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    • 6. 发明申请
    • PARALLEL DECODING OF INTERLEAVED DATA STREAMS WITHIN AN MPEG DECODER
    • 在MPEG解码器中并行解码交互数据流
    • WO1998027741A1
    • 1998-06-25
    • PCT/US1997022855
    • 1997-12-15
    • THOMSON CONSUMER ELECTRONICS, INC.KRANAWETTER, Greg, AlanSCHULTZ, Mark, Alan
    • THOMSON CONSUMER ELECTRONICS, INC.
    • H04N07/50
    • H03M7/40G06T9/007H04N5/4401H04N5/46H04N11/044H04N19/13H04N19/186H04N19/40H04N19/42H04N19/423H04N19/428H04N19/436H04N19/439H04N19/59H04N19/60H04N19/61H04N19/895H04N19/90H04N19/91H04N21/4305
    • An MPEG decoder (14, 18, 22) in a high definition television receiver decodes and decompresses MPEG coded data to produce decompressed image pixel blocks, and includes a motion compensation network (90...) coupled to a frame memory (60) to produce finally decoded pixel data for display. The decompressed MPEG data is recompressed by plural parallel recompressors (40, 42) prior to storage in frame memory. Each recompressor receives a datastream of interleaved pixel data (24, 27, Fig. 5), and predicts and compresses interleaved pixel values (a, c) during each clock cycle, respectively (Fig. 20, 27). One of the recompressors (42) is de-energized in a reduced data processing mode when pixel data is subsampled (36, 38) prior to recompression. Subsampled data is re-ordered (43) prior to recompression. Multiple parallel decompressors (80, 82, 84) coupled to the frame memory provide pixel data to the motion processing network. A control unit (356, 360, 364, Fig. 23) insures an uninterrupted interleaved data flow to the decompressors by repeating last valid data when source data is interrupted.
    • 高分辨率电视接收机中的MPEG解码器(14,18,22)对MPEG编码数据进行解码和解压缩以产生解压缩的图像像素块,并且包括耦合到帧存储器(60)的运动补偿网络(90 ...) 产生最终解码的像素数据进行显示。 解压缩的MPEG数据在存储在帧存储器中之前由多个并行的再压缩器(40,42)重新压缩。 每个重新压缩器接收交错像素数据的数据流(图27,24,27),并分别在每个时钟周期期间预测和压缩交错像素值(a,c)(图20,27)。 当在再压缩之前对像素数据进行二次采样(36,38)时,其中一个再压缩器(42)在减小的数据处理模式中被断电。 在重新压缩前重新排序(43)采样数据。 耦合到帧存储器的多个并行解压缩器(80,82,84)向运动处理网络提供像素数据。 当源数据被中断时,控制单元(356,360,364,图23)通过重复最后的有效数据来确保不间断的交错数据流到解压缩器。
    • 7. 发明申请
    • PARALLEL DECOMPRESSORS FOR RECOMPRESSED PIXEL DATA WITHIN AN MPEG DECODER
    • 用于MPEG解码器中的恢复像素数据的并行解码器
    • WO1998027740A1
    • 1998-06-25
    • PCT/US1997022853
    • 1997-12-15
    • THOMSON CONSUMER ELECTRONICS, INC.KRANAWETTER, Greg, AlanSCHULTZ, Mark, Alan
    • THOMSON CONSUMER ELECTRONICS, INC.
    • H04N07/50
    • H03M7/40G06T9/007H04N5/4401H04N5/46H04N11/044H04N19/13H04N19/186H04N19/40H04N19/42H04N19/423H04N19/428H04N19/436H04N19/439H04N19/59H04N19/60H04N19/61H04N19/895H04N19/90H04N19/91H04N21/4305
    • An MPEG decoder (14, 18, 22) in a high definition television receiver decodes and decompresses MPEG coded data to produce decompressed image pixel blocks, and includes a motion compensation network (90...) coupled to a frame memory (60) to produce finally decoded pixel data for display. The decompressed MPEG data is recompressed by plural parallel recompressors (40, 42) prior to storage in frame memory. Each recompressor receives a datastream of interleaved pixel data (24, 27; Fig. 5), and predicts and compresses interleaved pixel values (a, c) during each clock cycle, respectively (Fig. 20, 27). One of the recompressors (42) is de-energized in a reduced data processing mode when pixel data is subsampled (36, 38) prior to recompression. Subsampled data is re-ordered (43) prior to recompression. Multiple parallel decompressors (80, 82, 84) coupled to the frame memory provide pixel data to the motion processing network. A control unit (356, 360, 364, Fig. 23) insures an uninterrupted interleaved data flow to the decompressors by repeating last valid data when source data is interrupted.
