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. 27, 2000
Filed:
Feb. 11, 1999
Mitsumasa Okubo, Hino, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A camera control circuit is provided which is capable of carrying out a control operation under a required high voltage even in the case of using a low withstand voltage circuit element which is capable of operating at a high speed and a low power consumption. A CPU comprises of an I/O section which is capable of operating in a predetermined supply voltage range and a core section which is capable of operating in a predetermined supply voltage range having an upper limit value lower than the I/O section, and outputs a control instruction so as to control peripheral circuits. On the basis of the control instruction, a voltage-up circuit increases a supply voltage of a battery in a supply voltage range enabling the I/O section to operate so as to set as a first supply voltage, and then, supplies the first supply voltage to the I/O section. On the other hand, a regulator included in an interface IC decreases the first supply voltage for a predetermined period in a supply voltage range enabling the core section to operate so as to set as a second supply voltage, and then, supplies the second supply voltage to the core section.