JP2538700B2 - False facsimile repeat prevention telephone - Google Patents

Description

TECHNICAL FIELD The present invention relates to a telephone having a facsimile compatible function.

[Prior Art] Conventionally, as a technology for eliminating the harmful effect when a facsimile signal is erroneously input to a telephone set on the telephone side, Japanese Patent Application Laid-Open No. Hei 1
As disclosed in Japanese Patent Laid-Open No. 216665, there is disclosed a technique of detecting a facsimile signal erroneously transmitted on the telephone side and disconnecting the connection between the telephone and the telephone line. This allows
This is to forcibly disconnect the telephone line, cause the facsimile side, which has erroneously sent the facsimile signal, to detect a line error and stop sending the facsimile signal.

[Problems to be Solved by the Invention] However, in the conventional technique, it is possible to temporarily stop an erroneously transmitted facsimile signal, but an erroneous facsimile signal is generated from a facsimile apparatus that automatically transmits a signal. It was not possible to prevent repeated transmission. In other words, due to the recent development of electronic technology, computers and large-capacity memories have been widely used for facsimile machines, and many facsimile machines that automatically repeat memory transmission until the completion of transmission have been used. . For this reason, if the telephone number is set incorrectly, a call may be repeatedly made to the wrongly set outgoing number, resulting in a nuisance call of unknown cause.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a telephone that solves the above-mentioned problems and prevents erroneous facsimile signals from being repeatedly transmitted.

[Means for Solving the Problem] As means for solving the above-mentioned object, the facsimile repeat prevention apparatus according to the invention of claim 1 repeats an error facsimile repeat connected to a telephone line as illustrated in FIG. A control signal receiving means for receiving a facsimile control signal and a message signal sent from the facsimile device via the telephone line.
Control signal transmitting means for transmitting the control signal and a predetermined facsimile control signal corresponding to the message signal to the facsimile device via the telephone line without storing the message signal received by the control signal receiving means. The summary is that

A facsimile repeat prevention telephone set according to a second aspect of the present invention is an error facsimile repeat prevention set telephone set connected to a telephone line, wherein a facsimile control signal and a message signal sent from a facsimile device via the telephone line are transmitted. The control signal receiving means for receiving the control signal and the predetermined control signal of the facsimile corresponding to the control signal and the message signal without storing the message signal received by the control signal receiving means via the telephone line. The gist of the present invention is to include a control signal transmitting means for transmitting to the.

[Operation] In the facsimile repeat prevention device of the present invention, when the control signal receiving means receives the facsimile control signal and the message signal via the telephone line, the control signal transmitting means receives the control signal and the message. A predetermined facsimile control signal corresponding to the signal is transmitted to the facsimile apparatus via the telephone line. As a result, the facsimile apparatus completes the predetermined transmission process and does not repeatedly transmit an erroneous facsimile signal.

In the facsimile repeat prevention telephone according to the present invention, when the control signal receiving means receives the facsimile control signal and the message signal via the telephone line, the control signal transmitting means responds to the control signal and the message signal. The predetermined facsimile control signal is transmitted to the facsimile device via the telephone line. As a result, the facsimile apparatus completes the predetermined transmission process and does not repeatedly transmit an erroneous facsimile signal. Further, the telephone does not need to have a particular configuration for storing the message signal of the transmitted facsimile signal.

[Embodiment] Next, an embodiment of the facsimile repeat prevention telephone of the present invention will be described. FIG. 2 is a block diagram showing the configuration of the error facsimile repeat prevention telephone 1 of this embodiment.
FIG. 3 is an explanatory view of the sequence of the control procedure, and FIG. 4 is a flow chart of the error facsimile repeat prevention processing.

The error facsimile repeat prevention telephone 1 includes a rope control device NCU, a telephone body 3, a modulation / demodulation device MOD, and a communication control device CCE.

The rope control unit NCU includes a public telephone line 5 and a telephone body 3
In addition to connection with the public telephone line 5, data is transmitted and received between the public telephone line 5 and the communication control device CCE. The rope control unit NCU includes a well-known line protection device PD and the like, has a data communication path switching function and a loop holding function, and prevents the transmission of excessive signal levels, dangerous voltage, and direct current for rope protection. Is.

The telephone main body 3 is for making a manual outgoing / incoming call connection to the public telephone line 5. That is, it is a normally used telephone.

The modulation / demodulation device MOD demodulates a control signal or a message signal sent from an external facsimile device (not shown) via the public telephone line 5 and outputs the demodulated signal to the communication control device CCE. The modulation / demodulation device MOD also modulates the control signal output from the communication control device CCE, and transmits this to the public telephone line 5 via the rope control device NCU.

The communication control device CCE includes a well-known microcomputer and the like, and is configured to sequentially execute control according to the control procedure shown in FIG. In other words, the communication control device CCE uses the phase A
-Phase E call setup-Operations from call restoration are sequentially executed. In the tonal control procedure, well-known control signals shown in Table 1 below are used.

Next, the operation of this embodiment will be described based on the error facsimile repetition prevention processing shown in FIG. The process shown in FIG. 4 is started in the communication control unit CCE when the handset 3a of the telephone body 3 is lifted and the telephone body 3 receives the public telephone line 5.

When the processing of FIG. 4 is started, it is first determined whether or not the calling signal CNG sent from a facsimile device (not shown) is received via the public telephone line 5 (S90).
If the call signal CNG is not received, the reception of the call signal CNG is waited as it is. When the call signal CNG is received, the called station confirmation signal CED is output to the public telephone line 5 (S100). Then, the group confirmation signal GI is output (S110). The output of CED and GI is public telephone line 5
The audio signal may be output when the audio signal is not input for a predetermined time. By the output of the CED and GI, the facsimile device (not shown) sends out the group command signal GC according to a predetermined procedure.

