KR100396658B1 - Apparatus for wireless controlling of TV - Google Patents

Abstract

The present invention relates to a wireless control device for a TV that enables data input and output of a TV and an external device wirelessly. In a display device connected to a plurality of external devices wirelessly, different devices are different for each device. A transmitter for allocating a radio frequency (RF) band of a channel, receiving a signal from an external device according to a control signal according to a user's selection, converting the signal into an RF signal of the corresponding channel, and outputting the RF signal of a corresponding channel; A receiver for transmitting a control signal to the transmitter to receive a signal, receiving an RF signal output from the transmitter, converting the signal into a baseband signal, and processing the video signal and audio signal to output the converted baseband signal; A first transmit / receive antenna connected to the transmitter for data input / output, and the transmitter It is configured to include a second transmission and reception antenna connected to the receiver for data input and output of the receiver to make the data transmission and reception of the TV and the external device flattened, enlarged, thinned, and the external device is easy to use for the user's TV. It has the effect of providing a clean design aesthetics.

Description

TV wireless control device {Apparatus for wireless controlling of TV}

The present invention relates to a TV, and more particularly to a radio control device of the TV.

In general, a TV is a device that enables a viewer to watch a broadcast signal containing a broadcast program through a series of signal processing.

In recent years, networking has been progressed by building a LAN in offices, and in such a situation, it is difficult to reconnect a plurality of wires when changing the layout of an office or changing a network connection device.

In particular, portable mobile devices such as notebook PCs, digital cameras, MP3 players, etc. are rapidly entering the market, and communication needs between devices have increased, and wireless devices are urgently needed due to the characteristics of these devices.

Wireless work of data communication between such devices is being actively performed, and the representative one is the IrDA (Infrared Data Association) standard committee, which is a wireless communication using infrared rays.

IrDA is easy to implement by using the infrared rays used for reception, but there are limitations on transmission speed and distance.

On the other hand, the active research with the IrDA is a Bluetooth standardization study, the Bluetooth standardization study is a method using a radio frequency (RF) to quickly transfer a large amount of data, the IrDA Compared to the above, there is no limit of distance, but the price is high, and also the restriction of radio regulations is followed.

In this situation, TVs employing plasma display panels (PDPs) and liquid crystal displays (LCDs), which are becoming flat, large, and thin, are in urgent need for wireless signal connection.

Hereinafter, a TV according to the related art will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a connection configuration of the TV and the external device according to the prior art, Figure 2 is a block diagram showing a wireless control device of the TV using infrared rays according to the prior art, Figure 3 is a wired according to the prior art Figure 4 is a block diagram showing the configuration of the used TV, Figure 4 is a block diagram showing a plurality of TVs connected by one wire according to the prior art.

First, as shown in FIG. 1, the TV receiver 106 is connected to external devices such as a video camera 101, a VCR 102, a cable set-top box 103, and a DVD player 104. do.

The external devices such as the video camera 101, the VCR 102, the cable set-top box 103, the DVD player 104, and the like are displayed on the TV receiver 106, respectively. Or the speaker is converted into a playable signal and output as video and audio.

The signal from the external device is output in two forms, a baseband or a radio frequency (RF), and is input to an RF input terminal or a baseband input terminal of the TV receiving device 106.

Meanwhile, the TV receiving device 106 receives an RF signal and a signal from an external device wirelessly transmitted through the RF receiving device 105, and receives a baseband output from the external devices. The signal is input to the baseband input terminal and processed.

The TV receiving apparatus 106 selects and displays one of a signal output from the plurality of external devices 102 to 104 by wire or an RF signal 105 input through the wireless according to a user's request. At the same time, voice is output through the speaker.

On the other hand, as shown in Figure 2, TV wireless control apparatus using infrared rays according to the prior art is a transmitter comprising an external device TV signal output unit 201, transmitter 202, infrared transmitter 203, and infrared receiver 204, receiver 205, TV receiver 206 is composed of a receiving unit.

As shown in FIG. 2, the operation of the transmitter and the receiver using the infrared light of the TV configured as described above may output the external device TV signal decoded through the external device TV signal output unit 201 to the transmitter 202. The output external TV signal is converted into an infrared signal by the transmitter 202 and output to the infrared transmitter 203.

Subsequently, the infrared transmitter 203 receives a constant power supply and wirelessly transmits the infrared signal to the receiver.

