KR20050122331A - Apparatus for outputting rf possible av output - Google Patents

Abstract

The present invention provides an RF device that connects a first device for selectively outputting a broadcast signal and a playback signal reproduced on a recording medium, and a second device for outputting a playback signal or broadcast signal provided from the first device to a display unit and a speaker. In particular, the first apparatus includes a first switching unit for outputting only one of a broadcast signal and a reproduction signal to the RF terminal, and a first switching unit for controlling the first switching unit to output only the reproduction signal when a signal for reproducing the recording medium is input. And a first microcomputer for controlling the switching unit, wherein the second device includes a tuner unit for outputting video and audio signals by tuning a broadcast signal output from the RF terminal of the first device, and a reproduction signal output from the first device. A band pass filter that separates video and audio signals, and a playback signal received through an RF terminal connected to the first device, Or a second switching unit for providing a broadcast signal received through an RF terminal connected to the first device to the tuner unit, and a signal for viewing a reproduction signal reproduced from a recording medium of the first device. And a second microcomputer for controlling the second switching unit to provide a reproduction signal received through the connected RF terminal to the band pass filter.

Description

Rf output device capable of AVA output {APPARATUS FOR OUTPUTTING RF POSSIBLE AV OUTPUT}

The present invention relates to an RF output device of V-Cal. In particular, an RF output device capable of AV output capable of providing a clear sound quality and image quality to a user by reducing a reproduction signal from being affected by a broadcast signal by omitting a modulation process It is about.

In general, in the case where the TV and the VRC are connected to each other through a cable connecting the respective RF terminals, the broadcast signal received from the broadcasting station and the signal reproduced from the videotape are received by the modulator. Provided as a TV through a channel, a video signal is displayed through the TV receiver, and an audio signal is output through a speaker.

In this case, the specific channel is a modulation channel set in the modulator, and a broadcast signal received from V-Cal through an antenna and a signal reproduced from video tape are provided to the TV through this specific channel. In Korea, three or four channels are used.

On the other hand, when the user switches to V-CAL mode while using the adjacent channel around the specific channel described above, i.e., 29 or 40 channels in the European style and 2 or 5 channels in the Republic of Korea, Interference may occur.

In detail, when the TV mode is changed from the TV mode to the V-CAL mode by the mode switch, the user watching the TV is adjacent to the V-C modulation modulation channel. The broadcast signal is provided inside VRC through a specific channel of the modulator. In other words, since the broadcast signal currently received through the antenna is amplified by the booster inside the VCAL and provided to the TV, interference between the broadcast signal received through the antenna and the signal reproduced on the video tape is generated.

In other words, when the reproduction signal generated from the VRC to be provided to the TV through the RF terminal is affected by the broadcast signal received from the antenna when modulated to a specific channel, it is almost impossible to watch the VRC on the TV.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art, and outputs a playback signal reproduced from a recording medium through an RF terminal without a modulation process and outputs a reproduction signal output from the RF terminal using a band pass filter. By separating the audio signal, it is possible to provide an RF output device capable of AV output capable of providing clean sound quality and image quality to the user by reducing the reproduction signal from being affected by the broadcast signal by omitting the modulation process.

In order to achieve the above object, the present invention provides a first device for selectively outputting a broadcast signal and a playback signal reproduced from a recording medium, and a display unit and a speaker for outputting a playback signal or broadcast signal provided from the first device. An RF device for connecting a second device, the first device comprising: a first switching unit for outputting only one of the broadcast signal and the reproduction signal to an RF terminal; and a signal for reproducing the recording medium; And a first micom to control the first switching unit to control the first switching unit to output only the reproduction signal, wherein the second device is configured to tune the broadcast signal output from the RF terminal of the first device to adjust the video and A tuner unit for outputting an audio signal, and a van for separating a reproduction signal output from the first device into a video and audio signal A second switch providing a pass signal and a reproduction signal received through an RF terminal connected to the first device to the band pass filter, or a broadcast signal received through an RF terminal connected to the first device to the tuner unit; And a second switching unit to provide the band pass filter with a reproduction signal received through an RF terminal connected to the first apparatus when a signal for viewing a reproduction signal reproduced from the recording medium of the first apparatus is input. And a second microcomputer to control.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a system to which an RF output apparatus capable of AV output according to the present invention is applied.

Referring to FIG. 1, the system includes a broadcast signal unit 100 for selectively outputting a broadcast signal and a playback medium reproduced on a video tape, for example, a video tape, and a playback signal or broadcast signal provided from the BC signal unit 100. It is composed of a TV unit 110 to display the display unit and output to its own speaker, TV unit 110 and VAL unit 100 is connected by a cable connecting the RF terminal to transmit and receive playback signals and broadcast signals do.

