JPH08125802A - Interface device for facsimile radio equipment - Google Patents

Abstract

PURPOSE: To facilitate the revision of delay time setting by providing a delay means reading and delaying a digital identification signal-(DIS) from a memory in a timing set freely to the interface device so as to eliminate the limitation in the setting of delay time. CONSTITUTION: A facsimile equipment 1 of a reception station receiving a CED (called station identification) from a transmission station sends a DIS to the transmission station, and the DIS is fed to a memory circuit 34 via a hybrid circuit 31. That is, the DIS sent from the facsimile equipment 1 is written once in a memory circuit 34a and read from the memory in a prescribed timing and sent to a radio equipment 2. Since the read timing is freely set by a CPU (by using a clock pulse and a clock pulse counter or the like), no limitation of the setting time is imposed and the setting time is easily revised.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile radio interface device which is connected between a facsimile and a radio when a general-purpose G3 facsimile is used in a PressTalk radio line.

[0002]

2. Description of the Related Art When performing facsimile communication over a PressTalk wireless line, a transmission signal is output from the wireless device after the press signal of the wireless device is turned on in order to ensure the accuracy of communication at both the transmitting station and the receiving station. It is stipulated that a predetermined delay time (t) is provided before the operation. FIG. 3 is a diagram showing a timing regulation when performing facsimile communication on the PressTalk wireless line. (T) shows a transmission signal (FAX Tx) from the wireless device after the press signal of the wireless device is turned on.
x SIGNAL) output delay time. Therefore,
Conventionally, when performing facsimile communication over a PressTalk wireless line, an interface device is connected between the facsimile and the wireless device to delay the transmission signal by time (t).

FIG. 4 is a block diagram for explaining a conventional interface device of this type connected between a facsimile and a radio. In the figure, 1 is a facsimile, 2 is a radio, and 3 is an interface. Device, 31
Is a hybrid circuit, 32 is a signal delay circuit, and 33 is a press control circuit. FIG. 5 is a time chart diagram for explaining the operation of the conventional apparatus. Three
An example of the standard procedure of 0 is shown.

Next, the operation will be described. As shown in FIG. 4, the conventional interface device 3 is configured to delay and transmit all transmission signals by a signal delay circuit 31 using hardware. For example, CE from the transmitting station
The receiving station that receives D (called station identification) (not shown) sends a DIS to the transmitting station as shown in FIG.
(digital identifi-cation signal) is returned, but the DIS transmitted from the facsimile 1 is the hybrid circuit 3
At the same time as being sent to the signal delay circuit 32 via 1, it is also sent to the press control circuit 33, and the press control circuit 33 turns on the press signal of the wireless device 2 by this DIS.

Further, the DIS sent to the signal delay circuit 32
Is transmitted to the wireless device 2 while being delayed by the signal delay circuit 32 for a predetermined time (t), and the wireless device communicates with the wireless device of the transmitting station. The transmitting station sends the received DIS as it is to the facsimile, but the receiving station The interface device on the side is DIS
When the transmission of is completed, the press control circuit 33 detects this and turns off the press signal of the wireless device 2. Less than,
Similarly, DCS (digital command sig) is sent from the transmitting station side.
nal), TCF (training check), picture signal, EOP (end o)
Transmission signals such as f procedures) and DCN (disconnect) are output with a predetermined delay time (t), and CFR (confirmation to receive) and MCF (message c) from the receiving station side.
A transmission signal such as on confirmation) is output with a predetermined delay time (t).

[0006]

As described above, the conventional facsimile radio interface device uses a signal delay circuit using hardware to transmit all transmission signals including image signals at both the transmitting station and the receiving station. Since the delay is adopted, it is difficult to take a long delay time because it is necessary to digitally delay by PCM or the like when delaying in units of seconds. Moreover, there is a problem that the set delay time (t) cannot be easily changed.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a facsimile radio interface device capable of eliminating the restriction of delay time setting and easily changing the restriction.

[0008]

SUMMARY OF THE INVENTION A facsimile radio interface device according to the present invention is used from a press signal turned on to a transmission signal when a facsimile communication is performed using a press talk radio line. In the facsimile radio interface device connected between the facsimile and the radio to set the delay time, select the signal passing through the interface in the interface device, write it once in the memory, and set it freely. It is characterized in that a delay means for delaying by reading from the memory at a timing is provided and the delay time is set by using this delay means.

Further, the device as the receiving station delays only the transmission signal sent from the facsimile to the wireless device by the delay means, and the device as the transmitting station only receives the reception signal sent from the wireless device to the facsimile by the delay means. The delay time is set without delaying the writing / reading of the image signal to / from the memory.