In addition, the infrared receiver 204 operating under a constant power supply receives an infrared signal transmitted from a transmitter wirelessly and outputs the signal to the receiver 205, and the receiver 205 converts the input infrared signal into a TV signal. The TV receiver 206 is switched to output the TV signal. The TV receiver 206 processes the input TV signal, displays an image on a screen, and outputs an audio signal through a speaker.

In addition, in the connection configuration of the TV for user control according to the prior art, as shown in FIG. 3, a user transmits a control signal to the TV using a user key input device (remote control or input key 305). The second function control unit 304 receives the control signal, and if the control signal is a signal for controlling the TV, applies a control signal to the receiver 303 of the TV to control the operation of the TV. If the signal is for controlling an external device, the control signal is transmitted to the external device connected by wire to the TV.

The transmitted control signal is input by the second function controller 301 to control the operation of the external device 302.

Meanwhile, a block diagram showing a plurality of TVs connected by one wire according to the related art receives a signal source 401 from the outside and converts the signal into a signal of a predetermined type through the transmitter 402 as shown in FIG. 4. When the TVs are wired to a plurality of TV receivers connected in a single line, the plurality of TVs receive the source signal and process the same to output video and audio.

In other words, the method of supplying signals to multiple generations with a single wire such as a public antenna or a wired cable reduces wires, thereby reducing costs and providing a concise appearance.

However, the radio control apparatus of the TV according to the related art described above has the following problems.

First, there is a problem in that it is difficult to efficiently configure a wired connection or arrangement that is complicated by an increase in the number of external devices connected to the TV.

Second, when a plurality of external devices are simultaneously connected to a TV that is being flattened, enlarged, and thinned, the wired cable is not easily connected and the TV's design constraints are followed.

Accordingly, an object of the present invention is to provide a wireless control apparatus for a TV, which enables data input / output of a TV and an external device wirelessly.

1 is a block diagram showing a connection configuration of an external device and a TV according to the prior art.

Figure 2 is a block diagram showing a wireless control device of the TV using infrared rays according to the prior art

Figure 3 is a block diagram showing the configuration of a TV using a wired according to the prior art

Figure 4 is a block diagram showing a plurality of TVs connected by one wire according to the prior art

5 is a block diagram showing a radio control device of the TV according to the present invention.

6 is a block diagram showing a transmitter of the radio control apparatus of the TV according to the present invention.

7 is a block diagram showing a receiving unit of the radio control apparatus of the TV according to the present invention.

8 is a view showing a user key input device of the TV radio control apparatus according to the present invention

9 is a block diagram showing an embodiment of a radio control apparatus of the TV according to the present invention.

＊ Description of symbols for main parts of the drawings ＊

602: up converter 603: transmitter

604: control receiver 605: first transmit and receive antenna

606: second transmit and receive antenna 607: receiver

608: down converter 609: TV receiver

610: control transmission unit 611: function control unit

612: user key input device

In accordance with an aspect of the present invention, a wireless control apparatus for a TV according to the present invention includes a radio frequency (RF) band of a different channel for each device for a plurality of external devices. A transmitter for receiving a signal of a corresponding external device according to a control signal according to a user's selection, converting the signal into an RF signal of a corresponding channel and outputting the signal, and transmitting a control signal to the transmitter to receive a corresponding external device signal according to a user's selection And a receiver for receiving the RF signal output from the transmitter, converting the signal into a baseband signal, and outputting the converted baseband signal through video and audio processing, and a first unit connected to the transmitter for data input / output of the transmitter and the receiver. Transmitting and receiving antenna, and the receiving unit for data input and output of the transmitter and receiver And the second consisting of a transmitting and receiving antenna characteristics are determined.

Hereinafter, a preferred embodiment of a TV radio control apparatus according to the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 5, the transmitting and receiving unit of the TV wireless control apparatus according to the present invention converts a user control signal in the form of RF (Radio Frequency) received from the first transmission / reception antenna 605 into an external device control signal. A control receiver 604 for controlling an external device, an up converter 602 for converting a signal of an external device by an external device control of the control receiver into an RF signal of a specific channel, and a conversion in the up converter 602. A transmitter comprising a transmitter 603 which converts the converted RF signal into a signal of an external output type and outputs the signal to the first transmit / receive antenna 605, a user key input device 612 for inputting a user's request command, and a user The function control unit 611 determines whether the control signal according to the key signal input of the key input device 612 is an external device or a TV control signal, and receives the external device control signal from the function control unit 611. A control transmitter 610 for converting an RF signal into an RF signal and outputting the RF signal to the second transmit / receive antenna 606 and a radio frequency (RF) signal received from the second transmit / receive antenna 606 corresponding external devices. A receiver 607 that converts and outputs a radio frequency (RF) signal of a channel, a down converter 608 that converts the RF signal into a baseband signal, and outputs the baseband signal input from the downconverter 608; It is composed of a receiving unit consisting of a TV receiving unit 609 for outputting the video and audio processing according to the user control signal input from the function control unit 611.

