JPS63133747A - Communication equipment - Google Patents

Abstract

PURPOSE:To surely communicates with an equipment that a user really wants to communicate with in a desired time by setting time between one and another data communication equipments through the use of a control document and making the reservation of communication time. CONSTITUTION:When an originating side facsimile equipment 1 stores set time data and transmits the control document to the equipment 1 that the calling side facsimile equipment 1 really wants to communicate with, the other facsimile equipment of the equipment 1 receives the control document, and stores data on the equipment transmitting the document in a RAM 13 and the received set time in a set time supervisory part 20 as well. As the result of the supervision of a counting part 21 at a supervisory part 20, when it becomes set time, the currently communicating equipment is checked whether a reserved one or not. If not, the communication is stopped to restore the line, and the operation is ready for communications with the reserved equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to communication devices that are connected to each other via a public communication line and perform data communication, for example, CCITT's T,
This is related to communication equipment that is based on the 62 Recommendation.

[Prior Art] Conventionally, in data communication devices that have adopted the CCITT T.62 recommendation, such as facsimile machines, the receiving process is simply waiting for a call from the other party, and selecting the other party to communicate with. I couldn't even do it.

[Problems to be Solved by the Invention] For this reason, in conventional facsimile machines, etc., even if they are waiting for a call from the other party's machine with which they really need to communicate, they cannot respond to a call from another machine. As a result, the opportunity to communicate with a desired person is often lost.

[Means for Solving the Problems] The present invention has been made for the purpose of eliminating the above-mentioned problems, and as a means for solving the problems, the present embodiment has the following configuration.

That is, a clock means for counting the time, a setting means for setting arbitrary time information, a specifying means for specifying a partner device to communicate with after the time set by the setting means, and a clock time of the clock means is set by the setting means. The apparatus includes a determining means for determining whether or not the time has arrived, and a communication means for communicating only with the specified device designated by the specifying means when the determining means determines that the set time has arrived.

[Operation] In the above configuration, by setting a communication time in advance and communicating only with a desired party when the set time comes, it is possible to communicate with a device that truly requires communication without waiting time.

[Example] An example according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic diagram showing a facsimile communication network according to an embodiment of the present invention.

In FIG. 1, 1 to 4 are facsimile machines which are communication terminal devices, 5 is an exchange, and 6 is a public communication line which is a communication medium.

A detailed block diagram of the facsimile machine shown in FIG. 1 is shown in FIG.

In FIG. 2, 6 is the public communication line which is the communication medium shown in FIG. 1, and 11 is in charge of controlling the entire facsimile machine, including the communication control shown in the flowchart of FIG. Doru CPU, 12
is the ROM in which the program is stored, and 13 is the CPU
RAM for temporarily storing data used in I,
14 is a key input unit; 15 is a data input unit that reads image data on the document surface and converts it into a digital signal; 16 is a communication data memory that stores transmitted data or received data; and 17 is a data output unit that permanently displays data. , 18 communicates with other facsimile machines via line 6 and T of CCITT,
Data communications department that conducts data communications in accordance with the 62 recommendations, 1
9 is an expansion/compression unit that controls compression/expansion of image data; 2
21 is a set time monitoring unit that holds the set time data sent from another device and compares the held time with the time measured by the clock unit 21 to monitor whether the set time has been reached; This is a timekeeping section that measures the time. Further, 22 is a system bus.

The communication control of this embodiment having the above configuration will be explained below with reference to the flowchart of FIG.

In this embodiment, facsimile communication is performed using CCITT's T.62 recommendation.
Since the 62 Recommendation is well known, its explanation will be omitted.

In the above configuration, for example, the calling side facsimile device 1
When a call is made to the called facsimile machine 2 via the public communication network, unless the called facsimile machine 2 is in use due to the action of the exchange 5, the call is made to the called facsimile machine 2 via the public communication line 11, 12. and are connected to each other. Thereafter, a control document defined by T.62 can be sent in session layers up to the fifth layer according to the CCITT T.62 recommendation. Therefore, in this embodiment, this control document includes device data indicating the calling device and communication time setting data for reserving communication time as necessary.

The facsimile machine checks in step S1 whether or not there is a communication request, and if there is no communication request, it checks in step S2 whether there is a call from line 4. If there is no called, step S
1 and waits for a communication request or a called call.

