JPH0697875A - Cordless telephone system - Google Patents

Abstract

PURPOSE:To provide the cordless telephone system which not only is normally used indoors but also gives a service between cordless telephone sets and gives a service as a land mobile radiotelephone outdoors and enables a user to hear recorded contents of an automatic answering function part outdoors around an automobile. CONSTITUTION:A telephone function part 1, an automatic answering function part 2 which has the automatic answering telephone function and transfers contents to a land mobile radiotelephone equipment by setting, radio transmission/reception function parts 20 and 21 which connect cordless telephone sets 10 and 11 and relay the speech between cordless telephone sets 10 and 11, and cordless telephone sets 10 and 11 are provided. This system consists of a telephone set part 30 provided with the telephone function part 1 and the automatic answering function part 2, a radio machine part 60 which has an external power connection terminal 40 and connects radio transmission/ reception function parts 20 and 21 to the telephone set part 30 or the land mobile radiotelephone equipment 50 by switching and performs switching to relay the speech between cordless telephone sets 10 and 11, and cordless telephone sets 10 and 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone master unit having a telephone function section, an answering machine function section, and first and second wireless transmission / reception function sections respectively having different operating frequencies, and first and second cordless telephones. To a cordless telephone system having

[0002]

2. Description of the Related Art FIG. 3 is a block diagram of a conventional cordless telephone system. Cordless telephone base unit 70 of FIG.
Has a line / telephone interface section 1-1, an answering machine function section 2, an external power supply 3, a switch section 5, a control section 1-2, a keyboard 1-3, and wireless transmission / reception function sections 20 and 21.

The wireless transmission / reception function unit 20 uses the control signal frequencies f _c1 and f _c2 between the cordless telephones 10 and 11 to make a call, send and receive a dial signal, allocate a frequency, etc. The frequencies for communication are f ₁ and f ₂ . However, only when two cordless telephones are used at the same time, the two wireless transmission / reception function units are used, and communication is performed between the cordless telephone that is used later and the wireless transmission / reception function unit 21. The frequencies used at this time are f _c3 and f _c4 for control, and f ₃ and f ₄ for communication.

The wireless transmission / reception function units 20 and 21 and the cordless telephones 10 and 11 use weak radio waves and can talk over a distance of several tens of meters. The cordless telephone base unit 70 is installed indoors and the cordless telephones are installed. 10 and 11 are also installed and used indoors.

The switch section 5 operates under the control of the control section 1-2, and if the keyboard 1-3 is in a call, the incoming line / telephone interface section 1-1 and the wireless transmission / reception function sections 20 and 21 are connected in parallel. Connect to cordless telephone 10,1
From 1 you can talk to the other party via the central line.

If the keyboards 1-3 are relayed,
The modulation unit and the demodulation unit of the wireless transmission / reception function unit 20 and the demodulation unit and the modulation unit of the wireless transmission / reception function unit 21 are connected to each other so that the relay can be performed, and the cordless telephones 10 and 11 can talk.

The answering machine function unit 2 is supplied with electric power from the external power supply 3 and if there is no response for a predetermined time when an incoming call is received, the control unit 1-2 detects this and operates the answering machine function unit 2 to record the message of the other party. In addition, the recorded contents can be heard by accessing from the local line side, and the recorded contents can be transferred to the car telephone wireless device by setting. The keyboards 1-3 have various setting buttons such as a dial signal button, an off-hook button, a call designation button, and a relay designation button. The line / telephone interface unit 1-1, the control unit 1-2 and the keyboard 1-3 are components of the telephone function unit.

Next, the basic operation of the cordless telephone system will be described. An incoming call from the office line is input to the line / telephone interface section 1-1, and the line / telephone interface section 1-1 is set to the control section 1-2. The control unit 1-2 controls the switch unit 5 so that the incoming call signal is transmitted to the cordless telephones 10 and 11 via the wireless transmission / reception function units 20 and 21, and the cordless telephones 10 and 11 respond. Then, it becomes possible to talk with the other party through the line / telephone interface section 1-1, the switch section 5, and the wireless transmission / reception function sections 20 and 21 with the cordless telephones 10 and 11.

