KR20040048490A - Tuner and television comprising wireless transmitter-receiver and method transmitting/receiving thereof - Google Patents

Abstract

PURPOSE: A tuner and television including a radio transmitter/receiver and a transmitting/receiving method of the tuner and television are provided to separate a tuner from a television system. CONSTITUTION: A tuner(100) includes an adaptor(110), a tuner module(120), a demodulator(130), a tuner antenna(140), a tuner transmitter(150), a tuner receiver(160), and an amplifier(170). The tuner module converts an RF signal received from the antenna into an IF signal. The demodulator demodulates the IF signal output from the tuner module into an AC signal. The tuner antenna transmits and receives radio signals. The tuner transmitter modulates the AV signal and transmits the modulated signal through the tuner antenna. The tuner receiver demodulates a channel control signal received from a television system(200) through the tuner antenna. The amplifier amplifies the channel control signal to allow the tuner module to tune a channel. The television system includes a TV antenna(210), a television receiver(220), and a television transmitter(230).

Description

TUNER AND TELEVISION COMPRISING WIRELESS TRANSMITTER-RECEIVER AND METHOD TRANSMITTING / RECEIVING THEREOF

The present invention relates to a broadcast system, and in particular, a tuner comprising a tuner having a radio transceiver for demodulating an IF signal into an AV signal and transmitting the signal to a television via radio, and tuning a channel according to a channel signal received from the television. A television and a method of transmitting and receiving the same.

In general, a tuner is used for an input of a radio receiver and refers to a device for selecting and taking out only a radio wave by tuning to a frequency of a predetermined radio wave or an electric signal, also called a tuner. Such a tuner is a device in which proper inductance and capacitance are combined, and one or both of the coil and the capacitor are variable, or the combination can be changed so that they can be tuned to various frequencies. For example, the radio receiver uses a variable capacitor to enable reception over the entire broadcast frequency band. In the case of a television receiver, a tuner is formed by integrating an antenna input unit to an intermediate frequency converter unit to form a sufficient electrical shield.

However, since the conventional tuner is mounted inside the television, when the viewer moves the television to a desired position, the television installation is limited because it must be moved while being connected through an antenna connector and a coaxial cable installed on the wall.

Accordingly, an object of the present invention is to solve the above problems, and to separate the tuner from the television, and to demodulate the IF signal to the AV signal in the tuner and transmit it to the television via wireless, so that the installation location of the television is not limited. .

1 is a block diagram schematically showing a configuration of a tuner and a television having a radio transceiver according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: tuner 110: adapter

120: tuner module 130: demodulator

140: tuner antenna 150: tuner transmitter

160: tuner receiver 170: amplifier

200: television 210: antenna for television

220: television receiver 230: television transmitter

Features of the present invention for achieving the above object,

A power supply unit which receives commercial power and converts the power into the power required for each component;

A tuner unit for converting an RF signal received from an antenna into an IF signal and outputting the converted signal;

A demodulator for demodulating an IF signal output from the tuner into an AV signal;

A tuner transmitter configured to modulate an AV signal demodulated by the demodulator and transmit the modulated AV signal through a tuner antenna;

A tuner receiver for demodulating a channel control signal received from a television via a tuner antenna;

And an amplifier for outputting the channel control signal received from the tuner receiver so that the tuner tunes a channel.

Here on the television,

A television receiver for demodulating a signal transmitted from the tuner transmitter through the television antenna and extracting an AV signal;

And a television transmitter for modulating the channel control signal output from the system and transmitting the modulated channel control signal through the television antenna.

Another feature of the invention,

In the tuner and television control method of claim 1,

Converting and outputting an RF signal received from an antenna into an IF signal at the tuner, demodulating the IF signal into an AV signal, modulating the demodulated AV signal, and transmitting the demodulated AV signal to the television;

Demodulating a signal received by the television to extract an AV signal;

Modulating a channel control signal on the television and transmitting it to the tuner;

And demodulating and then amplifying the channel control signal received from the television to tune the channel.

Hereinafter, a configuration of a tuner and a television including a radio transceiver according to the present invention will be described in detail with reference to FIG. 1.

1 is a block diagram schematically illustrating a configuration of a tuner and a television including a wireless transceiver according to the present invention.

