发明授权
- 专利标题: METHOD AND APPARATUS FOR DECODING MANCHESTER ENCODED DATA
- 专利标题(中): 方法和设备编码数据进行解码MANCHESTER
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申请号: EP92920413.9申请日: 1992-09-30
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公开(公告)号: EP0613602B1公开(公告)日: 1996-10-23
- 发明人: WIGHT, Mark, Stephen , DODA, Mervin
- 申请人: NORTHERN TELECOM LIMITED
- 申请人地址: World Trade Center of Montreal, 380 St. Antoine Street West 8th Floor Montreal, Quebec H2Y 3Y4 CA
- 专利权人: NORTHERN TELECOM LIMITED
- 当前专利权人: NORTHERN TELECOM LIMITED
- 当前专利权人地址: World Trade Center of Montreal, 380 St. Antoine Street West 8th Floor Montreal, Quebec H2Y 3Y4 CA
- 代理机构: Ryan, John Peter William
- 优先权: US795446 19911121
- 国际公布: WO9310610 19930527
- 主分类号: H04L25/49
- IPC分类号: H04L25/49 ; H04L7/033
摘要:
A receiver for Manchester encoded data includes an autocalibration feedback loop that generates a timing pulse used to recover the clock and data signals. The autocalibration feedback loop includes a first digital delay line (12) sampled by a plurality of D-type flip-flops (52) in dependence upon the recovered clock signal (RCLK) to produce a control word CNT(O:N) indicative of the number of digital delay elements (50) required to approximate one-half of the recovered clock period. A second digital delay line (14), connectivity mapped (58) to the first, provides three-eights of a clock period delay. The delayed clock signal (DCLK) is derived from the bit stream by sampling in dependence upon the timing pulse (TPLS). The decoded data signal (RDATA) is derived from the bit stream by multiplexing the sampling input in dependence upon the timing pulse and the decoded data signal.
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