CA2048623A1 - Systemes telephoniques video - Google Patents

Systemes telephoniques video

Info

Publication number
CA2048623A1
CA2048623A1 CA002048623A CA2048623A CA2048623A1 CA 2048623 A1 CA2048623 A1 CA 2048623A1 CA 002048623 A CA002048623 A CA 002048623A CA 2048623 A CA2048623 A CA 2048623A CA 2048623 A1 CA2048623 A1 CA 2048623A1
Authority
CA
Canada
Prior art keywords
image
grey
scale
pixel
difference signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002048623A
Other languages
English (en)
Inventor
Robert L. Harvey
Patrick R. Hirschler-Marchand
David J. Cipolle
Kipton C. Kumler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Massachusetts Institute of Technology
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2048623A1 publication Critical patent/CA2048623A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4007—Scaling of whole images or parts thereof, e.g. expanding or contracting based on interpolation, e.g. bilinear interpolation
    • 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
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal 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
    • H04N19/93—Run-length coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6137—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a telephone network, e.g. POTS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6187—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via a telephone network, e.g. POTS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/04—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier
    • H04N7/045—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier the carrier being frequency modulated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Telephone Function (AREA)
  • Telephone Set Structure (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
CA002048623A 1989-12-28 1990-12-26 Systemes telephoniques video Abandoned CA2048623A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45828289A 1989-12-28 1989-12-28
US458,282 1989-12-28

Publications (1)

Publication Number Publication Date
CA2048623A1 true CA2048623A1 (fr) 1991-06-29

Family

ID=23820144

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002048623A Abandoned CA2048623A1 (fr) 1989-12-28 1990-12-26 Systemes telephoniques video

Country Status (6)

Country Link
EP (1) EP0462261A1 (fr)
JP (1) JPH04505537A (fr)
KR (1) KR920702157A (fr)
AU (1) AU650256B2 (fr)
CA (1) CA2048623A1 (fr)
WO (2) WO1991010328A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6124882A (en) * 1992-02-19 2000-09-26 8×8, Inc. Videocommunicating apparatus and method therefor
US6121998A (en) * 1992-02-19 2000-09-19 8×8, Inc. Apparatus and method for videocommunicating having programmable architecture permitting data revisions
FI103628B1 (fi) 1997-09-02 1999-07-30 Nokia Mobile Phones Ltd Videodatan lähettäminen
JP2001028763A (ja) * 1999-04-29 2001-01-30 Mitsubishi Electric Inf Technol Center America Inc コントローラからビデオ表示ユニットに画像データを転送する方法、ビデオ表示ユニットアダプタ、ビデオ表示システム、並びにテレビ表示画面上への提示のために画像データをダブルバッファリングする方法
EP1387343B1 (fr) * 2002-07-30 2009-03-25 Thomson Licensing Méthode et dispositif de traitement de données video pour affichage sur un dispositif d'affichage
EP1387340A1 (fr) 2002-07-30 2004-02-04 Deutsche Thomson-Brandt Gmbh Procédé et dispositif pour le traitement des données d'image vidéo pour un dispositif d'affichage
RU2298885C2 (ru) * 2004-11-02 2007-05-10 Казанский государственный технический университет им. А.Н. Туполева Устройство кодирования и декодирования видеокадров
US8914734B2 (en) 2009-12-23 2014-12-16 8X8, Inc. Web-enabled conferencing and meeting implementations with a subscription-based model
US20110149811A1 (en) 2009-12-23 2011-06-23 Ramprakash Narayanaswamy Web-Enabled Conferencing and Meeting Implementations with Flexible User Calling Features
US20110150194A1 (en) 2009-12-23 2011-06-23 Ramprakash Narayanaswamy Web-Enabled Conferencing and Meeting Implementations with Flexible User Calling Features
US20110149809A1 (en) 2009-12-23 2011-06-23 Ramprakash Narayanaswamy Web-Enabled Conferencing and Meeting Implementations with Flexible User Calling and Content Sharing Features
CN101917622B (zh) * 2010-08-24 2012-09-05 中国科学院光电技术研究所 14bit位宽图像压缩硬件编码器
JP2013005204A (ja) * 2011-06-16 2013-01-07 Sony Corp ビデオ送信装置、ビデオ受信装置、およびビデオ送信方法
US8817801B1 (en) 2011-07-08 2014-08-26 8X8, Inc. Conferencing and meeting implementations with advanced features
EP3416385B1 (fr) * 2011-12-13 2020-09-23 JVC KENWOOD Corporation Dispositif de codage vidéo, procédé de codage vidéo, programme de codage vidéo, dispositif de décodage vidéo, procédé de décodage vidéo et programme de décodage vidéo

