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| Number | Title | Issue Date |
| 8139150 | Method and apparatus for encoding and decoding multi-view video signal, and related computer programs A multi-view video signal is encoded. The multi-view video signal includes picture signals corresponding to different viewpoints respectively. One among the viewpoints is designated as a base viewpoint. The base viewpoint corresponds to a picture signal which is enc... | 03/20/2012 |
| 7388996 | Method for filtering digital images, and a filtering device The invention relates to a method for reducing visual artefacts in a digital image, which is coded by blocks (B1, B2, B3, B4) and then decoded. In the method filtering is performed to reduce visual artefacts due to a boundary (R12,... | 06/17/2008 |
| 7362363 | Sensor device with sensor elements and read-out unit which reads partial measurements In a sensor arrangement, a number of sensor elements make measurements and a read-out unit reads measurements from the sensor elements. Images should be recorded in such a way that easily compressible representation of the image content is obtained back at the recor... | 04/22/2008 |
| 7359559 | Video encoding techniques This disclosure is directed to encoding techniques that can be used to improve encoding of digital video data. The techniques can be implemented by an encoder of a digital video device in order to reduce the number of computations and possibly reduce power consumpti... | 04/15/2008 |
| 7356081 | Bidirectionally predicted pictures or video object planes for efficient and flexible video coding A method is provided for decoding a bit stream representing an image that has been encoded. The method includes the steps of: performing an entropy decoding of the bit stream to form a plurality of transform coefficients and a plurality of motion vectors; performing... | 04/08/2008 |
| 7340103 | Adaptive entropy encoding/decoding for screen capture content Adaptive entropy encoding and decoding techniques are described. For example, a screen capture encoder and decoder perform adaptive entropy encoding and decoding of palettized screen capture content in screen capture video. The encoder selects between different entr... | 03/04/2008 |
| 7286714 | Method and device for compressing an image signal based upon differential quantization of data Method of compressing a digital image signal in which a first quantization step set, which is unique for a given segment, is determined so that the number of bits needed to encode the quantized data corresponding to this segment is greater than a target value. This ... | 10/23/2007 |
| 7268903 | Data transfer method, image processing method, data transfer system and image processor The invention relates to the data transfer method, the image processing method, the data transfer system and the image data processor for transferring digital data, especially for transferring image data. The invention has an object to provide the data transfer meth... | 09/11/2007 |
| 7218790 | Adaptive entropy encoding/decoding for screen capture content Adaptive entropy encoding and decoding techniques are described. For example, a screen capture encoder and decoder perform adaptive entropy encoding and decoding of palettized screen capture content in screen capture video. The encoder selects between different entr... | 05/15/2007 |
| 7209560 | Data communications In a data communications system a remote data source outputs data as a series of application data units (ADUs). Each ADU is individually encrypted with a different key. The keys are transmitted (for example using Internet multicasting) via a communications network t... | 04/24/2007 |
| 7171444 | Remote desktop protocol compression system Embodiments of the present invention are directed to a remote desktop communication protocol that includes spatial and temporal compression techniques. Multimedia presentation data is generated at a server from a source. A compression facility modifies the presentat... | 01/30/2007 |
| 7139941 | Method for correcting data using temporally preceding data A method and an arrangement for correcting data which are generated by two asynchronous sources, the data from one source, which are present with a first clock, being conducted via a register which is clocked with a second clock assigned to the other source, the out... | 11/21/2006 |
| 7116283 | Methods and apparatus for improved display of visual data for point of sale terminals Improved techniques for transmission and display of video data are described. A point of sale terminal includes a processor, memory and software executed by the processor to create frames of data and to analyze the frames of data to create differential data defining... | 10/03/2006 |
| 7107212 | Bitstream data reduction coding by applying prediction A data processing apparatus for data processing an audio signal includes an input terminal (1) for receiving the audio signal, a 1-bit A/D converter (4) for A/D converting the audio signal to for a bitstream signal, a prediction unit (10) for ca... | 09/12/2006 |
| 7079695 | Digital image coding system having self-adjusting selection criteria for selecting a transform function In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. C... | 07/18/2006 |
| 7039246 | Video encoding techniques This disclosure is directed to encoding techniques that can be used to improve encoding of digital video data. The techniques can be implemented by an encoder of a digital video device in order to reduce the number of computations and possibly reduce power consumpti... | 05/02/2006 |
| 7020205 | Sending progressive video sequences suitable for MPEG and other data formats In encoding and decoding video signals, a progressive video bitstream is received which has reference frames and non-reference frames, each having an initial temporal reference in accordance with an initial frame sequence structure. The temporal references of the on... | 03/28/2006 |
| 6993072 | Digital signal coding apparatus A digital signal coding apparatus for controlling the coding operation of a coding unit so as to obtain predetermined information amount and for recording into a predetermined recording packet. The apparatus has a control circuit to control the coding operation of t... | 01/31/2006 |
| 6973126 | Video coding apparatus according to a feature of a video picture A variance between sequential video pictures is extracted, and then, a GOP boundary position is decided based on inter-frame variance information. Furthermore, simple motion estimation is carried out with respect to video pictures inside one GOP. If a motion variati... | 12/06/2005 |
| 6970508 | Image coding and decoding using mapping coefficients corresponding to class information of pixel blocks It is possible to produce a decoded image with a high image quality from data of the lowermost hierarchy obtained during hierarchical coding operation. An image of a first hierarchy equal to an original image is successively thinned in thinning units so that an imag... | 11/29/2005 |
