JPH05304495A - Radio telephony set - Google Patents

Abstract

PURPOSE:To effectively utilize one radio telephony set by providing first and second voice signal processing parts for inputting first and second low frequency signals and processing the voice signals, a switching circuit for switching high frequency signals from an antenna and a control part. CONSTITUTION:When the switching destination of a high frequency signal 2 from the antenna 1 is a radio part 5 corresponding to a first radio communication system at a switching circuit 3, a high frequency signal 4 is inputted to the radio part 5 and outputted as the first low frequency signal 6. Then the signal 6 is processed in voice at a voice signal processing part 7. Also, when the switching destination of the signal 2 at the switching circuit 3 is a radio part 9 corresponding to a second communication system, a high frequency signal 8 is inputted to the radio part 9 and outputted as the second low frequency signal 10. Then the signal 10 is processed in voice at a voice signal processing part 11. Thus, whether the signal 2 is to be connected to the radio part 5 corresponding to the first radio communication system or the radio part 9 corresponding to the second communication system is decided with the switching circuit 3 by a control signal 12 from a control part 13. Consequently, one radio telephone set is effectively utilized for the two radio communication systems.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to wireless telephones.

[0002]

2. Description of the Related Art A conventional radio telephone will be described with reference to the drawings.

FIG. 2 is a block diagram showing an example of a conventional wireless telephone.

In FIG. 2, the wireless telephone of this conventional example is configured to have an antenna 21, a wireless unit 23, and a voice signal processing unit 25, and one predetermined wireless communication system input from the antenna 21. The high frequency signal 2 is converted into the low frequency signal 24 by the wireless unit 23 and is output.
Is input to the audio signal processing unit 25 and subjected to audio processing. or,
The low frequency signal 24 output from the audio signal processing unit 25 is input to the wireless unit 23 and is input to the wireless communication system high frequency signal 22.
And the high frequency signal 22 is input to the antenna 21 and output as a radio wave.

[0005]

Since this conventional radio telephone is configured to be applied to one radio communication system, when radio communication in which the two radio communication systems have different uses is required. There is a problem that it is necessary to have two wireless phones.

[0006]

The wireless telephone of the present invention comprises:
A first audio signal processing unit for processing an audio signal by inputting a first low-frequency signal from an antenna, a wireless unit for the first wireless communication system, and a wireless unit corresponding to the first wireless communication system. A second voice signal processing for processing a voice signal by inputting a second low frequency signal from the radio unit corresponding to the second radio communication system and the radio unit corresponding to the second radio communication system. Unit and a switching circuit for selecting whether to connect a high-frequency signal from the antenna to a wireless unit compatible with the first wireless communication system or a wireless unit compatible with the second wireless communication system by a control signal. And a control for sending a control signal for controlling whether the high-frequency signal from the antenna is connected to a wireless unit compatible with the first wireless communication system or a wireless unit compatible with the second wireless communication system. And a section.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.

In FIG. 1, the wireless telephone of this embodiment includes an antenna 1 and a wireless unit 5 compatible with the first wireless communication system.
An audio signal processing unit 7 for processing the audio signal by inputting the first low-frequency signal from the wireless unit 5 compatible with the first wireless communication system; a wireless unit 9 compatible with the second wireless communication system; Second
Audio signal processing unit 11 for processing the audio signal by inputting the second low frequency signal from the wireless unit 9 corresponding to the wireless communication system of
And a switching circuit 3 for selecting whether to connect the high-frequency signal from the antenna 1 to the wireless unit 5 corresponding to the first wireless communication system or the wireless unit 9 corresponding to the second wireless communication system by the control signal. And a switching circuit 3 for selecting whether to connect the high-frequency signal from the antenna 1 to the wireless unit 5 corresponding to the first wireless communication system or the wireless unit 9 corresponding to the second wireless communication system by the control signal. And a control for sending a control signal for controlling whether the high-frequency signal from the antenna 1 is connected to the wireless unit 5 corresponding to the first wireless communication system or the wireless unit 9 corresponding to the second wireless communication system. And a part 13.

Next, the operation of this embodiment will be described.

The high frequency signal 2 input from the antenna 1 is a switching circuit 3, and when the switching destination is the wireless unit 5 corresponding to the first wireless communication system, the high frequency signal 4 is wireless corresponding to the first wireless communication system. It is input to the unit 5 and output as the second low frequency signal 6. The first low frequency signal 6 is input to the audio signal processing unit 7 and subjected to audio processing.

The high frequency signal 2 input from the antenna 1 is
When the switching destination of the switching circuit 3 is the wireless unit 9 corresponding to the second wireless communication system, the high frequency signal 8 is input to the wireless unit 9 corresponding to the second wireless communication system and the second low frequency signal 10 is input.
Is output as. The second low-frequency signal signal 10 is input to the audio signal processing unit 11 and subjected to audio processing. Switching circuit 3
Determines whether to connect the high-frequency signal 2 to the wireless unit 5 corresponding to the first wireless communication system or the wireless unit 9 corresponding to the second wireless communication system by the control signal 12 from the control unit 13. To do.

In this embodiment, a cordless telephone is used as the first wireless communication system, and a mobile telephone is used as the second wireless communication system. For example, a cordless telephone is used when making a call from home. When calling from the beginning, it can be used as a mobile phone, and one unit can effectively use two roles. Furthermore, compared to using it as a mobile phone at all times, it also has the merit of reducing the burden of telephone usage charges when used as a cordless phone.

[0014]

As described above, according to the present invention, the antenna, the radio unit corresponding to the first radio communication system, and the first low-frequency signal from the radio unit corresponding to the first radio communication system are provided. A first audio signal processing unit for inputting and processing an audio signal;
A wireless unit compatible with the second wireless communication system, and a second audio signal processing unit configured to input a second low-frequency signal from the wireless unit compatible with the second wireless communication system to process an audio signal; A switching circuit for selecting whether to connect a high-frequency signal from the antenna to a wireless unit corresponding to the first wireless communication system or to a wireless unit corresponding to the second wireless communication system by a control signal, and a high-frequency signal from the antenna By providing a control unit that sends a control signal for controlling whether the signal is connected to the wireless unit corresponding to the first wireless communication system or the wireless unit corresponding to the second wireless communication system, Send and receive wireless communication method 1
Since it is performed by one wireless telephone, there is an effect that one device can effectively use two roles.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a block diagram showing an example of a conventional wireless telephone.

[Explanation of symbols]

 1, 21 Antenna 2, 22 High frequency signal 3 Switching circuit 4 High frequency signal 5 Radio part 6 Low frequency signal 7 Voice signal processing part 8 High frequency signal 9 Radio part 10 Low frequency signal 11 Voice signal processing part 12 Control signal 13 Control part 23 Radio Section 24 low frequency signal 25 audio signal processing section

Claims (1)

[Claims] 1. A first processing unit for processing a voice signal by inputting a first low-frequency signal from an antenna, a wireless unit for the first wireless communication system, and a wireless unit corresponding to the first wireless communication system. An audio signal processing unit, a wireless unit compatible with the second wireless communication system, and a second low-frequency signal from the wireless unit compatible with the second wireless communication system, and processing the audio signal. And a control signal indicating whether to connect the high-frequency signal from the antenna to the wireless unit corresponding to the first wireless communication system or the wireless unit corresponding to the second wireless communication system. And a control circuit for controlling whether to connect a high-frequency signal from the antenna to a wireless unit compatible with the first wireless communication system or a wireless unit compatible with the second wireless communication system. And a control unit for transmitting a signal. Wireless phone.