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:
Mar. 25, 1997
Filed:
Jul. 25, 1994
Shuuichi Matsumoto, Hamamatsu, JP;
Chifumi Takeuchi, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
When a digital signal processor (i.e., DSP) performs a data processing on data stored in a memory (e.g., RAM) in accordance with instructions given from a CPU, data read/write controls are carried out with respect to the data transmitted between the DSP and memory. In accordance with built-in micro-programs, the DSP produces plural musical tone signals in time-division manner. When employing 32-bit data to be processed in the DSP, this 32-bit data is divided into four sets of 8-bit data, which are sequentially written in the memory, for example. Thereafter, the DSP reads such four sets of 8-bit data from the memory, and then, the DSP converts them into the 32-bit data, so that the DSP can perform the predetermined data processing on the converted 32-bit data. Thus, the DSP, employing M-bit data to be processed therein, can be freely coupled with the memory which stores N-bit data (where M.gtoreq.N), as long as 'M' is equal to or a multiple of 'N'.