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. 12, 2002
Filed:
Nov. 13, 2000
Philippe Messager, Nantes, FR;
Atmel Nantes S.A., , FR;
Abstract
A device for generating a low-consumption controlling analogue voltage of stable value adapted for controlling LCD display segments that comprises an input circuit receiving an analogue voltage of given nominal value adapted to generate a picture analogue voltage of reduced value in a ratio k. A driver circuit is provided to receive the picture analogue voltage as a reference signal and a picture signal derived and reduced in the same ratio k from the low-consumption analogue voltage and comprises a differential amplifier supplied with a first and a second constant voltage value for outputting a first and a second switch control pulse. A switching circuit comprising a first switching branch outputting an amplified auxiliary switch control pulse synchronous with the reference signal and a second switching branch controlled by the amplified auxiliary switch control pulse is adapted to outputting the low-consumption analogue voltage switched to the analogue voltage of given value.