摘要:
A data communication method in which a transmitting station divides data into a plurality of data blocks and transmits the data blocks in parallel through a plurality of communication lines, and a receiving station receives the data blocks transmitted from the transmitting station through the plurality of communication lines and composes the data blocks into original data. In the data communication method, it is detected that a new transmission request is present during a parallel data transmission through a plurality of communication lines, one or more of the communication lines are released to continuously use the remaining communication lines for the parallel data transmission in response to the detected new transmission request, and a new data transmission is performed through the released communication line or lines.
摘要:
When a no-communication state is detected for a predetermined time of time during communication in response to an interrupt designation to or from an apparatus on the other end of the line, an operation of a time monitoring timer for terminating the communication is interrupted. The time monitoring timer is restarted in response to a restart designation. Therefore, communication can be continued without interrupting an interrupt/restart service provided by, e.g., an ISDN due to a time-out error. When a trouble which disables communication occurs during communication, an interrupt service is requested to a network. When the trouble which disables communication is recovered, a restart service can be requested to the network. In this case, communication can be normally restarted without being accidentally terminated intermediately.
摘要:
A facsimile apparatus processes a predetermined signal from a second external apparatus by means of correlating a first external apparatus with the second external apparatus if the facsimile apparatus is communicating with the first external apparatus when the second external apparatus transmits the predetermined signal to the facsimile apparatus. The signal is used for the operative connection between the facsimile apparatus and the second external apparatus. According to the present invention, the second external apparatus is prevented from frequently transmitting the predetermined signal to the facsimile apparatus. The present invention is applicable to a facsimile apparatus used for an integrated digital network.
摘要:
A communication terminal device connected to a communication network via a plurality of information channels used for transfer of information such as line switching information or packet switching information and a signal channel used for control of calling an objective communication terminal. In the device, two CODECs are provided in two corresponding information channels among information channels and analog sources such as a handset and a communication function control unit operative in a G3 facsimile mode for encoding and converting switching information, supplied from the analog sources to the information channels, to a digital signal, and decoding and converting switching information received from the information channels, to analog signals. Analog switches are provided between the analog sources and the CODECs to switch among the analog switches and these CODECs to send and receive signals to and from the analog sources and the CODECs. Thus, simultaneous communication of image information (G3 mode)/image information (G4 mode), image information (G3 mode)/voice information, and voice information/voice information is possible depending on the aspect in which the analog switches are switched.
摘要:
A communication device includes: a communication control section; a variable resistor; a voltage detecting section; and a resistance value adjusting section. The communication control section performs control necessary for facsimile communication. The variable resistor is arranged between two line-connecting terminals, each of the line-connecting terminals is for connecting a telephone line. The voltage detecting section detects a line voltage of the telephone line to which the variable resistor is connected under closed state of the telephone line. The resistance value adjusting section changes a resistance value of the variable resistor. When the changed resistance value of the variable resistor becomes a standard resistance value to be a voltage value where the line voltage detected by the voltage detecting section is capable of the facsimile communication, the resistance value adjusting section sets the resistance value of the variable resistor to a resistance value for the facsimile communication.
摘要:
A video conversation/monitoring system, having a remote monitoring function and a remote peripheral device control function in addition to a video-phonic conversation function, includes a center station linked to multiple end stations through an ISDN network. The center station includes a video conversation/monitoring unit, a conversation camera, a monitor screen, a conversation microphone, a conversation speaker, a system controller, a facsimile, and an ISDN line terminating unit. Each end station includes a video conversation/monitoring unit, a system controller, a monitoring camera, a conversation camera, a conversation microphone, a conversation speaker, a sending key set for making calls, a first notification device, a second notification device, a detection device, a facsimile, and an ISDN line terminating unit. Based on the remote monitoring function of the monitoring camera and the remote control function of the system controller for switching between the monitoring camera and the conversation camera, various guidance services are provided in addition to the video-phonic conversation service. Further, the system may be incorporated within an integrated unit which can easily be installed on a desk-top. The ability of the end stations to be adapted to include various state detection devices allows the system to perform image-based and state monitoring in addition to its conversation function.
摘要:
A communication apparatus capable of transmission and reception simultaneously through a plurality of communication channels of an ISDN basic interface has a communication mode which leaves at least one of the plurality of communication channels free. If this mode has been set, transmission or reception is allowed when this one communication channel among the plurality thereof is made free for the transmission or reception.
摘要:
Apparatus for sending and receiving both analog and digital information from a single information transmission medium. The apparatus includes a core processor (200), including a digital signal processor (DSP) (212) or a CPU/DSP, in communication with an integrated services digital network (ISDN) interface (204). The core processor (200) also may be in communication with a personal computer (PC) (202). The invention also is directed to a related method, including a series of modules.
摘要:
Data communication is started when a first B channel is established between a source terminal and a destination terminal. Immediately before or after the start of a data transmission phase, the destination terminal is called a second time so that a second B channel may be established. Immediately before or after the data transmission phase, the use of one of the B channels is terminated. Accordingly, time required for data communication can be reduced.
摘要:
A communication terminal apparatus has an interface structure of nB+D (n.gtoreq.2, B: channel for transfer of user information, D: channel for transfer of control information) and is connected to a digital line network. A reception refusal for m (n.gtoreq.m) of the n user information transfer channels is registered. When the reception refusal has already been registered, the reception of the user information transfer channels of (n-m+1) or more is refused. Thus, inconvenience from all of the lines being in use for call reception and a new call generation cannot be performed, is prevented.