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. 04, 2003
Filed:
Mar. 27, 2000
Yoshinori Miyajima, Kanagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A signal processing unit outputs a control parameter of a gain control operation-starting electric field strength value in the form of a signal CN in correspondence with data of transfer speed/number of FM level by referring to a memory . Then, this signal processing unit controls setting of an Received Signal Strength Indicator . When an electric field strength of a signal reaches an operation-starting electric field strength value, the Received Signal Strength Indicator (RSSI) changes a voltage of an output GC based upon the control parameter (signal CN ). A gain control circuit changes a gain control amount in response to the output signal GC derived from the Received Signal Strength Indicator . As a consequence, the operation-starting electric field strength value of the AGC operation can be set under optimum condition in correspondence with the sort of signal.