KR100608454B1 - A moving picture recording and/or reproduction apparatus using key frame - Google Patents

A moving picture recording and/or reproduction apparatus using key frame Download PDF

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Publication number
KR100608454B1
KR100608454B1 KR1019990045297A KR19990045297A KR100608454B1 KR 100608454 B1 KR100608454 B1 KR 100608454B1 KR 1019990045297 A KR1019990045297 A KR 1019990045297A KR 19990045297 A KR19990045297 A KR 19990045297A KR 100608454 B1 KR100608454 B1 KR 100608454B1
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moving picture
data stream
key frame
recording
representative
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KR1019990045297A
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Korean (ko)
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KR20010037647A (en
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조재문
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삼성전자주식회사
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Priority to KR1019990045297A priority Critical patent/KR100608454B1/en
Priority to GB0024778A priority patent/GB2357626B/en
Priority to JP2000314295A priority patent/JP3494972B2/en
Priority to CNB001314637A priority patent/CN1177471C/en
Priority to DE10051637A priority patent/DE10051637B4/en
Publication of KR20010037647A publication Critical patent/KR20010037647A/en
Priority to US10/300,874 priority patent/US6801294B2/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/40—Scenes; Scene-specific elements in video content
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3081—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is a video-frame or a video-field (P.I.P)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/326—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is a video-frame or a video-field (P.I.P.)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B2020/10916—Seeking data on the record carrier for preparing an access to a specific address
    • G11B2020/10925—Seeking data on the record carrier for preparing an access to a specific address involving an inter-layer jump, i.e. changing from one recording layer to another

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Television Signal Processing For Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)

Abstract

키프레임을 이용한 동화상기록장치는, 기록매체; 및 입력하는 동화상데이터스트림중에서 장면변화(scene change)가 일어날 때 검출되는 그 대표화면의 위치 및 상기 동화상데이터스트림을 상기 기록매체에 기록하는 기록수단을 포함한다. 또한, 키프레임을 이용한 동화상재생장치는, 부호화된 동화상데이터스트림과 그 동화상데이터스트림중에서 장면변화가 일어날 때의 그 대표화면의 위치가 기록된 기록매체; 및 상기 기록매체에 기록된 대표화면의 위치를 탐색하여 그 대표화면을 재생하는 재생수단을 포함한다. 여기서, 전술의 대표화면은 키프레임(key frame)이 바람직하다. 이로써, 본 발명은 부호화된 동화상데이터스트림을 기록시에는 장면변화를 대표하는 키프레임을 검출하여 그 위치를 마크해두고, 트릭모드재생시에는 마크된 키프레임의 위치를 탐색하여 키프레임만을 고속으로 재생함으로써, 동화상콘텐츠의 전체시나리오를 용이하게 파악할 수 있게 한다. 그러므로, 본 발명에 따른 동화상기록 및/또는 재생장치를 이용하는 사용자에게는 전체시나리오를 감상하는 도중 원하는 장면에서 정상재생모드로 전환함으로써 사용상 편리하면서도 시청만족도가 월등하게 향상된다. A moving picture recording apparatus using key frames includes: a recording medium; And recording means for recording the moving picture data stream on the recording medium and the position of the representative screen detected when a scene change occurs in the input moving picture data stream. Also, a moving picture reproducing apparatus using a key frame includes: a recording medium in which a position of a representative picture when a scene change occurs in an encoded moving picture data stream and the moving picture data stream is recorded; And playback means for searching for the position of the representative picture recorded on the recording medium and reproducing the representative picture. Here, the representative screen described above is preferably a key frame. Thus, in the present invention, when recording an encoded moving image data stream, keyframes representing scene changes are detected and their positions are marked, and in trick mode playback, the position of the marked keyframes is searched to reproduce only keyframes at high speed. This makes it possible to easily grasp the entire scenario of the moving image content. Therefore, the user using the moving picture recording and / or reproducing apparatus according to the present invention improves viewing satisfaction with ease of use by switching to the normal playback mode from a desired scene while viewing the entire scenario.

