WO2001069920A1 - Procede et appareil d'enregistrement et de relecture de donnees de sous-titres et de donnees audio - Google Patents

Procede et appareil d'enregistrement et de relecture de donnees de sous-titres et de donnees audio Download PDF

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Publication number
WO2001069920A1
WO2001069920A1 PCT/KR2001/000223 KR0100223W WO0169920A1 WO 2001069920 A1 WO2001069920 A1 WO 2001069920A1 KR 0100223 W KR0100223 W KR 0100223W WO 0169920 A1 WO0169920 A1 WO 0169920A1
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WIPO (PCT)
Prior art keywords
caption
audio data
memory
data
audio
Prior art date
Application number
PCT/KR2001/000223
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English (en)
Inventor
Tae-Oog Yoo
Original Assignee
Yoo Tae Oog
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yoo Tae Oog filed Critical Yoo Tae Oog
Priority to JP2001566546A priority Critical patent/JP3722750B2/ja
Publication of WO2001069920A1 publication Critical patent/WO2001069920A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0884—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of additional display-information, e.g. menu for programme or channel selection
    • H04N7/0885—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of additional display-information, e.g. menu for programme or channel selection for the transmission of subtitles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • H04N21/4884—Data services, e.g. news ticker for displaying subtitles

Definitions

  • the present invention relates to a method and apparatus for recording and replaying caption data and audio data, which is used to learn a language.
  • a closed caption system is adopted for hearing impaired persons to read caption text corresponding to spoken dialog.
  • a closed captioning standard in the United States is defined by the Federal Communication Commission (FCC). The standard specifies that the closed caption data should be transmitted on line 21 of every odd field of video signal.
  • the closed caption data consist of caption control codes and caption data including information about positions and attributes of the caption data.
  • the closed caption system can be also used to learn a language (for example, U.S. Pat. No. 5,572,260 dated Nov. 5, 1996).
  • a user may record closed-captioned program such as movies, TV sitcoms, etc. on a video cassette tape by using a video cassette recorder (VCR) and replay the video cassette tape.
  • VCR video cassette recorder
  • the user searches the caption text and replays the audio signal corresponding to the selected caption text, the user should rewind the video cassette tape back and forth and replay the tape at an appropriate point.
  • the purpose of the present invention is to provide a method and apparatus whereby users can record and replay caption data and audio data containing only spoken dialogs corresponding to the caption data.
  • video signals and audio signals are input to the apparatus of the present invention.
  • the input audio signals are converted to digital audio data by an analog-digital converter.
  • the digital audio data is delayed by an input buffer that can accumulate audio data of maximum time dtl .
  • a closed caption decoder extracts and decodes closed caption data from the input video signal.
  • the decoded caption data is sent to a microcomputer.
  • the microcomputer stores the caption data in a memory and transfers the caption data to a display control means that displays the caption data on a monitor.
  • the microcomputer When a caption control code indicating caption display on screen is received and detected by the closed caption decoder, the microcomputer marks the last memory address of the stored caption data block, starts storing audio data in the memory and marks the starting memory address of audio data. By using the input buffer, one can record audio data time dtl earlier than the caption control code indicating caption display is received. After a caption control code indicating caption erasure is received and detected by the closed caption decoder, the microcomputer keeps storing audio data for a predetermined time. At the end of the predetermined time, the microcomputer stops storing the audio data and marks on the last memory address of the stored audio data block. By repeating these processes, the apparatus records the caption data blocks and the audio signals containing only the spoken dialogs corresponding to the caption data blocks. With these caption data blocks and audio data blocks, users can easily scan the caption data blocks and replay the corresponding audio data blocks. BRIEF DESCRIPTION OF DRAWINGS
  • Fig 1 is a block diagram of the apparatus for recording and replaying caption data and audio data
  • Fig 2 is a flowchart showing a method of recording caption data and audio data
  • Fig 3 is a timing diagram of caption data blocks, audio data blocks and spoken dialogs
  • Fig 4 is memory maps of the caption data, the audio data and the memory address in the memory
  • Fig 5 is a flowchart showing a method of replaying caption data and audio data
  • Fig 6 is a flowchart showing a method of replaying caption data and audio data with the audio pause and audio repeat functions
