KR20000043934A - Apparatus and method for charging a battery of a radio telephone - Google Patents

Abstract

PURPOSE: An apparatus and a method for charging a battery of a radio telephone are provided to charge a battery of a radio telephone when the radio telephone is used. CONSTITUTION: A low voltage detecting section(22) detects an operation power source(Vcc) which is supplied from a power source supplying section(21) according to the control signals of a microprocessor(17). The microprocessor(17) determines whether the electric power source(Vcc) which is outputted from the low voltage detecting section(22) is smaller than a minimum operation power source.

Description

Method for charging battery during call of wireless telephone and device

The present invention relates to a wireless telephone, and in particular, during the call or standby state detects the battery charge level and outputs a warning sound when a predetermined amount or less, and when the external power is connected to the battery throughout the device by supplying the battery charging voltage and operating power to the device The present invention relates to a method for charging a battery during a call of a wireless telephone and a device for charging the same.

Nowadays, in a widely used telephone, a wired telephone in which a handset is wired to a telephone body is commonly used.

In addition, for the convenience of users, a portable wireless handset is additionally provided in the function of the wired telephone, and a wired / wireless combined telephone for transmitting and receiving voice signals and various signals, for example, a 900 MHz wireless signal, and the wired / wireless combined telephone are expensive. In consideration of the fact that the main functions of wired / wireless combined telephones, that is, a low-cost single radio telephone without the handset function and the dialing function, have been widely used.

On the other hand, in the single radiotelephone consists of a main body and a wireless handset equipped with a charging stand, when the call request from the other party, the main body of the phone signal or the voice signal of the other party RF signal processor ( (Not shown) to modulate and amplify and transmit a predetermined wireless signal, and the wireless handset receives the amplified and demodulated signal through an RF signal processing unit (not shown) and converts the voice signal into an original signal. Will be provided to

In addition, the wireless handset is supplied with operating power through a removable battery and when the user uses the wireless handset for a predetermined time, the battery is discharged to a predetermined amount or less, and thus the wireless handset cannot be used.

The wireless handset notifies the user of the battery replacement time by outputting a predetermined warning sound when the battery is discharged below a predetermined amount. Therefore, the user can check the battery replacement timing through a predetermined warning sound output from the wireless handset and replace the discharged battery with another charged battery.

However, when the user does not check a predetermined alarm sound outputted by discharging the battery from the wireless handset by a predetermined amount or less, that is, when the remote handset is away from the wireless handset or when it is not confirmed due to ambient noise, the battery combined with the wireless handset. Continues to discharge and the wireless handset is no longer available.

Therefore, when the user attempts to make a phone call in a urgent state while the battery coupled to the wireless handset is discharged, the battery is replaced with another charged battery. When there is no other battery charged, the battery coupled to the wireless handset. After charging for a certain time, there was an inconvenience to be able to use the wireless handset.

Accordingly, the present invention has been made in view of the above circumstances, and when a warning sound is output from the wireless handset during a call or in a call waiting state, the wireless power can be connected to an external power source and continue to charge the battery. It is an object of the present invention to provide a method and a device for charging a battery during a call.

1 is a block diagram schematically illustrating an internal configuration of a radiotelephone according to an embodiment of the present invention.

Figure 2 is an external perspective view showing a coupling relationship between a wireless telephone and a power supply device according to the present invention.

FIG. 3 is a flowchart for explaining the operation of the apparatus shown in FIG. 1; FIG.

*** Explanation of symbols for main parts of drawing ***

10: cordless phone, 11: antenna,

12: RF signal processing unit, 13: voice processing unit,

14: speaker, 15: microphone,

16: keypad, 17: microprocessor,

18: external power connection, 19: battery,

20: charge voltage cut off switch, 21: power supply,

22: low voltage detector, 50: external power supply,

51: power plug, 52: power connection jack.

Battery charging method of a wireless telephone in accordance with the present invention for realizing the above object is an external power supply means for outputting a constant voltage through the power supply jack, a battery for charging and charging, external power connection means coupled to the external Power supply means for converting the external power input from the power connection means and the charging voltage output from the battery to the operating power, the switching means for turning on / off the charging voltage of the battery, and controls the entire device with a predetermined minimum operating power In a radio telephone having a control means for; A low voltage detecting step of detecting a level of the operating power output from the power supply means; and comparing the detected operating power with a predetermined minimum operating power, if the minimum operating power is greater than the detected operating power, the low voltage detecting step is performed. Re-executing step, the external power coupling determination step of determining whether the power connection jack is coupled to the external power connection means when the minimum operating power is small; when the power connection jack is coupled as a result of the determination, the switching means is controlled to turn off the battery charging voltage. Blocking and charging the battery based on the external power input from the external power connection unit, the external power supply control step of supplying external power to the power supply means, and operating the supplied external power through the power supply means It includes a dynamic power supply step of converting the power to supply the entire device Characterized in that configured.

In addition, in the low voltage comparison step, the control means outputs an alarm when it is smaller than the detected operating power and a predetermined minimum operating power, and when the power supply jack is coupled to the external power connection means in the external power supply control step. Turning off the switching means, it is characterized in that the switching means on when the power supply jack is disconnected.

