发明授权
US5297181A Method and apparatus for providing a digital audio interface protocol
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用于提供数字音频接口协议的方法和装置
- 专利标题: Method and apparatus for providing a digital audio interface protocol
- 专利标题(中): 用于提供数字音频接口协议的方法和装置
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申请号: US822469申请日: 1992-01-17
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公开(公告)号: US5297181A公开(公告)日: 1994-03-22
- 发明人: Keith Barr , Alan Zak , Marcus Ryle , David Brown , Carl Lafky
- 申请人: Keith Barr , Alan Zak , Marcus Ryle , David Brown , Carl Lafky
- 申请人地址: CA Los Angeles
- 专利权人: Alesis
- 当前专利权人: Alesis
- 当前专利权人地址: CA Los Angeles
- 主分类号: G11B20/10
- IPC分类号: G11B20/10 ; H03L7/06 ; H04L7/033 ; H04L7/04 ; H04L7/10 ; H04L25/40 ; H03D3/24
摘要:
A digital audio interface protocol carries multiple channels of digital audio information serially between a transmitting digital audio tape recorder and a plurality of receiving recording units. Using a three stage process, the circuitry of the present invention allows the receiving VCO's to "lock on" to the sampling rate of the serial digital data stream without any explicit sampling information. In a first stage, the VCO frequency is adjusted until a sync pattern is properly received. In a second stage, the VCO frequency is adjusted to oscillate a preselected number of times between sync pattern occurrences. In a third stage, the VCO phase is adjusted to match the phase of the serial data stream.
公开/授权文献
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