  • Fig 7 is a flowchart showing processes of the audio pause and audio repeat functions in the ith block in Fig 6
  • Fig 8 is a flowchart showing a method of scanning caption data blocks
  • Caption control codes and their timing that are used in the present invention will be explained In Off-Line captioning for movies, videos, TV sitcoms, etc closed caption data is encoded in Line 21 of video signal in such way that the appearance of caption data on screen is synchronized to spoken dialog corresponding to the caption data
  • the appearance of the caption data on the screen is controlled by caption control codes
  • a caption control code indicating caption display on screen is received, the caption data is displayed on the screen and when a caption control code indicating caption erasure is received, the displayed caption data disappears on the screen Therefore, the receiving time of the caption control code indicating caption display is approximately starting time of the spoken dialog and the receiving time of the caption control code indicating caption erasure is approximately ending time of the spoken dialog
  • the receiving time of the caption control codes indicating caption display and caption erasure By marking memory addresses of caption data and audio data corresponding to the receiving time of the caption control codes when the caption data and the audio data are recorded, one can replay the caption data and the audio data
  • the caption control codes indicating caption display and caption erasure are an End Of Caption (EOC) code and an Erase Display Memory (EDM) code respectively in Pop-On caption mode
  • EOC End Of Caption
  • EDM Erase Display Memory
  • a Resume Caption Loading (RCL) code indicating the Pop-On caption mode is followed by caption data that includes caption character codes or information about positions and attributes of caption characters
  • the caption data is firstly stored in a non- display memory
  • the caption data block stored in the non-display memory is not displayed on screen
  • the non-display memory and a display memory are swapped and the caption data block in the display memory is displayed on the screen
  • the EDM code is received, the caption data block displayed on the screen is erased
  • a Resume Direct Captioning (RDC) code indicating the Pamt-On caption mode is followed by the caption data
  • the caption data is directly stored in the display memory and displayed on the screen
  • the caption data block displayed on the screen is erased by the EDM code
  • Fig 1 is a block diagram of an apparatus for recording and replaying caption data and audio data according to the present invention
  • An instruction input means 10 provides an instruction selected by a user, such as an instruction for recording, an instruction for replaying, etc , to a microcomputer 1 1
  • video signal outputted from a video cassette recorder (VCR) is inputted to a closed caption decoder 13 through a video input terminal 12 and audio signal outputted from the VCR is inputted to an analog-digital converter (ADC) 15 through an audio input terminal 14
  • ADC 15 converts the analog audio signal to digital audio data
  • An input buffer 16 stores the audio data in a so called first-in-first-out way
  • the input buffer 16 can accumulate audio data of maximum time dtl If there is no signal from the microcomputer 1 1 , the input buffer 16 erases the first-in audio data after time dtl
  • the closed caption decoder 13 extracts two byte closed caption data from the inputted video signal and decodes the closed caption data
  • the memory address of audio data corresponding to the receiving time of the caption control code is obtained by adding total memory addresses of audio data corresponding to time dtl to the memory address of audio data stored in the memory 18 at the receiving time of the caption control code. If the closed caption decoder 1 3 does not receive the next caption control code indicating caption display within predetermined time dt2, the microcomputer 1 1 stops storing audio data after time dt2, that is, after storing more audio data corresponding to time dt2. If the closed caption decoder 13 extracts and decodes closed caption data within time dt2, it provides the caption data to the microcomputer 1 1 .
  • the microcomputer 1 1 stores the caption data in the memory 18 and transfers the caption data to the display control means 19 while it keeps storing audio data. If the closed caption decoder 13 detects the caption control code indicating caption display within time dt2, it provides a signal to the microcomputer 1 1. Then, the microcomputer 1 1 stores the last memory address of the next caption data block and memory address of audio data stored in the memory 1 8 while it keeps storing audio data. This memory address of audio data is the starting memory address of the next audio data block. These processes are repeated to record caption data blocks and the audio data blocks containing only spoken dialogs corresponding to the caption data blocks.
  • the microcomputer 1 1 transfers audio data from the memory 18 to an output buffer 21 and caption data block from the memory 1 8 to the display control means 19.
