JPH0591018A - Portable telephone system - Google Patents

Abstract

PURPOSE:To obtain a portable telephone system in which waiting reception is implemented only at the time of necessity and a waiting function is not operated usually to suppress the consumption of a battery. CONSTITUTION:The portable telephone system is provided with a timer 8 counting the lapse of a prescribed time, a key input section 7 controlling the operation of the timer 8, and a switching transistor(TR) 17 controlling power supply to the reception section of a transmission/reception circuit section 10 till the prescribed time elapses after the start of the timer 8. Thus, the waiting function to an incoming call is enhanced only at the time of necessity.

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 that does not have a standby function for incoming call signals or can cancel the standby function.

[0002]

2. Description of the Related Art Recently, mobile phones have been remarkably popularized, and many people have come to use them. Also,
The latest mobile phone devices are becoming smaller and lighter, and more and more portable devices are available. However, mobile phone devices generally consume large amounts of power. For example, in the case of the latest mobile phone device using a nickel cadmium battery having a large battery capacity, the continuous talk time is only about one hour even if a call is started under the condition where the nickel cadmium battery is fully charged. In addition, since the power consumption is high not only during a call but also in a waiting state for an incoming call, the actual continuous call time is considerably shorter than the above time. Therefore, do not wait for incoming calls, perform the minimum necessary transmission / reception function, suppress battery consumption, and avoid situations where you cannot talk due to dead batteries when you want to talk. Proposals have been made.

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, when the standby function for an incoming call is completely abolished, for example, even when it is possible to receive a call back from the person in response to a message to an absentee, It is inconvenient because you have to always make phone calls yourself.

[0005]

SUMMARY OF THE INVENTION In consideration of the above-mentioned conventional problems, the present invention provides
Provide a mobile phone device that can provide a standby function for incoming calls only when necessary and thus can receive desired contact in real time, and can suppress battery drain without normally operating the standby function. The purpose is to do.

[0006]

SUMMARY OF THE INVENTION The object is to supply power to a receiving unit until a predetermined time elapses after the timer is activated, an operation switch for controlling the operation of the timer, and an operation switch for controlling the operation of the timer. It is achieved by providing a mobile telephone device comprising a control means for controlling.

[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 in this control unit 1 there is a microprocessor unit (MPU) 2. This MPU
ROM3 and RAM4 are connected to 2, and this RA
A telephone number storage area, a timer setting data storage area described later, and the like are assigned to M4. ROM3
A telephone ID code and a control program are written in.

A display unit 5 such as a liquid crystal display device is connected to the MPU 2 via a driver 6, and a key input unit 7 provided in a housing described later.
The signal output line of is connected.

A timer 8 for measuring the passage of a predetermined time is connected to the MPU 2, and the switching transistor 17 described later is controlled by the operation of the timer 8 so that a standby reception for an incoming call can be performed when necessary. I have to.

The portable telephone device is provided with a call circuit section 9, and this call circuit section 9 includes 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 is a circuit unit for transmitting / receiving a radio signal on a channel designated by the transmission / reception control unit 13 (a transmission control channel, an incoming control channel, a plurality of communication channels) and for modulating / demodulating the radio signal. Therefore, it is composed of a transmission circuit section and a reception circuit section.

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, error correction, and the like. It is composed of 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.

The sound generator 16 is provided at the output port of the MPU 2.
Is connected, and when an incoming call is made by the sounding body 16, the fact can be notified to the user. On the other hand, the plus power supply line of the communication circuit unit 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.

FIG. 2 is a perspective view showing the appearance of the portable telephone device. In the figure, a keypad 22, which constitutes a part of the key input section 7, a display unit 5, a receiving hole 23 facing the receiving speaker 14, and a transmitting microphone facing the transmitting microphone 15 are provided on one surface of a housing 21. A talk hole 24, a sound output hole 25 facing the sounding body 16, and the like are provided.

