Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2006-06-20
2006-06-20
Lee, Michael G. (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
Reexamination Certificate
active
07063257
ABSTRACT:
A method of detecting a magnetic thread comprises causing relative movement between the thread and an array of magnetic heads, each head generates a signal upon detecting a portion of the thread. The arrival of a thread at one of the heads is detected, that head being denoted a primary head, and the head on each side a secondary head. Output signals from the primary and secondary heads are monitored to generate a representation of the thread, and the magnitude of the signals from the primary and secondary heads are compared such that if the magnitude of the output signal from a secondary head exceeds that from the primary head, the primary and secondary heads are reallocated accordingly.
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Buttifant John
Evans Peter Dilwyn
Potter Michael
Pullan Peter Alan
Scowen Barry Clifford
De la Rue International Limited
Franklin Jamara A.
Oliff & Berridg,e PLC
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