  • a digital-analog converter (DAC) 22 converts audio data to analog audio signal that is turned into sound by a speaker 23.
  • the display control means 19 displays the caption data block on the monitor 20.
  • the display control means 19 can display several caption data blocks in various ways. As an example, the display control means 19 starts displaying the caption data block from the top row of the monitor 20.
  • the display control means 19 displays the next caption data block below the previous caption data block If there is no space for the next caption data block after several caption data blocks are displayed, the display control means 19 scrolls up the displayed caption data blocks and displays the next caption data block on the bottom of the monitor 20 When memory address of audio data transferred to the output buffer 21 is the memory address of audio data corresponding to the receiving time of the caption control code indicating caption erasure, the microcomputer 1 1 transfers the next caption data block to the display control means 19 These processes are repeated to replay the caption data and the audio data
  • Fig 2 is a flowchart showing the method of recording caption data and audio data in the Pop-On caption mode
  • the closed caption decoder 13 extracts and decodes two byte closed caption data from inputted video signal If the closed caption data is not the End Of Caption (EOC) code indicating caption display, the closed caption decoder 13 provides the decoded caption data to the microcomputer 1 1 (step S2) In step S3, the microcomputer 1 1 stores the caption data in the memory 1 8 and transfers the caption data to the display control means 19 The display control means 19 displays the caption data on the monitor 20 After step S3, the process returns to step S I These processes are repeated until the EOC code is received and detected by the closed caption decoder 13 If the EOC code is received and detected in step S I , the closed caption decoder 13 provides a signal to the microcomputer 1 1 in step S2 Then, the microcomputer 1 1 stores the last memory address, LADDR[C] of the stored caption data block in the memory 18 in step S4 In step S5, the microcomputer 1 1
  • step S6 the closed caption decoder 13 extracts and decodes closed caption data if closed caption data is received.
  • the closed caption decoder 13 provides the caption data to the microcomputer 1 1 in step S7.
  • the microcomputer 1 1 stores the caption data in the memory 1 8 and transfers the caption data to the display control means 19 while the microcomputer 1 1 keeps storing audio data.
  • the process returns to step S6.
  • the closed caption decoder 13 provides a signal to the microcomputer 1 1 in step S7 and the microcomputer 1 1 stores memory address of audio data corresponding to the receiving time of the EDM code in the memory 18 (step S9).
  • the memory address of audio data stored in the memory 18 at the receiving time of the EDM code is EADDR[A]
  • the memory address of audio data corresponding to the receiving time of the EDM code is obtained by adding total memory addresses of audio data corresponding to delay time dtl , B to EADDR[A], that is EADDR[A]+B.
  • the display control means 19 keeps displaying the caption data block on the monitor 20 in this embodiment.
  • the microcomputer 1 1 checks whether memory address of audio data stored in the memory 18 passes memory address of audio data, EADDR[A]+B+D or not, where D is total memory addresses of audio data corresponding to predetermined time dt2.
  • step S 14 the microcomputer 1 1 stops storing audio data More audio data corresponding to time dt2 is recorded to avoid cutting off the ending portion of spoken dialog corresponding to the caption data block
  • step S I 4 the process returns to step SI
  • closed caption data is received and decoded by the closed caption decoder 13 (step S l l ) before memory address of the stored audio data reaches EADDR[A]+B+D and if the closed caption data is not the EOC code
  • the closed caption decoder 13 provides the caption data to the microcomputer 1 1 in step S12
  • the microcomputer 1 1 stores the caption data in the memory 18 and transfers the caption data to the display control means 19 in step S I 3
  • step S 13 the process returns to step S 10
  • the EOC code is received and detected by the closed caption decoder 13 in step S l l and S 12 before memory address of the stored
  • Spoken dialog D3 corresponding to C3 starts at around t5 and ends at around t6.
  • Audio data block Al recorded from tl -dtl to t2+dt2 covers spoken dialog Dl .
  • Audio data block A2 recorded from t3-dt l to t4+dt2 covers spoken dialog D2 and audio data block A3 recorded from t5-dtl to t6+dt2 covers spoken dialog D3.
  • the time interval between t2 and t3 is greater than dtl +dt2 and the time interval between t4 and t5 is less than dtl and dt2.
  • Fig 4 shows the memory maps of the caption data, the audio data and the memory address data shown in Fig. 3.
  • the last memory address of caption data block C l, LADDR[C 1 ] and the starting memory address of audio data block A l, SADDR[A1 ] are stored in the address memory at the receiving time tl of the EOC code.
  • the memory address of audio data stored in the audio memory at the receiving time t2 of the EDM code is EADDRfAl ].
