KR20010000693U - The apparatus for saving stand-by power on radio telephone - Google Patents

Abstract

The present invention relates to a standby power saving device of a wireless telephone which turns on only the power necessary for the wireless standby and turns off the rest of the wireless telephone.

Power supply means for supplying power to all circuits to save power during standby of the radiotelephone, and to turn on or off the power of a predetermined circuit depending on the operation and standby time at the power supplied through the power supply means. The invention consists of a switching means and a control means for controlling the switching means to turn it off when it is in standby and to turn it on when it is in operation.

Description

The apparatus for saving stand-by power on radio telephone

The present invention relates to a standby power saving device of a wireless telephone which turns on only the power necessary for the wireless standby and turns off the rest of the wireless telephone.

In general, a wireless telephone is composed of a fixed device that is connected by wire to receive a ring signal and a voice signal of the other party and a portable device that is wirelessly connected to the fixed device to transmit and receive voice with the fixed device and an RF signal.

All of these devices are powered by the adapter, usually 12V AC. The above power supply is provided to be adjusted to a suitable voltage by the regulator according to the voltage used by the circuit in each device.

The power supply of the conventional radiotelephone fixing device is described with reference to FIG. 1 as follows.

1 is a block diagram illustrating a power supply of a conventional radiotelephone fixing device.

Referring to FIG. 1, a conventional wireless telephone portable device includes an audio unit 5 for processing a voice to receive a ring signal and a voice signal of a counterpart received through a wired line or to transmit a DTMF signal and a voice signal of a user. And a digital signal processor (DSP) unit 10 connected to the audio unit 5 to process the voice signal of the other party digitally or to process the digital signal as a voice signal, and to be automatically transmitted through the DSP unit 10. The memory unit 15 stores the response message and stores the message left by the other party, and modulates the voice signal of the other party to be connected to the audio unit 5 to be transmitted to the portable device by using an RF signal or from the portable device. An RF module 20 for demodulating the transmitted RF signal into a voice signal and applying it to the audio unit 5, an antenna 25 connected to the RF module 20 to wirelessly transmit and receive an RF signal with a portable device; All of the above CPU 30 for controlling the function, the RF module 20, the CPU 30, the audio unit 5, the DSP unit 10, the memory unit 15 and a power supply unit for supplying power to all circuits ( 35).

Looking at the operation of the conventional radiotelephone fixing device consisting of the above configuration as follows.

First, when a call is received, the ring signal of the other party is received through the audio unit 5, the audio unit 5 causes the ring signal to ring through the speaker (not shown), and the user receives the call. . The user makes a phone call through the mobile device, and the user's voice signal is transmitted from the mobile device as an RF signal, received through the antenna 25 of the fixed device, and demodulated as a voice signal by the RF module 20. The demodulated voice signal is voiced by the audio unit 5 into a suitable voice signal and transmitted to the other party.

In addition, when the user is absent, the user sets the automatic answering function, so that the message stored in the memory unit 15 is converted from the digital voice signal to the analog voice signal through the DSP unit 10 to convert the audio unit 5 to the audio unit 5. It is sent to the other party. When the other party leaves a message, the voice signal is converted into digital in the DSP unit 10 and stored in the memory unit 15.

In the case of calling the other party, when the user presses the other party's number using the mobile device, the DTMF signal is converted into an RF signal in the mobile device and received by the antenna 25 of the fixed device. The RF signal received through the antenna 25 is demodulated as a DTMF signal by the RF module 20 and transmitted to the counterpart phone through the audio unit 5. When the other party receives the call, the user's voice is transmitted to the other party through the same process as the DTMF signal.

For the operation of all of the above configuration is possible by the current supplied by the power supply unit 35.

Conventional radiotelephones that are powered in the above manner have a problem of consuming unnecessary power because the power is always supplied to all circuits instead of only the necessary circuits when the telephone is in standby.

The present invention is proposed to solve the above problems, and an object of the present invention is to provide a standby power saving device of the wireless telephone so that power is supplied only to the circuits necessary during the standby of the wireless telephone.

As a technical idea for achieving the object of the present invention, the power supply means for supplying power to all circuits, and the power supply of a predetermined circuit by distinguishing according to the operation and standby conditions in the power supplied through the power supply means The invention consists of a switching means for turning on and off, and a control means for controlling the switching means to turn it off when it is in standby and to turn it on when it is in operation.