Description

키프레임을 이용한 동화상 기록 및/또는 재생장치{A moving picture recording and/or reproduction apparatus using key frame}A moving picture recording and / or reproduction apparatus using key frame}

도 1은 본 발명의 바람직한 일실시예에 따른 키프레임을 이용한 동화상 기록 및/또는 재생장치를 나타낸 구성도.1 is a block diagram showing a moving picture recording and / or playback apparatus using a key frame according to an embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 키프레임검출및마크부 12 : 기록처리부10: key frame detection and mark unit 12: recording processing unit

14 : 기록매체 16 : 키프레임위치탐색부14: recording medium 16: key frame position search unit

18 : 재생처리부18: playback processing unit

본 발명은 키프레임을 이용한 동화상 기록 및/또는 재생장치에 관한 것으로서, 보다 구체적으로는, 부호화된 동화상데이터스트림을 기록시에는 장면변화를 대표하는 키프레임을 검출하여 그 위치를 마크해두고 트릭모드재생시에는 마크된 키프레임의 위치를 탐색하여 키프레임을 고속으로 재생함으로써, 동화상콘텐츠의 전체시나리오를 편리하면서도 만족스럽게 파악할 수 있게 하는 동화상 기록 및/또는 그 재생 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving picture recording and / or reproducing apparatus using a key frame. More specifically, when recording an encoded moving picture data stream, a key mode representing a scene change is detected and the location is marked and the trick mode is displayed. The present invention relates to a moving picture recording and / or a reproducing apparatus which makes it possible to grasp the entire scenario of moving picture contents conveniently and satisfactorily by searching for the position of a marked key frame and reproducing the key frame at high speed.

종래의 동화상기록방식에서는 소정의 동화상데이터스트림을 그대로 기록매체에 기록하며, 그 동화상재생방식에서는 기설정된 배속별로 정속재생(1배속)/고속재생(2배속,4배속,6배속 등)한다. In a conventional moving picture recording method, a predetermined moving picture data stream is recorded as it is on a recording medium. In the moving picture reproducing method, constant speed reproduction (1x speed) / high speed reproduction (2x speed, 4x speed, 6x speed, etc.) is performed for each preset speed.

하지만, 전술한 종래의 동화상 기록 및 재생방식에서는 그 재생모드가 기설정된 여러 배속들중의 하나로 고정되어 있으므로, 동화상데이터스트림중에서 사용자가 원하는 대표화면만을 효율적으로 재생할 수 없었다. 보다 구체적으로, 종래의 방식에서는 기설정된 배속들중의 하나로만 재생할 수 있으므로 관심이 없는 장면을 반복해서 시청해야 하거나 관심있는 장면을 놓치게 되는 경우가 많다. 그러므로, 종래의 방식은 사용자가 소정의 동화상(일례로 영화타이틀)콘텐츠의 전체 시나리오만을 검색하다가 원하는 장면에서 정속재생할 수 없어 사용자의 만족도를 크게 저감시킨다. However, in the above-described conventional moving picture recording and reproducing method, since the reproducing mode is fixed at one of several preset speeds, it is not possible to efficiently reproduce only the representative picture desired by the user in the moving picture data stream. More specifically, in the conventional method, since only one of the preset speeds can be reproduced, it is often necessary to repeatedly watch a scene that is not of interest or miss a scene of interest. Therefore, the conventional method greatly reduces the user's satisfaction because the user can search only the entire scenario of the predetermined moving image (eg, the movie title) content and cannot play it at the desired scene at constant speed.

이러한 문제점을 개선하기 위하여, 미리 기록된 동화상콘텐츠를 시청하면서 원하는 장면마다를 사용자가 직접 마크해두고 이후에 그 마크된 위치를 재생하는 방식이 제안되었으나, 사용자가 일일이 수동으로 조작해야 하므로 사용상 매우 번거로울 뿐더러, 실시간으로 입력되는 동화상의 전체시나리오를 대표하는 화면만을 정확하게 마크하기가 용이하지 않다는 문제점을 여전히 갖는다. In order to remedy this problem, it has been proposed to mark the desired scenes manually while playing pre-recorded moving picture contents and to play the marked positions afterwards, but it is very cumbersome to use them. In addition, there is still a problem that it is not easy to accurately mark only the screen representing the entire scenario of a moving image input in real time.

