KR0176759B1 - Method and device for processing the caption of a vcr - Google Patents

Abstract

The present invention relates to a caption caption processing method and apparatus of a V-C. In the related art, a white level and a black level for caption display are simultaneously output, and thus caption captions cannot be processed in whole or in part by a black box. Accordingly, the present invention has been invented so that a user can arbitrarily process and restore a part or all of the subtitles into a black box by employing a subtitle masking function. It can be selected or processed into a black box or restored, which has the effect of improving the marketability. When the present invention is applied to language learning can maximize the effect.

Description

Method and device for caption caption processing

1 is a block diagram of a caption caption display device of a conventional VR.

2 is a waveform diagram of each part in FIG.

3 is a block diagram of a caption caption processing apparatus of a VR of the present invention.

4 is a detailed block diagram of FIG.

5 is an exemplary view showing a caption caption of the present invention.

6 is a signal flow diagram for caption caption processing of the present invention.

* Explanation of symbols for main parts of the drawings

11: data slice part 12: synchronous separation part

13: caption decoder 14: memory

15: caption control unit 16: key input unit

17: Title portion 131: Caption data processor

132: packet data processor 171: encoder

172: Mixer

The present invention relates to language learning in BD. In particular, when displaying a video and subtitles on a screen by playing a tape with a caption function, a part or all of the subtitles can be processed or restored into a black box. It relates to a caption caption processing method and apparatus of VRC to maximize the effect of.

FIG. 1 is a block diagram of a conventional caption caption display device of a BC-R, as shown in FIG. 1, a data slice unit 1 for outputting caption data by slicing a composite video signal Vi at a predetermined level, and a composite video signal ( And a synchronizing separator 5 for separating the vertical and horizontal synchronizing signals Vsyn (Hsyn) and the caption synchronizing signal Csyn, and the synchronizing signals Vsyn (Hsyn) of the synchronizing separator 5 (V). A caption decoder 3 for outputting a caption signal by extracting and decoding the 21st line of the odd field from the caption data of the data slice unit 1 according to Csyn) and the caption signal of the caption decoder 3 above; A title unit 1 mixed with the composite video signal Vi and a caption control unit 4 for transmitting and receiving data to and from the caption decoder 3 to control the caption processing operation of the title unit 1.

Referring to the operation of the conventional device as follows.

First, when a composite video signal Vi such as FIG. 2A in which a caption signal is loaded is input by a reproduction operation, the data slice unit 2 slices to a predetermined level to capture caption data as shown in FIG. 2B. The caption decoder 3 outputs the result.

In this case, the synchronization separator 5 that checks the composite video signal Vi as shown in FIG. 2A separates the horizontal and vertical synchronization signals Hsyn Vsyn and the caption synchronization signal Csyn from the caption decoder. 3) will be printed.

Accordingly, the caption decoder 3 determines the odd field in the caption data of the data slice unit 2 on the basis of the horizontal and vertical synchronizing signals Vsyn and Hsyn of the synchronizing separator 5 and the caption synchronizing signal Csyn. The caption signal is extracted by detecting the 21st line, and the caption signal is decoded to output the caption signal composed of the white level and the black level to the title unit 1.

Accordingly, the title unit 1 controls the caption decoder 3 to the composite video signal Vi as shown in FIG. 2A under the control of the caption control unit 4 performing data transmission / reception with the caption decoder 3. The caption signal is mixed and generated as a signal as shown in FIG. 2C, thereby displaying an image and a caption on a screen.

However, in the related art, a white level and a black level for caption display are simultaneously output so that caption captions cannot be processed in whole or in part by a black box.

Accordingly, the present invention adopts a subtitle masking function to improve a conventional problem, so that the user can arbitrarily process a part or all of the subtitles into a black box, thereby devising a language learning device of VSI. The purpose is to provide.

