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:
Feb. 05, 2008
Filed:
Nov. 25, 2003
Applicant:
Qiong M. LI, Cortlandt Manor, NY (US);
Inventor:
Qiong M. Li, Cortlandt Manor, NY (US);
Assignee:
Koninklijke Philips Electronics NV, Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 3/017 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus is provided to generate a pulse-width modulated (PWM) with enhanced features in accordance with a pre-determined protocol using a standard microprocessor. The method and apparatus is able to handle both variable on/off-timing control and multiple-event interrupts. The PWM functions of the present invention are implemented by software in the microprocessor that handles not only on/off events controlled by external pins, but is programmable on/off timing as well.