JPH0362653A - Cordless telephone set - Google Patents

Abstract

PURPOSE:To charge a slave station efficiently by selecting the slave station to be OFF mode and loading it to the charger of a master station so as to recognize the arrival of a call. CONSTITUTION:A reception section 14 receives a speech signal and a tone signal f1 sent from a master station. The speech signal is amplified by a low frequency amplifier circuit 15 and reproduced by a speaker 16, while the tone signal f1 is detected by a tone signal f1 detection circuit 17 and reproduced by the speaker 16 to inform it to a person of the slave station that a phone call arrives. A transmission section 18 sends a speech signal from the slave station by a microphone 19, a tone signal f2 generated from a tone signal f2 generating circuit 21 when a speech switch 20 is closed, a tone signal f3 generated by the closing of a call switch 22 when the slave station calls the master station and a dial pulse signal from a dial pulse generating circuit 24. When the speech switch 20 is closed, all circuits are energized, but in the case of the standby where the switch 20 is opened, only the reception circuit is energized.

Description

[Detailed description of the invention] (a) Industrial application field The present invention uses a transmitter/receiver connected to a telephone line as a master station, and connects this and a portable slave station wirelessly, thereby connecting the slave station and an outside line. The present invention also relates to a cordless telephone device that allows free communication between a master station and a slave station as an intercom.

(b) Prior Art Recently, cordless telephone devices have become popular due to the convenience of being able to make calls even when away from the filling machine. By the way, in this cordless telephone, in order to charge the slave station in off mode (charging can be done more efficiently and in a shorter time than in standby mode), the master station is also configured to notify the incoming call.

By the way, in such a configuration, if an existing telephone is connected to the master station for intercom calls, this telephone can notify incoming calls, but if the line is left switched for intercom, in other words, the outside line If the telephone is left disconnected, incoming call notifications cannot be made, so incoming call notifications are made based on incoming call signals detected by the master station. Incidentally, in the case where a handset is simply connected to a hybrid circuit without using an existing telephone for intercom, the incoming call can of course be announced by the master station monologue.

(c) Problems to be Solved by the Invention If the configuration is configured as described above, it will be difficult for the master station to distinguish between an intercom call and an outside line call, causing confusion to the user. became. This problem is particularly noticeable in, for example, a type of system in which intercom calls can be made at the master station, but calls to outside lines can only be made at the slave station. In other words, if the user at the parent station misunderstands an intercom call as an outside line call, he or she will have to search for where the slave station is located, resulting in unnecessary effort.

(d) Means for Solving the Problems Therefore, the present invention has been made in view of this point, and includes a sound generating means, a control means for controlling the sound generating means, and a call from an outside line in the master station. external line call signal detection means for detecting a signal and transmitting the detection signal to the slave station and giving the detection signal to the control means; and intercom call signal detection means for detecting the call signal from the slave station and giving the detection signal to the control circuit. and the slave station is provided with a notification means for notifying an incoming call by receiving a detection signal from the master station, and the control means controls the slave station so that the generated sound is different depending on the signal from each of the detection means. The sound generating means is controlled.

(E) Effect This allows the master station to know of an incoming call even when the slave station is in off mode, and to distinguish between the incoming notification and the intercom call from the slave station.

(f) Examples Examples of the present invention will be described below with reference to the drawings. Figure 1 is a diagram showing the configuration of a master station connected to a telephone line through terminals L1 and L. The telephone line is connected to a telephone set 2 and a hybrid transformer circuit 3 via an intercom changeover switch 1 that is released during an intercom call. It is connected. 4 is the transmitting section,
The groove bottom is so arranged that when a call signal from an outside line is supplied via a hybrid transformer circuit 3 and a bell signal from an outside line is detected by a bell signal detection circuit 5, a tone signal f is supplied. The bell signal detection circuit 5 is designed to generate an S output upon detection of a bell signal from an outside line. Reference numeral 6 denotes a receiving unit that receives the call signal and tone signals f, , f, from the slave station. The call signal is supplied to the outside line via the hybrid transformer circuit 3, and the tone signals f, , f are each received by the tone signal f. , detection circuit 7 and tone signal fj
A groove bottom is provided for detection by the detection circuit 8. When the tone signal f is detected by the detection circuit 7, the relay 9 is operated and the relay contact 10 is closed to connect to the outside line. 11 is a bell signal detection circuit 5
, tone signal f, and the output signal of the detection circuit 8. The output is connected to the charging circuit 12 for charging the slave station. Reference numeral 13 denotes a slave station calling switch, which is grooved so that when the switch is closed, the bell signal detection circuit 5 is driven at any time to generate a tone signal f1.

