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    • 1. 发明申请
    • TWO-WIRE DIGITAL AUDIO INTERFACE
    • 双线数字音频接口
    • WO2012170243A1
    • 2012-12-13
    • PCT/US2012/039928
    • 2012-05-30
    • ANALOG DEVICE, INC.FU, JiePAN, YangWU, YongyiNGUYEN, Khiem, Quang
    • FU, JiePAN, YangWU, YongyiNGUYEN, Khiem, Quang
    • G06F1/12
    • H04H60/04
    • A digital audio interface may include two signal inputs to transmit audio data. A first signal line may carry digital serial audio data. The second signal line may carry a word clock signal to differentiate the serial audio data transmitted over the first signal line. In the case of stereo audio data, the word clock signal may correspond to a left-right clock signal and may differentiate audio data intended for a right channel from that intended for a left channel. The audio data may also be differentiated differently depending on the configuration, such as in the case that the transmitted audio data include audio for more than two channels. The word clock signal may be scaled to regenerate a bit clock signal used to encode the serial audio data over the first signal line. The encoding bit clock signal need not be transmitted.
    • 数字音频接口可以包括用于传输音频数据的两个信号输入。 第一条信号线可以携带数字串行音频数据。 第二信号线可以携带字时钟信号以区分通过第一信号线发送的串行音频数据。 在立体声音频数据的情况下,字时钟信号可以对应于左右时钟信号,并且可以区分用于右声道的音频数据与用于左声道的音频数据。 音频数据也可以根据配置而不同地进行区分,诸如在所发送的音频数据包括多于两个声道的音频的情况下。 字时钟信号可以被缩放以再生用于对第一信号线上的串行音频数据进行编码的位时钟信号。 编码位时钟信号不需要传输。