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:
Mar. 19, 1985
Filed:
Jul. 05, 1983
George V Jacoby, Los Altos, CA (US);
Martin Cohn, Arlington, MA (US);
Sperry Corporation, New York, NY (US);
Abstract
Apparatus and method for encoding binary data in a ternary format including ternary 0, ternary 1 and ternary 2 code symbols. In a preferred embodiment of the invention utilized for magnetic data storage, a ternary 0 is represented by the absence of signal change, a ternary 1 is represented by a single transition and a ternary 2 is represented by a pulse or pair of closely spaced transitions. Further features of the invention provide for merging ternary code symbols so as to prevent the spacing between adjacent symbols from becoming so small as to create undesirable crowding, and inserting and shifting symbols to prevent the spacing between adjacent symbols from becoming so great as to adversely affect recovery of the encoded data.