Nippon Electric Co., Ltd.

Nippon Telegraph and Telephone Public Corporation

Itsuo Matsubara

Mitsuhito Sakaguchi

Nobuo Nishida

Suehiro Miyazaki

Masahiro Moriwaki

Relatively large hologram storage plates, e.g., those storing a large number of discrete entries such as character definitions for a large character set, comprise an array of mini-holograms arranged in different memory plate sections. A different photodiode array is associated with each hologram plate section (for efficiency, some elements of different diode arrays may be common). When the stored contents of any mini-hologram are interrogated by a coherent light beam, the stored information is derived via the associated photodiode array and converged (as by OR logic) to memory output terminals.

Growing community of inventors

Fujisawa, Japan

Itsuo Matsubara