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. 23, 1989
Filed:
Aug. 24, 1987
Kenji Nagai, Hamura, JP;
Masayuki Yamashita, Higashimurayama, JP;
Masafumi Kanagawa, Ohme, JP;
Mitsumasa Sato, Ohme, JP;
Tsuneo Ito, Ohme, JP;
Hitachi Ltd., Tokyo, JP;
Hitachi VLSI Engineering Corp., Tokyo, JP;
Abstract
An A/D converter apparatus comprises: a sampling signal generating means to generate an oversampling signal and an internal sampling signal; a converter means to convert an input analog signal into a digital signal in synchronism with the oversampling signal; and a decimator means to perform a specified decimation on the digital signal in synchronism with the internal sampling signal; whereby the sampling signal generating means maintains the frequencies of the oversampling signal and the internal sampling signal in a specified relationship.