摘要:
The clock demodulator 25 continually demodulates the clock signal of the control CPU 7 transmitted from the clock modulator 10 of the center S. The terminal control CPU 23 performs processes such as transmission and reception of data with the demodulated clock signal as a reference clock. The time required to synchronize the clocks of the CPUs 7 and 23 is eliminated. Transmission and reception of data is executed quickly as soon as right of transmission is transferred to a terminal.
摘要:
In the karaoke system 1, a center 3 is connected to a plurality of karaoke terminals 5 by a coaxial cable 7. The center 3 divides the karaoke song data stored in the memory device 13 over several channels and transmits all the karaoke song data within a fixed time period in succession to the karaoke terminals 5 via the coaxial cable 7. This operation is performed regardless of whether or not a song is requested from one of the karaoke terminals 5. Whether the karaoke data transmitted in succession is data of a requested song is determined by the control portion 41 of a karaoke terminal 5. If so, karaoke performance processes are performed wherein the karaoke data is reproduced and the orchestral accompaniment and lyric image is outputted.
摘要:
In a karaoke system, a central terminal and a plurality of karaoke terminals are connected by a coaxial cable. A polling modem modulates a polling signal to a predetermined channel signal and transmits it to a karaoke terminal and also receives a response signal (signal for responding as to whether a song has been requested) transmitted from the karaoke terminal in response to the polling signal. When a song is requested, the data transmission control portion retrieves the karaoke song data of the requested song from the memory, modulates it via the data transmission modem into an alternating current signal that differs from the channel of the polling signal, and transmits it to the karaoke terminal.
摘要:
In a data transmission system, a center and a plurality of terminals are connected by a coaxial cable. The center is controlled by a server to transmit mode sense polling signals in succession every predetermined time (for example every 30 seconds) to all of the karaoke terminals connected to the center. The center determines whether each terminal is in a karaoke mode or not based on the mode response signal transmitted from each terminal in response to the mode sense polling signals. The center then transmits request polling signal only to terminals determined as being in the karaoke mode, confirms whether a request for a song has been made, and transmits karaoke data to those terminals that have a request.
摘要:
A node device which participates in an overlay network formed by participation of all or part of a plurality of node devices which are connected to each other via a communication device. The node device includes a search information transmission device, a reply information receiving device, a communication load information device, a communication load comparison device, a node selection device and a participation request information transmission device. The search information transmission device transmits search information to search a node device transmitted to an information processing device connected to the communication device. The receiving device receives information replied from the plurality of node devices. The comparison device compares information regarding communication load in each of the communication routes. The selection device selects a node device on the basis of comparison result by the comparison device. The participation request information transmission device transmits the participation request information to the selected node device.
摘要:
In a first node in a system having nodes connected to each other as a network, request information including identification information and request number of location information indicating a location in the network of information saving nodes is transmitted to a second node. In the second node, the location information and identification information are saved. At least the location information whose number corresponds to the request number is transmitted to the first node when the number of the saved location information meets the request number. Otherwise, the location information whose number corresponds to the number of the saved location information is transmitted to the first node. The received request information is transferred when the second node itself is not a management node, to a node interposed between the second node and the management node, or to the management node when there is no node therebetween.
摘要:
A node device which participates in an overlay network formed by participation of all or part of a plurality of node devices which are connected each other via a communication means, including: a search information transmission means for transmitting search information to thereby search a node device transmitted to an information processing device connected to the communication means; a reply information receiving means which is a plurality of node devices and receives reply information replied from the plurality of node devices, a communication load information obtaining means; a communication load comparison means for comparing information regarding communication load in each of the communication routes; a node device selection means for selecting a node device on the basis of comparison result by the communication load comparison means; and a participation request information transmission means to transmit the participation request information to the selected node device.
摘要:
Providing a charging information generating apparatus, a charging information generating process program, a consideration information generating apparatus, a consideration information generating process program, and the like capable of generating reliable and certain charging information or consideration information more efficiently. The apparatus includes; a log obtaining means for obtaining a log recorded in at least two nodes out of first, second, and third nodes; a log consistency determining means for determining consistency of the at least two logs obtained; and a charging information generating means, when it is determined that the logs have consistency, for generating charging information to the user of the first node.
摘要:
Providing a connection mode setting apparatus, a connection mode setting method, a connection mode control apparatus, a connection mode control method, and the like realizing shorter time of fining an optimum connection destination at the time of connection for participation/withdrawal to/from the system since network topology itself constructing the system clearly shows that the bandwidths of paths attached to nodes constructing the system are wide at the higher hierarchical level and narrow at a lower hierarchical level, and capable of improving communication performance over a wide range of the system without exerting an adverse influence on the whole system even in the case where resume operation or the like accompanying reproduction of contents data after connection is performed. A connection mode setting apparatus sets a mode of connection among a distributing device for distributing distribution information and a plurality of receiving devices for receiving the distribution information provided in a tree type distribution system in which the distributing device is positioned at the highest hierarchical level, the plurality of receiving devices form a plurality of hierarchical levels, the devices are connected in a tree shape via communication paths, and the distribution information distributed by the distributing device is sequentially transferred from the receiving device at the high hierarchical level to the receiving device at the lower hierarchical level. And the apparatus includes effective bandwidth information obtaining means for obtaining effective bandwidth information indicative of an effective bandwidth of each of the communication paths attached to the receiving devices so that each of the receiving devices is connected to the receiving device or the distributing device at the higher hierarchical level; effective bandwidth comparing means for comparing the effective bandwidths of the communication paths; and connection mode setting means for setting a mode of connection among the devices on the basis of a result of comparison of the effective bandwidth comparing means.
摘要:
A connection state control device is provided that can promptly perform a reproducing operation by smoothly switching channels at each node and reduce the load on the management server in a case where operations are performed so as to sequentially change distribution information to be received at each node in a network system having a tree structure. A node receives content being distributed over a network, and performs an operation of reproducing the received content. When the node is to receive different content being distributed over a different network, the node is connected to the different network. After that, the node receives and reproduces the different content. The node continues to receive the original content but suspends the operation of reproducing the original content after connected to the different network.