JPH0818653A - Telephone set - Google Patents

Abstract

PURPOSE:To prevent the erroneous detection of DTMF signals by neglecting the DTMF signals when a discrimination code is detected after lapse of a fixed period of time from the DTMF signals detected while a sound recording medium is reproduced. CONSTITUTION:This set is provided with a detection means 15 for detecting the DTMF signals from an outside, a switching means for recording the DTMF signals in the sound recording medium such as a tape 14 and switching the DTMF signals from a communication mode to a remote control mode when the DTMF signals are recognized by the detection means 15 and a sound recording means for recording the discrimination code after the lapse of a fixed period of time of writing the DTMF signals in the medium in the case of the DTMF signals received in a communication channel network 16 from the outside at the time of recording a message from the outside in the medium in the remote control mode. Then, when the discrimination code is detected after lapse of a fixed period of time from detection the DTMF signals while reproducing the sound recording medium, the DTMF signals are neglected. Thus, whether the signals are the correctly recorded DTMF signals or the erroneously recorded signals is discriminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when performing a remote control operation using a DTMF signal in which a plurality of frequencies are superposed via a communication line, has a reply message or a message message or a message message which is an answering machine function. The present invention relates to a telephone having an answering machine function that prevents malfunction by recording additional data after erroneous data is recorded even when erroneous data is recorded.

[0002]

2. Description of the Related Art In a conventional telephone having an answering machine function, when a remote control operation is performed from the outside using a communication line, by detecting a DTMF signal in the communication line,
A telephone having an answering machine having a function of operating a remote controller based on the DTMF signal and outputting a response message or the like from a voice IC from an answering machine has been introduced.

[0003]

However, in the conventional telephone having the answering machine function as described above, the DTMF signal in the middle of data transmission is from the communication line or is already input by mistake. If the DTMF signal is included in the response message sent by the IC or the like in the telephone with an output means such as a voice IC such as an answering machine, since there is no means for determining whether the signal is a signal, There is a problem that the telephone determines that the signal is a signal from an external remote control operation and causes a malfunction.

[0004]

SUMMARY OF THE INVENTION The present invention is intended to solve these problems, and in a telephone having a function of transmitting an answering message, a detecting means for detecting a DTMF signal from the outside and its detection. DTM by means
When the F signal is recognized, the DTMF signal is recorded on a recording medium such as tape, and switching means for switching from the call mode to the remote control mode, and when recording a message from the outside on the medium in the remote control mode, communication from the outside is performed. In the case of a DTMF signal received on the line, it is composed of a recording means for recording an identification code after a fixed time of the DTMF signal written in the medium, and is identified after a fixed time from the DTMF signal detected during reproduction of the recording medium A telephone is provided which is adapted to ignore the DTMF signal when a code is detected.

[0005]

According to the structure of the present invention, when a DTMF signal is detected, D of a specific code is detected about 100 ms later.
When the TMF signal is detected, D detected first
The TMF signal is invalidated and nothing is detected after about 100 ms. Alternatively, even if it is detected, if it is not a specific code, the DTMF signal detected first and the DTMF signal detected thereafter are made effective to prevent erroneous detection of the DTMF signal.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a block diagram of a telephone showing an embodiment of the present invention, and FIG. 2 is a D of a telephone showing an embodiment of the present invention.
FIG. 3 is a flow chart for explaining an operation at the time of recording a TMF signal, and FIG. 3 is a flow chart for explaining an operation at the time of recording / reproducing of the telephone showing an embodiment of the present invention.

In FIG. 1, a telephone 1 of the present invention has an input means 10 for inputting data, a RAM 12 for storing the input data, and a ROM 11 for storing a program for controlling the telephone 1. And that RO
A CPU 13 which controls in accordance with a command of a program stored in M11, a telephone network 1 through which the telephone 1 transmits and receives data to and from a partner telephone (not shown), and a DTMF signal from the partner telephone are detected. For DT
It is composed of an MF detecting means 15 and a tape 14 for recording a message from the partner telephone. The operation of recording the DTMF signal will be described with reference to FIGS. 1 and 2.

The telephone of the present invention has a function of recording a response message, which is an answering machine function, or confirming the requirements recorded on a tape from the outside away from the telephone. Here, the specification is such that when a DTMF signal is externally detected while the telephone is sending a response message, the telephone is automatically switched to the remote control mode. When it is such a specification, when recording a response message from the outside on tape, by mistake,
When the DTMF signal is transmitted, the mode is switched to the remote control mode while reproducing the tape or the voice IC. Therefore, in the present invention, the code is ignored when the DTMF signal is recorded from the outside in order to determine whether or not the DTMF signal is erroneously received. In FIG. 2, the tape is turned on to record a response message so that the tape can be recorded anytime (step 1). At this time, in order to detect whether or not the partner telephone is transmitting the DTMF signal, the DTMF shown in FIG. 1 is detected.
The detection means 15 detects the DTMF signal (step 2). By this DTMF detection means 15, DTM
When the F signal is not detected, the tape recording is ended (step 3). On the contrary, when the DTMF signal is detected, the tape is advanced as it is for about 100 ms (step 4). After the advanced tape, a certain code is added and recorded (step 5). This code is. When the recording is completed and the recording end condition is satisfied, the recording is ended (step 6). Based on FIGS. 1 and 3, D
The operation of recording and reproducing the TMF signal will be described.

In order to reproduce the response message recorded on the tape or IC, the power of the tape or the like is turned on (step 20). When the DTMF signal is not detected during the reproduction of this response message, the reproduction processing is ended (step 22). Further, when the DTMF signal is recorded during the reproduction of the response message, it is determined whether or not the DTMF signal is recorded at about 100 ms from the recorded DTMF signal (step 23). . DT by the judgment
When the MF signal is not recorded, remote control operation processing is performed (step 24). When the DTMF signal is recorded, the identification code of the recorded DTMF signal is determined (step 25), and when the code does not match, remote control operation processing is performed (step 26). When the codes match, the DTMF signal recorded on the tape is recognized as being erroneously recorded, and the recorded DTMF signal is ignored (step 27). Then, the reproduction process is continued (step 28).

[0010]

As described above, according to the present invention, the DT is mistakenly recorded while the response message is being recorded in the remote control mode.
When the MF signal is recorded, the recorded DTM
By recording a code indicating that the DTMF signal was erroneously recorded at a position where the tape was advanced about 100 ms from the F signal, the code was correctly recorded by identifying the code when playing this tape. DT
It is possible to discriminate between an MF signal and an erroneously recorded DTMF signal.

[Brief description of drawings]

FIG. 1 is a block diagram of a telephone showing an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the telephone when recording a DTMF signal according to an embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation during recording / playback of the telephone according to the embodiment of the present invention.

[Explanation of symbols]

 1 Telephone 10 Input Means 11 ROM 12 RAM 13 CPU 14 Tape 15 DTMF Detecting Means 16 Line Network

Claims (1)

[Claims] 1. A telephone having a function of transmitting an answering machine message, detecting means for detecting a DTMF signal from the outside, and recording the DTMF signal on a recording medium such as a tape when the DTMF signal is recognized by the detecting means. Then, switching means for switching from the call mode to the remote control mode, and when recording a message from the outside in the remote control mode on the medium, when the DTMF signal received from the communication line from the outside, the DTMF signal written on the medium And a recording means for recording the identification code after a certain time, and when the identification code is detected after a certain time from the DTMF signal detected during reproduction of the recording medium, the DTMF signal is ignored. A telephone characterized by.