KR100188279B1 - Televiewer option caption broadcasting, receive apparatus & method with dual-words caption transmit function - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewer-selective closed caption broadcasting, a receiving apparatus, and a method having a dual metabolic caption transmission function. In particular, when dual metabolic information is input and transmitted using two channels, font data of the transmitted dual metabolic information is transmitted. After reading from the storage unit and storing them in the respective storage units, when the mode is selected by the viewer, the character data of the corresponding mode is synthesized with the video signal and output on the screen.

Therefore, in the present invention, especially when watching a movie, we can transmit not only the familiar English but also various third-language metabolic information such as German or French so that it can be displayed on a TV screen.

Description

Viewer-selective closed captioning, receiving device and method with dual dialogue subtitle transmission

1 is a block diagram showing the configuration of a television broadcasting system for viewer-selective closed caption broadcasting according to the present invention.

2 is a block diagram showing the configuration of a television receiver for receiving viewer-selective closed captioning according to the present invention;

3 is a signal configuration diagram showing a configuration of a caption signal according to the present invention.

4 is a diagram showing a data packet structure of caption data according to the present invention;

5 is a view for explaining a control code according to the present invention.

6 is a Hangul complete code table for explaining the configuration of the character code according to the present invention.

7 and 8 are diagrams for explaining a procedure for executing a viewer-selective closed captioning, receiving apparatus, and method having dual metabolic subtitle transmission functions.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewer-selective caption broadcasting, a receiving apparatus, and a method having a dual-caption caption transmission function. In particular, the present invention receives foreign caption information of a foreign language metabolism transmitted through a channel dedicated to foreign language metabolism and outputs character data about the information from fontrom. The present invention relates to a viewer-selective closed caption broadcasting, receiving apparatus, and method having a dual-caption caption transmission function that allows a foreign-language subtitle subtitle to be viewed while watching a foreign movie.

The closed captioning method in television broadcasting includes an open caption method for superimposing news or notifications by the broadcaster's selection without supervising the viewer by superimposing a caption signal on the active section of the television signal, and a non-active section of the television signal. That is, when a caption signal is transmitted in a vertical blanking section, there is a closed caption method that allows the viewer to select a television screen and the dialogue content as captions.

Closed captioning closed captioning has been implemented since 1978 in the United States for the hearing-impaired without the sign language, and is also very useful for foreign language learning.

US Pat. No. 5,294,982, published in March 1994, discloses a closed caption broadcasting method of Roman characters and syllable characters. In particular, the captioning method of Korean is explained in detail. In the invention of the U.S. patent, in order to broadcast Korean in a closed caption method, a Korean character is divided into each phoneme of a consonant, a neutral, and a consonant, and an ASCII code corresponding to each phoneme is transmitted. Korean characters are displayed by mapping, neutral and final.

Since the conventional Korean closed caption method uses at least 3 to 4 bytes to represent a Korean character, the transmission speed and display speed are slow, and the decoding process is required to find the position of one character by combining 3 to 4 bytes in the decoding process. There was a problem that the processing was complicated. The complexity of the decoding process raises the cost of the decoder. This causes a problem of increasing the cost of the decoder, which millions of viewers have to pay in comparison to the encoder that is required only by broadcasting stations.

In addition, simultaneous display of Chinese characters, Korean, Japanese, and English, Russian, and Greek was impossible, and special symbols could not be displayed.

In addition, since the control code is required to display the meta information in the middle of the additional information display and display the additional information again, there is no independence between the meta information and the additional information, and a control system for distinguishing the display mode of the meta information is provided. If the display mode control code is not received at the time when the receiver starts to operate, the metabolic information cannot be displayed until the next control code is received.

In addition, the above-described invention was developed based on the television transmission environment of the United States, that is, the geographical environment with a lot of flat land. Therefore, in the geographical environment of Korea where the mountain area is 70% or more, the reception state of the receiving device is poor and the quality of the subtitle display is not only deteriorated. When watching a movie, there is a problem that only the language familiar to us, such as English, is used for subtitle information in foreign languages.

An object of the present invention is to transmit and receive not only English but also various third-language metabolic information, such as German or French, in order to solve the problems of the prior art. Disclosed is a dual language subtitle transmission, reception apparatus, and method for viewer-selectable subtitle broadcasting that can be displayed.

