Tilt detection system, tilt detection method and tilt...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval

Reexamination Certificate

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C369S044320

Reexamination Certificate

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07436746

ABSTRACT:
A tilt detection system includes an optical disk having a series of data recorded therein, the series of data having a pulse width smaller than the minimum pulse width of data recorded in an ordinary optical disk; a reproducing part reproducing a signal from the optical disk by emitting a light beam onto the optical disk; and a tilt detecting part detecting a tilt of the light beam with respect to the optical disk based on a reproduced RF signal provided by the reproducing part when the series of data having the smaller pulse width is reproduced.

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patent: 01-199329 (1989-08-01), None
patent: 08-045095 (1996-02-01), None
4.7 GB DVD-RAM, Matsushita Technical Journal, vol. 45, No. 6, Dec. 1999, pp. 679-685.

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