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. 04, 2000
Filed:
May. 28, 1998
Applicant:
Inventor:
Takaaki Yamada, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341155 ; 348505 ; 348538 ;
Abstract
An analog signal, for example, a video signal is divided into a high frequency signal and a low frequency signal by a high-pass filter and a low-pass filter. A high speed analog-to-digital converter (ADC) converts the high frequency signal to a first digital code while a low speed but high precision ADC converts the low frequency signal to a second digital code. A synthesizer combines the first and second digital codes and outputs a digital code as the result of the conversion. Therefore, analog-to-digital conversion with a high speed, high precision, and high resolution can be realized.