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:
May. 17, 1988
Filed:
Sep. 24, 1986
Applicant:
Inventors:
Toshiro Tsukada, Hachioji, JP;
Seiichi Ueda, Takasaki, JP;
Tatsuji Matsuura, Tokyo, JP;
Yuichi Nakatani, Mitaka, JP;
Eiki Imaizumi, Fuchu, JP;
Assignees:
Hitachi, Ltd, Tokyo, JP;
Hitachi VLSI Engineering Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
3403 / ;
Abstract
In a serial-parallel A/D converter, at least two sets of comparators are provided for the conversion of the low-order bits and are operated in a cyclic fashion. Since the subsequent input can be subjected to the A/D conversion without waiting for the determination of the low-order bits, the conversion speed is increased.