KR20000046153A - Apparatus for storing/playback caption information of caption televisions and method thereof - Google Patents

Abstract

PURPOSE: An apparatus for storing/playback caption information of caption televisions and a method thereof are provided to store caption information displayed on a screen. CONSTITUTION: An apparatus for storing/playback caption information of caption televisions includes a caption information storage(22), a backup battery(23) and a micro computer(21). The caption information storage(22) classifies and stores the caption information. The backup battery(23) supplies power to preserve the information in the caption information storage. The micro computer(21) stores the caption information in the caption information storage or reads the caption information from the caption information storage to display on a screen according to the user command.

Description

Caption information storage / playback device and method

The present invention relates to captions, and more particularly, to an apparatus and method for caption information storage / reproduction.

Captionive TV is a TV which displays composite video blanking signal (CVBS) that includes additional information or text information synchronized with voice for the hearing impaired, that is, a composite video signal through a series of signal processing. As shown in Fig. 1, the caption is provided from a tuner 1 for tuning / demodulating a broadcast signal, a Y / C separator 2 separating Y / C from an output of the tuner 1, and an output of the tuner 1; Signal processing to display caption information from the CVBS output from the synchronization signal separation unit 3, the microcomputer 4, the EEPROM 5, and the tuner 1, which separates the vertical / horizontal synchronization signals. The caption processing unit 7, the switching unit 6 for selectively switching the OSD signal of the microcomputer 4 and the output of the caption processing unit 7, the output of the switching unit 6, and the output of the Y / C separation unit 2. Image / deflection signal processing unit for image / deflection signal processing (8), CPT (Color Picture Tube) (9) .

At this time, the caption processing unit 7 extracts the caption information of the waveform as shown in FIG. 2 inserted in the 21st line of the Even Field of the composite video signal VBI (Vertical Blanking Internal) section and outputs the data in 2 byte units. 11), a caption decoder 12 for decoding the output of the data slicer 11 so that the control code and the character code can be displayed on the screen, and a font ROM / program that stores characters in RGB format, programs and data. The caption control unit 13 controls the data slicer 11, the caption decoder 12, and the font ROM / program ROM / data ram 14 according to the ROM / data RAM 14 and the control signal of the microcomputer 4. It is composed.

Looking at the operation of the caption cap is configured as follows.

First, the composite video signal tuned / demodulated through the tuner 1 is converted into a YUV signal by the Y / C separation unit 2 and supplied to the image / deflection processing unit 8, and is simultaneously vertical by the synchronization signal detection unit 3. The horizontal synchronization signal is separated and applied to the microcomputer 4.

Subsequently, the microcomputer 4 generates a corresponding OSD and outputs the OSD to the switching unit 6 according to the synchronization signal.

In addition, the caption processing unit 7 extracts the caption information from the data slicer 11 according to the control of the caption control unit 13 when the composite video signal including the caption information is input, and the caption decoder 12 characterizes the caption information. The code and control code are decoded and output to the switching unit 6.

In this case, the control code defines a position designation code for designating a position to be displayed on the screen, a caption mode such as continuous, instantaneous, up, and down, a text color, a background color, and a text attribute.

Accordingly, the switching unit 6 selectively switches the OSD and caption information output from the microcomputer 4 under the control of the microcomputer 4, and inputs the image / bias processing unit 8 to the image / biasing processor 8. The input data is processed by image / deflection signal and displayed on the CPT (9).

Captionive according to the prior art displays the caption information transmitted from the broadcasting station on the screen, which is only a momentary display, sometimes can not be stored separately even if the data required by the user does not meet the needs of the user There is a problem.

Accordingly, an object of the present invention is to provide a caption information storage / reproducing apparatus and method for caption TV that can be reproduced by storing caption information displayed on a screen if necessary.

1 is a block diagram showing the configuration of a caption tee according to the prior art

2 is a waveform diagram showing a closed captioning signal included in a composite video signal;

Figure 3 is a block diagram showing the configuration of the caption tee according to the present invention

4 is a flowchart illustrating a method of storing caption information of captions according to the present invention.

5 is a diagram illustrating an example of caption information classification of FIG. 4;

6 is a flowchart showing a method for reproducing caption information of captions according to the present invention.

* Description of the symbols for the main parts of the drawings *

1: tuner 2: Y / C separation

3: Sync signal separator 5: EEPROM

6: switching unit 7: caption processing unit

8: Image / deflection processor 9: CPT

11: data slicer 12: caption decoder

13: Caption control unit 14: Font ROM / Program ROM / Data

21: micom 22: caption information storage unit

23: backup battery

The caption information storage / playback apparatus according to the present invention includes a caption information storage unit for classifying and storing caption information for each field, a backup battery for supplying power for information storage of the caption information storage unit, and user caption information storage. And a microcomputer to store the caption information displayed on the screen in response to the / play command or read from the caption information storage unit and display the caption information on the screen.