  • the last memory address LADDR[C2] of caption data block C2 and the starting memory address SADDR[A2] of audio data block A2 are stored in the address memory at t3 and the memory address EADDR[A2]+B of audio data corresponding to the receiving time t4 of the EDM code is stored in the address memory at t4.
  • the ending memory address of audio data block A2 is EADDR[A2]+B+D.
  • the last memory address LADDR[C3] of caption data block C3 and the starting memory address of audio data block A3 are stored in the address memory at t5 and the memory address EADDR[A3]+B of audio data corresponding to the receiving time t6 of the EDM code is stored in the address memory at t6.
  • the ending memory address of audio data block A3 is EADDR[A3]+B+D
  • Fig 5 is a flowchart showing a method of replaying caption data and audio data
  • a user can start replaying caption data and audio data by selecting a replay instruction on the instruction input means 10
  • the microcomputer 1 1 reads out the starting address of the first audio data block A l from the memory 18 and transfers audio data from the memory 1 8 to the output buffer 21
  • the DAC 22 converts the audio data to analog audio signal and the analog signal is turned into sound by the speaker 23
  • the microcomputer 1 1 reads out the last memory address, LADDRfCl ] of the first caption data block Cl from the memory 18
  • step P31 the microcomputer 1 1 transfers caption data block Cl from the memory 18 to the display control means
  • the display control means 19 displays the caption data block on the monitor
  • step P41 the microcomputer 1 1 reads out the memory address EADDRfAl ]+B of audio data corresponding to the receiving time of the EDM code from the memory 18
  • step P5 1 the microcomputer 1 1 compares memory address of the transferred audio data with memory address EADDRfAl ]+B If memory address of the transferred audio data is less than EADDRfAl ]+B and if the stop instruction is made on the instruction input means 10 in step P61 , the process ends If memory address of the transferred audio data is equal to or greater than EADDRfAl ]+B in step P51 , the process proceeds to step P22 in which the microcomputer 1 1 reads out the last memory address of the second caption data block These processes for the first caption data block C l and the first audio data block Al are repeated for the second caption data block C2 and the second audio data block A2 These processes are repeated for all the caption data blocks and the audio data blocks, that is, from the first block to the last nth block in Fig 5 If memory address of the
  • Fig 6 is a flowchart showing a method of replaying caption data and audio data with audio pause and audio repeat functions Processes for the audio pause and audio repeat functions are added to the flowchart shown in Fig 5
  • Fig 7 is a flowchart showing processes of the audio pause and audio repeat functions in the ith block of Fig 6
  • the microcomputer 1 1 stops transferring audio data to the output buffer 21 in step P8 ⁇
  • the microcomputer 1 1 1 starts transferring audio data to the output buffer 21 again in step Pl Oi and the process proceeds to step P l l i
  • the microcomputer 1 1 reads out the starting memory address SADDR[A ⁇ -l] of the ( ⁇ -l )th audio data block from the memory
  • Fig 8 is a flowchart showing a method of scanning caption data blocks and replaying audio data block corresponding to a selected caption data block
  • the microcomputer 11 reads out the last memory address LADDRfC l ] of the first caption data block C l from the memory 18 in step Ti l
  • the microcomputer 1 1 transfers the first caption data block Cl to the display control means 19 and the display control means displays the first caption data block C l on the monitor 20
  • step T31 the process proceeds to step T12 for the second caption data block C2
  • an audio replay instruction is made on the instruction input means 10 (step T41 )
  • the microcomputer 1 1 reads out the starting memory address SADDRfA l ] of the first audio data block and the memory address EADDRfAl ]+B of audio data corresponding to the receiving time of the EDM code from the memory 1 8 in step T51
  • the EOC code and the EDM code are used for recording closed captions and audio signals in the Pop-On caption mode
  • other caption control codes can be used to get the starting and ending time of spoken dialogue in the Paint-On or the Roll-Up caption mode
  • the Resume Direct Captioning (RDC) code and the EDM code can be used and in the Roll-Up caption mode
  • the Resume Roll Up (RU) code and the EDM(or CR) code can be used
  • the method and apparatus for recording and replaying caption data and audio data can record and replay the caption data blocks and the audio data blocks containing only spoken dialogs corresponding to the caption data blocks
  • a user can scan caption data blocks, select a caption data block and replay the audio data block corresponding to the selected caption data block.
  • this apparatus helps the user learn a language by both reading the caption data blocks and hearing the spoken dialogs corresponding to the caption data blocks repeatedly.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Studio Circuits (AREA)
  • Television Systems (AREA)

