OPTICAL A/D CONVERTER

Title:

OPTICAL A/D CONVERTER

Document Type and Number:

Japanese Patent JPH0527290

Kind Code:

A

Abstract:

PURPOSE:To concrete a neural network type optical A/D converter which is conventionally known only as a model and has no initial value dependence as an optical A/D converter. CONSTITUTION:A feedback system consists of an optical arithmetic means 1 and a comparator device 2 and this feedback system performs the arithmetic of the right-hand member of an arithmetical equation Ui=[(SIGMAWijj+Hi)V+A]Si, where is 0 when i>j>=0 or -2**(**j: raised to (j)th power) when j>i<=0, hi -2 **i or -[(2**i)-epsilon)(¦epsilon¦<=1), V and Si are optional plus number, and the sum the lst term of the right-hand member is 0-n-1 as to (j). In this arithmetic process, the optical arithmetic means 1 performs the optical arithmetic of at least [(SIGMAWijXi)V]Si and the comparator device 2 performs specific threshold processing for the left-hand member of the arithmetical equation.

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Inventors:

KONDO HIROSHI
SATO SHIRO

Application Number:

JP18484491A

Publication Date:

February 05, 1993

Filing Date:

July 24, 1991

Export Citation:

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Assignee:

RICOH KK
RICOH GEN ELECTRON RES INST

International Classes:

G02F7/00; H03M1/40; (IPC1-7): G02F7/00

Attorney, Agent or Firm:

Toru Kabayama (1 person outside)

Next Patent: ATOM FLUORESENCE ANALYZING UNIT