JPH033548A - Home telephone system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a home telephone system, and more specifically to a home telephone system in which a master telephone, slave telephones, etc. are connected.

Conventional devices A home telephone system is constructed by connecting the main device and the telephone, and between the master telephone and the slave telephone by multiple wires such as a telephone line, a control line, and a power supply line. Controls such as calling an internal line and putting an outside line on hold are carried out via control lines, and power supply to relays, amplifiers, etc. is carried out via power lines.

Problems to be Solved by the Invention However, according to the configuration of the prior art described above, there is a problem that the number of wires connecting between telephones is large, which makes the system complicated even in a small-scale system, and the degree of use is low despite its convenience. There is.

The present invention solves these conventional problems,
The object of the present invention is to provide a home telephone system that can connect telephones with a simple wiring configuration regardless of the scale of the system.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a first switching section for switching to an outside line call or an extension call for the base unit itself, and a first switching unit for switching to an outside line call for the handset or an extension call for the handset. a second switching section for switching to the carrier signal data, a carrier signal data transmitting/receiving section for transmitting and receiving the carrier signal data, and a control circuit for controlling the first switching section, the second switching section, and the carrier signal data transmitting/receiving section. , a base unit including a blocking filter that prevents the carrier signal data from leaking to an outside line; a first power supply circuit that supplies power during standby and during a call; and a second power supply circuit that supplies power only during standby. a circuit, a carrier signal data transmitting/receiving unit for transmitting and receiving carrier signal data, and the first power supply circuit;
The device is characterized by being composed of a slave unit including a second power feeding circuit and a carrier signal data transmitting/receiving unit that controls the carrier signal data transmitting/receiving unit, and a pair of wiring connecting the base unit and the slave unit. do.

According to the present invention, the control circuit of the base unit has a function of controlling the entire control circuit system of the base unit, and the control circuit of the slave unit follows the control of the control circuit of the base unit or is controlled via the control circuit of the base unit. control system operation.

These controls are performed by transmitting and receiving data between the carrier signal data transmitting and receiving units in the parent device and the child device via a pair of wiring that connects the parent device and the child device.

As a result, the switching units in the base unit and slave unit are switched as appropriate, and the standby state, internal call, and external call enabled states are established. Note that telephone calls are also made via the pair of wires.

Further, power is supplied from the parent device to the slave device via this pair of wirings.

As described above, according to the home telephone system having the configuration of the present invention, the base unit and the slave unit are connected through a pair of wires, so that the wiring connections and system configuration are extremely simplified.

Embodiment FIG. 1 is a diagram showing the configuration of a home telephone system according to an embodiment of the present invention. In the figure, MT is a base unit, RT
indicates a slave unit.

First, to explain the configuration on the base unit MT side, B and F are blocking filters that prevent the carrier signal from leaking out to the outside line, rYl is a relay contact, and RYI is a control coil that connects and disconnects the contact. .

ry2 and RY2, and ry4 and RY4 also indicate relay contacts and control coils that constitute one set of relays. Also, HoSl-
1, H, 51-2 are hook switches, Tt is a telephone talking section, CI is an incoming call detection circuit, Pl is a power supply, PIFl is a power supply circuit, 08C1 is a ringing tone generation circuit, CNT1 is a control circuit, i/F1 is data It is a signal transmitting/receiving unit, and Kl is an operation key consisting of an outside line key, an extension key, a hold key, etc.

Next, to explain the configuration of the handset RT side, r173 is the contact of the relay, RY3 is its control coil, POl, PO
2 are the 11th and 2nd power supply circuits, H, 52-s,
H, 82-2Vi Mitsukwitch T2 is the talking part of the telephone, 08C2 is the ringing tone generation circuit, CNT2 is the control circuit,
i/F2 is a data signal transmitting/receiving unit, and K2 is an operation key including an outside line key, an extension key, a hold key, etc. The straddle is the terminal of the base unit, the end is the terminal of the slave unit, and L is the outside line terminal.

