KR19990026713A - Video storage device of TV - Google Patents

Abstract

The present invention relates to an apparatus for displaying stored video data on a screen of a television. More particularly, the user can reduce and store video data input through a tuner, an external device, or a digital input device on an index screen. The present invention relates to a storage image data display device for selecting a desired screen for viewing.

The storage video data display apparatus of the present invention includes a tuner (10) for receiving a radio signal transmitted through an antenna and tuning a specific broadcast station signal, and a received signal output from the tuner (10) for a video signal and an audio signal. In the television comprising a video processor 30 for outputting separately and the amplifier 32 for outputting the video signal output from the video processor 30 on the CRT 34, the tuner 10 An A / D converter 14 for converting the composite video signal outputted from the digital signal or the signal input from the external device 38 into a digital signal; An image storage unit 16 for storing the digital signal output from the A / D converter 12 and the signal from the digital input unit 40 input from the outside; A digital image processing unit 18 for modulating the image data stored in the image storage unit 16 into a required form; An image compressor 22 for compressing the image data processed by the digital image processor 18; A full screen storage unit 24 for storing the image output from the digital image processing unit 18 in full screen; A compression storage unit 26 for storing the compressed image data output from the image compression unit 22 and the index image synthesized by the mixer 28; And a D / A converter 30 for modulating the image data stored in the compression storage unit 26 and the full screen storage unit 24 into an analog signal and outputting the analog data to the video processor 30. .

Description

Video storage device of TV

The present invention relates to an apparatus for displaying stored video data on a screen of a television. More particularly, the user can reduce and store video data input through a tuner, an external device, or a digital input device on an index screen. The present invention relates to a storage image data display device capable of selecting a desired screen for viewing.

Thanks to digital data processing technology, televisions use a picture in picture (PIP) function to store an image input through a tuner and output an image stored on a television's CRT. In this case, the video recording sequence in the PIP function is processed by multiple screens in order of input, and then stored and outputted. Therefore, other signals other than TV broadcast signals, such as JPG, GIF, etc. Still images could not be saved. In addition, in the case of using a continuous image or two tuners, it is possible to store two broadcast signals, but there is a problem of being limited to the images that can be output.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to reduce and store image data input through a tuner, an external device, or a digital input device of a television on an index screen, and to be displayed by a user. The present invention provides a display device for storing stored video data.

The storage video data display apparatus of the present invention for achieving the above object is a tuner 10 for receiving a radio signal transmitted through an antenna to tune to a specific broadcast station signal, and the received signal output from the tuner 10 Is divided into a video signal and an audio signal and outputs a video processor 30 and an amplifier 32 for outputting the video signal output from the video processor 30 on the CRT 34. An A / D converter 14 for converting a composite video signal output from the tuner 10 or a signal input from an external device 38 into a digital signal; An image storage unit 16 for storing the digital signal output from the A / D converter 12 and the signal from the digital input unit 40 input from the outside; A digital image processing unit 18 for modulating the image data stored in the image storage unit 16 into a required form; An image compressor 22 for compressing the image data processed by the digital image processor 18; A full screen storage unit 24 for storing the image output from the digital image processing unit 18 in full screen; A compression storage unit 26 for storing the compressed image data output from the image compression unit 22 and the index image synthesized by the mixer 28; The apparatus further includes a D / A converter 30 for modulating the image data stored in the compression storage unit 26 and the full screen storage unit 24 into an analog signal and outputting the analog data to the video processor 30.

1 is a block diagram of a television including the storage image data display device of the present invention;

2 is an index screen according to the present invention;

3 is a flowchart showing an operating state of the display device of the present invention.

* Explanation of symbols for main parts of the drawings

10: tuner, 12: SAW filter,

14: A / D converter, 16: video storage,

18: digital image processing unit, 20: D / A conversion unit,

22: image compression unit, 24: full screen storage unit,

26: compressed storage, 28: mixer,

30: video processor, 32: amplifier,

34: CRT, 36,38: external device,

40: digital input, 42: microcomputer,

44: Remote control.

Hereinafter, a storage image data display device of a television of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of a television including a storage image data display device according to the present invention. As shown, an A / D converter 14 for converting a composite video signal output from the tuner 10 or a signal from an external device 38 into a digital signal; An image storage unit 16 for storing a digital signal output from the A / D converter 12 and a signal from a digital input unit 40 connected from the outside; A digital image processing unit 18 for modulating the image data stored in the image storage unit 16 into a required form; An image compressor 22 for compressing the image data processed by the digital image processor 18; A full screen storage unit 24 for storing the image output from the digital image processing unit 18 in full screen; A compression storage unit 26 for storing the compressed image data output from the image compression unit 22 and the index image synthesized by the mixer 28; And a D / A converter 30 for modulating the image data stored in the compression storage unit 26 and the full-screen storage unit 24 into an analog signal and outputting the same to the video processor 30.

