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:
Aug. 24, 1999
Filed:
Aug. 29, 1997
Arnold H Silver, Rancho Palos Verdes, CA (US);
Dale J Durand, Irvine, CA (US);
TRW Inc., Redondo Beach, CA (US);
Abstract
A correlated superconductor single flux quantum oscillator-counter analog-to-digital (A/D) converter has a superconducting quantum interference device (SQUID) quantizer 20 with two Josephson junctions 24 and 26, each connected to a digital sampling and counting circuit with synchronized timing to increase the sampling rate or the bit resolution of the A/D converter. In a preferred embodiment, a plurality of SQUID quantizers 60 . . . 72 each with two Josephson junctions 74 . . . 88 are connected to a counter structure with precisely synchronized timing to further increase the sampling frequency and/or the bit resolution. A counter structure preferably comprises multiple rows 218, 240, 254 of single flux quantum flip-flops 220 . . . 234, 242 . . . 248, 256, 258 and parallel-serial converter/shift registers 236 250, 260 to produce an output digital data stream in serial form.