摘要:
An image transmission system in which when each of a plurality of image signals is transformed into compressed image data compressed at an image compressing portion, the image data are assembled to cells at a cell assembly portion, and the cells from the cell assembly portion are switched at a switching portion, a band controller controls the cell assembly portion so that a band of a transmission line has a value lower than a total band required for a simultaneous transmission of each of the image data. Also, a network controller for controlling band controllers or compression rate controllers at each of communication nodes on a network is provided. Moreover, a sensor which detects a change of an event to control the band controller or the compression rate controller is provided.
摘要:
A method for supervising and controlling ATM traffic, which uses idle cells transferring traffic information to manage a network, comprising steps of a first step for mapping traffic information in the information field of an idle cell and transferring said idle cell to other communication nodes, a second step for performing the operation of traffic control in accordance with the contents of said traffic information included in said idle cell on the receiving side of said other communication nodes, and a third step for assembling a new idle cell including said traffic information of received idle cell and/or new traffic information on said receiving side of communication nodes and transferring said new idle cell from said receiving side of communication nodes to other communication nodes.
摘要:
An apparatus for supervising and controlling ATM traffic, and which collects traffic information, including a cell detecting unit for outputting a cell detecting signal whenever detecting a user information cell flowing through an ATM switch unit, an idle cell detecting unit for outputting an idle cell detecting signal whenever detecting an idle cell flowing through an ATM switch unit, a cell counting unit for counting the cell detecting signals output from the cell detecting unit, an idle cell counting unit for counting the idle cell detecting signals output from the idle cell detecting unit, an idle cell rate detecting unit for detecting an idle cell rate from both counts output from the cell counting unit and the idle cell counting unit at regular intervals, and a control unit for performing the operation of traffic control in accordance with the idle cell rate provided from the idle cell rate detecting unit at regular intervals.
摘要:
In a VPI and VCI assignment system in an ATM system having a plurality of nodes and terminals, each of the nodes including a conversion unit which generates ATM cells from data sent from one of the terminals, and a node management unit which manages a corresponding one of the nodes, a management unit assigns VPIs and VCIs to calls and manages information concerning VPIs and VCIs currently assigned to the calls and idle VPIs and VCIs. An assignment requesting unit, which is provided in each of the nodes and connected to the management unit, requests the management unit to assign a VPI and a VCI to a call received from one of the terminals. An assignment cancelling unit, which is provided in each of the nodes and connected to the management unit, requests the management unit to cancel the VPI and VCI assigned to the call in response to an end of a communication related to the call.
摘要:
A video information server system which makes it possible for a party to remotely control any of a plurality of video information server apparatuses holding a plurality of types of video information different in type from each other through a communication network and thereby easily obtained desired video information, the system being provided with a video information server center including a plurality of video information server apparatuses and a center control equipment for selecting one of these apparatuses in accordance with a request from a request terminal and sending the video information of the request and the central control equipment being provided with a common management file for recording various data for converting requests from terminals compatible with all of the plurality of video information server apparatuses into requests corresponding to the individual apparatuses.
摘要:
In a congestion control method adapted to a communications system having a network, a terminal and a terminal adapter which is provided between the network and the terminal and interchanges a first frame format handled by the network and a second frame format handled by the terminal, the terminal adapter receives a signal sent in the first frame format via the network and detects whether or not the signal includes congestion notification information indicating occurrence of a congestion in the communications system. The terminal adapter then sends a signal in the second frame format including first notification information to the terminal. The terminal adapter then performs a predetermined control process for recovery from the congestion when the terminal receives the signal in the second frame format.
摘要:
In an ATM cell assembling and disassembling method for a communications network having first and second communications nodes, HDLC data is transferred from a first terminal to the first communications node via a first transmission line, the HDLC data conforming to an HDLC format. It starts to assemble, in the first communications node, at least one cell from the HDLC data when data which is contained in the HDLC data and equal to one cell has been received. Then the above at least one cell of ATM data is transferred from the first communications node to the second communications node. Disassembly is started, in the second communications node, of the above at least one cell of ATM data to thereby generate original HDLC data when a fluctuation compensation time has elapsed after a first cell of ATM data among the above-mentioned at least one cell of ATM data is received by the second communications node. The fluctuation compensation time is based on a maximum fluctuation time of a route connecting the first and second communications nodes to each other as well as a bit rate of the first transmission line. Finally, the original HDLC data is transferred to a second terminal from the second communications node via a second transmission line.
摘要:
An apparatus for supervising and controlling ATM traffic, and which collects traffic information, comprises a cell detecting unit for outputting a cell detecting signal whenever detecting a user information cell flowing through an ATM switch unit, an idle cell detecting unit for outputting an idle cell detecting signal whenever detecting an idle cell flowing through an ATM switch unit, a cell counting unit for counting the cell detecting signals output from the cell detecting unit, an idle cell counting unit for counting the idle cell detecting signals output from the idle cell detecting unit, an idle cell rate detecting unit for detecting an idle cell rate from both counts output from the cell counting unit and the idle cell counting unit at regular intervals, and a control unit for performing the operation of traffic control in accordance with the idle cell rate provided from the idle cell rate detecting unit at regular intervals.
摘要:
An apparatus for extracting feature information from each of a plurality of electronic documents that constitutes a group of documents, for each of a plurality of viewpoints includes an extracting unit that extracts feature information from each of the electronic documents for each of the viewpoints, a calculating unit that calculates a score for each of the viewpoints with respect to the feature information that is extracted from more than one viewpoint, and a determining unit that determines the viewpoint for the feature information that is extracted from more than one viewpoint, based on the score calculated.
摘要:
A method for supporting activities of a sales promotion and an advertisement for contents performed by a contents provider through a mass-media institution includes receiving first contents information provided by the contents provider; receiving request information for use of contents information from the mass-media institution; extracting second contents information that corresponds to the request information from among the first contents information; transmitting the second contents information to the mass-media institution; receiving usage information on a record of an actual use of the second contents information by the mass-media institution; and calculating a cost to be paid to the mass-media institution based on the usage information.