JPH1084580A - Mobile terminal equipment for radio telephone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a radio channel changeover device 15 to select automatically the standby mode to a home use master set (master set main body). SOLUTION: A master set control signal detector 13 that detects a master set control signal of a home use master set based on a reception signal of a home frequency radio equipment 12 is provided and when the master set control signal detected by the master set control signal detector 13 reaches a prescribed level or over, the detector 13 allows a radio channel changeover device 15 to select standby in a home mode frequency from a standby in a public mode frequency.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile telephone terminal such as a PHS mobile terminal that can be connected to a public wireless telephone base station and a home wireless telephone base station by wireless communication.

[0002]

2. Description of the Related Art As a conventional mobile terminal of a radio telephone,
A public subscriber identification number and a home subscriber identification number are registered and can be automatically switched to a standby mode of a public mode frequency or a home mode frequency for transmission / reception. Have been. This mobile terminal device for a wireless telephone has a portable unit placed on a charging stand (external power supply) which is placed on a main unit of a home wireless telephone base unit (hereinafter referred to as a home base unit) in a home. By starting the charging, the mode can be automatically switched to the standby mode for the home parent machine.

In addition, a slave unit is provided with a charge detection circuit and a control circuit for controlling the master unit selection circuit unit.
Japanese Patent Laid-Open No. 6-252838 discloses, for example, a technology for switching a standby mode in which a home parent device is preferentially selected by charging.

[0004]

However, in any of the conventional mobile terminal devices of wireless telephones,
When the user with the handset enters the home mode frequency range, which is within the range of the home base unit, switching to the home mode frequency standby, assuming that the handset is placed on the charging stand. Therefore, if the charging stand is not present or if the user forgets to place the handset on the charging stand, the handset remains connected to the public wireless telephone base station (hereinafter referred to as the public station). Therefore, there was a problem that the call charge could not be reduced.

[0005] The present invention solves the above-mentioned problem, and when the slave unit is in the range of the home mode frequency of the home base unit, the wireless mode can automatically switch from the public mode to the home mode standby. It is intended to obtain a mobile terminal for a telephone.

[0006]

To achieve the above object,
A mobile terminal device for a wireless telephone according to the invention of claim 1, comprising: a public frequency wireless device that performs standby on a public mode frequency;
A home frequency radio device that performs standby at a home mode frequency; and a base unit control signal detection device that detects a base unit control signal of a home base unit based on a reception signal of the home frequency radio unit. When the master device control signal detected by the signal detection device is equal to or higher than a certain level, the wireless switching device switches the standby at the public mode frequency to the standby at the home mode frequency. .

According to a second aspect of the present invention, there is provided a mobile terminal device for a wireless telephone, comprising a public control signal detecting device for detecting a public control signal based on a received signal of the public wireless device. And causes the wireless switching device to switch from standby at the public mode frequency to standby at the home mode frequency based on the public control signal detected by the wireless communication device.

According to a third aspect of the present invention, there is provided a mobile terminal for a wireless telephone, comprising a dial information analyzer for analyzing dial information input by a dial input device, and a dial information analysis result by the dial information analyzer. The wireless switching device is configured to switch the standby at the public mode frequency to the standby at the home mode frequency.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a mobile terminal device of a radio telephone according to the present invention.
1 is a public frequency radio apparatus that performs standby at a public mode frequency, 12 is a home frequency radio apparatus that performs standby at a home mode frequency, and 13 is a home parent constituting a mobile terminal apparatus based on a reception signal of the home frequency radio apparatus 12. A base station control signal detection device 14 for detecting a base station control signal of the device, and a public control signal detection device 14 for detecting a public control signal based on a reception signal of the public frequency radio device 11.

The master control signal and the public control signal detected by the master control signal detection device 13 and the public control signal detection device 14 include, for example, the information indicating that a slave unit constituting a mobile terminal device approaches or separates. And a reception state signal such as a special control signal generated by the slave unit. When each of these control signals is detected, master device control signal detection device 13 and public control signal detection device 14 output wireless switching control signals 21a and 21d, respectively.

On the other hand, 16 is a charge detecting device for detecting that the slave unit is placed on the charging stand and outputting a wireless switching control signal 21b, 17 is a dial input device for the user to make a dial input, and 18 is a dial input device. This is a dial analysis device that analyzes a dial number dialed by the input device 17 and outputs a wireless switching control signal 21c according to the analysis result. When receiving one of the wireless switching control signals 21a to 21d output from the master device control signal detecting device 13, the public control signal detecting device 14, the charging detecting device 16 and the dial input device 17, the public device 15 receives the signal. The wireless switching device outputs the wireless control signals 22a and 22b to the home frequency wireless device 12 or the public frequency wireless device 11 so as to perform standby at the mode frequency or standby at the home mode frequency. Note that reference numeral 19 denotes a public antenna provided in the public frequency radio device 11, and reference numeral 20 denotes a home antenna provided in the home frequency radio device 12.