전술한 문제점들을 모두 해결하기 위한 본 발명의 목적은, 입력되는 동화상데이터스트림중에서 전체 시나리오를 추정할 수 있는 대표화면의 위치를 자동으로 더 기록해주는 동화상기록장치를 제공함에 있다. SUMMARY OF THE INVENTION An object of the present invention is to provide a moving picture recording apparatus for automatically recording a position of a representative screen capable of estimating an entire scenario in an input moving picture data stream.                         

전술한 문제점들을 해결하기 위한 본 발명의 다른 목적은, 전술한 동화상기록장치에 의해 기록된 대표화면의 위치를 자동으로 탐색하여 그 대표화면을 고속으로 재생함으로써 기록된 동화상의 전체시나리오를 사용자가 용이하게 파악할 수 있게 하는 동화상재생장치를 제공함에 있다.Another object of the present invention for solving the above-mentioned problems is to automatically search the position of the representative screen recorded by the above-described moving picture recording apparatus and to reproduce the representative screen at high speed, thereby allowing the user to easily play the entire scenario of the recorded moving picture. The present invention provides a moving picture reproducing apparatus that can be easily understood.

전술의 목적을 달성하기 위한 본 발명의 동화상기록장치는, 기록매체; 및 입력하는 동화상데이터스트림중에서 장면변화(scene change)가 일어날 때 검출되는 그 대표화면의 위치 및 상기 동화상데이터스트림을 상기 기록매체에 기록하는 기록수단을 포함한다. 여기서, 상기 대표화면은 동화상데이터스트림중의 키프레임(key frame)이 바람직하나, 본 발명은 이에 한정되지는 않는다.A moving picture recording apparatus of the present invention for achieving the above object, a recording medium; And recording means for recording the moving picture data stream on the recording medium and the position of the representative screen detected when a scene change occurs in the input moving picture data stream. Here, the representative picture is preferably a key frame in the moving picture data stream, but the present invention is not limited thereto.

전술의 다른 목적을 달성하기 위한 본 발명의 동화상재생장치는, 부호화된 동화상데이터스트림과 그 동화상데이터스트림중에서 장면변화가 일어날 때의 그 대표화면의 위치가 기록된 기록매체; 및 상기 기록매체에 기록된 대표화면의 위치를 탐색하여 그 대표화면만을 재생하는 재생수단을 포함한다. 여기서, 상기 대표화면은 동화상데이터스트림중의 키프레임(key frame)이 바람직하나, 본 발명은 이에 한정되지는 않는다.According to another aspect of the present invention, there is provided a moving picture reproducing apparatus, comprising: a recording medium on which an encoded moving picture data stream and a position of a representative picture when a scene change occurs in the moving picture data stream are recorded; And reproducing means for searching the position of the representative picture recorded on the recording medium and reproducing only the representative picture. Here, the representative picture is preferably a key frame in the moving picture data stream, but the present invention is not limited thereto.

이하, 첨부한 도 1을 참조하여 본 발명의 바람직한 실시예에 따른 동화상기록장치 및 그 동화상재생장치를 상세하게 설명한다. Hereinafter, a moving picture recording apparatus and a moving picture reproduction apparatus according to a preferred embodiment of the present invention will be described in detail with reference to FIG.

도 1의 장치는 키프레임을 이용한 동화상기록장치, 및 키프레임을 이용한 동화상재생장치로 대별된다. The apparatus of Fig. 1 is roughly divided into a moving picture recording device using a key frame and a moving picture reproducing device using a key frame.

