KR100216909B1 - Caption processing apparatus at double teletext mode of television - Google Patents

Abstract

The present invention provides a caption processing apparatus in a double teletext mode of a television that allows a screen to be displayed as a moving subtitle for a lower teletext screen when a double screen is displayed for one teletext screen on a television.

Accordingly, according to the present invention, the image signal of the television broadcast tuned through the tuner 2 and amplified by the image IF unit 4 is processed through the image processing means 6, 8, 10, and the CRT 12 A teletext decoding processing means (14,16) for extracting teletext data from a video signal of the television broadcast and decoding the code data and teletext character data in a television reproduced on a screen, and a double teletext mode; Text character arranging means 18 for arranging the teletext character data in units of characters on a line basis in accordance with the execution of?, Subtitle processing means 20 for processing the arranged teletext character data as a moving subtitle, double teletext mode; Blanking signal generating means 22 for generating a blanking signal for the blanking process for the lower screen formed according to the blanking signal from the blanking signal generating means 22 and the ruler A signal synthesizing means 24 for synthesizing the film-processed teletext subtitle data to the image processing means 8, a data storing means 28 for storing code data of the teletext data, and a function setting unit 26 Controlling the arrangement processing state of the teletext character data based on the code data of the teletext data according to the execution of the double teletext mode by setting the key, and outputting it as a moving subtitle; It characterized in that it comprises a control means 30 to control the blanking signal is generated from.

Description

Subtitle Processing Device in TV's Double Teletext Mode

The present invention relates to a caption processing apparatus in a double teletext mode of a television, and more particularly to a caption processing of a lower teletext screen in a double teletext mode for a teletext screen received from a television broadcast signal on a television. A subtitle processing apparatus in a double teletext mode of a television.

At the time of broadcasting RF signal for broadcasting program transmitted from broadcasting station, various service information such as news, sports, business, weather forecast, stock, shopping, science, travel information, etc. is converted into text or figure. Subsequently, so-called 0b character multicasting (hereinafter referred to as telecasting) converts the service information edited into the text or figure into the form of a digital signal and superimposes and transmits it within 4H periods of 10H to 21H periods of the vertical blanking period of the broadcast signal. 0c is called text broadcasting.

On the other hand, a method of converting image information composed of characters or figures into digital signals and transmitting them is a pattern method of decomposing and transmitting the characters or figures into pixels, and a code method of converting them into character codes or figure codes. The hybrid method, which is a mixture of the pattern method and the code method, is mainly used.

According to such teletext broadcasting, a broadcasting station broadcasts a regular broadcast program, and collects and classifies various service information separately by field, edits it into a multi-page screen in the form of a magazine, and assigns a page number to each screen. The entire screen is transmitted as a digital signal according to a specified order, and the teletext information superimposed on the vertical retrace period of the transmitted broadcast signal in a receiver, that is, a television equipped with a teletext broadcast reception adapter or a teletext decoder If the signals for the configuration of the desired page are sequentially received and displayed on the screen, the desired information is displayed.

This teletext information is transmitted in the form of a data packet in the vertical retrace period of a television broadcast signal. The data packet has a synchronization unit having 24 bits (ie, 3 bytes) and a 272 bit (ie 34 bytes). It consists of a data part. At this time, the synchronization unit is composed of a lock run-in for bit synchronization and a synchronization code for byte synchronization, and the data unit is a data block composed of 176 bits. It is included with identification data or control data.

Accordingly, through the teletext information, the television can receive a variety of text information and display it on the CRT screen. The display text according to the teletext information can be changed according to its display mode switching state. Not only the display characters can be reproduced alone but also the composite signals can be synthesized with the video signals according to the television broadcast.

In the teletext broadcasting, a double teletext mode is provided so that one teletext screen is divided into an upper screen and a lower screen so that one teletext screen can be displayed on the upper screen. As for the screen, the desired teletext screen portion can be selectively displayed on the teletext screen of the first chapter.

However, in such teletext broadcasting, if the upper screen and the lower screen are configured by executing the double teletext mode and one teletext screen is displayed, the teletext screen of the upper part and the tele of the lower part are transferred to the next teletext screen. Since the text screen is implemented as two teletext screens, there is a disadvantage in that unnecessary function manipulation of the viewer is increased due to inevitably processing the same teletext screen as two sheets.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and the subtitles in the double teletext mode of the television are made to display the screen as a moving subtitle for the lower teletext screen when the television is double-screened on one teletext screen. It is an object to provide a processing device.

