CA2119983C - Communication system - Google Patents
Communication systemInfo
- Publication number
- CA2119983C CA2119983C CA 2119983 CA2119983A CA2119983C CA 2119983 C CA2119983 C CA 2119983C CA 2119983 CA2119983 CA 2119983 CA 2119983 A CA2119983 A CA 2119983A CA 2119983 C CA2119983 C CA 2119983C
- Authority
- CA
- Canada
- Prior art keywords
- signal
- data
- level
- receiver
- transmission
- 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.)
- Expired - Lifetime
Links
- 238000004891 communication Methods 0.000 title abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 177
- 238000012937 correction Methods 0.000 claims abstract description 69
- 238000007906 compression Methods 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000010586 diagram Methods 0.000 description 229
- 230000008054 signal transmission Effects 0.000 description 97
- 238000000034 method Methods 0.000 description 92
- 230000001965 increasing effect Effects 0.000 description 60
- 230000009471 action Effects 0.000 description 36
- 239000013598 vector Substances 0.000 description 29
- 230000000694 effects Effects 0.000 description 26
- 238000010276 construction Methods 0.000 description 22
- 239000000969 carrier Substances 0.000 description 18
- 230000002829 reductive effect Effects 0.000 description 16
- 230000007423 decrease Effects 0.000 description 12
- 230000012447 hatching Effects 0.000 description 12
- 230000003247 decreasing effect Effects 0.000 description 11
- 230000010287 polarization Effects 0.000 description 10
- 230000002441 reversible effect Effects 0.000 description 10
- 230000006866 deterioration Effects 0.000 description 9
- 230000035945 sensitivity Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 230000015654 memory Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000013144 data compression Methods 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 230000000644 propagated effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 3
- 101000969688 Homo sapiens Macrophage-expressed gene 1 protein Proteins 0.000 description 2
- 102100021285 Macrophage-expressed gene 1 protein Human genes 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 101100217607 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ATO2 gene Proteins 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
- H04L1/006—Trellis-coded modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/04—Modulator circuits; Transmitter circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/183—Multiresolution systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2604—Multiresolution systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3488—Multiresolution systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
- H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
- H04L27/3854—Demodulator 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
-
- 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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
-
- 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
- H04N21/63—Control 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
- H04N21/647—Control 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
- H04N21/64784—Data processing by the network
- H04N21/64792—Controlling the complexity of the content stream, e.g. by dropping packets
-
- 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
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Error Detection And Correction (AREA)
- Mobile Radio Communication Systems (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Transmitters (AREA)
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 |
|---|---|---|---|
| JP6646193 | 1993-03-25 | ||
| JP13298493 | 1993-05-10 | ||
| JP26161293 | 1993-09-24 | ||
| JP5-66461 | 1993-12-27 | ||
| JP34997293 | 1993-12-27 | ||
| JP5-132984 | 1993-12-27 | ||
| JP5-261612 | 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 CA2119983A1 (en) | 1994-09-26 |
| CA2119983C true 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 (ja) |
| KR (1) | KR0161051B1 (ja) |
| AU (1) | AU660123B2 (ja) |
