JPH0237142B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wireless answering machine that automatically sends a message through a telephone line when an incoming call is received.

Conventional configurations and their problems In recent years, there has been remarkable progress in the information-related field, especially in telephones, which are the most popular.

A conventional wireless answering machine (hereinafter simply referred to as a telephone) will be explained below. FIG. 1 is a perspective view of a conventional wireless answering machine.
is connected to the telephone line through telephone cord 2. The mobile unit 3 includes a push-button telephone dial (hereinafter simply referred to as dial) 4, a receiver 5, and a transmitter 6.
A call from the mobile unit 3 is wirelessly coupled by a transmitter and a receiver connected to the antenna 7 and the antenna 8 of the main unit 1, and is connected to the telephone cord 2 pulled out from the main unit 1. Therefore, a call is made to the other party via a telephone line.

Furthermore, the main unit 1 is provided with an answering machine function switch (hereinafter simply referred to as a switch) 9, and a tape recorder unit for reproducing message items (hereinafter simply referred to as a reproducing tape recorder) 10 controlled by the switch 9. and a tape recorder unit (hereinafter simply referred to as a recording tape recorder) 11 for recording the contents of a call.

FIG. 2 is a block diagram of a conventional telephone, in which the main body 1 includes a regenerative amplifier 12, a regenerative head 13,
It has a built-in recording tape recorder 11 consisting of a reproduction tape recorder 10 composed of a reproduction tape recorder control section 14, a recording amplifier 15, a recording head 16, and a recording tape recorder control section 17,
In addition, in order to perform wireless communication with the mobile unit 3, frequency bands are separated by bandpass filters 18 and 19 in the antenna 8, and a transmitting unit 20 and a receiving unit 21 are connected to each other.
connected to. The receiving section 21 is connected to a detector 22 and receives a signal outputted through a switch 9d connected to an incoming call detector 23 which detects an incoming call from an external caller through a telephone cord 2 connected to a telephone line, as well as an R gate. 24 and is connected to a control device 26 that controls a relay 25a that connects the line. The incoming call detector 23 is also connected to a bell device 28 that notifies the incoming call, and the ringing signal of the bell device 28 is connected to the transmitter 20.

An interface 27 is connected to the relay 25a, and switches 9b and 9c connect the call signal to the transmitter 20 and the receiver 21, or the playback tape recorder 10 and the recording tape recorder 11. , 9c, and a relay 25b controlled by a control device 26 like the relay 25a, voltage is applied to both tape recorder control sections 14 and 17. Further, the control section 17 is connected to the R gate.

The mobile unit 3 has a dial 4, a receiver 5, and a transmitter 6.
The receiver 5 and the transmitter 6 each have a low frequency amplifier 28, 29, and a receiver 30, respectively.
Transmitter 31 and bandpass filters 32 and 33
It is connected to the antenna 7 through. The transmitter 31 is provided with a transmitter switch 34 .

The operation of the conventional telephone configured as described above will be described below. First, switch 9
When a, 9b, and 9c are turned off (positions shown in FIG. 2), when a call is received from an external caller through the telephone cord 2 from the telephone line, the detector 23 emits a control signal and also activates the bell device. At step 28, the receiver is notified of the incoming call. The bell device 28 sends out a notification signal to the transmitting section 20, which transmits it to the receiving section 30 of the portable section 3. It is possible to notify even if the person is further away than 1.

When the recipient turns on the transmitter switch 34 of the mobile unit 3, the transmitter 31 operates, and the main unit 1 and the mobile unit 3
becomes capable of wireless communication, and applies a detection output signal from the detector 22 connected to the receiving section 21 of the main body section 1 to the R gate 24, drives the control device 26, and controls the relay 25a. When the relay 25a is connected, the telephone line and the main unit 1 are connected, and the transmitting unit 20 and receiving unit 21 of the main unit 1 and the receiving unit 30 and transmitting unit 31 of the mobile unit 3 are wirelessly coupled through their respective antennas 8 and 7. and a telephone conversation is established. To end the call, reverse the above and press the mobile unit 3.
If the transmission switch 34 of the control device 2 is turned off, the control device 2
6, the relay 25a is disconnected.

