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:
Jan. 09, 1979
Filed:
Feb. 02, 1977
Abstract
Items of information written in a binary code on a plurality of magnetic c tracks are read by a magnetic head. The address for each track is written in a reference zone having a plurality of cells equal to the number of bits in the address. A constant frequency cyclic reference signal H is divided by logic pulses from the head to produce a signal SYNCHRO. The bit of each address is determined by combining the SYNCHRO signals and a pulse representative of the binary value of each bit that depends on the temporal position of a pulse within a period of signal SYNCHRO. The number of cells is counted, each time a bit is determined. The address is sampled bit by bit and transferred to a storage member throughout the counting and sampling operations.