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:
Apr. 15, 2003
Filed:
Dec. 18, 1998
Applicant:
Inventor:
Kazuya Takahashi, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/700 ;
U.S. Cl.
CPC ...
H04B 1/700 ;
Abstract
An A/D converter executes an A/D conversion of an inputted signal having a ramp waveform in response to a clock signal and sequentially stores digital output data into memories. In response to the clock signal, the storage data is read out from the memories. In a calculator, from certain data, data whose phase is delayed by one clock from such data is subtracted and a peak value of a subtraction value is detected by a peak detector. When the peak value lies within a range of ±1, it is determined that no glitch noise occurs. When the peak value exceeds the range of ±1, it is decided that the glitch noise has occurred.