On the other hand, the battery charging device during a call of the wireless telephone according to the present invention for realizing the above object is a battery that is charged based on the external power connection means for coupling external power, and the external power input through the external power connection means; Charge voltage switching means for switching on / off the charging voltage output from the battery according to a predetermined control signal, and receives the external power input from the external power connection means and the charging voltage output from the battery to convert the operating power into output Coupling of a power connection jack to the external power connection means if the power supply means for detecting the power supply means is low voltage detecting means for detecting an operating power level output from the power supply means, and the operating power detected from the low voltage detection means is smaller than the minimum operating power. If it is determined that the power connection jack is coupled, the charging It is characterized in that it comprises a control means for turning off the voltage switching means to charge the battery through the external power input from the external power connection means, and converting into the operating power through the power supply means to control the supply to the entire apparatus.

The control means outputs an alarm when the operating power detected from the low voltage detecting means is smaller than the predetermined minimum operating power, and turns off the switching means when the power supply jack is coupled to the external power connection means. When the power supply jack is disconnected, the switching means are turned on.

That is, according to the present invention having the above-described configuration, when the operating power detected by the low voltage detecting means is smaller than the minimum operating power, the control means outputs a warning sound and supplies power to the external power connection means. It is determined whether the connection jack is connected, and when it is determined that the power connection jack is connected, the switching means is turned off.

In addition, the control means charges the battery through the external power supplied from the power connection jack connected to the external power connection means, and converts into the operation power through the power supply means to supply the operating power to the overall device.

Therefore, the user can continue the telephone call by combining the power connection jack for supplying external power to the external power connection means of the wireless handset when the warning sound according to the battery discharge is output during the call or during the call waiting.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention.

1 is a block diagram schematically showing the internal configuration of a wireless telephone with a battery charging function during a call according to an embodiment of the present invention, Figure 2 is a coupling relationship between a wireless telephone and a power supply device according to the present invention It is a perspective view shown.

In FIG. 1, reference numeral 10 denotes a wireless handset for performing a voice call function, 11 denotes an antenna for wirelessly transmitting and receiving various signals to and from a telephone body (not shown) connected to a trunk line, and 12 denotes an antenna 11 RF signal processing unit for demodulating and amplifying various signals received through the modulation and amplifying and outputting various signals generated by the wireless handset 10, 13 is a digital voice signal demodulated through the RF signal processing unit 12 A voice processing unit which decodes and converts an analog voice signal into an analog voice signal and codes and outputs an analog voice signal output from the microphone 15 to be described later into a digital voice signal.

In addition, reference numeral 14 is a speaker for converting and outputting the analog voice signal output from the voice processing unit 13 to an audible sound, 15 is a microphone for converting and outputting the user's voice signal into an electrical signal, 16 is for dialing A keypad equipped with a number key and a function key, 17, is a microprocessor that controls the whole device. When the operating power supply Vcc falls below a predetermined level through the low voltage detector 22 to be described later, a predetermined warning sound is output. In addition, the power connection jack 52 shown in FIG. 2 is coupled to the external power connection unit 18, and when the external power is input, the switching means is turned off to cut off the battery charging voltage output from the battery 19 and the power connection jack. The external power input from the 52 is converted to the operating power Vcc through the power supply 21 to be controlled to be output.

In addition, reference numeral 18 is an external power connection unit coupled to the power connection jack 52 of the external power supply unit 50 shown in FIG. Here, as shown in FIG. 2, when the AC power source AC is input from the power plug 51, the external power supply unit 50 operates the power source of the wireless handset 10 through a constant voltage circuit unit (not shown). A constant voltage corresponding to Vcc) is generated and outputs a predetermined constant voltage to the external power connection unit 18 of the wireless handset 10 connected through the power connection jack 52.

In addition, reference numeral 19 is charged based on a predetermined constant voltage input from the power connection jack 52, the battery for outputting the charging voltage, 20 is the battery 19 in accordance with the control signal of the microprocessor 17 The switching unit for switching on / off the charging voltage output from the.

The reference numeral 21 is a power supply unit for converting the charging voltage of the battery 21 and the external power (constant voltage) input through the external power connection unit 18 into a stable operating power (Vcc) to supply the entire apparatus, 22 is a low voltage detection unit that detects that the operating power supply Vcc supplied from the power supply unit 22 falls below the minimum operating power supply and outputs a predetermined detection signal.

Next, the operation of the apparatus having the above-described configuration will be described with reference to the flowchart shown in FIG.

First, the low voltage detection unit 22 detects the operating power Vcc supplied from the power supply unit 21 at a predetermined time, for example, "one minute", based on the control signal of the microprocessor 17, and detects the detected operating power. A detection signal corresponding to (Vcc) is output (ST11), and the microprocessor 17 causes the detected operating power supply Vcc output from the low voltage detection unit 22 to be smaller than the previously stored minimum operating power supply, for example, "3V". When the operation power Vcc detected as a result of the comparison is greater than the minimum operation power, the operation ST11 is performed again to detect the operation power Vcc supplied from the power supply 21.

