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. 03, 1993
Filed:
Apr. 16, 1992
Applicant:
Inventor:
Mamoru Kimpara, Hamamatsu, JP;
Assignee:
Yamaha Corporation, Hamamatsu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G10F / ; G10H / ;
U.S. Cl.
CPC ...
84609 ;
Abstract
An automatic performance apparatus includes a memory for storing performance data which is generated by an external unit such as an electronic musical instrument having a keyboard. The apparatus includes a measuring unit for measuring the elapsed time of a progressive tune, and a ratio computing unit for computing a time ratio between the measured elapsed time and the total time required to read out all the performance data. This time ratio is displayed to the user. Further, a jump control unit employs the time ratio to determine a jump amount in a fast-forward and fast-rewind mode.