Next, when the switches 9a, 9b, 9c, and 9d are turned on, the interface 27 connects the playback tape recorder 10 and the recording tape recorder 1.
1, and both tape recorders 1
The control units 14 and 17 of 0 and 11 are connected to the relay 25b.
The device is turned off and is waiting for incoming calls. In the above state,
When a call is received from an external caller, the incoming call detector 23 and the following operate as in the case of the above call, but since the switch 9d is in the "on" position, the R gate is activated regardless of the position of the transmitting switch 34 on the mobile unit 3. A control device 26 operates via 24, and relays 25a, 2
5b turns on. When the relay 25b operates, since the switch 9a is turned on, the control units 14 and 17 of the playback tape recorder 10 and the recording tape recorder 11 operate, and the playback tape recorder 10 outputs the previously recorded data. A tape recorder 11 plays back the message and conveys it to the caller.
records the content of the call from the caller. While the control section 17 is in operation, the relay 25a is kept in the communication state by the control device 26 via the R gate 24 connected to the control section 17. When the message is reproduced, the control section 14 controls the reproduction tape recorder 1.
When you stop the operation of 0 and finish recording the contents of the call,
The control section 17 stops the recording tape recorder 11, and also controls the R gate 24 and the control device 26.
The relays 25a and 25b are turned off via the , and the system returns to a standby state for receiving a telephone call. (The following operating function is referred to as an answering machine function.) However, in the conventional configuration described above, in order to determine execution of the above-mentioned answering machine function by operating the switch 9, the mobile unit 3 is moved away from the main unit 1. If you are carrying a phone and the person is out of a good radio transmission range without realizing it, and wireless communication becomes impossible, even if you receive a call from outside, the answering machine function will not work and the phone will not be able to receive a call. The problem was that it was not possible to respond to

Purpose of the invention The present invention solves the above-mentioned conventional problems.
To provide a telephone capable of always answering calls by automatically operating an answering machine function.

Structure of the Invention The present invention comprises an answering machine function switch, a first control device that selects functions of a wireless telephone and an answering machine by opening and closing the switch, and controlling the control device by the switch or the detector. Second to do
It is a wireless answering machine equipped with a control device,
By configuring a control system that selects functions using a wave detector, the answering machine function is automatically executed when communication between the main unit and the mobile unit becomes impossible.
It is capable of answering calls at all times and greatly enhances the functionality of a wireless answering machine.

DESCRIPTION OF THE EMBODIMENTS FIG. 3 shows a block diagram of a wireless answering machine according to an embodiment of the present invention. The main unit 1 includes a detector 23 for detecting incoming calls from the outside through the telephone cord 2, a bell device 28 connected to the detector, a relay 25a for connecting a line, a reproducing head 13, and a reproducing amplifier 12. The R gate 24 controls the relay 25b, which is a condition for applying voltage to the control section 14 of the playback tape recorder 10, and the control section 17 of the recording tape recorder 11, which consists of the recording head 16 and recording amplifier 15. The connected control device 26 and detector 22, the interface 27 that separates input and output to the line, and the bandpass filter 18 connected to each of the transmitting section 20 and receiving section 21 for wireless communication with the mobile section 3, 19 and antenna 8 are the same as the conventional ones. The mobile unit 3 is also connected to the dial 4, the receiver 5, and the transmitter 6, and the main unit 1
low frequency amplifiers 28, 2 for wireless communication with
9. The receiving section 30, the transmitting section 31, the bandpass filters 32, 33, and the antenna 7 are also the same as the conventional ones, so they are given the same numbers.

The main body includes conventional switches 9a, 9b, 9.
Relays 35a, 35b, 3 instead of c, 9d
5c, 35d are provided, and the relays 35a, 35
a first control device 3 that controls
6 and a switch 9 for determining whether or not to execute the answering machine function using the control device 36, and furthermore, when it is possible to communicate with the mobile unit 3, the mobile unit 3 is connected to a transmitter connected to the transmitter 31. 37 single signals are sent to the receiving section of the main body 1, but are removed by the notch filter 38, so the operation is similar to the conventional example including the operation of the detector 22 and below.

Here, the transmitting unit 31 of the mobile unit 3 does not turn off unless the power of the mobile unit 3 is turned off, and always transmits the oscillator 3.
If the mobile unit 3 and the main unit 1 can communicate in a state where the dial 4 and the transmitter 6 signals are turned off with the call switch 39 (hereinafter referred to as standby state), the main unit Receiving section 21 of section 1
The detector 22 (hereinafter referred to as the first detector) for maintaining the telephone line is connected to the output of the bandpass filter 40 that selects the single frequency signal.
A separate detector 41 (hereinafter referred to as the second detector)
The output of the inverter 42 connected to the switch 9
However, since the output of the inverter 42 is "L", the first control device 36 does not operate. When the telephone call switch 39 is turned on, the single frequency signal is removed by the notch filter 38, and the telephone line is maintained through the first wave detector 22.