In addition, when the detected operating power supply Vcc is equal to or smaller than the previously stored minimum operating power in step ST12, the operation power Vcc of the detection signal output from the low voltage detector 22 is compared with the previously stored minimum operating power. In addition, the microprocessor 17 outputs a predetermined warning sound through the speaker 14, for example, "twice" (ST13), and whether the power connection jack 52 for supplying external power to the external power connection unit 18 is coupled. (ST14), and if it is determined that the power connection jack 52 is not coupled, step ST11 of detecting the operating power Vcc supplied from the power supply 21 is performed again.

Then, in the step ST14 of determining whether the power connection jack 52 for supplying external power to the external power connection unit 18 is coupled, if it is determined that the power connection jack 52 is coupled, the microprocessor 17 is predetermined. The warning sound output function is released (ST15), and the switching unit 20 is turned off at the same time to cut off the battery charging voltage output from the battery 19 (ST16), the external input through the external power connection unit 18 In addition to charging the battery 19 based on the power (constant voltage), the external power is converted into a constant operating power Vcc through the power supply 21 to be supplied to the entire apparatus (ST17).

Thereafter, the microprocessor 17 determines whether the power connection jack 52 is connected to the external power connection unit 18 (ST18), and releases a predetermined warning sound output function when the power connection jack 52 is connected as a result of the determination. When the power supply jack 52 is not connected as a result of the determination, the step ST15 is performed again. Then, the switching unit 20 is turned on and the battery charging voltage output from the battery 19 is supplied through the power supply unit 21. It converts into stable operating power supply Vcc and supplies it to the whole apparatus (ST19).

That is, according to the embodiment, when the operating power (Vcc) detected through the low voltage detecting unit 22 is smaller than the predetermined minimum operating power, the microprocessor 17 outputs a predetermined warning sound and the external power connection unit. It is determined whether the power connection jack 52 for supplying external power to the 18 is coupled, and when it is determined that the power connection jack 52 is coupled, the charging voltage switch unit 20 is turned off.

In addition, the microprocessor 17 charges the battery 19 based on the external power input from the power connection jack 52 connected to the external power connection unit 18, and provides a stable operating power through the power supply unit 21. Vcc) will be supplied to the overall market.

Therefore, when a user hears a warning sound due to battery discharge even during a call waiting or during a call, the user combines a power connection jack 52 for supplying external power to the external power connector 18 of the wireless handset 10 to continue a telephone call. You can do it.

In addition, this invention is not limited to the said Example, It can variously deform and implement within the range which does not deviate from the technical summary of this invention.

As described above, according to the present invention, when a user combines an external power supply with a wireless handset during a call, the method and apparatus for charging a battery during a call of a wireless telephone can be realized so that the battery can be charged and the voice call can be continued. do.

Claims (6)

External power means for outputting a constant voltage through the power supply jack, battery for charging and discharging, external power connection means coupled to the power supply jack, external power input from the external power connection means and the charging voltage output from the battery as the operating power source A radiotelephone comprising: a power supply means for converting and outputting; a switching means for turning on / off a charging voltage of a battery; and a control means for controlling the entire apparatus with a predetermined minimum operating power; A low voltage detecting step of detecting a level of operating power output from said power supply means; When the minimum operating power is greater than the detected operating power by comparing the detected operating power with a predetermined minimum operating power, the low voltage detection step is performed again. When the minimum operating power is small, a power connection jack is connected to the external power connection means. External power coupling determination step of determining whether the If the power connection jack is coupled as a result of the determination, the switching means cuts off the battery charging voltage, charges the battery based on the external power input from the external power connection part, and supplies the external power to the power supply means. An external power supply control step of supplying, And a dynamic power supply step of converting the supplied external power into operation power through a power supply means and supplying it to the entire apparatus. The method of claim 1, In the low voltage comparison step, the control means outputs an alarm sound when the detected operating power is less than the predetermined minimum operating power. The method of claim 1, And in the external power supply control step, when the power supply jack is coupled to the external power supply connecting means, the switching means is turned off, and when the power supply jack is disconnected, the switching means is turned on. External power connection means for coupling external power, Battery charged based on the external power input through the external power connection means, Charging voltage switching means for switching on / off the charging voltage output from the battery according to a predetermined control signal; A power supply means for receiving an external power input from the external power connection means and a charging voltage output from a battery and converting the same into operating power; Low voltage detecting means for detecting an operating power level output from said power supply means; If the operating power detected from the low voltage detecting means is smaller than the minimum operating power, it is determined whether the power connection jack is coupled to the external power connection means. If the power connection jack is coupled, the charging voltage switching means is turned off to connect the external power supply. And a control means for charging the battery through an external power input from the means, and converting the battery into operating power through a power supply means and controlling the supply to the entire apparatus. The method of claim 4, wherein And the control means outputs an alarm sound when the operating power detected from the low voltage detecting means is smaller than a predetermined minimum operating power. The method of claim 4, wherein And the control means turns off the switching means when the power supply jack is coupled to an external power connection means, and turns on the switching means when the power supply jack is disconnected.