As illustrated in FIG. 5, when the control signal is input by the key input of the user key input device 612, the function control unit 611 may operate the TV. If the control signal is a signal for controlling the operation of the TV or a signal for controlling an external device, and outputs the control signal to the TV receiving unit 609 if the signal for controlling the operation of the TV, the control signal is external If the signal is for controlling the device, the signal is output to the control transmitter 610.

As shown in FIG. 8, the key input device includes a TV function related key, that is, a key 901 for controlling a channel and a volume adjusting key, a voice, and an image, and a key for controlling an external device (for example, a VCR). In other words, the channel and volume control keys of the external device, the play and stop keys, the power on / off key 902, and a wireless channel setting-related key, that is, a key 903 related to the setting for selecting a signal of the input external device TV and external device integrated key input device.

The external device control signal is converted into a predetermined RF signal by the control transmitter 610 and output to the transmitter through the second transmit / receive antenna 606.

The RF signal is then input to the transmitter via the first transmit / receive antenna 605. The input RF signal is converted into the external device control signal in the control receiver 604 to control the operation of the external device.

On the other hand, the signal 601 of the external device by the operation of the external device is converted into an RF signal of a specific channel through the up converter 602, the RF signal is a signal of the form that can be output to the outside through the transmitter 603 The converted RF signal of the outputable form is transmitted to the second transmit / receive antenna 606 of the receiver through the first transmit / receive antenna 605.

Subsequently, the receiver receives an RF signal of a specific channel output from the transmitter through a second transmit / receive antenna 606 and converts the received RF signal of the specific channel into an RF signal of a corresponding external device channel in the receiver 607. The down converter 608 converts the RF signal of the corresponding external device channel into a base band signal and outputs the signal to the TV receiver 609.

The TV receiver 609 outputs the baseband signal by video and audio processing according to the user control signal received from the function controller.

In the meantime, the transmitter and receiver of the TV will be described in detail as follows.

First, as illustrated in FIG. 6, a transmitter is a user in a power source 701 for supplying power of a transmitter, an external device signal processor 702, and an RF (Radio fequency) signal input from the first transmit / receive antenna 709. A trap circuit 710 for extracting a control signal, a user control receiver 711 for converting the extracted user control signal in the form of an infrared signal into a baseband signal in the form of an infrared signal, and the baseband signal of the infrared form An infrared detector 714 for decoding and outputting a control signal, an amplifier 712 for amplifying a signal decoded by the infrared detector 714, and a signal amplified by the amplifier 712. A function control unit 713 for controlling a device and controlling a signal of an external device, an image amplifying unit 703 for extracting an image signal from an external device signal and amplifying the signal into a predetermined signal, and a voice signal from an external device signal. An audio amplifier 704 for extracting and amplifying a predetermined signal, a control oscillator 706 for oscillating a frequency corresponding to a specific channel according to a control signal of the function controller, and the amplified image / audio signal in the control oscillator A modulator 705 for converting an RF signal in synchronization with the output frequency band and outputting the RF signal; and a low power amplifier 707 for receiving an RF signal output from the modulator 705 and amplifying the signal into a signal of an external transmission type. ), And a band pass filter 708 which extracts only a signal of a desired band from the RF signal amplified by the low power amplifier and outputs the signal to the first transmit / receive antenna 709.

Referring to the operation of the transmitter in the wireless control apparatus of the TV according to the present invention configured as described above in detail as shown in Figure 6, first receives a signal output from the external device from the external device signal processing unit 702, a predetermined image The signal and voice signal are converted and output.

The video signal output from the external device signal processor 702 is amplified and output through the video signal amplifier 703, and the audio signal output from the external device signal processor 702 is the audio amplifier 704. Amplified by the modulator 705 and applied to the modulator 705.

On the other hand, the RF (Radio Frequency) signal received by the transmission / reception antenna 709 is removed to the user control receiver 711 after all signal frequency bands except the signal frequency band related to the user's control are removed from the trap circuit 710. Is output.

The RF signal is converted into a baseband signal in the form of an infrared signal by the user control receiver 711 and output to the amplifier 712.

