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:
Aug. 07, 1984
Filed:
Dec. 31, 1981
Michael S Chartier, East Brunswick, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A variable gain control system for a digital signal is provided in which the digital signal addresses a digital memory to produce an output signal representative of the addressing signal modified by a transfer characteristic. A control word M is repetitively loaded into an M counter, which counts to a predetermined limit to produce output pulses when the limit is reached. The output pulses increment a data counter. Concurrently, an N control word is repetitively loaded into an N counter, which also counts to a predetermined limit to produce output pulses when that limit is reached. The output pulses of the N counter increment an address counter. When the count of the address counter changes, the current value of the data counter is loaded into a digital memory at the address provided by the address counter. The memory is loaded in this manner to store a data array representative of a signal gain related to the ratio of the N to M.