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:
Jan. 27, 2004
Filed:
Jul. 23, 2002
Neil E. Wood, Centreville, VA (US);
BAE Systems, Information and Electronic Systems Integration, Inc., Nashua, NH (US);
Abstract
A single-event upset immune frequency divider circuit is disclosed. The single-event upset immune frequency divider circuit includes a dual-path shift register, a dual-path multiplexor, and a summing circuit. The dual-path shift register has a clock input, one signal input pair and multiple signal output pairs. The dual-path multiplexor has multiple signal input pairs and one output pair. The signal input pairs of the dual-path multiplexor are respectively connected to the signal output pairs of the dual-input shift register. The dual-path multiplexor selects one of the signal output pairs of the dual-path shift register for feeding back into the signal input pair of the dual-path shift register. The summing circuit then sums the signal input pair of the dual-path shift register to generate an output clock signal that is a fraction of the frequency of an input clock signal at the clock input of the dual-path shift register.