KR200159618Y1 - Audio/video signal monitor output apparatus for television - Google Patents

Abstract

The present invention relates to an A / V output signal monitor output device of a television, the configuration of which consists of a plurality of composite video signals (TV broadcast signals according to a plurality of channels of PIP playback targets tuned by a plurality of tuners (4, 6)). PIP playback is performed by separating the CV1 and CV2 and the voice signals A1 and A2, and the satellite broadcast signal of the satellite broadcast channel tuned through the BS tuner 22 is converted into the luminance signal Y and the color signal through the BS converter 24. (C) and a satellite broadcasting reception television having a PIP playback function to be processed and reproduced as an audio signal A3, comprising: a plurality of composite video signals CV1 and CV2 and audio signals A1 and A2 for PIP playback; ) And switching for PIP playback and satellite broadcast playback by receiving color signal (C), luminance signal (Y), and voice signal (A3) according to the satellite broadcast signal, and using separate external monitor means and external speakers. Switching switching to enable video / audio playback selectively A / V mode switching unit 26 and the single or multiple color signals CO1 and CO2 and luminance signals YO1 and YO2 applied by switching switching of the A / V mode switching unit 26 are respectively buffered. A plurality of Y / C separated image output buffers 28 to 31, Y / C separated image output terminals 32 to 35, and the A / V mode switching unit which are output to a plurality of Y / C separated processing type external monitor means A plurality of composite image type image output buffers 38 and 39 for buffering single or multiple composite image signals CVO3 and CVO4 applied according to the switching switching of (26) and outputting them to the multiple image type external monitor means; A plurality of audio signals A01, A02 and A03, which are selectively applied by the switching switching operation of the composite video type video output terminals 40 and 41 and the A / V mode switching unit 28, are buffered. Audio output buffers 42 to 44, audio output terminals 45 to 47, and the A / V mode switching unit 26 outputted to the external speaker side. In addition to switching switching for PIP reproduction and satellite broadcasting reproduction, a function setting unit 48 for setting a switching switching state for separate reproduction through an external monitor means and an external speaker, and the function setting unit 48 It is characterized in that it comprises a microcomputer 50 for applying the control data (DATA) and the clock (CK) for the selective switching switching of the A / V mode switching unit 26 according to the key setting state.

Description

TV's A / V output signal monitor output device

The present invention relates to an A / V output signal monitor output device of a television, and more particularly, in an A / V switching operation of a television capable of tuned reproduction of a television broadcasting channel and a satellite broadcasting channel of a VHF and UHF broadcasting system. The present invention relates to an A / V output signal monitor output device that enables playback output of broadcast signals of television broadcast channels and satellite broadcast channels through external speakers and monitor means.

Conventionally, in a conventional television, a television station is allocated in the form of airwaves from a television station assigned a predetermined broadcast channel among 12 channels of a VHF band having frequencies of 90 to 108 MHz and 170 to 222 MHz and 50 channels of a UHF band having a frequency of 470 to 770 MHz. Multiple channels can be tuned through the VHF / UHF receiving tuner. In such a television, a single broadcasting channel is tuned and played on the main screen. To solve this problem, a PIP (Picture In Picture) playback function is provided that employs a plurality of tuners to simultaneously tune a plurality of channels and simultaneously reproduce broadcast signals corresponding to the selected multiple channels on a plurality of main screens and sub-pictures. It is developed and adopted.

On the other hand, in such a television having a PIP playback function, for example, up to 2 to 8 sub-screens can be formed on a single main screen. In such a case, two or more tuners are configured to play the main screen through one side tuner. A plurality of sub-pictures can be reproduced as a moving picture or a still picture through the image processing operation of each sub-screen image processing means by switching the plurality of broadcast channels through the tuner of the other side while tuning the target channel. To make it work.

