Error correction mechanism |
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| 申请号 | EP86105484 | 申请日 | 1986-04-21 | 公开(公告)号 | EP0207243A3 | 公开(公告)日 | 1988-10-19 |
| 申请人 | International Business Machines Corporation; | 发明人 | Hong, Ju-Hi John; | ||||
| 摘要 | An error correcting scheme for processing data which is transmitted on a broadcast and/or CATV network and utilizes the IEEE 802.4 three-level duobinary AM/PSK (phase shift keying) coding format. The error correcting scheme utilizes two thresholders. One of the thresholders makes data (1 or 0) decisions while the other thresholder makes non-data or no non-data (non-data) decisions. Pattern matching and windowing are used to detect non-data symbols which are corrected if the non-data symbols deviate from a predetermined pattern. The template used in the pattern matching is determined from the state of a demodulator. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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