Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier
Patent
1998-05-05
2000-10-10
Faber, Alan T.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of the amplifier
360 46, G11B 502
Patent
active
061307955
ABSTRACT:
An apparatus and method for sensing and reporting connection integrity of a differential transmission line having proper parallel termination is constructed by generating an error signal which indicates that one or both differential input lines are open. The error signal is generated using a voltage comparator having a first and second input in which these inputs are coupled to the first and second ECL signal lines. The first and second input lines are also coupled to a supply voltage by a first and second dynamic impedance such that the input is pulled high when the signal lines are open. The comparator generates an error signal when the input voltages are greater than voltages normally seen on the signal lines indicating the presence of a open transmission line.
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Freitas David Anthony
Vannorsdel Kevin Roy
Faber Alan T.
International Business Machines - Corporation
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