JPH04268852A - Communication equipment - Google Patents

Abstract

PURPOSE:To obtain communication equipment power supply to which is cut after communication is finished normally even if the power switch of this communication equipment is turned off during the communication. CONSTITUTION:A power control part 3 supplies power to terminal equipment 1 through a primary side power line 6 and a secondary side power line 7 in response to a power-on signal 9 from the power switch 4, and simultaneously, it supervises the communication state of the terminal equipment 1 through a control line 8, and when the power switch 4 is turned off during the communication of the terminal equipment 1 with an opposite side terminal equipment 2, it continues to supply the power in that condition, and after the finish of the communication is confirmed, it stops the supply of the power. Accordingly, the power supply need not be cut after waiting for the communication to be finished after the finish of communication operation like in the past, and besides, the power supply is cut immediately after the finish of the communication.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to communication devices such as computer terminals, modems, and radios for transmitting data.

0002

2. Description of the Related Art FIG. 4 is a block diagram showing a conventional communication device. In the figure, 1 is a communication terminal device, 2 is a communication device at the other end of the communication terminal device 1, 4 is a power switch of the communication terminal device 1, and 5 is a block diagram showing a conventional communication device. A communication cable 6 connecting the communication terminal device 1 and the other party communication device 2 is a primary power line that supplies power to the communication terminal device 1 via the power switch 4.

Next, the operation will be explained. The communication terminal device 1 and the other party's communication device 2 exchange signals such as data and audio signals via a communication cable 5. Communication terminal device 1
When the power switch 4 provided at
The operation of the communication terminal device 1 becomes possible. Furthermore, when the power switch 4 is turned off, power is no longer supplied to the communication terminal device 1, and the communication terminal device 1 stops operating.

0004

[Problem to be Solved by the Invention] Since the conventional communication device is configured as described above, if the power switch 4 is turned off while the communication terminal device 1 is communicating data, the data being communicated will not be sent. Because a communication error occurred, the power switch 4 had to be turned off after confirming that the communication was completed. Therefore, when the communication is long, it is necessary to wait a long time until the communication is completed and then turn off the power switch 4 after the communication operation is completed. Furthermore, if the power switch 4 is turned off by mistake, there is a problem that a communication error may occur.

[0005] This invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a communication device in which even if the power switch of the communication device is turned off during communication, the power is turned off after the communication is normally completed. It is an object.

[0006]

[Means for Solving the Problems] A communication device according to the present invention, if it is in communication when the power switch is turned off,
The device is equipped with a power control section that turns off the power after confirming that the communication has ended.

[0007]

[Operation] The power control unit in the present invention monitors the communication status, and when the power switch is turned off during communication, continues to supply power until the communication is completed, and after the communication has ended normally, the power supply control unit monitors the communication status. control to turn off.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a communication terminal device, 3 is a power supply control unit provided in the communication terminal device 1, 4 is a power switch provided in the communication terminal device 1, and 6 is a primary unit that supplies power to the power supply control unit 3. A side power line 9 is a power-on signal output from the power switch 4, which instructs the power control section 3 to supply power to the communication terminal device 1. 7 is the power supply control section 3
8 is a control line that connects the communication terminal device 1 and the power supply control unit 3, 2 is the other party's communication device, and 5 is the communication terminal device 1 and the other party's communication device. This is a communication cable that connects the two.

Next, the operation will be explained.

[0010] The power supply control unit 3 always connects the primary power supply line 6
When a power-on signal is input by turning on the power switch 4, power is output to the secondary power line 7. As a result, the communication terminal device 1 operates and can communicate with the other party's communication device 2 via the communication cable 5. Here, when the power switch 4 is turned off during communication from the communication terminal device 1 to the other party's communication device 2, the power supply control unit 3 recognizes that the power on signal 11 is turned off, and communicates via the control line 8. Check whether the terminal device 1 is in communication, continue to supply power to the secondary power line 7 while it is in communication, and turn off the power when it is confirmed that the communication of the communication terminal device 1 has ended. supply will be stopped.

[0011] In the above embodiment, the power supply control section 3
After confirming that the communication terminal device 1 has completed the communication, the power supply to the secondary power line 7 is turned off, but instead of confirming the completion of the communication, a simple method is to use a timer to delay the communication by the time when the communication is expected to be completed. , the power supply may be turned off.

Further, as shown in FIG. 2, a transmission modem 10 having a buffer memory function is connected between the communication terminal device 1 and the other party's communication device 2, and the communication terminal device 1, the transmission modem 10, and the power supply control section 3 are connected to each other. In the case of a communication device composed of The control line 8 is connected to the transmission modem 10, and the configuration is such that it is possible to confirm the end of communication of the transmission modem 10.

Furthermore, as shown in FIG.
A communication device may be configured by further connecting a radio device 10 to the subsequent stage of 0, and the effect of the present invention is greater as the data transmission time becomes longer as in the case of a radio line.

[0014]

[Effects of the Invention] As described above, according to the present invention, even if the power switch of the communication device is turned off during communication, the power of the communication device is controlled so as not to be turned off until the communication is completed. Therefore, there is no need to confirm or wait for the end of communication after the end of the communication operation as in the conventional case, and advantages such as being able to turn off the power immediately after the end of communication can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a communication device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a communication device according to another embodiment of the invention.

FIG. 3 is a block diagram of a communication device according to yet another embodiment of the invention.

FIG. 4 is a block diagram showing a conventional communication device.

[Explanation of symbols]

1 Communication terminal equipment 2. Other party's communication device 3 Power control section 4 Power switch 9 Power on signal

Claims (1)

[Claims] Claim 1: A terminal communication device that communicates with a partner communication device; and a device that supplies power to the communication terminal device based on a power-on signal from a power switch and monitors the communication status of the communication terminal device during communication. A communication device comprising: a power control section that performs control to continue supplying the power when the power switch is turned off until the communication is normally terminated.