Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1996-10-07
1998-09-15
Hindi, Nabil
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
3692754, 369 32, G11B 700
Patent
active
058090070
ABSTRACT:
An optical disk of the present invention has one or more recording tracks formed concentrically or spirally on the disk to which data signals are recorded by forming different-length marks and spaces on the tracks. An ID signal combining marks and spaces of two or more predetermined lengths approximately equal to the length of the marks and spaces forming the data signals is recorded to the recording tracks within a predetermined disk area, thus creating the ID signal by aligning the marks and spaces in the radial direction and recording the aligned marks and spaces to adjacent tracks in a predetermined radial disk area. Also, a reproduction apparatus for reproducing signals from the optical disk is disclosed.
REFERENCES:
patent: 5297131 (1994-03-01), Tanaka
patent: 5457674 (1995-10-01), Watanabe et al.
patent: 5563872 (1996-10-01), Horimai
Aoki Yoshito
Furumiya Shigeru
Gushima Toyoji
Ishida Takashi
Ohara Shunji
Hindi Nabil
Matsushita Electric - Industrial Co., Ltd.
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