JPH0210694Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention uses a transmitter/receiver connected to an existing telephone set as the master station, and connects this to a portable slave station wirelessly, thereby establishing a connection between the slave station and an outside line. The present invention relates to a cordless telephone device that can be connected and use a calling function to make a call between an existing telephone of a master station and a slave station.

(B) Prior Art Cordless telephone devices have recently become popular due to the convenience of being able to make calls even when you are away from the telephone, and are configured so that calls can be made between a master station and a slave station, and calls received at one station can be transferred to the other station. There is. On the other hand, portable slave stations are generally configured with push keys, and are configured to generate a confirmation sound to indicate that key operations have been performed reliably. However, the slave station of a conventional cordless telephone device has an oscillator that generates a calling signal for calling the master station and an oscillator that generates a key operation confirmation sound, making the circuit configuration complicated.

(c) Purpose This invention aims to solve the above-mentioned problems.

(d) Configuration The present invention is configured so that a single oscillator generates a calling signal and key operation confirmation sound.

(e) Examples Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 shows the configuration of the master station, which is connected to the telephone line through terminals L ₁ and L ₂ along with telephone 1, which is connected to the telephone line through terminals L 1 and L 2 . The circuit 3 is supplied with the output of a tone signal f ₁ generator 4 which generates a tone signal f ₁ for paging the slave station. 5
is a reception unit that receives a call signal from a slave station and a tone signal f ₂ for calling the master station; the call signal is supplied to the outside line via a hybrid transformer circuit 3; the tone signal f ₂ is sent to a tone signal f ₂ detection circuit 6; is configured to be detected. The detected tone signal f ₂ is configured to be reproduced by a speaker 8 via a low frequency amplifier 7.

FIG. 2 is a diagram showing the configuration of the slave station, where 9 is a receiving section that receives the call signal and tone signal f ₁ transmitted from the master station. On the other hand, the tone signal f ₁ is detected by the tone signal f ₁ detection circuit 12 and similarly reproduced by the speaker 11. 13 is a call signal from the slave station through the microphone 14, and a tone signal when the slave station calls the master station by closing the call switch 15.
A tone signal f ₂ generated by the f ₂ generation circuit 16,
This is a transmitter that transmits the dial pulse signal from the dial pulse generation circuit 17. Reference numeral 18 denotes a key input circuit consisting of a numeric keypad for inputting a dial number, and is configured to drive the dial pulse generation circuit 17 and the tone signal f ₂ generation circuit 16 with the key output. Furthermore, the tone signal f ₂ is sent to the low frequency amplifier circuit 10.
It is configured to be played back by the speaker 11 via the .

FIG _{. 3 is a diagram showing the configuration of the tone signal f 2 generating} circuit 16 section in FIG. When a key operation is performed and the output of the key input circuit becomes low level, and when the call switch 15 is operated and the base of the first transistor 20 becomes low level via the diode 21, conduction occurs, and the tone signal f ₂ It is configured to supply power to the oscillator 19. Reference numeral 22 denotes a second transistor provided between the tone signal f ₂ oscillator 19 and the transmitter 13, and is controlled by closing the call switch 15.

Next, the operation of the present invention having such a configuration will be explained. Since the communication operations by the transmitting section and the receiving section of the master station and the slave station are well known, the explanation thereof will be omitted, and the operation of generating a confirmation tone and the calling operation by key operations, which are the features of the present invention, will be explained.

First, when making a call from a slave station, when a dial number is input using the numeric keys of the key input circuit 18, a dial pulse corresponding to the dial number is generated by the drive of the dial pulse generating circuit 17, and a dial pulse corresponding to the dial number is generated from the transmitter 13. It is sent to the master station, but
At this time, each time the numeric keypad is operated, the key input circuit 1
8's output 18' becomes low level and makes the first transistor 20 conductive, so that the tone signal f ₂
A tone signal f ₂ is generated by driving the oscillator 19 and reproduced by the speaker 11. Therefore, it is possible to confirm that key input has been performed. At this time, the diode 21 is non-conductive and the second transistor 22 is also non-conductive, so the tone signal f ₂ is not transmitted to the master station.

Next, when calling the master station from the slave station, when the call switch 15 of the slave station is closed, the diode 21
When the first transistor 20 is turned on, the second transistor 22 is turned on, so that the tone signal f ₂ oscillator 19 is driven, the tone signal f ₂ is reproduced by the speaker 11, and the second transistor 22 is turned on.
The signal is supplied to the transmitter 13 via the transistor 22 and transmitted to the master station. In the master station that has received the tone signal f ₂ , the tone signal f ₂ is detected by the tone signal f ₂ detection circuit 6, and the tone signal f ₂ is reproduced by the speaker 8 via the low frequency amplifier 7, and the slave station calls. Notify that you are there.

On the other hand, when calling a slave station from the master station, when the call switch 23 of the master station is closed, the tone signal f ₁
A tone signal f ₁ is generated by driving the generating circuit 4, and is transmitted from the transmitter 2 to the slave station. When the slave station receives the tone signal f ₁ from the master station, the tone signal f ₁
It is detected by the detection circuit 12 and reproduced by the speaker 11 via the low frequency amplification circuit 10. Therefore, it notifies that the master station is calling. In either case, after making a call to connect the line between parent and child,
Parents and children can talk over the phone.

(f) Effects As described above, the cordless telephone device of the present invention serves both as a signal generator that generates a key operation confirmation tone in the slave station and as a signal generator that generates a calling signal for calling the master station from the slave station. Since the circuit configuration is simple, it is highly effective when applied to portable slave stations that require miniaturization.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the configuration of the master station of the cordless telephone device, Fig. 2 is a diagram also showing the configuration of the slave station, and Fig. 3 is a diagram showing the configuration of the slave station.
This figure is a diagram showing the configuration of the tone signal f ₂ generating circuit of FIG. 2. DESCRIPTION OF SYMBOLS 1...Telephone, 2...Transmitter, 4...Tone signal _f1 generation circuit, 5...Receiver, 6...Tone signal
f ₂ detection circuit, 9...Receiving section, 12...Tone signal
_f1 detection circuit, 13...transmission unit, 15...call switch, 16...tone signal _f2 generation circuit, 17...
...Dial pulse generation circuit, 18...Key input circuit.

Claims (1)

[Scope of utility model registration request] A cordless telephone device consists of a master station equipped with a transceiver connected to a telephone line, and a slave station connected wirelessly to the master station, and the slave station is connected to an outside line via the master station. The station includes a key input circuit composed of a numeric keypad or the like, a call key for calling the master station, a signal generator driven by operation of the key input circuit and the call key, and a speaker supplied with the output of the signal generator. 1. A cordless telephone device comprising a transmitting section to which the output of the signal generator is supplied via switching means that is closed by operation of the call key.