JPH05252258A - Automatic answering telephone system - Google Patents

Abstract

PURPOSE:To prevent a telephone set from being malfunctioned by a tone signal at reproduction when the tone signal is recorded by automatic answering recording. CONSTITUTION:A recording and reproducing section 3 records a speech signal from a telephone section 1 via an input output section 2. When a tone signal is inputted during the recording of the speech signal, a tone signal detection section 4 detects the tone signal via a control section 8, a specific signal such as a non-audio frequency signal is outputted by a signal generating section 5 via the control section based on the detection and recorded in succession to the tone signal. The tone signal detection section detects the tone signal by the reproduced signal at the reproduction of the recording and reproduction section and after the tone signal is detected, a specific signal is reproduced within a required time by the time count of a clock section 6, the control of the telephone set relating to the automatic answering function or the like by the function control section 7 is inhibited via the control section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an answering machine,
When a tone signal (DTMF signal or the like) is recorded, the present invention relates to a device which prevents a malfunction of a telephone set due to the tone signal when reproducing the recording.

[0002]

2. Description of the Related Art Some answering machines can be set to an answering machine recording mode by operating another phone or the like, and an answering machine can be played back and listened to by operating another phone or the like. In these operations, a tone signal is transmitted by a required dial operation of another telephone, and this signal is detected and discriminated by an answering machine, so that the answering machine is switched to an answering machine function or an answering machine recording is reproduced. .. As described above, since a telephone having such a function has a tone signal detection function, for example, a tone signal is input and recorded during answering machine recording, and when the answering machine recording is reproduced, the tone signal reproduced is used. , The phone may malfunction. For this reason, conventionally, for example, a filter may be provided in the input circuit of the recording unit to remove the tone signal included in the call signal so that the signal is not recorded. However, the tone signal is typically about 700 Hz to 17 Hz.
Since several waves in the frequency band of the call voice of 00 Hertz are used, it is quite difficult to remove these frequency components without impairing the call sound quality.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. When a voice signal is mixed with a tone signal and the tone signal is input, the tone signal is detected and recorded. Immediately after that, a signal of a specific frequency, for example, an inaudible frequency is generated and recorded. It is another object of the present invention to provide a device that prohibits a control operation based on a tone signal when a signal of the specific frequency is detected within a preset time from the detection of the tone signal during reproduction.

[0004]

In order to solve the above problems, the present invention provides an input / output unit for inputting / outputting a call signal and an input / output unit for recording / receiving a call signal in an answering machine for recording a call signal by a required answering machine setting. A recording / playback unit that plays back, a tone signal detection unit that detects a tone signal for control from the recording signal or playback signal, and a signal of a specific frequency is generated based on the signal from the tone signal detection unit during recording by the recording / playback unit The signal generator input to the recording / playback unit, the timer unit that responds to the signal from the tone signal detection unit when playback of the recording / playback unit starts timekeeping, and controls the telephone to answering machine setting etc. based on the required tone signal. At the same time, during reproduction of the recording / reproducing unit, after the signal is output from the tone signal detecting unit and before the signal is output from the timing unit, the signal of the specific frequency is reproduced,
An answering machine including a function control section for prohibiting functions such as answering machine setting, and a control section for controlling the input / output section, recording / playback section, tone signal detection section, signal generation section, clock section and function control section. Is provided.

[0005]

With the above construction, in the answering machine according to the present invention, when a voice signal to be recorded contains a tone signal at the time of recording an answering machine, immediately after this tone signal, a specific frequency, for example, Record audio frequency signals. Then, when the tone signal is reproduced at the time of reproducing the recording, if the signal of the specific frequency is reproduced within a required time from the reproduction of the tone signal, the control of the telephone by the tone signal is prohibited.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an answering machine according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram of essential parts of an embodiment of an answering machine according to the present invention. In the figure, 1 is a telephone section. An input / output unit 2 inputs and outputs a call signal and the like via the telephone unit 1. 3 is a recording / playback unit,
With the required answering machine setting, the reception signal from the input / output unit 2 is recorded and reproduced by the required control signal. Reference numeral 4 denotes a tone signal detecting section for detecting a recording signal, a reproduction signal of the recording / reproducing section 3 or a tone signal in the signal from the input / output section 2.
A signal generator 5 generates a signal of a specific frequency (inaudible frequency or the like) based on the signal from the tone signal detector 4 during recording by the recording / playback unit 3. Reference numeral 6 denotes a time counting unit, which starts time counting by a signal from the tone signal detecting unit 5 during reproduction by the recording / reproducing unit 3 and outputs a signal when a set time has elapsed. A function control unit 7 controls the telephone by a tone signal when a signal of the specific frequency is detected in the reproduction signal during the reproduction of the recording / reproduction unit 3 until the signal is output from the timer unit 6. In addition, when the answering machine is set, the telephone is off-hook by the required number of ringing signals and on-hook by the interruption of the call signal input. A control unit 8 controls each unit of the apparatus.

