KR100477426B1 - How to record and play back TV and its main scenes for unlimited playback of video and sound - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television for infinitely repeatable reproduction of video and audio and a video recording and playback method for main scenes of the television. A video signal processor for processing the composite video signal; An audio signal processor for processing the audio signal; A first switching unit coupled between the tuner unit and the video signal processing unit; A second switching unit coupled between the tuner unit and the audio signal processing unit; An analog-digital converter for converting each of the output signals of the video and audio signal processor into a digital signal and outputting the digital signal; A compression extension unit for compressing each of the digital signals of the analog-to-digital conversion unit or extending and outputting each of the compressed digital signals; A storage unit for storing the digital signals compressed by the compression extension unit; A digital-analog converter for converting the digital signals extended by the compression extension unit into analog signals and outputting the analog signals; And control the compression extension unit and the storage unit to enable the analog-to-digital conversion unit in response to a recording command, and store the digital signals compressed by the compression extension unit in the storage unit, and in response to the reproduction command. And a controller for enabling the digital-analog converter and controlling the first and second switching units to select signals output from the digital-analog converter.

Description

TV for infinite repetitive reproduction of video and sound and video recording and reproducing method for main scenes of TV

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television for infinitely repeatable reproduction of video and audio and a video recording and playback method for main scenes of the television. In particular, the present invention relates to a random access memory (RAM) capable of storing video and audio data. In the TV and the video recording and playback method of the main scene of the TV and the video for the infinite repetitive reproduction of the image and sound that can be recorded immediately after capturing the main scene of the TV program in an instant It is about.

In general, a television (TV) forms a system with a recording device, that is, a video player, and is frequently used for the purpose of recording a main program broadcasted on a television, such as a drama, a performance scene, and an educational program. Also, for this purpose, a video vision in which a television and a recording device are integrated is widely used.

In such a television system, a recording operation is not normally performed when a video tape is not attached to a recording apparatus. When a video tape is mounted, a recording function is selected by selecting a broadcast program to be recorded and operating a record button. Is performed. Here, the recording button is usually installed in the remote controller or the television system main body. Of course, the television system also performs the playback function, but the description of the playback function will be omitted here.

In general, when performing the recording function, it is often necessary to record moment scenes of about 3 to 5 minutes, for example, a scene of a singer, rather than recording the entire program. In a conventional television system, when a video tape is not mounted, the main broadcast program or the moment scenes desired to be recorded are skipped while the video tape is loaded and the recording button is pressed to perform the recording function. easy.

The object of the present invention is to immediately record the main scene of the television program using a random access memory (RAM) that can store video and audio data to solve the above problems, and to immediately record the scene of the recorded program And a television for infinitely repeatable reproduction of images and sounds that can be reproduced by repeating sound indefinitely, and a video recording and reproducing method for main scenes of the television.

In order to achieve the above object, a first apparatus of the present invention includes a tuner unit for receiving a broadcast signal and outputting a composite video signal and an audio signal; A video signal processor for processing the composite video signal; An audio signal processor for processing the audio signal; A first switching unit coupled between the tuner unit and the video signal processing unit; A second switching unit coupled between the tuner unit and the audio signal processing unit; An analog-digital converter for converting each of the output signals of the video and audio signal processor into a digital signal and outputting the digital signal; A compression extension unit for compressing each of the digital signals of the analog-to-digital conversion unit or extending and outputting each of the compressed digital signals; A storage unit for storing the digital signals compressed by the compression extension unit; A digital-analog converter for converting the digital signals extended by the compression extension unit into analog signals and outputting the analog signals; And control the compression extension unit and the storage unit to enable the analog-to-digital conversion unit in response to a recording command, and store the digital signals compressed by the compression extension unit in the storage unit, and in response to the reproduction command. And a controller for enabling the digital-analog converter and controlling the first and second switching units to select signals output from the digital-analog converter.

In order to achieve the above object, the second apparatus of the present invention includes a tuner unit for receiving a broadcast signal and outputting a composite video signal and an audio signal; A video signal processor for processing the composite video signal; An audio signal processor for processing the audio signal; A switching unit coupled between the tuner unit and the audio signal processing unit; An analog-digital converter for converting each of the output signals of the video and audio signal processor into a digital signal and outputting the digital signal; A compression extension unit for compressing each of the digital signals of the analog-to-digital conversion unit or extending and outputting each of the compressed digital signals; A storage unit for storing the digital signals compressed by the compression extension unit; A digital-to-analog converter for converting the digital signals extended by the compression extension unit into audio and video analog signals and outputting the converted audio signals; A small screen generator for generating a small screen video signal by a video analog signal output from the digital-analog converter; A mixing unit for mixing the video signal provided from the video signal processing unit and the small screen video signal provided from the small screen generation unit; And control the compression extension unit and the storage unit to enable the analog-to-digital conversion unit in response to a recording command, and store the digital signals compressed by the compression extension unit in the storage unit, and in response to the reproduction command. And a controller for enabling the digital-analog converter and controlling the switching unit to select one of an audio signal output from the tuner unit and an audio analog signal output from the digital-analog converter.

