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:
Jun. 30, 1992
Filed:
Nov. 28, 1990
Applicant:
Inventor:
Takao Kurihara, Tokyo, JP;
Assignee:
Clarion Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K / ;
U.S. Cl.
CPC ...
375-1 ; 380 34 ; 333150 ; 333195 ;
Abstract
A bias control device for a narrow band interference suppressing filter using a surface acoustic wave (SAW) element is disclosed, in which bias shift signals corresponding to spectre intensities of channels having central frequencies different from each other outputted from the filter are caught as digital data; magnitudes of the data are compared and at the same time the channel numbers are sorted in the order of the spectre intensities; and control signals for the filter are generated in this way.