Optical recording system

Details Optical recording system Optical recording system

1982-06-01

1985-05-07

McElheny, Jr., Donald

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369275, G11B 700

Patent

active

045162344

ABSTRACT:
An optical recording system for high recording density has been found for a system which uses a heat-meltable recording medium which is melted by illuminating the same with a laser beam according to the data to be stored. The spacing between adjacent pits on the recording medium is less than the diameter of the laser beam, and then, each pit overlaps partially with the succeeding pit on the recording medium. In spite of the overlap of the pits, the recorded data can be read out by reading only the non-overlapped portion of the bank of a pit. The spacing between the pits is preferably in the range between 1/3 and 1/2 of the diameter of the laser spot so that the recording density is at least two times as high as a prior recording medium.

REFERENCES:
patent: 4161752 (1979-07-01), Basilico
patent: 4176377 (1979-11-01), Howe
patent: 4241120 (1980-12-01), Datta et al.
patent: 4283785 (1981-08-01), Miyauchi et al.
patent: 4320489 (1982-03-01), Crandall et al.
patent: 4327430 (1982-04-01), Wada et al.
patent: 4359750 (1982-11-01), Howe

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