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. 15, 1980
Filed:
Feb. 24, 1978
Chandler R Deming, San Diego, CA (US);
Cubic Western Data, San Diego, CA (US);
Abstract
A system for reproducing a recorded binary signal from a recording medium that may be read at varying speeds is disclosed. The recording medium in a magnetic recording medium in which the binary signal was recorded by effecting predetermined alternating flux changes in the recording medium, and in which the distance of separation between consecutively effected predetermined flux changes does not exceed a first predetermined distance and is not less than a second predetermined distance. The system includes a device for receiving the recording medium; a leading read head and amplifier circuit for sensing the predetermined changes in the received recording medium; a trailing read head and amplifier circuit for sensing the predetermined changes in the received recording medium, wherein the trailing read head is separated from the leading read head to sense the flux changes after the leading read head, and the distance of separation between the trailing and leading read heads is less than the first predetermined distance and more than the second predetermined distance; and a logic circuit that is responsive to the predetermined flux changes in the recording medium being sensed by the leading and trailing read heads for reproducing the recorded binary signal. The system is particularly useful for reproducing binary signals in response to flux changes that are read from the recording medium at speeds that may vary from 2 to 200 inches per second. Systems for reproducing pulse width modulated and F2F recorded binary signals are disclosed.