KR970009389A - Encoding Device of Video Equipment - Google Patents

Encoding Device of Video Equipment Download PDF

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Publication number
KR970009389A
KR970009389A KR1019950023362A KR19950023362A KR970009389A KR 970009389 A KR970009389 A KR 970009389A KR 1019950023362 A KR1019950023362 A KR 1019950023362A KR 19950023362 A KR19950023362 A KR 19950023362A KR 970009389 A KR970009389 A KR 970009389A
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South Korea
Prior art keywords
encoding
distortion value
frame
distortion
signal
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KR1019950023362A
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Korean (ko)
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KR0178225B1 (en
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김경진
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배순훈
대우전자 주식회사
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Priority to KR1019950023362A priority Critical patent/KR0178225B1/en
Publication of KR970009389A publication Critical patent/KR970009389A/en
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Publication of KR0178225B1 publication Critical patent/KR0178225B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/147—Data rate or code amount at the encoder output according to rate distortion criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

본 발명은 영상기기의 부호화장치에 관한 것으로, 프레임간의 차분신호를 근거로 하여 부호화하는 영상기기의 부호화장치에 있어서, 현재 프레임과 예측된 프레임간의 차분신호에 대한 왜곡값과 기설정된 왜곡값의 비교에 의거하여 어느 한 부호화 방식을 선택하는 스위칭 제어신호를 제공하는 왜곡신호 처리수단과, 왜곡신호 처리수단의 비교 결과 프레임간 차분신호에 대한 왜곡값이 기설정된 왜곡값보다 작은 경우에 의거하여 부호화하는 제1부호화 수단과, 왜곡신호 처리수단의 비교 결과 상기 프레임간 차분신호에 대한 왜곡값이 기설정된 왜곡값보다 같거나 큰 경우에 의거하여 부호화하는 제2부호화수단과, 제1,2부호화수단에 의해서 부호화된 데이터를 가변길이 부호화하는 VLC로 이루어짐으로써, 전송채널 용량을 효율적으로 이용하면서도 프레임간 신호대잡음지를 증가시킬 수 있는 효과가 있다.The present invention relates to an encoding apparatus for an image apparatus, and the encoding apparatus for an image apparatus that encodes based on a difference signal between frames, wherein the distortion value for the difference signal between the current frame and the predicted frame is compared with a preset distortion value. According to the comparison between the distortion signal processing means for providing a switching control signal for selecting one coding method and the distortion signal processing means, the distortion value for the difference signal between the frames is smaller than the preset distortion value. A second encoding means for encoding on the basis of the comparison between the first encoding means and the distortion signal processing means on the basis that the distortion value of the inter-frame difference signal is equal to or larger than a preset distortion value; and the first and second encoding means. The VLC which performs variable length coding on the data encoded by the variable length enables efficient use of the transmission channel capacity. There is an effect that can increase the signal to noise between frames.

Description

영상기기의 부호화장치Encoding Device of Video Equipment

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

제2도는 본 발명에 따른 영상기기의 부호화장치도.2 is a diagram illustrating an encoding apparatus of a video device according to the present invention.

Claims (4)

이전프레임과 현재프레임간에 의해서 예측된 프레임과 현재 입력되는 프레임간의 차분신호를 근거로 하여부호화하는 영상기기의 부호화장치에 있어서; 상기 현재 프레임과 예측된 프레임간의 차분신호에 대한 왜곡값과 기설정된왜곡값의 비교에 의거하여 어느 한 부호화 방식을 선택하는 스위칭 제어신호를 제공하는 왜곡신호 처리수단과; 상기 왜곡신호 처리수단의 비교 결과 상기 프레임간 차분신호에 대한 왜곡값이 기설정된 왜곡값보다 작은 경우에 의거하여 부호화하는 제1부호화 수단과; 상기 왜곡신호 처리수단의 비교 결과 프레임간 차분신호에 대한 왜곡값이 기설정된 왜곡값보다 같거나 큰 경우에 의거하여 부호화하는 제2부호화 수단과; 상기 제1,2부호화수단에 의해서 부호화된 데이터를 가변길이 부호화하는 VLC으로 이루어짐을 특징으로 하는 영상기기의 부호화장치.A coding apparatus of a video apparatus encoding on the basis of a difference signal between a frame predicted between a previous frame and a current frame and a frame currently input; Distortion signal processing means for providing a switching control signal for selecting one coding method based on a comparison of a distortion value and a preset distortion value for the difference signal between the current frame and the predicted frame; First encoding means for encoding based on a case where the distortion value for the inter-frame difference signal is smaller than a preset distortion value as a result of the comparison of the distortion signal processing means; Second encoding means for encoding based on a result of the comparison of the distortion signal processing means when the distortion value for the inter-frame difference signal is equal to or greater than a preset distortion value; And a VLC for variable length encoding the data encoded by the first and second encoding means. 제1항에 있어서, 상기 왜곡신호 처리수단은, 현재프레임과 예측된 프레임간의 왜곡값과 기설정된 왜곡값(Th)에 의거하여 어느 한 부호화를 선택하기 위한 스위칭 제어신호를 제공하는 왜곡신호 비교부(220)와; 상기 왜곡신호비교부(220)의 선택제어신호에 의거하여 제1,2부호화 방식중에서 어느 한 부호화 방식을 선택하기 위한 제1,2스위칭부(240)(260)로 이루어짐을 특징으로 하는 영상기기의 부호화장치.The distortion signal comparing unit of claim 1, wherein the distortion signal processing unit provides a switching control signal for selecting one encoding based on a distortion value between the current frame and the predicted frame and a preset distortion value Th. 220; An imaging apparatus comprising: first and second switching units 240 and 260 for selecting any one of first and second encoding methods based on a selection control signal of the distortion signal comparator 220. Encoding device. 제2항에 있어서, 상기 왜곡신호 비교부(220)의 비교 결과, 상기 프레임간 차분 신호에 대한 왜곡값이 기설정된 왜곡값보다 작으면, 상기 제1,2스위칭부(240)(260)의 스위치가 각각 고정접점(a)로 절환되어 상기 입력되는 영상 프레임이 제1부호화 수단에 의해 부호화됨을 특징으로 하는 영상기기의 부호화장치.3. The method of claim 2, wherein when the distortion value for the inter-frame difference signal is smaller than a preset distortion value, the first and second switching units 240 and 260 are compared. And a switch is switched to a fixed contact point (a), and the input image frame is encoded by a first encoding means. 제2항에 있어서, 상기 왜곡신호 비교부(220)의 비교 결과, 상기 프레임간 차분신호에 대한 왜곡값이 기설정된 왜곡값보다 같거나 크면, 상기 제1,2스위칭부(240)(260)의 스위치가 각각 고정접점(b)로 절환되어 상기 입력되는 영상 프레임이 제2부호화 수단에 의해 부호화됨을 특징으로 하는 영상기기의 부호화장치.The first and second switching units 240 and 260 of claim 2, wherein when a distortion value of the inter-frame difference signal is equal to or greater than a preset distortion value, the first and second switching units 240 and 260 are compared. Is switched to the fixed contact (b), and the input video frame is encoded by a second encoding means. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950023362A 1995-07-31 1995-07-31 Encoder of image system KR0178225B1 (en)

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KR0178225B1 KR0178225B1 (en) 1999-05-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100255761B1 (en) * 1997-12-16 2000-05-01 전주범 Apparatus for controlling switching coding mode in image coding system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100255761B1 (en) * 1997-12-16 2000-05-01 전주범 Apparatus for controlling switching coding mode in image coding system

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