Recording and playback modulation method and apparatus

Details Recording and playback modulation method and apparatus Recording and playback modulation method and apparatus

1977-07-01

1980-01-29

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

360 18, 360 30, 360 33, H04N 576, G11B 502, G11B 504, H04N 578

Patent

active

041864115

ABSTRACT:
Overlapping, minute regions of magnetization in a recording medium, which are produced during recording and cause distortion of the played back signal, are reduced by encoding the signal in a pulse signal. The time between pulses is varied according to the amplitude of the signal to be recorded, and when this pulse signal is recorded, the minute regions are reduced to elemental size. Thus they overlap less and do not distort the reproduced signal by offsetting the zero level.

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