KR100298884B1 - Wireless telephone having function for alarming battery low electric potential state of remote device - Google Patents

Abstract

PURPOSE: A wireless telephone having a function for alarming a battery low electric potential state of a remote device is provided to output and inform a battery low electric potential state of a remote device to a base device as a buzzer sound. CONSTITUTION: A buzzer sound output unit(21) receives the control of a control unit(22) and outputs an alarm sound informing a low electric potential state of a battery. The control unit(22) checks a potential of a battery(23). If a potential of the battery is less than a standard, the control unit(22) applies an operation control signal to the buzzer sound output unit(21) and controls for making a wireless transmitting/receiving unit(25) transmit wireless data informing a low electric potential state of a battery. The battery(23) supplies an operation power source of a remote device. A calling circuit unit(24) performs a signal process of a voice signal being inputted from a mike(27) in accordance with the control of the control unit(22) and outputs the voice signal to the wireless transmitting/receiving unit(25) and makes an analogue signal being inputted from the wireless transmitting/receiving unit(25) be outputted through a speaker(26) as an audible sound. The wireless transmitting/receiving unit(25) receives a wireless signal through an antenna in accordance with the control of the control unit(22), converts the voice signal being inputted from the calling circuit unit(24) into a wireless signal, and converts data being applied from the control unit(22) into a wireless signal and transmits the signal.

Description

A cordless telephone having a battery low potential status notification function of a remote device

Generally, the wireless telephone comprises a remote device 10 and a base device 20, as shown in FIG. The base unit 20 is connected to a public switched telephone network (PSTN) through a wired cable to input / output a voice signal through the PSTN, and further converts and transmits voice signals input / output to / from the PSTN into a wireless signal. The remote device 10 receives / transmits a radio signal transmitted / received to / from the base device 20, and maintains a standby state according to an operation control signal in the microcomputer provided in the remote device 10, Converts the radio signal into a voice signal, outputs the voice signal through a speaker, converts the voice signal input from the microphone into a radio signal, and outputs the radio signal to the base device 20.

Since the remote device 10 operates as a wireless device for unlimited use of space and is operated by a rechargeable battery power source and the base device 20 is connected to the PSTN network, the commercial power is supplied via the cable, The commercial power source is rectified and used.

However, since the remote device 10 uses the rechargeable battery, the time available for one charging is limited. In other words, when the charging power is exhausted, it can not operate. Therefore, the user should be informed of the charging before the power is consumed.

Conventionally, the microcomputer in the remote device checks the electric potential of the battery. When the electric potential of the battery drops below the reference electric potential, the buzzer signal (warning sound) is outputted to inform the user.

However, since the consumption of the battery power is increased by outputting the buzzer signal in the remote device as described above, there is a problem that the consumption of the battery power is further accelerated by continuously outputting the buzzer signal. Further, If the battery power of the remote device is exhausted when the user does not listen, the user may not be able to talk because the user does not know it.

The present invention provides a wireless telephone having a function of notifying a battery low potential state of a remote device as a technical means for solving the conventional problems as described above. The wireless telephone checks whether the potential of the battery is below a reference potential, A buzzer sound generation section for outputting a buzzer sound in accordance with an operation control signal from the control section; and a buzzer sound generation section for generating a battery low potential warning signal in accordance with a control signal from the control section Reception unit for receiving a signal transmitted from the remote device or transmitting a wireless signal to the remote device, and a wireless transmitting / receiving unit for transmitting the wireless signal transmitted from the remote device through the wireless transmitting / If a low-potential warning signal is input, a buzzer sound will be generated at regular intervals According to the control signals and for controlling the controller, the controller is characterized by outputting a buzzer sound made of an apparatus comprising a base, which continuously outputs a buzzer sound at a predetermined time interval.

FIG. 1 is a perspective view showing a schematic outline of a general wireless telephone.

FIG. 2a is a block diagram showing the internal configuration of a remote device of a wireless telephone to which the present invention is applied.

2b is a block diagram showing the internal structure of a base device of a wireless telephone to which the present invention is applied.

Description of the Related Art

10: remote device 20: base device

21, 32: buzzer sound output device 22, 31:

24, 34: communication circuit unit 25, 33: wireless transmitting /

26, 35: Speaker 27, 36: Microphone

23: Battery

FIG. 2 (a) is a block diagram showing the internal configuration of a remote device of a wireless telephone to which the present invention is applied, and includes a buzzer sound output unit 21 for outputting a warning sound (buzzer sound) (21) and a battery (23), and when an operation control signal is applied to the buzzer sound output section (21) when the voltage is lower than a reference potential, the wireless transmission / reception section (25) A battery 23 for supplying operation power of the remote device and a control unit 22 for controlling the wireless transmitting / receiving unit (not shown) to process the audio signal input from the microphone 27 under the control of the control unit 22 25 via a speaker 26 and an analog signal input from the radio transceiver 25 is outputted as an audible sound through a speaker 26 and a control circuit 22 which controls the control unit 22 to transmit a radio signal To And a wireless transmitting / receiving unit 25 that converts the voice signal input from the voice circuit unit 24 into a wireless signal and converts the data received from the control unit 22 into a wireless signal and transmits the wireless signal, A speaker 26 and a microphone 27. Fig.

