WO1997016018A1 - Dispositif d'extraction d'images, dispositif d'enregistrement/reproduction utilise a cet effet et procede d'extraction d'images - Google Patents

Dispositif d'extraction d'images, dispositif d'enregistrement/reproduction utilise a cet effet et procede d'extraction d'images Download PDF

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Publication number
WO1997016018A1
WO1997016018A1 PCT/JP1995/002211 JP9502211W WO9716018A1 WO 1997016018 A1 WO1997016018 A1 WO 1997016018A1 JP 9502211 W JP9502211 W JP 9502211W WO 9716018 A1 WO9716018 A1 WO 9716018A1
Authority
WO
WIPO (PCT)
Prior art keywords
recording
reproducing
address data
data
image
Prior art date
Application number
PCT/JP1995/002211
Other languages
English (en)
Japanese (ja)
Inventor
Shoji Ohno
Yuzuru Takahashi
Original Assignee
Hitachi, Ltd.
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 Hitachi, Ltd. filed Critical Hitachi, Ltd.
Priority to PCT/JP1995/002211 priority Critical patent/WO1997016018A1/fr
Publication of WO1997016018A1 publication Critical patent/WO1997016018A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus

Definitions

  • the present invention relates to an image / sound recording / reproducing apparatus for recording an image / sound signal, and more particularly to an image search apparatus suitable for searching for an image / sound signal.
  • the present invention relates to a video / audio recording / reproducing apparatus which is suitable for the above. Background art
  • a character code is inserted in the form of a digital signal during a vertical blanking period.
  • a digital signal consisting of 16 bits per H, that is, two characters, is inserted in 21 H (horizontal scanning period). Since the digital signal has a low frequency of about 2 microseconds per bit, it can be easily recorded and reproduced by a video tape recorder used as a home video and audio recording and reproducing device.
  • the present invention considers a character signal as a message and is integrated with the image / audio signal, detects an address in which the character text is recorded, stores the address integrally, and designates the character text.
  • the present invention provides an image search device that can search for an image / audio portion and use it diversifiedly.
  • the closed caption information (Closed Caption) is inserted as a character code in the vertical retrace period of the video signal.
  • subtitle information closely corresponds to the video and audio information in the vicinity, so by reading this subtitle information, it is possible to imagine the contents of the recorded images and sounds.
  • the head address of each sentence of the subtitle information is stored in advance together with the subtitle information, and the user specifies the subtitle text at the time of reproduction, so that the corresponding video / audio portion is searched. Things. Brief description of drawings
  • FIG. 1 is a block diagram showing an embodiment of the image search system of the present invention
  • FIG. 2 is a waveform diagram showing waveforms of a video signal and a text signal output from a recording / reproducing unit.
  • FIG. 3 is a block diagram of a configuration for extracting text data
  • FIG. 4 is a diagram showing a menu screen for operating the system
  • FIG. 5 is a diagram showing execution or interruption of subtitle display.
  • FIG. 6 is a diagram showing a selection display screen
  • FIG. 6 is a diagram showing a screen for displaying text data as characters on a display device
  • FIG. 7 is a diagram showing a selection display screen for executing or interrupting a search.
  • FIG. 8 is a flowchart showing the operation of the image search system shown in FIGS.
  • FIG. 9 is a projection view of the configuration of the image search system of the present invention as viewed from the front.
  • Fig. 10 shows the configuration of the image search system.
  • FIG. 11 is a projection view from the back
  • FIG. 11 is a diagram showing a main screen displayed on a display device
  • FIG. 12 is a diagram showing a configuration of a VCR control button
  • FIG. 14 is a flowchart showing the operation of the image search system shown in FIGS. 9 to 13.
  • FIG. 1 is a block diagram showing an example of an image retrieval system according to the present invention, which includes a recording / reproducing section 1, a decoding section 2, an address detection section 3, a text conversion section 4, an input / output control section 5, and an input / output control section 5.
  • Dress comparison unit 6, recording / playback control unit 7, external input / output control unit 8, display control unit 9, display device 10, central control unit 11, storage unit 12, character input unit 13, and character input device 14 Yotsutsu It is composed.
