JPH0697866A - Radio telephone equipment - Google Patents

Abstract

PURPOSE:To reduce the power consumption during wait and to extend the usable time regardless of the battery non-charging state of long duration by changing the intervals of operation of a radio circuit by detection output at the time of detecting the non-charging state of the battery. CONSTITUTION:During wait, a radio telephone set 3 monitors the radio wave of a control channel by a radio circuit 11 and does not always set the radio circuit 11 to the operating state but controls this circuit to the intermittent reception state. That is, when the radio telephone set 3 is placed on a charger 26 and is set to the charging state, a timer circuit 15 is connected to a control circuit 12, and the radio circuit 11 is controlled to such intermittent reception state by the control circuit 12 that it is not operated for a short time. In the case of the non-charging state, a counting circuit 18 is set to the counting-down state due to the discharging current, and a timer circuit 16 is connected to the control circuit 12. The radio circuit 11 is controlled to such intermittent reception state by the control circuit 12 that it is not operated for a long time. Consequently, the power consumption during wait is lower than that in the former case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless telephone device,
In particular, the present invention relates to a wireless telephone that can be used for a long time even when the battery is not charged.

[0002]

2. Description of the Related Art As a radio telephone device, for example, a connection device connected to a telephone subscriber line and one or a plurality of radio telephones connected to the connection device via a radio line are provided. A built-in rechargeable battery for wireless communication, that is, the wireless telephone can be placed on the charger when not in a call, that is, in standby, and the battery for the power source is always charged and always available for use. It has been known. Since the wireless telephone in such a wireless telephone device can be freely moved and used,
There may be a non-charged state even during non-call. In addition, this type of wireless telephone has been devised to reduce power consumption not only during a call but also during standby, thereby achieving a smaller size and a lighter weight. For example, in a standby state of receiving a control signal transmitted from the connection device to the control channel (information such as a transition to the call channel due to an incoming call), the wireless circuit of the wireless telephone is controlled to operate intermittently (intermittent reception). is doing. The operation and non-operation time of the wireless circuit are set to a constant value so that the information transmission from the connection device is not hindered (for example, repetition in several hundred milliseconds). However, as described above, since the wireless telephone may be used at a position away from the charger, the state where the wireless telephone is not placed on the charger may continue for a long time even during a non-call, that is, during standby.

[0003]

[Problems to be Solved by the Invention]
Since the inactive time of the intermittent reception during the standby described above is constant, the power consumption at that time is constant regardless of the remaining capacity of the rechargeable battery. However, in the uncharged state,
Battery consumption is not so low even during standby. Therefore, the time when the wireless telephone can be used in a place away from the charger is limited to a short time. In view of this point, the present invention intends to extend the usable time by minimizing the power consumption during standby in the uncharged state.

[0004]

In order to achieve the above object, the present invention comprises a connection device connected to a telephone subscriber line,
The wireless telephone includes one or a plurality of wireless telephones connected to the connecting device via a wireless line, and the wireless telephone sends a battery state detecting means for detecting the state of a rechargeable battery for power supply, and the wireless device transmits the battery state detecting means. A control means is provided for controlling the operation time interval of the radio circuit that receives the radio wave by the control channel, and the control means is such that the operation time interval is changed by the detection output of the battery state detection means. is there.

[0005]

[Operation] In the present invention, the operating time interval of the wireless circuit is changed by the detection output when the state of the battery, for example, the non-charged state is detected, so that the consumption during standby depending on the state of the battery The power can be reduced.

