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. 20, 1984
Filed:
Dec. 15, 1981
Tetsuo Yamaguchi, Kawasaki, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
Disclosed is a musical envelope-producing device which may be employed for an electronic watch with a melody performance function. The musical envelope-producing device has a memory which stores musical performance data representing pitches and durations of notes; an address counter; a pitch divider which generates a frequency signal corresponding to the pitch data; a note control circuit which divides a duration corresponding to the duration data into eight time components and generates a predetermined division signal when the duration has elapsed; and an envelope circuit which produces a sound pressure signal which is sequentially attenuated in a stepped manner in response to the division signal and which synthesizes the sound pressure signal and the frequency signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile