KR100251483B1 - Tv having store/play function and their storing/playing method - Google Patents

Abstract

PURPOSE: A TV having a recording/reproduction function and a method thereof are provided not to use a separate VTR as an image saving method by converting a transmitted broadcasting signal into a digital signal and saving/reproducing the digital signal. CONSTITUTION: A multi-broadcasting signal is transmitted to a TV(S1). A control unit tunes a broadcasting frequency by controlling a tuner unit(S2). A user selects a mode he wants and inputs the mode to the control unit(S3). The control unit detects which mode is inputted in a TV(S4). An image signal processing unit processes a broadcasting signal through a scanning method corresponding to an image signal(S5). The image signal is displayed as an image screen(S6). In case a user inputs a saving mode(S7), a broadcasting signal is converted into a digital image signal(S8). The digital image signal is produced as a moving vector(S9) and is encoded as image data based on the moving vector(S10). The moving vector and image data are saved in a flash memory of a saving unit(S11). The control unit performs a shift control for a reproduction in case a reproduction mode is inputted(S12). The control unit detects whether encoded data are saved in the saving unit(S13) and outputs the moving vector and image data in case a reproduction mode is inputted(S14). A decoder decodes image data and recomposes data into an image signal(S15). The image signal is processed through a scanning method corresponding to a picture image (S16) and is displayed as an image screen(S17).

Description

TV having a recording / playback function and a recording / playback method thereof

The present invention relates to a TV having a recording / reproducing function (hereinafter, referred to as 'TV') and a recording / reproducing method thereof, and more particularly, to store a conventional broadcast signal by data compression so that it can be reproduced by data restoration. A TV having a recording / playback function and a recording / playback method thereof.

A television (television) is a device that transmits instantaneous images of moving objects or objects that are being moved by using radio waves or electric signals to remote locations without time delays. Is converted into an electric signal by an image pickup tube and transmitted to a wireless or wired transmission path, and the CRT reproduces the electric signal as an image. Current TV is a technology that implements natural colors (color TV) is applied, has been developed as a color receiver to receive the image signal including the color difference signal to reproduce the original color image. Recently, TVs capable of playing high quality images have been developed.

The principle of color TV is to decompose the color screen into three primary color video signals of red, green, and blue by color camera, and when it is properly combined and transmitted as a color video signal, the original three primary color video signals are extracted from the color video signal. It is to reproduce the color image with three primary colors. Broadcasting methods for viewing on such color TV are divided into NTSC system and PAL system.

Typically, such TVs receive a video signal transmitted from a broadcasting station and display it to a viewer, and there is no device for recording or reproducing a video after viewing. Thus, to compensate for this, a video tape recorder (VTR) is currently developed, which is designed to store video signals from the broadcasting station and play them back if desired, and accordingly, they need to have mutual compatibility. There is a sufficient relationship.

Looking at the operation of the TV and the VTR as shown in FIG. First, the user can selectively watch a broadcast program transmitted from a broadcasting station using the TV 1, and uses a recording system in which an output terminal of the TV 1 and an input terminal of the VTR 3 are connected by a transmission cable 2. To operate the VTR 3 so that a desired program is recorded on the magnetic recording tape while watching the TV 1. When the user operates the VTR 3 so that the reproduction video signal is transmitted from the magnetic recording tape on which the program is recorded to the TV 1, the recorded video content is displayed on the TV 1 screen.

However, since such a system requires another space for the VTR 3, the TV 1 and the VTR 3 are integrated, and even an integrated type with improved space utilization has been developed. Magnetic recording tape is inserted in 3), so the recording / reproducing of the desired program is performed immediately.

The present invention has been made to solve the above problems, and provides a TV having a recording / reproducing function and a recording / reproducing method thereof capable of converting a long time broadcast signal received into a digital signal, storing and reproducing the same. The purpose is.

1 is a front view showing a schematic combination of a device for recording a video using a TV and a VTR according to the prior art,

2 is a block diagram showing a TV having a recording / playback function according to the present invention;

3 is a flowchart illustrating a recording / reproducing method of a TV having a recording / reproducing function according to the present invention.

[Explanation of symbols on the main parts of the drawings]

11; Tuner section 12; A / D converter

13; MPEG encoder 14; Flash memory section

15; MPEG decoder 16; Image signal processor

17; Display unit 18; Control

19; Key input section

According to the present invention, there is provided a tuner unit for selecting and receiving any one broadcast signal from multiple broadcast signals, an A / D converter for converting a broadcast signal from the tuner into digital, and the digital converter. A data compression encoder for calculating a motion vector from the received broadcast signal and converting the digital broadcast signal into bitstream video data of I, B, and P frames based on the vector; and I, B, and P frames of the encoder. A storage unit for storing the bitstream video data and the motion vector, and extracting the bitstream video data of I, B, and P frames from the storage unit according to a reconstruction order based on the motion vector, and extracting the bits of each frame. A data restoration decoder for restoring stream video data, converting video data from the decoder into an analog video signal, and converting the analog video signal It is achieved by a TV having a recording / reproducing function including an image signal processing section for displaying and processing a signal in accordance with a private manner.

