JPS5317045A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Information retrieval method and its device
Assignee: Hitachi Ltd
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Filing: 1976-07-30
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Granted: —
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Expires: 1996-07-30
Abstract
Abstract PURPOSE: In the direction perpendicular to the moving direction of the information groove used for a tracking operation tracing an information groove accurately, the information groove is finely oscillated at a specific frequency in order to vary this fine oscillation in every information groove, thereby reading and reproducing the information accurately. COPYRIGHT: (C)1978,JPO&Japio
Inventors
- 👤 Takeshi Maeda
- 👤 Seiji Yonezawa
- 👤 Moriji Izumida
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-03 16:19
CPC Classifications
—
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