Method and system for scanning video carrier channels of a...

Details Method and system for scanning video carrier channels of a... Method and system for scanning video carrier channels of a...

2006-10-23

2010-11-09

Hsia, Sherrie (Department: 2622)

Television

Receiver circuitry

Tuning

C348S732000, C348S735000

Reexamination Certificate

active

07830458

ABSTRACT:
In a television having a memory storing a plurality of central frequencies of channels, a method for scanning a single video carrier channel includes: (A) entering a channel; (B) providing a frequency correction, which is set to zero in initialization; (C) reading a central frequency of the channel from the memory as a target frequency of the channel; (D) determining if a TV channel exists at the target frequency; recording the target frequency as a frequency of the channel when the TV channel exists, and otherwise executing step (E); (E) adding a predetermined frequency difference to the frequency correction to thereby obtain an updated frequency correction; (F) setting the target frequency to a value of the central frequency plus or minus the updated frequency correction when the updated frequency correction is not greater than a predetermined frequency bound, and executing step (D).

REFERENCES:
patent: 6437837 (2002-08-01), Seo
patent: 7151577 (2006-12-01), Yamamoto et al.
patent: 2005/0054345 (2005-03-01), Lee
patent: 2 232 026 (1990-11-01), None

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