JPH09331574A - Portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a speech without giving any effect onto a battery of a vehicle when an ignition of the vehicle is turned off during the speech. SOLUTION: A external power switch 8 is provided between a battery section 5 and an external power supply 9 in this portable telephone set 1 when an ignition is turned off, the external power switch 8 is open to allow the battery section 5 to supply power to the internal section. Then a control section 2 identifies whether a state is a speech state or an operation state, and in the case of the speech state or the operation state, the speech operation is maintained. When not, the control section 2 requests power-off to a power control section 6 to turn off power supply from the battery section 5 to the portable telephone set 1. In the case of ignition OFF, the speed or the operation is continued without imposing a load onto a vehicle battery 12.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a mobile phone,
In particular, the present invention relates to a mobile phone capable of maintaining a call even when the vehicle is being used and the ignition is off during the call.

[0002]

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

FIG. 2 is a block diagram showing an example of a conventional mobile phone.

In FIG. 2, this conventional portable telephone is
When the portable radio telephone device 101 is connected to the vehicle-mounted external device 113 and used in a vehicle, the first signal line 116 for transmitting the ignition state of the vehicle is turned on, which is disclosed in JP-A-5-153024. It is necessary to be.
That is, power is supplied to the mobile wireless telephone device 101 only when the ignition is on. This is because if the portable wireless telephone device 101 can be turned on or off regardless of the ignition of the vehicle, an over-discharged state of the vehicle battery may occur. When the ignition signal is turned on, the power supply control unit 118 is turned on, and the power supply 117 to the mobile wireless telephone device 101 is supplied to enable the call operation. Here, the portable wireless telephone device 101 is the first
It is detected that a signal in the ON state is transmitted from the control unit 112 to the signal line 116, and a signal for holding the power control unit 118 of the vehicle-mounted external device 113 in the ON state is transmitted to the second signal line 119. . In the call state, the second signal line 11 is used even when the vehicle is stopped (ignition off).
9 transmits a signal for turning on the power supply control unit 118,
Power is supplied to the mobile wireless telephone device 101. As a result, the call can be made even after the ignition is turned off.

[0005]

This conventional mobile phone transmits a signal for turning on the power supply control by the second signal line when the vehicle is turned off, and the mobile phone has a battery power source mounted on the vehicle. Since the power is supplied from the mobile phone to enable the telephone call, there is a problem that the use of the mobile phone may cause the vehicle-mounted battery power source to be over-discharged and the vehicle cannot be started.

[0006]

The mobile phone of the present invention comprises:
Interface means for the in-vehicle device that enables reception of an external power source by a vehicle battery and reception of an ignition signal from the vehicle via an in-vehicle device in the vehicle, battery power feeding means capable of internally feeding power by a built-in battery, and the vehicle In the case of being mounted in a vehicle and being powered from the external power source to the interior, the power supply switching means switches power supply to the interior from the external battery to the battery power supply means when the absence of the ignition signal is detected. .

The mobile phone according to the present invention is capable of receiving an external power source from a vehicle battery and receiving an ignition signal from the vehicle via an in-vehicle device in the vehicle, and a battery section for supplying power to the inside and the battery. Means for opening and closing power supply to the interior from a unit, a second switch for opening and closing power supply to the external power source, and a wireless unit for performing a telephone call and a wireless telephone call for data. According to the input of the operation unit for setting the internal operation by the key input of, the control unit for controlling each of the internal units, the presence or absence of the ignition signal, the key input from the operation unit and the control signal from the control unit. A power source control unit that controls the opening and closing of each of the first and second switches, and the power source control unit is configured to operate when the vehicle is used and is supplied with power from the external power source. Upon detecting the absence of the tone signal, the first switch turning on and off said second switch causes the power supply to the internal from the battery unit.

