United States Patent [19]
Powell
[li] Patent Number: 4,486,653 [45] Date of Patent: Dec. 4, 1984
[54] ADAPTIVE RATE CARD DATA REPRODUCING AND STORING APPARATUS
[75] Inventor: Kenneth E. Powell, Boca Raton, Fla.
[73] Assignee: International Business Machines, Armonk, N.Y.
[21] Appl. No.: 315,761
[22] Filed: Oct. 28, 1981
[51] Int. CU G06K7/08
[52] U.S. CI 235/449; 235/472;
235/474; 235/482
[58] Field of Search 235/449, 474, 472, 482;
360/2
[56] References Cited
U.S. PATENT DOCUMENTS
3,597,751 8/1971 Heidecker et al 360/2
3,749,889 7/1973 Vaskunas 235/474
3,751,639 8/1973 Searle 235/474
3,864,548 2/1975 Oneil 235/466
3,902,129 8/1975 Boothroyd 329/107
3,946,206 3/1976 Darjany 235/449
3,947,662 3/1976 Vinal 235/402
4,096,378 6/1978 Vinal 235/466
4,143,355 3/1979 Maclntyre 235/449
4,184,179 1/1980 Deming 360/44
4,345,278 8/1982 Double 235/474
Primary Examiner—Harold I. Pitts
Attorney, Agent, or Firm—Otto Schmid, Jr.
[57] ABSTRACT
The invention is directed to circuitry for reproducing the data on a magnetic stripe recorded. A security access card is manually passed through a card-reading device at an uneven low velocity, storing the data in one half cycle of operation in uniform number of data storage cells despite the unevenness of speed, and reading out the data at a predetermined rate, during the other half cycle of operation for delivery to a data processing unit.
8 Claims, 12 Drawing Figures
