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:
Jun. 09, 1998
Filed:
Sep. 13, 1996
Tomoyuki Kawai, Tenri, JP;
Kouji Inoue, Ikoma, JP;
Sharp Kabushiki Kaisha, Nagaike-cho, JP;
Abstract
A semiconductor read-only memory includes a plurality of memory cell groups each having a plurality of memory cells, a first selector for selecting an arbitrary memory cell group from the plurality of memory cell groups, and a second selector for selecting an arbitrary memory cell from the selected memory cell group. The semiconductor read-only memory further includes: an address storage circuit for storing address information of a predetermined memory cell portion in a memory cell group; a data storage circuit for storing memory cell information of the predetermined memory cell portion; and a switching circuit for switching between information stored in the memory cell selected from the memory cell group and the memory cell information stored in the data storage circuit, based on the address information, and outputting either the information stored in the memory cell selected from the memory cell group or the memory cell information stored in the data storage circuit.