Meanwhile, the infrared detector 714 decodes the baseband signal of the user control receiver 711 into an external device control signal and applies it to the amplifier 712, and the amplifier 712 applies the control signal. Amplified and output to the function control unit 713.

The function controller 713 analyzes the input infrared signal to determine whether it is a signal to control a TV or a signal to control an external device, and if it is a signal to control the TV, the control oscillator 706 frequency of the external device. A control signal for inputting a band is output, and if the signal is a signal for controlling an external device, the control signal is output to the external device signal processor 702 to control the external device signal.

Subsequently, the control oscillator 706 outputs a frequency of a predetermined RF signal to the modulator 705 according to the control signal of the function control unit 713, and the modulator 705 outputs the frequency from the control oscillator 706. The video signal and the audio signal in the form of the input baseband signal are synchronized with the output RF signal frequency to convert the video signal and the audio signal into a predetermined RF signal.

The external device is allocated to an RF frequency band of a channel set as shown in [Table 1].

Channel assignment RF frequency band (MHz) External device 1 CH2 54-60 External device 2 CH3 60-66 External device 3 CH4 66-72 External device 4 CH5 76-82

That is, the signal of the external device is set by assigning the channel to the RF frequency band as shown in [Table 1] can be set the same as the channel corresponding to the TV signal.

The video and audio signals converted by the modulator 705 into predetermined RF signals are amplified by the low power amplifier 707 and output to the band pass filter 708. .

Subsequently, the band pass filter 708 removes the remaining signal components except the signal to be transmitted from the amplified RF signal and outputs the signal to the outside through the transmission / reception antenna 709.

Meanwhile, when the receiver is described in detail in the wireless control apparatus of the TV according to the present invention, as shown in FIG. 7, a power source 801 for supplying power of the receiver device, an infrared detector 814 for detecting an infrared signal, and An amplifying unit 815 for amplifying and outputting an infrared signal detected by the infrared detecting unit 814, and determining whether the TV control signal or the external device control signal is received by receiving the infrared signal amplified by the amplifying unit 815. A trap circuit 817 for extracting a signal to control an external device from a signal input from the user control transmitter 816 and the user control transmitter 816 and outputting it as an RF signal, and inputs a signal output from the trap circuit 817. A transmission and reception antenna 802 for receiving an RF signal output from the external device transmission unit and a user R input from the transmission and reception antenna 802. A band pass filter 803 for transmitting the TV only through a control signal in an F signal, a wireless tuner 804 for selecting a signal of a corresponding external device from a signal input to the band pass filter 803, and a TV broadcast signal TV signal input terminal 805 for receiving the signal, VHF tuner 806 for tuning the VHF signal from the signal of the TV signal input terminal, UHF tuner 807 for tuning the UHF signal from the signal of the TV signal input terminal A function control unit 813 for selecting an input signal among the wireless tuner 804, the VHF tuner 806, and the UHF tuner 807 according to a user control signal input from the band pass filter 803, and the function. A demodulator 808 for separating the signals of the wireless tuner 804, the VHF tuner 806, and the UHF tuner 807 according to the signal selection of the controller 813 into video and audio signals and converting the signals into baseband signals. , Demodulation A voice processing unit 809 for receiving an audio signal output from the unit 808 and converting the signal into a speaker outputable signal, a speaker 811 for voice outputting the signal of the voice processing unit, and a video signal of the demodulation unit for screen output. The image processing unit 810 converts the signal into a possible form, and the TV receiver 812 for screen outputting the signal of the image processing unit 810.

Looking at the operation of the receiver of the radio control apparatus of the TV according to the present invention configured as described above are as follows.

First, as shown in FIG. 7, the infrared detector 814 detects an infrared user control signal and amplifies and outputs the predetermined signal through the amplifier 815.

The user control transmitter 816 receives the infrared signal amplified by the amplifier 815 and determines whether it is a signal to control an external device or a signal to control an external device. The circuit 802 selects only a signal related to user control and outputs the RF signal, and the RF signal is output to the transmitting apparatus through the second transmit / receive antenna 800.

On the other hand, the RF signal of the external device input from the second transmit / receive antenna 800 is output by passing only the signal channel of the corresponding external device in the band pass filter 803, the output from the band pass filter 803 The signal of the corresponding external device is output from the wireless tuner 804 to the modulator 808 according to the signal of the function controller.