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 is an overall configuration diagram of a wireless telephone device according to the present invention. The wireless telephone device of this embodiment includes a connection device 2 connected to a telephone subscriber line 1 and one or a plurality of wireless telephones (3, 4, 5) connected to the connection device 2 via a wireless line 6. It consists of and. Wireless telephone (3
4, 5) each have the same configuration, and as shown in FIG. 1, the wireless telephone 3 includes a wireless circuit 11, a control circuit 12,
Call circuit 13, switching circuit 14, timer circuits 15 and 1
6, rechargeable battery 17, counter circuit 18, transmitter 19,
And a handset 20. Further, the charger 26 is connected to the power supply device 22, and includes a contact 24 for supplying current to charge the rechargeable battery 17 of the wireless telephone 3 and a charging current control circuit 23. The contact point 25 of the wireless telephone 3 is a contact point that contacts the contact point 24 of the charger 26. When the wireless telephone 3 is placed on the charger 26 when not in a call, the contact point 25 contacts the rechargeable battery 17. Next, the operation of the wireless telephone 3 will be described. While in standby, the wireless telephone 3 monitors the transmission of radio waves from the connection device 2 through the control channel (reception of radio waves of the channel by the radio circuit 11), but the radio circuit 11 is not always activated. As described above, the intermittent reception state is controlled. Therefore, the control circuit 12 controls the operation and non-operation of the radio circuit 11, but the time interval of the non-operation (the operation time is constant, for example, 0.2 seconds) is the timer circuit 15. And 16 are connected to the control circuit 12. For example, the timer circuit 15 is controlled for 0.3 seconds, and the timer circuit 16 is controlled for a dead time of 1 second, and the control circuit 12 is controlled via the switching circuit 14.
Is configured to be connected to. In addition, the switching circuit 1
4 is driven by the output of the counting circuit 18. The counting circuit 18 counts the charging / discharging current value of the rechargeable battery by the counting means, and outputs the remaining capacity of the charging battery 17 or the respective count states of counting up by the charging current and counting down by the discharging current according to the counted value. For example, the switching circuit 14 connects the timer circuit 16 to the control circuit 12 in the output of the count-up state, and the switching circuit 14 connects the timer circuit 15 to the control circuit 12 in the output of the count-down state. It is configured. Therefore, while waiting,
When the wireless telephone 3 is placed on the charger 26 and is in the charging state, the timer circuit 15 is connected to the control circuit 12, so that the wireless circuit 11 is brought into the intermittent reception state by the control circuit 12 for a short down time. If controlled and uncharged,
Since the count circuit 18 is in the countdown state due to the discharge current, the timer circuit 16 is connected to the control circuit 12, so that the radio circuit 11 is controlled by the control circuit 12 to be in an intermittent state for a long time. The power consumption during standby is reduced compared to the former. The wireless circuit 11
When the control signal from the connection device 2 is sent to the control circuit 12 by receiving the radio wave of the control channel described above, the control circuit 12 controls the wireless circuit 11 to the receiving state of the communication channel and receives the calling signal, for example. When the original call display or the response operation to the call display is performed, the control circuit 12 causes the call circuit 1
3 is controlled, and the transmitter 19 and the receiver 20 communicate with the other subscriber connected to the telephone subscriber line 1, which is the same as in the conventional case, and a detailed description thereof will be omitted. Although the switching circuit 14 is driven in the counting state of the counting circuit 18 in the above description, the remaining capacity of the rechargeable battery 17, that is,
It may be driven by the count value. In this case, if the remaining capacity does not fall below a certain value, the non-operating time interval of the wireless circuit 11 does not immediately become long even in the non-charged state. Therefore, while the remaining capacity of the rechargeable battery 17 is large, the control signal or the like is received. Will never be delayed. The battery state detecting means is not limited to the example described above, and may be the one described in Japanese Patent Laid-Open No. 2-109449 proposed by the applicant.

[0006]

As described above, according to the present invention, the power consumption of the wireless telephone in standby can be reduced according to the state of the rechargeable battery. The usable time can be extended.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a wireless telephone and a charger according to the present invention.

FIG. 2 is an overall configuration diagram of a wireless telephone device according to the present invention.

[Explanation of symbols]

 1 telephone subscriber line 2 connection device 3, 4, 5 wireless telephone 11 wireless circuit 12 control circuit 13 communication circuit 14 switching circuit 15, 16 timer circuit 17 rechargeable battery 18 counter circuit 19 transmitter 20 handset 22 power supply device 23 charging Current control circuit 24, 25 contacts 26 charger

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshiaki Kobayashi 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (3)

[Claims] 1. A connection device connected to a telephone subscriber line,
The wireless telephone includes one or a plurality of wireless telephones connected to the connecting device via a wireless line, and the wireless telephone sends a battery state detecting means for detecting the state of a rechargeable battery for power supply, and the wireless device transmits the battery state detecting means. Control means for controlling the operation time interval of the radio circuit for receiving the radio wave by the control channel, and the control means is configured such that the operation time interval is changed by the detection output of the battery state detection means. Wireless telephone device characterized by 2. The wireless telephone device according to claim 1, wherein the battery state detecting means is means for detecting the remaining capacity of the battery. 3. The wireless telephone device according to claim 1, wherein the battery state detecting means is means for detecting charging and discharging of the battery.