JP2002152837A - Mobile phone and method for reducing its current consumption - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile phone where consumption of useless currents can be suppressed even when the mobile phone is provided with a communication function adopting a plurality of systems. SOLUTION: The mobile phone conducts call transmission/reception by the PDC(Personal Digital Cellular) system employing a wireless unit (PDC) 11 and a wireless control section (PDC) 21 and conducts call transmission/reception by the PHS system employing a wireless unit (PHS) 12 and a wireless control section (PHS) 22. A wireless control section 25 starts the PDC system consisting of the wireless unit (PDC) 11 and the wireless control section (PDC) 21 and the PHS system consisting of the wireless unit (PHS) 12 and the wireless control section (PHS) 22 in a standby state, stops the other of the PDC or PHS system when either of the PDC or PHS system is making a speech through call transmission/reception and starts again the other when the speech of the one of them is finished.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone having a communication function based on, for example, a PDC system and a PHS system.
When the S system is stopped and the PDC system call is terminated, the PHS
TECHNICAL FIELD The present invention relates to a mobile phone in which a system is restarted and a method for reducing current consumption thereof.

[0002]

2. Description of the Related Art As a method of reducing current consumption in a portable telephone, for example, Japanese Patent Application Laid-Open No. 4-79430 discloses a method of reducing current consumption by supplying a power supply voltage only to an intermittent reception circuit in a reception standby state. ing.

[0003]

However, the above-mentioned prior art has the following problems. A first problem resides in a mobile phone equipped with a dual mode function, which is a method for connecting to a mobile communication system of a different type with a single terminal, for example, a PDC type or a PHS type. That is, reduction of current consumption in the PHS system in a state where a telephone call is performed in the system is not considered.

[0004] The second problem is that if the current consumption reduction method is the intermittent reception method, for example, even when a call is originated and received by the PDC method, it is intermittently transmitted to the radio unit by the PHS method. Since the drive current is supplied, useless current is consumed.

The present invention has been made in view of such a situation, and a portable telephone capable of suppressing wasteful current consumption even if the portable telephone has a communication function using a plurality of methods. It is intended to provide a method for reducing current consumption.

[0006]

According to a first aspect of the present invention, there is provided a portable telephone provided with a communication function using a plurality of systems, wherein the first wireless means executes transmission and reception by a first system. A second wireless unit for performing transmission and reception by the second system, and in a standby state, activating the first and second wireless units, and either one of the first or second wireless unit is configured to perform transmission or reception. A wireless control means is provided for stopping the other of the first or second wireless means during a call and reactivating the other when one of the calls ends. In addition, the system includes an n-th wireless unit based on the n-th system, and the wireless control unit activates the first to n-th wireless units in a standby state, and sets any one of the first to n-th wireless units. When the call is in a call due to outgoing / incoming calls, the remaining of the first to n-th wireless means can be stopped, and when any of the calls is completed, the remaining can be activated again. Further, the first wireless unit includes a first wireless device that performs communication by the PDC system,
A first wireless control unit that controls a communication operation by the second wireless device, and the second wireless unit controls a communication operation by the second wireless device that performs communication by the PHS method and the second wireless device. And a second wireless control unit. Further, the n-th wireless means is a GSM system or a DECT
It is possible to include an n-th wireless device that performs communication by a system and an n-th wireless control unit that controls a communication operation by the n-th wireless device. The method for reducing current consumption of a mobile phone according to claim 5 is a method for reducing current consumption of a mobile phone having a communication function using a plurality of methods. A first step to be executed, a second step of performing transmission / reception by the second system by the second wireless unit, and a first control unit activating the first and second wireless units in a standby state by the wireless control unit. When either one of the first or second wireless means is in a call due to outgoing / incoming calls, the other of the first or second wireless means is stopped, and when one of the calls is finished, the other is activated again. And a third step. In the third step, in the standby state, the first to n-th wireless units including the n-th wireless unit of the n-th system included in the system are activated, and the first to n-th wireless units are activated.
A fourth step of stopping the rest of the first to n-th wireless units when any of the n wireless units is in a call due to outgoing / incoming calls, and reactivating the remaining units when any of the calls is completed. Can be In the first step, PD
A fifth step of performing communication using the C method by the first wireless device and a sixth step of controlling the communication operation of the first wireless device by the first wireless control unit are included. Is to include a seventh step of performing communication by the PHS system by the second wireless device and an eighth step of controlling communication operation by the second wireless device by the second wireless control unit. Can be. The step by the n-th wireless means includes a ninth step of performing communication by the GSM or DECT method by the n-th wireless device, and a communication operation by the n-th wireless device controlled by the n-th wireless control unit. And a tenth step to be performed. In the mobile phone and the method for reducing current consumption according to the present invention, the first wireless unit executes outgoing / incoming calls by the first system,
The second wireless means performs outgoing / incoming calls by the second system, and the wireless control means activates the first and second wireless means in a standby state, and either the first or second wireless means is activated. If one of the first or second wireless means is stopped when one of them is in a call due to outgoing / incoming calls and one of the calls ends,
Try to start the other again.

