JPH0358559A - Telephone system - Google Patents

Abstract

PURPOSE:To attain 3 functions of telephone function, interphone function and audio function by providing a hand-free talking circuit connecting to a telephone slave set or an interphone and a circuit sending an output of an audio equipment to the hand-free telephone slave set via a master set respectively. CONSTITUTION:A master set 11 is so configurated that a 2-wire telephone slave set 13, an interphone 14 and audio equipments 15 (such as radio receiver, television receiver, CD player, tape recorder) are connectable to the master set 11 in addition to a hand-free telephone set 12. The hand-free telephone set 12 connects a hand-free telephone speech circuit 37 to a talking line connecting to a 2-wire telephone slave set 13 or an interphone 14 via the master set 11 and provided with an audio output circuit 50 able to send a BGM of the audio equipment 15 via the master set 11. Thus, the 3 functions as telephone function, interphone function and audio function are obtained with a small sized and simple system without a tuner circuit.

Description

[Detailed Description of the Invention] [Industrial Field of Icheon] The present invention relates to a telephone system. [US technology 1] Conventionally, an intercom with a radio as described in Japanese Utility Model Application Publication No. 152/1982 has been proposed. This Radio Company intercom is an intercom device with a built-in radio device. [Problems to be solved by System No. 11] However, the above-mentioned conventional technology has the following problems (1) and (2). ■It is simply a combination of an intercom device and a radio device, and has no telephone function. ■Radio! By incorporating the A position, a tuner circuit is required and the size becomes large. The purpose of the present invention is to realize 39 functions including a telephone function, an intercom function, and an audio function in a small and simple system. [Means for Solving the Problems] The present invention provides a telephone system including a main device connected to a telephone office line and a hands-free telephone connected to the main device. is equipped with a telephone handset connection circuit, an intercom connection circuit, and an audio device input circuit, and the handsfree telephone handset has a handsfree communication circuit connected to the telephone handset or intercom via the main device. , -I is equipped with an audio output circuit capable of transmitting the output of the audio device via the II-II device. "Function" According to the invention, the following three functions (A) to (C) are realized. (A) Telephone function When an incoming signal from a telephone office arrives at the main device, the main device is connected Nowadays, if the hands-free telephone or telephone handset has a dial call function, it is also possible to make an outside call through the main device. (B) Intercom function When intercom call start information from the intercom connected to the main device is transferred to the main device, an intercom call is performed between the hands-free telephone or telephone handset connected to the main device and the intercom. (C) Audio function If you connect an audio device to the audio device input circuit of the '9+1'? and activate the hands-free telephone's audio output "I1 path," the output of the audio device will be sent to the hands-free telephone. That is, according to the present invention, the three functions of a telephone function, an intercom function, and a communication function can be realized in a small and simple system without a tuner circuit. [Example] Part 1 One reason is a schematic diagram showing an example of the telephone system of the present invention, Fig. 2 is a block diagram showing an example of a T device constituting the telephone system of the present invention, and Fig. 3 is a diagram of a handset constituting the telephone system of the present invention. 1 is a block diagram showing an example of a free telephone set. The telephone system IO includes telephones I1 and 1 as shown in FIG.
The main unit 211l is connected to the main unit 2tll, and the hands-free telephone J112 (a telephone that allows you to talk without using your hands) is connected to the main unit 2tll. At this time, in addition to the hands-free telephone l2 described in L, the tenth device 1l is connected to a two-wire telephone handset 13, an intercom 14, and an audio device 15 (radio, television, CD player, tape recorder, etc.). It is composed of. 1: The device 11 is constructed as shown in FIG. 1! l-Main outfit? 1l1 has a ringer circuit 16 branch-connected to a telephone line connected to the telephone office line, and is equipped with a control switching circuit 17 for connecting the hands-free telephone 12 and the telephone handset 13 to this telephone line. There is. The ringer circuit 16 includes a rectifier l8 and a ringer IC 19. The control switching circuit 17 includes relays 11 and 12, and includes photocouplers 21 and 22. Relay messages 1 and 2 are switched and controlled by the CPU 23, and are connected to the a contact during standby and for an outside line call, and are connected to the b contact for intercom calls. Hotokabura 2l, 22
is the incoming call status of hands-free phone l2 and telephone handset l3,
The response state is detected and the detection result is transferred to the CPU 23. Also, ten books. fill is hands-free telephone 12'
