JP3088312B2 - Mobile phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mobile telephone,
In particular, the present invention relates to a mobile telephone having a battery charge control function.

[0002]

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

FIG. 3 is a block diagram showing a first mobile station (slave unit) of a cordless telephone system as a first conventional example, and FIG. 4 is a second conventional example used in the cordless telephone system of FIG. 3 as a second conventional example. FIG. 3 is a block diagram showing a mobile station (child device).

FIGS. 3 and 4 show the contents disclosed in Japanese Patent Application Laid-Open No. Hei 4-329724. In FIG. 3, a CPU 114 controls a transmitting circuit 111 and a receiving circuit 112, and : Not shown) to form a wireless communication path by wireless communication,
8. The microphone 109 and the audio circuit 110 are controlled to form a communication path with a telephone line via a base station (base unit). The power supply circuit 117 is provided with the AC power input means 11.
6 supplies the power supply current to the audio circuit 110, the transmission circuit 111, the reception circuit 112, and the CPU 114. The power supply circuit 117 further includes a charging current supply circuit 11
8 is also supplied with a power supply current,
The charging current can be supplied to another mobile station as shown in FIG. 4 differs from FIG. 3 in that the battery 129 supplies the power supply current to the power supply circuit 128. Further, the battery 129 can be charged by a charging current supplied from the charging terminal 131 via the charging circuit 130.

As described above, according to this conventional example, a mobile station having the shape of a standard telephone such as a black telephone is usually installed and used on a desk or the like, and power is supplied from an AC power supply. Stable use becomes possible by receiving it. Other mobile stations that require charging at the same time (slave unit: Fig. 4)
By providing a function to supply the charging current,
The mobile station (slave) shown in FIG. 4 can be charged while talking with the telephone line like the mobile station (slave) shown in FIG. Furthermore, the number of chargers can be reduced in the overall configuration of the cordless telephone system, and the configuration can be simplified and the circuit can be shared.

[0006]

In the case of the first mobile station (slave unit) shown in FIG. 3, the conventional mobile telephone has a configuration in which electric power is supplied internally by an AC power input means. Therefore, there is a problem that the first mobile station (slave unit) cannot be used unless it is always connected to the AC power supply via the AC power input means.

In the case of the second mobile station (slave unit) shown in FIG. 4, since power is supplied internally by a battery, unlike the first mobile station (slave unit), No power is required, but if the battery goes into a low voltage state during a call, connect to the charging terminal of the first mobile station (slave unit) and continue the call unless the battery is charged There is a problem that can not be.

Further, since there is no means for informing when the battery is in a low voltage state during a call, there is a problem that a call in a low voltage state is naturally terminated.

Further, the second mobile station (slave) is configured to be connected to a charging terminal of the first mobile station (slave) to charge a battery, and the first mobile station (slave). The second mobile station (slave unit) cannot operate with the power from the charging terminal of the second mobile station (slave unit), so that the battery of the second mobile station (slave unit) cannot be replaced during a call. There is a point.

[0010]

The mobile telephone according to the present invention comprises:
Detecting means for inserting an AC jack into an outlet of an external AC adapter for performing AC / DC conversion enabling charging of a built-in battery and supply of DC power to an internal circuit, detecting power reception, and transmitting a detection signal; Notification means for notifying an alarm indicating that the battery voltage has fallen below a preset voltage, and receiving the detection signal from the detection means when the battery voltage has fallen below the preset voltage, and Control means for charging with power from the adapter and controlling the internal circuit to operate, wherein the control means does not detect the detection signal during a call, and sets a timer for a preset possible period of the call. And controlling the notifying means to notify the alarm, and the control means detects the internal signal from the battery when detecting the detection signal. From the power supply to the circuit containing the switching means to switch the power supply from the AC adapter.

A mobile telephone according to the present invention comprises: a transmitting / receiving apparatus for transmitting / receiving a call signal from / to a base station; and a transmitting / receiving apparatus for converting a radio signal received from the transmitting / receiving apparatus into a baseband signal and vice versa. A baseband signal conversion unit to send out to the LED and the speaker a notification information and reception information and a low-voltage alarm of the battery at the time of an incoming call through the baseband signal conversion unit, communication information and charging of the battery and A key portion for inputting information regarding replacement with a new battery, input information from the key portion, reception input information from the baseband conversion portion, and the low-voltage state of a predetermined voltage or less of the battery. A display unit for displaying, a memory for storing the reception input information, and the battery for supplying power to the internal device and each unit , And it can be connected to an AC power source AC / DC
An AC jack detection unit that detects power reception by inserting a jack into an external AC adapter that performs conversion;
A control unit that controls the internal device and each unit by a jack detection unit or the power from the battery and by the input information from the key unit, and the control unit controls the base unit via the wireless unit. Recognizing the presence or absence of an incoming call by a signal from the band conversion unit, outputting input information to the display unit based on the input information from the key unit, performing transmission control through the wireless unit via the baseband conversion unit, Detecting that the battery voltage has become lower than a predetermined set voltage, outputting alarm information, performing notification control on the speaker, the LED, and the display unit, and performing communication during the call via the baseband conversion unit. When detecting below the set voltage of the battery during the detection, a timer for a preset talkable period is set, and the timer from the AC jack detection unit is set. It was controlled to charge the battery and detecting the electrostatic and controls to supply power from the power receiving into the device and each unit.

