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. 18, 1989
Filed:
Nov. 05, 1987
Applicant:
Inventor:
Vadim B Minuhin, Bloomington, MN (US);
Assignee:
Magnetic Peripherals Inc., Minneapolis, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 51 ; 360 40 ;
Abstract
An encoding/decoding system for 1,7,2,3 codes employs an oscillator having a frequency f and dividers providing signals at frequencies equal to 1/3 f and 2/3 f. A code converter is responsive to the three signals to encode or decode data. A 3/2 frequency divider employs two D-type flip-flops, an OR gate and an AND gate arranged to respond to an input signal at a frequency f to derive an output signal at a frequency 2/3 f.