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:
Mar. 27, 1984
Filed:
Apr. 03, 1980
Applicant:
Inventor:
Shahid U Qureshi, Natick, MA (US);
Assignee:
Codex Corporation, Mansfield, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03G / ;
U.S. Cl.
CPC ...
375 98 ; 364150 ; 381108 ;
Abstract
Automatic gain control circuitry in a modem receiver, featuring a digitally controlled gain element for imposing on the received modulated carrier signal a gain corresponding to gain control signals g received from a microprocessor, an analog-to-digital converter to provide the microprocessor with digital samples of the received modulated carrier signal, and a gain control in the microprocessor for comparing an estimate of the average level of the samples with a desired level, and generating the control signals g based on the result of the comparison.