CA2108338A1 - Adaptive Video Encoder for Two-Layer Encoding of Video Signals on ATM (Asynchronous Transfer Mode) Networks - Google Patents

Adaptive Video Encoder for Two-Layer Encoding of Video Signals on ATM (Asynchronous Transfer Mode) Networks

Info

Publication number
CA2108338A1
CA2108338A1 CA2108338A CA2108338A CA2108338A1 CA 2108338 A1 CA2108338 A1 CA 2108338A1 CA 2108338 A CA2108338 A CA 2108338A CA 2108338 A CA2108338 A CA 2108338A CA 2108338 A1 CA2108338 A1 CA 2108338A1
Authority
CA
Canada
Prior art keywords
low
cell loss
atm
digital information
networks
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.)
Granted
Application number
CA2108338A
Other languages
French (fr)
Other versions
CA2108338C (en
Inventor
Caspar Horne
Amy Ruth Reibman
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2108338A1 publication Critical patent/CA2108338A1/en
Application granted granted Critical
Publication of CA2108338C publication Critical patent/CA2108338C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • 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
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/107—Selection of coding mode or of prediction mode between spatial and temporal predictive coding, e.g. picture refresh
    • 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
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
    • 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
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • 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
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/187—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a scalable video layer
    • 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
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478—Provisions for broadband connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5614—User Network Interface
    • H04L2012/5616—Terminal equipment, e.g. codecs, synch.
    • 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
    • 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
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability

Abstract

The quality of video images received at the remote end of an ATM network capable of transmitting data at high and low priorities is greatly improved at high cell loss levels by employing a two-layered video encoding technique that adapts the method for encoding information transmitted in the low-priority digital information stream to the rate of cell loss on the network so that compression efficiency and image quality are high when the network load is low and resiliency to cell loss is high when the network load is high.
The encoder adapts its encoding method in response to a cell loss information signal generated by the remote decoder by selecting the prediction mode used to encode the low-priority digital information stream, and by changing the frequency at which slice-start synchronization codes are placed within the low-priority digital information stream (FIG. 1).
CA002108338A 1993-09-02 1993-10-13 Adaptive video encoder for two-layer encoding of video signals on atm (asynchronous transfer mode) networks Expired - Fee Related CA2108338C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US113,788 1993-09-02
US08/113,788 US5515377A (en) 1993-09-02 1993-09-02 Adaptive video encoder for two-layer encoding of video signals on ATM (asynchronous transfer mode) networks

Publications (2)

Publication Number Publication Date
CA2108338A1 true CA2108338A1 (en) 1995-03-03
CA2108338C CA2108338C (en) 1999-07-13

Family

ID=22351529

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002108338A Expired - Fee Related CA2108338C (en) 1993-09-02 1993-10-13 Adaptive video encoder for two-layer encoding of video signals on atm (asynchronous transfer mode) networks

Country Status (3)

Country Link
US (1) US5515377A (en)
JP (1) JP3027492B2 (en)
CA (1) CA2108338C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0781051A2 (en) * 1995-12-20 1997-06-25 Deutsche Thomson-Brandt Gmbh Hierarchical transmission of digital image signals