The A / D converter 14 converts a composite video signal of analog type input from the tuner 10 of a television into a digital signal. In addition, an analog signal input from an external device 38 such as a VCR is also converted into a digital signal. Although the tuning process in the tuner 10 is not shown in detail, when the user selects a specific broadcast using the key input unit 42a, it is performed by a control signal from the microcomputer 42. In addition, the user may input a command to the microcomputer 42 by using the remote controller 44.

The image data modulated by the A / D converter 14 into the digital signal is stored in the image storage unit 16. The image storage unit 16 may directly input image data of a digital signal format through the digital input unit 40. The image storage unit 16 may be configured using a memory device such as DRAM, EPROM, etc., capable of storing digital signals, and may store photo-CD files, JPEG, and / or GIF files through the digital input unit 40. Can be. The image data stored in the image storage unit 16 is post-processed into digital image data that can be processed by the digital image processing unit 18.

The image data processed by the digital image processing unit 18 is stored in the full screen storage unit 24 for storing the entire screen, and is simultaneously input to the image compression unit 22 for compressing the digital image data. The image compression unit 22 compresses the digital image data according to a predetermined compression algorithm to reduce the size of the frame. Such a compression algorithm can be easily achieved by the prior art. It is desirable to obtain the maximum compression efficiency possible within the range that the compression size of the frame does not deteriorate the image quality.

The image data compressed through the image compression unit 22 is input to the mixer 28 and stored as an index screen. FIG. 2 shows an index screen according to the present invention, and it can be seen that four compressed video screens are shown, respectively, horizontally and vertically. The first compressed video data is stored in S11. Thereafter, the compressed and stored video data is sequentially stored in S12. The compression storage unit 26 is a medium for storing digital data, and may be, for example, a storage medium such as RAM or EPROM. Therefore, it will be apparent to those skilled in the art that the number of image data stored in the compression storage unit 26 can be further increased according to the capacity (memory capacity) of the compression storage unit 26.

Since the index picture formed by the mixer 28 is stored in the compressed storage unit 26 as a digital data type, it is converted into an analog signal by the D / A converter 20 for display on the CRT 34 of the television. . The signal converted by the A / D converter 20 is an analog television signal and is output to the amplifier 32 after being processed by the video processor 30.

After the amplifier 32 amplifies the signal of sufficient magnitude, the index screen is output to the CRT 34. The index screen output is essentially the same as that shown in FIG. When the index screen is displayed through the CRT 34, the viewer may select a specific screen using a remote controller or a key input unit (not shown). The compressed image output through the index screen may be image data input through the tuner 10, image data input through the external device 38, or image data input through the digital input unit 40. It will be apparent to those skilled in the art to which the invention pertains.

When the specific screen selected from the index screen is input to the microcomputer 42, the index screen 42 is removed from the CRT 34, and the full screen of the selected specific screen is output. This is accomplished by reading the frame data corresponding to the video screen selected by the user from among the frame data stored in the full-screen storage unit 24 and outputting the read data to the D / A converter 20. The full-screen storage unit 24 may also be a storage medium such as a RAM or an EPROM as a medium for storing digital data. The operating state of the present invention as described above is briefly described in the flowchart of FIG.

As described above, according to the present invention, the image data input through a tuner, an external device, or a digital input device of a TV is reduced and stored on an index screen, and the user can select a screen that he / she wants to view.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such variations or modifications will belong to the appended claims. .

Claims (3)

A tuner 10 for receiving a radio signal transmitted through an antenna and tuning a specific broadcasting station signal, and a video processor 30 for separately outputting a received signal output from the tuner 10 into a video signal and an audio signal, respectively. And an amplifier 32 for outputting the video signal output from the video processor 30 on the CRT 34, An A / D converter 14 for converting a composite video signal output from the tuner 10 or a signal input from an external device 38 into a digital signal; An image storage unit 16 for storing the digital signal output from the A / D converter 12 and the signal from the digital input unit 40 input from the outside; A digital image processing unit 18 for modulating the image data stored in the image storage unit 16 into a required form; An image compressor 22 for compressing the image data processed by the digital image processor 18; A full screen storage unit 24 for storing the image output from the digital image processing unit 18 in full screen; A compression storage unit 26 for storing the compressed image data output from the image compression unit 22 and the index image synthesized by the mixer 28; And And a D / A converter (30) for modulating the image data stored in the compression storage unit (26) and the full-screen storage unit (24) into an analog signal and outputting the analog data to the video processor (30). Storage image data display of TV. The apparatus of claim 1, wherein the external device (38) for inputting a signal to the A / D converter (14) is a VCR. The apparatus of claim 1, wherein the digital image data input to the image storage unit (16) is a photo-CD file, a JPEG, and / or a GIF file.