키프레임검출및마크부(10) 및 기록처리부(12)를 포함하는 동화상기록수단으로는 부호화된 동화상데이터스트림이 입력된다. 여기서, 부호화된 동화상데이터스트림은 소정의 방송채널을 통해 수신되거나 외부기기로부터, 또는 기록매체로부터 재생되어 입력된다. 키프레임검출및마크부(10)는 입력하는 부호화된 동화상데이터스트림의 부호화규격에 근거하여 장면변화(scene change)의 유무, 및 장면변화가 일어날 때 그 대표화면에 대응하는 키프레임(key frame)의 위치를 검출하여 마크한다. 일례로, 전술의 동화상데이터스트림이 MPEG-부호화규격으로 부호화된 경우, 그 입력하는 동화상데이터스트림의 부호화규격의 인트라프레임(Intra-Frame)의 주기패턴이 그 부호화규격에 따른 정상적인 인트라프레임의 주기패턴으로부터 벗어나는 경우 장면변화가 일어난 것으로 판단하고, 그로부터 최초로 나타나는 인트라프레임을 대표프레임에 대응하는 키프레임(key frame)으로 검출한다. 기록처리부(12)는 대표화면의 위치가 마크된 동화상데이터스트림을 기록매체(14)에 기록한다. 그러므로, 기록매체(14)에는 부호화된 동화상데이터스트림과 함께 장면변화를 대표하는 화면의 위치가 기록된다. 여기서, 키프레임의 위치정보는 기록매체의 별도영역에 구분되게 기록될 수도 있고, 동화상데이터스트림과 함께 기록될 수도 있다. An encoded moving picture data stream is input to the moving picture recording means including the key frame detection and mark section 10 and the recording processing section 12. Here, the encoded moving image data stream is received through a predetermined broadcast channel or reproduced and input from an external device or from a recording medium. The key frame detection and mark unit 10 is based on the encoding standard of the encoded moving picture data stream, and whether or not there is a scene change, and a key frame corresponding to the representative picture when the scene change occurs. Detect and mark the position of. For example, when the above-described moving picture data stream is encoded according to the MPEG-encoding standard, the periodic pattern of the intra-frame of the encoding standard of the input moving picture data stream is a normal intra frame periodic pattern according to the encoding standard. When it is out of the frame, it is determined that a scene change has occurred, and the first intra frame appears therefrom is detected as a key frame corresponding to the representative frame. The recording processing unit 12 records the moving picture data stream in which the position of the representative picture is marked on the recording medium 14. Therefore, the recording medium 14 records the position of the screen representing the scene change together with the encoded moving picture data stream. Here, the position information of the key frame may be recorded separately in a separate area of the recording medium, or may be recorded together with the moving picture data stream.

한편, 키프레임위치탐색부(16) 및 재생처리부(18)를 포함하는 동화상재생수단은, 전술의 기록매체(14)에 기록된 대표화면의 위치정보를 탐색하여 그 대표화면만을 고속으로 재생한다. 구체적으로는, 키프레임위치탐색부(16)는 기록매체(14)의 별도영역에 또는 동화상데이터스트림과 함께 기록된 키프레임의 위치정보를 탐 색한다. 그리고, 재생처리부(18)는 인가되는 재생모드가 전체시나리오를 감상하기 위한 트릭재생모드(trick mode; 고속전진재생모드)인 경우, 키프레임위치탐색부(16)에서 탐색된 키프레임의 위치마다로 점프하여 대응하는 키프레임의 데이터스트림을 독출하고 이를 부호화되기 이전의 영상데이터로 복원하여 화면상에 디스플레이한다. On the other hand, the moving picture reproducing means including the key frame position search section 16 and the playback processing section 18 searches for the position information of the representative picture recorded on the recording medium 14 described above, and reproduces only the representative picture at high speed. . Specifically, the key frame position search unit 16 searches the position information of the key frame recorded in the separate area of the recording medium 14 or together with the moving image data stream. When the playback mode applied is the trick playback mode (fast forward playback mode) for viewing the entire scenario, the playback processing unit 18 performs each key frame position searched by the key frame position search unit 16. Jumps to and reads the data stream of the corresponding key frame, restores it to the image data before encoding, and displays it on the screen.

이로써, 본 발명에 따른 기록 및/또는 재생장치를 사용하는 사용자는 고속으로 재생되는 동화상콘텐츠의 전체시나리오를 편리하게 파악할 수 있음과 동시에, 원하는 장면에서 정상재생모드로 전환함으로써 상세한 동화상을 감상할 수 있어 사용자의 만족도를 크게 개선한다.Thus, a user using the recording and / or reproducing apparatus according to the present invention can conveniently grasp the entire scenario of the moving image contents reproduced at high speed, and can enjoy the detailed moving image by switching to the normal reproduction mode in a desired scene. It greatly improves user's satisfaction.

한편, 전술한 본 발명의 바람직한 실시예로부터 언급되지 않은 다수의 변형된 실시예들이 도출가능함은, 전술한 본 발명의 기술적 사상 및 바람직한 실시예를 잘 이해할 이 기술분야의 당업자에게는 자명하다.On the other hand, it is apparent to those skilled in the art that a number of modified embodiments which are not mentioned from the above-described preferred embodiments of the present invention can be derived.

