Digital television transmitting system having data and clock recovering circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 14, 2002
Grant Date -
N/A
app pub date -
Jan 20, 1999
filing date -
Jan 20, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital television transmitting system is presented having a recovery circuit for recovering non-return to zero (NRZ) data pulses and transport clock pulses from a biphase-mark serial data pulse stream and wherein the recovered NRZ data pulses and the recovered transport clock pulses are applied to modulation and amplifying circuits for broadcasting by an antenna. The recovery circuit includes a first circuit for receiving the biphase-mark serial pulse stream and providing therefrom a train of first clock pulses wherein the rising edge of each the biphase-mark pulse corresponds with a rising edge of one of the first clock pulses. A second circuit receives the biphase-mark serial data pulses and the first clock pulses for providing therefrom a train of de-serialized data pulses each having a rising edge corresponding with a rising edge of one of the first clock pulses. A third circuit receives the de-serialized data pulses and the first clock pulses and converts the de-serialized data pulses into recovered NRZ data pulses.
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- H04N Class
- 1.86 % this patent is cited more than
- 23 Age