In order to achieve the above object, the transmission apparatus of the present invention is a viewer-selective caption broadcasting apparatus for inserting subtitle information into an arbitrary horizontal line that does not affect the broadcasting signal for every field of a television signal, and inputs Korean metabolic information. Hangul ambassador information input means; Foreign language metabolic information input means for inputting foreign language metabolic information; Odd field detection means for receiving a count value of the synchronization counter means and detecting an odd field by the count value; Switching means driven by a signal output from the odd field detection means and selectively outputting the Hangul metabolic information or foreign language metabolic information; Character information generating means for converting the metabolic information output from the switching means into a character code; Data packet modulation means for modulating the character code by a digital modulation method; And transmitting means for combining the modulated data packet with a video signal and transmitting the synthesized data packet.

A transmission method according to the present invention comprises the steps of: receiving a count value of a transmission counter transmitted by a viewer-selective closed caption broadcasting method in which subtitle information is inserted and transmitted in one horizontal line which does not affect a broadcast signal in every field of a television signal; Determining whether the count is odd; Recognizing that an odd field is odd if the odd number is input in the determining step, inputting Korean metabolic information; And converting the metabolic information into a video signal to be synthesized and transmitted.

The method may further include recognizing that the field is an even field and inputting foreign language metabolic information if the even number is determined.

In addition, the receiving apparatus of the present invention inserts and transmits subtitle information in one horizontal line that does not affect the broadcast signal in every field of the television signal, and transmits the subtitle information to the subtitle display apparatus for the viewer to selectively display the subtitle information. In addition, Hangul metabolism information storage unit for storing the Hangul metabolism information; Foreign language metabolic information storage unit for storing foreign language metabolic information; Command input means for selecting a function related to a subtitle; And checks the character code received by the analog / digital converting means and stores the Korean metabolic information in the Hangul metabolic information storage unit, and stores the foreign language metabolic information in the foreign language metabolic information storage unit and then selects the selected function of the command input means. And subtitle control means for reading the problem data from the font ROM and displaying it on the screen in response to the metabolic information received by the system control means and read out from the storage unit according to the selected mode.

The reception method of the present invention is a subtitle display method in which subtitle information is inserted into an arbitrary horizontal line that does not affect a broadcast signal for every field of a television signal, and the subtitle information is selectively displayed by a viewer upon reception. Extracting a caption signal from the video signal of the received television signal; Restoring the extracted caption signal to digital data; Detecting an error of the restored data; Checking the data to determine whether it is Hangul ambassador information; If the Hangul metabolic information is determined in the determining step, reading the character data of the Hangul metabolism information from the font ROM and storing it in the Hangul metabolism information storage unit; Reading the character data of the foreign language metabolic information from the font-rom and storing it in the foreign language metabolic information storage unit if the foreign language metabolic information is determined in the determining step; Checking whether the mode selected by the command input means is a Korean metabolic mode; Reading the character data from the Hangul metabolic information storage unit in the Hangul metabolism mode in the checking step; Reading text data from a foreign language metabolic information storage unit in a foreign language metabolic mode in the checking step; And synthesizing the text data with a video signal and outputting the same on a screen.

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

1 shows a configuration of a television broadcasting apparatus having a viewer-selectable closed captioning function. The audio signal input through the microphone 10 is mixed and amplified by the voice signal processor 30 and transmitted to the television signal modulator 50.

The video signal input through the video camera 20 is amplified and edited by the video signal processor 40 and transmitted to the television signal modulator 50. The television signal modulator 50 modulates the transmitted audio signal by FM, modulates the video signal by AM-modulation of the residual side wave method, and frequency-multiplexes and shifts the AM modulated signal and the FM modulated signal. The high frequency output unit 60 amplifies a high frequency signal and transmits a television signal to the air through an antenna.

The caption encoding unit 70 inputs Korean metabolic information and foreign language metabolic information related to movie captions through the character information input unit 71a of the character information generation unit 71. Various control information for subtitle control is input through the control signal input unit 71b. The character information input unit 71a includes a keyboard for inputting characters such as Korean, English, Chinese characters, Japanese, and special characters, and outputs the inputted character information as a 2-byte Hangul completion code KSC5901. The control information input unit 71b includes keypads such as a mode selection key and a function selection key and outputs the input control information as a 7-bit binary code.

The character code generator 71c uses the MSB of each byte of the input two-byte character code as the subtitle / additional information flag, and replaces the MSB with '0' for additional information and adds a parity bit to each byte. A data packet of a total of 18 bits of character code is generated.