[0007]

Embodiments of the present invention will be described below.

(First Embodiment) FIG. 1 is a block diagram showing a first embodiment of a portable telephone according to the present invention, and FIGS. 2 and 3 show a method of reducing current consumption of the portable telephone of FIG. It is a figure for explaining.

[0009] The portable telephone shown in FIG.
Is a multifunction device that combines the PHS method and the PHS method.
11, radio (PHS) 12, LCD 13, radio control unit (PDC) 21, radio control unit (PHS) 22, LCD control unit 23, PDC / PHS switching control unit 24, radio control unit 25, operation system control unit 26 It has.

The wireless device (PDC) 11 operates when making and receiving calls by the PDC system. Radio (PHS) 12
Operates when making and receiving calls by the PHS method. The wireless control unit (PDC) 21 controls the operation of the wireless device (PDC) 11 according to a predetermined program. The wireless control unit (PHS) 22 controls the operation of the wireless device (PHS) 12 according to a predetermined program.

Here, the wireless device (PDC) 11 and the wireless control unit (PDC) 21 constitute first wireless means, and the wireless device (PDC) 11 is a first wireless device, and the wireless control unit (PDC) 21 is a first wireless control unit.

The wireless device (PHS) 12 and the wireless control unit (PHS) 22 constitute second wireless means, and the wireless device (PHS) 12 is a second wireless device and has a wireless control unit (PHS). PHS) 22 is a second wireless control unit.

The wireless device (PDC) 11 and the wireless control unit (PDC) 21 constitute a PDC system. The wireless device (PHS) 12 and the wireless control unit (PHS) 22
Construct an HS system.

The LCD 13 displays information relating to outgoing / incoming calls. The LCD control unit 23 controls the display operation of the LCD 13. The PDC / PHS switching control unit 24 controls the wireless control unit (PDC) 21 or the wireless control unit (PH
S) The control is switched by 22.

The radio control unit 25 as radio control means includes:
When a switching instruction is issued to the PDC / PHS switching control unit 24, or when either the PDC system or the PHS system is performing a calling / receiving operation, the other system not performing the calling / receiving operation is stopped. Let it. The operation system control unit 26 controls the LCD control unit 23 and the wireless control unit 25 according to the content of the key operation.
Then, a control instruction for a display operation, a switching instruction, and the like are performed.

Next, a description will be given of a method for reducing the current consumption of the portable telephone having such a configuration.

First, when the power of the mobile phone is turned on,
The wireless controller 25 activates the PDC system (step A1), and subsequently activates the PHS system (step A).
2). Thereby, the PDC wireless device (PDC) 11 and the wireless control unit (PDC) 21 and the PHS wireless device (PH)
When the S) 12 and the wireless control unit (PHS) 22 are driven, the PDC system and the PHS system enter a standby state.

Here, for example, when the PDC system performs a calling or receiving operation (step A3), the PHS system is stopped by the wireless control unit 25 (step A5), and the PDC communication process is performed. (Step A6). Then, when the call by the transmission or reception of the PDC system ends (step A7), the wireless control unit 25
The HS system is started again (step A8).

In (Step A4), the PHS
When the transmission / reception operation is performed by the system, the PDC system stop processing is executed by the wireless control unit 25 (step A9), and the PHC system call processing is executed (step A10). Then, when the call by the transmission or reception of the PHS system ends (step A11), the PDC system is activated again by the wireless control unit 25 (step A12).

Here, the current consumed by the PDC or PHS system stop processing by the radio control unit 25 is, as shown in FIG. The power consumption of the PHC system is reduced. Further, when the PHS system is busy, the power consumption of the PDC system is reduced by stopping the PDC system.

When the PDC system or PHS system communication ends, the stopped system is restarted.
The standby state of the C system and the PHS system is maintained.