The apparatus may further include a controller configured to control the broadcast signal from the tuner to be displayed after being processed by the video signal processor in a predetermined scanning manner.

Here, the controller is configured to store bitstream video data of I, B, and P frames in the storage unit or to extract bitstream video data of I, B, and P frames from the storage unit by a user's selection. It is preferable to control any one of them. In addition, the control unit 18 preferably further includes a key input unit for supplying an input signal of a TV mode, a storage mode, and a reproduction mode.

According to another aspect of the present invention, there is provided, according to another aspect of the present invention, the step of selecting and receiving any one of the broadcast signal from the multiple broadcast signal, converting the broadcast signal to digital, and the motion vector from the digitally converted broadcast signal And encoding the digital broadcast signal into bitstream video data of I, B, and P frames based on the vector, and encoding the bitstream video data and the motion vector of the coded I, B, and P frames. Storing and retrieving the stored bitstream image data of the I, B, and P frames according to a reconstruction order based on a motion vector, reconstructing the bitstream image data of each of the extracted frames; Converting the video signal into an analog video signal, and displaying the analog video signal by processing the signal according to a specific scanning method. It is achieved by a recording / reproducing method of the TV having a recording / reproducing function.

The method may further include controlling the broadcast signal to be displayed by being processed by the video signal processor in a predetermined scanning manner.

Hereinafter, a TV having a recording / playback function and a recording / playback method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing a TV having a recording / playback function according to the present invention, and FIG. 3 is a flowchart showing a recording / playback method of a TV having a recording / playback function according to the present invention.

As shown in FIG. 2, the TV having the recording / reproducing function includes a tuner unit 11 for selecting and receiving any one broadcast signal from multiple broadcast signals and an analog signal from the tuner unit 11. And a display unit 17 for signal processing according to a specific scanning method for an image signal, and a display unit 17 for displaying an image according to the scanning signal from the image signal processing unit 16. An A / D conversion unit 12 for converting the broadcast signal from the unit 11 into digital, and calculating a motion vector from the digitally converted broadcast signal, and converting the digital broadcast signal into I, B based on the vector. MPEG encoder 13 for data compression converting to P-stream bitstream video data, and a storage unit for storing bitstream video data of I, B, and P frames and the motion vector of the encoder 13. ), And the storage The bitstream image data of the I, B, and P frames from the unit 14 is fetched according to the reconstruction order based on the motion vector, and the bitstream image data of each of the extracted frames is reconstructed and outputted to the image signal processor 16. And MPEG decoder 15 for data restoration. The video signal processor 16 converts video data from the decoder into an analog video signal in the playback mode, and then outputs the analog video signal to the display unit 17 by processing the analog video signal according to a specific scanning method. .

The storage unit 14 uses a flash memory capable of freely recording and erasing video data.

In addition, the TV having the recording / reproducing function includes a control unit 18 which controls the broadcast signal from the tuner unit 11 to be displayed by processing the signal by the video signal processing unit 16 in a predetermined scanning manner, and the control unit And a key input unit 19 for inputting a user selection mode such as a reception mode, a storage mode, and a playback mode of the user. The controller 18 allows the bitstream video data of I, B, and P frames to be stored in the storage unit by the user's selection, or the bitstream video data of the I, B and P frames from the storage unit is stored. Either of the MPEG encoder 13 or the decoder 15 to be drawn out is controlled. The tuner 11 changes the reception broadcast channel by a command of the controller 18 according to the channel selection signal of the key input unit 19.

The recording / reproducing method of the TV having the recording / reproducing function according to the present invention configured as described above is as shown in FIG. First, when a multicast signal of a broadcasting station is received by the TV through an antenna of a TV having a recording / playback function (S1), the controller 18 adjusts the tuner to receive a corresponding broadcast signal from a channel input through the key input unit 19. The control unit 11 controls the broadcast frequency (S2). Then, the user selects a desired mode through the key input unit 19 and inputs it to the control unit 18 (S3). Irrespective of such an operation, the controller 18 always detects which mode is input to the TV (S4) and waits for a user's mode selection or performs an operation of the corresponding mode.

