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. 28, 1983
Filed:
Mar. 19, 1982
Akihiro Ohshita, Higashihiroshima, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A digital control type volume control circuit is disclosed herein which includes a multivibrator, an UP key, a DOWN key, a pair of binary UP/DOWN counters, a 4-to-16 line decoder, an encoder and an attenuator. The multivibrator is connected to the UP and DOWN keys to furnish pulses to the counter via an actuated one of the UP and DOWN keys. The counter counts the number of the pulses via the UP and DOWN key, with the counter being indicative of the length of actuation of the UP or DOWN key. The encoder responsive to the count of the counter output count provides an output for the attenuator having a plurality of resistors of different resistances for determination as to the amount of attenuation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile