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:
Jul. 06, 1999
Filed:
Dec. 19, 1996
Applicant:
Inventors:
Young Jung Choi, Chungcheongbuk-Do, KR;
Joo Weon Park, Seoul, KR;
Assignee:
Hyundai Electronic Industries, Co., Ltd., Kyungki-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
327536 ; 327534 ; 327537 ; 327390 ; 327589 ; 307110 ;
Abstract
The present invention discloses a negative voltage drive circuit which does not takes an influence from the load capacitor or the power supply voltage drive circuit according to the present invention comprises a cross pumping circuit, a pumping unit block and circuit for supplying VCC or VSS power supply voltages for the pumping unit block.