The control code generator 71d divides the input 7-bit binary number into upper 4 bits and lower 3 bits, and adds a parity bit for the upper 4 bits, a control code identification bit for 2 bits, and a dialogue / addition flag to generate an upper byte. A lower byte is generated by adding a first parity bit, a second parit bit, a two-bit control code identification bit, and a subtitle caption / additional information flag for the lower three bits. A parity bit is added to each generated byte to generate a data packet having a total of 18 bits of control code. Details of the above-described data packet will be described later.

The data packet modulator 74 modulates the data packet generated by the character code generator 71c or the control code generator 71d by a digital modulation method.

The sync counter 72 inputs the sync signal provided from the video signal processor 40, resets it by the vertical sync signal, counts the horizontal sync signal, and counts the scan players. The window signal generator 73 inputs the count value of the synchronization counter 72 to generate the window signal. The window signal is a drive signal for switching the switching means 75 in order to superimpose the caption signal on a predetermined specific line of the video signal output from the video signal processor 40.

The odd field detector 76 detects whether the count value is even or odd based on the count value of the synchronization counter 72, and if the odd number is odd, the Korean metabolic information input unit 77 drives the character information generator. If it is connected to (71), a character code is generated in advance for inputting high Korean metabolic information and synthesized with a video signal for transmission.

In addition, when the count value of the odd field detector 76 is an even number, when the foreign language metabolic information input unit 78 is connected to the character information generation unit 71 by driving the switching unit 79, the character for the previously input foreign language metabolic information may be changed. A code is generated and synthesized with the video signal for transmission.

Referring to FIG. 2, there is shown a configuration of a viewer-selectable closed caption television receiver.

The tuner 110 demodulates a television signal of a channel selected from the high frequency signals received by the antenna and outputs a voice signal and a video signal. The voice signal is transmitted to the voice signal processor 120 to be equalized and amplified and output as voice through the speaker 130. The video signal is transmitted to the video signal processor 140, processed for luminance and color, and then output as an RGB signal.

The RGB signal is transmitted to the display driver 160 through the mixer 150, and the display driver 160 drives the CRT 170 in response to the transmitted RGB signal to display a television screen on the screen.

The caption decoding unit 200 digitally converts the video signal through the analog / digital converter 210 and transmits the digital signal to the caption processing unit 230. In addition, the sync separator 220 separates the sync signal from the video signal and transmits the vertical and horizontal sync signals to the subtitle processor.

The caption processor 230 generates a clock signal synchronized with the color burst signal of the video signal processor 140 to extract the caption data packet from the digital signal. The extracted data packet is decoded to control the caption processing in response to the decoded control code, and the character data is read from the font ROM 240 in response to the decoded character code and stored in the display storage 250. The character data stored in the display storage unit is converted into an RGB signal and transmitted to the mixer 150. The caption processing unit 230 exchanges control data with the system control unit 180 of the set. The system controller 180 transmits a caption-related command input through the command input unit 19 to the caption processing unit 180 and controls the system in response to control data transmitted from the caption processing unit 180.

The display storage unit 250 is composed of a Korean metabolic information storage unit 252 and a foreign language metabolic information storage unit 254.

The caption control unit 230 checks the data input from the analog / digital converter 210 to determine whether it is Korean or foreign language metabolic information, and stores each input information in the storage units 252 and 254. do.

Thus, the information in the storage unit 250 is read according to the mode selected by the command input unit 190, and the character data of the information is read from the font ROM 240 and output on the screen.

The detailed configuration of the caption information intended to be used in the caption broadcasting transmission / reception system described above is as follows.

In Korea, M-NTSC TV signals with 525 lines and 60 fields / sec are used as broadcast signals, and the vertical blanking period is specified from scan line 10 to scan line 20.

The Ministry of Information and Communication has not yet provided a statement on the use of signals during the vertical blanking period. For reference, ITU-R Recommendation Rec 473-2 and US FCC Report and Order 83-120.

The caption signal may use one of the scan lines 10-20 or the scan line 21 or the scan line 262 in the vertical blanking period for the transmission of the caption data. One or more may be used for increased data transfer or for other purposes. However, full-field data transmission is not considered in closed captioning.

The transmission bit rate of subtitle data should be 447443.125 bps ± 125 bps, and the maximum long-term rate of change should be within ± 196 (0.0125 bps). 1/8 of ± 10Hz), and the color burst must be frequency synchronized. It is preferable that the color carrier carrier has a continuous phase between the scan line and the scan line. If the phase of the color carrier is discontinuous due to screen editing, etc., at least phase synchronization should be performed on the color burst of the scan line.