In order to achieve the above object, a third apparatus of the present invention includes a first tuner unit for receiving a first broadcast signal and outputting a composite video signal and an audio signal; A second tuner unit which receives a second broadcast signal and outputs a composite video signal and an audio signal; A video signal processor for processing the composite video signal; An audio signal processor for processing the audio signal; A first switching unit coupled between the first and second tuner units and the audio signal processing unit; An analog-digital converter for converting each of the output signals of the video and audio signal processor into a digital signal and outputting the digital signal; A compression extension unit for compressing each of the digital signals of the analog-to-digital conversion unit or extending and outputting each of the compressed digital signals; A storage unit for storing the digital signals compressed by the compression extension unit; A digital-to-analog converter for converting the digital signals extended by the compression extension unit into audio and video analog signals and outputting the converted audio signals; A small screen generator for generating a small screen video signal by a video analog signal output from the digital-analog converter; A second switching unit coupled between the second tuner unit and the small screen generation unit; A mixing unit for mixing the video signal provided from the video signal processing unit and the small screen video signal provided from the small screen generation unit; And controlling the compression extension unit and the storage unit to enable the analog-digital conversion unit in response to a recording command, to store the digital signals compressed by the compression extension unit in the storage unit, and in response to an audio selection command. Control the first switching unit to select one of audio signals output from the first tuner unit, the second tuner unit, and the digital-analog converter, and enable the digital-analog converter in response to a playback command, And a control unit controlling the second switching unit to select one of audio signals output from the second tuner unit and the digital-analog converter.

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

1 is a block diagram illustrating a television for infinitely repeatable reproduction of video and audio according to the present invention. As shown, a tuner unit 10 for receiving a broadcast signal and outputting a composite video signal and an audio signal is shown. A first signal coupled between the video signal processor 20 for processing the composite video signal, an audio signal processor 40 for processing the audio signal, and a tuner 10 and the video signal processor 20. Output signals of the switching unit 40, the tuner unit 10, the second switching unit 80 coupled between the audio signal processing unit 40, and the video and audio signal processing units 20 and 40 are digital signals. An analog-digital converter 100 for converting and outputting a roll, and a compression extension unit 120 for compressing each of the digital signals of the analog-digital converter 100 or extending and outputting each of the compressed digital signals; , The digital scene compressed by the compression extension unit 120 Storage unit 140 for storing the data, a digital-to-analog converter 160 for converting the digital signals extended by the compression extension unit 120 into analog signals, and outputting the analog signals; Enable the unit 140, control the compression extension unit 120 and the storage unit 140 to store the digital signals compressed by the compression extension unit 120 in the storage unit 140, and respond to the playback command And a controller 180 for enabling the digital-analog converter 160 and controlling the first and second switching units 60 and 80 to select signals output from the digital-analog converter 160. And a command input unit 200 for inputting the recording command and the playback command.

The analog-digital converter 100 converts an output signal of the video signal processor 20 into a digital signal, and converts an output signal of the audio signal processor 40 into a digital signal. And a second analog-to-digital converter 102 for outputting.

The digital-analog converter 160 includes a first digital-analog converter 161 that converts the video digital signal extended by the compressed extension unit 120 into an analog signal and outputs the analog signal. And a second digital-analog converter 162 for converting and outputting an audio digital signal into an analog scene.

Referring to the overall operation of the embodiment configured as described above are as follows.

1, when the desired broadcast channel is selected, the tuner unit 10 receives a broadcast signal of a corresponding channel, amplifies the received broadcast signal to a predetermined level, and then performs an intermediate frequency conversion process. As a result, the composite video signal and the audio signal are output.

On the other hand, since each of the first and second switching units 60 and 80 is switched to terminals a and c in a normal operation mode, that is, a mode for watching TV, the composite video signal output from the tuner unit 10 is a video signal processor. The audio signal transmitted from the tuner unit 10 to the audio signal processor 40 is transmitted to the audio signal processor 40.

Then, the video signal processing unit 20 processes the video signal by a predetermined signal processing process such as separation of a chrominance signal and a luminance signal, outputs a reproduced video signal to be reproduced as an image, and reproduces the reproduced video to reproduce the image. The signal is provided to the video player 220. On the other hand, the audio signal processor 40 processes the audio signal by a predetermined signal processing process such as detecting and amplifying the intermediate frequency signal of the voice and outputs a reproduced audio signal to be reproduced as voice and sound. The signal is provided to the audio reproducing unit 240. By doing so, the broadcast program selected by the viewers is reproduced through the TV receiver and the speaker.

In such a state, when the main scene is captured while the user is watching the broadcast program to record the main scene of the broadcast program according to an embodiment of the present invention, if the recording switch of the command input unit 200 is turned on, the command input unit ( In response to the recording command signal generated from 200, the controller 180 switches the mode from the normal operation mode to the recording mode.