As described above, in the first embodiment, the wireless device (PDC) 11 and the wireless control unit (PDC) 21
Performs outgoing / incoming calls using the PDC method, and sets the radio (PHS) 1
2. The outgoing / incoming call is executed by the PHS method by the wireless control unit (PHS) 22, and the wireless device (PDC) 11 and the wireless control unit (PDC) 2 are in the standby state by the wireless control unit 25.
The PDC system and PHS 12 of the wireless device (PHS) 12 and the PHS system of the wireless control unit (PHS) 22 are activated,
When one of the HS systems is in a call due to outgoing / incoming calls, PD
When the other of the C system or the PHS system is stopped and one of the calls ends, the other is restarted. Therefore, even if the mobile phone has a communication function using a plurality of methods, it consumes unnecessary current. Can be suppressed.

(Second Embodiment) FIG. 4 is a block diagram showing a second embodiment in which the configuration of the mobile phone of FIG. 1 is changed, and FIG. 5 is a diagram showing the current consumption of the mobile phone of FIG. It is a flowchart for demonstrating the reduction method. In the drawings shown below, the same parts as those in FIG. 1 are denoted by the same reference numerals.

The portable telephone shown in FIG.
System, PHS system, and GSM system. The wireless device (PDC) 11, the wireless device (PHS) 12, and the wireless device (GS
M) 12a, LCD 13, wireless control unit (PDC) 21,
Radio control unit (PHS) 22, radio control unit (GSM) 22
a, an LCD control unit 23, a PDC / PHS / GSM switching control unit 24a, a wireless control unit 25, and an operation system control unit 26.

The difference from the configuration of the portable telephone shown in FIG.
Radio (GSM) 12a and radio controller (GSM) 22
a is added, and the PDC / PHS / GSM switching control unit 24a performs switching control including the wireless control unit (GSM) 22a.

Here, the radio unit (GSM) 12a and the radio control unit (GSM) 22a constitute an n-th radio unit, and the radio unit (GSM) 12a is the n-th radio unit. (GSM) 22a is an n-th wireless control unit.

In FIG. 4, similarly to the above, a GSM system is constituted by the radio equipment (GSM) 12a and the radio control unit (GSM) 22a.

Next, a description will be given of a method of reducing the current consumption of the portable telephone having such a configuration.

First, when the power of the mobile phone is turned on,
The wireless controller 25 activates the PDC system (step B1), and subsequently activates the PHS system and the GSM system (steps B2 and B3).

Thus, a PDC wireless device (PDC)
11, a radio control unit (PDC) 21, a PHS radio (PHS) 12, a radio control unit (PHS) 22, GSM
System radio (GSM) 12a and radio control unit (GSM)
By driving the 22a, PDC system, PHS system, G
The SM system enters a standby state.

Here, for example, when the PDC system performs a calling or receiving operation (step B4), the radio control unit 25 executes a process of stopping the PHS system and the GSM system (step B7), and performs a call process of the PDC system. Is executed (step B8).

When the PDC system call or incoming / outgoing call ends (step B9), the PHS system and the GSM system are activated again by the wireless control unit 25 (step B9).
10).

In (Step B5), the PHS
When the system performs the outgoing or incoming operation, the wireless control unit 25 executes the PDC system and GSM system stop processing (step B15) and executes the PHC system call processing (step B16). Then, when the call by the transmission or reception of the PHS system is completed (step B17), the PDC system and the GSM system are activated again by the wireless control unit 25 (step B18).

In step B6, the GSM
When the system performs the outgoing or incoming operation, the wireless controller 25 executes the PDC system and PHS system stop processing (step B11), and performs the GSM system call processing (step B12). Then, when the call based on the outgoing or incoming call of the GSM system ends (step B13), the PDC system and the PHS system are activated again by the wireless control unit 25 (step B14).

Here, the current consumption due to the stop processing of the PDC system, the PHS system or the GSM system by the wireless control unit 25 in the second embodiment is, as described with reference to FIG. At this time, the power consumption of the PHC system and the GSM system is reduced by stopping the PHC system and the GSM system. Further, when the PHS system is busy, the PDC system and the GSM system are stopped, so that the PDC system and the GS system are stopped.
The power consumption of the M system is reduced. Further, when the GSM system is busy, the power consumption of the PDC system and the PHS system is reduced by performing the stop processing of the PDC system and the PHS system.

When the call of the PDC system, PHS system or GSM system ends, the system which has been stopped is restarted, so that the standby state of the PDC system, PHS system and GSM system is maintained.

As described above, in the second embodiment, for example, in the case of a multifunction device of the PDC system, the PHS system, and the GSM system, when any system is busy, the other systems are stopped. Therefore, the current consumption of the mobile phone can be suppressed low because the current consumption by the remaining system is cut.

