Apparatus providing a clock signal for a digital television rece

Details Apparatus providing a clock signal for a digital television rece Apparatus providing a clock signal for a digital television rece

1991-07-25

1992-12-29

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 11, 358142, 358188, H04N 544

Patent

active

051756269

ABSTRACT:
A high definition television receiver including digital signal processing circuits receives a high definition television signal containing narrowband high priority information from which a system clock is derived, and low priority wideband information. After a channel change, a clock signal developed from narrowband information associated with the previously tuned channel is used as the receiver clock until a clock signal with a desired phase characteristic is developed from the narrowband information of the newly tuned channel.

REFERENCES:
patent: 4535352 (1985-08-01), Haskell
patent: 4622578 (1986-11-01), Rzeszewski
patent: 4633293 (1986-12-01), Powers
patent: 4980767 (1990-12-01), Chao
Semicompatible High Definition Television Using Field Differential Signals, by Barry G. Haskell, IEEE Transactions on Communications, vol. COM-34, No. 10, Oct. 1986 pp. 1030 to 1037.

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