As such, when the system of the present invention is switched to the recording mode, the controller 180 enables the first and second analog-to-digital converters 101 and 102 of the analog-to-digital converter 140. As a result, each of the first and second analog-to-digital converters 101 and 102 receives a reproduction audio signal and a reproduction video signal corresponding to the video and audio signal processing units 20 and 40 and converts the signals into digital signals. After that, the converted digital signal is provided to the compression extension unit 120 for data compression.

Subsequently, the compression extension unit 120 is controlled from the first and second analog-to-digital converters 101 and 102 by using a standard compression method such as MPEG-1, MPEG-2, H.261, etc. under the control of the controller 180. The digital signals of the video signal are compressed, and thus compressed video data and audio data are generated.

As such, when the compression extension unit 120 completes the compression, the compressed video and audio signals are respectively recorded in predetermined address regions of the storage unit 140 under the control of the controller 180.

As a result, the main moments of the broadcast program to be recorded are stored in the storage 140 in the form of video and audio data as soon as the viewer presses the record button without attaching the video tape to the recording apparatus.

According to an embodiment of the present invention, the storage unit 140 may use a RAM, which is a semiconductor memory having a size capable of storing broadcast programs of a predetermined time in the form of video and audio data. More specifically, the RAM includes a dynamic random access memory (DRAM) capable of temporarily storing data, and a random random access memory (SRAM) capable of permanently storing data even when the power is turned off. ). In addition, since the time required for a singer to sing one song in a broadcast program is about 3 to 5 minutes, the size of the RAMs is calculated based on this, but is not limited thereto.

In order to reproduce the main scene of the broadcast program recorded by the above operation according to an embodiment of the present invention, the user needs to turn on the playback switch provided in the command input unit 200. Once the playback switch is turned on, the controller ( 180 switches from the normal operation mode or the recording mode to the reproduction mode in response to the reproduction command signal generated from the command input unit 200. At the same time, the switches of the first and second switching units 60 and 80 are connected to the terminal b and Switch to switch to d.

When the system of the present invention is switched to the playback mode as described above, the controller 180 controls the compression extension unit 120 to read and decompress, decompress, and expand the video and audio data stored in the storage unit 140. The decoded video and audio signals are provided to the digital-to-analog converter 160, and then the controller 180 supplies the first and second digital-to-analog converters 161 and 162 of the digital-to-analog converter 160. Enable.

In this state, the first and second digital-to-analog converters 161 and 162 convert the analog and the analog signals corresponding to the video and audio signals decompressed by the compression extension unit 120, respectively. The first and second switching units 60 and 80 are provided to the video signal processing unit 20 and the audio signal processing unit 40, respectively. Thereafter, each of the converted analog signals is subjected to a predetermined signal processing by the video signal processing unit 20 and the audio signal processing unit 40, and then the video and audio are reproduced by the video reproducing unit 220 and the audio reproducing unit 240. Is reproduced as.

After the above-described reproducing operation is completed, the television system of the present invention returns to the beginning of the reproducing mode to perform the reproducing operation, thereby reproducing the recorded video and sound indefinitely.

FIG. 2 is a block diagram illustrating a television for infinitely repeatable reproduction of video and audio according to another embodiment of the present invention. The tuner unit 300 receives a broadcast signal and outputs a composite video signal and an audio signal as shown in FIG. And a video signal processor 310 for processing the composite video signal, an audio signal processor 320 for processing the audio signal, and a tuner 300 and an audio signal processor 320. Analog-to-digital converter 360 for converting each of the output signal of the switching unit 340, the video and audio signal processing unit (310, 320) to a digital signal, and the digital signal of the analog-to-digital converter 360 Compression extension unit 380 for compressing each of them, or to expand and output each of the compressed digital signals, a storage unit 400 for storing the digital signals compressed by the compression extension unit 380, and compression extension By part 380 A small-screen video signal is generated by the digital-to-analog converter 420 for converting the decoded digital signals into audio and video analog signals and outputting them, and the video-analog signals output from the digital-analog converter 420. A screen generator 440, a mixer 460 for mixing the video signal provided from the video signal processor 310 with the small screen video signal provided from the small screen generator 440, and an analog in response to a recording command. -Control the compression extension unit 380 and the storage unit 400 to enable the digital conversion unit 360, and to store the digital signals compressed by the compression extension unit 380 in the storage unit 400, and reproduced. In response to the command, the digital-analog converter 420 is enabled, and one of the audio signal output from the tuner 300 and the audio analog signal output from the digital-analog converter 420 is output. And to select a control unit 480 that controls the switching unit 340,

One of a recording switch for inputting the recording command, a playback switch for inputting a playback command for infinite repeat playback, an audio signal of the tuner unit 300 and an audio analog signal signal of the digital-to-analog converter 420. The apparatus further includes a command input unit 500 including an audio selection switch for selecting.