However, when the mobile unit 3 and the main body unit 1 cannot communicate, the output of the inverter 42 becomes "H", so the R gate 4
3 by the first control device 36 via the relay 3
5a, 35b, 35c, and 35d are forcibly switched to the answering machine function execution state even if the switch 9 is OFF.

As described above, according to this embodiment, the bandpass filter 40, the second detector 41, the inverter 42,
A second control device 44 composed of an R gate 43
The first control device 36 performs function selection by
can be controlled depending on whether or not communication is possible between the main unit 1 and the mobile unit 3.

Furthermore, as shown in FIG.
A transistor switch 45 is connected to the output of the R gate 42 in 4, and when communication is possible, the transistor switch 45 is turned off and the LED 46 is turned off.
By lighting up the LED 46 when communication is impossible, the main body 1 can recognize the status of the mobile unit 3.

Further, as shown in FIG. 5, the second control device 4
The output of the inverter 46 that inverts the output of the control section 17 of the recording tape recorder 11 is added to the AND gate 47 together with the output of the detector 41 in the recording tape recorder 11.
The output of the gate 47 is transferred to the inverter 42 and the R gate 43.
A configuration is adopted in which the first control device 36 is controlled via. With the above configuration, the answering machine function is in operation while the main unit 1 and the mobile unit 3 are unable to communicate, and one input of the AND gate 47 is
The inverter 46 always makes it "L", and the above
Since the output of AND gate 47 is always "L",
The answering machine function continues until the control section 17 of the recording tape recorder 11 stops and the line is cut off by the relay 25a via the control device 26.
As described above, according to this embodiment, for example, if the communication impossible state is due to the power of the mobile unit 3 being turned off, the answering machine function may suddenly cause the mobile unit 3 to
By retaining the above functions even when the power is turned on, the answering machine function can be used until the call ends.

Effects of the Invention The present invention provides an answering machine function switch and a control that forcibly puts the answering machine function into an execution state when wireless communication between the main unit and the mobile unit is not possible, regardless of the above-mentioned switch. By installing the device, you can answer calls at all times.Furthermore, you can select whether to perform the answering machine function depending on whether communication is possible between the mobile unit and the main unit. Function switch can be controlled remotely from the mobile unit. In addition, by providing the control device with an indicator that displays whether or not communication is possible on both the main unit, the mobile unit, or either one, the limit of the communication range can be recognized, and the above-mentioned forced To cancel the function switching operation,
By configuring a control device that does not run during the answering machine function, when the main unit and the mobile unit are far apart, the detection unit can detect a drop in the detection level and automatically eliminate calls as an answering machine. This makes it possible to realize a wireless answering machine that can achieve a number of excellent effects.

[Brief explanation of drawings]

Figure 1 is a perspective view of a conventional wireless answering machine.
FIG. 2 is a block diagram of a conventional wireless answering machine, and FIGS. 3 to 5 are block diagrams of an embodiment of the present invention. 1...Main unit, 3...Mobile unit, 7, 8...Antenna, 9...Answering machine function switch, 10...
Tape recorder section for reproducing message contents, 11... Tape recorder section for recording call contents, 20, 31... Transmitting section, 21, 30... Receiving section, 22, 41... Detector, 23... Incoming call detector, 26, 36...control device, 37...oscillator, 44...control device.

Claims (1)

[Scope of Claims] 1. A main body having a function of automatically transmitting a pre-prepared message to a caller through a telephone line when a telephone call is received, and having a switch for switching whether or not to execute the above-mentioned functional operation. Department and
It is composed of a mobile part having a transmitter, a handset, and a telephone dial, which are connected to the main body part by wireless communication,
The main unit further includes a control device capable of switching the changeover switch to a state that executes the function of forcibly transmitting the message regardless of the state, and a reception level for receiving the transmission signal from the mobile unit. and a detection unit that detects the detection unit, and when the detection level of the received signal by the detection unit falls below a certain level and wireless communication between the main unit and the mobile unit becomes impossible, the output of the detection unit performs the control described above. 1. A wireless answering machine, characterized in that the device is switched to a state in which it executes a functional operation of transmitting a message. 2. The wireless answering machine according to claim 1, characterized in that both or one of the main unit and the portable unit is provided with a display that displays whether or not an operation of the control device is being performed. 3. The wireless answering machine according to claim 1, further comprising a control device that does not perform the restoration from the forced switching operation at least during the message sending operation.