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    • 8. 发明授权
    • Video decoder
    • 视频解码器
    • US5576765A
    • 1996-11-19
    • US214929
    • 1994-03-17
    • Dennis P. CheneyVincent C. ConzolaChuck H. NgaiRichard T. PfeifferJames E. Phillips
    • Dennis P. CheneyVincent C. ConzolaChuck H. NgaiRichard T. PfeifferJames E. Phillips
    • H04N7/32G06T9/00H04N7/26H04N7/50H04N7/30
    • H04N19/00H04N19/42H04N19/423H04N19/61H04N19/70
    • A digital signal decoder system for receiving compressed encoded digitized video signals and transmitting decompressed decoded digital video signals includes a FIFO Data Buffer, a RAM having (1) a compressed, encoded Data Buffer and (2) a data portion for storing decompressed digital video buffer data. A Memory Management Unit is provided for managing the RAM. The decoder has a decoder processor that includes a Variable Length Code Decoder for receiving encoded data, a (2,3,3) parallel counter based Inverse Quantizer for dequantizing the decoded data, an Inverse Discrete Cosine Transform Decoder for transforming the dequantized, decoded data into Intrapictures, Predicted Pictures, and Bidirectional predicted Pictures, a Motion Compensator for receiving Intrapictures and other information from the RAM, and error functions, and forming motion compensated predicted pictures therefrom for return to the RAM, a Display Unit to output motion compensated pictures from the RAM, and a reduced instruction set Controller to control the Memory Management Unit, the Variable Length Code Decoder, the Inverse Quantizer, the Inverse Discrete Cosine Transform Decoder, the Motion Compensator, and the Display Unit.
    • 一种用于接收压缩编码数字化视频信号并发送解压缩解码数字视频信号的数字信号解码器系统包括FIFO数据缓冲器,具有(1)压缩编码数据缓冲器的RAM,以及(2)用于存储解压缩数字视频缓冲器 数据。 提供了用于管理RAM的存储器管理单元。 解码器具有解码器处理器,其包括用于接收编码数据的可变长度码解码器,用于对解码数据进行去量化的(2,3,3)并行计数器逆量化器,用于变换去量化的解码数据的逆离散余弦变换解码器 内插图像,预测图像和双向预测图像,用于从RAM接收图像内容和其他信息的运动补偿器和误差函数,以及形成用于返回到RAM的运动补偿预测图像;显示单元,用于从 RAM和精简指令集控制器来控制存储器管理单元,可变长度码解码器,逆量化器,逆离散余弦变换解码器,运动补偿器和显示单元。