The analog-to-digital converter 360 converts an output signal of the video signal processor 310 into a digital signal, and converts an output signal of the audio signal processor 320 into a digital signal. And a second analog-to-digital converter 362 for outputting.

The digital-analog converter 420 may include a first digital-analog converter 421 for converting the video digital signal extended by the compression extension unit 380 into an analog signal and outputting the analog signal. And a second digital-analog converter 422 for converting an audio digital signal into an analog scene and outputting the same.

The storage unit 400 is a semiconductor memory having a size capable of storing broadcast programs for 3 to 5 minutes in the form of video and audio data.

Referring to the overall operation of the other embodiment configured as described above are as follows.

2, when the desired broadcast channel is selected, the tuner unit 300 receives a broadcast signal of a corresponding channel, amplifies the broadcast signal to a predetermined level, and then performs an intermediate frequency conversion process. As a result, the composite video and audio signals are output.

According to another exemplary embodiment of the present invention, since the switching unit 340 is switched to the terminal e in the normal operation mode, that is, the mode for watching TV, the composite video signal output from the tuner unit 300 is transferred to the video signal processing unit 310. The audio signal output from the tuner 300 is transmitted to the video signal processor 310.

Then, the video signal processing unit 310 processes the video signal by a predetermined signal processing process such as separation of a chrominance signal and a luminance signal, and outputs a reproduced video signal to be reproduced as an image. Provided to section 520. On the other hand, the audio signal processing unit 320 processes the audio signal by a predetermined signal processing process such as detection and amplification of the intermediate frequency signal of the voice, and outputs a reproduction audio signal to be reproduced as voice and sound. The signal is provided to the audio reproducing unit 540. By doing so, the broadcast program selected by the viewers is reproduced through the TV receiver and the speaker.

In this state, when the recording switch provided to the command input unit 500 is turned on by the user to record the main scene of the broadcast program according to another exemplary embodiment of the present invention, the user responds to the recording command signal generated from the command input unit 500. The control unit 480 switches the mode from the normal operation mode to the recording mode.

When the system of the present invention is switched to the recording mode as described above, the controller 480 enables the first and second analog-to-digital converters 361 and 362 of the analog-to-digital converter 360. As a result, each of the first and second analog-to-digital converters 361 and 362 receives a reproduction audio signal and a reproduction video signal corresponding to the video and audio signal processing units 310 and 320, and converts the signals into digital signals. After that, the converted digital signal is provided to the compression extension unit 380 to perform data compression.

Subsequently, the compression extension unit 380 uses the digital signals from the first and second analog-to-digital converters 361 and 362 using standard compression methods such as MPEG-1, MPEG-2, H.261, etc. under the control of the control unit 500. The signals are compressed and thus compressed video data and audio data are generated. When the compression is completed as described above, the compressed video and audio data are respectively recorded in predetermined address areas of the storage 140 under the control of the controller 480. As a result, the main instant scenes of the program to be recorded are stored in the storage 400 in the form of video and audio data as soon as the viewer presses the record button without attaching the video tape to the recording apparatus.

According to another embodiment of the present invention, the storage unit 400 may use a RAM, which is a semiconductor memory having a size capable of storing a broadcast program of a predetermined time in the form of video and audio data. More specifically, the RAM includes a dynamic random access memory (DRAM) capable of temporarily storing data, and a random random access memory (SRAM) capable of permanently storing data even when the power is turned off. ). In addition, since the time required for a singer to sing one song in a broadcast program is about 3 to 5 minutes, the size of the RAMs is calculated based on this, but is not limited thereto.

According to another embodiment of the present invention, in order to reproduce the main scene of the broadcast program recorded by the above operation, the user needs to turn on the playback switch provided in the command input unit 500. Once the playback switch is turned on, the controller ( 480 changes the mode from the normal operation mode or the recording mode to the playback mode in response to the playback command signal generated from the command input unit 500.

When the system of the present invention is switched to the playback mode as described above, the controller 480 reads and decompresses the video and audio data stored in the storage 400 and expands the decompressed video and audio signal. The compression extension unit 380 is controlled to provide the analog converter 420, and then the controller 480 controls the first and second digital-analog converters 421 and 422 of the digital-analog converter 420. Enable it.

In this state, the first and second digital-to-analog converters 421 and 422 convert the video and audio digital signals decompressed by the compression extension unit 380 into analog signals. The converted audio analog signal is provided to the audio signal processor 320, while the video analog signal is provided to the small screen generator 440.

According to another embodiment of the present invention, the first switching unit 340 is a switch is switched to the terminal e or f according to the operation of the audio selection switch provided in the command input unit 500, the tuner when the switch is switched to the terminal e The audio signal from the unit 300 is processed via the audio scene processing unit 320 and the audio reproduction unit 540 so that the audio signal of the currently received TV broadcast program is reproduced, while the switch 340 is When switching to the terminal f, the analog audio signal from the digital-to-analog converter 420 is processed via the audio scene processor 320 and the audio reproducer 540, so that the recorded audio signal is reproduced.

