JPH0591041A - Portable telephone set - Google Patents

Abstract

PURPOSE:To suppress depletion of a battery without operating a standby function in the case of carrying by inactivating a waiting function when it is not required to care about consumption of a battery such as during charging of the battery to accept a call from a concerned party. CONSTITUTION:The portable telephone set has a control section including an MPU 2 and the control section 1 detects it whether or not a secondary battery 19 is charged by a charge control section 20. Based on the result of detection, a reception section of the portable telephone set is energized during charging of the battery via the control section 1 and when the battery is not charged, the control section 1 controls a transmission reception circuit section 10 of the portable telephone set is energized at talking.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone device, and more particularly to a portable telephone device in which the function of a receiving section is stopped except when charging a battery or at a specific time.

[0002]

2. Description of the Related Art Recently, mobile phone devices have become smaller and lighter, and more and more portable devices have been available. However, the mobile phone device generally consumes a large amount of power, and for example, in the case of a mobile phone device using a nickel-cadmium battery with a large battery capacity, the continuous usable time of the mobile phone device is set under the condition where the nickel-cadmium battery is fully charged. It takes only about an hour to start talking.
In addition, since the power consumption is high not only during a call but also in a standby reception state, the time during which an actual call can be made becomes considerably shorter than the above time. Therefore, there is a proposal to prevent the standby operation, to perform the minimum necessary transmission / reception function, to suppress the consumption of the battery, and to avoid the situation where you cannot talk due to the dead battery when you want to talk. Has been done.

A next-generation cordless telephone system, which is currently under study, that is, a mobile phone, can be used at home like a cordless phone of the current cordless telephone, and can be used on the street. Similar proposals have been made in a telephone system that can be used as an existing mobile phone.

[0004]

[Problems of the prior art] However, if the standby function is completely abolished, it becomes impossible to accept calls from the parties concerned, which is extremely inconvenient.

[0005]

SUMMARY OF THE INVENTION In consideration of the above-mentioned conventional problems, the present invention provides
When it is not necessary to worry about battery drain, such as when the battery is being charged, a standby function is added so that calls from related parties can be accepted, and the standby function is not activated when carrying the battery to reduce battery consumption. An object is to provide a mobile phone device that can be suppressed.

[0006]

SUMMARY OF THE INVENTION In a portable telephone device using a secondary battery as a power source, the above-mentioned object is to detect a battery based on charge detection means for detecting whether or not the battery is being charged and a detection output obtained by the charge detection means. A control means is provided for supplying power to the receiving section of the mobile phone device during charging so that the standby operation is allowed, and supplying power to the transmitting / receiving circuit part of the mobile phone device during a call while the battery is not charged. This is achieved by providing a mobile phone device that

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, the mobile phone device of this embodiment has a control unit 1, and a microprocessor unit (MPU) 2 is provided in the control unit 1. A ROM 3 and a RAM 4 are connected to the MPU 2, and a telephone number storage area, a setting data storage area for a timer described later, and the like are assigned to the RAM 4. R
A telephone ID code and a control program are written in the OM3.

A display device 5 such as a liquid crystal display device is connected to the MPU 2 via a driver 6, and a signal output line of a key input unit 7 is connected. A timer 8 for measuring the passage of a predetermined time is connected to the MPU 2, and the switching transistor 17 is controlled by the operation of the timer 8 so that standby reception can be performed when necessary.

The portable telephone device is provided with a communication circuit section 9, which is a transmission / reception circuit section 10, a transmission / reception signal processing section 11, a voice signal processing section 12 and a transmission / reception control section 1.
Have three. A speaker 14 for reception and a microphone 15 for transmission are connected to the audio signal processing unit 12.

The transmission / reception circuit unit 10 transmits / receives a radio signal via the antenna 21 through a channel (a transmission control channel, an incoming control channel, a plurality of communication channels) designated by the transmission / reception control unit 13 and modulates / demodulates the radio signal. A circuit unit for performing the above, and includes a transmission system circuit unit and a reception system circuit unit.

The transmission / reception signal processing unit 11 is a circuit unit for processing signals transmitted / received on the transmission control channel, the reception control channel, and the communication channel, for example, for synchronization and error correction. And a receiving system circuit section.

