KR950013238A - Slow playback method and apparatus of video signal - Google Patents

Slow playback method and apparatus of video signal Download PDF

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KR950013238A
KR950013238A KR1019930021307A KR930021307A KR950013238A KR 950013238 A KR950013238 A KR 950013238A KR 1019930021307 A KR1019930021307 A KR 1019930021307A KR 930021307 A KR930021307 A KR 930021307A KR 950013238 A KR950013238 A KR 950013238A
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video signal
signal
storage area
playback speed
video
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KR1019930021307A
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Korean (ko)
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KR960000686B1 (en
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김영운
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배순훈
대우전자 주식회사
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명에 의한 영상신호의 슬로우재생방법 및 장치는 아날로그/디지탈 변환부, 데이타 압축부, 저장수단, 데이타 복원부, 디지탈/아날로그 변환부, 키입력부 및 제어부로 구성되어, TV 수상기에 있어서 안테나로 통해 입력되는 방송신호 중 디지탈 신호처리된 영상신호의 저장 및 독출간격을 제어함으로써 사용자가 원하는 재생속도로 슬로우재생이 가능하도록 한 것이다.The slow playback method and apparatus of a video signal according to the present invention comprises an analog / digital converter, a data compression unit, a storage means, a data recovery unit, a digital / analog converter, a key input unit, and a controller. By controlling the storage and reading interval of the digital signal processed video signal of the broadcast signal input through the user to enable slow playback at the desired playback speed.

Description

영상신호의 슬로우재생방법 및 장치Slow playback method and apparatus of video signal

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 의한 영상신호의 슬로우재생장치의 일실시예를 나타낸 블럭도.1 is a block diagram showing an embodiment of a slow reproducing apparatus of a video signal according to the present invention.

제2a 및 2b도는 제1도에 있어서 제어부로부터 출력되는 제1클럭신호(CLK1) 및 제2클럭신호(CLK2)의 파형도를 나타낸 도면.2A and 2B show waveform diagrams of the first clock signal CLK1 and the second clock signal CLK2 output from the control part in FIG.

제3도는 본 발명에 의한 영상신호의 슬로우재생장치의 다른 실시예를 나타낸 블럭도.3 is a block diagram showing another embodiment of a slow playback apparatus of a video signal according to the present invention.

제4a 내지 4c도는 제3도에 있어서 제어부로부터 출력되는 제1클럭신호(CLK1 ), 제2클럭신호(CLK2) 및 제3클럭신호(CLK3)의 파형도를 나타낸 도면.4A to 4C are waveform diagrams of the first clock signal CLK1, the second clock signal CLK2, and the third clock signal CLK3 output from the controller in FIG. 3.

Claims (7)

