CA2119983A1 - Communication System - Google Patents

Communication System

Info

Publication number
CA2119983A1
CA2119983A1 CA2119983A CA2119983A CA2119983A1 CA 2119983 A1 CA2119983 A1 CA 2119983A1 CA 2119983 A CA2119983 A CA 2119983A CA 2119983 A CA2119983 A CA 2119983A CA 2119983 A1 CA2119983 A1 CA 2119983A1
Authority
CA
Canada
Prior art keywords
signal
section
image
error correction
generate
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
CA2119983A
Other languages
French (fr)
Other versions
CA2119983C (en
Inventor
Mitsuaki Oshima
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.)
Panasonic Holdings Corp
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
Priority to CA002259818A priority Critical patent/CA2259818C/en
Publication of CA2119983A1 publication Critical patent/CA2119983A1/en
Application granted granted Critical
Publication of CA2119983C publication Critical patent/CA2119983C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/12Systems 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0059Convolutional codes
    • H04L1/006Trellis-coded modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/02Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/02Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04Modulator circuits; Transmitter circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/18Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/183Multiresolution systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/2604Multiresolution systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3488Multiresolution systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38Demodulator circuits; Receiver circuits
    • H04L27/3845Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41Structure of client; Structure of client peripherals
    • H04N21/426Internal components of the client ; Characteristics thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/438Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4382Demodulation or channel decoding, e.g. QPSK demodulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network 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 
    • H04N21/63Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/647Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
    • H04N21/64784Data processing by the network
    • H04N21/64792Controlling the complexity of the content stream, e.g. by dropping packets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/015High-definition television systems

Abstract

A communication system comprising: an input section for inputting an image signal; an image compression section for compressing the image signal to generate a digital image compression signal; an error correction encoding section for adding an error correction code to the digital image compression signal to generate an error correction coding signal; a modulating section for modulating the error correction coding signal into an n-value VSB modulation signal; a transmitting section for transmission the n-value VSB modulation signal; a receiving section for receiving a transmission signal transmitted from the transmitting section; a demodulating section for demodulating the transmission signal into a receiving digital signal; an error correction section for error correcting the receiving digital signal to generate an error-corrected digital signal; an image expansion section for expanding the error-corrected digital signal to generate an image output signal; and an output section for outputting the image output signal.
CA 2119983 1993-03-25 1994-03-25 Communication system Expired - Lifetime CA2119983C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002259818A CA2259818C (en) 1993-03-25 1994-03-25 Communication system

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP5-66461 1993-03-25
JP6646193 1993-03-25
JP13298493 1993-05-10
JP5-132984 1993-05-10
JP26161293 1993-09-24
JP5-261612 1993-09-24
JP34997293 1993-12-27

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002259818A Division CA2259818C (en) 1993-03-25 1994-03-25 Communication system

Publications (2)

Publication Number Publication Date
CA2119983A1 true CA2119983A1 (en) 1994-09-26
CA2119983C CA2119983C (en) 1999-05-11

Family

ID=27464719

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2119983 Expired - Lifetime CA2119983C (en) 1993-03-25 1994-03-25 Communication system

Country Status (6)

Country Link
JP (9) JP3248807B2 (en)
KR (1) KR0161051B1 (en)
AU (1) AU660123B2 (en)
CA (1) CA2119983C (en)
MX (4) MXPA00004081A (en)
MY (1) MY113937A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8738020B2 (en) 2000-12-15 2014-05-27 Adaptix, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US8760992B2 (en) 2004-12-07 2014-06-24 Adaptix, Inc. Method and system for switching antenna and channel assignments in broadband wireless networks

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE38513E1 (en) 1992-03-26 2004-05-11 Matsushita Electric Industrial Co., Ltd. Communication system
US5802241A (en) 1992-03-26 1998-09-01 Matsushita Electric Industrial Co., Ltd. Communication system
KR100386572B1 (en) * 1999-12-24 2003-06-02 엘지전자 주식회사 System for Digital TV translator
US6889351B1 (en) * 2000-03-30 2005-05-03 Koninklijke Philips Electronics, N.V. Backward compatible multiple data stream transmission method and system for compressed domain signals
CA2431849C (en) 2000-12-15 2013-07-30 Broadstrom Telecommunications, Inc. Multi-carrier communications with group-based subcarrier allocation
JP4256158B2 (en) 2002-12-26 2009-04-22 パナソニック株式会社 Wireless communication apparatus and wireless communication method
JP4871760B2 (en) 2007-02-28 2012-02-08 日立建機株式会社 Motor speed control device for hydraulic drive vehicle
KR101355633B1 (en) * 2007-11-06 2014-01-29 삼성전자주식회사 Encoder and encoding method
JP4734314B2 (en) * 2007-12-10 2011-07-27 パナソニック株式会社 Wireless communication apparatus and wireless communication method
JP6089222B2 (en) * 2012-09-19 2017-03-08 パナソニックIpマネジメント株式会社 refrigerator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181027A (en) * 1985-09-24 1987-04-08 Stc Plc Digital to vestigial sideband conversion
US5176712A (en) * 1988-04-12 1993-01-05 Tranquil Prospects Ltd. Endoprostheses with resorption preventing means
JP2512130B2 (en) * 1989-01-24 1996-07-03 三菱電機株式会社 Error-correction concatenated coding device and error-correction concatenated code decoding device
US5087975A (en) * 1990-11-09 1992-02-11 Zenith Electronics Corporation VSB HDTV transmission system with reduced NTSC co-channel interference
JP3117706B2 (en) * 1990-11-28 2000-12-18 日本放送協会 Data interleaving method and circuit
EP0975168B1 (en) * 1991-03-27 2002-03-27 Matsushita Electric Industrial Co., Ltd. Signal transmission system
JP3241098B2 (en) * 1992-06-12 2001-12-25 株式会社東芝 Multi-system receiver