  • the recording / reproducing unit 1, the decoding unit 2, the address detecting unit 3, the text converting unit 4, the input / output control unit 5, the address comparing unit 6, and the recording / reproducing control unit 7 include the image recording / reproducing device 100. It is provided in.
  • the external input / output control unit 8, the display control unit 9, the display device 10, the central control unit 11, the storage unit 12, the character input unit 13, and the character input device 14 are connected to the external control device 200. Is provided.
  • the image recording / reproducing 100 and the external control device 200 are connected by a data input / output terminal a and a data input / output terminal b, respectively.
  • the outline of the operation of this image input system is as follows.
  • an image signal is output and supplied to the decoding unit 2.
  • the decoding unit 2 decodes the signal in the vertical blanking period as data.
  • a signal to be recorded may be supplied to the decoding unit.
  • the decoded data is converted into text data by the text converter 4 and supplied to the input / output controller 5.
  • the address detection unit 3 detects the address of the image signal in which the data decoded by the decoding unit 2 exists, converts the address into address data, and sends the address data to the input / output control unit 5. Supply.
  • the address data includes, for example, the accumulated recording time from the recording start part of the recording medium used for the recording / reproducing unit 1, the address data recorded on a part of the recording medium, and the relative amount to the total amount of the recording medium. Position data can be used.
  • the input / output control unit 5 converts the address data and the text data converted by the text conversion unit 4 into a data input / output of the external control device 200 via the data input / output terminal a as a pair of data. Supply to output terminal b.
  • This data is taken in by the external input / output control unit 8 and stored in the storage unit 12 as data by the central control unit 11.
  • central control The unit 11 sends this data to the display control unit 9 and causes the display device 10 to display the text data as characters.
  • characters such as alphabets, numbers, and symbols are input to the character input device 14 by the user.
  • the character input to character input device 14 is taken into external control device 200 by character input unit 13.
  • the central control unit 11 gives meaning to the captured characters as described later, and displays the characters on the display device 10.
  • the central control unit 11 recognizes a character from the character input device 14 as a command, extracts the text data from the storage unit 12, displays the text data on the display device 10, and simultaneously displays the address.
  • the data is fetched and transmitted as search address data to be described later from the data input / output terminal b to the image recording / reproducing apparatus 100 via the external input / output control unit 8.
  • the transmitted data is input to the input / output control unit 5 of the image recording / reproducing apparatus 100.
  • the address comparison unit 6 compares the input data with the address data output from the address detection unit 3 to determine a search direction.
  • the recording / reproducing control section 7 changes the reproducing state of the recording / reproducing section 1 in the forward or reverse direction according to the signal from the address comparing section 6 and starts the search. The search ends when the address data matches the search address data.
  • FIG. 8 shows a flowchart for explaining the outline of the operation of the image search system.
  • FIG. 2 shows a video signal and a text signal waveform output from the recording / reproducing unit 1.
  • Vide01 is a video signal
  • Video2 is a signal during a vertical retrace period of the video signal
  • 15 is a text signal during a retrace period
  • Video3 is an enlarged version of the text signal 15 It is.
  • the text signal 15 includes a clock run-in signal section T4 for determining a slice level for extracting the text data, and a text data overnight signal section T5.
  • FIG. 3 shows an example of a block for extracting text data from the text signal 15.
  • 16 is a switch
  • 17 is a timing signal generator
  • 18 is a capacitor
  • 19 is a comparator.
  • the text signal 15 is input from d.
  • Line e has a signal S1 which causes switch 16 to be 0N during clock-run-in T4
  • line f has a signal S1 integrated by capacitor 18 S 2 is output.
  • the text signal 15 input to the lines f and d is compared by the comparator 19, and a signal S3 is obtained for the line g.
  • the signal S3 is 0 1 0 0 0 0 1 1 1 0 0 0 0 0 1 It consists of 16 bits of 1.
