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:
Jan. 24, 1995
Filed:
May. 25, 1993
Ikumasa Ikeda, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is disclosed a control circuit of a memory device of a random access type for storing first data and second data whose reading/writing cycle time is longer than that of the first data, including: a memory circuit for reading/writing a predetermined number of first data into/from each memory block which is obtained by dividing the memory device into at least two or more memory blocks, for reading/writing the second data into/from the other memory blocks, and for supplying address signals for the reading/writing cycle period of time of the second data; and a memory switching circuit for switching and using the memory blocks in order to read/write the first and second data, so that the memory device can be accessed at a high speed by using a small capacity.