Integrated single and dual television tuner having improved...

Details Integrated single and dual television tuner having improved... Integrated single and dual television tuner having improved...

2005-05-03

2005-05-03

Hsia, Sherrie (Department: 2614)

Television

Receiver circuitry

Tuning

C348S725000, C348S735000

Reexamination Certificate

active

06888580

ABSTRACT:
Improved television tuning circuits are disclosed. An example tuning circuit includes a fraction-N frequency synthesizer facilitating fine tuning. This tuning circuit may be formed using relatively few independent oscillators. The tuning circuit lends itself to the formation of an tuning circuit on an integrated circuit substrate. As well, this tuning circuit may be used to form a dual tuner tuning circuit integrated on a single integrated circuit substrate.

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Best, Roland E., “Phase Locked Loops; Design, Simulation, and Applications 4thEdition”, McGraw-Hill, New York, 1999, p 146-147 & 139-140.
Wolaver, Dan H., “Phase-Locked Loop Circtui Design”, Prentice Hall, New Jersey, 1991, p 250-252.

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