．． If talking handset l3 is provided with an intercom connection circuit 24 for connecting an intercom l4. The intercom connection circuit 24 includes a button press detection circuit 25 that detects button press information of the intercom l4. The button press information of the button press detection circuit 25 is transferred to the CPU 23. The CPU 23 switches and controls the relay exchange 3, connects the relay 13 to the a contact point during standby and intercom calls, and sends a ping pong sound to the intercom 14. Sometimes, relay AC 3 is connected to B contact. The main device 11 also includes an audio device input circuit 26 to which the audio device 15 is connected. The audio equipment input circuit 26 includes an input terminal 27. The sound output (hereinafter referred to as BGM) of the audio device 15 is sent to the hands-free telephone 12 via an audio line. The main device 11 also includes a melody sending circuit 28. The melody sending circuit 28 includes a melody 4 IC 29. The melody IC 29 is driven by the CPU 23, and when it sends the extension ring tone and call hold tone to the hands-free telephone 12 and the telephone handset 13 via the telephone line, the melody IC 29 sends a ping-pong tone for an intercom call to the hands-free telephone 12 and the telephone slave unit 13 via the voice line. The main device 1l is equipped with an amplifier circuit 30 and a speaker power 3l, and sends an extension ring tone, a ping-pong tone for intercom calls, and a BGM monitor sound from the speaker 3l. The main device 11 includes an LED control circuit 32, which will be described in detail later.
It has an amplifier control circuit 33 and a button press reading circuit 34. Further, the main device 11 has a power supply circuit 35. The hands-free telephone 12 is constructed as shown in FIG. That is, the hands-free telephone 12 has a ringer circuit 36 branch-connected to a communication line connected to the two-wire telephone handset 13 or the intercom 14 via the main device 11, and a hands-free communication circuit to this communication line. 37 is connected. Ringer circuit 36, current flow device 38, and ringer IC
It consists of 39 parts. The hands-free communication circuit 37 is a μ current loop type in the answering samurai, so the photocoupler 40
It is additionally equipped with a photodetector. Further, the hands-free telephone 12 is equipped with a response switch circuit 4l. The response switch circuit 4l includes a response switch 42 and a control iIc 43.
, a light emitting element of a photocoupler 40, and a response display 44. As a result, the hands-free phone l2
After turning on the response switch 42 and turning on the photocoupler 40 to form a DC loop in the hands-free call circuit 37, it is possible to make a hands-free call using the microphone 45 and speaker 46. Note that the speaker 46 is connected to the hands-free calling circuit 37 via an electronic volume circuit 47 and an amplifier circuit 48. The hands-free telephone 12 is also equipped with an audio output circuit 50t capable of transmitting BGM from an audio device 15 via the main device 1l. This audio output circuit 50
is comprised of the above-mentioned electronic volume circuit 47, amplifier circuit 48, and speaker 46, which are connected to the audio device input circuit 26 of the main device 11 via an audio line. At this time, the hands-free telephone 12 is equipped with a BGM switch 5l, and button press information of the BGM switch 51 can be transferred from the button press reading circuit 34 of the main unit 2111 to the CPU 23 via an information line. As a result, C.P.
U23 drives the amplifier dedicated circuit 33, turns on the power switching transistor of the amplifier circuit 48 via the amplifier control line, and enables the BGM to be transmitted from the speaker 46 of the audio output circuit 50. In addition, the hands-free phone Jal2 has extension call switch 5.
2. It is equipped with a hold switch 53, and the button press information of these switches 52 and 53 is transferred from the button press reading circuit 34 of the main device 11 to the CPU 23 via the information line, and the hands-free telephone l2 is put into extension call mode and put on hold. mode can be set. Also, main equipment i7t l 1 Kabi 6 L E D iT
jl '8 circuit 3 2 drives, under the control of the CPU 23, the BGM transmission indicator 54 and the extension call indicator 55 built into the hands-free telephone 12 via the LED control line. This makes it possible to display that the eight-free telephone 12 is in BGM transmission mode or extension call mode. Below, we will explain the operations of the telephone function, intercom call function, and audio function of the ``Call Talk System 1O''. (A) Telephone function We will explain the process from receiving a call to making a hands-free call. ■When the incoming signal (1B}+2, 75V) from the telephone office arrives at the main unit 2211, the ringer circuit 16 of the main unit 2211
Ringer I C 1 9. and hands-free telephone-1
The ringer IC 39 of the second ringer circuit 36 is driven and a ringer sound is sent out. ■In response to the ringing sound in Chapter 12■, use a hands-free phone. 1
2, the response switch 42 of the response switch circuit 4l
When is pressed, the light emitting element of the photocoupler 4o turns on. ``■'' The light receiving element of the photocoupler 40 is turned on by item ``■''.
