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:
Feb. 06, 2007
Filed:
Mar. 11, 2004
Zenzo Oda, Chino, JP;
Zenzo Oda, Chino, JP;
Seiko Epson Corporation, , JP;
Abstract
A semiconductor integrated circuit is provided, using a one-port memory cell, capable of smoothly performing a data write/read operation in accordance with an instruction from a CPU and a data read operation to display an image on a display panel. The semiconductor integrated circuit includes a memory cell having a port through which data is input to and output from a set of bit lines, a write/read circuit connected with the port via the set of bit lines, a read circuit connected with the port via the set of bit lines, a CPU-system control circuit that controls the write/read circuit so that a data write or read operation based on a write request or read request from a CPU is performed for a first period, and a display-system control circuit that controls the read circuit so that data to be supplied to a display panel is read for a second period which does not overlap the first period.