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408974C2 (en) * 1994-03-16 1996-07-11 Siemens Ag Modularly structured ATM communication system with communication modules
GB2306867B (en) * 1995-10-26 1998-06-03 Bosch Gmbh Robert Method of optimizing the transmission of signals
US6075768A (en) * 1995-11-09 2000-06-13 At&T Corporation Fair bandwidth sharing for video traffic sources using distributed feedback control
JP3335069B2 (en) * 1996-04-11 2002-10-15 富士通株式会社 Fixed-length cell multiplex transmission device, fixed-length cell multiplex transmission method, fixed-length cell transmission device, and fixed-length cell multiplex device
CA2208950A1 (en) * 1996-07-03 1998-01-03 Xuemin Chen Rate control for stereoscopic digital video encoding
JPH10117353A (en) * 1996-10-09 1998-05-06 Nec Corp Data processor and receiver
US6141053A (en) * 1997-01-03 2000-10-31 Saukkonen; Jukka I. Method of optimizing bandwidth for transmitting compressed video data streams
US6011590A (en) * 1997-01-03 2000-01-04 Ncr Corporation Method of transmitting compressed information to minimize buffer space
US6084910A (en) * 1997-01-31 2000-07-04 Hughes Electronics Corporation Statistical multiplexer for video signals
US6091455A (en) * 1997-01-31 2000-07-18 Hughes Electronics Corporation Statistical multiplexer for recording video
US6005620A (en) * 1997-01-31 1999-12-21 Hughes Electronics Corporation Statistical multiplexer for live and pre-compressed video
US6188436B1 (en) 1997-01-31 2001-02-13 Hughes Electronics Corporation Video broadcast system with video data shifting
US6078958A (en) * 1997-01-31 2000-06-20 Hughes Electronics Corporation System for allocating available bandwidth of a concentrated media output
US6097435A (en) * 1997-01-31 2000-08-01 Hughes Electronics Corporation Video system with selectable bit rate reduction
DE69835388T2 (en) * 1997-03-17 2007-07-19 Sony Corp. Image encoder and image decoder
CN100579230C (en) * 1997-04-01 2010-01-06 索尼公司 Image encoder and method thereof, picture decoder and method thereof
JPH11225078A (en) * 1997-09-29 1999-08-17 Canon Inf Syst Res Australia Pty Ltd Data compressing method and its device
US5969579A (en) * 1997-10-17 1999-10-19 Ncr Corporation ECL pulse amplitude modulated encoder driver circuit
WO1999021367A1 (en) * 1997-10-20 1999-04-29 Mitsubishi Denki Kabushiki Kaisha Image encoder and image decoder
KR19990033459A (en) 1997-10-24 1999-05-15 전주범 Hurst Parameter Estimation Method for Variable Bit Rate Video Traffic Using Fractal Area
KR19990033458A (en) * 1997-10-24 1999-05-15 전주범 Heuristic Parameter Estimation Method for Variable Bit Rate Video Traffic Using Fourier Filtering
US6731811B1 (en) * 1997-12-19 2004-05-04 Voicecraft, Inc. Scalable predictive coding method and apparatus
US6215766B1 (en) * 1998-01-30 2001-04-10 Lucent Technologies Inc. Hierarchical rate control of receivers in a communication system transmitting layered video multicast data with retransmission (LVMR)
DE19804564A1 (en) * 1998-02-05 1999-08-12 Fraunhofer Ges Forschung Communication network, method for transmitting a signal, network connection unit and method for adapting the data rate of a scaled data stream
JP3558522B2 (en) * 1998-06-12 2004-08-25 三菱電機株式会社 Rate control communication device and rate control communication method
JP2001169293A (en) * 1999-12-08 2001-06-22 Nec Corp Picture transmission apparatus
US7823182B1 (en) * 1999-12-22 2010-10-26 AT & T Intellectual Property II Method and system for adaptive transmission of smoothed data over wireless channels
US6445696B1 (en) * 2000-02-25 2002-09-03 Network Equipment Technologies, Inc. Efficient variable rate coding of voice over asynchronous transfer mode
US6973501B1 (en) * 2000-06-21 2005-12-06 Adc Telecommunications, Inc. Reducing loss in transmission quality under changing network conditions
DE10033110B4 (en) * 2000-07-07 2005-06-16 Siemens Ag Method, and system for transmitting digitized moving pictures from a transmitter to a receiver and associated decoder
FI120125B (en) * 2000-08-21 2009-06-30 Nokia Corp Image Coding
US8127326B2 (en) 2000-11-14 2012-02-28 Claussen Paul J Proximity detection using wireless connectivity in a communications system
CA2428946C (en) 2000-11-14 2010-06-22 Scientific-Atlanta, Inc. Networked subscriber television distribution
US7319667B1 (en) 2000-11-15 2008-01-15 Cisco Technology, Inc. Communication system with priority data compression
US6987728B2 (en) 2001-01-23 2006-01-17 Sharp Laboratories Of America, Inc. Bandwidth allocation system
US7958532B2 (en) * 2001-06-18 2011-06-07 At&T Intellectual Property Ii, L.P. Method of transmitting layered video-coded information
US7039113B2 (en) * 2001-10-16 2006-05-02 Koninklijke Philips Electronics N.V. Selective decoding of enhanced video stream
JP4150951B2 (en) * 2002-02-19 2008-09-17 ソニー株式会社 Video distribution system, video distribution apparatus and method, and program
MXPA04012517A (en) * 2002-06-11 2005-02-17 Thomson Licensing Sa Multimedia server with simple adaptation to dynamic network loss conditions.
US20050220441A1 (en) * 2002-07-16 2005-10-06 Comer Mary L Interleaving of base and enhancement layers for hd-dvd
US7516470B2 (en) * 2002-08-02 2009-04-07 Cisco Technology, Inc. Locally-updated interactive program guide
US7908625B2 (en) 2002-10-02 2011-03-15 Robertson Neil C Networked multimedia system
US7545935B2 (en) * 2002-10-04 2009-06-09 Scientific-Atlanta, Inc. Networked multimedia overlay system
