KR200165535Y1 - Radio telephone reducing power consumption - Google Patents

Abstract

The present invention relates to a wireless telephone having a power saving function to save power consumption of the wireless telephone by blocking the operation of the RF transceiver, which consumes a large amount of current, during bedtime when the wireless telephone is not used. A radiotelephone having a low noise amplification and demodulation which is amplified or received, and whose operation is stopped or driven in accordance with a predetermined control signal. And illuminance detecting means for outputting a detection signal having a predetermined level, and control means for stopping or driving the operation of the RF transmitting / receiving means based on the level signal inputted from the illuminance detecting means.

In addition, the present invention further comprises a key input means having a plurality of numeric keys and function keys, wherein the control means is any key input from the key input means in the state that the operation of the RF transmission and reception means is stopped If so, characterized in that the drive control the RF transmission and reception means for a predetermined time.

Description

Cordless phone with power saving

The present invention relates to a wireless telephone, and more particularly to a wireless telephone having a power saving function that can save the power consumption of the wireless telephone by minimizing the power consumption of the portable device during bedtime without using the telephone.

In recent years, as the functions of telephones have been advanced, wireless telephones have been commercialized and widely distributed so that users can conduct calls even at a certain distance from the main body of the telephone by wirelessizing a portion corresponding to a conventional handset. It is.

The wireless telephone is composed of a telephone line, i.e., a main body electrically coupled to a trunk line, and a portable device providing a call function to a user by transmitting and receiving a predetermined frequency signal (RF signal) to the main body.

Here, since the portable device is wirelessized with respect to the main body, a predetermined operating power is supplied from a battery provided therein. The battery is charged by a predetermined operating power applied from the main body when the user mounts the portable device at a predetermined position of the main body.

Therefore, when the portable device is left in a state where the portable device is separated from the main body for a predetermined time or more, the battery power is continuously consumed for transmitting and receiving the RF signal between the portable device and the main body, and thus the portable device cannot be used due to the discharge of the battery. The problem arises.

On the other hand, recently, in a non-call state (on-hook state) in which the user does not use the portable device, the RF receiver is set to non-driven state and the RF receiver is periodically turned on and off, thereby providing a portable device. The wireless telephone has been introduced to extend the usage time of the portable device with the main body separated.

However, in the wireless telephone, driving control of the RF transceiver is non-selective, and thus, the RF receiver is periodically driven even at night when the user rarely uses the portable device. Since it requires a lot, unnecessary power consumption occurs.

Therefore, if the user leaves the portable device away from the main unit for a long time due to bedtime while the user is sleeping on the bed, the battery of the portable device is discharged. There is a problem that the portable device can not be used at a time when it is likely to use.

In addition, in the case of a battery for charging and discharging generally used in portable devices, if the charging power is consumed over a certain value, the charging function may be abnormal and the battery may not be used again. This results in shortening the life of the device.

Accordingly, the present invention is conceived in view of the above circumstances, the power saving function that can reduce the power consumption of the portable device and provide its operational stability by stopping the operation of the RF transceiver at night time when the portable device is not used. Its purpose is to provide a wireless telephone having a.

1 is a block diagram showing an internal configuration of a portable apparatus A of a wireless telephone having a power saving function according to an embodiment of the present invention.

Figure 2 is a perspective view showing the appearance of the wireless telephone having a power saving function according to an embodiment of the present invention.

3 is an operation flowchart for explaining the operation of the apparatus according to the present invention.

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

1: antenna, 2: RF (Radio Frequency) transmitter and receiver,

3: band filter, 4: compensator,

5: illuminance detection unit, 51: illuminance sensor,

52: comparator, 6: keypad portion,

7: charging power unit, 8: microphone,

9: speaker, 10: display unit,

11: microprocessor, 21: main antenna,

22: main body keypad, 23: main speaker,

24: main unit microphone, 25A, 25B: power supply terminal,

A: portable device, B: main body,

TR1: transistor, R1-R5: resistor.

