KR970076647A - Digital V-Cyl's variable speed regenerator - Google Patents

Digital V-Cyl's variable speed regenerator Download PDF

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Publication number
KR970076647A
KR970076647A KR1019960015780A KR19960015780A KR970076647A KR 970076647 A KR970076647 A KR 970076647A KR 1019960015780 A KR1019960015780 A KR 1019960015780A KR 19960015780 A KR19960015780 A KR 19960015780A KR 970076647 A KR970076647 A KR 970076647A
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KR
South Korea
Prior art keywords
data
variable speed
shift
reproduction
speed change
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KR1019960015780A
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Korean (ko)
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KR100192346B1 (en
Inventor
박태준
조중권
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구자홍
Lg 전자주식회사
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Priority to KR1019960015780A priority Critical patent/KR100192346B1/en
Publication of KR970076647A publication Critical patent/KR970076647A/en
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Publication of KR100192346B1 publication Critical patent/KR100192346B1/en

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Classifications

    • 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
    • G11B27/3027—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 digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • G11B15/1875—Driving of both record carrier and head adaptations for special effects or editing
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1806—Pulse code modulation systems for audio signals
    • G11B20/1809—Pulse code modulation systems for audio signals by interleaving
    • 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
    • H04N5/7824—Television signal recording using magnetic recording on tape with rotating magnetic heads
    • H04N5/7826—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape
    • H04N5/78263—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape for recording on tracks inclined relative to the direction of movement of the tape
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

DVCR의 변속재생장치가 개시된바, 테이프의 헬리컬트랙상에 변속데이타를 정확하게 기록하지 않을 경우 변속재생이 어려우며, 변속데이타의 기록위치가 서로 다르게 기록되어야 하기 때문에 멀티플렉싱이 매우 복잡해지는 문제점이 제기되어 이를 해결하기 위하여 첫째, 디지탈 영상신호 기록시 헬리컬헤드에 의해 테이프트랙상의 동일 위치에 기록된 변속데이타를 변속재생시 리니어 헤드를 사용하여 쉽게 변속재생이 가능하도록 하고 또한, MPEG 디지탈 영상신호를 기록재생시, 모든 영상의 기준영상이 되는 I프레임의 전체 또는 일부를 검출하여 이를 분할하고 분할된 데이타를 각 헬리컬 트랙의 동일 위치에 기록하여 변속재생시 리니어 헤드를 사용하여 쉽게 변속재생을 구현하도록 하여 변속데이타의 멀티플렉싱을 매우 간단하게 하였다.When the variable speed reproduction apparatus of the DVCR is disclosed, it is difficult to perform the variable speed reproduction on the helical track of the tape when the speed change data is not accurately recorded. Since the recording positions of the speed change data must be recorded differently, multiplexing becomes very complicated, In order to solve the problem, firstly, when the speed change data recorded at the same position on the tape track by the helical head during the digital video signal recording is reproduced by the linear head, All or a part of an I frame serving as a reference image of all images is detected and divided, and the divided data is recorded at the same position of each helical track, so that the variable speed reproduction can be easily implemented using the linear head during variable speed reproduction, Multiplexing of the < / RTI >

둘째, MPEG 디지탈 영상신호입력시 I프레임의 일부 또는 전체를 검출하여 이를 분할하고, 각 헬리컬 트랙의 동일 위치에 기록하되 많은 I프레임를 기록하기 위해 I프레임의 데이타량를 감소시켜 기록하며, 변속재생시 많은 I프레임을 재생시켜 자연스러운 변속화상을 구현할 수 있는 효과가 있다.Secondly, when inputting an MPEG digital video signal, a part or all of an I frame is detected and divided, and the data of the I frame is recorded to record a lot of I frames at the same position of each helical track. There is an effect that a natural shifted image can be realized by reproducing the I frame.

Description

디지탈 브이 씨 알의 변속재생장치Digital V-Cyl's variable speed regenerator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 본 발명의 제1실시예에 따른 DVCR의 변속데이타 기록 및 재생장치를 나타낸 블록 구성도, 제3도는 본 발명에 따른 테이프의 트랙 구성도, 제4도는 본 발명의 제2실시예에 따른 DVCR의 변속데이타 기록 및 재생장치를 나타낸 블록 구성도.FIG. 2 is a block diagram of a variable speed data recording and reproducing apparatus of a DVCR according to a first embodiment of the present invention. FIG. 3 is a track configuration diagram of a tape according to the present invention. FIG. 1 is a block diagram showing a variable-speed data recording and reproducing apparatus of a DVCR according to an embodiment of the present invention; FIG.

