JPH046935A - Cordless phone - Google Patents

Abstract

PURPOSE:To surely receive a talking content from a caller by selecting the speech mode into the automatic answering recording mode automatically when a reply signal from a master set to a slave set is not sent within an incoming call number set optionally. CONSTITUTION:When an incoming call from a caller comes via a telephone line, a ring signal is sent from a master set to a slave set. When no reply signal comes from the slave set, an incoming number of times of a setting number storage section preset by an incoming call number setting button is compared with an incoming call number of a bell count circuit 6, and when the number of incoming call is coincident, the speech mode is switched into the automatic answering recording mode. Simultaneously, the telephone line is closed and a reply message recorded in advance from a recording and reproducing circuit 14 is sent. When the transmission of the reply message is finished, the recording and reproducing circuit 14 is switched into the recording state and the reception of the reply message from the caller is awaited and when the reply message exists, it is recorded. Then the closing of the telephone line is released to terminate the talking with the caller.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cordless telephone with an answering machine function.

(Prior Art) In recent years, with the diversification of information and advances in digital signal processing technology, cordless phones, which allow handsets to be carried freely within a limited range, have become popular.

The basic structure of such a cordless phone consists of a base unit that is connected to a telephone line and a slave unit that has a built-in rechargeable battery and that communicates with a caller via the base unit.

The battery of the handset is charged while it is set in the base unit or in a separate charging tray, and the usable time of the handset depends on the battery. It depends on the performance, but it takes about 8 hours on average.

Figures 3 and 4 show an example of a conventional base unit of a cordless phone with an answering machine function and a slave unit paired with it. , the bell signal is taken into the network control circuit l. The bell signal taken into the network control port Ml is converted into a bell audio signal by the ringer circuit 2, and then sent to the speaker 4 via the amplifier 3, which causes the speaker 4 to ring.

At this time, the ringer circuit 2 sends a detection signal to notify the CPU 5 of the detection of a bell signal, and also sends a bell sound signal to the bell number counting circuit 6.

Then, when the bell number counting circuit 6 sends the result of counting the bell sounds to the CPU 5, the CPU 5 determines the number of times the speaker 4 rings.

Further, upon receiving the detection signal from the ringer circuit 2, the CPU 5 sends a ringing signal to the modem 7 in order to notify the handset side of the call from the caller.

After receiving the signal, the modem 7 adjusts the transmission/reception speed (baud rate) etc. with the handset, converts it into data, and sends it out.The noise reduction circuit 8 compresses or expands the data. is sent to the transmitting/receiving circuit 9.

Then, the transmitting/receiving circuit 9 transmits data to notify the handset side of the call from the caller via the antenna 10.

In addition, 11 in the figure is a dial circuit that outputs dials such as DP/PB (dial pulse/button button), 1
2 is a melody circuit that outputs a hold tone, etc.; 13 is a call circuit that controls the output level of the voice signal and hold tone signal during a call; and 14 is a cassette tape, an IC, etc., and outputs a response message from a microphone 15. The recording and reproducing circuits for recording and recording reply messages from the telephone line are shown.

Data transmitted from the antenna 10 on the base unit side is taken into the transmitting/receiving circuit 17 via the antenna 16 on the slave unit side.

The transmitter/receiver circuit 17 demodulates the data and sends the demodulated data to the CPU 20 via the noise reduction circuit 18 and modem 19.
Send to. The CPU 20 analyzes the demodulated data and sends a switching signal to the switch circuit 21 if it is determined to be a ringing signal.

The switch circuit 21 that receives the signal switches to the side that connects the CPU 20 and the amplifier 22, thereby causing the CPU 20 and the amplifier 22 to be connected.
The speaker 23 rings based on the bell signal from U20.

When the call button 24 is pressed, the CPU 20 sends a response signal to the base unit via the modem 19, noise reduction circuit 18, transmission/reception circuit 17, and antenna 16.

On the base unit side, the CPU 5 uses the antenna 10. When the response signal is received via the transceiver 9, the noise reduction circuit 8, and the modem 7, it sends a hook-on signal to the network control circuit 1 to inform it that reception is possible.

As a result, the telephone line is closed and communication between the handset and the telephone line becomes possible.

In the figure, reference numeral 25 indicates a dial button, 26 indicates a microphone that converts audio into a signal, and 27 indicates a power switch that turns on/off the power supply from the battery 28.

Then, the user uses the cordless phone by switching the call mode to the cordless call mode or the answering mode.

(Problems to be Solved by the Invention) As described above, when the above-mentioned conventional cordless phone receives a call from a caller via a telephone line, it waits for a response signal from the handset and then closes the telephone line. This enables communication between the handset and the telephone line.

Therefore, in order to be aware of calls from the telephone line at a location far from the base unit, it is necessary to keep the power switch 27 on the handset side constantly in the on state.

For this reason, if the battery 28 becomes insufficiently charged, or if the power switch 27 is turned off to avoid this, it will be impossible to know even if there is a call from the telephone line. , you will not be able to talk to the caller.

In addition, even if you can hear the sound coming from the base unit located far away, if the handset cannot be used due to insufficient charging of the battery 28, the caller cannot be contacted in the same way. You will no longer be able to do so.

As described above, although cordless phones have the advantage of allowing handsets to be carried freely, they also have the disadvantage that calls may become impossible due to lack of variation in handsets.

