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. 22, 1996
Filed:
Jun. 10, 1994
Iwao Higashi, Shimonoseki, JP;
Yamaha Corporation, , JP;
Abstract
A tone signal control system for controlling a tone signal supplied from a tone generator. The tone signal control system includes a CPU for executing a computational and control operation in accordance with an externally stored program, a DSP for executing a computational and control operation in accordance with an internally stored program, a memory accessible by both CPU and DSP, and an access controller for controlling an access by CPU and DSP to the memory. The access controller calculates a logical product of a clock signal, an access signal from CPU, and an access signal from DSP, and outputs the logical product as a CPU wait signal. The tone signal control system is not required to increase the number of pins too many even if CPU and DSP are assembled on a single chip.