KR20080042512A - Remote control system and method for controlling of the same - Google Patents

Abstract

A remote control system and a control method thereof are provided to transmit key signals inputted from a user by using at least one oscillation frequency, determine a normal signal in which signal distortion does not occur out of the infrared-ray signals of two input channels, and perform operations according to the normal signal, thereby improving the insensibility and malfunction of the remote control system and satisfying user's desire through the two channels even when lighting environment changes. A method for controlling a remote control system comprises the following steps of: generating a code corresponding to an input key signal if the key signal is inputted(S201,S202); generating at least one oscillation frequency(S203); modulating and amplifying the generated oscillation frequencies and codes(S204); generating and transmitting infrared rays according to modulated and amplified electric signals(S205); receiving the transmitted infrared-ray signals(S206); determining whether signal distortion occurs by interference(S207); determining an infrared-ray signal in which the interference does not occur out of the received infrared-ray signals and operating corresponding operations based on a normal infrared-ray signal(S208,S209).

Description

Remote control system and method for controlling of the same

1 is a view showing the configuration of a remote control system according to the present invention.

2 is a flow chart for explaining step by step the control method of the remote control system according to the present invention.

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

100: remote control device

110: key panel 120: code generator

130: first oscillator 140: first modulation / amplifier

150: first infrared transmitter 160: second oscillator

170: second modulator / amplifier 180: second infrared transmitter

200: video display device

210: tuner 220: input signal processing unit

230: audio / video decoder 240: audio / video processing unit

250: speaker 260: display unit

270: first infrared receiver 280: second infrared receiver

290: control unit

The present invention relates to a remote control system, and in particular, when receiving an infrared signal transmitted from a remote control by an infrared receiver, a remote control device and a remote control method capable of improving a malfunction caused by noise overlapping a normal infrared signal due to a three-wavelength fluorescent lamp. It is about.

In general, a remote control is used to remotely control home appliances or information equipment. The remote controller refers to a device for controlling an electronic device such as a TV, an air conditioner, and a VCR by generating an infrared signal according to an input key according to a user's key input.

Recently, with the development of electronic devices, remote controllers are being used in almost all electronic devices, and attempts have been made to integrate a plurality of remote controllers into one in relation to a home network.

Such a remote controller is used not only in a general home but also in any place where an electronic device is installed.

In general, the place where the remote control is most used is a living room of a normal home, and the object is a television.

Referring to the operation of a general remote control, once a user inputs a key through the remote control, an infrared signal corresponding to the input key command is transmitted. Then, the receiver receives and analyzes the transmitted infrared signal and controls the operation to be performed.

However, since these three-wavelength fluorescent lamps are dedicated to electronic ballasts instead of coiled magnetic ballasts, the electromagnetic waves generated here may cause frequency interference in the TV remote control receiver.

In other words, the amplifier in the conventional infrared receiver is set to a high gain to increase the operating distance of the remote control, and since the light emitted according to the external conditions of the three-wavelength bulb or fluorescent lamp, which is recently used, is amplified by the internal amplifier of the infrared receiver, When the noise is superimposed on the signal and applied to the receiver, the receiver recognizes the rising / falling edge of the input signal and recognizes the high / low of the input signal to determine the type of the input signal and thus the receiver cannot recognize the data. Or there is a problem causing the remote control insensitive phenomenon or malfunction by incorrectly recognized.

The present invention has been made to solve the above problems, and an object thereof is to enable an infrared signal according to a key input of a user to be transmitted based on at least one or more frequencies.

The present invention also provides a remote control system and a method of controlling the infrared signal of a normal channel that does not cause signal interference among at least one or two channels of infrared signals transmitted through the remote control device according to a user's key input. Has a different purpose.

Remote control system according to the present invention for achieving the above object is a remote control device for transmitting a code according to a key signal input from a user as at least one infrared signal, and at least one infrared signal transmitted through the remote control device It is characterized in that it comprises a video display device for controlling to perform the operation based on a normal infrared signal that does not generate a signal interference.