Abstract

Dans un procédé et un appareil d'enregistrement et de relecture de données de sous-titres et de données audio, on utilise des codes de contrôle de sous-titres fermés et la synchronisation de ces derniers pour commander l'aspect des blocs de données de sous-titres sur l'écran. En fonction de la synchronisation des codes de contrôle des sous-titres, des blocs de données audio contenant uniquement des dialogues parlés correspondant aux blocs de données de sous-titres peuvent être enregistrés. Lorsque le code de contrôle des sous-titres indiquant l'affichage des sous-titres est reçu, l'appareil commence à stocker dans une mémoire des données audio et marque la dernière adresse mémoire du bloc de données de sous-titres stockée et l'adresse mémoire de début du bloc de données audio. Lorsque le code de contrôle de sous-titres indiquant l'effacement des sous-titres est reçu, l'appareil marque la dernière adresse mémoire du bloc de données audio. La répétition de ces processus permet d'enregistrer des blocs de données de sous-titres et des blocs de données audio. En fonction des adresses mémoire marquées, l'appareil relit les blocs de données de sous-titres stockés et les blocs de données audio correspondant aux blocs de données de sous-titres.
PCT/KR2001/000223 2000-03-16 2001-02-15 Procede et appareil d'enregistrement et de relecture de donnees de sous-titres et de donnees audio WO2001069920A1 (fr)

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JP2001566546A JP3722750B2 (ja) 2000-03-16 2001-02-15 キャプションデータと音声データの再生方法およびこれを利用したディスプレー装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2000-13478 2000-03-16
KR1020000013478A KR100341030B1 (ko) 2000-03-16 2000-03-16 캡션 데이터와 음성 데이터의 재생방법 및 이를 이용한 디스플레이장치

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JP2007522596A (ja) 2004-02-10 2007-08-09 エルジー エレクトロニクス インコーポレーテッド 記録媒体及びテキスト・サブタイトル・ストリームのデコード方法と装置
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CN100385934C (zh) * 2004-12-10 2008-04-30 凌阳科技股份有限公司 以字幕对应时间作为影音播放起讫点的控制方法与影音播放装置
CN100389607C (zh) * 2006-05-26 2008-05-21 深圳创维－Rgb电子有限公司 由屏幕菜单式调节方式实现隐藏式字幕显示的方法
CN101222592B (zh) * 2007-01-11 2010-09-15 深圳Tcl新技术有限公司 封闭式字幕显示装置与方法
JP4946874B2 (ja) * 2008-01-09 2012-06-06 ソニー株式会社 再生装置および再生方法
US20130127908A1 (en) * 2011-11-22 2013-05-23 General Instrument Corporation Method and apparatus for dynamic placement of a graphics display window within an image
CN102665051A (zh) * 2012-04-06 2012-09-12 安科智慧城市技术（中国）有限公司 基于嵌入式系统的播放终端及其字幕显示方法、系统
CN108040277B (zh) 2017-12-04 2020-08-25 海信视像科技股份有限公司 针对解码后得到的多语种字幕的字幕切换方法及装置
CN109062537B (zh) * 2018-08-30 2021-07-30 倪兴炜 一种音频延迟的降低方法、装置、介质及设备

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CN1418427A (zh) 2003-05-14
KR20010091613A (ko) 2001-10-23

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