After sending the group confirmation signal GI, next the group command signal
The GC is detected (S120). Where group command signal
If the GC is not detected, the processes of S100 to S110 are repeatedly executed until the predetermined time T1 elapses (S130). Predetermined time
If the group command signal GC is not detected even after T1 has elapsed, the tonal control procedure is interrupted (S140).

When the group command signal GC is detected, it is then determined whether phase matching can be performed (S150). If phase matching cannot be performed, the tonal control procedure is interrupted (S1
60) If the phases can be matched, the reception preparation completion confirmation signal CFR is transmitted (S170). Reception ready confirmation signal CFR
Is sent, the facsimile device (not shown) detects this and sends a message.

After sending the reception preparation completion confirmation signal CFR, it is determined whether or not a message is detected next (S180). The detection of the message here is continued until the detection of the message signal is stopped. If the message is no longer detected, then it is determined whether the message end signal EOM is detected (S190). If the message end signal EOM is not detected here, until the predetermined time T3 elapses, S18
0 to S190 message detection and message end signal EOM
Detection continues. Message and end-of-message signal
When the predetermined time T3 has passed without detecting EOM,
The tonal control procedure is interrupted (S210).

When the message end signal EOM is detected, the message confirmation signal MCF is transmitted (S220). As a result, when the facsimile device (not shown) detects the message confirmation signal MCF, it is determined whether or not there is a document to be continuously transmitted,
If there is no manuscript, the facsimile machine sends the procedure end signal EOP.
To interrupt the tonal control procedure.

After transmitting the message confirmation signal MCF, it is determined whether or not the procedure end signal EOP is detected (S230). If the procedure end signal EOP is not detected here, this is continued until the predetermined time T2 elapses (S240). If the procedure end signal EOP is not detected for the predetermined time T2, the processing from the sending of the called station confirmation signal CED in S100 is repeated.

When the procedure end signal EOP is detected within the predetermined time T2, the tonal control procedure is interrupted (S250).

After the interruption of the tonal control procedure (S140, S160, S210, S250), the call recovery process of phase E is performed, and this routine is once terminated.

When the facsimile signal repeat prevention telephone 1 described above receives a facsimile signal transmitted from a facsimile signal (not shown) via the public telephone line 5, the telephone 1 receives this facsimile signal according to the tonal control procedure. As a result, the facsimile device (not shown) transmits the control signal and the message in accordance with the tonal control procedure and completes the predetermined transmission procedure. Therefore, the facsimile device (not shown) does not repeatedly transmit the error facsimile signal. As a result, the nuisance call in which a facsimile signal is repeatedly received by the telephone is eliminated, which is an extremely excellent effect. Further, the error-facsimile repeat prevention telephone 1 of the present embodiment does not require a configuration for recording a message, so that it can be produced with a small number of parts and can be easily incorporated into the telephone. Moreover, it can be supplied at a low price.

It should be noted that the present invention is not limited to the above embodiments, and various embodiments can be carried out without changing the gist of the present invention.

For example, an error facsimile repeat prevention device 51 shown in FIG. 5 may be provided separately from the telephone 53. That is, the rope control device CCE and the handset 53a may be connected by the acoustic coupling modem 55. By doing so, it is possible to provide a device capable of preventing the repetition of error facsimile without modifying the existing telephone set 53.

In the above embodiment, the facsimile is prevented from being repeatedly transmitted according to the tonal control procedure, but instead of this, the facsimile signal is received according to the well-known binary control procedure. Good.

Further, in addition to the above embodiment, a predetermined signal indicating that the user is a telephone may be output. In this case, it is possible to guarantee that the facsimile apparatus is operated in an appropriate state by adding a configuration to the facsimile apparatus to detect that it is a telephone based on this signal.

[Effect of the Invention] The error facsimile repeat prevention device of the invention of claim 1 and the error facsimile repeat prevention telephone of the invention of claim 2 include a control signal and a message signal sent from the facsimile device via a telephone line. And the control signal corresponding thereto is transmitted to the facsimile apparatus via the telephone line. As a result, it is possible to complete a predetermined transmission process in the facsimile device, and to prevent an erroneous facsimile transmission from being repeatedly performed.

[Brief description of drawings]

FIG. 1 shows an error facsimile repeat prevention device of the present invention.
And FIG. 2 is a block diagram illustrating the basic configuration of the error facsimile repeat prevention telephone, FIG. 2 is a block diagram of the error facsimile repeat prevention telephone of the embodiment, FIG. 3 is an explanatory diagram of the tonal control procedure, and FIG. FIG. 5 is a flow chart of prevention processing, and FIG. 5 is a block diagram of an error facsimile repeat prevention apparatus. 1 ... Error facsimile repeat prevention telephone 3 ... Telephone main body 5 ... Public telephone line NCU ... rope control device PD ... line protection device MOD ... modulator / demodulator CCE ... communication control device

Claims (2)

(57) [Claims] 1. An error facsimile repeat prevention device connected to a telephone line, comprising control signal receiving means for receiving a facsimile control signal and a message signal sent from the facsimile device via the telephone line. Control signal transmitting means for transmitting the control signal and a predetermined facsimile control signal corresponding to the message signal to the facsimile device via the telephone line without storing the message signal received by the control signal receiving means An error facsimile repeat prevention device equipped with and. 2. An error facsimile repeat prevention telephone connected to a telephone line, comprising control signal receiving means for receiving a facsimile control signal and a message signal sent from a facsimile device via the telephone line. Control signal transmitting means for transmitting the control signal and a predetermined facsimile control signal corresponding to the message signal to the facsimile device via the telephone line without storing the message signal received by the control signal receiving means Error facsimile repeat prevention telephone with and.