Here, if there is a communication request, step S1 to step S
Step 3 instructs the data communication section 18 to make a call to the desired destination facsimile device. Then, in the subsequent step S4, communication is started and communication is performed up to the session layer.

Then, in the next step S5, it is checked whether or not a communication time has been reserved for the other party's device. If a communication time has been reserved, the process proceeds to step S6, where time setting data is stored in a control document and transmitted. Then, the data communication is terminated, and the process proceeds to step S10, where a communication termination process is executed.
The calling side sends a disconnection command, waits for a response command to be returned from the called side, and proceeds to step sit, instructs the data communication unit 18 to disconnect the lower layer, that is, open the line, and perform line restoration processing. Execute. After that, the process returns to step S1 and prepares for the next communication.

If it is determined in step S5 that there is no communication reservation, the process advances from step S5 to step S12, and data transmission/reception processing is executed in page units. Then, in step S13, it is checked whether all data transmission/reception processing has been completed, and if all data transmission/reception processing has not been completed, the process returns to step 512 again to continue data transmission/reception processing, and all data transmission/reception processing is completed. If so, proceed to step 310.

On the other hand, step S1. When a call is received from line 4 during the standby state in S2, the process proceeds from step S2 to step 315, where the line is connected and a response is made.In the subsequent step S16, a control document from the calling party is received, and the other party's control document is received. Device data is stored in RAM 12. Then, in step S17, it is checked whether the received control document includes a set time, that is, whether it is a time reservation.

In the case of time reservation, the process proceeds to step 318, stores the set reception time in the set time monitoring section 20, and proceeds to step 310. If the time has already been set here, check whether there is any overlap in the time to be set, and if there is a overlap, notify the called device to that effect, and set the overlap. By controlling to prevent this, the system can be made even more reliable.

If it is not a time reservation in step 317, step S2
0, and as a result of the monitoring by the set time monitoring section 20, if the set time has not arrived, the flow advances to step S21, where data transmission/reception processing is executed in page units. Then, in the following step S22, it is checked whether or not all the data transmission/reception processing has been completed, and if all data transmission/reception processing has not been completed, step S22 is performed.
Returning to step 20, the data transmission/reception process is continued, and if all the transmission/reception processes have been completed, the process advances to step SIO.

Here, if the set time monitoring unit 20 monitors the clock time of the clock unit 21 during the transmission/reception process and the set time has come, the process advances from step S20 to step S25, and the device currently communicating sets the time. If the communication is not with the reserved device, the process advances to step SIO, where communication with the currently communicating device is interrupted, the line is restored, and communication with the reserved device is resumed. Be prepared.

Here, in the case of communication with the reservation device, the process advances to step S28, and data transmission/reception processing is executed in page units.

Then, in the following step S27, it is checked whether all data transmission/reception processing has been completed, and if all data transmission/reception processing has not been completed, the process returns to step 526, where data transmission/reception processing is continued, and all data transmission/reception processing is completed. If so, step 32
Proceed to step B, and check the set time monitoring unit 2 set by the device.
The set time of 0 is cleared and the process proceeds to step S10.

As explained above, according to the apparatus of this embodiment, CCITT
A data communication device (facsimile device) that adopts the T.62 Recommendation can use a control document to set the time with another data communication device and reserve the communication time. By reliably communicating at the set time and performing the communication at the set time, an efficient data communication system can be achieved.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide an efficient communication device that can arbitrarily set a reservation for communication time and can reliably communicate with the other party at a desired time.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an embodiment of the present invention, FIG. 2 is a block diagram of a facsimile machine of the embodiment, and FIG. 3 is a communication control flowchart of the embodiment. In the figure, 1 to 4...Facsimile machine, 5...Switching machine, 6 Tatami...Line, 11...CPU, 12...ROM
. 13...RAM, 14...Key personnel department, 15...
Data human resources department, 16... Communication data memory, 17...
・Data output section, 18...Data communication section, 19...
Compression/expansion unit, 20... Setting time monitoring unit, 21...
This is the timekeeping section. Patent applicant Canon Co., Ltd. Figure 1

Claims (1)

[Claims] a clocking means for counting time; a setting means for setting arbitrary time information; a designating means for specifying a partner device to communicate with after the set time of the setting means; and a clock time of the clocking means set by the setting means Communication characterized by comprising a determining means for determining whether the time has arrived or not, and a communication means for communicating only with the designated device designated by the designated means when the determining means determines that the set time has arrived. Device.