| 6965642 | Method and device for compressing and decompressing moving image data and information recording medium A moving image data compressor/decompressor is provided that compresses moving image data with high compressibility and high image quality maintained. The image data extractor 8 extracts image data on a partial area with large motion in a frame. The first dat... | 11/15/2005 |
| 6952432 | INFORMATION TRANSMISSION METHOD AND ENCODING/DECODING APPARATUS AND ENCODING- MULTIPLEXING/DECODING- DEMULTIPLEXING APPARATUS IN INFORMATION TRANSMISSION SYSTEM TO WHICH INFORMATION TRANSMISSION METHOD IS APPLIED In an information transmission method, error robustness is provided for the bit stream itself so that decoding processing can be properly performed even in the event of an error in important information such as header information. A bit stream reconstruction circuit... | 10/04/2005 |
| 6952447 | Signal processing apparatus An image signal processing apparatus for quantizing an inputted moving image signal according to a quantization step so that a code amount of one frame becomes a target code amount, and for variable-length-coding the quantized moving image signal, in which a minimum... | 10/04/2005 |
| 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 |
| 6937657 | Motion video signal encoder and encoding method A motion video signal encoder maximizes image quality without exceeding transmission bandwidth available to carry the encoded motion video signal by comparing encoded frames of the motion video signal to a desired size of frame. If the size of encoded frames differ ... | 08/30/2005 |
| 6934417 | Transcoding scheme for assistance in image transformations This invention proposes to transcode the compressed image, that may be in the JPEG format for example, to an intermediate format that allows pseudo-random access. Such a pseudo-random access would that allow efficient image transformation. By using this format, in m... | 08/23/2005 |
| 6925124 | Unit for and method of motion estimation and image processing apparatus provided with such motion estimation unit The motion estimation unit (100) comprises a block-matcher (102) for calculating a start motion vector (110) by minimizing a predetermined cost function as a matching criterion for the block (116) of pixels with a further block of pixels ... | 08/02/2005 |
| 6922442 | Apparatus and method of encoding moving picture signal Input moving pictures are encoded with motion-compensated prediction. Detected first is an mount of codes generated for each encoded picture of the input moving pictures. Detected next is an average quantization scale factor of quantization scale factors used for qu... | 07/26/2005 |
| 6920177 | Method and apparatus for accomplishing multiple description coding for video A method and apparatus for utilizing temporal prediction and motion compensated prediction to accomplish multiple description video coding is disclosed. An encoder receives a sequence of video frames and divides each frame into non-overlapping macroblocks. Each macr... | 07/19/2005 |
| 6912253 | Method and apparatus for transcoding coded video image data A transcoding apparatus converts first coded data obtained from a plurality of frames forming a video image by means of a coding algorithms including an interframe prediction coding algorithm with motion compensation into second coded data having a different structu... | 06/28/2005 |
| 6912584 | Media coding for loss recovery with remotely predicted data units An improved loss recovery method for coding streaming media classifies each data unit in the media stream as an independent data unit (I unit), a remotely predicted unit (R unit) or a predicted data unit (P unit). Each of these units is organized into independent se... | 06/28/2005 |
| 6907071 | Selective prediction for intra-coding video data block In a method of video data compression a video frame in a sequence of frames is divided into a number of macroblocks, a particular macroblock being adjacent to a number of previously coded macroblocks including both intra-coded and inter-coded macroblocks. The method... | 06/14/2005 |
| 6898328 | Method and apparatus for adaptive pixel estimation under high error rate conditions A method and apparatus for adaptive pixel estimation under high error rate conditions are disclosed. Classes are created, feasible classes are determined, and an optimal filter is applied to perform the pixel estimation. ... | 05/24/2005 |
| 6859498 | Transmitting/received data processing method for inhibiting error propagation in digital image data communications system and recording medium therefor A method of inhibiting error propagation in a bidirectional digital compressed image data communication system is provided. A method of processing transmission data to inhibit error propagation in a digital image data communication system, includes (a) inputting an ... | 02/22/2005 |
| 6831950 | Encoding of two correlated sequences of data A first sequence [SQ1] of data blocks [DB1-*] and a second sequence [SQ2] of data blocks [DB2-*] are encoded. The second sequence [SQ2] of data blocks [DB2-*] is correlated with the first sequence [SQ1] of data blocks... | 12/14/2004 |
| 6816552 | Interpolation of video compression frames A method, system, and computer programs for improving the image quality of one or more bi-directionally predicted intermediate frames in a video image compression system, where each frame comprises a plurality of pixels. In one aspect, the invention includes determi... | 11/09/2004 |
| 6765599 | Image signal transmission apparatus An image-transmitting-side device comprises: a one-phase to two-phase converter circuit for separating parallel image data, which are to be transmitted, into even and odd data; a first parallel-serial converting circuit; a second parallel-serial converting circuit; ... | 07/20/2004 |
| 6704360 | Bidirectionally predicted pictures or video object planes for efficient and flexible video coding A method is provided for decoding a bit stream representing an image that has been encoded The method includes the steps of: performing an entropy decoding of the bit stream to form a plurality of transform coefficents and a plurality of motion vectors; p... | 03/09/2004 |
| 6625215 | Methods and apparatus for context-based inter/intra coding mode selection A technique is provided for use in a video processing system for selecting between an inter-frame coding mode and an intra-frame coding mode when processing a current portion of a video sequence. The technique includes identifying previously reconstructed... | 09/23/2003 |
| 6625220 | Image capture and transmission system An image capture and transmission system includes first and second imaging devices. A timing signal generator produces a timing signal. A common drive circuit operates for driving the first and second imaging devices at equal timings determined by the tim... | 09/23/2003 |