  • the signal S3 is a signal superimposed from the least significant bit, and if the most significant bit of each 8 bits is an odd parity bit, the 16 bits are represented by C1 and C2 in hexadecimal notation. It is. Here, the most significant bit of the 8 bits is a parity bit. If the 7 bits other than the liability bit are expressed in hexadecimal notation, they are 4 1 and 4 2. This means the alphabets A and B in ASCII expression.
  • the odd number is displayed because it is 48, 45, 4C4C, and 4F in hexadecimal notation. C 8, 45, 4 C, and 4 F in consideration of the efficiency.
  • This data is continuously superimposed on the text data by two bytes. If there is one set of text data, odd parity is added to 0, which means that no data exists, and 80 is superimposed.
  • This signal S 3 is divided into a text part and other parts by a text conversion part 4 and supplied to an input / output control part 5.
  • the address signal output from the recording / reproducing section 1 is also converted into data by the address detecting section 3 and supplied to the input / output control section 5.
  • the data supplied to the input / output control unit 5 is output as a pair of data of address data and text data via the data input / output terminal a and supplied to the data input / output terminal b of the external control device 200. .
  • a menu screen for guiding the operation of the system is displayed on the display device 10 as shown in FIG.
  • a menu screen for guiding the operation of the system is displayed on the display device 10 as shown in FIG.
  • FIG. As shown in, a display for selecting execution (R) or interruption (K) of subtitle display can be displayed.
  • the above-mentioned pair of address data and text data fetched from the external input / output control unit 8 of the external control device 200 are stored in the area 200 in the storage unit 12 by the central control unit 11.
  • And 21 are stored in the order in which they were entered, and at the same time are displayed as characters on the display device 10 as shown in Fig. 6.
  • the character displayed on the display device 10 is designated and the recording / reproducing unit 1 is designated.
  • the following describes a case in which the head is displayed.
  • the cursor 22 in the display screen moves up and down.
  • the user inputs a search (S) selection from the character input device 14.
  • a display for selecting execution (R) or interruption (K) of the search is displayed as shown in FIG.
  • the central control unit 11 reads the text data corresponding to the desired character display from the area 21 of the storage unit 12.
  • a pair of address data associated with the text data is retrieved from the storage unit 20 and sent to the data input / output terminal b as search address data via the external input / output control unit 8. Is done.
  • the address comparison unit 6 compares the search address data input to the image recording / reproducing device 100 with the address data from the address detection unit 3.
  • the recording / reproducing control unit 7 changes the reproducing state of the recording / reproducing unit 1 as shown below. Change. ⁇ If the search address data is larger than the address data from the address detection unit 3, control is performed so that the recording / reproduction unit 1 performs reproduction in the forward direction.
  • the recording / reproduction unit 1 When the search address data is smaller than the address data from the address detection unit 3, the recording / reproduction unit 1 is controlled to perform reproduction in the reverse direction. • If the search address data is equal to the address data from the address detection unit 3, the recording / reproduction unit 1 terminates the reproduction state in the forward or reverse direction.
  • the search may be performed by high-speed playback.
  • the address comparing section 6 is provided in the image recording / reproducing apparatus 100, but may be provided in the external control apparatus 200.
  • the address data is transmitted from the image recording / reproducing device 100
  • the address comparing section in the external control device 200 compares the address data
  • the control data based on the comparison result is transmitted.
  • the image data is sent from the external control device 200 to the image recording / reproducing device 100
  • the recording / reproducing control unit 7 changes the reproduction state of the recording / reproducing unit 1 in the forward or reverse direction based on the control data.
  • a search may be performed.
  • the system is composed of the image recording / reproducing device 100 and the external control device 200, the system may be an image retrieving device in which each device is integrated. Only part 1 may be provided outside this device.
  • signal waveform of a US teletext is shown here as an example, other waveforms may be used as long as the video signal has text data superimposed thereon.
  • FIG. 9 and FIG. 10 are components of an image retrieval system according to the present invention.
