Reading system for use with optical disc memory system utilizing

Details Reading system for use with optical disc memory system utilizing Reading system for use with optical disc memory system utilizing

1987-10-08

1989-05-30

Faber, Alan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369110, 369100, 365108, G11B 713

Patent

active

048357510

ABSTRACT:
An improved magneto-optical disc memory with a ferroelectric liquid crystal (FLC) is shown. As FLC a chiral smectic liquid crystal is employed to exhibit a bistability between a pair of substrates which have easy polarization axes normal to each other. Information to be recorded is written on the disc in terms of a binary system by use of the bistability. Reproduction is performed using a polarizing plate and a photodetector.

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