The DC loop of the hands-free calling circuit 37 is closed, and hands-free calling is started. (4) At the end of a call, when the response switch 42 of the response switch group 4l is pressed, the light emitting element of the photocoupler 40 is turned off. (5) The light receiving element of the photocoupler 40 is turned off by the above (2), the DC loop of the hands-free passage circuit 37 is opened, and the system enters a standby state. Note that the telephone handset 13 can also respond to the ringer sweat in -L. Further, if the hands-free telephone 12 or the telephone handset 13 has a dialing function, it is also possible to make an outside call via the main device 11. (B) Theory 1 representing the intercom function from receiving a call (bing-bong sound is sent) to making a call.
Moon. (2) When button press information of the intercom 14 is detected by the button press detection circuit 25 of the intercom connection circuit 24, this button press information is transferred to the CPU 23. The CPU 23 of (91) switches the relay sentence l.text 2 to a b contact, switches the relay sentence 3 to a b contact, and drives the melody IC 29 of the melody sending circuit 28.As a result,
Bing-bong sound is sent to the intercom 14 and also from the sound power 3l of the main unit 11. This ping-pong sound is also transmitted from the speaker 46 of the hands-free telephone 12 via the BY voice line. ■When the telephone handset l3 goes off-hook and responds to the ping-pong sound in record 7■, the photocoupler 2l of the control switching circuit l7
turns on. Based on this photocoupler 2l being turned on, the CPU 23 switches the relay switch 3 to the a contact, and an intercom call is started. (3) End of call When the telephone handset 13 goes on-hook, the photocoupler 2l of the control switching circuit 17 turns off. When the photocoupler 21 is turned off, the CPU 23 switches the relay.
Switch sentence 2 to a reception, and the state becomes standby 1j8. In addition, the hands-free/telephone device l2 can also respond to the ping-pong sound mentioned above. (C') The audio device l5 with the audio function is connected to the input terminal 27 of the audio device input circuit 26. (2) The BGM switch 51 of the main unit: a12 is pressed. When this button press information is detected by the button press reading circuit 34 of the main unit fill, this button press information is transferred to the CPU 23. ■The CPU 23 drives the amplifier control circuit 33, turns on the power switching transistor of the amplifier circuit 48, and turns on the speaker 46 of the audio output circuit 50.
Sends BGM from. ■When the BGM switch 51 of the hands-free telephone l2 is pressed again, the CPU 23 detects this information in the same manner as in the above ■, and controls the amplifier control circuit 33 to control the amplifier circuit 4.
8 is turned off, and the BGM transmission from the speaker 46 is stopped. still. -1-. After writing ■, main outfit 2l1! The BGM of the audio device 15 is continuously transmitted from the speaker 31 of the . That is, according to the above telephone system 10, the following (1) to (5)
). (1) The three functions of telephone function, intercom function, and audio function can be realized in a small and simple system without a tuner circuit. (2) Since the control switching circuit 17 for the telephone handset 13 is provided in the -F device 11, commercially available telephone handsets can be connected and used according to the typing of the user name. (3) For example, you can use the hands-free telephone l2 installed in the bathroom to talk to the intercom 14 installed at the entrance. (4) By connecting the audio device 15 to the main device 11, the radio broadcast from a handheld radio cassette player or the like or the playback sound from a tape recorder can be transmitted from a hands-free telephone 12 installed in the bathroom, for example. (5) J: By installing the aforementioned hands-free telephone l2 in a kitchen, toilet, etc., a comfortable kitchen and comfortable toilet can be realized. ``Effects of the Invention'' As described above, according to the present invention, three functions, a telephone function, an intercom function, and an audio function, can be realized in a small and simple system.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing an example of the telephone system of the present invention, Fig. 2 is a block diagram showing an example of the device constituting the telephone system of the present invention, and Fig. 3 is a schematic diagram showing an example of the telephone system of the present invention. 1 is a block diagram showing an example of a hands-free telephone. lO...Telephone system, 11...Main device, 12...Hands-free telephone, 13...2-wire telephone handset, l4...Intercom, l5...Audio equipment, l7... Control switching circuit, 24... Intercom connection circuit, 2 6... Audio equipment input circuit, 37... Hands-free call circuit, 50... Audio output circuit.

Claims (1)

[Claims] (1) In a telephone system configured with a main device connected to a telephone office line and a hands-free telephone connected to the main device, the main device has a telephone handset connection circuit and an intercom connection circuit. and an audio device input circuit, and the hands-free telephone handset includes a hands-free call circuit that is connected to the telephone handset or intercom via the main device, and an audio device input circuit that receives the output of the audio device through the main device. A telephone system characterized by comprising: an audio output circuit capable of transmitting audio.