In order to achieve the above object, the present invention provides a method of determining whether the caption mode is a black box selection mode, and if the black box selection mode is performed, selecting a start point and an end point to process a subtitle as a black box; In step S, it is determined whether the black box mode is released unless the black box selection mode is performed. If the black box mode is released in this step, the black box processing operation of the caption is canceled and a general caption operation is performed.

In addition, the present invention for performing the above step is a means for slicing a composite video signal to a predetermined level to output caption data, means for separating the horizontal, vertical sync and caption sync signal from the composite video signal, the separation from the Means for detecting a caption signal by extracting a 21st line from the order field of the caption data based on the synchronized signal and converting the caption signal into a caption signal, and generating a column address according to a user's setting; And means for decompressing the caption signal to convert only the portion designated by the column address into blank data, and means for converting the decompressed caption signal into a video color signal and then mixing the mixed caption signal with a composite video signal.

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

According to an embodiment of the present invention, as shown in FIGS. 3 and 4, the data slice unit 11 for generating a caption data by slicing the composite video signal Vi to a predetermined level and then digitally converting the composite image signal Vi, and the composite A sync separator 12 for retrieving the image signal Vi and separating horizontal and vertical sync signals Vsyn (Hsyn) and caption sync signal Csyn; and a caption data processor 131 for the sync separator 12 Extracts the 21st line from the order field of the digital caption data Dcap of the data slice unit 11 based on the synchronizing signal Vsyn (Hsyn) (Csyn) of Converts the caption signal Scap into a caption signal Scap by temporarily decoding the data, and temporarily stores the caption signal Scap in the memory 14. The packet data processor 132 converts the caption signal Scap of the caption data processor 131 into an analog transform and decompresses the caption. The column address (Cadd) of the controller 15 The caption decoder 13 converts only a predetermined portion into blank data, and the caption decoder Tcap output from the caption decoder 13 by the encoder 171 into the image color signals R, G, and B, and the mixer 172. ), A black box mode is set in the title unit 17 and the key input unit 16 to mix the video color signals R, G, and B and the composite video signal Vi. The caption control unit 15 generates a column address Cad of a portion of the caption data processor 132 to be converted into a blank signal.

The key input unit 16 may be a switch on the front of the system or a remote controller.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

First, when the user sets the caption reproduction mode to the key input unit 16 and inputs a composite video signal Vi, which is an analog reproduced on a tape, the data slice unit 11 slices to a predetermined level to generate caption data, and then digitally After the conversion, the sync separator 12 searches the composite video signal Vi to separate horizontal and vertical sync signals Vsyn and Hcap from caption sync signals Csyn.

In this case, the caption decoder 13 may be configured to capture the digital caption data Dcap of the data slice unit 11 based on the synchronization signal Vsyn (Hsyn) Csyn of the synchronization separator 12. Search and extract the 21st line from the horizontal synchronizing signal (Hsyn) in the odd field, and generate and transmit the caption signal (Scap) by separating and decoding the caption signal of the ASCII code from the extracted 21st line. It is stored in the memory 14 to adjust the speed.

Subsequently, when the caption data processor 131 sequentially reads the captions (Scap) of several pages stored in the memory 14 and outputs them to the packet data processor 132, the packet data processor 132 performs analog conversion. Thereafter, the signal is extended to the original signal and stored in the internal memory, and at the same time, the extended caption signal Tcap is output to the title unit 17.

Accordingly, in the title unit 17, when the encoder 171 converts the caption signal Tcap of the caption decoder 13 into the video color signals R, G, and B, the mixer 172 adds the composite video signal Vi to the video signal Vi. Subtitles are displayed on an image displayed on the screen by mixing the image color signals R, G, and B of the encoder 171.

At this time, when the user sets the black box mode with the key input unit 16 and selects a range of all or a portion of the subtitle while viewing the subtitle displayed on the screen, the caption controller 15 generates a column address (Cadd) for the selected range. Let's go.

