The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 1994
Filed:
Mar. 09, 1992
Ichiro Ogura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A light connecting device for routing information uses only light signals. The light connecting device includes photoelectric input/output elements having a light threshold and a light memory, a polarized beam splitter, and light delay circuits having different light delays. The light input signal includes a timing signal and an information signal sequentially input into the beam splitter. The timing light signal is separated from the other signals using the beam splitter and then input into the respective photoelectric input/output elements through the light delay circuits. If the address light signal is incident in synchronization with that of the timing light signal, only the element on which the address and timing lights are simultaneously incident is turned ON and acts as a light amplifier by injecting current to amplify the information signals. Thus, the light connecting device of the invention realizes a self-routing operation using only light signals having the address of information specified by light signals.