Next, the operation of the answering machine according to the present invention will be described with reference to the conceptual diagram of the signal waveform of FIG. 2 and the flowchart of FIG. FIG. 3A is a flowchart of the operation at the time of answering machine recording, and FIG. 3B is a flowchart of the operation at the time of answering machine recording and reproduction.

First, in FIG. 3 (A), the telephone is switched to the answering machine function by a required operation (step 1, and thereafter).
Abbreviated as ST1). Thus, when a call signal is input from the telephone unit 1 via the input / output unit 2, the function control unit 7 via the control unit 8 first off-hooks the telephone by counting the required number of call signals, and then the input / output unit 2 The call signal 11 is input to the recording / playback unit 3 (ST2) and recorded (ST3). During this recording,
When tone signal 12 is included in call signal 11 (ST4: Yes
), The tone signal detector 4 detects this tone signal 12 via the controller 8, and the signal generator 5 via the controller 8
A signal 13 of a specific frequency, for example, an inaudible frequency is generated (ST5), mixed with a call signal and input to the recording / playback unit 3,
Record (ST6).

When the voice recorded on the telephone at home or the like is reproduced by the operation of the telephone at the outside line, first, as shown in FIG. 2B, after calling the telephone at home or the like, it is set to reproduce the answering machine recording. The specified PIN and the required number are sent by dialing (ST11). This dial signal is sent to the control unit 8
Is detected by the tone signal detection unit 4 via the control unit 8 and the function control unit 7 via the control unit 8 controls the recording / playback unit 3 to perform a playback operation (ST12). When the signal reproduced by the recording / reproducing unit 3 includes a tone signal (ST13: Yes), the tone signal detecting unit 4 detects the tone signal via the control unit 8. Then, when the signal of the specific frequency is reproduced following this tone signal (ST
14: Yes), the control unit 8 prohibits the control function of the function control unit 7 based on the tone signal, for example, control operations such as setting of answering machine recording and reproduction of recording (ST15). The ST
When the tone signal is not reproduced in 13 (ST13: No), the recording / reproducing unit 3 performs a normal reproducing operation.

When the specific signal is not reproduced after the tone signal is detected (ST14: No) and the time counting by the time counting unit 6 started in response to the signal from the tone signal detecting unit 4 reaches the required time ( ST16: Yes), it is determined that the input tone signal is for the required switching of the telephone, and based on this tone signal, the function control unit 7 via the control unit 8 causes the telephone to perform the required function. Control (ST1
7). In addition, the tone signal detection unit 4 is provided in the recording / playback unit 3
The tone control device detects a tone signal from a signal other than the reproduction signal and controls the telephone through the function control unit 7.
Performs control based on the tone signal unless the signal of the specific frequency is input immediately after the tone signal.

[0011]

As described above, according to the answering machine of the present invention, if a tone signal is input by operating the telephone of the outside line, various setting operations corresponding to the tone signal can be performed. The remote operation through a telephone line or the like, for example, an operation such as answering machine setting, is not hindered, and the tone signal included in the signal recorded / reproduced by the answering machine function or the like does not operate. Therefore, for example, even if a tone signal is transmitted and recorded by an erroneous operation of the caller during the recording of the answering machine, there is no fear that the telephone will malfunction due to the reproduction of the tone signal.

[Brief description of drawings]

FIG. 1 is a block diagram of a main part of an embodiment of an answering machine according to the present invention.

FIG. 2 is a conceptual diagram of signal waveforms for explaining the operation of the answering machine according to the present invention.

FIG. 3 is a flowchart for explaining the operation of the answering machine according to the present invention.

[Explanation of symbols]

 1 Telephone section 2 Input / output section 3 Recording / playback section 4 Tone signal detection section 5 Signal generation section 6 Timing section 7 Function control section 8 Control section 11 Call signal 12 Tone signal 13 Signal of specific frequency (inaudible frequency etc.)

Claims (1)

[Claims] 1. An answering machine for recording an incoming call signal according to a required answering machine setting, an input / output unit for inputting / outputting a call signal, a recording / playback unit for recording / playing back the incoming call signal, and a control by a recording signal or a playback signal. Tone signal detection unit for detecting a tone signal for recording, and a signal generation unit for generating a signal of a specific frequency based on the signal from the tone signal detection unit during recording by the recording / playback unit and inputting the signal to the recording / playback unit, and the recording / playback unit During playback, the time signal responds to the signal from the tone signal detector and starts timing, and controls the telephone to answering machine setting etc. based on the required tone signal. If the signal of the specific frequency is reproduced after the signal is output before the signal is output from the timer unit, the function control unit for prohibiting functions such as answering machine setting, the input / output unit, and the recording / reproducing unit An answering machine including a tone signal detector, a signal generator, a timer, and a controller that controls a function controller.