Abstract: High-quality communication using Multicast is realized in wireless communication where re-transmission processing is performed. The present invention includes: a program distribution unit (100) for distributing a program using the Multicast communication; a first communication path (Y1) for transmitting the program distributed from the program distribution unit (100); first communication units (102a, 102b); user terminals (105a to 105h); and a second communication path (103) which is a communication path between the first communication unit (102a, 102b) and the user terminal and is also a wireless communication path where the re-transmission of a frame is performed, wherein the first communication unit (102a or 102b) selects a Multicast frame of a program requested by the user terminal (105a to 105h) from the first communication path (Y1), converts the selected Multicast frame into a Unicast frame, and transmits the converted Unicast frame to the user terminal (105a to 105h).

Abstract: The present invention is a flame-retardant polyester film including resin layers laminated on both surfaces of a polyester film, wherein the resin layer satisfies 15?(Wc1?Wc2)/Wc0×100?99 (where Wc0 represents the weight of the resin layer, Wc1 represents the weight of the resin layer after the temperature thereof is raised from 25° C. to 600° C. in air, and Wc2 represents the weight of the resin layer after the temperature thereof is raised from 25° C. to 800° C. in air), and has a non-flammable gas generating rate of 3 to 40 percent over the range of 180° C. to 450° C. The present invention provides a flame-retardant polyester film having an excellent flame retardancy, and adhesive tapes, flexible printed circuits, a membrane switch, a film heater, and a flat cable, each including the flame-retardant polyester film.

Abstract: The present invention aims at providing a conductive film having transparency and a high level of electrical conductivity, which is used for an electromagnetic interference film hardly causing a moiré phenomenon, and the like. To achieve the above-mentioned aim, the following invention is disclosed. A conductive film in which a conductive portion of a random network structure is present on at least one surface of a base film, a line width of the conductive portion composing the network structure is 30 ?m or less, an area of portions where the conductive portion is not present is 50% or more with respect to an area of the conductive film, and an average of ratios of a major axis length to a minor axis length of an area surrounded by the network of the conductive portion, in which the base film is exposed, is larger than 1 and is equal to or less than 3.5.

Abstract: The present invention is to provide a laminated polyester film with excellent adhesive properties for use in a laminating material, and the laminated polyester film is a film in which a resin layer including a polyester resin and a oxazoline-based cross-linking agent is laminated on at least one side surface of polyester film, diethylene glycol accounts for 40 mole % or more of all diol components constituting the polyester resin and the mass ratio of the polyester resin to the oxazoline-based cross-linking agent resin layer is within a range of 20/80 to 80/20. Furthermore, the present invention is to provide a flame-retardant polyester film in which a polyimide-including layer is laminated on both sides of the laminated polyester film and also a copper-clad laminated plate in which the flame-retardant polyester film is used, and also a circuit substrate in which the copper-clad laminated plate is used.

Abstract: A transmitting and receiving apparatus including a modulating circuit for modulating an input digital data; a first frequency converting circuit for converting a signal output from the modulating circuit into a signal of a predetermined frequency; an amplifying/branching circuit for amplifying and branching a signal output from the first frequency converting circuit; a second frequency converting circuit for converting a signal output from the amplifying/branching circuit, into a signal of a predetermined frequency; and a demodulating circuit for demodulating digital data from a signal output from the second frequency converting circuit.

Abstract: A signal distribution system has a transmission means of respectively allocating different frequencies to a plurality of signals and of transmitting the signals by utilizing the allocated frequencies and communication paths for transmitting the plurality of signals to be transmitted and a plurality of reception means of receiving signals to which the corresponding frequencies are allocated based on predetermined corresponding relationships from among the transmitted plurality of signals characterized in that wherein the corresponding relationships are corresponding relationships between each of the frequencies and each of the reception means that have been predetermined based on substantial distances between the transmission means and each of the reception means along the communication paths.

Abstract: The present invention is to provide a laminated polyester film with excellent adhesive properties for use in a laminating material, and the laminated polyester film is a film in which a resin layer including a polyester resin and a oxazoline-based cross-linking agent is laminated on at least one side surface of polyester film, diethylene glycol accounts for 40 mole % or more of all diol components constituting the polyester resin and the mass ratio of the polyester resin to the oxazoline-based cross-linking agent resin layer is within a range of 20/80 to 80/20. Furthermore, the present invention is to provide a flame-retardant polyester film in which a polyimide-including layer is laminated on both sides of the laminated polyester film and also a copper-clad laminated plate in which the flame-retardant polyester film is used, and also a circuit substrate in which the copper-clad laminated plate is used.

Abstract: A transmitting and receiving apparatus including a modulating circuit for modulating an input digital data; a first frequency converting circuit for converting a signal output from the modulating circuit into a signal of a predetermined frequency; an amplifying/branching circuit for amplifying and branching a signal output from the first frequency converting circuit; a second frequency converting circuit for converting a signal output from the amplifying/branching circuit, into a signal of a predetermined frequency; and a demodulating circuit for demodulating digital data from a signal output from the second frequency converting circuit.

