Abstract: The invention is to provide a cord-identification tag which is to be attached to an optical cord and which is an integrally-molded resin product, the cord-identification tag including: a flat display section which includes a display surface displaying cord-identification information, a neck section which extends from the display section parallel to the display surface and whose width is smaller than that of the display section, and a cord-holding section which is included in the end of the neck section, cord-holding section includes a curved wall which has an opening as seen from the longitudinal direction of the neck section.

Abstract: An identification display device which is provided in a work unit in which a plurality of work locations are arranged in rows, and which displays for identifying a designated location selected from the work locations, the identification display device includes a database which stores address information of the respective work locations; light-display section which is provided respectively on each of the work locations, and which emits a visible light which contains the address information of the work location in which the light-display section is arranged; a photoreceptor which transmits a photoreception signal which contains at least the address information contained in the light from the light-display section, when the light is received; and a confirmation section which receives the photoreception signal from the photoreceptor, and determines whether or not the address information contained in the photoreception signal matches the address information of the designated location obtained from the database.

Abstract: An identification display device which is provided in a work unit in which a plurality of work locations are arranged in rows, and which displays for identifying a designated location selected from the work locations, the identification display device includes a database which stores address information of the respective work locations; light-display section which is provided respectively on each of the work locations, and which emits a visible light which contains the address information of the work location in which the light-display section is arranged; a photoreceptor which transmits a photoreception signal which contains at least the address information contained in the light from the light-display section, when the light is received; and a confirmation section which receives the photoreception signal from the photoreceptor, and determines whether or not the address information contained in the photoreception signal matches the address information of the designated location obtained from the database.

Abstract: A port management table 2 which stores connectable terminal information indicating an upper limit value of the number of terminals connectable to each port A, B and C is provided in a MAC bridge 1. When address retrieving means 7 of an address learning section 3 receives packet information Hi at the ports A, B and C from terminals of a network, the address retrieving means 7 retrieves the port management table 2. When the upper limit number is satisfied, register number addition/subtraction 8 adds/subtracts the number na of registrations, and writes a transmission origin address of packet information received by address table updating means 9 in an address table 5.

Abstract: Provided is a packet communication apparatus capable of instantly transmitting information requiring urgency without lowering data transfer efficiency even during a communication. The packet communication apparatus comprises first and second packetization sections 8 and 9 for converting signals transmitted from signal processing sections 2 and 7 to packets of predetermined forms, priority packet interleaving means 10 for interleaving the packet from the second packetization section 9 in the packet from the first packetization section 8 even during a transmission of the packet from the first packetization section 8 when the packet from the second packetization section 9 is input thereto, and a transmitter 3 for transmitting the packet output from the priority packet interleaving means 10 to a packet transmission communication medium 4.

Abstract: In an optical communications device that generates picture optical signals and optical signals for data communication by wavelength division multiplexing, it is carried out to alter a signal pattern inserted between packet signals of the optical signals for data communication so that a frequency component of a modulation waveform of the signal pattern disperses. The signal pattern is generated by inputting outputs of a counter for counting up a sign bit into a coder adopting a designated coding method.

Abstract: Provided is a packet communication apparatus capable of instantly transmitting information requiring urgency without lowering data transfer efficiency even during a communication. The packet communication apparatus comprises first and second packetization sections 8 and 9 for converting signals transmitted from signal processing sections 2 and 7 to packets of predetermined forms, priority packet interleaving means 10 for interleaving the packet from the second packetization section 9 in the packet from the first packetization section 8 even during a transmission of the packet from the first packetization section 8 when the packet from the second packetization section 9 is input thereto, and a transmitter 3 for transmitting the packet output from the priority packet interleaving means 10 to a packet transmission communication medium 4.

Abstract: A port management table 2 which stores connectable terminal information indicating an upper limit value of the number of terminals connectable to each port A, B and C is provided in a MAC bridge 1. When address retrieving means 7 of an address learning section 3 receives packet information Hi at the ports A, B and C from terminals of a network, the address retrieving means 7 retrieves the port management table 2. When the upper limit number is satisfied, register number addition/subtraction 8 adds/subtracts the number na of registrations, and writes a transmission origin address of packet information received by address table updating means 9 in an address table 5.

Abstract: The communication system executes one-to-multi peer communications between a master station (A) and many salve stations (B1, B2) by using outgoing and incoming communication media (7, 4). The master station (A) includes a data transmission processor 1, a data reception processor 2, a receiving circuit 3, the incoming communication medium 4, a multiplexer 5, a transmission circuit 6, the outgoing communication medium 7, a delay measuring unit 8, a transmission timing calculator 9, a transmission permission signal generator 10, and a system controller 11. Communications are carried out with the slave stations (B1, B2) by using the outgoing communication medium 7, and delays (d1, d2) until the master station (A) are respectively measured. A transmission interval of signals for giving transmission permission to the slave stations is obtained. The signals for transmission permission are transmitted to the slave stations (B1, B2) based on the transmission interval.