Next, the operation of the above embodiment will be explained with reference to FIG. FIG. 1 shows a standby state, in which slave units R and T are in a state where power is supplied from base unit MT. That is, from the power supply P1 of the main unit MT, the power supply circuit PIF1 → relay contact ry2 →
The loop of terminal l enters terminal g of slave unit RT, and the first terminal of slave unit
Power is supplied through a path from the power supply circuit Pot and relay contact ry3 to the second power supply circuit PO2.

Now, when there is an incoming call from the outside line terminal, the incoming call detection circuit CI of the base unit MT operates and sends a signal to that effect to the control circuit CNTl. As a result, the control circuit CNT1 drives the ringing oscillation circuit 0801 and causes the speaker SP+ to emit a ringing tone. Further, the control circuit CNTl sends out a carrier signal modulated by the paging control data from the data transmitting/receiving unit I/F1. This modulated carrier signal enters the data transmitting/receiving section i/Fz of the slave unit T via the master unit terminal e and the slave unit terminal g, where it is demodulated and input to the control circuit CNT2. As a result, the control circuit CNT2 drives the paging oscillation circuit 08C2 and drives the speaker SPz. In this way,
An incoming call between the parent and child MT and the handset RT is established.

Next, a case where an outside line call is made using the base unit MT will be explained. Hook Ino fH, S+- due to off-hook of main unit
When 1, I-1, 5r-2 close, relay contact ry1
(control coil RYt) is operated to connect the talking section T1 to the outside line, making it possible to make a response call. At this time, control circuit C
NT 1 sends data indicating that base unit MT is using an outside line to the data transmitting/receiving unit! The data is input to the control circuit CNT2 through a loop of /F1→terminal e→terminal l→data transmitting/receiving unit i/F2 of slave unit RT. Then, the display LED 2 lights up to indicate that the outside line is in use.

At this time, the secret call function is activated, so even if you press 2 on the operation key, you will not be able to connect to an outside line from the handset RT.

Next, a case where an outside line call is made using the handset RT will be explained. When handset rtT goes off-hook, hook switch H,
52-1 is closed, and the communication part T2 is connected to the terminal l'.

At the same time, the hook switch H, 52-2 operates the control circuit CNT2, and sends the data indicating that the handset is using the outside line to the data transmitting/receiving unit +/P2→terminal j.
'→Terminal g→Sent to control circuit CNTt in a loop of data transmitting/receiving unit i/Fl of base unit MT. As a result, the control circuit CNT
1 switches relay contact ryz (control coil 1% Y2). Therefore, the handset RT can make an outside line call through relay contact ry2→blocking filters B and F→external line terminal. At this time, the control circuit CNTl turns on the indicator LED.
By lighting 1, it is displayed that the handset RT is in use of an outside line, and the secret function is activated to prevent an outside line connection by pressing 1 on the operation key.

On the other hand, the control circuit CNT2 of slave unit 1'LT is a relay contact ry.
3 (control coil RY3) to switch the ringer oscillator 08.
Disconnect the load from C2. This ensures the necessary power for the handset RT to make a call.

Furthermore, if you want to make a call to an outside line, please call the parent@MT and handset 11.
．． After both T go off-hook, press 1 or 2 on the operation key.
By pressing , the talking section Tl or T2 is connected to the outside line through the same system operation as when answering an outside line, and then a dialing signal is sent from the dialing circuit built in the talking sections T1 and T2 to call the other party. After calling, you can make a call.

Next, the case of making an extension call will be explained. First, the main unit M
When T calls the slave unit RT, after the base unit MT goes off-hook, he presses the operation key Kl for internal communication. As a result, when the control circuit CNTl sends out a carrier signal modulated by the extension call data from the data transmitting/receiving unit 1/Fl, the slave unit is controlled in a loop of terminal l→terminal l→data transmitting/receiving unit i/Fz of the slave unit. It is sent to circuit CNT2. As a result,
The control circuit CNT2 drives the ringing tone oscillator 08C2,
Make speaker SP2 sound.