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937878A (en) * 1975-01-21 1976-02-10 Bell Telephone Laboratories, Incorporated Animated dithered display systems
FR2529044B1 (fr) * 1982-06-18 1986-06-20 Inst Nat Rech Inf Automat Procedes et dispositifs de telecommunications visuelles, notamment a l'usage des sourds
FR2549329B1 (fr) * 1983-07-13 1987-01-16 Thomson Csf Procede et dispositif de detection de points en mouvement dans une image de television pour systemes de television numerique de compression de debit a rafraichissement conditionnel
FI70662C (fi) * 1984-12-14 1986-09-24 Valtion Teknillinen Videokomprimeringsfoerfarande
JP2794281B2 (ja) * 1986-07-10 1998-09-03 株式会社日立製作所 デイザ信号の符号復号処理装置
US4967272A (en) * 1988-01-27 1990-10-30 Communications Satellite Corporation Bandwidth reduction and multiplexing of multiple component TV signals
FR2629595B1 (fr) * 1988-03-31 1991-06-21 Oreal Procede et dispositif pour mesurer l'elasticite d'une couche superficielle, en particulier de la peau

Also Published As

Publication number Publication date
WO1991010328A1 (fr) 1991-07-11
JPH04505537A (ja) 1992-09-24
WO1991010324A1 (fr) 1991-07-11
AU650256B2 (en) 1994-06-16
KR920702157A (ko) 1992-08-12
EP0462261A1 (fr) 1991-12-27
AU7166491A (en) 1991-07-24

Similar Documents

Publication Publication Date Title
US5543939A (en) Video telephone systems
US5055927A (en) Dual channel video signal transmission system
Limb et al. An interframe coding technique for broadcast television
US5430487A (en) Method and apparatus for improving temporal video signal processing using motion vectors transmitted with the video signal
AU650256B2 (en) Video telephone systems
JPH06189281A (ja) 適応的フレーム／フィールドフォーマット圧縮を用いた映像信号符号化装置
JP2912959B2 (ja) 多数のデジタルデータ流伝送用送信機及び受信機
JPH07203321A (ja) 直角位相映像搬送波にディジタル信号を有するｎｔｓｃ ｔｖ信号処理装置
JPH01265683A (ja) 鮮明度の改良されたテレビジョン方式
JP3191935B2 (ja) 画像符号化方法、画像符号化装置、画像復号化方法
Haskell et al. Interframe coding of 525-line, monochrome television at 1.5 Mbits/s
US4866509A (en) System for adaptively generating signal in alternate formats as for an EDTV system
US5202755A (en) Encoding system of a simulcast high definition television and method thereof
CA1192997A (fr) Codage a deux niveaux de signaux video couleurs
Matsui et al. High-speed transmission of sequential freeze-pictures by extracting changed areas
Bauch et al. Picture coding
Haskell Interframe coding of monochrome television-a review
JP2849385B2 (ja) カラー画像の圧縮符号化装置
Nicol et al. Transmission techniques for picture Prestel
JP2518223B2 (ja) 高能率符号化装置
Troxel Application of pseudorandom noise to DPCM
Matsumoto et al. 3045 Mbps digital coding system for transmission of (4: 2: 2) digital component TV signals recommended by CCIR
JP2508509B2 (ja) デイジタルカラ−ビデオ信号の補間回路
JPH08205130A (ja) 画像データ送受信装置
Koga et al. Low bit rate motion video coder/decoder for teleconferencing

Legal Events

Date Code Title Description
FZDE Discontinued
FZDE Discontinued

Effective date: 19950626