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:
Dec. 27, 1994
Filed:
Apr. 06, 1993
Taichi Kosugi, Shizuoka, JP;
Yutaka Washiyama, Shizuoka, JP;
Abstract
A key touch detector, for an electronic musical instrument, that detects key touch states, comprises: a first switch to be closed at a first key displacement position disposed along the line of travel of a depressed key; a second switch to be closed at a second key displacement position disposed along the line of travel of the depressed key; a key depression detector for detecting the closure of the first switch and the closure of the second switch; a touch data computer for computing touch data for the depressed key during a period that begins following the closure of the first switch and ends with the closure of the second switch; and delay circuitry for deferring initiation of touch data computation by the touch data computer until a predetermined time has elapsed following the closure of the first switch.