Invention Application
WO1998007146A1 METHOD AND DEVICE FOR CONTROLLING TRACKING OF OPTICAL MEMORY CARD
审中-公开
用于控制光记忆卡跟踪的方法和装置
- Patent Title: METHOD AND DEVICE FOR CONTROLLING TRACKING OF OPTICAL MEMORY CARD
- Patent Title (中): 用于控制光记忆卡跟踪的方法和装置
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Application No.: PCT/JP1997002836Application Date: 1997-08-15
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Publication No.: WO1998007146A1Publication Date: 1998-02-19
- Inventor: KABUSHIKI KAISHA NIPPON CONLUX
- Applicant: KABUSHIKI KAISHA NIPPON CONLUX , OHTA, Michihiro , YOSHIDA, Hiroaki
- Assignee: KABUSHIKI KAISHA NIPPON CONLUX,OHTA, Michihiro,YOSHIDA, Hiroaki
- Current Assignee: KABUSHIKI KAISHA NIPPON CONLUX,OHTA, Michihiro,YOSHIDA, Hiroaki
- Priority: JP8/215741 19960815
- Main IPC: G11B07/09
- IPC: G11B07/09
Abstract:
A method and device for controlling the tracking of an optical memory card by which synchronism can be established easily, a track holding mistake can be detected and corrected easily, high speed operation can be realized and the double-writing, etc. can be avoided. The guide tracks (2) for optical memory cards are composed of the rows of guide track segments (4, 4a, 4b, 4c and 4d). A synchronizing signal is extracted from the row pattern of the guide tracks detected by photodetectors (11 and 12) and a data recording track (1) is identified to establish synchronism and a track holding mistake is detected and corrected.
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