FIG. 2 is a diagram showing the groove bottom of the slave station, and 14 is a receiving section that receives the call signal and tone signal f1 transmitted from the master station, and the call signal is amplified by the low frequency amplification circuit 15. The tone signal f1 is detected by the tone signal f1 detection circuit 17 and reproduced by the speaker 16 to notify the person at the slave station that a call is being made. 18
is the call signal from the slave station through the microphone 19, the tone signal f generated by the tone signal f2 generation circuit 21 when the call switch 20 is closed, and the opening of the call switch 22 by which the slave station calls the master station. This is a transmitter that transmits a tone signal f and a dial pulse signal from the dial pulse generating circuit 24 at the bottom. Incidentally, when the call switch 20 is opened, all the circuits are energized, but when the call switch 20 is open and on standby, only the receiving circuit is energized. Of course, although not shown,
For example, a power switch such as that disclosed in Japanese Utility Model Application Publication No. 56-125661 can be used to cut off the power supply to both the transmitting section and the receiving section and put them in an off mode.

FIG. 3 is a diagram showing the bottom of the calling signal generation circuit 11 of the master station, in which the first switching transistor conduction is controlled by the output of the astable multivibrator 25 driven by the output S of the bell signal detection circuit 5. 26 and a second tone signal f, which is made conductive upon detection of the tone signal f by the detection circuit 8.
The bottom of the tank is a piezoelectric buzzer 28 driven by the switching transistor 27 and the first and second switching transistors 26 and 27 being conductive. Charging circuit 12 is charging terminal 2
9.30, a charging display resistor 31 and an LED 32 connected in series between the charging terminals, and a normally open charging switch 33 that is opened when the slave station is connected to the charging terminal 29.30 during charging. The charging terminal 30 is connected to the collector electrode of the first switching transistor 26 via a diode 34.

Next, the operation at the groove bottom will be explained.

First, when a call is received and a ringing bell signal is sent to the master station, the bell of the telephone 2 of the master station rings, and at the same time, the bell signal is detected by the bell signal detection circuit 5, and the S output becomes an astable multivib break. 25, the first switching transistor 26 is controlled to be conductive and the piezoelectric buzzer is intermittently driven. Then, when the tone signal f from the bell signal detection circuit 5 is further transmitted from the transmission unit 4 to the slave station, the slave station in the standby state detects the tone signal f+the tone signal f by the detection circuit 17, and the tone signal f is detected. By operating the amplifier circuit 15 and reproducing the tone signal f from the speaker 16, it is possible to simultaneously notify the slave station that there is an incoming call. Therefore, when the telephone 2 of the master station answers the call, the S output and tone signal f are no longer generated due to the stoppage of the bell signal, the calls at the master station and the slave station are also stopped, and the connection between the telephone 2 of the master station and the outside line is stopped. You can make a call using .

On the other hand, when the person at the slave station opens the call switch 20 and answers the call, the tone signal f is transmitted, and the tone signal f! from the slave station is transmitted. In the master station that receives the tone signal f, the relay 9 is operated upon detection of the tone signal f by the detection circuit 7, and the telephone line is connected when the relay contact 10 is opened. Therefore, it is possible to communicate with each other between the slave station and the outside line.

Next, when making a call to an outside line from the slave station, first close the call switch 20, then transmit the tone signal f, close the relay contact 10 as described above to connect the telephone line, and then generate a dial pulse. When a dial pulse is transmitted by the circuit 24, the dial pulse is sent to the outside line and calls the other party. If the other party answers the call, they can talk to each other.

Next, an explanation will be given of the intercom operation for freely communicating between parent and child. At this time, first, the intercom changeover switch 1 is released to disconnect the telephone set 2 from the telephone line, and then the slave station calling switch 13 is closed to transmit the tone signal r, and the slave station receives the tone signal f as described above. speaker 16
A slave station can be called by being played back.

When the slave station responds to the call and closes the call switch 20, the tone signal f is transmitted and relay contact 1 is activated as described above.
0 is opened and the line between parent and child is connected.

In this way, the parent and child can talk freely through the line connection with the slave station.

