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. 29, 1999
Filed:
Sep. 15, 1997
Hidehiko Tanaka, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A semiconductor memory device of the present invention includes a memory cell array including m sub-arrays, each having a number of memory cells arranged in a matrix and including M/m (m is an integer of 2 or more; M/m is an integer of 2 or more) memory rows and N (N is an integer of 2 or more) memory columns. In an image space in a matrix including M pixel rows and N pixel columns, the M pixel rows are divided into M/m blocks, m pixel rows in each of the M/m blocks are in a one-to-one correspondence with the m sub-arrays, and the M/m blocks are in a one-to-one correspondence with the M/m memory rows in each of the sub-arrays. The semiconductor memory device also includes a row address control circuit for, in a case where a pixel address of data on the image space is input, accessing the memory cell array by selecting a memory row corresponding to a block to which the data belongs in a sub-array corresponding to a pixel row of the block to which the data belongs.