Abstract: A transmitting and receiving apparatus including a modulating circuit for modulating an input digital data; a first frequency converting circuit for converting a signal output from the modulating circuit into a signal of a predetermined frequency, an amplifying/branching circuit for amplifying and branching a signal output from the first frequency converting circuit; a second frequency converting circuit for converting a signal output from the amplifying branching circuit, into a signal of a predetermined frequency; and a demodulating circuit for demodulating digital data from a signal output from the second frequency converting circuit.

Abstract: The present invention is a flame-retardant polyester film including resin layers laminated on both surfaces of a polyester film, wherein the resin layer satisfies 15≦(Wc1−Wc2)/Wc0×100≦99 (where Wc0 represents the weight of the resin layer, Wc1 represents the weight of the resin layer after the temperature thereof is raised from 25° C. to 600° C. in air, and Wc2 represents the weight of the resin layer after the temperature thereof is raised from 25° C. to 800° C. in air), and has a non-flammable gas generating rate of 3 to 40 percent over the range of 180° C. to 450° C. The present invention provides a flame-retardant polyester film having an excellent flame retardancy, and adhesive tapes, flexible printed circuits, a membrane switch, a film heater, and a flat cable, each including the flame-retardant polyester film.

Abstract: The present invention relates to an ATP-regeneration reaction system comprising the steps of acting adenylate kinase on AMP to convert it into ADP and acting a polyphosphoric acid synthetase in the presence of a polyphosphoric acid compound to convert it into ATP and a polyphosphoric acid compound; an ATP-regeneration reaction system comprising the steps of acting a phosphotransferase on AMP in the presence of a polyphosphoric acid compound to convert it into ADP and then acting a polyphosphoric acid synthetase on the resulting ADP to convert it into ATP; and a method for detecting or inspecting adenine nucleotide or RNA and an ATP-amplification method, which make use of the foregoing regeneration system.

Abstract: A signal distribution system has

Abstract: There are provided a biodegradable resin for forming spectacle-molded body, being free of any problem on the skin upon contact with spectacles including it, being superior to corrosion resistance, and reducing the problem of disposal thereof after use, as well as a spectacle-molded body formed therefrom.The spectacle-molded body is prepared in a usual manner from aliphatic polyester type biodegradable resin, particularly polylactic acid resin. The spectacle-molded body includes nose pads (1a), rim (1b), earpieces (2b), temples (2a), and integrated bodies (1), (2) etc. of at least two of these members, as well as demonstration lenses.

Abstract: A state information communications system includes a bus and first and second terminal units of TV set and VCR connected to the bus. The first terminal unit includes control command generator for generating a control command, an information request command generator for generating an information request command, a first communications control for sending the control command and the information request command to the bus, and for receiving information data directed to the first terminal unit. The second terminal unit includes a second communications control for receiving control command and the information request command from the bus, a terminal device having tape deck which operates in response to the control command, a state code generator for generating a fixed state code when the tape deck is in a fixed state and a transient state code when tape deck is in a transient state changing from one fixed state to another fixed state.

Abstract: A communication system includes plural terminal apparatuses and a communication line monitor connected to a common a communication line. The monitor transmits to each of the terminal apparatuses a request signal for requesting each of the terminal apparatuses to transmit the data of a correspondence table, showing a relation between packet data and character codes corresponding thereto, when the monitor is initialized, receives the data of the correspondence table from each of the terminal apparatuses, and stores the received data of the correspondence tables in a memory. Thereafter, the monitor receives packet data transmitted through the communication line, coverts the received packet data into corresponding character codes by referring to the data of the correspondence tables stored in the memory, and displays the converted character codes on a display unit.

Abstract: A communication control method for use in a communication system including a plurality of communication control apparatuses interconnected through an information transmission path, each of the communication control apparatuses including a packet transmission/reception unit, a timer unit and a controller unit. When a first communication control apparatus has become unable to perform communication due to accidental power-off or a power supply failure or the like in the course of communication with a second communication control apparatus (which has been brought into a locked state by the first communication control apparatus), the invention prevents the second communication control apparatus from being left permanently in the locked state.

Abstract: In cases where a first communication control unit locks a second communication control unit to communicate with the second unit, the first unit stores a data representing a time remaining until the locking of the second unit is released. In these cases, the second unit stores a data representing an address of the first unit as a lock address corresponding to an address of a unit which locks the second unit. In cases where a third communication control unit tries to communicate with the second unit and fails the communication with the second unit, the third unit connects with the second unit and reads out the data representative of the lock address from the second unit, and then the third unit connects with the first unit in response to the lock address and reads out the data representative of the lock remaining time from the first unit. The third unit retries to communicate with the second unit after the lock remaining time elapses.

Abstract: An information transmission system having a plurality of communication control units connected to one another through an information transmission path in a communication network comprises devices for collectively transmitting and collecting broadcasting information to and from selected plural communication control units by sending one information message.

Abstract: Messages are transmitted via a gateway between terminal equipments in different communication networks. The message includes a source address, a destination address, a first header information set, at least one data block, and an end code. The source address corresponds to the terminal equipment or the gateway from which the message is transmitted. The destination address corresponds to the terminal equipment or the gateway to which the message is directed. The first header information set has routing information related to the terminal equipments between which the messages are transmitted. The data block includes a second header information set and a command. The second header information set has routing information related to sections of the terminal equipments between which the messages are transmitted. The command is given to the section of the terminal equipment to which the message is directed.