Video signal processing device including emphasis and/or de-emph

Details Video signal processing device including emphasis and/or de-emph Video signal processing device including emphasis and/or de-emph

1982-05-04

1986-02-11

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

358166, 358335, 358340, 333 28R, H04N 576

Patent

active

045701938

ABSTRACT:
A video signal processing device including emphasis and/or de-emphasis circuit being arranged to have a circuit to emphasize a high frequency component of a video signal which has been introduced at a time of frequency modulation in a linear phase. Further, the circuit clips an output of the emphasis circuit with a prescribed amplitude and at the same time supplies a frequency modulated video signal to a de-emphasis circuit which has a characteristic of being contrary to the frequency characteristic of the emphasis circuit.

REFERENCES:
patent: 3288930 (1966-11-01), Johnson
patent: 3535443 (1970-10-01), Rieke
patent: 4232279 (1980-11-01), Prince
patent: 4330769 (1982-05-01), Dean et al.
Baertsch et al., "The Design and Operation of Practical Charge-Transfer Transversal Filters", IEEE Transactions on Electron Devices, vol. Ed-23, No. 2, 2/76, pp. 133-141.

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