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. 23, 1996
Filed:
Oct. 19, 1992
Applicant:
Inventor:
Klaus Knupfer, Essingen, DE;
Assignee:
Carl-Zeiss-Stiftung, Heidenheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348303 ; 348304 ; 348297 ;
Abstract
A method and a circuit are disclosed for a low-noise processing of weak optical signals using normal photodiodes and a CCD-array. A shift register and collecting register effect the synchronous phase-correct accumulation over for example 100 periods and so transmit a signal amplified by this factor to a downstream circuit at a clock frequency reduced by the same factor. The invention is applicable for conducting optoelectronic run-time distance measurements.