Apparatus for reproducing information data from...

Details Apparatus for reproducing information data from... Apparatus for reproducing information data from...

2007-07-31

2007-07-31

Dinh, Tan (Department: 2627)

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

Reexamination Certificate

active

10360363

ABSTRACT:
An apparatus is provided for reproducing optical disks. An optical head irradiates linearly polarized light onto an optical disk. A change of a polarization orientation of light that is transmitted or reflected from the optical disk is detected in accordance with a recording signal on the optical disk. The apparatus moves the optical head into a pre-determined portion of the optical disk where write-once information is stored, and reproduces the write-once information after detecting a change of a polarization orientation of light that is transmitted or reflected from the pre-determined portion.

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