At this time, the TV broadcast signal is received through the TV signal input terminal 805, the VHF signal is tuned through the VHF tuner 806 from the signal input to the TV signal input terminal, the signal input to the TV signal input terminal UHF signals are tuned in the UHF tuner.

Looking at the configuration of the channel region of the TV and the channel region of the external device through [Table 2] as follows.

Frequency band Band separator VHF VHF L BAND VHF H BAND External device BAND UHF UHF BAND External device BAND

[Table 2] is an example of frequency band separation related to external device tuning. The frequency band of the external device can be set to be used in any VHF or UHF band.

On the other hand, according to the user control signal input from the band pass filter 803, the function control unit 813 receives an input signal of the VHF tuner 806, UHF tuner 807 of the wireless tuner 804, TV tuner unit. The demodulator 808 is selected and input to the demodulator 808. The demodulator 808 separates the signals of the wireless tuner 804, the VHF tuner 806, and the UHF tuner 807 into video and audio signals. Convert to a band signal.

The audio processor 809 receives an audio signal converted from the demodulator 808 into a baseband signal, converts the audio signal into a voice output signal, and outputs the converted audio signal through the speaker 81. The video signal is converted into a baseband signal of the demodulator 808 and is outputted through the TV image output unit 812.

Examples

According to an embodiment of the present invention when a plurality of external devices are connected in the wireless control apparatus of the TV, a first external device signal processor 1202 for processing a signal of the first external device, 2 An external device signal processing unit 1200 including a second external device signal processing unit 1203 for processing signals of an external device, a plurality of signal processing units for processing signals of a plurality of external devices, and a transmission / reception antenna 1219. A trap circuit 1215 for extracting a user control signal from an RF (Radio fequency) signal input from the user, and a user control receiver 1216 for converting the extracted user control signal in the form of an infrared signal into a baseband signal in the form of an infrared signal. ), An infrared detector 1218 for decoding the baseband signal of the infrared form into an external device control signal, and outputting the decoded signal from the infrared detector 1218. An amplifying unit 1217 for amplifying a call, a function control unit 1218 for receiving a signal amplified by the amplifying unit 1217, selecting and controlling the plurality of external devices, and controlling a signal of the external device; An image amplifier 1205 which extracts an image signal from an external device signal and amplifies the signal into a predetermined signal, an audio amplifier 1206 that extracts an audio signal from the external device signal and amplifies the signal into a predetermined signal, and the corresponding amplified output signal. External device oscillators 1207, 1209, and 1211 for oscillating video / audio signals of external devices at a frequency corresponding to a specific channel of the RF signal, and synchronizing the amplified video / audio signals with a frequency band output from the control oscillator Amplification unit 1208, 1210, and 1212 for converting and outputting an RF signal, and amplifying the RF signal output from the modulators 1208, 1210 and 1212 into a signal of an external transmission type. (1213), and extracts only a signal of a desired band from the RF signal amplified by the power amplifier unit 1213 is composed of a band-pass filter 1214 to output to the transmitting and receiving antennas.

As shown in FIG. 9, an operation of a radio control apparatus of a TV connected to a plurality of external devices configured as described above may be performed by the trap circuit 1215. All signal frequency bands except the signal frequency band are removed and then output to the user control receiver 1216.

The RF signal is converted into a baseband signal in the form of an infrared signal by the user control receiver 1216 and output to the amplifier 1217.

Meanwhile, the infrared detector 1217 decodes the baseband signal of the infrared type output from the user control receiver 1216 into an external device control signal and applies it to the amplifier 1217, and the amplifier 1217 The control signal is amplified and output to the function control unit 1213.

The function control unit 1213 analyzes the input signal to determine whether the signal is to control a TV or a signal to control an external device, and if the signal is to be controlled to the TV, the programmable oscillator control unit 1201 of the external device. A control signal for inputting a frequency band is output, and if the signal is a signal for controlling an external device, the control signal is output to the external device signal processing units 1202, 1203, and 1204.

In this case, the signals output from the plurality of external devices are received by the plurality of external device signal processing units 1202, 1203, and 1204 and converted into predetermined video signals and audio signals, and are outputted according to the control signals of the function controller. The signal of the device processing unit is selected and processed.

And the video signal output from the external device signal processing unit (1202, 1203, 1204) is amplified and output through the video signal amplifier 1205, the audio output from the external device signal processing unit (1202, 1203, 1204) The signal is amplified by the voice amplifier 1206 and applied to the modulators 1208, 1210, 1212.