When the mode key of the keypad 22 is operated, the modes are selected one after another, and when several kinds of modes are selected, the mode is cycled to return to the first mode. Modes are a normal mode in which a ringing signal is always awaited and received, a transmission-only mode in which the standby function for an incoming call is released to make a call only, and a telephone number setting for recording a telephone number in the telephone number storage area of the RAM 4 Modes, a timer time setting / changing mode for setting or changing the time for the timer 8, a clock mode for displaying the current time, and the like.

In the normal mode, the MPU 2 sets the switching transistor 17 in a conductive state to supply power to the speech circuit section 9 and sends a reception command to the transmission / reception control section 13 to receive a ringing signal on the incoming control channel. However, in the transmission only mode, the MPU 2 sets the switching transistor 17 in the non-conducting state, and the calling signal cannot be received.

When the receive key is operated in the call-only mode, the timer 8 is activated accordingly, and the switching transistor 17 is turned on by the MPU 2 to supply power to the call circuit unit 9. At the same time, a reception command is sent to the transmission / reception control unit 13 so that the paging signal can be received on the incoming control channel.
Then, the reception of the incoming control channel continues until the timer 8 times out, and the remaining time of the timer 8 is displayed on the display 5. If there is an incoming call during this time, the call key is operated to send a response signal from the call circuit unit 9, so that the call can be made with the other party. Even if the timer 8 times out during a call, the call is not interrupted. Further, if the promised telephone call does not come in even when the remaining time of the timer 8 becomes short, the timer 8 can be restarted by extending the time for receiving the ringing signal by operating the reception key again. You can do it. When changing the time for the timer 8, the timer time setting / changing mode is selected by operating the mode key, the desired time is input by operating the ten keys, and finally the memory key is operated. By operating this memory key, the input time is fixed as the timer time, and at the same time, the mode shifts to the transmission only mode. Further, in this embodiment, the remaining time until the timer 8 times out is displayed on the display 5, but it is also possible to display the elapsed time after the timer 8 is started.

When the reception of the ringing signal on the incoming control channel is finished before the timer 8 times out, a predetermined key operation such as a clear key operation immediately after the # key operation is performed. To do. When this key operation is performed or when the timer 8 times out, the C
The PU brings the switching transistor 17 into a non-conducting state, and stops the power supply to the communication circuit section 9.

In the above embodiment, the function of the normal mode for waiting and receiving the ringing signal is provided, but without this function, there is no waiting function for incoming calls and only for sending and receiving only during a call based on outgoing call The present invention can be applied to the mobile phone device.

[0022]

As described in detail above, according to the present invention, a portable telephone having no standby function for an incoming call or capable of canceling the standby function is provided with a timer for measuring elapse of a predetermined time. Since this timer is configured to be able to energize the receiving section until the time is up after starting, it is possible to exercise the standby function for incoming calls only when necessary and to receive desired contact in real time. The battery consumption can be suppressed without normally operating the standby function, and a mobile phone device with extremely good usability can be obtained.

[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 Codes] 1 control unit 2 MPU 3 ROM 4 RAM 5 display device 6 driver 7 key input unit 8 timer 9 communication circuit unit 10 transmission / reception circuit unit 11 transmission / reception signal processing unit 12 voice signal processing unit 13 transmission / reception control unit 14 for receiving Speaker 15 Microphone for transmission 16 Sounder 17 Switching transistor 18 Power supply circuit 19 Secondary battery 20 Charge controller

Claims (4)

[Claims] 1. In a mobile phone device having no standby function for incoming calls, a timer for measuring elapse of a predetermined time, an operation switch for starting the timer, and a period until the predetermined time elapses after the timer is started. And a control means for controlling so as to supply power to the receiving unit during the period. 2. A mobile phone device capable of canceling a standby operation for an incoming call by operating a mode changeover switch, a timer for measuring elapse of a predetermined time, an operation switch for starting the timer, and a timer for the timer. A mobile phone device, comprising: a control unit that controls the power supply to the receiving unit until the predetermined time period has elapsed after activation. 3. The display device according to claim 1, further comprising display means for displaying an elapsed time after activation of the timer or a remaining time until the predetermined time has elapsed after activation of the timer. Mobile phone device. 4. A time setting / changing means for setting or changing the predetermined time is provided.
The mobile phone device according to claim 3.