On the other hand, when the slave unit RT calls the base unit MT, the route is reversed, that is, from the control circuit CNT2 to the data transmitting/receiving unit 1.
/F2 → Terminal → Terminal l → Data transmitting/receiving section i /l;I
A ring tone is emitted along the route I→control circuit CNTl-+ring tone oscillator 08CI→speaker SP1.

For subsequent calls, the communication section T1 of the base unit MT → hook switch H, 51-1 → relay contact ryl → relay contact ry
2 → terminal g → terminal l → hook switch ratio of slave unit RT 52
This is done by an extension call circuit formed by a loop of -1→talk section T2.

In the case of an extension call, sufficient power is supplied from the power supply P1 of the base unit MT through the power supply circuit PI Fl, so the relay contact ry3 of the slave unit RT is not switched.

Further, when the main unit MT wants to put the outside line on hold during an outside line call, the user operates the operation key Kl. As a result, the control circuit CNT1 closes the relay contact r3/4 to hold the outside line in the hold circuit H, and also controls the relay contacts ryl and ry2.
switch to the extension side.

Similarly, handset 11. If T wants to put the outside line on hold while he is talking on an outside line, press 2 on the operation key. In this case,
First, the control circuit of the handset RT ('NT2 → data transmitting/receiving unit I/
F2→terminal e'→terminal e→data transmitting/receiving section r/F t→
Pending control data is sent in the loop of control circuit CNT1. As a result, the control circuit CNT1 performs the system operation described above and puts the outside line on hold.

To answer the outside line again from the hold state, press operation key Kl.
Or, by operation 2, the hold state is canceled and the relay contact group is switched to the outside line side.

In this way, according to the embodiment of the present invention, the master device MT and the slave device R
, T can be connected using only one pair of two-wire wiring to form a home telephone system, which simplifies the system configuration.

Effects of the Invention As is clear from the above embodiments, the present invention has the following effects.

Connection number for connecting the parent device and child device! The system configuration is simplified because the control power supply, voice signal for communication, and control carrier data are superimposed on the (2 wires). This allows existing two-wire wiring to be used, increasing the usability of the system.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a home telephone system according to an embodiment of the present invention. MT...Main unit, RT...Slave unit, B, Ii''...P O
, y King filter, 几Y1. RY2, RY3
, RY4...Relay control coil, ryl, r
y2, ry3, ry4- relay contact, H, 5
1-t, H081-2, ratio 82-1. H, 52-
2...Hook switch, TI, T2...Telephone talking section, CI...Incoming call detection circuit, PL...Power supply, PI
Fl: power supply circuit, Po1: first power supply circuit, P
o2...Second power supply circuit, 08C1゜08C2...
Ringing tone generation circuit, CNT1. CNT 2...Control circuit, i/Fx, i/Fz...Data signal transmission/reception unit, K
t. K2...Operation key group, 8Pt, SF3...Speaker, LEDI. LED 2...Display, l, e...terminal, L...external line terminal.

Claims (1)

[Claims] A first switching unit for switching to an external line call or internal line call for the base unit itself; a second switching unit for switching to an external line call for the handset unit or an internal line call with the handset unit; and a second switching unit for transmitting and receiving carrier signal data. a control circuit that controls the first switching section, the second switching section, and the carrier signal data transmission and reception section; and a blocking filter that prevents the carrier signal data from leaking to an outside line. a base unit, a first power supply circuit that supplies power during standby and when talking, a second power supply circuit that supplies power only during standby, a carrier signal data transmitting/receiving unit for transmitting and receiving carrier signal data; A slave unit including a power supply circuit, a second power supply circuit, and a carrier signal data transmitting/receiving unit that controls a carrier signal data transmitting/receiving unit, and a pair of wiring connecting the base unit and the slave unit. A home telephone system featuring: