TIME DIVISION MULTIPLEX LIGHT WAVELENGTH DIVIDING MULTIPLEX COMPOSITE TRANSMITTING SYSTEM AND NODE DEVICE FOR LIGHT LOCAL AREA NETWORK SYSTEM

摘要

PURPOSE: To simplify the node constitution and to facilitate the access processing by sending the data with the light wavelength corresponding to the receiving node into the time slot in which the node only can transmit the data, by the transmitting node. ;CONSTITUTION: Into a time slot partitioned by a frame pulse 2, a data packet 3 of the fixed length sent by plural different light wavelengths is transmitted. The inherent light wavelength is assigned as an address for each node 1 beforehand. The transmitting node is the light wavelength corresponding to the receiving node, and sends it into the time slot assigned to the transmitting node or the light wavelength outputted by the transmitting node. The receiving node receives only the light wavelength of the receiving node destination by a light wavelength selecting switch and passes the light wavelength except it in the condition of the light signal. Thus, by the small number of the electric-light converter and the light-electric converter, the nodes 1 is constituted. An access processing circuit in the nodes 1 becomes facilitated.;COPYRIGHT: (C)1993,JPO&Japio