JPH03196746A - Radio telephone set - Google Patents

Abstract

PURPOSE:To reduce power consumption in the standby state by supplying power to all circuits from a battery built in a master set when a line is connected in the occurrence of power failure and supplying power only to a required circuit at the detection of an incoming call when the line is disconnected. CONSTITUTION:When power failure takes place in a commercial AC power supply, it is detected by a power failure detection circuit 21 in a master set 1. In this case, when a radio telephone set 2 is connected to a wired line 3, a control circuit 12 controls a changeover circuit 15 to supply power from a battery 19 to all the master set 1. On the other hand, when the wired line 3 is not in use in the occurrence of power failure, the changeover circuit 15 is not active and the battery 19 is connected only to the control circuit 12 and an incoming call detection circuit 14. As a result, the wear of the battery 19 in the standby state is suppressed to be slight.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an improvement in a wireless telephone device having a power failure backup function.

(Prior Art) Conventionally, a parent device in this type of wireless telephone device has been configured to operate on commercial power. For this reason, when a power outage occurs, it is sometimes impossible to make or receive calls.

Therefore, in order to solve this problem, it has been proposed that the parent device also has a built-in rechargeable battery, and the parent device is operated by this rechargeable battery during a power outage.

However, with such wireless telephone devices equipped with a built-in battery, the receiver is sometimes turned off during standby, so if the power outage continues for a long time, the battery will run out even if it is not in use. There was a problem with it not working.

(Problems to be Solved by the Invention) As mentioned above, in the above device, all the circuits are backed up by the built-in battery during power outages, so the battery consumption is rapid, and if there is a long power outage, the device may not be used. There was a problem that the battery ran out.

This invention was made in view of the above problems,
The first objective is to provide a wireless telephone device that can reduce battery consumption even during power outages when the device is not in use.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object [1], the present invention provides a parent device connected to a wired line, and a wireless telephone connected to the parent device via a wireless line. (11) The parent device has a power outage in the external power supply, and in a wireless telephone device that is operated by a built-in battery when it is in the mold, a power outage occurs in the external power supply in the parent device. means for detecting, if the line is connected at the time when the power outage is detected, power is supplied from the built-in battery of the parent device to all circuits in the parent device, and if the line is disconnected; , a means for supplying power from the internal battery of the parent device only to circuit parts necessary for detecting an incoming call, and a circuit part necessary for detecting an incoming call when an incoming call is detected while power is being supplied from the internal battery of the main unit; A means for switching from a power supply state only to a power supply state to a power supply state for all circuits.

(Function) According to such a configuration, if the line is connected at the time when the occurrence of a power outage is detected, power is supplied from the built-in battery of the parent device to all the circuits in the parent device.

Therefore, calls will not be cut off due to a power outage while the line is connected.

On the other hand, if the line is disconnected at the time when a power outage is detected, power is supplied from the built-in battery of the parent device only to the circuit portion (for example, the control circuit portion) necessary for incoming call detection.

Therefore, power consumption during standby can be significantly reduced compared to conventional devices.

On the other hand, if an incoming call is detected while power is being supplied from the built-in battery of the parent device, the state is switched from the state in which power is supplied only to the circuit portions necessary for incoming call detection to the state in which power is supplied to all circuits.

Therefore, after a call is detected, normal line connection operations can be performed.

(Embodiment) FIG. 1 is a block diagram showing the overall configuration of a wireless telephone device according to the present invention.

As shown in the figure, the parent device 1 is connected to a wireless telephone 2 via a wireless line, and is also connected to a wired line 3.

The father FM1 has a hybrid circuit 4. Transmitter 5° transmitting antenna 6, receiving antenna 7, receiver 8. synthesizer 9
．． Received electric field detection circuit 10. Identification signal detection circuit 11.1i
Control circuit 12. Line switch 13, scratch detection circuit 14
．． Switching circuit 15. Current limiting resistor 16. Rectification stabilization circuit 1
7. AC plug 18° Rechargeable battery 19. Charging terminal 20.
The power failure detection circuit 21 is set to H.

On the other hand, the wireless telephone 2 has a control circuit 22. Sounder 23.
Receiver 24. Received electric field detection circuit 25. Handset 26. Transmitter 27. Transmitter 28. 2 transmitting antennas, 1 synthesizer, O1 receiving antenna 31°, rechargeable battery 32. Charging end f33. The identification signal detection circuit 34 is (4).

The basic configuration of this wireless telephone device is briefly explained as follows.

For example, when the line switch 13 is turned on, the signal transmitted from the wired line 3 is transmitted to the line switch 1
3 and the hybrid circuit 4, the modulated output of the transmitter 5 is transmitted to the radio telephone 2 from the transmitting antenna 6.

