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:
Apr. 06, 1993
Filed:
Aug. 09, 1991
Dennis M Briddell, Raleigh, NC (US);
Memorex Telex N.V., Amsterdam, NL;
Abstract
A data recovery system for deriving digital data from a bi phase encoded stream wherein signal transition occurs at mid-bit or bit boundary having an edge detector for detecting the occurrence of each fallen edge of a data stream, an edge decoder connected to the detector for determining the time between successive falling edges, a falling edge identifier connected to the edge decoder for determining whether a detected fallen edge occurs on a bit boundary or at a mid-bit, a falling edge memory connected to the falling edge identifier for remembering whether the previous falling edge occurred at a bit boundary or at mid-bit, a data decoder connected to receive input from the falling edge memory and the edge decoder, and having logic for determining the recovered data according to a table in which the data is identified in response to the occurrence at a bit boundary or at mid-bit and a selected spacing between falling edges.