[0012]

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a simplified portable telephone according to an embodiment of the present invention.

In FIG. 1, a simplified portable telephone according to the present embodiment includes a transmitting / receiving device 2 for transmitting and receiving a call signal from a base station (not shown) through an antenna 1 via a wireless line, and A baseband signal conversion unit (BBC) 3 which converts a received radio signal into a baseband signal and performs the reverse conversion and sends the converted signal to the transmission / reception apparatus 2;
A drive unit 4 for outputting notification information and reception information and a low-voltage alarm of the battery 8 to the LED 6 and the speaker 5 at the time of an incoming call through the BBC 3, and a key for inputting communication information and information regarding charging of the battery 8 and replacement with a new battery. A display unit 11 for displaying input information from the key 12, received input information from the BBC 3, and a low voltage state of the battery 8 below a preset voltage, and a memory 10 for storing the received input information. , A battery 8 for supplying power to internal devices and various parts, and an AC
AC jack detection unit 7 for detecting power reception by inserting a jack into external AC adapter 20 for performing DC / DC conversion
And a control unit 9 for controlling the internal device and each unit by the power from the AC jack detection unit 7 or the battery 8 and the input information from the key 12.

The control unit 9 has the following functions.

The presence or absence of an incoming call is recognized based on a signal from the BBC 3 via the wireless unit 2, input information is output to the display unit 11 based on input information from the key 12, and transmission control is performed through the wireless unit 2 via the BBC 3. Detects that the voltage of the battery 8 has become equal to or less than a preset voltage, outputs alarm information, performs notification control on the speaker 5, the LED 6, and the display unit 11, and detects that a call is in progress via the BBC 3. When a voltage lower than the set voltage of the battery 8 is detected, a timer for a preset talkable period is set, and when power reception from the AC jack detection unit 7 is detected, the battery 8 is controlled to be charged. Control to supply power by receiving power.

FIG. 2 is a flowchart showing a control procedure for detecting the low voltage of the battery in the portable cellular phone shown in FIG.

Next, the battery control in the portable cellular phone according to the first embodiment will be described based on FIG. 2 with reference to FIG.

When detecting a drop in the battery level of the battery 8 during a call (S1) (S2), the control section 9 monitors the AC jack detection section 7 (S3). A talk time timer is set (S6), and if there is no recovery of the battery level (S7), the wireless connection is disconnected with a talk time timeout (S9) (S10). While the talk time timer is running, the speaker 5, the LED 6, and the display unit 11 notify the user of an alarm indicating a low battery voltage (S 8). If there is a charge detection through the AC jack detection unit 7 during the operation of the talk time timer after the voltage level drops (S3), the talk time timer is reset (S4) and the charge control for the battery 8 is performed (S3).
5) The call can be continued.

If the battery level is restored in S7, the talk time timer is reset (S11), and the talk can be continued.

In the low voltage detection of the battery 8 other than the call operation, the connection with the AC adapter is detected by the AC jack detection unit 7.

As described above, even when the remaining battery level of the battery 8 is reduced, it is possible to continue using the talking state.

As described above, the portable cellular phone according to the present embodiment includes the low-voltage detecting means in the control section 9 to detect the voltage of the battery 8 and determine whether the communication is possible. Even when the battery 8 is in a low voltage state, power is supplied to the inside while charging the battery 8 by supplying AC power through the externally connected AC jack detection unit 7, so that the user can be aware of the remaining battery level. It is possible to continue the call state.

Further, the AC jack detection unit 7 is connected to an external A
While connected to a C / DC conversion AC adapter and receiving the supply of DC power from the AC adapter, the internal battery 8 can be replaced with a fully charged battery by a switching input from the key 12 even during a call.

