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:
Jan. 09, 2001
Filed:
Sep. 24, 1998
Pochung Young, Fremont, CA (US);
Li-Chun Li, Los Gatos, CA (US);
Mosel Vitelic, Inc., Hsin Chu, TW;
Abstract
In accordance with the present invention, a circuit provides a bias voltage V,which is substantially insensitive to variations of a power supply voltage powering the circuit. The circuit includes a detector circuit for generating a signal from the power supply voltage and the bias voltage V,wherein the signal is substantially insensitive to variations in the power supply voltage while being responsive to the bias voltage V,The circuit further includes a voltage generator circuit for generating the bias voltage V,wherein the voltage generator is responsive to the signal such that the detector circuit and the voltage generator maintain the bias voltage V,at a substantially constant value over power supply voltage variations. The detector circuit also includes a circuit for allowing bias voltage V,to get arbitrarily close to the ground voltage but not allowing the bias voltage V,to become positive.