In the data modulation method, the one corresponding to the logic value '1' is represented by one sine wave having a phase of 0 degrees and has a frequency of fac / 8 (447.443 kHz), and the one corresponding to the logic value '0' is 180 degrees. It uses a digital modulation scheme called Binary Phase Shift Keying (BPSK) or Phase Rcvcrsal Keying (PRK), which is represented by a period of sinusoids with a frequency of fac / 8 (447.443 kHz). The maximum range of phase jitter is ± 10 degrees. The optimal signal waveform will be defined in the future as it may vary depending on the frequency spectrum characteristics of the TV channel. However, due to the fundamental band-limiting frequency, the BPSK waveform may experience severe distortion where logic transitions occur, so that the phase-corrected waveform can be used for broadcasting after passing through a second-order Butterworth filter with a cutoff frequency of 3.5 MHz. Shall be. The impulse response of the Butterworth filter used is

The inspection method and basis are defined in Item I-7 (TV Broadcasting Station) item 4 (Text Multiple Broadcasting) b. (Superimposition of Data Line and Amplitude of Text Signal) among the inspection items of the radio station.The waveform of the caption signal is not NRZ. Since it is a pure sinusoidal wave, it is not necessary to apply the above criteria. However, in order to expand the coverage area, which is 70% or more like Korea, the maximum sinusoidal wave is 90 ± 5 IRE. Although the maximum amplitude of the normal data signal is defined, the overshoot may be included in the filter passband characteristic, so the maximum value of the overshoot is 5 IRE.

Referring to FIG. 3, the data line of the caption signal is composed of a six-cycle bit clock synchronization signal 302, a word start signal 304, and an 18-bit data string 306. FIG.

The bit clock synchronization signal 302 is a six-cycle sinusoidal signal that can be extracted by the caption decoding unit and used to read a bit period of 18-bit data. The frequency is fac / 4 (894.886 kHz). If the phase of the color carrier of the scan line is 0 degrees, it starts at the point 9.5usec (34 cycles of color burst) from the falling edge (OH) of the horizontal synchronization signal, and the phase of the color carrier of the scan line is If it is 180 degrees, it starts at the point of 9.64usec (34.5 cycles of color burst) from the falling edge (OH) of the falling edge of the horizontal synchronization signal. Since this signal is in frequency synchronization with the color burst of the corresponding line, it is also possible to extract the bit clock synchronization signal from the color burst.

The word start signal 304 is a period of a sine wave signal of fac / 16 (223.722 kHz) and a phase of 180 degrees, which serves to indicate the start of an 18-bit data packet.

The data string 306 is composed of 18 bits, and the bit rate is fac / 8 (447.443 kHz) and is modulated by the BPSK method.

Referring to FIG. 4, the data packet is composed of parity (p) in word units, subtitle caption / additional information flag (C / T), and details of code values. D0 to D8 lower words and D9 to D17 are referred to as upper words. D17 represents even parity for D0 to D16. This parity bit is for first detecting errors in transmission. D7 and D16 are the subtitle caption / additional information flag, 0 for the subtitle and 1 for the additional information, and the values of D7 and D16 must match. This flag is used to maintain word priority. D0 to D6 and D9 to D15 together represent a code value. Code values are interpreted as control codes if D5, D6, D14, and D15 are mode 0, otherwise they are interpreted as character codes.

Referring to FIG. 5, D1, D2, D3, D9, D10, D11, and D12 of the control code are control code data bits, and D0, D4, D8, and D13 are parity for the control code data bits. The three-bit code value of the lower word designates five functions. The five functions consist of a color designation function, a character attribute and rollup function, a display method and a rolldown function, a position shift function, and a matrix position designation function. In addition, the 4-bit code value of the upper word of the control code specifies 16 sub-functions of each function. Here, D0 is parity for D1, D2, and D3D4, D4 is parity for D1, D2, D10, and D11, and D13 is parity for D9, D10, D11, and D12.

In addition, the control code is transmitted twice in succession for safe reception of data, and the horizontal / vertical writing code and the matrix positioning code are transmitted almost every four seconds. Detailed description of the control code will be described later.

Referring to FIG. 6, the character code represents the data bits of the KSC5601 code with D0 to D6 of the lower word and D9 to D15 of the upper word. D8 is even parity for D0 to D7.

