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:
Feb. 17, 2015
Filed:
Nov. 05, 2013
Yamaha Corporation, Hamamatsu-Shi, Shizuoka-Ken, JP;
Hiroyuki Tsuchiya, Hamamatsu, JP;
Eiichi Takeishi, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
A serial memory stores a plurality of waveform samples. A tone generating unit has a plurality of channels operating in time-divisional manner to generate therethrough sound signals based on waveform samples read from the serial memory, each channel issuing a sample request for a waveform sample with specifying a read address of the waveform sample. Upon power on or reset of the tone generating unit, an access unit sets the serial memory to enable n-bit input/output operation. In response to the sample request, the access unit uses an n-bit input/output instruction to read the waveform sample by n bits per clock from a lead address that is the read address specified by the sample request, and supplies the waveform sample read from the serial memory to the tone generating unit.