| CA (1) | CA2119983C (ja) |
| MX (4) | MXPA00004076A (ja) |
| MY (1) | MY113937A (ja) |
Families Citing this family (12)
| 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 (ko) * | 1999-12-24 | 2003-06-02 | 엘지전자 주식회사 | 디지털 티브이 중계 시스템 |
| 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 |
| JP4031707B2 (ja) | 2000-12-15 | 2008-01-09 | アダプティックス インコーポレイテッド | グループベースのサブキャリア割当による多重キャリア通信 |
| US6947748B2 (en) | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
| JP4256158B2 (ja) | 2002-12-26 | 2009-04-22 | パナソニック株式会社 | 無線通信装置及び無線通信方法 |
| US7573851B2 (en) | 2004-12-07 | 2009-08-11 | Adaptix, Inc. | Method and system for switching antenna and channel assignments in broadband wireless networks |
| JP4871760B2 (ja) | 2007-02-28 | 2012-02-08 | 日立建機株式会社 | 油圧駆動車両の原動機回転数制御装置 |
| KR101355633B1 (ko) * | 2007-11-06 | 2014-01-29 | 삼성전자주식회사 | 인코더 및 인코딩 방법 |
| JP4734314B2 (ja) * | 2007-12-10 | 2011-07-27 | パナソニック株式会社 | 無線通信装置及び無線通信方法 |
| JP6089222B2 (ja) * | 2012-09-19 | 2017-03-08 | パナソニックＩｐマネジメント株式会社 | 冷蔵庫 |
Family Cites Families (7)
| 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 (ja) * | 1989-01-24 | 1996-07-03 | 三菱電機株式会社 | 誤り訂正連接符号化装置および誤り訂正連接符号復号化装置 |
| US5087975A (en) * | 1990-11-09 | 1992-02-11 | Zenith Electronics Corporation | VSB HDTV transmission system with reduced NTSC co-channel interference |
| JP3117706B2 (ja) * | 1990-11-28 | 2000-12-18 | 日本放送協会 | データインタリーブ方式および回路 |
| DE69233183D1 (de) * | 1991-03-27 | 2003-10-02 | Matsushita Electric Ind Co Ltd | Signalübertragungssystem |
| JP3241098B2 (ja) * | 1992-06-12 | 2001-12-25 | 株式会社東芝 | 多方式対応の受信装置 |
-
1994
- 1994-03-25 CA CA 2119983 patent/CA2119983C/en not_active Expired - Lifetime
- 1994-03-25 JP JP7943294A patent/JP3248807B2/ja not_active Expired - Lifetime
- 1994-03-25 MY MYPI94000704A patent/MY113937A/en unknown
- 1994-03-25 KR KR1019940006012A patent/KR0161051B1/ko not_active IP Right Cessation
- 1994-03-25 AU AU59052/94A patent/AU660123B2/en not_active Expired
-
2000
- 2000-04-27 MX MXPA00004076A patent/MXPA00004076A/es active IP Right Grant
- 2000-04-27 MX MXPA00004081A patent/MXPA00004081A/es active IP Right Grant
- 2000-07-27 MX MXPA00007354A patent/MXPA00007354A/es active IP Right Grant
-
2001
- 2001-10-03 JP JP2001307620A patent/JP3327916B2/ja not_active Expired - Lifetime
- 2001-10-03 JP JP2001307515A patent/JP3327915B2/ja not_active Expired - Lifetime
- 2001-10-03 JP JP2001307472A patent/JP3327914B2/ja not_active Expired - Lifetime
- 2001-10-19 JP JP2001321548A patent/JP3410085B2/ja not_active Expired - Lifetime
-
2002
- 2002-08-23 JP JP2002243896A patent/JP3450321B2/ja not_active Expired - Lifetime
-
2003
- 2003-06-05 JP JP2003160697A patent/JP3588463B2/ja not_active Expired - Lifetime
- 2003-11-25 MX MXPA03010764A patent/MXPA03010764A/es active IP Right Grant
-
2004
- 2004-06-21 JP JP2004182399A patent/JP3881679B2/ja not_active Expired - Lifetime
-
2006
- 2006-09-11 JP JP2006245292A patent/JP2007049723A/ja not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| MXPA03010764A (es) | 2009-01-14 |
| JP3410085B2 (ja) | 2003-05-26 |
| JP3327916B2 (ja) | 2002-09-24 |
| JP3327915B2 (ja) | 2002-09-24 |
| JP2002190843A (ja) | 2002-07-05 |
| AU660123B2 (en) | 1995-06-08 |
| MXPA00004081A (es) | 2005-09-27 |
| JP2003158501A (ja) | 2003-05-30 |
| CA2119983A1 (en) | 1994-09-26 |
| JP2007049723A (ja) | 2007-02-22 |
| JP3881679B2 (ja) | 2007-02-14 |
| JP3588463B2 (ja) | 2004-11-10 |
| JP2004343789A (ja) | 2004-12-02 |
| JP2004032747A (ja) | 2004-01-29 |
| JP3327914B2 (ja) | 2002-09-24 |
| JP2002208906A (ja) | 2002-07-26 |
| JP3450321B2 (ja) | 2003-09-22 |
| KR940023243A (ko) | 1994-10-22 |
| AU5905294A (en) | 1994-10-20 |
| MXPA00007354A (es) | 2005-08-26 |
| JP2002190842A (ja) | 2002-07-05 |
| JP2002198928A (ja) | 2002-07-12 |
| MY113937A (en) | 2002-06-29 |
| KR0161051B1 (ko) | 1999-01-15 |
| MXPA00004076A (es) | 2005-09-27 |
| JP3248807B2 (ja) | 2002-01-21 |
| JPH07322219A (ja) | 1995-12-08 |
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| CA2119983C (en) | Communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20140325 |