[0008]

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, a mobile phone 1 of this embodiment is capable of receiving an external power source 9 from a vehicle battery 12 and receiving an ignition signal 10 from the vehicle via an on-vehicle device 11 in the vehicle (not shown). And mobile phone 1
Battery part 5 for supplying power to the inside of the battery, a power switch 7 for turning on / off power supply from the battery part 5 to the inside, and an external power supply 9
An external power switch 8 for turning on / off the power supply from the inside to the inside, and a wireless unit 4 for making a wireless call for data calls and data,
An operation unit 3 that sets the operation inside the mobile phone 1 by manual key input, and a control unit 2 that controls the inside of the mobile phone 1.
ON / OF of the power switch 7 and the external power switch 8 according to the presence or absence of the ignition signal 10, the key input from the operation unit 3 and the input of the control signal from the control unit 2.
And a power supply control unit 6 for controlling F.

Next, the operation of this embodiment will be described.

When the mobile phone 1 is connected to the in-vehicle device 11,
An external power source 9 is supplied from the vehicle battery 12 from the vehicle-mounted device 11. Further, the power supply control unit 6 monitors the ON / OFF state of the ignition with the ignition signal 10. If it is ON, "external power supply ON" is possible, and the power supply to the inside of the external power supply can be turned ON / OFF by the external power supply ON / OFF operation on the operation unit 3. OFF
Then, the external power switch 8 is turned off, and the power supply from the external power supply 9 is cut off. For this reason, the ignition O
Since the power is not supplied from the vehicle battery 12 during the FF, there is no possibility that the vehicle battery 12 is over-discharged. Then, the mobile phone 1 becomes operable by turning on the power switch 7. For this reason,
Even if the ignition is turned off during a call, it is possible to maintain the call state by supplying power from the battery unit 5 to the inside without turning off the power supply to the inside.

When the ignition is off and the vehicle is connected to the in-vehicle device 11, the user of the mobile phone 1
It is considered that the mobile phone 1 is often away from the place, and in order to suppress the consumption of the battery 5,
When the operation is not performed, the control from the control unit 2
The power supply from the battery unit 5 is turned off. During the power supply OFF, the power supply control unit 6 constantly monitors the key input from the operation unit 3, and when there is any key input from the operation unit 3, the power switch 7 is turned ON and the battery unit 5 to the inside of the mobile phone 1 are turned on. The operability is improved by enabling the power supply to.

[0014]

As described above, according to the present invention, an interface means for an on-vehicle device capable of receiving an external power source from a vehicle battery and receiving an ignition signal from the vehicle via the on-vehicle device in the vehicle, and a built-in battery. The battery power supply means that can supply power to the inside and the power supply switching means that switches the internal power supply from the external battery to the battery power supply means when the absence of an ignition signal is detected when the vehicle is mounted in the vehicle and is powered from the external power supply By including the above, there is an effect that it is possible to prevent the vehicle battery from being over-discharged and to maintain the call by supplying power from the built-in battery during the call.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mobile phone 2 Control part 3 Operation part 4 Radio part 5 Battery part 6 Power supply control part 7 Power switch 8 External power switch 9 External power supply 10 Ignition signal 11 In-vehicle equipment 12 Vehicle battery

Claims (3)

[Claims] 1. An interface means for the in-vehicle device, which enables reception of an external power source by a vehicle battery and reception of an ignition signal from the vehicle through an in-vehicle device in the vehicle, and battery power supply capable of supplying power internally by a built-in battery. And a power supply switching means for switching the power supply to the inside from the external battery to the battery power supply means when the absence of the ignition signal is detected when the power is supplied to the inside from the external power source mounted in the vehicle. And a mobile phone. 2. A battery unit for supplying electric power to the inside and an internal power supply unit, which enables an external power supply from a vehicle battery to be received and an ignition signal from the vehicle to be received via an in-vehicle device in the vehicle. A power switch for opening and closing the power supply of the external power source, a second switch for opening and closing the power supply to the inside of the external power source, a wireless unit for performing a call and a wireless call for data, and a manual key input. An operation unit that sets the internal operation, a control unit that controls each of the internal units, the presence or absence of the ignition signal, a key input from the operation unit, and a control signal input from the control unit according to the first and A mobile phone having a power supply control unit that controls opening and closing of each of the second switches. 3. When the vehicle is used in a vehicle and is supplied with power from the external power source, the power source control unit turns on the first switch and turns off the second switch when detecting the absence of the ignition signal. The mobile phone according to claim 2, wherein power is supplied from the battery unit to the inside.