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:
Aug. 30, 1994
Filed:
Jun. 25, 1993
Applicant:
Inventor:
Hisayoshi Matsui, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341139 ; 341159 ;
Abstract
Analog data which enters an analog/digital converter 401 is converted into corresponding digital data. The resulting digital data is outputted upon being shifted by a bit shifting circuit. The latter shifts the digital by a number of bits set in a bit-shift quantity setting register. As a result, automatic gain control can be performed by relying on simple processing without using an amplifier consisting of complicated analog circuitry. For example, by setting a '+1' bit in the bit-shift quantity setting register, the data resulting from the A/D conversion can be doubled. The data can be multiplied by eight if a '3' bit is set, and by 1/4 if a '-2' bit is set.