FIG. 2 (b) is a block diagram of the internal structure of a base unit of a wireless telephone to which the present invention is applied. The data is input from the wireless transmitting / receiving unit 33, and the data is data indicating that the battery is low- A buzzer sound generation unit 32 for outputting a buzzer sound in accordance with a control signal from the control unit 31 and a buzzer sound generator 32 for outputting a buzzer sound in response to a control signal of the control unit 31. [ Converts the voice signal received from the PSTN into a wireless signal and transmits the voice signal through the antenna or to the voice communication circuit 34. The wireless signal received through the antenna is converted into a voice signal and transmitted to the PSTN network through a cable, A wireless transmitting / receiving unit 33 for transmitting the wireless data to the circuit unit 34 and for receiving the wireless data transmitted from the remote device to the control unit 31, The audio signal input and output terminals connected to the unit 33 and also includes a call circuit 34 and the speaker 35 and the microphone 36 is connected to a speaker 35 and a microphone 36. The

Hereinafter, the operation of the present invention will be described.

First, in FIG. 2 (a), an input / output pin of the control unit 22 is connected to the battery 23 to check the voltage of the battery 23. The battery 23 is an operating power source for the remote device, such as a rechargeable battery or a dry battery. The battery 23 is normally charged to such a degree that the remote device can be maintained in the standby state for 24 to 48 hours. The longer the call, the shorter the life span. That is, even if the remote device is in a standby state, a constant current must flow in order to receive a transmission signal from the base device, so that the voltage of the battery 23 gradually decreases with time. The control unit 22 continuously checks the voltage of the battery 23 and informs the user that the battery 23 is not in charge when the voltage of the battery 23 is lower than a reference voltage (for example, 3.0 V) And outputs a control signal.

That is, the buzzer sound output unit 21 operates by the control signal of the control unit 22 to generate a buzzer sound for a predetermined time (for example, about 10 seconds). The wireless transmission / reception unit 25 receives the transmission operation control signal through the TX control line, switches to the transmission mode, receives a code indicating that the battery is below the reference potential from the control unit 22 through the operation data line, The data is converted into a wireless signal and transmitted.

Thus, the radio signal transmitted from the remote apparatus is received by the antenna of the base apparatus and input to the radio transmission / reception unit 33. The wireless transceiver 3 demodulates the original signal by frequency-converting the input wireless signal, and the demodulated data is input to the controller 31. The control unit 31 analyzes the data input from the wireless transceiver unit 33 and controls each device to warn the user of the battery low potential. Accordingly, the buzzer sound generator 32 outputs buzzer signals at predetermined time intervals, for example, at intervals of one minute, until the user hears and confirms the buzzer sound, that is, until a predetermined confirmation signal is input from the user.

Thereby, when the base apparatus is in the living room, when the remote apparatus is in another place (kitchen or other room), and when the user is in the living room, the battery of the remote apparatus outputs the buzzer sound to the base apparatus , So that the user can know.

When there is no one in the room, the battery of the remote device outputs a buzzer sound at intervals of a predetermined time interval, for example, at intervals of one minute in the base device, so that the battery device consumes battery power And when the remote device is not operated while the battery of the remote device is exhausted and the user does not know it, the base device operates by receiving the commercial power. Therefore, A buzzer sound may be generated.

Here, the remote device sends out a signal indicating that the battery is in the low-power state only once, and maintains the standby state so as to reduce the battery consumption as much as possible.

As described above, according to the present invention, since the battery low potential warning of the remote device is made not only in the remote device but also in the base device, the user can easily know the battery low potential state. The battery consumption of the remote device can be minimized, and the battery low potential warning signal can be continuously generated without time limitation, thereby providing the user with convenience.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wireless telephone including a remote device free from movement and a base device wired to a PSTN network, And an object of the present invention is to provide a wireless telephone having a notification function.

Claims (1)

A controller for checking whether the battery potential is lower than or equal to a reference potential and controlling the battery low potential warning signal to be sent when the battery potential is lower than a reference potential; And a wireless transmitting and receiving unit for converting a battery low potential warning signal into a wireless signal and transmitting the wireless signal in accordance with a control signal from the control unit, Receiving unit for receiving a signal transmitted from a remote device through the wireless transmitting / receiving unit, and for transmitting a wireless signal to a remote device; and a control unit for controlling the buzzer sound to be generated at predetermined time intervals when a battery low- And a control unit for controlling the control unit, A radio telephone comprising a battery low potential state notification of the remote device characterized by a base made of an buzzer sound output device comprising a continuously to output a sound.