Preferably, the remote control device includes a key panel for inputting various key signals such as volume control and channel selection, a code generator for generating a code corresponding to the key signal input through the key panel, and at least one oscillation frequency. A first modulator / amplifier for modulating and amplifying the codes of the code generator and the oscillation frequency of the first oscillator to a predetermined level, the codes of the code generator and the second A second modulator / amplifier for modulating and amplifying the oscillation frequency of the oscillator to a predetermined level, and a first infrared ray for generating and transmitting respective infrared signals corresponding to electrical signals outputted through the first and second modulators / amplifiers; It includes a transmitter and a second infrared transmitter, which are characterized.

More preferably, the image display device includes a first infrared receiver for receiving an infrared signal transmitted through the first infrared transmitter, a second infrared receiver for receiving an infrared signal transmitted through the second infrared transmitter, and It is characterized by including a control unit for determining a signal that does not occur signal interference among the signals received through the first and second infrared receivers to control the operation according to the signal.

More preferably, the first oscillator generates an oscillation frequency of 38 KHz, and the second oscillator generates an oscillation frequency other than the 38 KHz.

More preferably, the control unit selects an arbitrary signal and controls the operation to be performed when there is no signal distortion due to interference in both the infrared signals received through the first infrared receiver and the second infrared receiver.

The control method of the remote control system according to the present invention for achieving the above object comprises the steps of generating a key code corresponding to the input key signal when the remote control key signal is input from the user, and generates different oscillation frequencies, respectively, Modulating / amplifying and outputting the generated key code, generating and transmitting infrared rays corresponding to the modulated / amplified electric signal, and determining a signal without signal interference among the transmitted infrared signals It is characterized in that it comprises a step of controlling to perform the operation.

Preferably, the step of generating the different oscillation frequency is characterized in that the step of generating a 38KHz oscillation frequency, and the step of generating other oscillation frequencies other than 38KHz.

More preferably, if all of the transmitted at least one infrared signal does not have a signal distortion due to interference, the method further comprises the step of selecting any of the received at least one infrared signal and controlling the operation to be performed. There is a characteristic.

Remote control system according to the present invention for achieving the above object is a key panel for inputting various key signals, such as volume control, channel selection, and code generation unit for generating a code corresponding to the key signal input through the key panel First and second oscillators for generating different oscillation frequencies, a first modulator / amplifier for modulating and amplifying the codes of the code generator and the oscillation frequencies of the first oscillators to a predetermined level; A second modulator / amplifier for modulating the code of the code generator and the oscillation frequency of the second oscillator and amplifying the oscillation frequency to a predetermined level, and respective infrared signals corresponding to the electrical signals outputted through the first and second modulators / amplifiers; It comprises a first infrared transmitter and a second infrared transmitter for generating and transmitting a feature.

Preferably, the first oscillator and the second oscillator generate an oscillation frequency of 38 KHz and an oscillation frequency except for the 38 KHz, respectively.

Hereinafter, a remote control system and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the configuration of a remote control system according to the present invention, Figure 2 is a flow chart for explaining a step-by-step control method of the remote control system according to the present invention.

First, as shown in FIG. 1, a remote control system according to the present invention includes a remote control device 100 for transmitting a code according to a user's key input as at least one infrared signal, and at least one transmitted through the remote control device. It is configured to include an image display device 200 that receives the above infrared signal and controls the operation to be performed based on a normal infrared signal that does not occur interference of a signal such as a three-wavelength fluorescent lamp.

