Method and apparatus for a programmable bitstream parser for audiovisual and generic decoding systems
    1.
    发明授权
    Method and apparatus for a programmable bitstream parser for audiovisual and generic decoding systems 有权
    用于视听和通用解码系统的可编程比特流解析器的方法和装置

    公开(公告)号:US06512775B1

    公开(公告)日:2003-01-28

    申请号:US09297714

    申请日:1999-07-02

    IPC分类号: G06F1300

    CPC分类号: H04N19/00 H04N19/70

    摘要: A parser (100) for parsing a digital bitstream which includes both data information and programming information, where it is based on the programming information contained in the bitstream, is disclosed. The parser (100) included a buffer (110), a mode selector (200), a control circuit (300), and a data processor (400). The mode selector (200) determines whether one or more bits of the bitstream segment represent a mode selection code, and selects a parser mode in response to the mode selection code. The control circuit (300) receives and stores bits from the buffer when the bitstream parser (100) is in a program mode in order to reprogram the control circuit (300) with newly received program information, and uses the program information to generate one or more parsing signals when the bitstream parser (100) is in data mode. The data processor (400) received bits from the buffer (110) and parsing signals from the command circuit (300) when the bitstream parser is in the data mode, and parses the received bits in accordance with the parsing signals.

    摘要翻译: 公开了一种用于解析包括数据信息和编程信息的数字比特流的解析器(100),其中基于位流中包含的编程信息。 解析器(100)包括缓冲器(110),模式选择器(200),控制电路(300)和数据处理器(400)。 模式选择器(200)确定位流段段的一个或多个位是否表示模式选择代码,并且响应于模式选择代码选择解析器模式。 当比特流解析器(100)处于编程模式时,控制电路(300)接收并存储来自缓冲器的比特,以便用新接收的节目信息重新编程控制电路(300),并使用节目信息来生成一个或 当比特流解析器(100)处于数据模式时,更多的解析信号。 当比特流解析器处于数据模式时,数据处理器(400)从缓冲器(110)接收比特并解码来自命令电路(300)的信号,并根据解析信号解析接收到的比特。