Accordingly, the packet data processor 132 of the caption decoder 13 converts the portion designated by the column address Cad of the caption control unit 15 among the caption signals stored in the internal memory into a blank signal and outputs it to the title unit 17. do.

Accordingly, when the encoder 171 generates the image color signals R, G, and B, the title unit 17 generates the caption signal Tcap whose entirety or part thereof is converted into a blank signal in the caption decoder 13. The subtitle displayed on the screen by mixing the composite video signal Vi and the video color signals R, G, and B of the encoder 171 is displayed as a part or all of the black box as shown in FIG.

When the user wants to view the caption displayed in the black box on the screen, the user sets the black box release by the key input unit 16.

In this case, when the black box release is set, the caption controller 15 outputs a control signal for releasing the black box to the caption decoder 13, and the packet data processing unit 132 stores the subtitle portion converted into a blank signal in the internal memory. The original subtitle signal is read back to restore the original subtitle signal.

Accordingly, when the caption signal Tcap reconstructed by the caption controller 15 is input to the title unit 17, the encoder 171 is converted into image color signals R, G, and B, and the mixer 172 composite video signals. By mixing with (Vi), the caption subtitle with the black box released is displayed on the screen.

The black box processing operation of the caption caption as described above will be described with reference to FIG.

First, it determines whether the black box mode is set when displaying images and subtitles on the screen by performing the tape play operation in caption mode.When the black box mode is selected, it is always determined whether the starting point for processing the subtitles as a black box is selected. Done.

At this time, if a start point to be processed by the black box is selected, it is determined whether an end point to end the black box process is selected again.

Accordingly, when the start point and the end point are selected while the black box mode is set, the column address for the selected part is generated, thereby converting the corresponding part into a blank signal so that the subtitles displayed on the screen are all or part of the black box. Is displayed.

Also, if the black box mode is not selected, the black box is determined to be off. If the black box is not selected, the black box is continued and the current caption operation is continued. The black box will be removed.

As described in detail above, in the caption mode, the user can arbitrarily select a part or the whole of the subtitle of the screen to process or restore the black box, thereby improving the merchandise.

When the present invention is applied to language learning, the learning effect can be maximized.

Claims (8)

A first step of determining whether or not to process the caption box when generating the caption signal from the caption signal; a second step of selecting a range of the corresponding part if it is determined by the box processing of the caption in the first step; Caption closed caption processing method of a V-C characterized in that it comprises a third step of not displaying a caption in a range on the screen. The method of claim 1, further comprising: displaying the subtitles again when the box processing is released. The method of claim 2, wherein only the boxed portion is released. The method of claim 1, wherein the box processing of the subtitles comprises: a first step of setting a start point for box processing of the subtitles, a second step of setting an end point for box processing of the subtitles, and A caption caption processing method of a V-CE comprising a third process of box-processing and displaying a caption in a set range. Means for slicing to a predetermined region of a composite video signal, means for separating horizontal, vertical, and caption sync signals from the composite video signal, and extracting a caption signal from the sliced caption data based on the separated sync signal. Means for decoding the signal, means for controlling the caption operation, and generating a range designation signal when the user sets the box processing range of the caption, and box processing the specified range when mixing the caption signal into a composite video signal. A caption caption processing apparatus for V-Cal comprising a mixing means. The apparatus of claim 5, further comprising a memory means for storing a caption signal generated by the decoding means. The caption data processor of claim 5, wherein the decoding means comprises: a caption data processor that separates the caption signal from the caption data by slicing based on the synchronization signal, decodes the separated caption signal, converts the caption signal into a caption signal, and temporarily stores the caption signal in a memory means; And a packet data processor for decompressing the caption signal of the caption data processor and box-processing a portion designated by the column address. 6. The apparatus of claim 5, wherein the means for mixing the video and the caption comprises a encoder for converting the boxed caption signal into a video color signal, and a mixer for mixing a composite video signal and the video color signal of the encoder. Seeal caption processing device.