Title:
【発明の名称】非同期伝送モードネットワークにおける光学処理
Document Type and Number:
Japanese Patent JP3300351
Kind Code:
B2
Abstract:
PCT No. PCT/GB93/00090 Sec. 371 Date Sep. 8, 1994 Sec. 102(e) Date Sep. 8, 1994 PCT Filed Jan. 15, 1993 PCT Pub. No. WO93/14604 PCT Pub. Date Jul. 22, 1993An optical code recognition unit (OCRU) for recognizing a predetermined n-bit optical code has an n-way splitter having an input and n parallel outputs. A plurality of combiners are associated with the splitter outputs, and a respective gate is controlled by the output of each of the combiners. Each of the splitter outputs is subject to a different delay of from 0 to (n-1) bit periods, and each combiner receives an input from at least one of the splitter outputs. The OCRU is such that all the gates are turned on if a predetermined optical code is applied to the splitter input.
Inventors:
Marshall, Ian William
Twiddle, Mark Bryan
Twiddle, Mark Bryan
Application Number:
JP51229093A
Publication Date:
July 08, 2002
Filing Date:
January 15, 1993
Export Citation:
Assignee:
British Telecommunications Public Limited Company
International Classes:
G06E1/02; H04B10/00; H04B10/27; H04L12/56; H04Q3/00; H04Q3/52; H04Q11/00; H04Q11/04; (IPC1-7): H04L12/56; H04B10/02; H04Q3/52
Other References:
【文献】Prucnal,P.R.;Perrier,P.A.,Optically - processed routing for fast packet switching,IEEE LCS,IEEE,1990年 5月 1日,Volume:1 Issue:2,54 - 67
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)