |
| 6636637 | Method and arrangement for coding and decoding a digitized image The method and apparatus have a shape-adapted transformation coding is in which in the intra-image coding and the inter-image coding different shape-adapted transformation codings are carried out. A first shape-adapted transformation coding takes place in... | 10/21/2003 |
| 6633608 | Method and apparatus for adapting memory resource utilization in an information stream decoder A method and apparatus for reducing memory and memory bandwidth requirements in an MPEG-like decoder by preferentially allocating, in a first mode of operation, memory to an anchor frame storage functions and re-allocating, in a second mode of operation, ... | 10/14/2003 |
| 6633609 | Method and apparatus for bit rate control in a digital video environment for arbitrary bandwidth According to an embodiment of the present invention, a method is presented for controlling a video image compression system. In this method a video frame of raw video image data is compressed using a processor. Then it is determined whether the processor ... | 10/14/2003 |
