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    • 7. 发明申请
    • METHODS AND APPARATUS FOR IDENTIFYING A DIGITAL AUDIO SIGNAL
    • 识别数字音频信号的方法和装置
    • US20100198380A1
    • 2010-08-05
    • US12760712
    • 2010-04-15
    • John C. PeifferMichael A. HicksDavid H. WrightPaul M. MearsVenugopal SrinivasanDaozheng LuPaul C. Kempter
    • John C. PeifferMichael A. HicksDavid H. WrightPaul M. MearsVenugopal SrinivasanDaozheng LuPaul C. Kempter
    • G06F17/00
    • H04H60/59H04H60/37H04H60/58H04H2201/90H04N7/17318H04N21/235H04N21/4331H04N21/4394H04N21/44213H04N21/812H04N21/8352
    • Methods and apparatus for identifying a digital audio signal are described. An example apparatus for identifying a digital audio signal includes an input to receive the digital audio signal, which includes data from a broadcast or a stored digital program signal. The example apparatus also includes a detector to receive the digital audio signal from the input and determine whether the received digital audio signal is uncompressed as received at the input; a decoder to receive the digital audio signal from the detector when the digital audio signal is compressed as received at the input and identify any first program-identifying code in an auxiliary field of the compressed digital audio signal; and a code reader to receive the digital audio signal from the detector when the digital audio signal is uncompressed as received at the input and receive the digital audio signal from a decompressor when the digital audio signal is compressed as received at the input. Additionally, the code reader is to identify any second program-identifying code in a decompressed or uncompressed portion of the digital audio signal when the first program-identifying code is not identified in the auxiliary field or when the digital audio signal is uncompressed as received at the input.
    • 描述用于识别数字音频信号的方法和装置。 用于识别数字音频信号的示例性装置包括用于接收包括来自广播或存储的数字节目信号的数据的数字音频信号的输入。 该示例设备还包括一个检测器,用于从输入端接收数字音频信号,并确定接收到的数字音频信号是否在输入端被接收为未压缩; 解码器,当数字音频信号被压缩成在输入处接收时,从检测器接收数字音频信号,并识别压缩数字音频信号的辅助字段中的任何第一节目识别码; 以及代码阅读器,当数字音频信号在输入端被接收时未被压缩时从检测器接收数字音频信号,并且当数字音频信号在输入端被接收时从解压缩器接收数字音频信号。 另外,当第一节目识别码在辅助字段中未识别时或当数字音频信号未被压缩为如在第一节目识别码处被接收时,代码阅读器将识别数字音频信号的解压缩或未压缩部分中的任何第二节目识别码 输入。