전술한 바와 같이 본 발명은, 부호화된 동화상데이터스트림을 기록할 때에는 장면변화를 대표하는 키프레임을 검출하여 그 위치를 기록해두고, 트릭모드재생시에는 기록된 키프레임의 위치를 탐색하여 해당 키프레임만을 고속으로 재생함으로써, 동화상콘텐츠의 전체시나리오를 용이하게 파악할 수 있게 한다. 그러므로, 이러한 본 발명에 따른 동화상 기록 및/또는 재생 장치를 이용하는 사용자에게는 전체시나리오를 감상하는 도중 원하는 장면에서 정상재생모드로 전환함으로써 사용상 매우 편리하면서도 시청만족도가 월등하게 향상된다. As described above, according to the present invention, when recording an encoded moving image data stream, a key frame representing a scene change is detected and the position thereof is recorded. In trick mode playback, the position of the recorded key frame is searched to find only the corresponding key frame. By reproducing at high speed, it is possible to easily grasp the entire scenario of the moving image content. Therefore, for the user using the moving picture recording and / or reproducing apparatus according to the present invention, by switching to the normal playback mode from the desired scene during the entire scenario, the viewing satisfaction is greatly improved while being excellent in use.

Claims (6)

동화상기록장치에 있어서,In a moving picture recording apparatus, 기록매체; Recording media; 입력하는 동화상데이터스트림중에서 장면변화(scene change)가 일어날 때의 대표화면에 대응하는 키프레임(key frame)의 위치를 검출하고, 그 위치를 마크하는 키프레임검출및마크부; 및A key frame detection and mark unit for detecting a position of a key frame corresponding to a representative screen when a scene change occurs in an input moving image data stream and marking the position; And 상기 대표화면의 위치가 마크된 동화상데이터스트림을, 상기 기록매체에 기록하는 기록처리부를 포함하는 동화상기록장치.And a recording processing unit for recording the moving picture data stream in which the position of the representative screen is marked on the recording medium. 삭제delete 제 1항에 있어서, 상기 키프레임검출및마크부는, The method of claim 1, wherein the key frame detection and mark unit, 상기 입력하는 부호화된 동화상데이터스트림의 부호화규격이 MPEG-부호화규격인 경우, 이에 근거하여 그 부호화된 동화상데이터스트림의 부호화규격의 인트라프레임(Intra-Frame)의 주기패턴이 그 부호화규격에 따른 정상적인 인트라프레임의 주기패턴으로부터 벗어나는 경우 장면변화가 일어난 것으로 판단하고, 그로부터 최초인 인트라프레임을 상기 키프레임으로서 검출함을 특징으로 하는 동화상기록장치.When the encoding standard of the input encoded video data stream is an MPEG-encoding standard, an intra-frame periodic pattern of the encoding standard of the encoded video data stream is a normal intra according to the encoding standard. And if it is determined that the scene change has occurred when it deviates from the periodic pattern of the frame, the first intra frame is detected as the key frame from the moving picture recording apparatus. 삭제delete 동화상재생장치에 있어서,In the video playback apparatus, 부호화된 동화상데이터스트림과, 그 동화상데이터스트림중에서 장면변화가 일어날 때의 그 대표화면의 위치가 기록된 기록매체; A recording medium on which the encoded moving picture data stream and the position of the representative picture when a scene change occurs in the moving picture data stream are recorded; 상기 기록매체에 기록된 동화상데이터스트림중의 대표화면에 대응하는 키프레임(key frame)의 위치를 탐색하는 키프레임위치탐색부; 및A key frame position search unit for searching for a position of a key frame corresponding to a representative picture in the moving picture data stream recorded on the recording medium; And 트릭재생모드에서, 상기 키프레임위치탐색부에서 탐색된 상기 키프레임의 위치마다로 점프하여 대응하는 키프레임의 데이터스트림을 독출 및 복원하여 대표화면을 재생하는 재생처리부를 포함하는 동화상재생장치.And a reproducing processing section for reproducing a representative picture by reading and restoring a data stream of a corresponding key frame by jumping to each key frame position found by said key frame position searching unit in a trick reproducing mode. 삭제delete
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