Dynamic magnetic information storage or retrieval – General processing of a digital signal – In specific code or form
Patent
1986-04-09
1987-01-27
Cardillo, Raymond F.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
In specific code or form
360 722, 307234, 340347DD, G11B 2728, G11B 509
Patent
active
046397930
ABSTRACT:
In recording and/or detecting two different marking signals on or from a record carrier, a generator for marking signals comprises at least one pulse generator which supplies marking signals in the form of two marking-pulse trains M1 and M2 having the same frequency but having different duty factors with the values k and 1-k respectively, which differ from 0.5. A detection circuit for detecting marking signals detects the duty factor of a marking pulse train M1 or M2 respectively and which supplies a specific detection signal in conformity with its detected pulse train.
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patent: 4184179 (1980-01-01), Deming
EDN, vol. 23, No. 9, "Standard 3M Recording Techniques Could Spur Low-Cost .mu.C use", Kramer, 5/5/78, pp. 75-81.
Cardillo Raymond F.
Garland Steven R.
Treacy David R.
U.S. Philips Corporation
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