1 is a block diagram for explaining the power supply of the conventional radiotelephone fixing device

Figure 2 is a block diagram illustrating a standby power saving device of the present invention wireless telephone

<Explanation of symbols for main parts of drawing>

5: Audio unit 10: DSP unit

15: memory 20: RF module

25 antenna 30 CPU

35: power supply unit 40: switching unit

Hereinafter, with reference to the accompanying drawings with respect to the configuration and operation of the embodiment of the present invention will be described.

Figure 2 is a block diagram illustrating a standby power saving device of the present invention wireless telephone.

Referring to FIG. 2, the present invention provides an audio unit 5 for processing a voice to receive a ring signal and a voice signal of a counterpart received through a wired line or to transmit a DTMF signal and a voice signal of a user, and the audio unit. And a DSP unit 10 which is connected to (5) and processes the voice signal of the other party as a digital signal or a digital signal as a voice signal, and is always kept powered on when waiting, and similarly to the DSP unit 10. In standby, the power is kept on, and stores the auto-response message to be transmitted through the DSP unit 10, stores the message left by the other party, and connects the memory unit 15 to the audio unit 5. And an RF module 20 for modulating a voice signal of the other party to be transmitted to the portable device into an RF signal, or for demodulating the RF signal transmitted from the portable device into a voice signal and applying it to the audio unit 5, and the RF module 20. Kite) Therefore, the antenna 25 for transmitting and receiving the RF signal to and from the wireless device wirelessly, and in the standby state is always kept on, and if the operation of the preliminary circuit is required to control the switching unit 40 to be described later to turn on the off circuit A CPU 30, a power supply unit 35 for supplying power to the RF module 20, the CPU 30, the audio unit 5, the DSP unit 10, the memory unit 15, and all circuits; Of the power supplied to all the circuits through the power supply unit 35, when the standby unit is under the control of the CPU 30, only the DSP unit 10, the memory unit 15, and the CPU 30 turn on the power. In the case of being in use, the remaining RF module 20, the audio unit 5 and the other switching unit (S / W) 40 for switching on and off.

Referring to the operation of the present invention made of the above configuration as follows.

The present invention will be divided into two cases, the case of waiting and the case of operation.

As the first waiting case, the current user does not use the telephone, the CPU 30 controls the switching unit 40 when the use of the telephone is finished, the RF module 20, the audio was supplied while using the telephone, audio The unit 5 and other circuits are switched on to off. As a result, the power supply unit 35 substantially supplies power only to the CPU 30, the DSP unit 10, and the memory unit 15. The reason for supplying power only to the CPU 30, the DSP unit 10, and the memory unit 15 during the standby will be explained. In the case of the CPU 30, the user recognizes that a call is received from the other party while waiting. Is kept on to recognize when the user is off-hook to make a call, and the DSP unit 10 and the memory unit 15 execute the automatic answering function set when the user is absent. In order for the user to receive a call from the other party, the automatic response message stored in the memory unit 15 can be transmitted to the other party through the DSP unit 10 and to record the other party's message.

The second case is a case in which a call is received from a counterpart or a user off-hooks to make a call. As soon as the CPU 30 recognizes the case, the CPU 30 controls the switching unit 40 to turn off the standby. The RF module 20 and the audio unit 5 are switched on.

The RF module 20 and the audio unit 5 which were turned off by the above are switched on so that the power of all the circuits of the fixing device is kept on. By the above process, all the circuits of the fixing device are kept on, and the user makes a phone call with the other party.

Through all the above processes, the standby power saving device of the wireless telephone is implemented as the present invention intends.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, conversions, and modifications are possible within the scope without departing from the technical spirit of the present invention. It will be apparent to those who have knowledge.

As can be seen from the above description, the present invention is designed to supply power only to the CPU and the auto answering circuit, which are necessary circuits, in a standby state, so as to save power supplied to all circuits of the radiotelephone. In the case of being in use, power is supplied to a circuit that is not supplied with power during standby, so that power is supplied only to a circuit that requires power according to a use mode, thereby saving power consumption of a wireless telephone.

Claims (2)

In a cordless phone, Power supply means for supplying power to all circuits, Switching means for turning on and off the power of the predetermined circuit to distinguish according to the operation and standby conditions in the power supplied through the power supply means; And controlling means for controlling said switching means to turn off when it is in standby and to turn it on when it is in operation. The circuit of claim 1, wherein the circuit which is turned on in the standby of the radio telephone, A standby power saving device for a radiotelephone comprising: a CPU (30), a DSP (10) and a memory (15).