If the TV mode is detected by the controller 18, the controller 18 controls the tuner 11 and the image signal processor 16 so that the broadcast signal tuned by the tuner 11 is transferred to the display 17. Image signal processing is performed so that an image is displayed immediately. That is, the video signal processing unit 16 separates the broadcast signal into a color difference signal and a luminance signal, and processes the broadcast signal in a scanning method suitable for the image signal (S5). The image signal is scanned by the display unit 17 and displayed on an image screen (S6). This means that the user is watching the program of the broadcasting station currently being broadcast in real time. The function as described above represents a typical TV viewing.

Here, when the storage mode is set through the reservation mode or the user inputs the storage mode to the controller 18 through the key input unit 19 (S7), the broadcast signal tuned by the tuner unit 11 is A / D. The converting unit 12 converts the digital video signal (S8), and the video signal is calculated by the data compression MPEG encoder 13 as a scene and a motion vector of the scene (S9), and based on the motion vector, I It is encoded into video data of B, P frames (S10). Here, the I frame is video data that can independently configure one screen, the P frame is video data that can configure a screen with the support of I frame, B frame is I, P frame It is video data that can compose one screen with support of.

The encoded motion vector and the image data of the I, B, and P frames are stored in the flash memory of the storage unit 14 under the control of the controller 18 (S11). Subsequently, when the storing is completed in this way and the regeneration mode is not inputted by the key input unit 19, the process ends immediately. However, if the playback mode is input through the key input unit 19 after the encoded compressed data is stored, the controller 18 performs operation control for playback (S12).

On the other hand, if the TV mode is operated and the broadcast signal is not displayed in the playback mode instead of the storage mode (S7), the control unit 18 detects whether the encoded compressed data is stored in the storage unit 14 (S13). ). If the compressed data stored in the storage unit 14 is stored, the above step 12 is performed. Otherwise, the display is completed to determine whether the display is completed, or the system is terminated or the video display is continued (S18 and S6).

Therefore, when a playback mode is input, the control unit 18 controls the storage unit 14 so that the MPEG decoder 15 for restoring the data can receive motion vectors from the storage unit 14 and images of I, B, and P frames. To retrieve the data (S14). At this time, the decoder 15 decodes the image data of the I, B, P frames according to the motion picture according to the extracted motion vector to reconstruct it into a video signal (S15). Subsequently, the video signal is separated into a color difference signal and a luminance signal by the video signal processing unit 16, and processed in a scanning method suitable for the image signal (S16), and then displayed on the video screen of the scanning method set in the display unit 17. (S17). The display until the display is completed (S19).

A TV having a recording / playback function as described above may reserve and record a broadcast program in a desired time zone, and may quickly and repeatedly view a desired scene of the broadcast program.

The present invention does not need a separate video storage means VTR because the TV itself is stored by compressing the data stored in the analog broadcast signal, so that it can be reproduced, it has the effect of improving the performance of the TV to the next level. In addition, the present invention has the effect of improving the user's satisfaction because the user can quickly record / play the desired broadcast.

Claims (6)

A tuner unit which selects and receives one broadcast signal from the multiple broadcast signals; An A / D converter converting the broadcast signal from the tuner into digital; A data compression encoder for calculating a motion vector from the digitally converted broadcast signal and converting the digital broadcast signal into bitstream video data of I, B, and P frames based on the vector; A storage unit for storing bitstream image data of the I, B, and P frames and the motion vector of the encoder; A data recovery decoder for retrieving the bitstream video data of the I, B, and P frames from the storage unit in a reconstruction order based on a motion vector, and for reconstructing the bitstream video data of each of the extracted frames; And a video signal processing unit which converts the video data from the decoder into an analog video signal, and displays the signal by processing the analog video signal in accordance with a specific scanning method. The method of claim 1, And a control unit which controls the broadcast signal from the tuner to be displayed after being processed by the video signal processor in a predetermined scanning manner. The method of claim 2, The controller may be configured to store bitstream video data of I, B, and P frames in the storage unit or to extract bitstream video data of I, B, and P frames from the storage unit by a user's selection. A TV having a recording / playback function, characterized in that which one is controlled. The method of claim 2, And a key input unit for supplying an input signal of a TV mode, a storage mode, and a reproduction mode to the control unit (18). Selecting and receiving one broadcast signal from the multiple broadcast signals; Converting the broadcast signal into digital; Calculating a motion vector from the digitally converted broadcast signal, and encoding the digital broadcast signal into bitstream video data of I, B, and P frames based on the vector; Storing bitstream image data and the motion vector of the encoded I, B, and P frames; Retrieving the stored bitstream image data of the I, B, and P frames according to a reconstruction order based on a motion vector, and reconstructing the bitstream image data of each of the extracted frames; Converting the image data into an analog image signal, and processing the signal to display the analog image signal in accordance with a specific scanning method. . The method of claim 5, And controlling the broadcast signal to be displayed after being processed by the video signal processing unit by a predetermined scanning method.

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