In the mobile terminal device for a radio telephone having such a configuration, the base unit control signal detecting device 13 detects a control signal of the base unit at a certain level or more based on the received signal of the home frequency radio device 12, whereby: The master unit control signal detecting device 13 sends a wireless switching control signal 21 to the wireless switching device 15.
Send a. Therefore, the wireless switching device 15 switches the wireless device to a standby mode at the home mode frequency in accordance with the wireless switching control signal 21a.

When a portable unit, which is a mobile unit, is placed on a charging stand for charging at the home base unit side, the charging detection unit 16 detects this and sends a wireless switching control signal 21b wirelessly. It transmits to the switching device 15. Therefore, the wireless switching device 1
5 receives the wireless switching control signal 21b and switches the wireless device to the standby mode at the home mode frequency.

Further, the dial analyzer 18 constantly monitors and analyzes dial numbers input from the dial input device 17. Therefore, for example, when the home base unit is located in a region away from the public station, when the slave unit communicates from the range of the home mode frequency of the home base unit to a public station outside the range, the area code or “0” is used. The dial analyzer 18 monitors and analyzes the dialing of a number starting with "", and the wireless switching device 15 waits at the home mode frequency based on the wireless switching control signal 21c as a result of the analysis. Then, the wireless device is switched to the home parent device side. On the other hand, if it is out of the range of the home mode frequency of the home base unit, a wireless switching control signal 20c for dialing in the public mode can be transmitted to the wireless switching device 15 to switch to the public station side.

In the case where there is no area code, a timetable is transmitted to the wireless switching device 15 at the home mode frequency.
A wireless switching control signal 21c is transmitted, whereby the wireless switching device 15 switches the wireless device to a standby at the home mode frequency.

The public control signal detecting device detects a control signal of a public station having a certain level or higher, for example, based on a received signal of the public frequency radio device 11, and sends a radio switching control signal 12d to the radio switching device 15. Send.
Therefore, the wireless switching device 15 connects the slave unit to the public station. Therefore, when the control signal of the public station is lower than a certain level, it is possible to switch to the standby of the home mode frequency and to preferentially connect the slave unit to the home master unit with a low call charge.

[0017]

As described above, according to the first aspect of the present invention, a public frequency radio apparatus that performs standby at a public mode frequency, a home frequency radio apparatus that performs standby at a home mode frequency, and A base unit control signal detection device for detecting a base unit control signal of the home base unit based on the received signal, wherein the base unit control signal detected by the base unit control signal detection device has reached a certain level or higher. At this time, the wireless switching device is configured to switch the standby mode at the public mode frequency to the standby mode at the home mode frequency. Using special control signals
It is possible to supplement the home base unit, whereby it is possible to automatically and quickly switch to the standby mode for the home base unit (main unit main body), and it is possible to obtain the effect of reducing the call cost.

According to a second aspect of the present invention, there is provided a public control signal detecting device for detecting a public control signal based on a received signal of the public wireless device, and a public control signal detected by the public control signal detecting device. Based on this, the wireless switching device is configured to switch from standby at the public mode frequency to standby at the home mode frequency, so that the control signal of the public station is kept at a certain level, for example, when the slave unit leaves the public station. In the following cases, it is possible to obtain an effect that the slave unit can be preferentially switched and connected to the home master unit with a low call charge.

According to a third aspect of the present invention, there is provided a dial information analyzing device for analyzing dial information inputted by a dial input device, and based on a result of dial information analysis by the dial information analyzing device, a wireless switching device is provided. ,
Since the standby mode at the public mode frequency is switched to the standby mode at the home mode frequency, a dial operation to an area code or a dial number starting with "0" is automatically performed, thereby automatically setting the home mode frequency. Therefore, it is possible to obtain the effect that the selection of the home base unit can be switched unconsciously and the line connection with a low call charge can be easily performed.

[Brief description of the drawings]

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Public frequency radio apparatus 12 Home frequency radio apparatus 13 Master device control signal detection device 14 Public control signal detection device 15 Wireless switching device 16 Charge detection device 17 Dial input device 18 Dial analysis device

Claims (3)

[Claims] 1. A public frequency radio apparatus that performs standby at a public mode frequency, a home frequency radio apparatus that performs standby at a home mode frequency, and a base unit control signal of a home base unit based on a reception signal of the home frequency radio apparatus A master device control signal detection device for detecting the master device control signal, the master device control signal detected by the master device control signal detection device becomes a certain level or more, the standby in the public mode frequency at the home mode frequency And a wireless switching device for switching to a standby mode. 2. A public frequency radio apparatus that performs standby at a public mode frequency, a home frequency radio apparatus that performs standby at a home mode frequency, and a public control that detects a public control signal based on a reception signal of the public frequency radio apparatus A signal detection device; and a wireless switching device that switches standby at the public mode frequency to standby at the home mode frequency based on the public control signal detected by the public control signal detection device. Mobile terminal device of a wireless telephone. 3. A public frequency wireless device that performs standby at a public mode frequency, a home frequency wireless device that performs standby at a home mode frequency, a dial information analysis device that analyzes dial information input by a dial input device, A mobile terminal device for a wireless telephone, comprising: a wireless switching device that switches standby at the public mode frequency to standby at the home mode frequency based on a result of analysis of dial information by the dial information analysis device.