JP2000106540A - Dual mode type mobile radio terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily prolong the duration of call of a ground wave mobile terminal by fitting this terminal to an iridium main body terminal when the drop of power voltage of a battery contained in the ground wave mobile terminal is detected. SOLUTION: Then a ground wave mobile terminal 20 is separated from an iridium main body terminal 30 and used continuously, the voltage level of a battery 24 is gradually lowered. Thereby the terminal 20 requests a power supply command to the terminal 30. Receiving the power supply command, the terminal 30 switches the power changeover switches 32 and 23 to supply the power to the battery 24 from a battery 33 contained in the terminal 30. Thus, the battery 24 of the terminal 20 receives the supply of power from the battery 33 of the terminal 30 and can operate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal communication terminal function and a terrestrial mobile terminal function which can be performed by one terminal.
It has a function of each type, and each communication terminal can be driven by a battery, and when it is detected that the battery of one communication terminal is almost exhausted, it is driven by the battery of the other communication terminal. The present invention relates to a dual mode mobile wireless terminal.

[0002]

2. Description of the Related Art A battery control in a conventional dual mode mobile radio terminal is disclosed in Japanese Patent Laid-Open No. 7-2122.
No. 95. In this publication, a single cellular phone has a cellular battery and a cordless battery. If the cellular battery runs out during use in the cellular mode, the cordless battery is used, and the cordless battery is used during the cordless mode. It is disclosed that when the battery runs out, a cellular battery is used.

[0003]

As described above, in the conventional dual mode mobile radio terminal, a single portable telephone has a cellular battery and a cordless battery. When the battery runs out, the cordless battery is used, and when the cordless battery runs out during use in the cordless mode, the respective switches are switched to use the cellular battery. However, a dual mode which can be applied as a so-called mobile satellite communication terminal using a satellite in orbit as a network switching node, or as a terrestrial mobile terminal such as a cellular type or a PHS type using a terrestrial radio base station. The configuration of the mobile wireless terminal is such that it can be divided into a main body terminal for driving the mobile satellite communication terminal function and a terrestrial portable terminal for driving the terrestrial mobile terminal function. Therefore, in such a configuration in which the main body terminal and the terrestrial portable terminal are separated from each other, the respective batteries cannot be controlled only by switching the switches as in the related art.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve these problems, and comprises: a main body terminal unit having a first battery for driving a mobile satellite communication terminal function;
A terrestrial portable terminal unit having a second battery for driving the terrestrial mobile terminal function is mechanically connected to and electrically connected to an engaging concave portion and an engaging convex portion provided in each terminal portion. Voltage detection means for detecting that the voltage level of the second battery has dropped, in a dual-mode mobile wireless terminal having a connector section provided in each terminal section,
When it is determined by the voltage detecting means that the power supply voltage is the final voltage, a power supply requesting unit for requesting power supply to the main body terminal unit and a power supply requesting unit are notified that there is a power supply request. There is provided a dual-mode mobile wireless terminal, comprising: a power supply unit for supplying power from a first battery to a second battery.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a dual mode mobile wireless terminal according to a mobile phone according to an embodiment of the present invention, wherein A is a main unit terminal provided with at least a key operation unit, a display unit, and an iridium terminal function excluding a voice conversion unit including a microphone and a speaker; Is a PHS with a well-known terrestrial mobile terminal function
And mobile terminals such as cellular phones.

The main body terminal A has a substantially vertical rectangular shape, and has a concave space 1 having a rectangular cross section over substantially the entire front wall surface, and a portable terminal B such as a PHS or a cellular phone is accommodated in the concave space 1. Configure as possible. As shown in FIG. 2, the engaging protrusion 4 has a substantially right-angled triangular shape having a wedge-like tip, and a spring 15 </ b> A is biased from the inside so that the tip of the engaging protrusion 4 is fitted into the engaging recess 11 on the portable terminal B side. It is configured to be engaged and fixed in position.

The height of the engaging projection 4 up to the tip wedge is arbitrarily set, and, for example, a portable terminal B having a plurality of different shapes (widths) of PHS and cellular can be attached. That is, the portable terminal B such as PHS or cellular used in the present embodiment has a connector housing portion 12 protruding from the bottom and an engagement wedge portion of the engaging projection 4 provided on the left and right sides. Assuming that the positions of the concave portions 11 match, this allows the portable terminals B1, B2 having different shapes (widths) to be attached as shown by the imaginary lines in FIG.

