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. 18, 1997
Filed:
Sep. 15, 1995
Minobu Yazawa, Hyogo, JP;
Shiro Hosotani, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In an FIFO memory, a word line pointer (4) sequentially specifies word lines (8) in accordance with the first clock signal (CLK1) outputted from a clock generator (3). When the last pointer (5) outputs a last line access signal (PAS3) indicating that the last word line (8E) has been accessed, a control flag generator (2) detects that the last address has been accessed on the basis of the last line access signal (PAS3) and a clock signal (COS) in synchronization with the first clock (CLK1) and outputs a clock control signal (CCNT) in accordance with a timing of the detection. The clock generator 3 stops counting a reference clock signal (CLK0) in response to the clock control signal (CCNT). Thus, the access to a memory cell array of the FIFO memory is stopped in accordance with the number of effective pixels of inputted video signals, and thereby reduction in memory capacity and in power consumption can be achieved.