Registers – Coded record sensors – Particular sensor structure
Patent
1988-07-25
1990-04-10
Psitos, Aristotelis M.
Registers
Coded record sensors
Particular sensor structure
235437, 235493, 360 25, 369 58, G06K 500, G06K 708
Patent
active
049162942
ABSTRACT:
A system for reliably recording digital data on marginal magnetic recording medium by utilizing a two-track format and testing to locate pairs of record-quality areas of the medium. A magnetic stripe on a document is defined into a pair of recording tracks each with a sequence of bit locations. Associated pairs of bit locations (one from each track) are jointly tested for recording quality. One bit location of poor quality eliminates the pair; however, if both bit locations meet a standard, they are employed cooperatively to record data. Specifically, each bit location initially is recorded with a pulse. Any pair of bit locations which cannot meet the standard is totally cleared (erased), while pairs of bit locations meeting the standard are selectively erased to represent digital data.
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Light Signatures, Inc.
Psitos Aristotelis M.
Weinhardt Robert A.
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