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. 09, 1995
Filed:
Apr. 02, 1993
Robert H Lee, Palo Alto, CA (US);
John D Kenny, Sunnyvale, CA (US);
Cirrus Logic, Inc., Fremont, CA (US);
Abstract
A power control circuit for a device such as a personal computer, including a laptop or notebook computer, which can conserve battery use, prevent power surges to promote longer battery charges and longer battery life, and can assure that circuitry is correctly biased. The power control circuitry of the present invention achieves these objectives by appropriately staggering the powering on of circuit components of the computer. A circuit for achieving these objectives may feature at least one memory for storing power control state data and a multiplexer for receiving the power control state data stored in the at least one memory. Further, a plurality of serially connected power control output circuits connected to the multiplexer output power control signals based on the power control state data stored in the at least one memory. A first of the plurality of serially connected power control output circuits has a minimum delay and each succeeding of the plurality of serially connected power control output circuits has an increasing delay.