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. 23, 1999
Filed:
Jul. 25, 1997
Hitoshi Kadoya, Ikeda, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A data processing apparatus reduces the number of steps performed by a processor so as to achieve a high-speed operation. A data memory, which stores data to be calculated by the processor, includes a first memory part and a second memory part each of which is connected to the same data bus and address bus. An address structure of the second memory part is identical to an address structure of the first memory part. One of first address data output from the processor and second address data provided from an external device is selectively provided to the first and the second memory parts so that the first address data is provided to the first memory part when the second address data is provided to the second memory part, and vice versa. A sort circuit rearranges the data output from the processor in a predetermined order so that the rearranged data is provided to the processor in the order of use by the processor. The data output from the processor and data from the external device is selectively provided to the first and second memory parts so that the data output from the processor is provided to the first memory part when the data from the external device is provided to the second memory parts, and vice versa.