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:
May. 25, 2004
Filed:
Feb. 28, 2003
Akira Toba, Osaka, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A memory access control circuit including a memory and a slot for receiving therein a memory card having a controller. Address, CS (chip select) and We (output enable) signals different in active period from one another are supplied to the controller. Due to this, ID data signals are read from the memory. The CPU determines for properness on the read-out ID data signals. Specifically, when the common data contained in the ID data signal exhibits a predetermined value, the ID data signal is determined proper. However, when the common data does not exhibit the predetermined value, the ID data signal is determined to be improper. The CPU determines as an optimal active period a shortest active period among the active periods that proper ID data signals have been read out.