[0009]

However, when the cordless telephones 10 and 11 are taken out of the outdoors, the distance from the cordless telephone master set 70 increases, so that the cordless telephone master set 70 and the cordless telephones 10 and 11 are connected to each other. Since the communication becomes impossible, the wireless transmission / reception function units 20 and 21 of the cordless telephone base unit 70 are used for relay, the call between the cordless telephones 10 and 11 cannot be performed outdoors, and the cordless telephones 10 and 11 are indoors. Also, since it cannot be connected to the car telephone radio device, the cordless telephones 10 and 11 cannot communicate as a car telephone outdoors through the car telephone radio device, and the recorded contents of the answering machine function unit 2 can be recorded outdoors. There is a problem that I cannot hear.

According to the present invention, it is possible to make a call between cordless telephones outdoors, and to make a call as a car telephone outdoors.
It is also intended to provide a cordless telephone system that allows the user to hear the recorded contents of the answering machine function outside the vehicle.

[0011]

FIG. 1 is a block diagram showing the principle of the present invention. As shown in FIG. 1, a telephone function unit 1 that can be connected to a line as a telephone, an answering machine unit 2 that has an answering machine function and can also be transferred to an automobile telephone wireless device by setting, and a first using different frequencies. , The first and second wireless transmission / reception function units 20 having different operating frequencies for connecting to the second cordless telephones 10 and 11 and relaying a call between the first and second cordless telephones 10 and 11.
21 and a cordless telephone system including the first and second cordless telephones 10 and 11, a telephone portion 30 including the telephone function unit 1 and the answering machine function unit 2, and the first and second wireless transmission / reception functions. Parts 20, 21 and an external power supply connection terminal 40 for supplying electric power from an external power supply,
Further, the first and second wireless transmission / reception function units 20 and 21 can be switched and connected to the telephone unit 30 or the car telephone wireless device 50, and the first wireless transmission / reception function unit 20 and the second wireless transmission / reception function unit 21 can be connected. The first and second cordless telephones 1
A radio unit 60 having a switching control unit 20 that can be switched and connected so as to relay a call between 0 and 11;
The second cordless telephones 10 and 11 are used.

[0012]

According to the present invention, the radio unit 60 and the cordless telephones 10 and 11 are carried out to the outside, and the external power source is connected to the external power source connection terminal 40 of the radio unit 60 to supply power to the radio unit 60. If the switching control unit 22 is connected so that the wireless transmission / reception function units 20 and 21 are used as relays, it becomes possible to talk outdoors between the cordless telephones 10 and 11.

If the car telephone radio unit 50 is connected to the radio unit 60 by a cord and the switch control unit 22 is connected so that the radio transmission / reception function units 20 and 21 are used as relays, it can be outdoors. Calls can be made between the cordless telephones 10 and 11.

If the switching control unit 22 connects the radio transmission / reception function units 20 and 21 to the car telephone radio unit 50, the cordless telephones 10 and 11 can be used outdoors to communicate as car radio. Become.

If the wireless transmission / reception function units 20 and 21 are connected to the car telephone radio unit 50 and the transfer destination in the answering machine function unit 2 is set to transfer to the car telephone radio unit 50 and set, You can listen to the recorded contents on the cordless telephones 10 and 11 located outdoors around the.

[0016]

2 is a block diagram of a cordless telephone system according to an embodiment of the present invention. In FIG. 2, the line / telephone interface unit 1-1, the control unit 1-2, the keyboard 1-3, the answering machine function unit 2, and the external power source 3 in the cordless telephone master unit 70 of FIG. 30 and the wireless transmission / reception function units 20 and 21 are housed in a wireless device unit 60 in a separate housing. The telephone unit 30 is provided with a wireless device unit interface unit 4 to enable connection with the wireless device unit 60. The section 60 includes a switch section 22-1, a switching control section 22-2, and a keyboard 2.
2-3 is provided, and it can be connected to the car telephone radio device 50 by a cord, and the external power supply terminal 40 has an external power supply 61.
Is connected to supply power, and the wireless device section 60 can be taken out and used outdoors.