When the small screen generator 440 processes the video analog signal provided by the digital-analog converter 420 to provide a small screen video signal to the mixer 460, the mixer 460 may be a video signal. The playback video signal from the processing unit 310 and the small screen video signal from the small screen generation unit 440 are mixed so that the main screen and the small screen are overlapped and reproduced in the video playback unit 520. Here, the small screen means a screen reduced in proportion to a TV main screen having a prescribed aspect ratio, and is usually located at the edge of the TV main screen.

After the above-described reproducing operation is completed, the television system of the present invention returns to the beginning of the reproducing mode to perform the reproducing operation, thereby reproducing the recorded video and sound indefinitely.

As a result, in another embodiment of the present invention, the TV broadcast program to be listened to is displayed on the TV main screen and the recorded broadcast program is displayed on the small screen at the time of playback selection, so that both screens can be viewed simultaneously. Audio selection lets you selectively hear the sound of the screen you want to hear while playing on both screens.

FIG. 3 is a block diagram illustrating a television for infinitely repeatable reproduction of video and audio according to another embodiment of the present invention. As shown in FIG. 3, a first broadcast signal is received and a composite video signal and an audio signal are output. A first tuner unit 600, a second tuner unit 610 for receiving a second broadcast signal and outputting a composite video signal and an audio signal, a video signal processor 620 for processing the video signal, An audio signal processor 640 for processing the audio signal, a first switching unit 660 coupled between the first and second tuner units 600 and 610 and the audio signal processor 640, and a video and audio signal processor Analog-to-digital converter 680 for converting each of the output signal of the digital signal and outputs, and compresses each of the digital signals of the analog-to-digital converter 680, or to expand and output each of the compressed digital signals compression The book 700, the storage unit 720 for storing the digital signals compressed by the compression extension unit 700, and the digital signals extended by the compression extension unit 700 are converted into audio and video analog signals. A small screen generation unit 760 for generating a small screen video signal by the digital to analog converter 740 and the video signals output from the second tuner 610 or the digital to analog converter 740. And a second switching unit 780 coupled between the second tuner unit 610 and the digital-to-analog converter 740 and the small screen generator 760, and the video provided from the video signal processor 620. A mixing unit 780 for mixing the signal and the small-screen video signal provided from the small-screen generating unit 760 and the analog-digital converting unit 680 in response to the recording command, and the compression-extending unit 700. Compression to store the digital signals compressed by the storage unit 720 The audio signal output from the first and second tuner units 600 and 610 and the audio output from the digital-to-analog converter 740 are controlled in response to the book 700 and the storage unit 720 and the audio selection command. Control the first switching unit 660 to select one of the analog signals, enable the digital-analog converter 740 in response to the playback command, and the second tuner unit 610 and the digital-analog converter 740. A control unit 800 for controlling the second switching unit 780 to select one of the video signals output from the control panel, a recording switch for inputting the recording command, and a playback command for infinite repeat playback. A playback switch to select one of audio signals of the first and second tuner units 600 and 610 and an audio analog signal signal of the digital-to-analog converter 740, and a second tuner. And further comprising: a command input unit 820, including a small screen selection switch to select a video to analog sinhojung one analog converter (740) video signal and a digital unit 610.

The analog-digital converter 680 converts an output signal of the video signal processor 620 into a digital signal, and converts an output signal of the audio signal processor 640 into a digital signal. And a second analog-to-digital converter 682 for outputting.

The digital-analog converter 740 includes a first digital-analog converter 741 for converting the video digital signal extended from the compression extension unit 700 into an analog signal and outputting the analog signal, and the extension from the compression extension unit 700. And a second digital-analog converter 742 for converting and outputting an audio digital signal into an analog scene.

The storage unit 720 is a semiconductor memory having a size capable of storing broadcast programs for 3 to 5 minutes in the form of video and audio data.

Referring to the overall operation of another embodiment configured as described above are as follows.

In general, a picture-in-picture (PIP) function used in a television system refers to a function of displaying one main screen and superimposing the small screen main screen on which the aspect ratio is reduced compared to the main screen. Television systems employing this feature typically use two tuners to select different broadcast channels.

Referring to FIG. 3, according to another embodiment of the present invention, the first tuner unit 600 receives a desired broadcast signal and takes out a signal of a corresponding channel received when a desired broadcast channel is selected to amplify and convert an intermediate frequency. After performing the process, the composite image signal and the audio signal are output. In addition, the broadcast signal received by the first tuner unit 600 is reproduced on the main screen. Similarly, the second tuner 610 performs the same function as the first tuner 600, but the second tuner 610 is configured to reproduce the received broadcast signal on a small screen. 1 is different from the tuner unit 600.