입력되는 영상신호를 슬로우모드로 재생하는 방법에 있어서, 사용자가 영상신호의 슬로우재생속도를 설정하는 단계; 수신 안테나를 통해 입력되는 방송신호중 영상신호를 출화 가능하도록 신호처리하는 단계; 상기 신호처리 단계에서 신호처리된 영상신호를 재차 디지탈 신호처리한 후 상기 슬로우재생속도 설정단계에서 설정된 슬로우재생속도에 따라서 복수개의 저장영역에 저장 및 독출되는 간격을 제어하는 단계를 포함함을 특징으로 하는 영상신호의 슬로우재생방법.A method of reproducing an input video signal in a slow mode, the method comprising: setting a slow reproduction speed of a video signal by a user; Signal processing to enable a video signal among broadcast signals input through the receiving antenna; And digitally processing the image signal processed in the signal processing step and controlling the intervals stored and read in the plurality of storage areas according to the slow playback speed set in the slow playback speed setting step. Slow playback method of a video signal to be played. 제1항에 있어서, 상기 복수개의 저장영역에 저장 및 독출되는 간격을 제어하는 단계는 사용자가 설정한 슬로우재생속도가 정상재생속도보다 N배 느린 경우에는 상기 저장영역중 제1저장영역에 저장된 영상신호가 (60/N)Hz의 주파수를 갖는 제1클럭신호에 의해 독출되고, 상기 제1저장영역으로부터 독출되는 영상신호중 제2저장영역에 저장된 영상신호가 상기 제1클럭신호보다 1/60초 지연된 제2클럭신호에 의해 독출되고, 제(N-1)저장영역으로부터 독출되는 영상신호중 제N저장영역에 저장된 영상신호가 제(N-1)클럭 신호보다 1/60초 지연된 제N클럭신호에 의해 독출됨을 반복하도록 제어함을 특징으로 하는 영상신호의 슬로우재생방법.The method of claim 1, wherein the controlling of the intervals stored and read in the plurality of storage areas comprises: storing the image stored in the first storage area among the storage areas when the slow playback speed set by the user is N times slower than the normal playback speed. The video signal is read by the first clock signal having a frequency of (60 / N) Hz, and the video signal stored in the second storage area among the video signals read out from the first storage area is 1/60 second than the first clock signal. The Nth clock signal read out by the delayed second clock signal and the video signal stored in the Nth storage area among the video signals read out from the (N-1) th storage area is delayed 1/60 second from the (N-1) th clock signal. And controlling to repeat reading by the video signal. 입력되는 방송신호중 영상신호를 출화시킬 수 있도록 신호처리하기 위한 영상신호처리수단을 구비한 TV 수상기에 있어서, 사용자가 설정한 재생속도에 해당하는 명령어를 입력하여 전기적인 신호로 변환하기 위한 키입력부, 상기 신호처리된 영상신호가 상기 키입력부를 통해 설정된 재생속도로 재생되도록 복수개의 제어신호를 출력하기 위한 제어부, 상기 신호처리된 영상신호를 디지탈 영상신호로 변환하기 위한 아날로그/디지탈 변환부; 양자화, 이산코사인변환 및 가변길이 부호화 등의 과정을 통해 상기 아날로그/디지탈변환부에서 출력되는 디지탈 영상신호를 압축하기 위한 데이타 압축부; 상기 데이타 압축부의 출력신호를 소정시간동안 저장하고 상기 제어부로부터 출력되는 복수개의 제어신호에 의해 교번적으로 독출하기 위한 저장수단; 가변길이 복호화, 역양자화 및 역이산코사인변환 등의 과정을 통해 상기 저장수단으로부터 독출되는 영상신호를 원래의 영상신호로 복원하기 위한 데이타 복원부; 상기 데이타 복원부에서 출력되는 디지탈 영상신호를 아날로그 영상신호로 변환하기 위한 디지탈/아날로그 변환부를 포함함을 특징으로 하는 영상신호의 슬로우재생장치.In the TV receiver having a video signal processing means for processing the video signal out of the broadcast signal is input, the key input unit for inputting a command corresponding to the playback speed set by the user to convert into an electrical signal; A controller for outputting a plurality of control signals such that the signal processed video signal is reproduced at a set playback speed through the key input unit, and an analog / digital converter for converting the signal processed video signal into a digital video signal; A data compressor for compressing the digital video signal output from the analog / digital converter through quantization, discrete cosine transform, variable length encoding, and the like; Storage means for storing the output signal of the data compression unit for a predetermined time and reading out alternately by a plurality of control signals output from the control unit; A data restoring unit for restoring the video signal read out from the storage unit to the original video signal through a process of variable length decoding, inverse quantization and inverse discrete cosine transform; And a digital / analog converter for converting the digital video signal output from the data recovery unit into an analog video signal. 제3항에 있어서, 상기 제어부는 상기 키입력부로부터 사용자가 설정한 슬로우재생속도가 정상재생속도보다 N배 느린 경우에는 상기 저장수단의 제1저장영역에 저장된 영상신호를 (60/N)Hz의 주파수를 갖는 제1클럭신호에 의해 독출하고, 상기 제1저장영역으로부터 독출되는 영상신호중 제2저장영역에 저장된 영상신호를 상기 제1클럭신호보다 1/60초 지연된 제2클럭신호에 의해 독출하고, 제(N-1)저장영역으로부터 독출되는 영상신호중 제N저장영역에 저장된 영상신호를 제(N-1)클럭신호보다 1/60초 지연된 제N클럭 신호에 의해 독출함을 반복하도록 제어함을 특징으로 하는 영상신호의 슬로우재생방법.4. The apparatus of claim 3, wherein the controller is further configured to output an image signal stored in the first storage area of the storage means to (60 / N) Hz when the slow playback speed set by the user from the key input unit is N times slower than the normal playback speed. Read out by a first clock signal having a frequency, and read out a video signal stored in a second storage area among the video signals read out from the first storage area by a second clock signal delayed 1/60 second from the first clock signal. And repeats the video signal stored in the Nth storage area among the video signals read out from the (N-1) th storage area by the Nth clock signal delayed 1/60 second from the (N-1) th clock signal. Slow playback method of a video signal characterized in that. 제3항에 있어서, 상기 저장수단은 상기 키입력부로부터 사용자가 설정한 슬로우재생속도가 정상재생 속도의 N배인 경우 (60/N)Hz의 N개의 클럭신호가 각각 인가되는 N개의 FIFO로 구성됨을 특징으로 하는 영상신호의 슬로우재생방법.4. The method of claim 3, wherein the storage means comprises N FIFOs to which N clock signals of (60 / N) Hz are respectively applied when the slow playback speed set by the user from the key input unit is N times the normal playback speed. A slow playback method of a video signal characterized by the above-mentioned. 제5항에 있어서, 상기 N개의 클럭신호는 각각 제(N-1)클럭신호에 대하여 1/60초 지연된 신호임을 특징으로 하는 영상신호의 슬로우재생방법.6. The slow reproduction method of claim 5, wherein the N clock signals are delayed by 1/60 second with respect to the (N-1) th clock signal. 제6항에 있어서, 상기 N개의 FIFO중 제1FIFO은 1분 동안 디스플레이될 수 양의 영상신호를 저장할 수 있고, 나머지 (N-1)개의 FIFO은 1/60초 동안 디스플레이될 수 양의 영상신호를 저장할 수 있음을 특징으로 하는 영상신호의 슬로우재생방법.7. The method of claim 6, wherein the first FIFO of the N FIFOs can store a number of video signals that can be displayed for 1 minute, and the remaining (N-1) FIFOs can be displayed for 1/60 seconds. Slow playback method of a video signal, characterized in that the storage. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930021307A 1993-10-14 1993-10-14 Image-signal slow reading apparatus and the method therefor KR960000686B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100310778B1 (en) * 1998-11-25 2001-11-15 전주범 Method for providing special playback service in video on demand service
KR100310777B1 (en) * 1998-11-25 2001-11-15 전주범 Method for providing special playback service of video on demand service in interlaced mode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100310778B1 (en) * 1998-11-25 2001-11-15 전주범 Method for providing special playback service in video on demand service
KR100310777B1 (en) * 1998-11-25 2001-11-15 전주범 Method for providing special playback service of video on demand service in interlaced mode

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