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. 21, 2001
Filed:
Mar. 19, 1999
James R. Thomas, Sandy Spring, MD (US);
Soheil I. Sayegh, Gaithersburg, MD (US);
Comsat Corporation, Bethesda, MD (US);
Abstract
In a multi-channel demodulator, a detection-transition sample estimation scheme classified samples as left (L) or right (R) of a reference position within a symbol interval (,), or before (B) or after (A) a transition between symbols (,). When a sample is classified as L or B, the classification of the next sample is forced to R or A, respectively. A memory is provided for storing the contents of various registers when switching to processing of a different channel, and for retrieving from the memory stored data corresponding to previous processing of the different channel. Data read from the memory is written to a register downstream of the register from which it was taken when written to the memory. The read cycle of the memory is extended to ensure that a clock is available to load the data from memory into the downstream register after switching to the new channel.