magnetic videodisc

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Last updated

June 17, 2026

Quick Summary

A magnetic videodisc is a rigid circular plate, typically made of metal or plastic, used for recording video and audio signals. It functions similarly to a phonograph record and connects to a television for playback.1

In a magnetic videodisc, input signals are recorded as magnetic patterns on an oxide-coated surface, arranged in spiral tracks. A playback unit's video heads read these magnetic impressions, converting them back into electrical signals that produce pictures and sound. This technology is a form of magnetic recording.1

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videodisc
The magnetic videodisc has an oxide-coated surface onto which input signals are recorded as magnetic patterns in spiral tracks. The video heads of the playback unit pick up these impressions and produce electrical signals that are converted back into pictures and sounds (see also magnetic recording).
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The magnetic videodisc has an oxide-coated surface onto which input signals are recorded as magnetic patterns in spiral tracks. The video heads of the playback unit pick up these impressions and produce electrical signals that are converted back into pictures and sounds (see also magnetic recording).
Read More