发明名称 |
Digital data slicer circuit for digital teletext signals |
摘要 |
A digital data slicer circuit causes the slicing level to track a teletext signal in optimum fashion even if the teletext signal has many successive zero crossings. The digital data slicer circuit substantially prevents any lock-in in either of two other, stable states. This is achieved essentially by applying a zero signal via two changeover switches to an accumulator and a sign inverter when many successive zero crossings are detected by a logic circuit that controls the changeover switches.
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申请公布号 |
US4858007(A) |
申请公布日期 |
1989.08.15 |
申请号 |
US19880240310 |
申请日期 |
1988.09.06 |
申请人 |
DEUTSCHE ITT INDUSTRIES GMBH |
发明人 |
SCHWEER, REINER;JUENKE, MANFRED;SIEBEN, ULRICH K. |
分类号 |
H04N7/035;H04N7/088 |
主分类号 |
H04N7/035 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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