Registers – Coded record sensors – Particular sensor structure
Patent
1993-04-15
1995-07-18
Psitos, Aristotelis
Registers
Coded record sensors
Particular sensor structure
360 44, G06K 708, G11B 509, G11B 2014, G11B 2016
Patent
active
054344000
ABSTRACT:
A method for decoding F2F signals as well as a device for decoding F2F signals read from a magnetic data carrier is provided. The signal read from the card by a magnetic reading head is amplified by an amplifier with a very high gain, discriminated in a discrimination and integration station to receive a binary looking signal. Out of this digitized signal in a reference time acquisition station a start-up time value is set and a phase is estimated to determine the correct end of a bit cell in a phase estimating station. In a symbol correlation station the received binary signal is correlated with all possible symbol combinations based on the estimated phase to create a correct bit stream. This bit stream might be processed further by a bit recovery station providing a corrected bit stream ready for interpretation.
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patent: 5168275 (1992-12-01), Harrison et al.
patent: 5204513 (1993-04-01), Steele
International Business Machines - Corporation
Psitos Aristotelis
Tennent A. P.
Wamsley Patrick
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