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9191138B2 (en) 2000-12-15 2015-11-17 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US9203553B1 (en) 2000-12-15 2015-12-01 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US8934445B2 (en) 2000-12-15 2015-01-13 Adaptix, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US8750238B2 (en) 2000-12-15 2014-06-10 Adaptix, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US8934375B2 (en) 2000-12-15 2015-01-13 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US8767702B2 (en) 2000-12-15 2014-07-01 Adaptix, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US9344211B2 (en) 2000-12-15 2016-05-17 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US8958386B2 (en) 2000-12-15 2015-02-17 Adaptix, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US8743717B2 (en) 2000-12-15 2014-06-03 Adaptix, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US9219572B2 (en) 2000-12-15 2015-12-22 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US8891414B2 (en) 2000-12-15 2014-11-18 Adaptix, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US8964719B2 (en) 2000-12-15 2015-02-24 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US8738020B2 (en) 2000-12-15 2014-05-27 Adaptix, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US8743729B2 (en) 2000-12-15 2014-06-03 Adaptix, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US9210708B1 (en) 2000-12-15 2015-12-08 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
US8760992B2 (en) 2004-12-07 2014-06-24 Adaptix, Inc. Method and system for switching antenna and channel assignments in broadband wireless networks
US8797970B2 (en) 2004-12-07 2014-08-05 Adaptix, Inc. Method and system for switching antenna and channel assignments in broadband wireless networks

Also Published As

Publication number Publication date
KR940023243A (en) 1994-10-22
JP3327914B2 (en) 2002-09-24
JP3248807B2 (en) 2002-01-21
JP3881679B2 (en) 2007-02-14
JP2002198928A (en) 2002-07-12
JP3327916B2 (en) 2002-09-24
JP2004343789A (en) 2004-12-02
MXPA03010764A (en) 2009-01-14
CA2119983C (en) 1999-05-11
JP3588463B2 (en) 2004-11-10
JP2002190843A (en) 2002-07-05
JP3327915B2 (en) 2002-09-24
JP2004032747A (en) 2004-01-29
JP2003158501A (en) 2003-05-30
JPH07322219A (en) 1995-12-08
KR0161051B1 (en) 1999-01-15
JP3410085B2 (en) 2003-05-26
MXPA00004081A (en) 2005-09-27
JP3450321B2 (en) 2003-09-22
MXPA00007354A (en) 2005-08-26
JP2002190842A (en) 2002-07-05
MY113937A (en) 2002-06-29
JP2007049723A (en) 2007-02-22
MXPA00004076A (en) 2005-09-27
AU5905294A (en) 1994-10-20
AU660123B2 (en) 1995-06-08
JP2002208906A (en) 2002-07-26

Similar Documents

Publication Publication Date Title
MY127503A (en) Communication system
US4922510A (en) Method and means for variable length coding
JP3058807B2 (en) Method of communicating block coded digital data with associated synchronization / control data
EG20316A (en) An HDTV compression system
CA2119983A1 (en) Communication System
AU5671698A (en) Signalling system
CA2246535A1 (en) Multiple access communications system and method using code and time division
CA2099966A1 (en) Method and Apparatus for Transmitting a Video Signal, and Apparatus for Receiving a Video Signal
IL104636A (en) Apparatus and method for encoding and decoding digital signals
AU6456094A (en) A transmitter for encoding error correction codes and a receiver for decoding error correction codes on a transmission frame
EP0893891A3 (en) High efficiency signaling with minimum spacecraft hardware
EP1182839A3 (en) Convolutionally encoded QAM transmission
WO1999062212A3 (en) Transmission system for transmitting a main signal and an auxiliary signal
EP0217412B1 (en) Coding device selectively connected to a transmission line
TW330365B (en) Method of transmitting and receiving television signals and apparatus for transmitting and receiving television signals
US4573167A (en) Digital communication system, particularly color television transmission system
ES8406019A1 (en) Facsimile data converting system.
WO2001035588A3 (en) Analogue to digital and digital to analogue conversion for broadband transmission
AU4172793A (en) Television system for transmitting pictures in a digital form
US4402010A (en) Digital television signal processing and transmission system
JPH06501344A (en) multichannel data compressor
CA2273973A1 (en) Color facsimile and color facsimile transmission method
WO1999014866A3 (en) Transmission system with improved reconstruction of missing parts
EP1309145A3 (en) Transmission using non-binary error correction codes
JP3059644B2 (en) Auxiliary device for analog signal communication device and communication device using the same

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20140325