The present invention was made in response to these circumstances, and
To provide a cordless telephone that can reliably receive the contents of a call from a caller.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a cordless telephone that operates in a cordless call mode and an answering mode, and includes an incoming call detection means for detecting an incoming call from a telephone line, and an incoming call detection means for detecting an incoming call from a telephone line. an incoming call count setting means for setting a number of incoming calls; an incoming call comparison means for comparing a detection result by the incoming call detection means with a setting result by the incoming call count setting means; If there is no response from the handset until the call is made, mode switching means is provided for switching the call mode to the answering mode.

(Function) In the cordless phone of the present invention, when an incoming call from a caller occurs via the telephone line, the incoming call detection means detects it, and the incoming call comparison means compares the detection result by the incoming call detection means with the incoming call. The setting result by the call count setting means is compared.

If there is no response from the handset until the number of incoming calls matches the number of incoming calls determined by the incoming call comparing means, the mode switching means switches the call mode to the answering mode.

Therefore, even if the handset placed far away from the base unit becomes unusable due to insufficient charging or not being powered on, the call mode will automatically switch to answering mode. This allows you to respond to the caller.

(Example) Hereinafter, details of an example of the present invention will be described based on the drawings. In the figures described below, parts common to those in FIG. 3 are designated by the same reference numerals, and redundant explanations will be omitted. Furthermore, since the slave device has the same configuration as that in FIG. 4, its illustration is omitted.

FIG. 1 shows an embodiment of a cordless phone according to the present invention.

As shown in the figure, the cordless phone has a network control circuit 1.
, ringer circuit 2, amplifier 3, speaker 4, CPU 5,
Bell number counting circuit 6, modem 7, noise reduction circuit 8,
Transmission/reception circuit 9, antenna 10, dial circuit 11, melody circuit 12, telephone call circuit 13, recording/reproduction circuit 14, microphone 1
5 is provided.

Further, the cordless phone is provided with a number of calls setting button 29 for setting the number of calls received, and a set number holding section 30 for holding the set number of times.

Next, the operation of the cordless phone having such a configuration will be explained using FIG. 2.

First, when an incoming call from a calling party occurs via the telephone line (step 201), a ringing signal is transmitted from the base unit to the slave unit (step 202).

Then, when a response signal is transmitted from the handset side (step 203), the telephone line is closed, and calls are enabled until the telephone line is disconnected (step 205). Step 204).

On the other hand, if there is no response signal from the handset side, the number of calls received by the set number holding unit 300 and the number of calls received by the bell number cunt circuit 60, which are preset by the number of calls setting button 29, are compared. (Step 208) If the number of incoming calls matches, the call mode is switched to answering mode (Step 207).

At the same time, the telephone line is closed (step 208),
A prerecorded response message is transmitted from the recording/reproducing circuit 14 (step 209).

When the transmission of the response message is completed, the recording/reproducing circuit 14 is switched to the recording state and waits to receive a response message from the caller (step 210), and if there is a response message, it is recorded (step 211). .

Then, the telephone line is disconnected (step 2I2), thereby ending the conversation with the caller.

In this way, in this embodiment, if a reply signal is not sent from the slave unit to the base unit within the arbitrarily set number of incoming calls, the call mode is automatically switched to the answering mode. , the content of the call from the caller can be reliably received.

Therefore, even if the battery of a handset located far away from the base unit runs out of charge, or the power switch is turned off to avoid this, the answering mode will allow the caller to This makes it possible to fully compensate for the shortcomings of cordless phones.

In this embodiment, a case has been described in which the call mode is automatically switched to the answering mode when no response signal is sent from the slave unit to the base unit according to the number of incoming calls set arbitrarily. The number of incoming calls is not limited to this example, and the number of incoming calls may be set in advance in the CPU.

Furthermore, the present invention is not limited to this example, and the call mode may be automatically switched to the answering mode after a predetermined period of time has passed since an incoming call occurs.

Furthermore, in this embodiment, a case has been described in which a bell number counting circuit 6 that counts the number of calls from a caller and a set number holding section 30 that holds an arbitrarily set number of incoming calls are provided outside the CPU. However, the present invention is not limited to this example, and each of them may be provided within the CPU.

(Effects of the Invention) As explained above, according to the cordless phone of the present invention, a handset placed far from a base unit may not be fully charged or may not be powered on, making it unusable. Even in such a case, the telephone conversation mode is automatically switched to the answering mode to enable a response to the caller, so that the content of the call from the caller can be reliably received.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the base unit of the cordless phone of the present invention, FIG. 2 is a flowchart showing the operation of the cordless phone of FIG. 1, and FIG. 3 is a block diagram showing the configuration of the base unit of the conventional cordless phone. FIG. 4 is a block diagram showing the configuration of a slave device paired with the parent device in FIG. 3. FIG. 1...Network control circuit, 2...Ringer circuit, 3.22
...Amplifier, 4.23...Speaker, 5.20...
・CPU, 8... Bell number counting circuit, 7.19...
・Modem, 8.18...Noise reduction circuit, 9.17・
... Transmission/reception circuit, 10... Antenna, 11... Dial circuit, 12... Melody circuit, 13... Call circuit, 14... Recording/reproduction circuit, 15... Microphone, 16...
・Antenna, 21... Switch circuit, 24... Call button, 29... Incoming call count setting button, 30... Set number of times holding section. Figure 2

Claims (1)

[Claims] (1) In a cordless phone having a cordless call mode and an answering machine mode, an incoming call detection means for detecting an incoming call from a telephone line, an incoming call number setting means for setting the number of incoming calls, and a detection result by the incoming call detection means. and an incoming call comparing means for comparing the setting result of the incoming call number setting means, and if there is no response from the handset until the number of incoming calls matches by the incoming call comparing means, the call mode is changed. A cordless phone comprising mode switching means for switching to the answering mode.