According to another embodiment of the present invention, since the first switching unit 660 is switched to the terminal g in the normal operation mode, that is, the mode for watching TV, the composite video signal output from the first tuner unit 600 is a video signal. The audio signal transmitted to the processor 620 and output from the first tuner unit 600 is transmitted to the audio signal processor 640.

Then, the video signal processor 620 outputs a reproduced video signal obtained by separating the color signal and the luminance signal from the composite video signal of the first tuner 600 by a predetermined signal processing process. The reproduction video signal is applied to the mixing unit 780, but in the normal operation mode, the mixing unit 780 does not receive the signal to be mixed, and thus transfers the reproduced video signal to the video reproduction unit 840 as it is. Next, the video player 840 receives the playback video signal via the mixer 780 and reproduces the video.

On the other hand, the audio signal processor 640 performs a predetermined audio signal processing process such as detecting and amplifying the intermediate frequency signal of the voice and outputs the reproduced audio signal to be reproduced as voice and sound in the audio reproducing unit 860.

In this state, when the small screen selection switch provided in the command input unit 820 is turned on, the composite video signal output from the second tuner unit 610 is switched while the switch of the second switching unit 780 is switched to the terminal j. The small picture generation unit 760 then processes the composite video signal according to the small picture, and provides the small picture video signal generated therefrom to the mixing unit 780. . Then, the mixing unit 780 mixes the playback video signal from the video signal processing unit 620 and the small screen video signal from the small screen generation unit 760 so that the first broadcast program is displayed on the main screen in the video playback unit 840. At the same time, the first or second broadcast program is reproduced on the small screen.

Meanwhile, when the recording switch of the command input unit 820 is turned on to record the main scene of the broadcast program according to another embodiment of the present invention, the controller 800 responds to the recording command generated by the command input unit 820. Switch the mode to recording mode.

When switching to the recording mode as described above, the controller 800 enables the first and second analog-to-digital converters 681 and 682 of the analog-digital change unit 680. As a result, each of the first and second analog-to-digital converters 681 and 682 receives a reproduction audio signal and a reproduction video signal corresponding to the video and audio signal processing units 620 and 640, and converts the signals into digital signals. The converted digital signal is provided to the compression extension unit 700 so that data compression is performed later.

Subsequently, the compression extension unit 700 controls the first and second analog-to-digital converters 681 and 682 using standard compression methods such as MPEG-1, MPEG-2, H.261, etc. under the control of the controller 800. Compress digital signals from and generate the compressed video data and audio data. When the compression is completed as described above, the compressed video and audio data is recorded in a predetermined address area of the storage unit 720 under the control of the controller 800. As a result, the main instant scenes of the program to be recorded are stored in the storage unit 720 in the form of video and audio data as soon as the viewer presses the record button without attaching the video tape to the recording apparatus.

According to another embodiment of the present invention, the storage unit 720 may use a RAM, which is a semiconductor memory having a size capable of storing broadcast programs of a predetermined time in the form of video and audio data. More specifically, the RAM includes a dynamic random access memory (DRAM) capable of temporarily storing data, and a random random access memory (SRAM) capable of permanently storing data even when the power is turned off. Etc. In addition, since the time required for a singer to sing one song in a broadcast program is about 3 to 5 minutes, the size of the RAMs is calculated based on this, but is not limited thereto.

According to another embodiment of the present invention, in order to reproduce the main scene of the broadcast program recorded by the above operation, the user needs to turn on the playback switch provided in the command input unit 820. Once the playback switch is selected, the controller In response to the playback command signal generated from the command input unit 820, the mode 800 switches the mode from the normal operation mode or the recording mode to the playback mode, wherein the switch of the second switching unit 780 is switched to the terminal k. Switching. Additionally, the switch of the second switching unit 780 selects the composite video signal from the second tuner unit 610 and the analog video signal from the digital-analog converter 740 by the control of the control unit 800. To be switched.

On the other hand, the first switching unit 660 is switched to the terminals g, h, I according to the operation of the audio selection switch provided in the command input unit 820, suppose that it is switched to the terminal h in another embodiment of the present invention .

When the system of the present invention is switched to the playback mode as described above, the control unit 800 reads the video and audio data stored in the storage unit 720 to decompress, decompresses, and expands the decompressed video and audio signals. The compression extension unit 700 is controlled to be provided to the analog converter 740, and then the controller 800 receives the first and second digital-analog converters 741 and 742 of the digital-analog converter 740. Enable it.

In this state, the first and second digital-to-analog converters 741 and 742 convert the decompressed video and audio digital signals into the analog signals. The converted audio analog signal is provided to the audio signal processor 640, while the video analog signal is provided to the small screen generator 760.

Subsequently, when the small screen generator 760 processes the video analog signal provided by the digital-analog converter 740 to the small screen, and provides the small screen video signal to the mixer 780, the mixer 780 By mixing the playback video signal from the audio signal processing unit 620 and the small screen video signal from the small screen generation unit 760, the small screen is reproduced by being superimposed on the main screen in the video playback unit 840.