Claims (5)

디지탈 방송신호를 기록하고 변속재생이 가능한 DVCR에 있어서, 입력되는 디지탈 영상신호를 정상재생용 데이타 및 변속재생용 데이타로 분리하여 주는 디지탈데이타 처리수단과; 상기 변속재생용 데이타를 n번째 트랙까지 동일위치상에 헬리컬헤드로 기록하는 기록수단과; 상기 헬리컬트랙의 동일 위치에 기록된 변속데이타를 리니어헤드를 이용하여 재생하는 재생수단과; 상기 변속데이타의 기록위치를 제어하는 제어수단을 포함하여 이루어짐을 특징으로 하는 DVCR의 변속재생장치.A DVCR capable of recording digital broadcast signals and performing variable speed reproduction, comprising: a digital data processing means for separating input digital video signals into normal playback data and variable speed playback data; Recording means for recording the data for variable speed reproduction on a helical head on the same position up to the nth track; Reproducing means for reproducing the transmission data recorded at the same position of the helical track using a linear head; And control means for controlling the recording position of the speed change data. 제1항에 있어서, 입력되는 디지탈영상신호의 전송패킷에 대한 세미-디코딩을 수행하여 변속데이타의 시작위치를 검출하는 시스템 디코더 및 변속데이타 시작코드 검출수단과; 상기 시스템 디코더 및 변속데이타 시작코드 검출수단에서 출력되는 압축된 변속데이타를 신장하는 VLD; 상기 신장된 변속데이타의 전체 또는 일부 데이타를 추출하는 변속데이타 추출수단; 상기 추출된 변속데이타를 일시 저장하는 제2저장수단; 상기 시스템 디코더 및 변속데이타 시작코드 검출수단에서 제공되는 패킷화정보에 의해 상기 제2저장수단에 저장된 변속데이타를 인식가능한 포맷으로 인코딩하고 싱크, ID, 패리티가 부가된 싱크 블록 포맷으로 만드는 패킷화 및 싱크 블록 포맷수단을 더 부가함을 특징으로 하는 DVCR의 변속재생장치.The system of claim 1, further comprising: a system decoder and a shift data start code detection unit for detecting the start position of the shift data by performing semi-decoding on a transmission packet of an input digital video signal; A VLD for expanding the compressed shift data output from the system decoder and the shift data start code detection means; A shift data extracting means for extracting all or some data of the elongated shift data; Second storage means for temporarily storing the extracted shift data; Packetizing the speed change data stored in the second storage means in a recognizable format by the packetization information provided by the system decoder and the speed change data start code detecting means and converting the speed change data into a sync block format having sync, Wherein the sync block formatting means further comprises a sync block formatting means. 제1항에 있어서, 입력되는 디지탈 영상신호중에서 정상속도의 재생용 데이타를 추출하여 싱크블록 포맷으로 바꾸는 정상재생용 데이타 처리수단; 상기 싱크블록 포맷을 일시 저장하는 제1저장수단; 상기 제1저장수단에 저장된 정상재생용 데이타 포맷과 변속재생용 데이타를 상기 제어수단의 일 선택제어신호에 따라 선택출력 하는 다중화 수단을 부가함을 특징으로 하는 DVCR의 변속재생장치.The apparatus according to claim 1, further comprising: normal reproduction data processing means for extracting reproduction data at a normal speed from input digital image signals and converting the reproduction data into a sync block format; First storing means for temporarily storing the sync block format; And multiplexing means for selectively outputting the normal reproduction data format and the data for variable speed reproduction stored in the first storage means in accordance with one selection control signal of the control means. 제1항에 있어서, 제어수단은 시스템전체를 제어하는 시스템 제어부와; 테이프의 주행속도 신호를 발생하여 테이프의 변속을 제어하는 변속 타이밍 제어부로 이루어짐을 특징으로 하는 DVCR의 변속재생장치.The system according to claim 1, wherein the control means comprises: a system control unit for controlling the entire system; And a shift timing controller for controlling the shift of the tape by generating a running speed signal of the tape. 제1항에 있어서, 변속데이타는 MPEG데이타 중에서 I-프레임 데이타만을 추출하는 것을 특징으로 하는 DVCR의 변속재생장치.The variable speed playback apparatus of claim 1, wherein the shift data extracts only I-frame data from the MPEG data. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960015780A 1996-05-13 1996-05-13 Speed change device for a digital vcr KR100192346B1 (en)

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KR1019960015780A KR100192346B1 (en) 1996-05-13 1996-05-13 Speed change device for a digital vcr

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Application Number Priority Date Filing Date Title
KR1019960015780A KR100192346B1 (en) 1996-05-13 1996-05-13 Speed change device for a digital vcr

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KR970076647A true KR970076647A (en) 1997-12-12
KR100192346B1 KR100192346B1 (en) 1999-06-15

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