In addition, a satellite broadcasting transmission system has been developed that reproduces a satellite broadcasting method using a broadcast satellite or a communication satellite. In the case of such a satellite broadcasting transmission system, a carrier signal as a synthesized signal is multiplexed by multiplexing a video signal and an audio signal. When the video signal band is 4.5MHz, the PCM processing of the 1.3MHz band audio signal is performed by quadrature phase shift keying (QPSK) with a 5.727272MHz voice carrier and multiplexed onto the video signal. In addition, FM modulation of the 12 GHz band is carried out at a frequency shift of 17 MHz for video and 6,5 MHz for audio, so that it can be transmitted from the earth station to 14 GHz. It can be sent as it is.

In a receiver for receiving such a satellite broadcast signal with an appropriate sensitivity, a parabolic antenna for receiving a SHF frequency signal of 3 to 13 GHz with a good sensitivity is provided, and a radio wave signal received from the parabola antenna is set at a frequency of 1/10. Low Noise Block-Down Converter (LNB) is provided as a low noise and low amplifying converter, and the TV tuner side converts a low noise and low amplified satellite broadcasting signal into a predetermined broadcasting channel through the LNB to convert a video / audio signal. It is supplied to the processing means to be renewable.

On the other hand, televisions equipped with the PIP playback function and the satellite broadcasting playback function adopt an IIC bus-type video / audio switching switching IC such as Sony's model name 'CXA1845Q', for example, to receive serial data from a control means such as a microcomputer. (SDA) and serial clock (SCL) are applied to switch the switching operation for video / audio playback of the tuned satellite broadcasting channel along with the main / sub switching of video / audio signals for multi-screen playback. .

However, in a television equipped with the PIP playback function and the satellite broadcast playback function, the main / sub switching switching and the satellite broadcasting channel of the video / audio signal of the television broadcast tuned from a plurality of tuners using the video / audio switching switching IC are used. The switching switching operation for video / audio playback is performed through video / audio signal processing by video / audio processing means (i.e., Chroma IC / Audio Processing IC) built in the television itself. Because it provides a signal path that can be reproduced through the CRT screen and the speaker (or remote phone) of the TV, the television of a plurality of VHF or UHF broadcasting bands tuned for multi-screen or satellite broadcasting from the television. It is not equipped with a switching function that can separate the broadcast signal or the satellite broadcast signal to play separately through a separate monitor means and an external speaker.

At this time, in the television with the multi-screen playback function and the satellite broadcast playback function, an additional monitor means and an external speaker are additionally connected to each other so that the external playback by the switching of the TV broadcast signal or the satellite broadcast signal of the VHF / UHF broadcasting band is performed. This is necessary.

Accordingly, the present invention has been made in view of the above circumstances, and the television broadcast signals according to the television broadcasting channel and the satellite broadcasting channel of the UHF / VHF band are selectively displayed by the external speaker and the monitor means by the A / V switching operation. It is an object of the present invention to provide an A / V output signal monitor output device of a television which enables audio output.