  • Fig. 9 is a front view of the image retrieval system according to the present invention, which is a video cassette recorder (hereinafter, referred to as VCR) 23, a personal computer main unit (hereinafter, referred to as PC) 24, Monitor connected to PC 25, Left speaker 26, Right speaker 27, Character input device connected to PC (hereinafter referred to as keyboard) 28, Input designation device connected to PC ( Hereafter, a mouse) 29, an audio / video connection cable 30 and a VCR control signal connection cable (hereinafter referred to as a control cable) 31 are shown.
  • VCR video cassette recorder
  • PC personal computer main unit
  • PC Monitor connected to PC 25
  • Left speaker 26 Right speaker
  • Character input device connected to PC (hereinafter referred to as keyboard)
  • Input designation device connected to PC ( Hereafter, a mouse) 29, an audio / video connection cable 30 and a VCR control signal connection cable (hereinafter referred to as a control cable) 31 are shown.
  • FIG. 10 is a projection view of the image retrieval system according to the present invention as viewed from the back, where the VCR 23, PC 24, monitor 25, left speaker 26, right speaker 27, PC 24 Video signal capture board built in 4 (hereinafter referred to as video board) 37, Audio signal capture board built in PC 24 (hereinafter referred to as sound board) 3 8, Control cable 3 1, video signal output terminal 40, right audio output terminal 41, left audio output terminal 42, video signal input terminal 43, right audio input terminal 44, and left audio input terminal 45 are shown.
  • video board video board
  • Audio signal capture board built in PC 24 hereinafter referred to as sound board
  • Control cable 3 1 video signal output terminal 40, right audio output terminal 41, left audio output terminal 42, video signal input terminal 43, right audio input terminal 44, and left audio input terminal 45 are shown.
  • the screen 46 shown in FIG. 11 is displayed on the monitor 25.
  • a main screen 47 and sub screens 56 and 60 are displayed.
  • a menu bar 48 with menus arranged, the status display of VCR 23 4 9 (in this case, with cassette 50, power on 51, playback 52, counter 53 Are displayed), a VCR control button 54 for controlling the VCR 23, and a description 55 of the VCR control button are displayed.
  • This main When the subtitle (C) on the menu bar 48 of the screen 47 is selected, a sub screen 56 displaying the subtitle contents is displayed.
  • the sub-screen 56 has a subtitle menu bar 57 for performing operations such as heading described above with reference to FIGS.
  • subtitle menu bar 57 a subtitle content 58 and a scroll bar 59 indicating the position of the subtitle are displayed.
  • the video can be captured from the video board 37 in FIG. 10, and the audio can be captured from the sound board 38 in FIG.
  • This image is displayed on the monitor 25 as a sub screen 60 at the same time as the other screens, and the sound can be output from the left speaker 26 and the right speaker 27.
  • FIG. 12 is an enlarged view of each of the VCR control buttons 54 of FIG.
  • the VCR control buttons 54 include a rewind button 61, a pause button 62, a stop button 63, a play button 64, a fast forward button 65, a power on / off button 66, a recording button 67, and a slow playback button 66.
  • Counter reset button 69 Counter reset button 69, Tape eject button 70, Channel up button 71, Channel down button 72, Input switch button 73, Clock setting button 74, and progress time display at the counter 53
  • a power indicator display switching button 75 for switching between the remaining amount display and the like is provided.
  • FIG. 13 shows the internal configuration of the VCR shown in FIGS. 9 and 10.
  • the VCR is connected to PC 24 by audio signal line 80, video signal line 81, and communication line 30.
  • PC 24 is connected to monitor 25 by monitor-to-monitor connection cable 82.
  • the VCR 23 has a recording / reproducing section 83 for recording and reproducing audio and video, a recording / reproducing control section 84 for controlling the recording / reproducing section 83, and extracting text from a video signal output from the recording / reproducing section 83.
  • An input / output control unit 86 is provided for sending the position (address) information of the tape taken out from the recording / reproduction control unit 84 to the PC 24.
  • the input / output control unit 86 simultaneously controls to take in information from the PC 24 into the VCR 23.
  • the decoding unit 85 and the input / output control unit 86 may be constituted by one microcomputer 87.
  • FIG. 14 shows a flowchart for explaining the outline of the operation of the image retrieval system.