In the present invention, since the ASCII code is not used at all, the seven bits of D0 to D6 correspond to the seven bits of the lower byte, and the D9 to D15 correspond to the seven bits of the upper byte. Among the Hangul completion code (KSC5601) shown in FIG. 6, lines A1 to A2 (special characters), lines A3 (English), lines A4 (support), lines A5 (Greek), lines AA to AB (Kana, Japan), AC It is limited to lines (Russian), lines AD (German), lines AE (French), lines B0 to C8 (Korean), lines CA to FD (Chinese). The character code is sent only once per character.

As described above, the Korean subtitle can be transmitted using any scan line per field. One or more transmission scan lines defined in the field are called channels. NTSC TVs can use dual channels because there are dual fields in interlaced scanning. In other words, it is possible to use dual language subtitles such as voice multiplexing. Among them, Korean subtitles should use odd field channels and other foreign language only subtitles. Control codes transmitted for each channel are the same code set, and all character codes are included in KSC9501.

There are two kinds of information transmitted through the subtitle channel, and the method of interpreting and displaying the control code varies according to the type. One of the two types is the subtitles related to the video signal being broadcast, and the other is additional information which is not related to the broadcasting content displayed on the screen.

If the values of the subtitle subtitles / additional information flags are both '0' in the LSWord and MSWord of the data packet structure, the code value is interpreted for displaying the subtitle subtitles, whether they are control codes or character codes. In this case, only a part of the broadcasted screen is covered and the dialogue corresponding to the audio signal is displayed in the subtitle form.

Use only 2 ~ 5 lines of subtitles at the same time, and use scrolling, erasing, and rewriting to display the dialogue.

When only one channel is transmitted, characters from various countries may be mixed or used exclusively for Korean or foreign languages, and when transmitted through two channels, the channels may be divided into Korean and foreign language channels, respectively.

This subtitle subtitle should be as consistent with voice information as possible, and therefore has a higher priority than additional information in channel occupancy in dual word units.

If the values of the subtitle subtitles / additional information flags are both '1' in LSWord and MSWord of the data packet structure, the code value is interpreted for display of additional information, whether the code value is a control code or a character code. The additional information display displays character information on the entire screen as in computer communication regardless of the broadcast contents. Do not use scroll function because it is displayed in full screen.

When the information is transmitted through the two channels, the additional information does not need to be separated like the meta information. The additional information may occupy the channel at any time when the information is not displayed on the channel. You can pass it and finish captioning before the channel can be seized again.

Next, the screen display by the horizontal writing specification of the subtitle in the receiver will be described.

7 is a view for explaining a sequence of a viewer-selective closed caption broadcasting method having a dual metabolic caption transmission function. The viewer inserts subtitle information into an arbitrary horizontal line and does not affect the broadcast signal in every field of the television signal. In the selective caption broadcasting method, a step (S1) of receiving a count value of a transmitted sync counter is performed, and a step (S2) of determining whether the count value is an odd number is performed. Recognizing that the step of inputting the Korean metabolic information (S3), and if the even number in the determination step (S2) to perform the step of inputting the foreign language metabolic information (S4) by recognizing that it is an even field, and code the metabolic information In operation S5, the signal is converted, synthesized with a video signal, and then transmitted.

8 is a view for explaining a method of receiving a viewer-selective closed captioning broadcast having a dual-caption subtitle transmission function. The caption information is inserted into an arbitrary horizontal line that does not affect the broadcasting signal in every field of the television signal. In the subtitle display method in which the viewer selectively displays the subtitle information upon reception, extracting the subtitle signal from the video signal of the received television signal (S21), and converting the extracted subtitle signal into digital data. Performing the step of restoring to S22, detecting the error of the restored data (S23), checking the data to determine whether it is Hangul ambassador information (S24), and determining the step In the case of Hangul metabolic information in (S24), the character data of Hangul metabolism information is read from the font drop and stored in the Hangul metabolism information storage unit. (S25) and if the foreign language metabolic information is determined in the determining step (S24), the character data of the foreign language metabolic information is read from the font ROM and stored in the foreign language metabolic information storage unit (S26). And checking whether the selected mode is a Korean metabolic mode (S27), and if the Korean metabolic mode is selected in the checking step (S27), performing a step (S28) of reading text data from the Korean metabolic information storage unit and performing a video signal. And synthesizing and outputting the image data on the screen (S29). If the foreign language metabolism mode is performed in the check step (S27), the character data is read out from the foreign language metabolic information storage unit (S30). Synthesis is performed and then output to the screen (S29).

