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:
May. 10, 1994
Filed:
Nov. 16, 1992
Charles S Weaver, Palo Alto, CA (US);
Neural Systems Corporation, Los Altos Hills, CA (US);
Abstract
Apparatus is shown for regenerating a signal stream of binary digits which has been distorted by intersymbol interference during passage through a channel (10 and 12) having insufficient channel bandwidth such that the channel output waveform comprises substantially an analog signal. (FIG. 2 at B and D.) After equalization (24) the channel output is converted to a digital sample signal stream at analog-to-digital converter (26). The converter (26) output is supplied to shift register (28) from which successive groups of digital sample signals produced over a plurality of bit intervals of channel output are shifted to decoder (22). Initialization bits that immediately precede the first group of binary digits to be regenerated also are supplied to decoder (22) through sector header reader (20) for use in decoding the first group of digital sample signals supplied to the decoder. During decoding of subsequent groups of digital sample signals, end bits (3,4 and 5) from the preceding group of regenerated binary digits are supplied to the decoder (22). The decoder includes a plurality of trained networks (40-1 through 40-5 and 50-1 through 50-m) of either the neural network or binary tree type.