    • 高分辨率电视接收机中的MPEG解码器(14,18,22)对MPEG编码数据进行解码和解压缩以产生解压缩的图像像素块,并且包括耦合到帧存储器(60)的运动补偿网络(90 ...) 产生最终解码的像素数据进行显示。 解压缩的MPEG数据在存储在帧存储器中之前由多个并行的再压缩器(40,42)重新压缩。 每个重新压缩器接收交织像素数据的数据流(24,27;图5),并且分别在每个时钟周期期间预测和压缩交织像素值(a,c)(图20,27)。 当在再压缩之前对像素数据进行二次采样(36,38)时,其中一个再压缩器(42)在减小的数据处理模式中被断电。 在重新压缩前重新排序(43)采样数据。 耦合到帧存储器的多个并行解压缩器(80,82,84)向运动处理网络提供像素数据。 当源数据被中断时,控制单元(356,360,364,图23)通过重复最后的有效数据来确保不间断的交错数据流到解压缩器。
    • 9. 发明申请
    • MOTION VECTOR QUANTIZING SELECTION SYSTEM
    • 运动矢量量化选择系统
    • WO1997017810A1
    • 1997-05-15
    • PCT/US1996017946
    • 1996-11-08
    • UTAH STATE UNIVERSITY FOUNDATION
    • UTAH STATE UNIVERSITY FOUNDATIONISRAELSEN, Paul, D.
    • H04N07/50
    • H04N19/40H04N7/147H04N19/107H04N19/146H04N19/147H04N19/152H04N19/172H04N19/176H04N19/19H04N19/30
    • A video telephone system includes a camera (14) that produces video images. Processing circuitry (88, 100) performs vector quantization on the video images to represent the video images with a relatively small amount of data for transmission to a remote location or memory (fig. 7). The video images are represented by frames which may be further divided into blocks (54). A current block is the block that is being considered at a given time. A conditional previous block occupies the position in a previous frame that the current block occupies in the current frame. A motion previous block is a block of the previous frame (42A) containing data like that of the current block. To further reduce the amount of data needed to represent the video images, the processing circuitry (88, 100) determines what, if any, quantization is needed with respect to the current block. The processing circuitry (88, 100) may perform either vector quantization on the current block, or vector quantization on a residual (68) between the current block and motion previous block, or pass bits indicating that the vector quantization of the conditional previous block is adequate. The decision (96) which occurs depends on various distances related to the current block, the motion previous block, and the conditional previous block. The invention has application for images other than those used in video telephone systems.
    • 视频电话系统包括产生视频图像的相机(14)。 处理电路(88,100)对视频图像进行矢量量化以用相对少量的数据表示视频图像,以传输到远程位置或存储器(图7)。 视频图像由可以被进一步划分为块(54)的帧表示。 当前块是在给定时间被考虑的块。 有条件的先前块占据当前块在当前帧中占据的先前帧中的位置。 运动先前块是包含像当前块的数据的先前帧(42A)的块。 为了进一步减少表示视频图像所需的数据量,处理电路(88,100)确定相对于当前块需要量化(如果有的话)。 处理电路(88,100)可以对当前块执行矢量量化,或对当前块和运动先前块之间的残差(68)进行矢量量化,或者通过位,指示条件先前块的矢量量化是 充足。 发生的决定(96)取决于与当前块,运动先前块和条件先前块相关的各种距离。 本发明适用于视频电话系统以外的图像。
    • 10. 发明申请
    • METHOD AND DEVICE FOR DECODING CODED DIGITAL VIDEO SIGNALS
    • 用于解码编码数字视频信号的方法和装置
    • WO1997011562A1
    • 1997-03-27
    • PCT/IB1996000959
    • 1996-09-19
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABFRENCKEN, Peter, Hubertus
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN AB
    • H04N07/50
    • H04N19/427H04N19/423H04N19/61
    • Conventional MPEG decoders require about 16 Mbits of external memory to contain the input buffer, the two usual reference frames, and the B-information. As proposed earlier, about 2,8 Mbit in memory capacity can be saved by omitting the storage of B-information. According to the invention, a further exchange between memory capacity and internal processing, by MPEG decoding with only one reference frame stored in memory, is proposed: all B and P information required for the reconstruction of display information which cannot directly be retrieved from memory is decoded instantaneously. Three decoding sub-steps are provided in the proposed method and device: a first one for the macroblock parameters, a second one for the picture elements according to a decoding-on-the-fly principle, a third one for the updating of the earlier reference frame after the decoding operation of the later reference frame.
    • 传统的MPEG解码器需要大约16Mb的外部存储器来包含输入缓冲器,两个通常的参考帧和B信息。 如前所述,通过省略B信息的存储,可以节省大约2MB的内存容量。 根据本发明,提出了通过仅存储在存储器中的一个参考帧的MPEG解码的存储器容量和内部处理之间的进一步交换:用于重建不能直接从存储器检索的显示信息所需的所有B和P信息是 瞬间解码 在所提出的方法和装置中提供三个解码子步骤:用于宏块参数的第一个解码子步骤,根据原始译码原理的第二个用于图像元素的第三个解码子步骤,用于更新早期 参考帧后解码后的参考帧。