The wireless transmission / reception function unit 20 corresponds to the cordless telephone 10, and includes a modulation unit 23 for making a voice signal a radio frequency f ₁ , a demodulation unit 24 for making a radio frequency f ₂ a voice signal, and a demultiplexing unit 25. The transmission / reception function unit 21 corresponds to the cordless telephone 11, and is a modulation unit 26 for making a voice signal a radio frequency f ₃ and a demodulation unit 2 for making a radio frequency f ₄ a voice signal.
7, the branching unit 28.

The cordless telephones 10 and 11 and the radio unit 60 are taken out to the outside, the external power source 61 is connected to the external power source connection terminal 40 of the radio unit 60 to supply electric power, and the telephone unit 30 and the handset 51 are connected. The keyboard 2 when the removed car telephone wireless devices 50 are connected respectively
2-3, the operation of the control unit 22-2 and the switch unit 22-1 will be described. If the keyboard 22-3 is a telephone unit,
The switching control unit 22-2 is the switch S of the switch unit 22-1.
W1, SW2, SW3, and SW4 are on the solid line side, and the line / telephone interface unit 1-1, the radio unit interface unit 4, the switch unit 22-1, and the wireless transmission / reception function units 20 and 21.
It becomes possible to communicate between the station line side and the cordless telephones 10 and 11 via the.

When the keyboard 22-3 is used as a relay, the switching control unit 22-2 is a switch SW of the switch unit 22-1.
3 and SW4 are on the dotted line side, and SW1 and SW2 are on the alternate long and short dash line side, it becomes possible to talk between the cordless telephones 10 and 11 outdoors.

When the keyboard 22-3 is a car telephone, the switching control unit 22-2 sets the switches SW1 and SW2 of the switch unit 22-1 to the dotted line side, and the cordless telephone 10 outside the car is a radio transmission / reception function. Part 20,
It becomes possible to make a call as a car phone through the car phone wireless device 50.

If the keyboard 22-3 is a car telephone and the telephone to which the answering machine function unit 2 of the telephone set 30 is transferred is set to the car telephone radio device 50, the cordless telephone 10 located outside the car will be used. You can listen to the recorded content.

[0022]

As described in detail above, according to the present invention, a call between cordless telephones can be made outdoors, a call can be made as a car radio outdoors, and the recorded contents of the answering machine can be recorded around the car. There is an effect that a cordless telephone system that can be heard outdoors is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram of the principle of the present invention,

FIG. 2 is a block diagram of a cordless telephone system according to an embodiment of the present invention,

FIG. 3 is a block diagram of a conventional cordless telephone system.

[Explanation of symbols]

1 is a telephone function unit, 1-1 is a line / telephone interface unit, 1-2 is a control unit, 1-3 and 22-3 are keyboards,
2 is an answering machine function unit, 3, 61 is an external power supply, 4 is a radio unit interface unit, 5, 22-1 is a switch unit, 10,
11 is a cordless telephone, 20 and 21 are wireless transmission / reception function sections, 22 and 22-2 are switching control sections, 23 and 26 are modulation sections, 24 and 27 are demodulation sections, 25 and 28 are demultiplexing sections, and 30 is a telephone section. , 40 is an external power supply connection terminal, 50 is a mobile telephone radio device, 51 is a handset, 60 is a radio unit, 70
Indicates a cordless telephone base unit.

Claims (1)

[Claims] 1. A telephone function unit (1) that can be connected to a line as a telephone, and an answering machine function unit (2) that has an answering machine function and can also be transferred to an automobile telephone wireless device by setting, respectively, of a frequency used. Connections with different first and second cordless telephones (10, 11) and relaying of a call between the first and second cordless telephones (10, 11) are performed. Wireless transmission / reception function unit (20, 2
1) and a cordless telephone system having the first and second cordless telephones (10, 11), a telephone section (30) having the telephone function section (1) and the answering machine function section (2), External power supply connection terminals (4) for supplying power from the first and second wireless transmission / reception function units (20, 21) and an external power supply.
0), and further, the first and second wireless transmission / reception function units (20, 21) can be switched and connected to the telephone unit (30) or the car telephone wireless device (50), or the first wireless transmission / reception. The function unit (20) and the second wireless transmission / reception function unit (2
1) to the first and second cordless telephones (10, 11)
A wireless device section (60) having a switching control section (20) capable of switching connection so as to relay a call between them, and the first and second cordless telephones (10, 11). A cordless telephone system characterized in that