JP2597476B2 - Facsimile transmitter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile transmitting apparatus having an automatic dial function and automatically transmitting a facsimile signal to a receiving facsimile apparatus.

<Related Art> In a facsimile system for transferring image information, a broadcasting device has recently been provided and a facsimile transmitter broadcasts image information (facsimile signal) in advance and a telephone number of a called subscriber to be broadcast. A method has been considered in which the facsimile information is automatically transmitted from the broadcast apparatus to the receiving facsimile apparatus after storing it in the apparatus. That is, the broadcasting device has a function of generating a called subscriber number, and the generated number is transmitted to the exchange to automatically connect to transmit the facsimile information. However, such a broadcasting device, that is, a facsimile transmission device,
Since the telephone number is automatically generated, there is a possibility that a wrong connection is made and a call is made not to the facsimile of the receiving side but to a general household. In addition, the calling by the broadcasting device is performed at midnight, taking into account the line charge and the like, so that an erroneous call is performed at midnight.

<Problems to be Solved by the Invention> The present invention has been made in view of the above-mentioned conventional disadvantages, and an object of the present invention is to provide a facsimile transmission device that detects an erroneous connection to a device other than a facsimile terminal.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a calling means for calling a called subscriber number stored in a memory, and a second means for detecting a polarity reversal of a line. 1 detecting means, second detecting means for detecting a specific signal indicating that the called side is a facsimile apparatus, and when detecting the specific signal coming from the calling party, the processing shifts to facsimile communication means. And control means for recognizing an incorrect connection when the calling party is in a hook-off state and cannot detect the specific signal for a certain period of time.

<Operation> With this configuration, the process proceeds to the facsimile communication procedure when the connection is normally made to the other party's facsimile apparatus, but when the connected party is not a facsimile terminal, the off-hook and facsimile confirmation signal are not detected. Because of the two conditions described above, it is possible to recognize that the control unit has erroneously connected to a device that is not a facsimile terminal,
Thereafter, appropriate measures can be taken.

<Embodiment> The drawing is a block diagram of a facsimile transmission apparatus according to an embodiment of the present invention. In the figure, 1 is a microprocessor, 2 is a timer, 2 'is a clock, 3 is a memory for storing a facsimile signal, 4 is a line, 5 is a network controller (hereinafter referred to as a network controller).
NCU), 6 is a line controller, 7 is a response detector, 8
Is a memory for storing the called subscriber number, 9 is a voice response device, and 10 is a modem. Note that a facsimile transmitter may be used instead of the memory 3.

The normal operation will be described. The clock 2 'starts the microprocessor 1 at a predetermined time, for example, 1:00 am.
In response to this activation, the microprocessor 1 reads out the called subscriber number from the memory 8 and supplies this number to the line controller 6. At the same time, the timer 2 is activated to start time monitoring. The line controller 6 supplies this number to the NCU 5.
The NCU 5 sends a dial pulse or a push button signal to the line 4, that is, an exchange (not shown), according to this number. The exchange reads out the called subscriber's terminal based on this signal. The facsimile terminal (receiver) of the called subscriber
When in the automatic reception mode, the call signal from the exchange "16
A known DC loop is formed by detecting a repetition signal of "Hz" and automatically enters a hook-off state. Thereafter, the facsimile receiver supplies a connection confirmation signal to the line and notifies the transmission device side.

The transmitting device recognizes that the facsimile receiver is automatically connected to the line by detecting and outputting this signal by the response detecting unit 7 constantly connected to the line.

That is, when the microprocessor 1 receives the detection output of the response detection unit 7, the microprocessor 1
Then, a facsimile signal is read from the memory 3 and supplied by a known method.

The line control unit 6 supplies the received facsimile signal to the modem 10 via the line 6b, modulates the signal with a predetermined modulation method, and
Send to U5. NCU 5 supplies this signal to the line. At this time, the timer 2 is cleared and is stopped.
On the other hand, if no response is made while the called side is in the hooked-off state, or if the calling signal is continuously transmitted, no detection output is obtained from the response detection unit 7. That is, the response detection unit 7
Means that when the ringing tone of 16 Hz is being sent,
Since a signal of 00Hz for 0.5 second ON state and 3 second OFF state is transmitted, a first detection circuit for detecting this signal and a second detection circuit for detecting the polarity reversal because the line polarity reversal occurs when the hook-off state occurs. 2 and a third detection circuit for extracting a connection confirmation signal having a constant frequency, and these three states are detected by the microprocessor 1 using two signal lines.
Output to After transmitting the telephone number, the microprocessor 1 constantly monitors the state of these two signal lines.

On the other hand, as described above, the timer 2 monitors the time after calling, and outputs a timeout signal to the microprocessor 1 when a predetermined time, for example, 10 seconds, elapses. The microprocessor 1 activates the voice response device 9 based on the time-out signal, when the state of the output signal line of the detection unit 7 indicates the hook-off state. In response to the start signal, the voice response device 9 supplies a voice signal indicating apology such as facsimile communication to the NCU 5, incorrect connection, telephone number of the inquiry destination, and the like, and outputs the signal to the line. Further, when the line is transmitting a call signal, the line controller 6 is notified that the line 4 is to be disconnected. As a result, the line controller 6 works on the NCU 5 to restore the line.

After terminating this process, the microprocessor 1 writes data indicating that it cannot be connected to the receiving facsimile machine in the area of the memory 8 where the incorrect telephone number is stored, and terminates the automatic transmission.

<Effect of the Invention> As described above, the present invention provides a calling means for calling a called subscriber number stored in a memory, a first detecting means for detecting a polarity reversal of a line, Second detecting means for detecting a specific signal indicating that the other side is a facsimile apparatus, and when detecting the specific signal coming from the calling party side, the processing shifts to facsimile communication means, while the calling party side is in a hook-off state. And control means for recognizing that the connection is erroneous when the specific signal cannot be detected for a certain period of time. With this configuration, when the facsimile apparatus is normally connected to the other party's facsimile apparatus, When the connected party is not a facsimile terminal, the control means is controlled by the facsimile terminal under two conditions of off-hook and no facsimile confirmation signal detection. Since it is possible to recognize that an erroneous connection has been made to a device that is not the end device, it is possible to take an appropriate action thereafter.

[Brief description of the drawings]

The drawings are block diagrams of one embodiment of the present invention. In the figure, 1 is a microprocessor, 2 is a timer, 3 is a memory, 8 is a telephone number memory, and 9 is a voice response device.

Claims (1)

(57) [Claims] 1. A calling means for making a call to a called subscriber number stored in a memory, a first detecting means for detecting inversion of a line polarity, and a specific signal indicating that the called side is a facsimile machine. And the second detecting means for detecting the specific signal arriving from the calling party side, and when the facsimile communication means is detected, the calling party side is in a hook-off state and cannot detect the specific signal for a certain period of time. Control means for recognizing an erroneous connection in such a case.