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.
Patent No.:
Date of Patent:
Nov. 24, 1998
Filed:
Sep. 24, 1996
Keiji Kobayashi, Gunma-ken, JP;
Yasunari Noguchi, Gunma-ken, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A storing circuit for storing control data for a varactor diode, a frequency divided data generating circuit for generating frequency divided data to set the local oscillating frequency of a local oscillating circuit, a determining circuit for computing a receiving frequency from the frequency divided data and determining whether or not the receiving frequency is within a designated frequency range and an arithmetic circuit for executing computation in compliance with data indicating the receiving frequency and control data stored in the storing circuit are provided, and the capacitance of the variable capacitance element is controlled by analog-conversion of an output signal from the arithmetic circuit, thus tracking errors caused by variation in tuning elements are prevented and an RF tuning circuit control interval is reduced.