发明名称 |
Device for displacing the reading head of a video disc in radial and vertical directions |
摘要 |
A device for providing access to information carried by a video disc comprises a fixed magnetic circuit having an air-gap which extends parallel to the radius of the disc. The access device is provided in addition with a low-weight moving system comprising at least one electric circuit forming a flat coil which is capable of sliding vertically within the air-gap and is so arranged that horizontal conductors are placed within the air-gap. Radial tracking and track-to-track transfer can be carried out by means of an electric circuit, at least one vertical conducting element of which is placed within the air-gap. Fast access is obtained by displacing this low-weight moving system.
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申请公布号 |
US4321701(A) |
申请公布日期 |
1982.03.23 |
申请号 |
US19790101505 |
申请日期 |
1979.12.10 |
申请人 |
THOMSON-CSF |
发明人 |
ARQUIE, LOUIS;BRICOT, CLAUDE |
分类号 |
G11B7/08;G11B7/085;G11B7/09;G11B7/12;G11B21/08;(IPC1-7):G11B7/08 |
主分类号 |
G11B7/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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