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KR890004573A - 디지탈신호의 분해능을 개선하는 방법 및 회로장치 - Google Patents

디지탈신호의 분해능을 개선하는 방법 및 회로장치 Download PDF

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Publication number
KR890004573A
KR890004573A KR1019880010762A KR880010762A KR890004573A KR 890004573 A KR890004573 A KR 890004573A KR 1019880010762 A KR1019880010762 A KR 1019880010762A KR 880010762 A KR880010762 A KR 880010762A KR 890004573 A KR890004573 A KR 890004573A
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South Korea
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numerical
region
resolution
storage
digital signal
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KR1019880010762A
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KR0137038B1 (ko
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하르트나크 볼프강
베르너 케젠 하인츠
슈츠 헤르베르트
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로베르트 아인젤
도이체 톰손-브란트 게엠베하
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/16—Apparatus or circuits at the receiving end
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Color Television Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Image Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Communication Control (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Systems (AREA)

Abstract

내용 없음.

Description

디지털신호의 분해능을 개선하는 방법 및 회로장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 디지털신호를 본래의 영역으로부터 자리수가 제한된 주파수영역으로 변환하고 또한 그에 계속해서 본래의 영역으로 역변환하기 위한 회로장치의 블록회로도.
제2도는 부가적인 영역시프트회로가 설치되어 있는 제1도에 상응하는 블록회로도.

Claims (3)

  1. 표본치가 블록마다에 변환되고, 그 결과 직류성분을 나타내는, 하나의 정의계수 및 교류성분을 나타내는, 복수의 부 및/또는 정의계수가 생기고, 이들 계수는 계산시에 비교적 근소한 자릿수로 제한되고, 뭉쳐지고 또한 전송 및/또는 기억후에 재차 역변환되는, 디지털신호의 분해능을 개선하는 방법에 있어서, 직류성분을 포함하고 있는 계수의 수치영역을, 변환후 및 전송 또는 기억전에, 교류성분을 포함하고 있는 계수가 점하고 있는 수치영역과 같은 수치영역으로 시프트하고 또한 극성을 부가하고 또한 상기 수치영역을 전송 또는 기억 후 및 역변환의 전 또는 후에 그의 본래의 영역으로 복귀시키는 것을 특징으로 하는 디지털신호의 분해능을 개선하는 방법.
  2. 제1항에 있어서, 수치영역을 시프트하기 위하여, 직류성분의 값으로부터의 직류성분의 수치영역의 1/2에 상응하는 값을 감산하고 또한 원상으로 복귀시키기 위하여 시프트된 수치영역에 상응하는 값을 가산하는 것을 특징으로 하는 디지털신호의 분해능을 개선하는 방법.
  3. 표본치가, 변환회로(1), (3)을 사용하여 블록마다 변환되고, 그 결과 직류쇼??분을 나타내는, 하나의 정의 계수 및 교류성분을 나타내는 복수의 정 및/또는 부의 게수가 생기고,이들 계수가 계산시에 자릿수 변화회로에 의하여 비교적 작은 자릿수로 제한되거나 또는 뭉쳐지고 또한 전송 및/또는 기억후 다른 변환회로(5), (7)을 사용하여 재차역 변환되는, 디지털신호, 예??대 휘도 및/또는 크로미넌스 텔레비전신호의 분해능을 개선하기 위한 회로장치에 있어서, 전송 및/또는 기억수단(4)의 전 및 후에, 직류성분을 포함하는 계수의 수치영역이 변환후 및 전송 또는 기억전에 교류성분을 포함하는 계수가 점하고 있는 것과 같은 수치영역으로 시프트되고 또한 상기의 값영역이 전송 또는 기억후 및 역변환의 전 또는 후에 그의 본래의 영역으로 복귀되도록 제어되는, 계수의 수치영역에 대한 영역시프트회로(18), (19)가 설치되어 있으며 또한 본래의 계수의 크기에 의존하여 극성을 발생하거나 내지 평가하는 극성발생기 내지 평가회로가 상기 영역시프트회로(18), (19)로 접속되어 있는 것을 특징으로 하는 디지털신호의 분해능을 개선하는 회로장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880010762A 1987-08-26 1988-08-24 디지탈 신호의 분해능을 개선하는 방법 및 회로 장치 Expired - Fee Related KR0137038B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEP3728444.4 1987-08-26
DE19873728444 DE3728444A1 (de) 1987-08-26 1987-08-26 Verfahren und schaltungsanordnung zur verbesserung der aufloesung von digitalen signalen
DE3728444.4 1987-08-26

Publications (2)