The configuration of the remote control system is shown in Figure 2, the remote control device 100 is a key panel 110 for receiving various key signals from the user, and the key input through the key panel 110 A code generator 120 generating a code corresponding to the signal, a first oscillator 130 for generating an oscillation frequency of 38 kHz, a key code generated through the code generator 120, and the first oscillator And a first modulation / amplifier 140 for modulating the oscillation frequency generated through the 130 and amplifying the oscillation frequency to a predetermined level, and outputting the modulated / amplified signal through the first modulation / amplifier 140. A first infrared transmitter 150 for generating and transmitting infrared light, a second oscillator 160 for generating an oscillation frequency other than 38 kHz, a key code generated through the code generator 120 and the first code 2 modulates the oscillation frequency generated by the oscillator 160 and A second modulator / amplifier 170 for amplifying the bell, and a second infrared transmitter 180 for generating and transmitting infrared light according to an electric signal that is modulated / amplified through the second modulator / amplifier 170. It is configured to include).

Also, the image display device 200 demodulates a tuner 210 for tuning a broadcast signal of a channel desired by a user among broadcast signals received from the outside, and a broadcast signal tuned through the tuner 210, and outputs audio and video. And an input signal processor 220 for separating the additional information stream, an audio / video decoder 230 for receiving and decoding the separated audio and video streams through the input signal processor 220, and the audio / video. An audio / video processor 240 for performing a predetermined signal processing to output the decoded audio / video signal through the decoder 230 and an audio signal processed through the audio / video processor 240 The speaker 250, the display unit 260 for outputting a video signal processed through the audio / video processor 240, and the first infrared transmitter 150. A first infrared receiver 270 that receives the transmitted infrared signal, a second infrared receiver 280 that receives the infrared signal transmitted through the second infrared transmitter 180, and the first infrared receiver 270; And a controller 270 that receives the infrared signal received from the second infrared receiver 280 to determine a normal signal without signal interference, and controls the operation to be performed based on the infrared signal without signal interference. It is composed.

The operation and control method of the remote control system according to the present invention configured as described above will be described with reference to FIG. 3.

First, in the operation and control method of the remote controller 100, when a key signal is input through the key panel 110, the code generator 120 generates a code corresponding to the input key signal (S201). To S202).

In addition, the first oscillator 130 generates an oscillation frequency of 38KHz, and the second oscillator 160 generates an oscillation frequency other than 38KHz, respectively (S203). That is, the first oscillator 130 generates 38KHz, which is an oscillation frequency currently being used, and the second oscillator 160 prepares for the case where the signal distortion occurs due to signal interference such as a three-wavelength fluorescent lamp, such as 38KHz. An oscillation frequency other than 38 KHz generated through the first oscillator 130 may be generated, which may be interchanged.

Subsequently, the first modulator / amplifier 140 modulates and amplifies the oscillation frequency generated by the first oscillator 130 and the code of the code generator 120 to a predetermined level. The amplifier 170 modulates the oscillation frequency generated by the second oscillator 160 and the code of the code generator 120 and amplifies the code to a predetermined level (S204).

In addition, the first infrared transmitter 150 generates and transmits infrared light according to an electrical signal that is modulated / amplified through the first modulator / amplifier 140 and outputs the second infrared transmitter 180. The second modulator / amplifier 170 generates and transmits infrared light according to an electrical signal that is modulated / amplified and output (S205).

In addition, in the operation and control method of the image display device 200, the first infrared receiver 270 first receives an infrared signal transmitted through the first infrared transmitter 150, and the second infrared receiver 280. Receives an infrared signal transmitted through the second infrared transmitter 180 (S206).

Subsequently, the controller 290 receives the infrared signals received through the first infrared receiver 270 and the second infrared receiver 280 through two ports and determines whether signal distortion due to interference has occurred ( S207).

In addition, when there is a signal in which signal distortion is generated due to the interference (S207), the controller 290 may receive an infrared signal received through the first infrared signal receiver 270 and the second infrared signal receiver 280. Infrared signal does not occur in the middle of the interference is determined and based on the normal infrared signal that does not occur the interference is controlled to perform the operation (S208 ~ S209).

In addition, if there is no infrared signal generated by the signal distortion due to interference (S207), any one of the infrared signals received through the first infrared signal receiver 270 and the second infrared signal receiver 280 may be used. The controller 110 selects and controls the operation based on the selected infrared signal (S210 to S211).