The wireless telephone having a power saving function according to the present invention for achieving the above object is to modulate and amplify the transmitted signal or low noise amplification and demodulation of the received RF signal and the operation is stopped or driven in accordance with a predetermined control signal A radiotelephone having an RF transmitting / receiving means, comprising: illuminance detecting means for detecting illuminance around the telephone and outputting a detection signal having a predetermined level corresponding to the detected illuminance, and based on a level signal input from the illuminance detecting means; It characterized in that it comprises a control means for controlling the operation of stopping or driving the RF transmission and reception means.

In addition, the present invention further comprises a key input means having a plurality of numeric keys and function keys, wherein the control means is any key input from the key input means in the state that the operation of the RF transmission and reception means is stopped If it is characterized in that the drive control the RF transmission and reception means.

According to the present invention having the above configuration, the control means blocks the operation of the RF transmission and reception means in the night time zone without the use of the portable device. Therefore, unnecessary power consumption in the portable device can be prevented.

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

1 is a block diagram showing a circuit configuration of a portable apparatus A of a wireless telephone having a power saving function according to an embodiment of the present invention.

In the drawing, reference numeral 1 denotes an antenna for transmitting or receiving an RF signal, and 2 denotes an RF transceiver for low noise amplification and demodulation of the signal received through the antenna 1, and modulating and amplifying the transmitted signal. In addition, the RF transceiver 2 is selectively turned on / off the RF transmission part and the RF reception part according to a control signal from the microprocessor 11 which will be described later, as in the conventional case.

In the drawing, reference numeral 3 is a bandpass filter for filtering only signals of a predetermined band, 4 is a compensator for compressing or expanding a signal transmitted and received through the bandpass filter 3, and 5 is a telephone. It is an illuminance detection unit that detects the illuminance of the surroundings and outputs a low level detection signal when the illuminance is lower than a predetermined level.

The illuminance detecting unit 5 has a resistor R1 and an illuminance sensor 51 coupled in series between the power supply voltage Vcc and the ground, and a collector is supplied to the coupling node between the resistor R1 and the illuminance sensor 51. The base of the NPN transistor TR1 coupled to the voltage Vcc and grounded by the emitter R2 is coupled. At this time, the illuminance sensor 51 has a characteristic that the resistance value decreases as the illuminance increases, for example.

In addition, the inverting terminal (-) of the comparator 52 is coupled to the coupling node of the emitter of the transistor TR1 and the resistor R2 through the resistor R3, and the comparator 52 includes the resistors R4 and R5. The reference voltage set by) is compared with the voltage input through the inverting terminal (−) to output a high or low level detection signal accordingly.

That is, the comparator 52 outputs a low level detection signal when the illuminance decreases so that the voltage inputted to the inverting terminal (-) becomes higher than the reference voltage inputted to the non-inverting terminal (+).

On the other hand, the reference numeral 6 in the drawing is a keypad unit having a plurality of numeric keys and function keys, 7 is normally connected to the main body of the cordless phone receives the power from the main body to charge the power, and also separated from the main body If so, the charging power supply unit for supplying the power required for the operation of the portable device (A), 8 is a microphone for converting the user's input voice into an electrical signal, 9 is a speaker for outputting an electrical voice signal as an audible sound.

In the drawing, reference numeral 10 denotes a display unit for displaying an operation state of the telephone, and 11 denotes a transmission part of the RF transceiver 2 in a non-driven state in a standby state in which the user does not use a portable device. In addition to performing normal control processing for periodically driving the reception part on and off, in particular, when the low level detection signal is input from the above-mentioned illuminance detection unit 5 in the standby state, the RF transceiver 2 is turned off. It is a microprocessor for setting control in a driving state.

On the other hand, Figure 2 is a perspective view showing the external appearance of a wireless telephone having a power saving function according to an embodiment of the present invention, in Fig. 2 A is a portable device, B is the main body of the wireless telephone.

Here, the portable device A is provided with an antenna 1 at an upper end, and an illuminance sensor 51 for detecting illuminance around the portable device A on one side of the upper end where the antenna 1 is installed. Is installed.

In the front portion of the portable apparatus A, a keypad portion 6 having 10 keys, a microphone 8, a speaker 9, and a display portion 10 are provided in the same manner as a conventional portable apparatus, and the lower portion thereof is provided. The power supply terminal 25A for receiving a predetermined charging power from the main body B when the main body B is coupled to the main body B is provided.