In the case of multiple voices such as movies, the dual-language subtitles can be broadcast on odd and even field channels. When a dual language is broadcast using an odd field and an even field, the receiver may determine the language type by displaying a line number of KSC5601 and displaying an icon on the receiver. When the broadcasting operator broadcasts the first language and the dual language subtitles, the broadcasting operator may display the logo for about one minute at the beginning of the program as in the case of the voice multiplexing.

If the user changes the television channel when using the subtitles and additional information, the subtitle operation is canceled and only the normal television screen is displayed even if the subtitle signal is transmitted to the changed television channel.

When no special control code is received at the time the user selects the dialogue subtitle after turning on the receiver, the receiver maintains the attribute release status and immediately puts the white text of the black background in the first column position of the tenth row of the subtitle area in horizontal writing. Display.

At a minimum, the receiver can perform operations corresponding to the following functions through the remote control, and additional functions can be added.

Indication of receiving caption packet in field

Display caption sensitivity

Dual language presence indication

Indication of receiving additional information

Metabolism subtitle on / off function

Additional information on / off function

Additional information page hold function

Dual Language Metabolism Subtitle Selection

Vertical write protection

As described above, in the present invention, the viewer-selective closed caption broadcasting transmits a variety of third-language metabolic information such as German or French as well as English, which is familiar to us when watching movies. This has the effect of displaying on the screen.

Claims (4)

A viewer-selective caption broadcasting apparatus for inserting subtitle information into an arbitrary horizontal line that does not affect a broadcast signal in every field of a television signal, the method comprising: Hangul metabolic information input means for inputting Korean metabolic information; Foreign language metabolic information input means for inputting foreign language metabolic information; Odd field detection means for receiving a count value of the synchronization counter means and detecting an odd field by the count value; Switching means driven by a signal output from the odd field detection means and selectively outputting the Hangul metabolic information or foreign language metabolic information; Character code generating means for converting the metabolic information output from the switching means into a character code; Data packet modulation means for modulating the character code by a digital modulation method; And a transmission means for combining the modulated data packet with a video signal and transmitting the synthesized data packet. A viewer-selective closed caption broadcasting method for inserting caption information into one horizontal line which does not affect a broadcast signal for every field of a television signal, and transmitting the caption information, the method comprising: receiving a count value of a transmitted synchronization counter; Determining whether the count is odd; Recognizing that an odd field is odd if the odd number is input in the determining step, inputting Korean metabolic information; Inputting foreign language metabolic information by recognizing that an even field is an even number in the determining step; And transcoding the metabolic information, synthesizing it with a video signal, and transmitting the encoded metabolic information. In the receiver of the viewer-selective closed captioning broadcasting in which the caption information is inserted and transmitted on an arbitrary horizontal line which does not affect the broadcasting signal in every field of the television signal, and the viewer selectively displays the caption information upon reception. Hangul metabolic information storage unit for storing the metabolic information; Foreign language metabolic information storage unit for storing foreign language metabolic information; Command input means for selecting a function related to a subtitle; Check the character code received by the analog / digital converting means and store it in the Korean metabolic information storage unit if it is Hangul metabolic information, and store it in the foreign language metabolic information storage unit if it is foreign language metabolic information and then select the function of the command input means. And a subtitle control means for reading the character data from the font ROM and displaying it on the screen in response to the metabolic information received by the control means and read out from the corresponding storage unit according to the selected mode. A receiver for viewer-selective closed captioning broadcasting having a function. In the receiving method of the viewer-selective closed captioning broadcasting in which the caption information is inserted and transmitted on an arbitrary horizontal line which does not affect the broadcasting signal in every field of the television signal, and the viewer selectively displays the caption information upon reception. Extracting a caption signal from the video signal of the television signal; Restoring the extracted caption signal to digital data; Detecting an error of the restored data; Checking the data to determine whether it is Hangul ambassador information; If the Hangul metabolic information is determined in the determining step, reading the character data of the Hangul metabolism information from the font ROM and storing it in the Hangul metabolism information storage unit; Reading the character data of the foreign language metabolic information from the font-rom and storing it in the foreign language metabolic information storage unit if the foreign language metabolic information is determined in the determining step; Checking whether the mode selected by the command input means is a Korean metabolic mode; Reading the character data from the Hangul metabolic information storage unit in the Hangul metabolism mode in the checking step; Reading text data from a foreign language metabolic information storage unit in a foreign language metabolic mode in the checking step; And synthesizing the text data with a video signal and outputting the text data on a screen.