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:
Feb. 20, 1990
Filed:
Oct. 05, 1988
Applicant:
Inventor:
Arnoldus J Boudewijns, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365194 ; 365149 ; 36518905 ; 365191 ; 36518906 ; 307243 ; 307601 ;
Abstract
An amplifier (63) at the output (41) of a delay circuit (3) comprising capacitive memory elements (5, 7, 9, 11) which can be successively written and successively read in a manner which is delayed with respect to the writing sequence is formed as a differential amplifier having a special negative feedback (73, 75) and a double sampling circuit (55, 57) at its two inputs (61, 65) to obtain a sufficiently high output voltage and to serve as a hold circuit so that no stringent requirement need to be imposed on the bandwidth of the amplifier.