On the other hand, when the slave station calls the master station to make a call, the slave station first opens the call switch 20 and sends a tone signal f.
The line between the parent and child is connected by opening the relay contact 10 of the parent station as described above.

Thereafter, when the master station calling switch 22 is opened, a tone signal f is transmitted. This tone signal f.

Upon receiving the tone signal f, the tone signal f is detected by the detection circuit 8, and the calling signal generation circuit 11
The second switching transistor 27 is turned on to drive the piezoelectric buzzer 28 to generate a continuous sound. Therefore,
When the person at the master station learns of the intercom call from the slave station, he picks up the receiver of the telephone set 2 and answers the telephone, and at the same time releases the intercom changeover switch 1 and disconnects the outside line. In this way, it is possible to talk between parent and child as an intercom.

By the way, in this way, if a call comes in during a call using the intercom, the bell on phone 2 will not ring because the master station phone 2 is disconnected from the outside line by releasing the intercom changeover switch 1. However, when the bell signal is detected by the bell signal detection circuit 5, the astable multi-byte break 25 of the calling signal generation circuit 11 is driven, and the first switching transistor 26 is controlled to be conductive, so that the piezoelectric buzzer 28 is driven intermittently. At the same time, the first switching transistor 26 becomes conductive and the LED 32 of the charging circuit 12 lights up to notify the person at the master station that a call is being made. Therefore, the person at the master station who learns of the incoming call informs the slave station of this fact, ends the intercom call, and closes the intercom changeover switch 1, thereby being able to talk to the person on the outside line. In addition, the LED 32 of charging circuit 2 connects the charging terminals 36 and 37 of the slave station to the charging terminals 29 and 30 of the master station.
When the charging switch 33 is closed, the battery lights up to indicate that charging is in progress.

Therefore, if a call is received from an outside line while the slave station is in off mode and attached to the master station for charging, the bell signal detection circuit 5 and the ringing signal generation circuit 11 will respond even if the intercom changeover switch 1 is open. Incoming calls can be notified, and slave stations can be charged efficiently. Further, although there is only one piezoelectric buzzer 28, the calling signal generation circuit 11 can generate a piezoelectric buzzer 28 depending on the input signal.
The driving method of the intercom has been changed, and the ring tone for the intercom and the ring tone for the outside line are different, so even if the intercom switch 1 is open, the master station can determine which one it is, and the receiver can be turned off. Before picking up the phone, you will know whether to set the intercom changeover switch 1 to the outside line side or the intercom side.

In addition, in the above-mentioned FvI system, since the master station alone performs incoming call notification, it is also possible to simply connect the handset to the hybrid transformer circuit without using an existing telephone.

(E) Effects of the Invention The present invention has the above-mentioned features, and even if the slave station is placed in the off mode and attached to the charging device of the master station, it is possible to know incoming calls, and the slave station can be efficiently operated. Can be charged. This makes it possible to distinguish between the incoming notification and an extension call from a slave station, and also from an emergency extension call, making it possible to provide a very convenient cordless telephone.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of the master station of the cordless telephone device of the present invention, FIG. 2 is a diagram showing the groove bottom of the slave station, and FIG. 3 is a diagram showing the configuration of the main part of FIG. 1. . ■...Interphone changeover switch, 2...Telephone, 3...Hybrid transformer circuit, 4...Transmitting section, 5...Bell signal detection circuit, 6...Receiving section, 7...
- Tone signal f, detection circuit, 8... Tone signal f, detection circuit, 11... Calling signal generation circuit, 12... Charging circuit, 14... Receiving section, 18... Transmitting section, 20.・
・Call switch, 22... Master station call switch, 24
...Dial pulse generator, 33...Charging switch.

Claims (1)

[Claims] (1) A master station equipped with a transceiver connected to a telephone line,
In a cordless telephone device comprising a slave station wirelessly connected to the master station, the slave station is connected to an outside line via the master station, and a call can be made between the parent and the child, wherein the master station includes a sound generating means; a control means for controlling the sound generating means; an outside line calling signal detecting means for detecting a calling signal from an outside line and transmitting a detection signal to the slave station and providing the detection signal to the controlling means; and detecting a calling signal from the slave station. and intercom call signal detection means for supplying a detection signal to the control circuit, and the slave station is provided with a notification means for notifying an incoming call by receiving the detection signal from the master station, and the control means A cordless telephone device characterized in that said sound generating means is controlled so that the generated sound varies depending on a signal from said detecting means.