According to the A / V output signal monitor output apparatus of a television according to the present invention for achieving the above object, the intermediate frequency is transmitted through a plurality of image IF unit for a television broadcast signal according to a plurality of channels of the PIP playback target tuned by a plurality of tuners Amplify and separate PIP playback by separating multiple video signals and audio signals through a plurality of video / audio detectors, and the satellite broadcasting signals of the satellite broadcasting channels tuned through the BS tuner are converted into a luminance signal through the BS converter. And a satellite broadcasting reception television having a PIP playback function to be processed and reproduced as a chroma signal and a voice signal, wherein the plurality of composite video signals and the luminance and color signals according to the audio and satellite broadcast signals for the PIP playback are reproduced. Switching for PIP reproduction and satellite broadcasting reproduction by receiving signal and voice signal, and separate external monitoring means and external A / V mode switching unit that performs switching switching to enable video / audio reproduction selectively through a speaker, and buffers and outputs one or more color signals and luminance signals applied by switching switching of the A / V mode switching unit, respectively. Single or multiple color signals and luminance signals respectively connected to a plurality of Y / C split image output buffers and a plurality of Y / C split image output buffers and buffered through the plurality of Y / C split image output buffers. A plurality of Y / C split type video output terminals for supplying a signal to an external monitor means, and a plurality of composite video types for buffering and outputting a single or a plurality of composite video signals applied according to switching of the A / V mode switching unit A single output buffer, each of which is connected to a plurality of composite image type external monitor means and buffered through the plurality of composite image type image output buffers. Is a composite video type video output terminal for supplying a plurality of composite video signals to its external monitor means, and an audio output buffering and outputting a single or a plurality of audio signals selectively applied by a switching switching operation of the A / V mode switching unit. A voice output terminal connected to a buffer and a plurality of external speakers, respectively, and supplying a single or a plurality of audio signals buffered and output through the voice output buffer to the external speaker, PIP reproduction and satellite broadcasting reproduction of the A / V mode switching unit. A function setting unit for key setting a switching switching state for separate reproduction through an external monitor means and an external speaker, and a switching of the A / V mode switching unit according to the key setting state of the function setting unit, together with a switching switching for A / V output signal monitor of television with microcomputer to apply control data and clock for switching Provide an output device.

According to the present invention configured as described above, a plurality of tuners or tuners for satellite broadcasting tuning are provided in a television equipped with a tuner for tuning satellite broadcasting for reproducing satellite broadcasting in addition to having a plurality of tuners for performing the PIP playback function. The selected TV broadcast signal or satellite broadcast signal can be reproduced through a separate external monitor means and an external speaker through a separate external connection output terminal according to A / V switching switching.

1 is a block diagram showing an A / V output signal monitor output device of a television according to the present invention.

Explanation of symbols on the main parts of the drawings

2: receiving antenna, 4, 6: tuner,

8,10: image IF unit, 12, 16: image detector unit,

14, 18: voice detector, 20: satellite antenna,

22: BS tuner, 24: BS converter,

26: A / V mode switching unit, 28 to 31, 38, 39: video output buffer,

32 to 35, 40, 41: video output terminal, 36, 37: Y / C separation circuit,

42 to 44: audio output buffer, 45 to 47: audio output terminal,

48: function setting section, 50: microcomputer.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an A / V output signal monitor output device of a television according to the present invention. In the device of the present invention, reference numerals 4 and 6 denote a plurality of PIP playback from a microcomputer 50 described later. A first tuner and a second tuner for performing intermediate frequency conversion by selecting a corresponding broadcast channel from among a plurality of broadcast channels according to a plurality of VHF or UHF broadcast bands received by the channel tuning data of the receiver antenna 2; Denoted at 10 is a first and second video IF unit which respectively performs intermediate frequency amplification processing on the channel-selected intermediate frequency-converted multi-channel television broadcast signal.

Also, reference numerals 12 and 16 detect the television broadcast signals according to the plurality of channels subjected to the intermediate frequency amplification through the first and second image IF units 8 and 10 to separate the composite image signals CV1 and CV2, respectively. The first and second image detectors 14 and 18 denote first and second voice detectors for detecting the multi-channel amplified television broadcast signals and separating audio signals A1 and A2, respectively.

Further, reference numeral 22 denotes a BS tuner for tuning the satellite broadcast channel received by the satellite antenna 20 upon receiving channel tuning data for satellite broadcast channel tuning from the microcomputer 50, which will be described later. The BS converter outputs a color signal (C), a luminance signal (Y), and an audio signal (A3) through signal conversion of the satellite broadcasting signal of the satellite broadcasting channel.

