Video disc player with RFI reduction circuit including an AGC am

Details Video disc player with RFI reduction circuit including an AGC am Video disc player with RFI reduction circuit including an AGC am

1980-11-21

1983-05-24

Hecker, Stuart N.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Electrical modification or sensing of storage medium

358336, 455303, H04N 580

Patent

active

043853749

ABSTRACT:
Under certain conditions a video disc player can be responsive to externally applied interference signals to provide a defect in the display of the information recovered from the disc. Apparatus is provided to reduce the influence of the extraneous signal to the playback display. The apparatus includes an automatic gain controlled amplifier and a level detector which provides two output signals. One of the output signals is used to control the amplifier gain. When the other output signal reaches a certain level it is used to develop a signal which initiates corrective action in the player.

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patent: 4327431 (1982-04-01), Dieterich et al.
patent: 4327432 (1982-04-01), Lang et al.
patent: 4361881 (1982-11-01), Gibson
patent: 4364119 (1982-12-01), Clemens

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