JP2000201380A - Dual-function mobile terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the dual-function mobile terminal which is easyly used by a user for whom PDC is automatically changed to lower-charge PHS right after data generation. SOLUTION: A portable telephone process part (PDC part) mainly operates right after the dual-function mobile terminal is turned ON, and then after transmit data re generated and the mode is switched to a data transmission mode, a PHS process part 3 and an information process part (MMI part) mainly operate. At this time, if the terminal is outside an area that the PHS system covers, the portable telephone process (PDC) part 2 and a data card part 4 mainly operate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual function mobile terminal capable of accessing both a PDC system and a PHS / PIAFS private system, and in particular, a PHS with a lower charge is automatically selected from a PDC immediately after data generation. It is configured to be performed.

[0002]

2. Description of the Related Art A telephone having a conventional dual function is:
It was a simple integration of PHS and PDC. Therefore, both the telephone function and the data function have those functions of the PDC and the PHS as full specifications, and it is left to the user in which telephone method to wait. In particular, at the time of data transmission, when a user (user) selects a method with a low communication fee, it is necessary to always select one of the modes while paying attention to it, and the operation is complicated.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a dual-function mobile terminal that is easy to use for a user who selects a PHS with a lower price automatically from a PDC immediately after data generation. Is what you do.

[0004]

The telephone call function is limited to the PDC system only, and the data function has a PDC circuit switching system and a PHS / PIAFS self-management system.
S is limited to the calling function only, the operation mode immediately after turning on the power is the PDC telephone function mode, and when switching to data transmission at the time of data generation, only the PHS self-operating mode is functioning. It is intended to remove the complication of forced use.

[0005] Switching to the data transmission mode is performed when some kind of transmission data is generated.
Functions as C's mobile phone. In other words, immediately after the power is turned on, only the PDC is used for audio, transmission data is generated, and when switching to the data transmission mode, the switching operation is performed by the user, but switching from the PHS to the PDC after switching is automatically performed. Done in

[0006] The switching of the data transmission mode occurs at the time of data transmission, firstly, the PHS mode is set, and the PDC mode is automatically switched only when out of the service area. The user is not conscious of which method is selected. The reason that the PHS has only the self-owned mode is that if it is used in the self-owned mode, a public contract fee is not required, and it is expected that a great advantage will be provided to the user.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a flowchart showing a mode transition state according to the present invention.
Shows the hardware configuration of the entire mobile terminal of the present invention.

In FIG. 1, steps (in the drawing, S
t. Is abbreviated. ) Turn on the power at 11. After the power is turned on in step 12, the PDC enters the telephone mode. In step 13, it is determined whether or not there is transmission data.
In PHS / PIAFS, the mode is switched to the self-employed mode.
In step 18, the mode is switched to the data mode of PDC circuit switching. Further, in step 19, if the radio wave of the PDC has not arrived, step 21 waits for the arrival of either radio wave. If the PHS radio wave has arrived at step 22, the transmission process is performed at the PHS at step 17, and if the PDC radio wave has arrived at step 22, step 20
Performs transmission processing on the PDC. If there is no transmission data in step 13, it is used as a telephone in step 14, and waits for generation of transmission data.

In FIG. 2, a mobile terminal includes an information processing unit (MMI unit) 1 mainly for man-machine interface processing.
And a mobile phone processing unit (PDC unit) 2 and a PHS processing unit 3
And the data card section 4 and the communication means 5 between CPUs
The external 16-core connector 6 functions as an interface processing unit that connects the I unit 1 and the PDC unit 2, and controls an interface with an external device such as a personal computer.

The operation will be described with reference to FIGS. 1 and 2. Immediately after the power is turned on in step 11, the mobile phone processing unit (P
The DC unit 2 mainly operates. When transmission data is generated in steps 13 and 15 and switched to the data transmission mode,
The PHS processing unit 3 and the information processing unit (MMI unit) 1 mainly operate. If it is out of the PHS service area in step 16, the mobile phone processing section (PDC section) 2 and the data card section 4 mainly operate. The mobile terminal itself of FIG. 2 operates according to the processing flow of FIG.

[0011]

As is apparent from the above description, according to the present invention, the shortage of the radio channel of the PDC, which is tight for the communication carrier, can be compensated for by the PHS and the PDC complementing each other. .

Also, in a system using the PDC system, when an application is concentrated in a certain area during a certain time zone, a self-owned system (premise system) is constructed in the certain area. Can respond to traffic concentration. Therefore, complaints such as “not connect” from the terminal user can be reduced as much as possible.

Further, if the dual mobile terminal of the present invention is adopted, users and PHs who use only the PDC system
Many advantages can be enjoyed for a user who uses only the S system.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a mode transition state according to the present invention;

FIG. 2 is a diagram showing a hardware configuration of the entire mobile terminal of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Information processing part (MMI part) 2 Cellular phone processing part (PDC part) 3 PHS processing part 4 Data card part 5 CPU communication means 6 External 16 core connector

Claims (2)

[Claims] In a mobile terminal having both a telephone function and an information processing function, a telephone function has only a PDC system, and a data function has a PDC circuit switching system and PHS / PIAFS.
It has a dual function that has only a calling function in the self-employed method of
A dual function mobile terminal characterized in that the operation mode immediately after the power is turned on is the PDC telephone function mode, but only the PHS self-service mode functions immediately after switching to the data transmission mode. 2. In a mobile terminal having both a telephone function and an information processing function, a telephone function has only a PDC system, and a data function has a PDC circuit switching system and PHS / PIAFS.
It has a dual function that has only a calling function in the self-employed method of
The operation mode immediately after the power is turned on is the PDC telephone function mode, but immediately after switching to the data transmission mode, only the PHS self-operating mode functions. A dual function mobile terminal characterized by automatically switching to a PDC circuit switching mode.