FIG. 3 is an internal block diagram of a dual mode mobile radio terminal according to an embodiment of the present invention. 20 in the figure
Is a terrestrial mobile terminal (herein referred to as a mobile terminal B), 30
Is a main body terminal (here, referred to as an iridium main body terminal), and a terrestrial mobile terminal 20 is a main body control section 21 for controlling this terminal.
And a voltage detector 2 for detecting a voltage of the main body controller 21.
2, a battery 24 for supplying power to the terminal, and a power switch 23 for switching between the battery 24 and a power supply from a battery 33 provided in the iridium main body terminal 30.

The iridium main terminal 30 has a main control unit 31 for controlling the terminal, a battery 33 for supplying power to the terminal, and a power supply from the battery 33 and the battery 24 provided in the terrestrial mobile terminal 20. And a power supply changeover switch 32 for changing over the power supply.

The operation will be described with reference to FIGS. Since the terrestrial mobile terminal 20 includes the battery 24, it can perform PHS or cellular communication separately from the iridium main terminal 30. Also, if the terrestrial mobile terminal 20 is fitted to the iridium main terminal 30 and used as required, satellite communication can be performed. Here, if the terrestrial mobile terminal 20 is used continuously while being separated from the iridium main body terminal 30, the voltage level of the battery 24 gradually decreases. At this time, the terrestrial mobile terminal 20
Is fitted to the iridium body terminal 30 and the terrestrial mobile terminal 2
0 requests the iridium main unit terminal 30 for a power supply command.

When the iridium main unit terminal 30 receives the power supply command from the terrestrial mobile terminal 20, the power switch 3 is provided so that power is supplied to the battery 24 from the battery 33 provided in the iridium main terminal 30.
2 and the power switch 23 are switched. Therefore, the battery 24 provided in the terrestrial mobile terminal 20 becomes operable by receiving power supply from the battery 33 provided in the iridium main body terminal 30.

[0012]

As described above, according to the present invention, when it is detected that the power supply voltage of the battery provided in the terrestrial mobile terminal detachable from the iridium main terminal has dropped, the terrestrial mobile terminal is fitted to the iridium main terminal. . And
If the terrestrial mobile terminal requests power supply to the iridium main terminal, the iridium main terminal can supply power from the battery provided in this terminal to the terrestrial mobile terminal, so that the talk time of the terrestrial mobile terminal is reduced. It can be easily extended.

[Brief description of the drawings]

1A and 1B show a dual mode mobile wireless terminal according to an embodiment of the present invention, wherein FIG. 1A shows a state in which a connector of an iridium main body terminal is depressed, FIG. 1B shows a state in which the connector is raised, (C) is a perspective view showing a state where the portable terminal is attached to the iridium main body terminal.

2A is a front view including a partially cut-away view of FIG. 1C, and FIG. 2B is a cross-sectional view taken along line aa of FIG. 1C with the internal mechanism omitted.

FIG. 3 is an internal block diagram of a terrestrial mobile terminal and an iridium main body terminal.

[Explanation of symbols]

 A, 30 body terminal 1 recessed space B, 20 mobile terminal 2 slide button 3 connector part 4 engagement recessed part 21, 31 body control part 22 voltage detection part 23, 32 power supply changeover switch 24, 33 battery

Claims (1)

[Claims] 1. A main terminal unit having a first battery for driving a mobile satellite communication terminal function and a terrestrial portable terminal unit having a second battery for driving a terrestrial mobile terminal function. In a dual-mode mobile wireless terminal in which a connector portion electrically connected and mechanically connects an engagement concave portion and an engagement convex portion provided in a terminal portion is provided in each terminal portion, a second battery Voltage detecting means for detecting that the voltage level has dropped, a power supply requesting part for requesting power supply to the main body terminal when the power supply voltage is determined to be the end voltage by the voltage detecting means, And a power supply means for supplying power from the first battery to the second battery when notified of a request for power supply by the unit. Dual-mode mobile wireless terminal.