The transmission / reception control unit 13 controls the power supply of the transmission / reception circuit unit 10, the transmission / reception signal processing unit 11 and the voice signal processing unit 12 based on the control signal from the MPU 2, the channel switching control, the transmission / reception signal processing unit. 11 is a circuit unit for exchanging signals with the MPU 2 and the MPU 2.

A small speaker, a piezoelectric vibrating plate or other sounding body 16 is connected to the output port of the MPU 2.
When there is an incoming call by the sound producing body 16, the fact can be notified to the user.

On the other hand, the plus power supply line of the communication circuit section 9 is connected to the power supply circuit 18 via the switching transistor 17, and the base of the switching transistor 17 is connected to the output port of the MPU 2. The positive power supply line of the control unit 1 is connected to the power supply circuit 18.

A secondary battery 19 is connected to the power supply circuit 18, and the negative terminal of the secondary battery 19 is grounded. Both terminals of the secondary battery 19 are connected to the output line of the charge controller 20.

The charging control unit 20 outputs an output line having a positive voltage (for example, 1.5 V) at the time of charging, and this output line is connected to the input port of the MPU 2 and is connected to the MPU.
2 can detect whether the battery is being charged.

The method of outputting the output line will be described in some detail. Power is supplied from the output of the rectifier circuit to the secondary battery 19 via a resistor and a diode, and the output line is drawn from the anode side of the diode. To do. At that time, T
If it is necessary to divide the voltage in order to adjust the voltage to the TL level, it is sufficient to connect the anode of the diode and the ground path with two resistors and draw the output line from the connection part of both resistors. With this configuration, the secondary battery 1
The voltage of 9 is blocked by the diode during non-charging and is not applied to the output line. During charging, a voltage is applied to the output line from the rectifier circuit side of the charge controller 20. Therefore, it is possible to detect whether or not the secondary battery 19 is being charged.

As described above, this portable telephone device detects whether or not the battery is being charged, turns on / off the switching transistor 17 according to the result, and activates the communication circuit section 9 while the battery is being charged. A standby operation is performed, and the communication circuit unit 9 is configured to operate only during a call based on an outgoing call while the battery is not charged. In addition, even when not charging
The standby operation is maintained until the predetermined time set in the timer 8 elapses from the end of charging. In addition, after detecting a ringing signal addressed to itself during this standby operation period, it is necessary to answer the call addressed to itself even if the standby operation period is completed due to the end of battery charging etc. From until the end
The power supply to the communication circuit unit 9 is maintained. It should be noted that although the shift from the standby mode to the call mode is automatically performed, the keypad 2 described later is used.
It is also possible to manually switch between the standby mode and the talk mode by pressing any of the keys of 3.

The above-described control can be performed by causing the CPU to execute a control program in which known instructions such as read / write commands for input / output ports and judgment commands are combined.

FIG. 2 is a perspective view showing the appearance of the portable telephone device. In the figure, a keypad 23 forming a part of the key input unit 7 and the display 5 are provided on the upper surface of the housing 22, and the earpiece 24 for the earpiece speaker 14 and the earpiece for transmission are provided. A transmission hole 25 facing the microphone 15 and a sound output hole 27 facing the sounding body 16 are formed. In addition, battery charging terminals 26, 2 are provided on the side wall of the housing 22.
6 is formed.

When the mode key of the keypad 23 is operated, operation modes are selected one after another, and when several kinds of operation modes are selected, the operation mode is returned to the initial operation mode. As operation modes, a normal mode in which a call key can be operated to make a call, a telephone number setting mode for recording a telephone number in the telephone number storage area of the RAM 4, and a time for the timer 8 are set. There is a timer time setting / changing mode for changing or changing the time, and a clock mode for displaying the current time.

Since the mobile telephone device of this embodiment is a telephone device dedicated to making a call and normally does not perform standby reception, the switching transistor 17 is turned off.
The switching transistor 17 is turned on from the time when the call key is operated to the time when the call end key is operated, and during charging or until a predetermined time elapses after the start of charging until the end of charging. Is becoming

When the calling key is operated during non-charging (when in a normal state such as when carrying), the MPU
6 makes the switching transistor 17 conductive. Thereby, the communication circuit unit 9 is supplied with power. Then, the MPU 6 sends a call instruction to the transmission / reception control unit 13. As a result, the transmission / reception control unit 13 controls the transmission circuit unit of the transmission / reception circuit unit 10 to transmit a calling signal using the transmission control channel. If there is an incoming call from the other party in response to this calling signal, it becomes possible to talk with the other party. The power supply to the voice signal processing unit 12 may be performed simultaneously with the power supply to other circuits of the communication circuit unit 9, or immediately after the call line is connected due to an incoming call response from the other party. ..