Publication Number Publication Date
KR890004573A true KR890004573A (ko) 1989-04-22
KR0137038B1 KR0137038B1 (ko) 1998-04-28

Family

ID=6334509

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880010762A Expired - Fee Related KR0137038B1 (ko) 1987-08-26 1988-08-24 디지탈 신호의 분해능을 개선하는 방법 및 회로 장치

Country Status (10)

Country Link
US (1) US4924309A (ko)
EP (1) EP0304836B1 (ko)
JP (1) JP2806945B2 (ko)
KR (1) KR0137038B1 (ko)
AT (1) ATE98832T1 (ko)
CA (1) CA1325845C (ko)
DE (2) DE3728444A1 (ko)
ES (1) ES2047515T3 (ko)
FI (1) FI86495C (ko)
HK (1) HK78395A (ko)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH031662A (ja) * 1989-05-30 1991-01-08 Fuji Photo Film Co Ltd 画像信号圧縮符号化装置
US5021891A (en) * 1990-02-27 1991-06-04 Qualcomm, Inc. Adaptive block size image compression method and system
US5107345A (en) * 1990-02-27 1992-04-21 Qualcomm Incorporated Adaptive block size image compression method and system
DE4007814A1 (de) * 1990-03-12 1991-09-19 Thomson Brandt Gmbh Verfahren zur aufzeichnung und wiedergabe von digitalen daten auf einem aufzeichnungstraeger
US5351087A (en) * 1990-06-01 1994-09-27 Thomson Consumer Electronics, Inc. Two stage interpolation system
GB9012326D0 (en) * 1990-06-01 1990-07-18 Thomson Consumer Electronics Wide screen television
ES2110504T3 (es) * 1991-06-04 1998-02-16 Qualcomm Inc Sistema de compresion de imagenes por dimensionado autoadaptivo de bloques.
JP3141896B2 (ja) * 1991-08-09 2001-03-07 ソニー株式会社 ディジタルビデオ信号の記録装置
US5253055A (en) * 1992-07-02 1993-10-12 At&T Bell Laboratories Efficient frequency scalable video encoding with coefficient selection
AU6099594A (en) * 1993-02-03 1994-08-29 Qualcomm Incorporated Interframe video encoding and decoding system
DE19719383A1 (de) 1997-05-07 1998-11-19 Siemens Ag Verfahren und Vorrichtung zur Codierung und Decodierung eines digitalisierten Bildes
US6985589B2 (en) * 1999-12-02 2006-01-10 Qualcomm Incorporated Apparatus and method for encoding and storage of digital image and audio signals
CN100380968C (zh) * 1999-12-02 2008-04-09 高通股份有限公司 解码数字图像和音频信号的设备与方法
NO319007B1 (no) * 2003-05-22 2005-06-06 Tandberg Telecom As Fremgangsmate og apparat for videokomprimering

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394774A (en) * 1978-12-15 1983-07-19 Compression Labs, Inc. Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback
DE3045542A1 (de) * 1980-12-03 1982-07-01 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zur digitalen unterdrueckung vorbestimmter amplitudenbereiche
DE3138816A1 (de) * 1981-09-30 1983-04-14 Philips Patentverwaltung Gmbh, 2000 Hamburg Anordnung zum speichern oder uebertragen und zum rueckgewinnen von bildsignalen
FR2575351B1 (fr) * 1984-12-21 1988-05-13 Thomson Csf Procede adaptatif de codage et de decodage d'une suite d'images par transformation, et dispositifs pour la mise en oeuvre de ce procede
US4654695A (en) * 1985-03-25 1987-03-31 Rca Corporation Apparatus for reducing the resolution of video samples by truncating the most significant bits
US4698689A (en) * 1986-03-28 1987-10-06 Gte Laboratories Incorporated Progressive image transmission

Also Published As

Publication number Publication date
FI86495C (fi) 1992-08-25
DE3728444A1 (de) 1989-03-09
FI86495B (fi) 1992-05-15
DE3886305D1 (de) 1994-01-27
CA1325845C (en) 1994-01-04
JPS6471336A (en) 1989-03-16
HK78395A (en) 1995-05-26
KR0137038B1 (ko) 1998-04-28
ATE98832T1 (de) 1994-01-15
ES2047515T3 (es) 1994-03-01
FI883929L (fi) 1989-02-27
EP0304836B1 (de) 1993-12-15
FI883929A0 (fi) 1988-08-25
EP0304836A3 (de) 1991-01-30
EP0304836A2 (de) 1989-03-01
US4924309A (en) 1990-05-08
JP2806945B2 (ja) 1998-09-30

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