On the other hand, the main body B of the radiotelephone includes an antenna 21 for transmitting / receiving a predetermined frequency signal of the portable apparatus A, a keypad unit 22 having a plurality of numeric keys and function keys, and a speakerphone, as in the usual case. In addition to having a speaker 23 and a microphone 24 for a function, the power supply terminal 25B is coupled to the power supply terminal 25A of the portable device A to supply charging power to the portable device A. It is equipped with.

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

First, in a normal standby state where the user does not use the portable apparatus A, the microprocessor 11 controls the RF transceiver 2 so that the RF transmission part stops driving and the RF reception part periodically turns on / off. (ST1 stage).

Subsequently, when the user off-hooks the portable apparatus A by pressing the ON button by operating the keypad unit 6 of the portable apparatus A in the standby operation state, the microprocessor ( 11) the RF transmitter / receiver 2 is driven in a normal state, and an off-hook state capable of making a call to the mobile device A by transmitting and receiving predetermined data with a microprocessor (not shown) provided in the main body B. (Step ST2, ST3).

Therefore, in this state, the user can operate the keypad 6 to execute dialing or to make a call with a call requester from outside.

On the other hand, when the ambient light intensity around which the portable device A is installed is lowered below a certain level and the low level detection signal is input from the illuminance detection unit 5 in the call waiting state of the mobile device A (ST4 step), The processor 11 stops the driving of the RF transceiver 2 and cuts off power consumption by the RF transceiver 2 (step ST5).

Subsequently, a call is received from the outside in the above state and a ring signal is output through the speaker 23 provided in the main body B shown in FIG. When an arbitrary button provided on the keypad unit 6 of the portable apparatus A is selected (step ST6), the microprocessor 11 controls the RF transceiver 2 to control the RF transceiver 2. While driving to the normal state, the portable device A is set to the off-hook state (ST7 step).

Therefore, in this case, the user can make a normal call with an external caller by using the portable apparatus A. FIG.

When the user ends the call in the off-hook state and then sets the portable apparatus A to the on-hook state by operating the ON button installed in the keypad unit 6 (ST8 step), the microprocessor ( 11 again sets the RF transceiver 5 of the portable apparatus A to the non-driven state by executing steps ST1 to ST5 as the first step ST1.

Further, in the non-driven state of the RF transceiver 2 described above, the microprocessor 11 repeatedly executes steps ST4 to ST6 to determine whether a high level is input from the illuminance detection unit 5, that is, the portable device A When the ambient illuminance of the installed ambient light is repeatedly checked, the microprocessor 11 returns to the step ST1 and detects that the ambient illuminance has risen above a predetermined value. The portable apparatus A is set to a normal standby state in which the RF transmission part is in a non-driven state and the RF reception part is in a periodic driving state.

Therefore, according to the embodiment, since the driving of the RF transceiver 2 is stopped at night when the user does not use the portable apparatus A, power consumption due to unnecessary driving of the RF transceiver 2 is prevented. In addition, the use time of the portable apparatus A in the state where the portable apparatus A is separated from the main body can be extended significantly.

In addition, the present invention is not limited to the above embodiments and can be variously modified within the scope not departing from the technical gist of the present invention.

As described above, according to the present invention, it is possible to realize a wireless telephone having a power saving function that can prevent unnecessary power consumption by stopping the operation of the RF transceiver during the time period when the telephone is not used.

Claims (2)

A radiotelephone comprising: an RF transmitter / receiver means for modulating and amplifying a transmitted signal or low noise amplification and demodulation of a received RF signal, and an operation of which is stopped or driven according to a predetermined control signal, Illuminance detecting means for detecting illuminance around the telephone and outputting a detection signal of a predetermined level corresponding to the detected illuminance; And a control means for stopping or driving the operation of the RF transmission / reception means based on the level signal input from the illuminance detection means. The method of claim 1, It further comprises a key input means having a plurality of numeric keys and function keys, the control means is RF transmission and reception means when there is any key input from the key input means while the operation of the RF transmission and reception means is stopped Wireless telephone having a power saving function characterized in that the drive control.