The programmable oscillator controller 1201 selects an external device oscillator and a modulator of the corresponding external device according to the control signal of the function control unit, and outputs a control signal for oscillating the frequency of the corresponding external device channel.

The external device oscillators 1207, 1209, and 1211 output frequencies of predetermined RF signals to the modulators 1208, 1210, and 1212 according to control signals of the function controller 1213, and the modulator ( 1212 converts and synchronizes the video signal and the audio signal of the input baseband signal type to the RF signal frequencies output from the external device oscillators 1207, 1209, and 1211 to synchronize the video signal and the audio signal with a predetermined RF signal. Will be converted to.

The video and audio signals converted by the modulators 1208, 1210, and 1212 into predetermined RF signals may be amplified by the power amplifier 1213 to be externally output to the band pass filter 1214. Is output.

Subsequently, the band pass filter 1214 removes the remaining signal components except the signal to be transmitted from the amplified RF signal and outputs the signal to the outside through the transmission / reception antenna 1219.

As described above, the wireless control apparatus of the TV according to the present invention makes it easy to connect external devices to the TV by wirelessly transmitting and receiving data between the TV and the external device, which are being planarized, enlarged and thinned. Has the effect of providing.

Claims (4)

In the display device wirelessly connected to a plurality of external devices, Allocating RF (Radio Frequency) band of different channel to each device for each external device, and receiving the signal of the external device according to the control signal according to the user's selection and converting to RF signal of the corresponding channel A transmitter; Transmitting a control signal to the transmitter to receive a corresponding external device signal according to a user's selection, receives an RF signal output from the transmitter, converts the signal into a baseband signal, and outputs the processed baseband signal by video and audio processing. Receiving unit; A first transmit / receive antenna connected to the transmitter for data input / output of the transmitter and the receiver; And And a second transmit / receive antenna connected to the receiver for data input and output of the transmitter and the receiver. The method of claim 1, The transmitting unit A trap circuit for extracting a user control signal from an RF signal received from the first transmit / receive antenna; A user control receiver for converting the extracted user control signal in the form of an RF signal into a baseband signal in the form of an infrared signal; An infrared detector for decoding and outputting the baseband signal of the infrared type into an external device control signal; An amplifier for amplifying the signal decoded by the infrared detector; An external device signal processor for processing and outputting signals from external devices as video and audio signals; A function controller for receiving an external device control signal from the amplifier and controlling the external device signal processor and outputting a control signal to oscillate an external device signal in a frequency channel of the corresponding external device; An image amplifier for amplifying the video signal output from the external device signal processor into a predetermined signal; A voice amplifier for amplifying the voice signal output from the external device signal processor into a predetermined signal; A control oscillator configured to have the same number as the external device and output a frequency corresponding to a specific channel of the RF signal according to a control signal of the function controller; A modulator configured to convert the amplified video / audio signal into an RF signal in synchronization with a frequency channel output from the control oscillator, the same number as that of the external device; A low power amplifying unit which receives the RF signal output from the modulator and amplifies the RF signal into a signal of an external transmission type; And a band pass filter for extracting only a signal of a desired band from the RF signal amplified by the low power amplifier and outputting the signal to the first transmit / receive antenna. The method of claim 2, And a programmable oscillator controller for selecting and controlling the control oscillator and the modulator for processing the external device signal. The method of claim 1, The receiving unit An infrared detector which detects a user control signal in the form of an infrared signal and decodes the signal into a TV control signal or an external device control signal; An amplifier for amplifying and outputting a signal detected by the infrared detector; A user control transmitter converting the signal amplified by the amplifier into an RF signal and determining whether the RF signal is a TV control signal or an external device control signal; A trap circuit for extracting an external device control signal from the RF signal input from the user control transmitter and outputting it to a second transmit / receive antenna; A band pass filter for extracting a signal of the corresponding external device from the RF signal of the external device inputted from the second transmission / reception antenna; A wireless tuner for outputting a signal of a corresponding external device input from the band pass filter according to a user control signal; A TV tuner unit for selecting a VHF signal or a UHF signal from the TV broadcast signal; A function controller for outputting a control signal for selecting an input signal from the VHF or UHF signal of the wireless tuner and the TV tuner according to a user control signal input from the user control receiver; A demodulator for separating the signals of the wireless tuner and the TV tuner input according to the signal selection of the function controller into video and audio signals and converting the signals into baseband signals; An image processor for processing the image signal output from the demodulator as a signal capable of outputting a screen and outputting the signal; And a voice processor configured to process and output a voice signal output from the demodulator as a voice output signal.