KR0133382B1 - Caption treatment systme in hi-fi vcr - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hi-fi VCR subtitle processing system, and further comprising: a subtitle head 34 provided in a voice control head for reading data recorded on an audio track of a video tape, and sensing predetermined data from the subtitle head 34. A data sensing unit 36 for encoding, an encoder unit 38 for encoding data read from the subtitle head 34 into OSD (on screen device) data, and an OSD for receiving subtitle data from the encoder unit 38. The OSD character generator 40 converts characters into video signals and outputs them to read the subtitle data recorded on the audio track to process the subtitles on the screen.

Description

Hi-Fi VCR Subtitle Processing System

1 is a schematic perspective view showing the mechanism of a video tape traveling mechanism,

2 is a diagram showing a track configuration of a video tape.

3 is a diagram for explaining an audio three-layer recording method of a hi-fi VCR.

4 is a block diagram of a caption processing system of a VCR according to the present invention;

5 is a perspective view showing a voice control head having a caption head according to the present invention.

* Explanation of symbols for main parts of the drawings

10: supply reel 12: magnetic tape

14: full width eraser 16: video head

18: head cylinder 20: voice mute head

22: voice control head 24: rewind reel

26: audio track 28: video track

30: control track 32: hi-fi audio head

34: caption head 36: caption data detection unit

38: encoder portion 40: OSD character generator

42: voice head 44: control head

46: memory

The HQS invention relates to a Hi-Fi VCR. In particular, the VCR records data about a subtitle in a normal audio track in a VCR, and reads it into a separate subtitle head provided in the voice head to process the subtitle through an OSD device. A subtitle processing system of a Fi VCR.

In the head structure of the conventional VHS VCR, as shown in FIG. 1, the magnetic tape 12 supplied from the supply reel 10 of the video tape magnetizes the magnetic direction of the tapes in the recording mode in a certain direction. After passing through the full-width erasing head 14, the head drum 18 having a plurality of video heads 16 for reproducing or recording the video signal is passed through the Ω winding, and then the voice control head 20 is passed through the voice erasing head 20. It passes through the head 22 and is wound around the rewinding reel 24.

At this time, the format of the tape by the fixed head recording method as described above is provided with an audio track 26 at the top, and an image track 28 is inclined at the top, as shown in FIG. And a control track 30 for recording address data.

However, in the fixed head method, the audio signal is recorded on the tape separately from the video signal in the form of a bias signal. However, in the hi-fi audio method, the FM signal is FM-modulated by a method similar to FM broadcasting. As described above, using a rotating head 22 such as a video head 16 for recording a video image signal, the magnetic field is recorded at a high frequency in a strong magnetic field on the tape, and then the image signal is recorded with a smaller magnetic field. The part becomes the video signal recorded later, and the audio signal exists as the erasure remaining part in the deep part.

That is, in the hi-fi VCR which records the audio signal by superimposing the video signal on the deep portion, the audio signal is kept blank without recording the separate audio signal on the normal audio track.

Accordingly, an object of the present invention is to provide a subtitle processing system of a Hi-Fi VCR which records the caption data digitally in the audio track left behind and processes the recorded digital signal into the caption data of the video.

According to an aspect of the present invention, a caption head provided in a voice control head for reading data recorded on an audio track of a videotape, a data sensing unit for sensing predetermined data from the caption head, And an encoder unit for encoding data read from the caption head into OSD (on screen device) data, and an OSD character generator for receiving caption data from the encoder and converting OSD characters into video signals and outputting the caption data. do.

According to the present invention having the above-described configuration, caption data is recorded on an audio track of a video head recorded in a hi-fi VCR method, and the caption data is converted into a video signal by converting the video signal using an OSD character generator. Will print.

Therefore, it is possible to process subtitles without a separate device by using an audio track remaining as an empty space as a subtitle track.

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

4 is a block diagram of a subtitle processing system of a hi-fi VCR according to the present invention, which includes a subtitle head 34 provided in a voice control head for reading data recorded in an audio track of a video head, and the subtitle head 34. A data detecting unit 36 for detecting predetermined data from the encoder; an encoder unit 38 for encoding data read from the subtitle head 34 into on-screen device (OSD) data; and the encoder unit 38. It is characterized by consisting of the OSD character generator 40 to receive the subtitle data from the OSD character is converted into a video signal and output.

Here, the caption head 34 reproduces the caption data recorded on the audio track of the hi-fi VCR. As shown in FIG. 5, the audio control head 22 outputs the audio signal from the normal VCR video tape. A voice head 42 capable of reproduction or recording is provided, and a control head 44 for recording or reproducing a control signal is provided below, and the subtitle head 34 is flush with the voice head 42. It is located adjacent to and can read audio track data.

The encoder 38 operates by on / off control signals of the subtitle system to encode the subtitle data read from the subtitle head 34 into OSD data and transmit the encoded subtitle data to the OSD character generator 40.

The OSD character generator 40 receives caption data input from the encoder 38 and various OSD data and outputs them as a video signal to display characters on the screen by synthesizing them with video signals of a separate image signal processor. It is.

The operation of the present invention configured as described above will be described.

When the tape inserted in the deck is recorded in the hi-fi deep recording method, the VCR turns off the voice head 42 and operates the subtitle head 34 to read the subtitle data into the audio track.

Subsequently, the OSD encoder 38 converts the caption data read from the caption head 34 into OSD data with reference to the lock table stored in the memory 46 to display OSD text along with the OSD data input to another input device. It is transmitted to the generator 40.

The OSD character generator 40 converts the input OSD data into a video signal and outputs the video signal to display the caption on the video screen.

The present invention records the subtitle data using an existing unused audio track without the need for a separate device, such as installing an integrated circuit for a separate subtitle processing device. By using the device to process the caption, it is possible to easily implement the caption system.

In addition, unlike the existing caption device, it can be applied regardless of the type of broadcasting method such as NTSC method, PAL method, and the effect of viewing the screen even if the caption and the screen overlap.

What has been described above is merely a mere example in all respects, and should not be construed as limited thereto, and all modifications existing within the true spirit and scope of the present invention shall fall within the claims of the present invention.

Claims (1)

The caption head 34 provided in the voice control head for reading data recorded on the audio track of the videotape, the data sensing unit 36 for sensing predetermined data from the caption head 34, and the caption head. An encoder unit 38 which encodes the data read from the unit 34 into OSD (on screen device) data, and an OSD character that receives subtitle data from the encoder unit 38 and converts the OSD character into a video signal and outputs the subtitle data. Subtitle processing system of a hi-fi VCR composed of a generation unit (40).