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:
Aug. 05, 2014
Filed:
Feb. 27, 2009
Robert C Brooks, Houston, TX (US);
Patrick L Ferguson, Cypress, TX (US);
Robert S Wright, Spring, TX (US);
Robert C Brooks, Houston, TX (US);
Patrick L Ferguson, Cypress, TX (US);
Robert S Wright, Spring, TX (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A first resistance () within a power supply () can be connected to a power supply output (). A variable resistance () can be serially coupled with the first resistance, thereby providing a first intermediate voltage at a point () disposed between the first resistance and the variable resistance. The variable resistance can be at a maximum in the absence of an expansion device () and at less than maximum in the presence of an expansion device. The first intermediate voltage and a second intermediate voltage () can be introduced to a comparator (). The comparator can provide an output signal () when the first intermediate voltage exceeds the second intermediate voltage. The comparator output signal can be used to confirm the power supply capacity to power an external device () and to enable one or more external device functions.