Optical disc which stores digital information in...

Details Optical disc which stores digital information in... Optical disc which stores digital information in...

2003-01-21

2008-03-18

Klimowicz, William J (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S109020

Reexamination Certificate

active

07345987

ABSTRACT:
The present invention includes an optical disc whose informational units each contain a raised pad designed to reflect laser light at a compound angle which is 45 degrees from the disc surface and at one of 1024 preset angles between 0 and 360 degrees (with 0 degrees being oriented radially towards the disc center). Light reflected from the information units intersects with a ring of light detecting receptors arranged circumferentially around the laser/light source. When individual receptors are struck by reflected laser light: a signal is sent to a processor. This processor determines the order in which the receptors are stuck and outputs integers. Each integer corresponds to the receptor that was struck and this data, when streamed sequentially, reproduces the data stored on the optical disc.

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patent: 6535343 (2003-03-01), Bar-Gadda
patent: 2000276732 (2000-10-01), None

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