According to the caption processing apparatus of the television in the double teletext mode of the present invention to achieve the above object, the video signal of the TV broadcast tuned through the tuner and amplified intermediate frequency through the video IF unit through the video processing means. A television to be processed and reproduced on a CRT screen, comprising: teletext decoding processing means for extracting teletext data from the video signal of the television broadcast and decoding code data and teletext character data, and executing the double teletext mode; Text character array means for processing teletext character data in units of characters on a single line, subtitle processing means for processing the arranged teletext character data as a moving subtitle, and blanking of a lower screen formed according to a double teletext mode Blanking signal generating means for generating a blanking signal for processing, said Signal synthesizing means for synthesizing the blanking signal from the blanking signal generating means and the subtitle-processed teletext subtitle data to the image processing means, data storage means for storing code data of the teletext data, and a key of a function setting unit In accordance with the execution of the double teletext mode by setting, the teletext character data is arranged as a moving caption based on the code data of the teletext data, and a blanking signal is generated from the blanking signal generating means. Provided is a caption processing apparatus in a double teletext mode of a television comprising control means for controlling.

According to the present invention configured as described above, when the teletext data received from a television broadcast signal is displayed on a television, if the double teletext mode is executed for the teletext screen, one teletext screen is displayed for the upper screen. While the screen can be partially displayed, the lower screen is arranged in units of one line so that the screen can be displayed on the screen as a moving caption.

1 is a block diagram showing a caption processing apparatus in a double teletext mode of a television according to the present invention;

2 is a diagram illustrating a state in which a lower telex screen is closed captioned in a double teletext mode according to an exemplary embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

2: tuner, 4: video IF unit,

6: image amplifier, 8: image signal processor,

10: video output unit, 12: CRT,

14, signal extraction unit, 16: teletext decoder,

18: text character array unit, 20: subtitle processing unit,

22: blanking signal generation unit, 24: signal synthesis unit,

26: function setting section, 28: data storage section,

30: micom.

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

1 is a block diagram showing a caption processing apparatus in a double teletext mode of a television according to the present invention. In the apparatus of the present invention, reference numeral 2 denotes a channel for selecting a predetermined channel from the microcomputer 30, which will be described later. In addition to receiving the tuning data (VT) to tune the RF signal of the channel, the local oscillation frequency signal generated by the channel tuning data mixed with the RF signal of the tuned broadcasting channel to a 58.75MHz intermediate frequency signal Represents a tuner to convert.

Further, reference numeral 4 denotes an image IF unit which separates an image intermediate frequency signal from the tuned television broadcast signal and amplifies the image intermediate frequency, and 6 denotes an image IF 80 to enable image signal processing of the intermediate frequency amplified image intermediate frequency signal. An image amplification unit which handles signal amplification at 150V peak-peak value, distributes signals to a synchronous circuit or amplification circuit, corrects transmission times of color signals and luminance signals, and compensates mid and high frequency characteristics.

In addition, reference numeral 8 denotes that the luminance signal and the color difference signal are separated from the signal-amplified video signal to perform luminance adjustment and color demodulation operation, synthesized into a composite video signal, and outputted. Image processing of the teletext signal from the text decoder 16, and image processing of the teletext signal in the form of a moving subtitle from the signal synthesizing section 24, which will be described later, in accordance with the double teletext mode, are displayed on the lower screen. An image signal processing unit 10 denotes an image output for amplifying the composite image signal and the teletext signal processed and generating a vertical / horizontal driving signal for driving the vertical / horizontal deflection coil of the CRT 12. Represents wealth.

Reference numeral 14 denotes a signal extraction unit for extracting teletext data superimposed within the vertical blanking period included in the image signal from the image amplifier 6, and 16 denotes a code data and a telegram in the extracted teletext data. A teletext decoder which decodes text character data to be displayed on the screen is shown.

Further, reference numeral 18 denotes a text character that receives the teletext character data from the teletext decoder 16 in accordance with the execution of the double teletext mode and arranges it into one line of character data under the control of the microcomputer 30 described later. 20 shows a caption processing unit for caption processing so that the teletext character data arranged in units of one line can be displayed as a moving caption.