Reference numeral 26 denotes a satellite from the BS converter 24 by receiving the composite video signals CV1 and CV2 and the audio signals A1 and A2 from the first and second image detectors 12 and 16. In the state where the color signal C, the luminance signal Y, and the audio signal A3 according to the broadcasting are applied, the control data DATA and the clock CK for switching switching control from the microcomputer 50 to be described later are applied. And switching to apply to the main / sub picture image processing side and the main / sub picture audio processing side for PIP reproduction and satellite broadcast reproduction according to the PIP reproduction, and composite video signal (CV1, CV2) and audio signal. (A1, A2) and the color signal (C) and the luminance signal (Y) and the audio signal (A3) according to the satellite broadcast is formed to be separately reproduced through a separate external monitor means and an external speaker A / V mode switching unit for performing switching switching for the same.

In addition, reference numerals 28 to 31 are applied to the color signal (CO1, CO2) and the luminance signal (YO1, YO2) applied by the selective switching switching of the A / V mode switching unit 26, respectively, A plurality of Y / C separated image output buffers which are buffered and output for signal amplification processing, and 32 to 35 are respectively connected to connection plugs which are installed at predetermined portions of the rear side of the television and are drawn from a plurality of external monitor means, A plurality of Y / C separated image output terminals for supplying color signals CO1 and CO2 and luminance signals YO1 and YO2 from the plurality of Y / C separated image output buffers 28 to 31 to the monitor means side.

Reference numerals 36 and 37 denote the plurality of Y / C separated types by separating the composite video signals CVO1 and CVO2 output by the mode switching operation of the A / V mode switching unit 26 into luminance signals and color signals, respectively. The first and second Y / C separation circuits output to the image output buffers 28 to 31 are shown.

Reference numerals 38 and 39 denote a plurality of outputting the composite video signals CVO3 and CVO4 output according to the mode switching operation of the A / V mode switching unit 26 by performing buffering processing for impedance matching and signal amplification, respectively. And a plurality of composite images, wherein 40 and 41 are respectively connected to a connection plug which is installed at a predetermined portion of a rear end of the television and is connected to a connection plug which is drawn from a monitor means for receiving and reproducing a composite image signal. A plurality of composite image type image output terminals for supplying composite image signals CVO3 and CVO4 from the type image output buffers 38 and 39 to the monitor means.

Also, reference numerals 42 to 44 denote a plurality of buffering operations for impedance matching and power amplification for the audio signals AO1, AO2, and AO3 applied according to the mode switching operation of the A / V mode switching unit 26, respectively. 45 to 47 are connected to a speaker for an A / V playback device or a separate speaker, respectively, to output the audio signals AO1, AO2, and AO3 from the plurality of sound output buffers 42 to 44, respectively. A plurality of audio output terminals supplied to the speaker side are shown.

In addition, reference numeral 48 is a matrix button unit provided in a predetermined portion of the remote control for the remote control or the main body of the main body, and separates the complex video signal and the audio signal according to the television broadcast and the luminance signal, the color signal and the audio signal according to the satellite broadcast separately Mode switching for playback via the monitor means and an external speaker refers to a function setting section that performs key operation.

Reference numeral 50 denotes an external monitor means for separately combining the composite video signal and the audio signal or the luminance signal, the color signal and the audio signal according to the television broadcast according to the key operation for mode switching of the function setting unit 48. And a microcomputer for generating control data DATA and a clock CK for controlling the mode switching operation of the A / V mode switching unit 26 to be separately reproduced through the external speaker.

Next, the operation of the present invention made as described above will be described in detail with reference to FIG. 1.

First, an external monitor means for introducing a signal to the plurality of Y / C split type video output terminals 32 to 35 and being reproduced with Y / C split type is connected, and to the plurality of composite video type video output terminals 40 and 41. In addition to the connection of an external monitor means for receiving a composite video signal and reproducing the screen, a plurality of external speakers are connected to the plurality of audio output terminals 45 to 47, respectively. In the case of performing a key operation to tune a predetermined satellite broadcast channel at the same time as the broadcast channel of the channel is tuned, the microcomputer 50 performs the first and second tuners 4 according to the function operation by the function setting unit 48. 6, a plurality of broadcast channels are simultaneously tuned, and a predetermined satellite broadcast channel is tuned through the BS tuner 22.

