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:
Sep. 22, 1992
Filed:
Mar. 26, 1991
Kevin L Pettijohn, Goleta, CA (US);
Todd E Sessler, Goleta, CA (US);
John A Stineman, Goleta, CA (US);
Santa Barbara Research Center, Goleta, CA (US);
Abstract
Method and apparatus for performing a TDI function with a plurality of electrical signals. A first step of the method stores, during individual ones of a first plurality of consecutive time intervals, a sample of a first electrical signal. A second step of the method equilibrates, during individual ones of a second, subsequent plurality of time intervals, one of the stored samples with a stored sample of a second electrical signal. Subsequent to each of the steps of equilibrating, an electrical signal is outputted that has a magnitude expressive of the equilibrated stored samples. The equilibration is achieved by shorting storage capacitors (C.sub.1, C.sub.2, C.sub.3) together to effectively sum coherent signals and incoherent noise. The charge sum is stored on a capacitance that is effectively doubled from either detector channel operating individually. The output signal remains in the same range as would be an individual detector channel output voltage, without TDI, and no reduction in dynamic range is incurred.