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. 26, 1980
Filed:
May. 22, 1978
Applicant:
Inventor:
Steven E Marum, Sherman, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G04C / ; G04B / ; G04B / ;
U.S. Cl.
CPC ...
58 2 / ; 58 5 / ; 307297 ; 340765 ; 357 92 ;
Abstract
An electronic system such as an electronic timepiece includes multi-level, integrated injection circuitry and a multiplexed liquid crystal display. A low-power voltage regulator is provided for driving the liquid crystal display and a current regulator is provided for driving the integrated injection logic circuitry. The current regulator is stacked between the logic levels in order to provide a fractional regulated voltage for driving the liquid crystal display without additional circuit elements and associated current drain.