In this state, the first and second video IF units 8 and 10 are intermediate frequency amplified television broadcast signals of the intermediate frequency type simultaneously tuned to the first and second tuners 4 and 6. And the second video detectors 12 and 16 separate the composite video signals CV1 and CV2 from the intermediate frequency-amplified multi-channel television broadcast signal through a detection operation, and the first and second audio detectors. (14, 18) separates the audio signals (A1, A2) from the plurality of television broadcast signals through a detection operation and outputs them to the A / V mode switching unit (26).

At this time, the BS converter 24 processes the satellite broadcast signal according to the predetermined satellite broadcast channel tuned by the BS tuner 22 to the luminance signal Y, the color signal C, and the audio signal A3. It is separated and output to the A / V mode switching unit 26 side.

Then, the composite video signal CV1 and the audio signal A1 of the broadcast channel tuned from the first tuner 4, for example, by the key operation of the function setting unit 48 are reproduced through their CRTs and speakers. And the luminance signal Y and the color signal corresponding to the composite video signal CV2 and the audio signal A2 of the broadcasting channel tuned from the second tuner 6 and the satellite broadcasting channel tuned from the BS tuner 22. C) and the microcomputer 50 operate the mode of the function setting unit 48 when the key operation for mode switching is performed so that the audio signal A3 is reproduced and output separately through separate external monitor means and an external speaker. Recognizing the key operation state for switching, the control data DATA and the clock CK for controlling the mode switching operation of the A / V mode switching unit 26 are generated.

Accordingly, the A / V mode switching unit 26 receives the control data DATA and the clock CK from the microcomputer 50 from the first and second image detectors 12 and 16. Composite video signal CV1, CV2, audio signal A2 from first and second audio detectors 14, 18, luminance signal Y from BS converter 24, color signal C, and audio signal The signal path for A3 is provided, and the composite video signal is applied to its own video signal processing means and processed after the video signal is reproduced on its own CRT screen, and the audio signal A1 has its own audio. After the audio signal is applied to the signal processing means, the voice is reproduced through its own speaker.

Also, the composite video signal CV2 of the external output target is a composite video signal CVO3 or a composite video signal CVO4 output by the mode switching operation of the A / V mode switching unit 26. It is applied to the output buffer 38 or the image output buffer 39 and buffered and supplied to the external monitor means through the composite image type image output terminal 40 or the image output terminal 41.

On the other hand, the luminance signal (Y) and the color signal (C) from the BS converter 24 and the luminance signal YO1 and the color signal (CO1) or luminance signal (YO2) by the A / V mode switching unit 26 Y / C separated image output terminals 32 and 34 or image output terminals after being applied to and buffered as Y / C separated image output buffers 28 and 30 or image output buffers 29 and 31 as color signals CO2 ( 33, 35 is supplied to the external monitor means.

Further, the audio signal A2 according to the television broadcast tuned from the second tuner 6 and the audio signal A3 according to the satellite broadcast from the BS converter 24 are the A / V mode switching unit 26. Applied to the audio output buffer 42, the audio output buffer 43 or the audio output buffer 44 as the audio signal AO1, the audio signal AO2 or the audio signal AO3, respectively, Thereafter, it is selectively supplied to an external speaker through the voice output terminal 45, the voice output terminal 46 or the voice output terminal 47.

On the other hand, a mode switching is performed for reproducing the composite video signal CV2 through a Y / C separate type external monitor means for reproducing the composite video signal CV2 by receiving a luminance signal and a color signal by key operation of the function setting unit 48. In this case, the A / V mode switching unit 26 is mode switched by the microcomputer 50 to output the composite video signal CV2 as a composite video signal CVO1 or a composite video signal CVO2. The complex video signal CV2 is separated from the complex video signal CVO1 or the composite video signal CVO2 by the first Y / C separation circuit 36 or the second Y / C separation circuit 37. Are processed and buffered through the Y / C split image output buffers 28 and 30 or the image output buffers 29 and 31 and the Y / C split image output terminals 32 and 34 or the image output terminals 33 and 35 are processed. It is supplied to the external monitor means for reproducing the screen by introducing a signal separated by the luminance signal and color signal through It is playing surface.