US7360235B2 (en) 2002-10-04 2008-04-15 Scientific-Atlanta, Inc. Systems and methods for operating a peripheral record/playback device in a networked multimedia system
US8046806B2 (en) 2002-10-04 2011-10-25 Wall William E Multiroom point of deployment module
KR100552169B1 (en) * 2002-10-15 2006-02-13 에스케이 텔레콤주식회사 Video streaming signal compression device of mobile telecommunication system
US8204079B2 (en) * 2002-10-28 2012-06-19 Qualcomm Incorporated Joint transmission of multiple multimedia streams
AU2003284152A1 (en) * 2002-11-25 2004-06-18 Thomson Licensing S.A. Two-layer decoding for hybrid high-definition dvd
US7852406B2 (en) * 2002-12-06 2010-12-14 Broadcom Corporation Processing high definition video data
US7487532B2 (en) * 2003-01-15 2009-02-03 Cisco Technology, Inc. Optimization of a full duplex wideband communications system
US8094640B2 (en) 2003-01-15 2012-01-10 Robertson Neil C Full duplex wideband communications system for a local coaxial network
WO2005032138A1 (en) * 2003-09-29 2005-04-07 Koninklijke Philips Electronics, N.V. System and method for combining advanced data partitioning and fine granularity scalability for efficient spatio-temporal-snr scalability video coding and streaming
US20050120128A1 (en) * 2003-12-02 2005-06-02 Wilife, Inc. Method and system of bandwidth management for streaming data
US7599002B2 (en) * 2003-12-02 2009-10-06 Logitech Europe S.A. Network camera mounting system
WO2005055605A1 (en) * 2003-12-03 2005-06-16 Koninklijke Philips Electronics N.V. System and method for improved scalability support in mpeg-2 systems
EP1555821A1 (en) * 2004-01-13 2005-07-20 Sony International (Europe) GmbH Method for pre-processing digital data, digital to analog and analog to digital conversion system
US20060171453A1 (en) * 2005-01-04 2006-08-03 Rohlfing Thomas R Video surveillance system
KR100723403B1 (en) * 2005-02-28 2007-05-30 삼성전자주식회사 A prediction image generating method and apparatus using using single coding mode among color components, and an image and video encoding/decoding method and apparatus using it
US20070143776A1 (en) * 2005-03-01 2007-06-21 Russ Samuel H Viewer data collection in a multi-room network
US20060218581A1 (en) * 2005-03-01 2006-09-28 Barbara Ostrowska Interactive network guide with parental monitoring
US7725799B2 (en) * 2005-03-31 2010-05-25 Qualcomm Incorporated Power savings in hierarchically coded modulation
US8619860B2 (en) * 2005-05-03 2013-12-31 Qualcomm Incorporated System and method for scalable encoding and decoding of multimedia data using multiple layers
US7974341B2 (en) * 2005-05-03 2011-07-05 Qualcomm, Incorporated Rate control for multi-layer video design
US20060255931A1 (en) * 2005-05-12 2006-11-16 Hartsfield Andrew J Modular design for a security system
DE102005032080A1 (en) * 2005-07-08 2007-01-11 Siemens Ag A method for transmitting a media data stream and a method for receiving and creating a reconstructed media data stream, and associated transmitting device and receiving device
CA2615352C (en) * 2005-07-20 2013-02-12 Vidyo, Inc. System and method for jitter buffer reduction in scalable coding
US8345768B1 (en) * 2005-07-28 2013-01-01 Teradici Corporation Progressive block encoding using region analysis
US20070030833A1 (en) * 2005-08-02 2007-02-08 Pirzada Fahd B Method for managing network content delivery using client application workload patterns and related systems
US7876998B2 (en) 2005-10-05 2011-01-25 Wall William E DVD playback over multi-room by copying to HDD
WO2008023316A2 (en) * 2006-08-21 2008-02-28 Nxp B.V. Motion-compensated processing of image signals
FR2919976B1 (en) * 2007-08-09 2009-11-13 Alcatel Lucent Sas METHOD OF TRANSMITTING, TO HETEROGENEOUS TERMINALS AND VIA TDM / TDMA-TYPE MULTIPLEXING INFRASTRUCTURE, LAYERED MULTIMEDIA CONTENT, AND PROCESSING DEVICE AND DECODER THEREFOR
JP5339697B2 (en) * 2007-08-14 2013-11-13 キヤノン株式会社 Transmission device, transmission method, and computer program
US8588583B2 (en) * 2007-08-22 2013-11-19 Adobe Systems Incorporated Systems and methods for interactive video frame selection
US10607454B2 (en) * 2007-12-20 2020-03-31 Ncr Corporation Device management portal, system and method
US8627396B2 (en) 2009-06-12 2014-01-07 Cygnus Broadband, Inc. Systems and methods for prioritization of data for intelligent discard in a communication network
KR101247595B1 (en) 2009-06-12 2013-03-26 시그너스 브로드밴드, 인코포레이티드 Systems and methods for intelligent discard in a communication network
US8531961B2 (en) 2009-06-12 2013-09-10 Cygnus Broadband, Inc. Systems and methods for prioritization of data for intelligent discard in a communication network
CN102474620A (en) * 2009-07-10 2012-05-23 三星电子株式会社 Spatial prediction method and apparatus in layered video coding
US8750370B2 (en) * 2009-09-04 2014-06-10 Brocade Communications Systems, Inc. Congestion-adaptive compression
US8411743B2 (en) * 2010-04-30 2013-04-02 Hewlett-Packard Development Company, L.P. Encoding/decoding system using feedback
CN102907096A (en) * 2010-05-10 2013-01-30 三星电子株式会社 Method and apparatus for transmitting and receiving layered coded video
US8711928B1 (en) 2011-10-05 2014-04-29 CSR Technology, Inc. Method, apparatus, and manufacture for adaptation of video encoder tuning parameters
US20130208809A1 (en) * 2012-02-14 2013-08-15 Microsoft Corporation Multi-layer rate control
US20150334389A1 (en) * 2012-09-06 2015-11-19 Sony Corporation Image processing device and image processing method
US9357211B2 (en) * 2012-12-28 2016-05-31 Qualcomm Incorporated Device and method for scalable and multiview/3D coding of video information