After the above-described reproducing operation is completed, the television system of the present invention returns to the beginning of the reproducing mode to perform the reproducing operation, thereby reproducing the recorded video and sound indefinitely.

As a result, in another embodiment of the present invention, the first broadcast program received on the TV main screen may be displayed, and the second broadcast program received on the small screen may be displayed at the same time, and the broadcast currently received upon playback selection may be displayed. By displaying the program on the main screen and the recorded broadcast program on the small screen, both screens can be viewed at the same time, and the audio selection function makes it possible to selectively listen to the sound of the screen to be listened to.

Therefore, as described above, in the present invention, by using a RAM capable of storing video and audio data, a user presses a recording switch to immediately capture a main scene of a broadcast program that is likely to pass by at a moment. Can be recorded, and the recorded scenes can be played again indefinitely.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram illustrating a television for infinitely repeatable reproduction of video and sound according to an embodiment of the present invention.

2 is a block diagram illustrating a television for infinitely repeatable reproduction of video and audio according to another embodiment of the present invention.

3 is a block diagram illustrating a television for infinitely repeatable reproduction of video and audio according to another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings.

10; Tuner section 20; Video signal processor

40; An audio signal processor 60; First switching

80; Second switching unit 100; Analog-to-digital converter

101; First analog-to-digital converter

102; Second analog-to-digital converter

120; Compression extension 140; Storage

160; Digital-to-analog converter 161; First digital-to-analog converter

162; Second digital-to-analog converter

180; A controller 200; Command input section

220; A video player 240; Audio player

Claims (19)