  • the text data decoded by the decoding unit 85 in the VCR 23 is transmitted from the VCR 23 to the PC 24 via the communication line 79, and the text data is stored in the storage device in the PC 24.
  • the operation of storing text data and displaying text data on the monitor 25 will be described.
  • the decoding unit 85 extracts the text information from the video signal and sends it to the input / output control unit 86.
  • the recording / playback control section 84 retrieves the current address data of the tape. Send to I / O controller 86.
  • the input / output control unit 86 associates the text data with the address data and sends it out to the communication line 30.
  • the PC 24 stores the text data in an internal storage device and simultaneously monitors the Display in 5.
  • the text data displayed on the monitor 25 is stored in the storage device of the PC 34 as described above.
  • the user designates desired data from the text data with the keyboard 28 or the mouse 29 in FIG. 9 and retrieves the address data associated with the designated text data from the storage device of the PC 24.
  • the PC 24 always receives the address data of the tape at that time via the communication line 30 from the VCR 23.
  • the PC 24 sends control information for running the cassette tape in a direction in which both addresses coincide with each other to the VCR side via the communication line 30 and stops or reproduces when the two coincide with each other. Done.
  • text data may be compared at the same time.
  • a user can specify a caption text to search for a corresponding image and audio position in a recording / reproducing apparatus such as a VCR.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

Une unité de décodage (2) dans un dispositif d'enregistrement/reproduction (100) décode des données de texte insérées dans une partie de l'intervalle de retour vertical de signaux d'image enregistrés dans une unité d'enregistrement/reproduction (1), et une unité de détection d'adresses (3) de ce même dispositif (100) détecte les données d'adresse de l'unité d'enregistrement/reproduction (1). Dans le cadre de ce processus, un dispositif de contrôle extérieur (200) mémorise les données de texte et les données d'adresse envoyées par le dispositif d'enregistrement/reproduction (100) dans une unité de mémoire (12) sous la forme de données jumelées. Ce dispositif de commande extérieur (200) extrait les données d'adresse correspondant aux données de texte indiquées et les envoie au dispositif d'enregistrement/reproduction (100). Une unité de comparaison d'adresses (6) compare les données d'adresse extraites avec les données d'adresse détectées par l'unité de détection (3). Une unité de commande d'enregistrement/reproduction (7) agit sur le repérage dans l'unité d'enregistrement/reproduction (1).
PCT/JP1995/002211 1995-10-27 1995-10-27 Dispositif d'extraction d'images, dispositif d'enregistrement/reproduction utilise a cet effet et procede d'extraction d'images WO1997016018A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1995/002211 WO1997016018A1 (fr) 1995-10-27 1995-10-27 Dispositif d'extraction d'images, dispositif d'enregistrement/reproduction utilise a cet effet et procede d'extraction d'images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1995/002211 WO1997016018A1 (fr) 1995-10-27 1995-10-27 Dispositif d'extraction d'images, dispositif d'enregistrement/reproduction utilise a cet effet et procede d'extraction d'images

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WO1997016018A1 true WO1997016018A1 (fr) 1997-05-01

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131691A (ja) * 1983-12-20 1985-07-13 Ricoh Co Ltd ビデオテ−プレコ−ダ
JPS62298874A (ja) * 1986-06-18 1987-12-25 Dainippon Printing Co Ltd デイジタル記録媒体によるビデオデイスク画面の自動検索方法
JPH01133481A (ja) * 1987-11-19 1989-05-25 Sony Corp ビデオディスク再生装置
JPH01229483A (ja) * 1988-03-09 1989-09-13 Sony Corp 映像信号記録装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131691A (ja) * 1983-12-20 1985-07-13 Ricoh Co Ltd ビデオテ−プレコ−ダ
JPS62298874A (ja) * 1986-06-18 1987-12-25 Dainippon Printing Co Ltd デイジタル記録媒体によるビデオデイスク画面の自動検索方法
JPH01133481A (ja) * 1987-11-19 1989-05-25 Sony Corp ビデオディスク再生装置
JPH01229483A (ja) * 1988-03-09 1989-09-13 Sony Corp 映像信号記録装置

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