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140417A (en) * 1989-06-20 1992-08-18 Matsushita Electric Co., Ltd. Fast packet transmission system of video data
US5029164A (en) * 1990-04-13 1991-07-02 Digital Equipment Corporation Congestion avoidance in high-speed network carrying bursty traffic
JPH0490645A (en) * 1990-08-03 1992-03-24 Mitsubishi Electric Corp Voice packet assembly/diassembly equipment
JP3241716B2 (en) * 1990-08-31 2001-12-25 株式会社東芝 ATM exchange method
JPH04220839A (en) * 1990-12-21 1992-08-11 Nippon Telegr & Teleph Corp <Ntt> Packet transmitter
JPH04257145A (en) * 1991-02-12 1992-09-11 Hitachi Ltd Method and device for packet flow rate control
GB2261798B (en) * 1991-11-23 1995-09-06 Dowty Communications Ltd Packet switching networks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0781051A2 (en) * 1995-12-20 1997-06-25 Deutsche Thomson-Brandt Gmbh Hierarchical transmission of digital image signals
EP0781051A3 (en) * 1995-12-20 1999-06-02 Deutsche Thomson-Brandt Gmbh Hierarchical transmission of digital image signals

Also Published As

Publication number Publication date
US5515377A (en) 1996-05-07
JPH07107096A (en) 1995-04-21
JP3027492B2 (en) 2000-04-04
CA2108338C (en) 1999-07-13

Similar Documents

Publication Publication Date Title
CA2108338A1 (en) Adaptive Video Encoder for Two-Layer Encoding of Video Signals on ATM (Asynchronous Transfer Mode) Networks
JP2986039B2 (en) Statistical multiplexer for multi-channel image compression system
JP2670259B2 (en) High efficiency coding device
US7865024B2 (en) Encoding apparatus, video camera
AU598184B2 (en) Method and arrangement for refreshing a frame memory in an interframe encoding system
US4922510A (en) Method and means for variable length coding
EP0180345A2 (en) Method and apparatus for picture signal encoding and decoding
AU668175B2 (en) Television system for transmitting pictures in a digital form
EP1599047A3 (en) Video (de)coding device with frequency band retransmission
JPH02503854A (en) DPCM method with interframe motion instruction signal
US5796436A (en) Video data storing device and method for coding video data based upon determining whether or not video data conforms to a predetermined standard
Prabhu A predictor switching scheme for DPCM coding of video signals
US4957688A (en) System for the transmission of video signals with adaptive code word allocation, and also a transmitter and a receiver suitable for the system
US6256420B1 (en) Data transmission system
JPH09130313A (en) Multi-media radio communication system
JPH0322735A (en) Packet transmitter for video signal
US5956320A (en) Cell assembling/disassembling system for asynchronous transfer mode network
JP3024380B2 (en) Image coding control method
US6834082B2 (en) Image transmitting system for transmitting dynamic image data
JP2000138918A (en) Video database
JPH0289472A (en) Picture coding transmitter
JPH03265291A (en) Picture decoding system having abort compensation function
KR890004774B1 (en) The method of pulse code modulation by adaptive lebel compression
JP3267307B2 (en) Image information coding transmission device
EP0578308A1 (en) Television system for transmitting pictures in a digital form

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20091013