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:
Oct. 24, 1978
Filed:
Dec. 16, 1976
Naoyuki Niinomi, Hamamatsu, JP;
Akiyoshi Oya, Hamamatsu, JP;
Nippon Gakki Seizo Kabushiki Kaisha, Hamamatsu, JP;
Abstract
In a touch-responsive circuit adapted for use in an electronic musical instrument provided with a keyboard, and comprising a key depression speed detector including a change-over switch, a capacitor for storing electric charge and a discharging resistor, and a controlling signal generating means including a gating transistor controlled by the key depression speed detector and another capacitor for storing electric charge through said transistor, a voltage-compensating element is connected in the key depression speed detector so as to compensate for the threshold voltage of the gating transistor thereby raising the minimum output voltage of the key depression speed detector and insuring the sound generation for the pianissimo performance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile