JP2604661Y2 - Home telephone equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home telephone apparatus, and more particularly to a home telephone apparatus which can output an alarm sound to a telephone terminal connected to a home telephone exchange when a security signal is output from a security circuit.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional home telephone apparatus includes a home telephone exchange 31 and a telephone terminal T.
E11 to TE16 (the number of telephone terminals is assumed to be 6 for explanation)
The terminal T11 has a central office line L11 and terminals T13 to T18.
Are connected to telephone terminals TE11 to TE16, respectively.

The home telephone exchange 31 has an exchange connection switch 35, current detection circuits 36 to 41, a call signal transmission circuit 33 for transmitting a call signal when the telephone terminal is in a standby state, and a call signal for transmitting an interrupt sound when the telephone terminal is in a call state. The exchange connection switch 35 is connected to the terminal T11, and the pins P11 to P16 are connected to the current detection circuits 36 to 41, respectively.

[0004] Exchange connection switch 35, current detection circuit 36
To 41, a calling signal sending circuit 33, an interrupt sound sending circuit 34,
Interrupt sound oscillator 34a and switches 42a to 42f, 43
a to 43f are connected to the CPU 50 by control lines, and the output sides of the calling signal transmitting circuit 33 and the interrupt sound transmitting circuit 34 are connected to terminals T13 to T18 via switches 42a to 42f and 43a to 43f, respectively. .

The switches 42a-42f, 43a-
Reference numerals 43f denote normally open contacts, which are separately controlled and closed by the CPU 50, respectively.

In such a home telephone device,
When called from the central office line L11, the telephone terminal TE11 in a standby state
A calling signal is sent from the calling signal sending circuit 33 to .about.TE16. For example, when the telephone terminal TE11 responds, the CPU 5
Knows that 0 has responded to the telephone terminal TE11 via the current detection circuit 36, and controls the exchange connection switch 35 to connect the pins P10 and P11 of the exchange connection switch 35, so that the telephone terminal TE11 is connected via the central office line L11. To talk to the other party.

When the telephone terminals TE11 to TE16 are on an extension call, the interrupt sound generated by the interrupt sound oscillator 34a is transmitted to the telephone terminals TE11 to TE16 during the call by the interrupt sound transmitting circuit 34 and the CPU 50. The signals are sent out via the individually controlled and closed switches 43a to 43f.

On the other hand, for example, gas leak alarm, fire alarm,
The security circuit 32 that issues an alarm such as a trespasser is
These security signals f11 are transmitted to the security amplifier 32.
a to the alarm speaker 32b via the security cable L12. The warning speaker 32b is mounted on a ceiling or the like as appropriate.

[0009]

In such a home telephone apparatus, since the security circuit 32 is a separate information processing system, there is a problem that the home telephone apparatus and information processing cannot be integrated.

Therefore, in order to provide the telephone terminals TE11 to TE16 and to issue the security signal f11 to each room, a large number of alarm speakers 32b and a security cable L12 are required, and the construction cost and the maintenance cost cannot be reduced. There is.

[0011]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned difficulties, and has as its object to provide a home telephone apparatus which integrates information processing of a home telephone apparatus and a security circuit to reduce construction costs and maintenance costs. I do.

[0012]

In order to achieve this object, a home telephone apparatus according to the present invention connects a central office line to a telephone terminal via a current detection circuit via an exchange connection switch of the home telephone exchange, and connects the central office to the home telephone exchange. Is
It has a security circuit that outputs a security signal,
The home telephone exchange operates when a security signal is input, and the telephone terminal transmits a paging signal via a paging switch when the telephone terminal is in a standby state by detection of the current detection circuit. An interrupt sound transmission circuit for transmitting a security signal as an interrupt sound via an interrupt switch in a call state upon detection is provided.

[0013]

In this home telephone apparatus, when a security signal is input from the security circuit to the home telephone exchange, when the telephone terminal is in a standby state by detection of the current detection circuit, the call signal is transmitted from the call signal transmission circuit to the telephone terminal via the call switch. A call signal is sent. Further, when the telephone terminal is in a talking state by the detection of the current detection circuit, the security signal is transmitted from the interruption sound transmission circuit to the telephone terminal via the interruption switch as an interruption sound.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the home telephone apparatus according to the present invention will be described in detail with reference to FIG.

As shown in FIG. 1, the home telephone apparatus of the present invention includes a home telephone exchange 1 to which a central office line L1 and telephone terminals TE1 to TE6 are connected, and a security circuit 2 for outputting a security signal f1 to the home telephone exchange 1. Have.

The home telephone exchange 1 operates when a security signal f1 is input, and the telephone terminals TE1 to TE1.
A call signal sending circuit 3 for sending a call signal when TE6 is in a standby state, and an interrupt sound sending circuit 4 for sending a security signal f1 as an interrupt sound when the telephone terminals TE1 to TE6 are in a call state.

That is, the home telephone apparatus of the present invention comprises a home telephone exchange 1 and telephone terminals TE1 to TE6 (the number of telephone terminals is assumed to be 6 for the sake of explanation). A terminal line L1 is connected to a terminal T1, and a terminal T3 is connected to the terminal T3. ~ Telephone terminal TE1 for T8
To TE6 are respectively connected. Further, a security circuit 2 for outputting a security signal f1 is connected to the terminal T2.

The home telephone exchange 1 includes an exchange connection switch 5, current detection circuits 6 to 11, a call signal transmission circuit 3 for transmitting a call signal when the telephone terminal is in a standby state, and a security signal f1 when the telephone terminal is in a call state. Interrupt sound transmitting circuit 4 for transmitting sound, interrupt sound oscillator 4a, security interface circuit 19, call switches 12a to
12f, interrupt switches 13a to 13f and CPU 20. The pin P0 of the exchange connection switch 5 is connected to the terminal T1, and the pins P1 to P6 are connected to the current detection circuits 6 to 11, respectively.

The input side of the security interface circuit 19 is connected to the terminal T 2, and the output side is connected to the input side of the interrupt sound transmission circuit 4.

Further, an interrupt sound generator 4a is connected to the input side of the interrupt sound sending circuit 4.

The security interface circuit 19,
Exchange connection switch 5, current detection circuits 6 to 11, calling signal sending circuit 3, interrupt sound sending circuit 4, interrupt sound oscillator 4a and calling switches 12a to 12f, interrupt switches 13a to 1
3f and the CPU 20 are connected by a control line, and the output side of the calling signal sending circuit 3 and the interrupt sound sending circuit 4 are connected to a calling switch 12a.
12f and 13a to 13f, respectively, the terminal T3
To T8.

The call switches 12a to 12f and the interrupt switches 13a to 13f are each constituted by normally open contacts, and are separately controlled and closed by the CPU 20.

In the home telephone apparatus thus configured, when a call is made from the central office line L1, the call is detected by the CPU 20 via the exchange connection switch 5, and under the control thereof, the current detection circuits 6 to 11 detect the call and wait. The call signal transmitting circuit 3 sends the signal to the telephone terminal TE1 to TE6
Call switches 12a, 12f controlled and closed at 0
A call signal is sent out via. For example, a telephone terminal TE
When the response is 1, the CPU 20 knows that the telephone terminal TE1 has responded via the current detection circuit 6, and controls the exchange connection switch 5 to connect the pin P0 and the pin P1 of the exchange connection switch 5, so that the telephone terminal TE1 A call can be made with the other party via the local line L1.

Also, when the telephone lines TE1 to TE6 are in an extension call with each other by the detection of the current detection circuits 6 to 11, the local line L
When called from 1, the telephone terminals TE1 to TE6 during a call
In contrast, the interrupt sound oscillator 4 separately controlled by the CPU 20
The interrupt sound oscillated at a is transmitted from the interrupt sound sending circuit 4 to the CPU 2.
0, independently controlled and closed interrupt switches 13a, 1
It is sent via 3f.

On the other hand, when the security circuit 2 for issuing a gas leak alarm, a fire alarm, an illegal intruder alarm, etc. sends these security signals f1 from the terminal T2 to the security interface circuit 19, the CPU 20 detects them. In response to the detection of the current detection circuits 6 to 11, the telephone terminals TE1 to TE6 in the standby state receive the control of the CPU 20 and receive a call signal from the call signal transmission circuit 3 in the same manner as the CPU 20.
Is transmitted through the call switches 12a to 12f under the control of, and when the telephone terminal TE1 to TE6 is hooked off, the security signal f1 is output from the interrupt sound transmitting circuit 4 as an interrupt sound.
Interrupt switch 1 controlled and closed separately by PU 20
It is transmitted via 3a and 13f.

When the telephone terminals TE1 to TE6 are in an extension call by the detection of the current detection circuits 6 to 11, these security signals f1 are transmitted to the security interface circuit 19, and the interruption sound transmission circuit is controlled by the CPU 20. 4 through the interrupt switches 13a and 13f which are separately controlled and closed by the CPU 20, and are connected to the telephone terminal TE.
It is transmitted as an interrupt sound to 1 to TE6.

[0027]

As is clear from the above description, according to the home telephone device of the present invention, the information processing of the home telephone device and the security circuit is integrated, and the construction cost and the maintenance cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a home telephone device according to the present invention.

FIG. 2 is a block diagram of a conventional home telephone device.

[Explanation of symbols]

 1 ... home telephone exchange 2 ... security circuit 3 ... ringing signal transmission circuit 4 ... interrupt sound transmission circuit 5 ... exchange connection Switches 6-11 Current detection circuits 12a-12f Call switches 13a-13f Interrupt switches TE1-TE6 Telephone terminals L1 ... ..... office line f1 ..... security signal

Claims (1)

(57) [Scope of request for utility model registration] 1. A through current-detecting circuit switched connection switch (5) of the station line (L1) the home telephone exchange (1)
(6 to 11) to the telephone terminal (TE1 to TE6) , and the home telephone exchange has a security signal (f).
And secure circuit (2) for outputting a 1), wherein the home telephone exchange to operate when the security signal is input, the telephone terminal said current sensing
Call scan the paging signal in a standby state by detecting a calling circuit output
A call signal transmitting circuit (3) for transmitting via a switch (12a to 12f) ;
A home telephone device comprising: an interrupt sound transmitting circuit (4) for transmitting the security signal as an interrupt sound through interrupt switches (13a to 13f) in a call state upon detection .