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:
Mar. 29, 1994
Filed:
Jul. 13, 1993
Applicant:
Inventors:
Weng-Lyang Wang, Saratoga, CA (US);
Way-Chen Wu, Saratoga, CA (US);
Long-Ching Yeh, Sunnyvale, CA (US);
Assignee:
Dyna Image Corp., Milpitas, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
348307 ; 358482 ; 348308 ;
Abstract
An improved contact image sensor (CIS) which uses a two-phase shift register is disclosed. The shift register is clocked by both phases of the clock signal, thereby doubling its speed. A transmission gate in the shift register is eliminated and combined with one of the inverters to allow two-phase operation and reduce the number of transistors required to implement the shift register.