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:
Oct. 16, 1979
Filed:
Apr. 18, 1978
Kalman Rozsa, Jarfalla, SE;
Datasaab Aktiebolag, Jarfalla, SE;
Abstract
The disclosure relates to a method and device for reading data in the form of data pulses in a pulse train. The pulse train is obtained by the sensing of a flexible disc and contains, conventionally, a sequence of clock pulses which, in at least a portion of the pulse train, define mutually subsequent bit cells. These contain at most one of the data pulses. A bistable circuit is switched to its one state by the clock pulses and switched to its other state by the data pulses. The time which has elapsed after each switching of the bistable circuit is measured by means of a time circuit and the bistable circuit is switched if the elapsed time exceeds a value which is settable for each switching. A combinational circuit is provided for setting the above-mentioned level in dependence of the contents of at least the preceding bit cell.