[0010]

The facsimile radio interface device of the present invention, having the above-mentioned configuration, allows the CPU to freely set and change the delay time. Also,
The device as the receiving station delays only the transmission signal sent from the facsimile to the radio by the delay means, and the device as the transmitting station delays only the reception signal sent from the radio to the facsimile by the delay means. The above delay time can be set only by writing / reading the control signal to / from the memory.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram for explaining an interface device of the present invention. In the figure, the same symbols as in FIG. 4 indicate the same or corresponding parts. In order to make the explanation easy to understand, the interface device 3 of the present invention shown in FIG. 1 stores a transmission signal from the facsimile 1 in a memory once and then outputs it to a radio device, and a reception circuit received by the radio device 34a. A memory circuit 34b for storing the signal in the memory once and then outputting it to the facsimile 1, and changeover switches 35a, 35b for determining whether to directly transmit the signal or transmit the signal via each of the memory circuits 34a, 34b. However, in the actual apparatus configuration example, for example, a CPU and a modem (both not shown) are used, and the press control circuit 33 also uses the CPU. FIG. 2 is a time chart diagram for explaining the operation of the device of the present invention. It is a figure which shows an example of the standard procedure of 30.

Next, the operation will be described. When the interface device of the present invention serves as a transmitting station, the transmitting signal is sent to the wireless device 2 as it is without delay, and the receiving signal is delayed and sent to the facsimile machine 1 to serve as a receiving station.
The changeover switches 35a and 35b are set so that the transmission signal is delayed and transmitted to the wireless device 2, and the reception signal is directly transmitted to the facsimile 1 without being delayed. That is, the interface device 3 shown in FIG.
a and 35b are set as receiving stations.

In FIG. 2, CED (calle
The facsimile 1 of the receiving station, which has received the d station identification), sends a DIS (digital identification) to the transmitting station.
The DIS signal transmitted from the facsimile 1 is input to the memory circuit 34 (a) via the hybrid circuit 31. That is, the DIS sent from the facsimile 1 is once stored in the memory circuit 34a by the CPU.
, Is read from the memory at a predetermined timing, and is sent to the wireless device 2 (this operation is shown in FIG. 2). Since this read timing can be freely set by the CPU (by the clock pulse and the pulse counter, etc.), the set time is not restricted and the set time can be easily changed.

Further, the CPU operates the press control circuit 33 a predetermined time (t) before the read timing to turn on the press signal of the wireless device 2. Since the time for turning on the press signal can be freely set by the CPU, the interface device of the present invention can be a device in which the delay time (t) shown in FIG. 3 can be freely set and changed.

Next, the DIS of the receiving station is transmitted to the transmitter of the transmitting station, the DIS is written once in the memory circuit 34 (b) of the interface device of the transmitting station, read out at a predetermined timing, and transmitted. It is sent to the facsimile 1 of the station (this operation is shown by in FIG. 2). This read timing can also be freely set by the CPU, and the CPU operates the press control circuit 33 a predetermined time (t) before this read timing to turn on the press signal of the wireless device 2, thereby transmitting the station. The facsimile 1 receives the DIS and receives the DCS (digital command signal) and the TCF (trac).
inching check), the DCS and TCF are transmitted to the receiving station without delay (shown in FIG. 2),
It is sent to the facsimile of the receiving station without delay (shown in FIG. 2), but when the DIS is read out as shown in FIG.
The delay time (t) shown in is set and DCS and TCF are transmitted, and this delay time (t) can be freely set and changed by the CPU.

Hereinafter, a transmission signal from the receiving station, for example, CF
R (confirmation to receive), MCF (message confi
rmation) is delayed by the interface device of the transmitting station and the receiving station, whereby the predetermined delay time (t) shown in FIG. 3 can be set in the transmission signal transmitted from both the transmitting station and the receiving station. By performing such control, the above-described delay time (t) can be set without writing the image signal in the memory even when the transmitting station transmits the image signal.

[0017]

As described above, in the facsimile radio interface device of the present invention, the delay time defined between the time when the press signal of the radio is turned on and the time when the transmission signal is transmitted is time-constrained. There is an effect that it can be set without accompanying and the change can be easily performed.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an interface device of the present invention.

FIG. 2 is a time chart diagram for explaining the operation of the device of the present invention.

FIG. 3 is a diagram showing a timing regulation of press talk radio.

FIG. 4 is a diagram for explaining a conventional interface device.

FIG. 5 is a time chart diagram for explaining the operation of the conventional device.

[Explanation of Codes] 1 Facsimile 2 Wireless device 3 Interface device 33 Press control circuit 34a, 34b Memory circuit 35a, 35b Changeover switch

Claims (2)

[Claims] 1. When a communication is carried out by facsimile using a PressTalk wireless line, a delay time between the transmission of a transmission signal and a press signal being turned on is set between the facsimile and the wireless device. In the facsimile radio interface device connected to, the interface device is provided with a delay means for selecting a signal passing through the interface, writing it once in the memory, and reading it from the memory at a freely set timing and delaying it. A facsimile radio interface device, characterized in that the delay time is set by using means. 2. The device as the receiving station delays only the transmission signal sent from the facsimile to the wireless device by the delay means, and the device as the transmitting station delays only the reception signal sent from the wireless device to the facsimile by the delay means. 2. The facsimile radio interface device according to claim 1, wherein the delay time is set by delaying without writing / reading an image signal to / from the memory.