On the other hand, the radio waves transmitted from the radio telephone 2 are received by the receiving antenna 7, and the receiving power is demodulated by the receiver 8. The demodulated signal is sent to the wired line 3 via the hybrid circuit 4 and line switch 13.

Synthesizer 9 outputs a carrier wave signal of a frequency corresponding to a wireless channel to transmitter 5 and receiver 8 .

-Jj, the radio telephone 2 similarly has a receiving antenna 31 and a receiver 24, and the demodulated output is output to the receiver 26.

Further, the audio signal from the transmitter 27 is modulated by the transmitter 28, and radio waves are transmitted from the transmitting antenna 30.

Further, the speaker 23 is a sounder that emits a ringing sound when a call arrives.

Next, the operation of the wireless telephone device having the following two configurations during a power outage will be explained.

For example, when a power outage occurs in the commercial AC power supply, the power outage detection circuit 21 in the parent device 1 detects this fact.

At this time, if the wireless telephone 2 is connected to the wired line 3, the control circuit 12 controls the switching circuit 15 so that power is supplied from the rechargeable battery 19 to the entire housing (11:).

On the other hand, if the wired line 3 is not in use when a power outage occurs, the switching circuit 15 will not operate, and one rechargeable battery will be connected only to the control circuit 12 and the incoming call detection circuit 14. For this reason, the standby is when the rechargeable battery is 1
The consumption of 9 can be kept to a very small amount. Note that there is a type of incoming call detection circuit 14 that can detect a calling signal from the wired line 3 and notify the control circuit 12 of an incoming call even if power is not supplied to the circuit 11, and when this type of incoming call detection circuit is used. is the power from the rechargeable battery 19 to the incoming call detection circuit 14 (j
(There is no need to pay.

Here, when there is an incoming call from the wired line 3, the incoming call detection circuit 1
The control circuit 12 controls the switching circuit 15 to generate an output to the transmitter 5.4. Synthesizer 9, receiver 8. Reception 7
u-field detection circuit 10. Charge to identification signal detection circuit 11? Power is supplied from the Li battery 19.

Thereafter, the same call receiving operation as when the power is turned on is started, a wireless line is established between the wireless telephone 2 and the wireless telephone 2, and the wireless telephone 2 is called.

At this point, if there is a response from the wireless telephone 2, the father 1 turns on the line switch 13 to connect the wireless telephone 2 and the wired line 3 via the wireless line, making it possible to talk.

In addition, since it is not possible to make a call in this state, in this embodiment, a switch 35 is provided in the parent device 1, and by operating this switch, the entire parent device is supplied with power from one rechargeable battery. , the transmission operation is 11 functions.

〔Effect of the invention〕

As explained above, according to the present invention, during a power outage, power is supplied only to the circuit parts necessary for incoming call detection (for example, the control circuit), so the current consumption during standby is significantly reduced. The life of the Ia battery can be extended.

-l, JI for all circuits when detecting arrival f3
Since the fI electric current is generated, the harmonic 1 of
You can make one call per movement without compromising operability.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a wireless telephone device according to the present invention. 11. - Parent device, 2... Wireless telephone, 3... Wired line, 4... Hybrid circuit, 5... Transmitter, 6...
...Transmission antenna, 7..Reception antenna, 8..Receiver, 9..Synthesizer, 10..Reception electric field detection circuit, 11..Identification signal detection circuit, 12..Control circuit, 13. ...Line switch, 14...Incoming call detection circuit, 15...Switching circuit, 16...Limiting resistor, 17...
・Rectifier stabilization circuit, 18... AC outlet, 1 ・
... Rechargeable battery, 20... Charging terminal r121... Power failure detection circuit, 22... Control circuit, 23... Naunder,
24...Reception circuit, 25...Reception electric field detection circuit, 2
6...Telephone receiver, 27...Microphone, 28...Transmitter, two...Transmission antennas, 30...Synthesizer,
31... Receiving antenna, 32... Rechargeable battery, 33
...Charging terminal r, 34...Output signal detection circuit.

Claims (1)

[Scope of Claims] The main device includes a parent device connected to a wired line and a wireless telephone connected to the parent device via a wireless line, and the parent device does not operate during an external power outage. In a wireless telephone device operated by a built-in battery, the main unit includes a means for detecting a power outage in an external power source, and a means for detecting a power outage in the external power supply, and a means for detecting a power outage when the power outage is detected. supplies power from the built-in battery of the parent device to all circuits in the parent device, while when the line is disconnected, supplies power from the built-in battery of the parent device only to the circuit portions necessary for incoming call detection. and means for switching from a power supply state to only a circuit portion necessary for incoming call detection to a power supply state to all circuits when an incoming call is detected while power is being supplied from the built-in battery of the parent device. A wireless telephone device with features.