As described above, the remote control system and its control method according to the present invention transmit a key signal input from a user using one or more different oscillation frequencies, and a normal signal in which no signal distortion occurs among the infrared signals of the two channels. By controlling the operation according to the corresponding infrared signal, improve the remote control insensitivity and malfunction caused by the signal distortion generated by the conventional triwave fluorescent lamps, and respond to user needs through two-channel response even if the lighting environment changes later Can satisfy.

As described above, the remote control system and the control method according to the present invention have a brightness of 1500Lux or more in front of the TV set by using four to twelve three-wavelength lamps in a new apartment, and can cope with the existing due to slimming of the product. In the domestic market where the TV can be used even in a place where the remote control is insensitive, the present invention provides the reliability of the basic set by improving the remote control insensitivity and malfunction through the present invention.

Claims (10)

A remote control device which transmits a code according to a key signal input from a user as at least one infrared signal; And a video display device configured to receive at least one infrared signal transmitted through the remote control device and to control a corresponding operation based on a normal infrared signal without interference of the signal. The method of claim 1, The remote control device includes a key panel for inputting various key signals such as volume control and channel selection, a code generator for generating a code corresponding to the key signal input through the key panel, and generating different oscillation frequencies, respectively. First and second oscillators, a first modulator / amplifier for modulating and amplifying the codes of the code generator and the oscillation frequency of the first oscillator to a predetermined level, the codes of the code generator and the second oscillator A second modulator / amplifier for modulating and amplifying the oscillation frequency to a predetermined level, a first infrared transmitter for generating and transmitting respective infrared signals corresponding to electrical signals output through the first and second modulators / amplifiers; Remote control system comprising a second infrared transmitter. The method of claim 2, The image display device includes a first infrared receiver for receiving an infrared signal transmitted through the first infrared transmitter, a second infrared receiver for receiving an infrared signal transmitted through a second infrared transmitter, and the first and second infrared receivers. And a control unit for determining a signal having no signal interference among the signals received through the second infrared receiver and controlling the operation according to the corresponding signal. The method of claim 2, And the first oscillator generates an oscillation frequency of 38 kHz and the second oscillator generates an oscillation frequency other than the 38 kHz. The method of claim 3, wherein And the controller selects an arbitrary signal and controls the operation to be performed when all the infrared signals received through the first infrared receiver and the second infrared receiver have no signal distortion due to interference. Generating a key code corresponding to the input key signal when a remote controller key signal is input from a user; Generating different oscillation frequencies and modulating / amplifying the oscillating frequencies together with the generated key codes and outputting the generated oscillation frequencies; Generating and transmitting infrared rays corresponding to the modulated / amplified and output electrical signals; And, And determining a signal having no signal interference among the transmitted infrared signals to control the operation to be performed. The method of claim 6, The generating of the different oscillation frequencies includes generating a 38 kHz oscillation frequency and generating a frequency excluding 38 kHz other oscillations. The method of claim 6, And selecting any one of the received infrared signals and controlling the operation to be performed when all of the transmitted infrared signals have no signal distortion due to interference. A key panel for inputting various key signals such as volume control and channel selection; A code generator for generating a code corresponding to a key signal input through the key panel; First and second oscillators for generating respective different oscillation frequencies; A first modulator / amplifier for modulating a code of the code generator and the oscillation frequency of the first oscillator and amplifying the oscillation frequency to a predetermined level; A second modulator / amplifier for modulating the code frequency of the code generator and the oscillation frequency of the second oscillator and amplifying the oscillation frequency to a predetermined level; And, And a first infrared transmitter and a second infrared transmitter for generating and transmitting respective infrared signals corresponding to the electrical signals output through the first and second modulators / amplifiers. The method of claim 9, And the first oscillator and the second oscillator generate an oscillation frequency of 38 kHz and an oscillation frequency other than the 38 kHz, respectively.

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