A tuner unit for receiving a broadcast signal and outputting a composite video signal and an audio signal; A video signal processor for processing the composite video signal; An audio signal processor for processing the audio signal; A first switching unit coupled between the tuner unit and the video signal processing unit; A second switching unit coupled between the tuner unit and the audio signal processing unit; An analog-digital converter for converting each of the output signals of the video and audio signal processor into a digital signal and outputting the digital signal; A compression extension unit for compressing each of the digital signals of the analog-to-digital conversion unit or extending and outputting each of the compressed digital signals; A storage unit for storing the digital signals compressed by the compression extension unit; A digital-analog converter for converting the digital signals extended by the compression extension unit into analog signals and outputting the analog signals; And Enable the analog-digital conversion unit in response to a recording command, control the compression extension unit and the storage unit to store digital signals compressed by the compression extension unit in the storage unit, and control the digital extension unit in response to a reproduction command. And a control unit for enabling an analog conversion unit and controlling the first and second switching units to select signals output from the digital-analog conversion unit. 2. The apparatus of claim 1, further comprising a command input unit including a recording switch for inputting the recording command and a playback switch for inputting a playback command for infinite repeat playback. TV. The method of claim 1, wherein the analog-to-digital converter is a first analog-to-digital converter for converting the output signal of the video signal processing unit to a digital signal, and the second to convert the output signal of the audio signal processing unit to a digital signal and output A television for infinite repetitive reproduction of video and audio, characterized by an analog-digital converter. The digital-to-analog converter of claim 1, wherein the digital-to-analog converter converts the video digital signal extended by the compression extension unit into an analog signal and outputs the analog signal; and the digital audio signal extended by the compression extension unit is analog. And a second digital-analog converter for converting and outputting an audio signal. 2. The television of claim 1, wherein the storage unit is a semiconductor memory having a size capable of storing a broadcast program for 3 to 5 minutes in the form of video and audio data. A tuner unit for receiving a broadcast signal and outputting a composite video signal and an audio signal; A video signal processor for processing the composite video signal; An audio signal processor for processing the audio signal; A switching unit coupled between the tuner unit and the audio signal processing unit; An analog-digital converter for converting each of the output signals of the video and audio signal processor into a digital signal and outputting the digital signal; A compression extension unit for compressing each of the digital signals of the analog-to-digital conversion unit or extending and outputting each of the compressed digital signals; A storage unit for storing the digital signals compressed by the compression extension unit; A digital-to-analog converter for converting the digital signals extended by the compression extension unit into audio and video analog signals and outputting the converted audio signals; A small screen generator for generating a small screen video signal by a video analog signal output from the digital-analog converter; A mixing unit for mixing the video signal provided from the video signal processing unit and the small screen video signal provided from the small screen generation unit; And Enable the analog-digital conversion unit in response to a recording command, control the compression extension unit and the storage unit to store digital signals compressed by the compression extension unit in the storage unit, and control the digital extension unit in response to a reproduction command. And a controller for enabling an analog converter and controlling the switching unit to select one of an audio signal output from the tuner unit and an audio analog signal output from the digital-analog converter. TV for unlimited repeat playback. 7. The apparatus of claim 6, further comprising: a recording switch for inputting the recording command, a playback switch for inputting a playback command for infinite repeat playback, an audio signal of the tuner section and an audio analog signal signal of the digital-analog converter section. And a command input unit including an audio selection switch for selecting. The method of claim 6, wherein the analog-to-digital converter is a first analog-to-digital converter for converting the output signal of the video signal processing unit to a digital signal, and the second signal for converting the output signal of the audio signal processing unit to a digital signal A television for infinite repetitive reproduction of video and audio, characterized by an analog-digital converter. The digital-to-analog converter of claim 6, wherein the digital-to-analog converter converts the video digital signal extended by the compression extension unit into an analog signal and outputs the analog signal, and the audio digital signal extended by the compression extension unit is analog. And a second digital-to-analog converter for converting and outputting to a scene. 7. The television of claim 6, wherein the storage unit is a semiconductor memory having a size capable of storing broadcast programs for 3 to 5 minutes in the form of video and audio data. A first tuner unit which receives the first broadcast signal and outputs a composite video signal and an audio signal; A second tuner unit which receives a second broadcast signal and outputs a composite video signal and an audio signal; A video signal processor for processing the composite video signal; An audio signal processor for processing the audio signal; A first switching unit coupled between the first and second tuner units and the audio signal processing unit; An analog-digital converter for converting each of the output signals of the video and audio signal processor into a digital signal and outputting the digital signal; A compression extension unit for compressing each of the digital signals of the analog-to-digital conversion unit or extending and outputting each of the compressed digital signals; A storage unit for storing the digital signals compressed by the compression extension unit; A digital-to-analog converter for converting the digital signals extended by the compression extension unit into audio and video analog signals and outputting the converted audio signals; A small screen generator for generating a small screen video signal by a video analog signal output from the digital-analog converter; A second switching unit coupled between the second tuner unit and the small screen generation unit; A mixing unit for mixing the video signal provided from the video signal processing unit and the small screen video signal provided from the small screen generation unit; And Enable the analog-digital converter in response to a recording command, control the compression extension unit and the storage unit to store digital signals compressed by the compression extension unit in the storage unit, and in response to an audio selection command Control the first switching unit to select one of an audio signal output from the first tuner unit, the second tuner unit and the digital-analog converter, enable the digital-analog converter in response to a playback command, and And a control unit controlling the second switching unit to select one of audio signals output from the second tuner unit and the digital-to-analog converter. One of a recording switch for inputting the recording command, a playback switch for inputting a playback command for infinite repeat playback, audio signals of the first and second tuner units and an audio analog signal signal of the digital-analog converter; And a command input unit including an audio selection switch for selecting a video signal, a small screen selection switch for selecting one of a video signal of the second tuner and a video analog signal of the analog converter. TV for repeatable reproduction of sound. 12. The apparatus of claim 11, wherein the analog-digital converter comprises: a first analog-to-digital converter for converting the output signal of the video signal processor into a digital signal; A television for infinite repetitive reproduction of video and audio, characterized by an analog-digital converter. The digital-to-analog converter of claim 11, wherein the digital-to-analog converter converts the video digital signal extended by the compression extension unit into an analog signal and outputs the analog signal, and the audio digital signal extended by the compression extension unit is analog. And a second digital-to-analog converter for converting and outputting to a scene. 12. The television of claim 11, wherein the storage unit is a semiconductor memory having a size capable of storing broadcast programs for 3 to 5 minutes in the form of video and audio data. A tuner unit for receiving a broadcast signal and outputting a composite video signal and an audio signal; A video signal processor for processing the composite video signal; An audio signal processor for processing the audio signal; A compression extension unit for compressing each of the video signal and the audio signal, or for expanding and outputting each of the compressed video and audio signals; A storage unit for storing the video and audio signals compressed by the compression extension unit; Control the compression expansion unit and the storage unit to compress the video and audio signals by the compression expansion unit and store the storage unit in response to a recording command; and store the compressed video and audio stored in the storage unit in response to a playback command. And a control unit for controlling the compression extension unit and the storage unit so as to extend a signal. 17. The apparatus of claim 16, further comprising: a small screen generation unit which receives a video analog signal extended from the compression extension unit and generates a small screen video signal; And a mixing unit for mixing the video signal provided from the video signal processing unit and the small screen video signal provided from the small screen generating unit. In the video recording and playback method for the main scene of the endless repeat TV, Compressing and storing a video signal and an audio signal of a main scene output from the tuner when a main scene is captured while watching a broadcast program and a recording command is generated from the outside by a user operating a recording switch; Reading and expanding the video signal and the audio signal for the compressed main scene when the video signal and the audio signal are being stored or when a playback command is input from the outside after the storage is completed; And displaying a video signal and an audio signal of the extended main scene on a screen. The method of claim 18, Generating a small picture video signal by receiving a video signal and an audio signal of the extended main scene; Mixing a video signal for a broadcast program output from the tuner and a small screen video signal in the main scene; And displaying a video signal of the mixed broadcast program on a main screen, and displaying a video signal of the main scene on a small screen. Way.

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