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:
May. 17, 1994
Filed:
Aug. 01, 1991
Applicant:
Inventor:
Tadashi Kurita, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455-32 ; 455148 ; 4551542 ; 4551551 ; 4551841 ; 4552263 ; 348729 ; 348731 ;
Abstract
A receiver apparatus detects a received level from an AGC voltage relative to a received signal. For measuring the received level (a level outputted from an antenna), noise levels at predetermined frequencies higher and lower than the broadcast frequency band and a received signal level upon receiving a broadcast at an arbitrary channel are measured, and a received level corresponding to C/N at the received channel is calculated from the three measured values, thereby eliminating received level calculation differences among channels occurring when the received level is calculated on the basis of the AGC voltage.