In each of the above embodiments, the PDC
Although three systems of the system, the PHS system, and the GSM system have been described, the present invention is not limited to these three systems, and another system based on another DECT system may be included.

[0039]

As described above, according to the portable telephone and the method for reducing the current consumption of the portable telephone according to the present invention, the first wireless means executes the transmission and reception by the first system, and the second wireless means performs the transmission and reception by the second wireless means. In the standby state, the first and second wireless units are activated by the wireless control unit, and either one of the first and second wireless units is in a call during the outgoing / incoming call. At this time, the other of the first or second wireless means is stopped, and when one of the calls ends, the other is restarted. Therefore, even if the mobile phone is provided with a communication function using a plurality of methods, it is useless. Power consumption can be suppressed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a mobile phone according to the present invention.

FIG. 2 is a flowchart illustrating a method for reducing current consumption of the mobile phone of FIG. 1;

FIG. 3 is a diagram for explaining a method of reducing current consumption of the mobile phone of FIG. 1;

FIG. 4 is a block diagram showing a second embodiment when the configuration of the mobile phone shown in FIG. 1 is changed.

FIG. 5 is a flowchart illustrating a method for reducing current consumption of the mobile phone of FIG. 4;

[Explanation of symbols]

 Reference Signs List 11 radio (PDC) 12 radio (PHS) 12a radio (GSM) 13 LCD 21 radio control (PDC) 22 radio control (PHS) 22a radio control (GSM) 23 LCD control 24 PDC / PHS switching Control unit 24a PDC / PHS / GSM switching control unit 25 Wireless control unit 26 Operation system control unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K027 AA11 BB17 CC08 EE11 GG02 5K067 AA43 BB04 CC21 DD27 EE02 GG01 GG11 KK05

Claims (8)

[Claims] 1. A mobile phone provided with a communication function using a plurality of methods, a first wireless means for performing transmission and reception by a first system, and a second wireless means for performing transmission and reception by a second system. In a standby state, the first and second wireless means are activated, and when one of the first or second wireless means is in a call due to incoming and outgoing calls, the first or second wireless means is activated. A mobile phone, comprising: a wireless control unit that stops the other of the wireless units and restarts the other when the one call ends. 2. The wireless communication system according to claim 1, wherein the wireless communication means includes an n-th wireless means based on an n-th wireless means, and the wireless control means activates the first to n-th wireless means in the standby state. When any one of the first to nth wireless means is in a call due to outgoing / incoming calls, the remaining of the first to nth wireless means is stopped, and when the one of the calls is completed, the remaining one is activated again. The mobile phone according to claim 1. 3. The first wireless unit includes: a first wireless device that performs communication by a PDC method; and a first wireless control unit that controls a communication operation by the first wireless device. 2. The wireless device according to claim 1, wherein the second wireless unit includes a second wireless device that performs communication by a PHS system, and a second wireless control unit that controls a communication operation by the second wireless device. 3. Mobile phone. 4. The n-th wireless unit includes an n-th wireless device that performs communication according to a GSM system or a DECT system, and an n-th wireless control unit that controls a communication operation performed by the n-th wireless device. The mobile phone according to claim 2, wherein: 5. A method for reducing current consumption of a mobile phone having a communication function using a plurality of methods, comprising: a first step of making and receiving calls by a first system by a first wireless means; A second step of performing transmission and reception by the second system by the wireless means; and, in a standby state, activating the first and second wireless means in the standby state; A third step of stopping one of the first or second wireless means when one of the wireless means is in a call due to outgoing / incoming calls, and activating the other once the one of the wireless means is completed. A method for reducing current consumption of a mobile phone, comprising: 6. The third step includes, in the standby state, activating the first to n-th wireless means including an n-th wireless means by an n-th system included in the system, First
When any one of the wireless means of n.
6. The mobile phone according to claim 5, further comprising a fourth step of stopping the remaining of the first to n-th wireless means, and reactivating the remaining when one of the calls ends. How to reduce current consumption. 7. The method according to claim 7, wherein the first step is a fifth step in which communication by the PDC method is performed by a first wireless device.
And a sixth step of controlling a communication operation by the first wireless device by a first wireless control unit. The second step includes: performing communication by a PHS system by a second wireless device. 7th done by
6. The method according to claim 5, further comprising the step of: controlling a communication operation of the second wireless device by a second wireless control unit. 8. The step by the n-th wireless means includes: a ninth step of performing GSM or DECT communication by an n-th wireless device; and a communication operation by the n-th wireless device by an n-th wireless device. 7. The method according to claim 6, further comprising a tenth step of controlling by a wireless control unit.