The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 28, 2003

Filed:

May. 21, 1999
Applicant:
Inventor:

Shuichi Ninomiya, Hirakata, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 9/00 ; H03L 2/706 ; H03L 2/714 ; H03L 2/722 ;
U.S. Cl.
CPC ...
H03K 9/00 ; H03L 2/706 ; H03L 2/714 ; H03L 2/722 ;
Abstract

A receive control portion activates each of VCOs, and then sets a reference dividing ratio N in the programmable divider. With each of the VCOs active, the receive control portion determines whether the PLL circuit locks or not based on a signal inputted during this time. Based on the determination result, the receive control portion then creates pattern data in a first table. A second table is previously stored in memory. Written into the second table is an optimal VCO for each pattern. The receive control portion determines the optimal VCO corresponding to the created pattern data referring to the second table. This allows the receiver to optimally select a VCO at high speed.


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