According to the present invention, there is provided a method for storing / playing caption information, including: caption information storage unit and a microcomputer; determining a storage mode and a classification mode when a caption storage command is input; Capturing the caption information displayed on the screen, classifying it into a corresponding classification mode, and storing the caption information in a caption information storage unit; determining a classification mode and a display mode when a caption reproduction command is input; And displaying the caption information stored in the caption information storage unit on the screen according to the display mode.

Hereinafter, an apparatus and method for caption information caption information storage / reproducing according to the present invention will be described with reference to the accompanying drawings.

Figure 3 is a block diagram showing the configuration of the caption cap according to the present invention, Figure 4 is a flow chart showing a caption information storage method of the caption cap according to the present invention, Figure 5 is a view showing a caption information classification example of Figure 4, 6 is a flowchart illustrating a caption information reproduction method according to the present invention.

3, the caption information storage unit 22 for storing caption information, the backup battery 23 for storing information contents of the caption information storage unit 22, and the user's Controlling a series of operations of storing the caption information output from the caption processing unit 7 in accordance with the caption information storage / playback command in the caption information storage unit 22 or reproducing caption information stored in the caption information storage unit 22. Except for the microcomputer 21, the same components as in the prior art are omitted, and detailed descriptions of the same components will be omitted and the same reference numerals as in the prior art will be given.

The caption information storage method of the present invention configured as described above will be described first with reference to FIG. 4.

If the user wants to save specific caption information while watching the caption screen, press the caption information storage menu key provided on the remote control or the main panel of the main unit to select the caption information storage and also select the storage mode, that is, continuous / screen / word / line. Select Save Unit.

Accordingly, the microcomputer 21 determines whether the user selects caption information storage (S11), and if the user selects caption information storage, the microcomputer 21 determines the storage mode (S12).

Subsequently, it is determined whether the storage mode is continuous (S13). If the storage mode is continuous, the caption information is captured until the user's stop command is input (S14).

On the other hand, the determination result (S13). If not in the continuous storage mode, it is determined whether the screen unit storage mode (S15), and if not in the screen unit storage mode, the storage unit (word / line) is determined (S16).

When the storage unit determination is completed, caption information is captured in a corresponding unit, that is, a screen / word / line unit (S17).

Subsequently, when caption information capture is completed, it is determined whether the available memory capacity of the current memory, that is, the caption information storage unit 22, is insufficient to store the captured information (S18). Display (S19).

On the other hand, if the memory capacity is a capacity capable of storing the captured information, the caption information is stored in the classification structure set by the user, that is, the memory structure composed of conversation / news / information, etc., as shown in FIG. 5. (S20).

Next, the caption information reproduction method according to the present invention will be described with reference to FIG.

The microcomputer 21 determines whether the user selects the caption information playback menu (S21). When the user selects playback of the caption information, the microcomputer 21 determines the classification mode set by the user (S22) and determines the display mode (S23). The caption information is displayed in the classification state and the display mode (S24).

In this case, as described above with reference to FIG. 5, the classification mode is a mode for selecting and playing news / information / conversation among caption information stored in the caption information storage unit 22, and the display mode includes the caption information as one storage unit. This mode is for determining whether to play back or play all caption information that can be displayed on the screen at the same time.

The caption information storage / playback apparatus and method of the present invention can classify the caption information required by the user among the caption information displayed on the screen, store the information in a separate memory, and play the information. It can be utilized to increase the user's convenience is effective.

Claims (6)

For the caption, A caption information storage unit for classifying and storing caption information for each field; A backup battery supplying power for storing information of the caption information storage unit; Caption information of the caption information, characterized in that the caption information stored on the screen according to the user's caption information storage / playback command, including the microcomputer to store on the screen or read from the caption information storage unit to display on the screen Storage / Playback Device. In the caption provided with a caption information storage unit and a microcomputer, Determining a storage mode and a classification mode when a caption storage command is input; Capturing caption information displayed on the screen in the determined storage mode, classifying the caption information into a corresponding classification mode, and storing the caption information in the caption information storage unit; Determining a classification mode and a display mode when a caption reproduction command is input; And displaying the corresponding caption information stored in the caption information storage unit on the screen according to the determined classification mode and the display mode. The method of claim 2, The storage mode includes a continuous storage mode for continuously storing caption information until a user's stop command is input; Screen save mode for saving the entire caption information displayed on the screen, Caption caption information storage / playback method characterized in that the caption information displayed on the screen divided into unit storage mode for storing in units of words / lines. The method of claim 2, The classification mode is a mode for classifying caption information by content (conversation / news / life information). The method of claim 2, Capturing the caption information displayed on the screen in the determined storage mode and capturing the caption information in the classification mode, and then searching the capacity of the current memory and storing the caption information. Captionative caption information storage / playback method, characterized in that further comprises the step of displaying a memory low message if determined to be insufficient. The method of claim 2, Displaying the corresponding caption information stored in the caption information storage unit in accordance with the classification mode and the display mode on the screen And displaying all caption information that can be displayed on one screen of the caption information corresponding to the classification mode or displaying one caption information corresponding to the classification mode according to a user's selection. Caption information storage / playback method of the caption.