While the battery is being charged, when the MPU 2 detects that the MPU 2 is being charged by the signal from the charge control unit 20, the switching transistor 17 is turned on to supply power to the communication circuit unit 9. And the M
The PU 2 sends a reception command to the transmission / reception control unit 13.
Accordingly, the transmission / reception control unit 13 controls the reception circuit unit of the transmission / reception circuit unit 10 to receive a signal on the incoming control channel. That is, the standby reception state is set. As a result, when the receiving circuit section of the transmitting / receiving circuit section 10 receives its own calling signal, the sounding body 16 is sounded to notify the incoming call. When the user responds to this and operates the calling key, the MPU 2 sends a response command to the transmission / reception control unit 13. As a result, the transmission / reception control unit 13 sends a response signal from the transmission circuit unit of the transmission / reception circuit unit 10 using the incoming control channel. Then, a call becomes possible via the voice signal processing section 12. It should be noted that the power supply to the communication circuit unit 9 in the standby reception state may be intermittent power supply in order to reduce battery consumption as much as possible.

In the above embodiment, the call-only telephone device that does not normally receive standby is described as an example. However, even a normal telephone device that performs standby reception can be switched to only call-out by mode switching or the like. The present invention can of course be applied to any telephone device capable of performing the above.

[0026]

As described in detail above, according to the present invention, the standby function is provided when it is not necessary to care for the consumption of the battery such as during charging of the battery. Can be accepted, and the standby function is configured not to operate when the user goes out on the street and is carried, so that battery consumption can be suppressed. Therefore, it is possible to obtain a very convenient mobile phone device that can effectively use the originally provided function.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing an appearance of a mobile phone device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 control part 2 MPU 3 ROM 4 RAM 5 display device 6 driver 7 key input part 8 timer 9 communication circuit part 10 transmission / reception circuit part 11 transmission / reception signal processing part 12 voice signal processing part 13 transmission / reception control part 14 reception speaker 15 transmission Microphone 16 Sounding body 17 Switching transistor 18 Power supply circuit 19 Secondary battery 20 Charge controller

Claims (6)

[Claims] 1. In a mobile phone device using a secondary battery as a power source, charging detecting means for detecting whether or not the battery is being charged, and charging of the battery based on a detection output obtained by the charging detecting means. Is provided with a control means for supplying power to the receiving part of the mobile phone device so that the standby operation is allowed, and supplying power to the transmission / reception circuit part of the mobile phone device during a call while the battery is not charged. Mobile phone device. 2. The portable telephone device measures a time elapsed from the time when charging of the battery is completed based on the detection output obtained by the charge detection means, and the timer detects a predetermined time elapsed. The mobile phone device according to claim 1, further comprising a standby operation maintaining unit that maintains the standby operation until a predetermined time. 3. The mobile phone device, after detecting a call signal addressed to itself, responds to a call addressed to itself or terminates even if the detection output is not obtained by the charging detection means. The mobile phone device according to claim 1 or 2, further comprising a reception maintaining unit that maintains power supply to the reception unit until a speech signal is detected. 4. In a mobile phone device using a secondary battery as a power source, power is supplied to a receiving unit of the mobile phone so that a standby operation is allowed, and a transmission / reception circuit unit of the mobile phone device is allowed to allow a call operation. Based on the detection output obtained by the charge detection means, the operation selection means for selecting whether to supply power to the battery, the charge detection means for detecting whether or not the battery is being charged, and the selection state of the operation selection means. Regardless of the above, a mobile phone device is provided with control means for setting a standby operation while the battery is being charged. 5. The mobile phone device, based on the detection output obtained by the charge detection means, a timer for measuring an elapsed time from the time when the battery is completely charged, and the timer detects a predetermined elapsed time. 5. The mobile phone device according to claim 4, further comprising standby operation maintaining means for maintaining the standby operation until the standby time. 6. The mobile phone device, after detecting a call signal addressed to itself, responds to the call addressed to itself or terminates even if the detection output is not obtained by the charging detection means. The mobile phone device according to claim 4, further comprising a reception maintaining unit that maintains power supply to the receiving unit until a speech signal is detected.