At this time, the VRC unit 100 is connected to a cable RF terminal 101 for providing a playback signal or a broadcast signal to the TV unit 110, and the VCD deck unit for reproducing the loaded video tape to output the playback signal (102), a first key input unit (101) for selectively switching between the V-al mode and the TV mode of V-al, a broadcast signal received through the antenna and the reproduction signal output from the V-alk deck unit (102). In order to output only a reproduction signal to the RF terminal 101 when the first switching unit 104 outputting only one to the RF terminal 101 and a signal for switching from the first key input unit 101 to the BC mode are input. The first microcomputer 105 controls the first switching unit 104.

The TV unit 110 is connected to a cable and the RF terminal 111 for receiving a reproduction signal or a broadcast signal output from the VAL unit 100 and a broadcast signal output from the VAL unit 100 by tuning the video and A tuner unit 112 for outputting an audio signal, a band pass filter 113 for separating the reproduction signal output from the VRL unit 100 into a video and audio signal, and a band pass filter 113 or tuner unit 112 And a video / audio signal processing unit 114 for processing the video and audio signals output from the video and audio signals, and outputting them to the display unit (not shown) and the speaker (not shown). 111) a channel key for selecting a specific channel, for example, 3 or 4 channels in Korea, 30 to 39 channels in Europe, and a key for overall control of the TV unit 110. phrase The second key input unit 115 and the reproduction signal received through the RF terminal 111 connected to the VRL unit 100 is provided to the band pass filter 113 or the RF terminal connected to the VRC unit 100 ( The second switching unit 116 for providing the broadcast signal received through the 111 to the tuner unit 112, and for watching the playback signal of the V-Cal unit 100 in accordance with the operation of the second key input unit 115. The second microcomputer 117 controls the second switching unit 116 to provide a reproduction signal received through the RF terminal 111 to the band pass filter 113 when the signal is input.

The following describes the operation of the RF output device having the AV switching function having the configuration as described above.

First, after the user loads the video tape on the VLC deck unit 102, the user switches the VLC mode by operating the first key input unit 103 of the VLC unit 100 and the second key input unit 115. When a specific channel is selected by using the control unit, the first microcomputer 105 controls the V Deck unit 102 to play the loaded video tape and to play the video tape loaded on the V Deck unit 102. The first switching unit 104 is controlled to output the reproduction signal according to the RF terminal 101. That is, the first switching unit 104 connects the RF terminal 101 to the V deck deck 102 under the control of the first microcomputer 105. In addition, the second microcomputer 117 controls the second switching unit 115 to output a signal input through the RF terminal 111 to the band pass filter 113.

Accordingly, the reproduction signal according to the video tape reproduction of the V-LC deck unit 102 is input to the RF terminal 111 of the TV unit 110 through the RF terminal 101 and the RF terminal 111 of the TV unit 110. The reproduction signal input to) is input to the band pass filter 113 through the second switching unit 116. The band pass filter 113 divides a reproduction signal input through the second switching unit 116 into an audio signal and a video signal, and provides the audio signal to the video and audio signal processing unit 114. The video and audio signal processing unit 114 The audio signal and the video signal input from the band pass filter 113 are signal processed and output to the speaker and the display unit.

According to the present invention, by directly outputting the playback signal reproduced on the video tape to the RF terminal without a modulation process and separated into a video and audio signal by the band pass filter 113 of the TV unit 110, playback reproduced on the video tape The interference of the broadcast signal generated during the modulation process of the signal can be reduced.

As described above, the present invention outputs a playback signal reproduced from a recording medium through an RF terminal without a modulation process and separates the playback signal output from the RF terminal into a video and audio signal by using a band pass filter. By omitting the playback signal from being affected by the broadcast signal, it is possible to provide a clear sound quality and image quality to the user.

1 is a block diagram illustrating a system to which an RF output apparatus capable of AV output according to the present invention is applied.

<Description of the code | symbol about the principal part of drawing>

100: VAL 101, 111: RF terminal

102: VR deck portion 103: first key input portion

104: first switching unit 105: first microcomputer

110: TV unit 112: tuner unit

113: band pass filter 114: video / audio signal processing unit

115: second key input unit 116: second switching unit

117: second microcomputer

Claims (1)

An RF device for connecting a first device for selectively outputting a broadcast signal and a reproduction signal reproduced from a recording medium and a second device for outputting a reproduction signal or broadcast signal provided from the first device to a display unit and a speaker, In the first device, A first switching unit for outputting only one of the broadcast signal and the reproduction signal to an RF terminal; A first microcomputer controlling the first switching unit to output only the reproduction signal by controlling the first switching unit when a signal for reproducing the recording medium is input; The second device, A tuner unit for tuning a broadcast signal output from the RF terminal of the first device to output a video and audio signal; A band pass filter for separating a reproduction signal output from the first device into a video and audio signal; A second switching unit providing a reproduction signal received through the RF terminal connected to the first device to the band pass filter, or providing a broadcast signal received through the RF terminal connected to the first device to the tuner unit; A second switch controlling the second switching unit to provide the band pass filter with a reproduction signal received through an RF terminal connected to the first apparatus when a signal for viewing a reproduction signal reproduced from the recording medium of the first apparatus is input; 2 microcomputer RF output device capable of AV output including a.