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:
Oct. 07, 2008
Filed:
Apr. 18, 2005
Masatoshi Saito, Kanagawa, JP;
Tomonori Tsuchiyama, Kanagawa, JP;
Masatoshi Saito, Kanagawa, JP;
Tomonori Tsuchiyama, Kanagawa, JP;
Sony Ericsson Mobile Communications Japan, Inc., Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A voltage detector detects a start of power supply from a battery. When the voltage detector detects the start of power supply, a counter starts counting the clocks of an RTC. A first comparator compares a count value stored in a first non-volatile memory and the count value of the counter and outputs a CPU reset release signal when these count values match with each other. A second comparator compares a count value N stored in a second non-volatile memory and the count value of the counter and, when these count values coincide with each other, performs power-on operation of a regulator which outputs I/O power for the CPU. Accordingly, timing of CPU reset release and timing of regulator power-on can be readily modified without aluminum modification.