Reference numeral 22 denotes a blanking signal generator for generating a blanking signal for a blanking process for a lower screen formed to display moving subtitles under the execution of the double teletext mode under the control of the microcomputer 30, which will be described later. 24 denotes a signal synthesizing unit for synthesizing the teletext data in the form of a moving subtitle through the caption processing unit 20 with the blanking signal from the blanking signal generation unit 22 and outputting the synthesized blanking signal to the image signal processing unit 8.

Reference numeral 26 is made up of a matrix button unit provided in a predetermined portion of the remote control unit for remote control or the main body of the main body, so that a normal teletext mode or a double teletext mode can be used for displaying the teletext characters received from a television broadcast signal. A function setting section for performing a key operation for execution setting is shown.

Reference numeral 28 denotes a data storage unit for storing code data of the teletext data decoded by the teletext decoder 16, and 30 denotes a double teletext mode by key operation of the function setting unit 26. When executed, the lower screen is formed according to the double teletext mode in the blanking signal generator 22 by controlling the character array state of the text character array unit 18 based on the code data from the teletext decoder 16. A microcomputer for controlling a blanking signal for blanking is generated.

Next, the operation of the present invention made as described above will be described in detail with reference to FIGS. 1 and 2.

First, when an image signal according to television broadcasting of a predetermined channel selected through the tuner 2 is amplified by the image intermediate frequency through the image IF unit 4 and the signal through the image amplifier 6, the image signal processor 8 In this case, the signal amplified video signal is processed in the form of a composite video signal to reproduce an image on the screen of the CRT 12 through the image output unit 10.

In this state, the signal extraction unit 14 extracts the teletext data included in the vertical blanking period of the video signal, and in the teletext decoder 16, the code data and the teletext character data are extracted from the extracted teletext data. While decoding the microcomputer 30 stores the code data of the decoded teletext data in the data storage unit 28.

At this time, when the double teletext mode is set by the key operation of the function setting unit 26, the microcomputer 30 sets the arrangement information for the teletext character data based on the code data of the data storage unit 28. By recognizing and controlling the text character array unit 18, the teletext character data is arranged in units of one line, and the arrayed teletext character data is processed by the caption processing unit 20 in the form of a moving caption. Meanwhile, the blanking signal generator 22 generates a blanking signal for blanking the lower screen formed according to the double teletext mode under the control of the microcomputer 30.

Accordingly, the signal synthesizing unit 24 synthesizes the blanking signal generated by the blanking signal generating unit 22 and the teletext character data from the subtitle processing unit 20 and applies it to the video signal processing unit 8, The image signal processor 8 receives the teletext character data of the corresponding screen through the teletext decoder 8 and performs image processing, and the teletext data in the form of a moving subtitle from the signal synthesizer 24 is processed. As the image is received and outputted, as shown in FIG. 2, one teletext screen is implemented on the upper screen 32, and the lower screen 34 has a telescopic screen on the CRT 12 screen. Text characters can be displayed by moving in the form of a moving caption.

According to the present invention made as described above, when the double-teletext mode is executed in the display of the teletext character on the television, one portion of the teletext character is displayed on the upper screen, and the teletext character moves on the lower screen. As it can be moved and displayed in the form of subtitles, it is easy not only to grasp the entire teletext screen of one sheet even when executing the double teletext mode, but also to move to the next teletext screen in the next chapter. Will have

Claims (1)

Image signals of the television broadcast tuned through the tuner 2 and amplified by the image IF unit 4 are processed through image processing means 6, 8, and 10 to be reproduced on the screen of the CRT 12. In television to say, Teletext decoding processing means (14, 16) for extracting teletext data from the video signal of the television broadcast and decoding the code data and teletext character data; Text character arranging means (18) for arranging teletext character data in units of one line of characters in accordance with execution of the double teletext mode; Subtitle processing means 20 for processing the arranged teletext character data as a moving subtitle; Blanking signal generating means 22 for generating a blanking signal for blanking processing on the lower screen formed in the double teletext mode; A signal synthesizing means 24 for synthesizing the blanking signal from the blanking signal generating means 22 and the subtitle-processed teletext subtitle data and outputting it to the image processing means 8, Data storage means (28) for storing code data of said teletext data; According to the execution of the double teletext mode by the key setting of the function setting section 26, the arrangement processing state of the teletext character data is controlled based on the code data of the teletext data so as to be output as a moving caption and the blanking signal. And a control means (30) for generating a blanking signal from the generating means (22).