According to the present invention made as described above, a single number of televisions can be reproduced by separate video / audio playback of the television broadcast signal or satellite broadcast signal selected from the television through a separate external monitor means and an external speaker in the television. Even though located in different spaces through the receiver, video / audio playback of multiple broadcast channels can be performed simultaneously through the connection of a separate monitor means and an external speaker, and thus, the viewing effect is maximized.

Claims (2)

Intermediate frequency amplification of a television broadcast signal according to a plurality of channels of a PIP playback target tuned by a plurality of tuners 4 and 6 through a plurality of image IF units 8 and 10 and a plurality of video / audio detectors 12 and 14. PIP playback is performed by separating the plurality of composite video signals CV1 and CV2 and the audio signals A1 and A2 through the channels 16 and 18, and the satellite broadcast signals of the satellite broadcast channels tuned through the BS tuner 22 In the television for satellite broadcasting reception having a PIP playback function to be processed and reproduced as a luminance signal (Y), a chroma signal (C) and an audio signal (A3) through a BS converter (24), PIP playback by receiving the plurality of composite video signals CV1 and CV2 and the audio signals A1 and A2 and the color signal C, the luminance signal Y, and the audio signal A3 according to the satellite broadcasting signal for PIP reproduction. And A / V mode switching unit 26 which performs switching switching for reproducing satellite broadcasting and performs switching switching for selectively reproducing video / audio through a separate external monitor means and an external speaker, A plurality of Y / C separated image output buffers for buffering and outputting single or multiple color signals CO1 and CO2 and luminance signals YO1 and YO2 respectively applied by switching switching of the A / V mode switching unit 26. (28-31), Single or plural color signals CO1 and CO2 and luminance signals connected to a plurality of Y / C separation type external monitor means and buffered and output through the plurality of Y / C separation type image output buffers 28 to 31, respectively. A plurality of Y / C separated image output terminals 32 to 35 for supplying YO1 and YO2 to the external monitor means; A plurality of composite image type image output buffers 38 and 39 for buffering and outputting single or multiple composite image signals CVO3 and CVO4 applied according to the switching switching of the A / V mode switching unit 26; Single or multiple composite video signals CVO3 and CVO4 connected to a plurality of composite image type external monitor means respectively and buffered through the plurality of composite image type image output buffers 38 and 39 as external monitor means. Composite video type video output terminal (40, 41), Voice output buffers 42 to 44 for buffering and outputting single or multiple voice signals A01, A02 and A03 selectively applied by the switching switching operation of the A / V mode switching unit 28, Voice output terminals 45 to 47, which are connected to a plurality of external speakers and supply one or more voice signals A01, A02, and A03, which are buffered and output through the voice output buffers 42 to 44, to the external speaker. ), A function setting unit 48 for setting a switching switching state for separate playback through an external monitor means and an external speaker, as well as switching switching for PIP reproduction and satellite broadcast reproduction of the A / V mode switching unit 26; , In accordance with the key setting state of the function setting unit 48 is provided with a microcomputer 50 for applying the control data (DATA) and the clock (CK) for the selective switching switching of the A / V mode switching unit 26 A / V output signal monitor output device of a television, characterized in that configured. According to claim 1, wherein the plurality of composite video signals (CVO1, CVO2) applied by the selective switching switching of the A / V mode switching unit 26 by Y / C separated each of the plurality of Y / C separated image A / V output signal monitor output device for a television, characterized by further comprising a plurality of Y / C separation circuits (36,37) applied to the output buffers (28 to 31).