[0025]

As described above, according to the present invention, an AC jack is inserted into an outlet of an external AC adapter which performs AC / DC conversion enabling charging of a built-in battery and supply of DC power to an internal circuit. Detecting means for detecting a power reception and transmitting a detection signal, notifying means for notifying that the battery has dropped below a preset voltage, and detecting means for detecting when the battery has fallen below the setting voltage. Control means for charging the battery with the power from the AC adapter when receiving the detection signal, and controlling the internal circuit to operate , wherein the control means does not detect the detection signal during a call.
Set a timer for the preset possible period of the call if
And control the notifying means to notify the alarm,
When the control means detects the detection signal, the control means switches from the battery to the internal circuit.
Switched from power supply to power supply from AC adapter
By including the switching means for switching, even if the battery voltage becomes equal to or lower than the set voltage during the call, there is an effect that the call can be continued by connecting the AC jack of the detecting means to the AC adapter connected to the AC.

Further, by providing the AC adapter outside the mobile phone main body instead of being built in the mobile phone main body, there is an effect that the mobile phone main body can be made small and light.

Further, if the control means does not detect the detection signal during the call, the control means sets a timer for a preset possible period of the call and controls the notifying means to notify the alarm, thereby notifying the alarm during the call. By connecting the AC jack of the detection means to an external AC adapter within a preset possible period of the call,
There is an effect that a call can be prevented from being disconnected.

Furthermore, the control means includes a switching means for switching from the power supply from the battery to the internal circuit to the power supply from the AC adapter when the detection signal is detected. It is possible to replace the battery in use with a fully charged battery and continue talking, and after replacing the battery, remove the AC jack from the AC adapter and continue talking with the battery replaced only by the mobile phone.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing a low-voltage detection control procedure in the portable cellular phone shown in FIG.

FIG. 3 is a block diagram showing a first mobile station (slave unit) of a cordless telephone system as a first conventional example.

FIG. 4 is a block diagram showing a second mobile station (child device) used in the cordless telephone system of FIG. 3 as a second conventional example.

[Explanation of symbols]

 Reference Signs List 1 antenna 2 transmission / reception device 3 baseband signal conversion unit (BBC) 4 drive unit 5 speaker 6 LED 7 AC jack detection unit 8 battery 9 control unit 10 memory 11 display unit 12 key 20 AC adapter

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02J ⁷ /00-7/12 H02J 7/34 H04B 7/26 H04M 1/00 H04M 1/24 H04M 1/58-1 / 62 H04M 1/66-1/78

Claims (3)

(57) [Claims] 1. Charge of built-in battery and D to internal circuit
Detecting means for inserting an AC jack into an outlet of an external AC adapter for performing AC / DC conversion enabling supply of C power, detecting power reception and transmitting a detection signal, and setting the battery to a predetermined set voltage Notifying means for notifying an alarm indicating that the battery has become below, and upon receiving the detection signal from the detecting means when the battery becomes equal to or less than the set voltage, the battery is charged with power from the adapter and Control means for controlling the internal circuit to operate, wherein the control means detects the detection signal during a call.
If not, a timer for the preset possible duration of the call
To set the alarm, and to notify the alarm
Controlling the notification means, the control means detecting the detection signal
Then, before the power supply from the battery to the internal circuit,
Switching means for switching to power supply from an AC adapter
A mobile telephone comprising: 2. A transmitting / receiving apparatus for transmitting / receiving a communication signal from / to a base station, and a baseband for converting a radio signal received from the transmitting / receiving apparatus into a baseband signal and performing a reverse conversion to transmit the signal to the transmitting / receiving apparatus. A signal conversion unit, a drive unit for outputting notification information and reception information and a low-voltage alarm of the battery to the LED and the speaker at the time of an incoming call through the baseband signal conversion unit, communication information, charging of the battery, and replacement with a new battery A key unit for inputting information about the key unit, a display unit for displaying the input information from the key unit and the reception input information from the baseband conversion unit, and the low voltage state below a preset set voltage of the battery. A memory that stores the reception input information, and the battery that supplies power to the internal device and each unit,
An external AC that can be connected to an AC power supply and performs AC / DC conversion
An AC jack detection unit that detects power reception by inserting a jack into the adapter; and the internal device and each unit by the AC jack detection unit or the power from the battery and the input information from the key unit. A mobile phone, comprising: a control unit for controlling the mobile phone. 3. The control unit recognizes whether there is an incoming call through a signal from the baseband conversion unit via the wireless unit, and outputs input information to the display unit based on the input information from the key unit. A transmission control is performed through the wireless unit through the baseband conversion unit, and when the voltage becomes lower than a preset set voltage of the battery, alarm information is output to the speaker, the LED, and the display unit. And performing a notification control on the battery, and detecting a voltage lower than the set voltage of the battery while detecting a call in progress through the baseband converter, sets a timer for a preset talkable period, and sets the AC jack 3. The power supply apparatus according to claim 2, wherein when power reception from the detection unit is detected, control is performed to charge the battery, and control is performed to supply the power by the power reception to the apparatus and each unit. The mobile telephone of.