KR19980075525A - VC's Super Impose Automatic Switching Device - Google Patents

Abstract

The present invention relates to a V-seul superimposition automatic switching device suitable for automatically operating a super impose function in a V-Cal which has a built-in playback function of a VCD (video compact disc). Regarding the related art, VCD has a built-in playback function of a conventional technology, and the user may operate a predetermined key directly in order to operate the super impose function in V-CAL capable of executing super impose. In the present invention, VCD capable of executing a super impose with a built-in VCD playback function, when there is any one of a video according to TV broadcasting, an external video, and a video tape playback, the super impose It's easy to run the super impose function by letting the function Since it will be the right easy to improve the above drawbacks.

Description

VC's Super Impose Automatic Switching Device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a super impose automatic switching device of a video cassette recorder (VCR). In particular, the present invention relates to a VCD capable of executing a super impose. A V-real superimpose automatic switching device suitable for automatically operating a super impose function in a seed.

In this regard, in order to operate the super impose function in the VCD capable of executing the super impose by incorporating the playback function of the VCD according to the prior art, an image according to television broadcasting, an image from the outside, a video tape ( One image is selected from the images generated by the video tape, and the subtitles of the superimposed CD-G are reproduced to be displayed through a predetermined screen.

However, there is an inconvenience in that the user needs to directly operate a predetermined key in order to operate the super impose function in the VCD capable of executing the super impose due to the built-in VCD playback function according to the related art.

SUMMARY OF THE INVENTION The present invention has been made to solve such drawbacks of the prior art, and has a video broadcast, video from outside, and videotape in a V-CAL capable of executing a super impose by incorporating a VCD playback function. It is an object of the present invention to provide a V-seul superimposed automatic switching device that can automatically operate the super impose function when there is any one of the images according to the playback.

1 is a block diagram showing an embodiment of the V-seul super impose automatic switching device according to the present invention.

* Explanation of symbols on the main parts of the drawings *

10: tuning unit 12: intermediate frequency processing unit

14: switching unit 16: key input unit

18: microcomputer 20: synchronization detection unit

22: super impose processing unit 24: OSD processing unit

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention for achieving the above object is as follows.

Referring to FIG. 1, FIG. 1 is a block diagram showing an embodiment of an automatic switching device of V-Cal according to the present invention, and receives a plurality of television broadcast signals through a predetermined antenna to receive a specific frequency. A tuning unit 10 for tuning a television broadcast signal of an intermediate frequency, an intermediate frequency processing unit 12 for outputting a composite video signal by intermediate frequency processing of the television broadcasting signal tuned from the tuning unit 10, and an intermediate frequency processing unit. A switching unit which receives a composite video signal from (12), a composite video signal from the outside, and a composite video signal according to reproduction of a video tape for each terminal, and outputs any one of the composite video signals by a predetermined control signal. (14), a key input unit 16 for selecting a desired function of the VRC, and for operating the corresponding function of the VRL according to the selection of the key input unit 16; When the horizontal synchronization signal is detected in the composite video signal from any one of the composite video signal input terminals, the switching unit 14 checks each composite video signal input terminal. A micom 18 which outputs a video signal and turns on a super impose function, and a complex video signal output from the switching unit 14 is applied to detect a horizontal synchronization signal and notify the microcomputer 18 of the horizontal signal. The superimpose function is turned on under the control of the synchronization detector 20 and the microcomputer 18, and R, G, and B (red) by the composite video signal from the switching unit 14 and CD-G reproduction for the super impose are performed. super impose processing 22 for superimposing so that subtitles are superimposed on a corresponding image by receiving a green, blue) color signal, and an output of the super impose processing 22 by OSD (on screen display) processing OSD processing It comprises a portion 24.

The present invention made in this way is described in detail as follows.

First, the tuner 10 receives a plurality of television broadcast signals through a predetermined antenna to tune a television broadcast signal of a specific frequency according to a user's channel selection, and the intermediate frequency processor 12 receives the tuner 10 from the tuner 10. The composite television signal is output by intermediate frequency processing of the tuned television broadcast signal.

Next, the switching unit 14 receives the composite video signal from the intermediate frequency processing unit 12, the composite video signal from the outside, and the composite video signal according to the playback of the video tape for each terminal, and receives the control signal from the microcomputer 18. By outputting any one of the composite video signal, the user operates the desired key of the key input unit 16 to select the desired function of V-Cal.

Subsequently, the microcomputer 18 performs a control function to operate a corresponding function of the VRC according to the selection of the key input unit 16, and the switching unit 14 checks each composite video signal input terminal. When the horizontal synchronizing signal is detected in the composite video signal from the composite video signal input terminal, the switching unit 14 outputs the composite video signal, and the super impose on signal is applied to the super impose processing unit 22 to superimpose. Turn on the Woods feature.

The synchronization detector 20 receives the composite video signal output from the switching unit 14, detects the horizontal synchronization signal, and informs the microcomputer 18, and the super impose processor 22 is controlled by the microcomputer 18. The super impose function is turned on to receive the composite video signal from the switching unit 14 and the R, G, and B color signals generated by the CD-G playback for the super impose, and to superimpose the captions on the corresponding video. .

In addition, the OSD processing unit 24 OSD outputs the output of the super impose processing unit 22 so that a corresponding subtitle is superimposed on an image and displayed on a predetermined screen.

That is, when the superimpose mode is set in the microcomputer 18 by manipulating the keys of the key input unit 16, the superimpose function is automatically activated when any composite video signal is input to the switching unit 14. If not, you can manually select the superimpose function.

As described above, according to the present invention, any one of a video according to a television broadcast, an external video, and a video tape is played in a V-CAL capable of executing a super impose with a built-in VCD playback function. In this case, it is possible to automatically operate the super impose function by automatically operating the super impose function.

Claims (1)

A tuning unit 10 for receiving a plurality of television broadcast signals through a predetermined antenna and tuning a television broadcast signal of a specific frequency; An intermediate frequency processor (12) for intermediate-frequency processing the television broadcast signal tuned by the tuner (10) to output a composite video signal; The composite video signal from the intermediate frequency processor 12, the composite video signal from the outside, and the composite video signal according to the playback of the video tape are applied to each terminal, and any one of the composite video signals is controlled by a predetermined control signal. A switching unit 14 for outputting; A key input unit 16 for selecting a desired function of the VRC; According to the selection of the key input unit 16, a control function is performed to operate a corresponding function of V-Cal, and the switching unit 14 checks each composite video signal input terminal from any one composite video signal input terminal. A micom 18 for causing the switching unit 14 to output the composite video signal when the horizontal synchronization signal is detected in the composite video signal of the switch; A synchronization detector 20 which receives a composite video signal output from the switching unit 14 and detects a horizontal synchronization signal and informs the microcomputer 18 of the horizontal synchronization signal; The superimpose function is turned on under the control of the microcomputer 18 to receive the complex video signal from the switching unit 14 and the color signal of the CD-G playback for the superimpose, so that the subtitles are superimposed on the corresponding video. A super impose processing unit 22 performing super impose processing; And a OSD processing unit (24) for outputting the output of the super impose processing unit (22) by OSD (on screen display) processing.