Referring to FIG. 1, a tuner 100 including a wireless transceiver according to the present invention includes an adapter 110, a tuner module 120, a demodulator 130, a tuner antenna 140, and a tuner transmitter. 150, a tuner receiver 160, and an amplifier 170. As shown in FIG.

The adapter 110 receives commercial power (110 / 220V) and converts the power into the power required for each component.

The tuner module 120 converts the RF signal received from the antenna ANT into an IF signal and outputs the converted IF signal.

The demodulator 130 demodulates the IF signal output from the tuner module 120 into an AV signal.

The tuner antenna 140 transmits and receives a radio signal.

The tuner transmitter 150 modulates the AV signal demodulated by the demodulator 130 and transmits the modulated AV signal through the tuner antenna 140. Here, the tuner transmitter 150 selects a frequency that does not interfere with frequencies of other products (for example, cordless telephones, etc.), and preferably, an IF frequency band is used.

The tuner receiver 160 demodulates a channel control signal received from the television 200 via the tuner antenna 140.

The amplifier 170 amplifies the channel control signal received from the tuner receiver 160 so that the tuner module 120 tunes the channel.

Meanwhile, the television 200 includes a television antenna 210 for transmitting and receiving a radio signal and a television receiver 220 for demodulating a signal transmitted from the tuner transmitter 150 through the television antenna 210 to extract an AV signal. And a television transmitter 230 that modulates a channel control signal output from the system and transmits it through the television antenna 210.

Hereinafter, an operation of a tuner and a television including a wireless transceiver according to the present invention will be described in detail with reference to FIG. 1.

First, the tuner 100 including the wireless transceiver according to the present invention is coupled to the antenna connector (not shown) and the tuner module 120 formed on the wall, the adapter 110 is connected to a commercial power source, and also the television 200 Is a state in which commercial power is supplied while being spaced apart from the tuner 100.

When the viewer tunes the channel by turning on the television 200 in this state, a channel control signal is output from the television system, and the signal is modulated by the television transmitter 230 and radiated by the television antenna 210.

Then, the tuner receiver 160 of the tuner 100 demodulates the signal to extract the channel control signal, and the extracted channel control signal is amplified through the amplifier 170 and input to the tuner module 120.

As a result, the tuner module 120 synchronizes with a signal of a specific band among the RF signals received through the antenna ANT and outputs an IF signal of a corresponding channel. When the IF signal is output from the tuner module 120, the demodulator 130 demodulates it into an AV signal, and outputs the demodulated signal, and modulates the demodulated AV signal by the tuner transmitter 150 and radiates it through the tuner antenna 140. .

Then, the television receiver 220 demodulates the frequency signal received through the television antenna 210 to extract the AV signal, and supplies the extracted AV signal to the television system so that the viewer can watch the corresponding channel in the television system. Make sure

Therefore, with the tuner separated from the television, only the tuner is installed on the antenna connector formed on the wall and the television can be watched even if the TV is installed at any distance from the television. have.

As described above, according to a tuner and a television having a radio transceiver according to the present invention, and a method for transmitting and receiving the same, the tuner is separated from the television, and the tuner demodulates the IF signal into an AV signal and transmits it to the television via radio. It is possible to prevent the installation place of the device from being limited.

Claims (3)

In the tuner, A power supply unit which receives commercial power and converts the power into the power required for each component; A tuner unit for converting an RF signal received from an antenna into an IF signal and outputting the converted signal; A demodulator for demodulating an IF signal output from the tuner into an AV signal; A tuner transmitter configured to modulate an AV signal demodulated by the demodulator and transmit the modulated AV signal through a tuner antenna; A tuner receiver for demodulating a channel control signal received from a television via a tuner antenna; And an amplifier for outputting and amplifying a channel control signal received from the tuner receiver so that the tuner tunes a channel. The method of claim 1, In the television, A television receiver for demodulating a signal transmitted from the tuner transmitter through the television antenna and extracting an AV signal; And a television transmitter for modulating the channel control signal output from the system and transmitting the modulated channel control signal through the television antenna. In the tuner and television control method of claim 1, Converting and outputting an RF signal received from an antenna into an IF signal at the tuner, demodulating the IF signal into an AV signal, modulating the demodulated AV signal, and transmitting the demodulated AV signal to the television; Demodulating a signal received by the television to extract an AV signal; Modulating a channel control signal on the television and transmitting it to the tuner; And demodulating and then amplifying the channel control signal received from the television to tune the channel to the tuner.