CA2328724A1 - Expanded information capacity for existing communication transmission systems - Google Patents
Expanded information capacity for existing communication transmission systems Download PDFInfo
- Publication number
- CA2328724A1 CA2328724A1 CA002328724A CA2328724A CA2328724A1 CA 2328724 A1 CA2328724 A1 CA 2328724A1 CA 002328724 A CA002328724 A CA 002328724A CA 2328724 A CA2328724 A CA 2328724A CA 2328724 A1 CA2328724 A1 CA 2328724A1
- Authority
- CA
- Canada
- Prior art keywords
- modulated
- carrier
- phase
- amplitude
- modulates
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/0803—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division using frequency interleaving, e.g. with precision offset
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- 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
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
Abstract
A system for transmitting digital programming includes a program source providing digital information, circuitry for modulating the digital information onto a visual carrier modulated with analog television programming, and a visual transmitter coupled to the modulating circuitry. Using a phase modulation method, the system phase modulates the digital information onto a visual carrier, reduces the baseband frequencies of the phase modulated visual carrier, and amplitude modulates the phase-modulated video carrier onto a video signal. The amplified and encoded video signal are combined with an amplified sound signal and transmitted. Using an additive method, the system modulates the sidebands of the video carrier with the digital information and amplitude modulates the video signal onto the video carrier. The data-modulated sidebands are phase-shifted such that they will be in quadrature with the amplitude-modulated video signal. The system combines the amplitude-modulated video carrier and the data-modulated quadrature sidebands. With a blended multiplicative/additive method, the system provides phase modulation and quadrature sideband addition to provide an optimized result.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/062,225 US6433835B1 (en) | 1998-04-17 | 1998-04-17 | Expanded information capacity for existing communication transmission systems |
US09/062,225 | 1998-04-17 | ||
PCT/US1999/008513 WO1999055087A1 (en) | 1998-04-17 | 1999-04-16 | Expanded information capacity for existing communication transmission systems |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2328724A1 true CA2328724A1 (en) | 1999-10-28 |
CA2328724C CA2328724C (en) | 2006-07-25 |
Family
ID=22041023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002328724A Expired - Fee Related CA2328724C (en) | 1998-04-17 | 1999-04-16 | Expanded information capacity for existing communication transmission systems |
Country Status (13)
Country | Link |
---|---|
US (2) | US6433835B1 (en) |
EP (1) | EP1072155B1 (en) |
JP (1) | JP2002512493A (en) |
KR (1) | KR100632838B1 (en) |
AT (1) | ATE309674T1 (en) |
AU (2) | AU762851B2 (en) |
CA (1) | CA2328724C (en) |
DE (1) | DE69928240T2 (en) |
ES (1) | ES2253886T3 (en) |
HK (1) | HK1035097A1 (en) |
IL (1) | IL138985A0 (en) |
NO (1) | NO20005130L (en) |
WO (1) | WO1999055087A1 (en) |
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-
1998
- 1998-04-17 US US09/062,225 patent/US6433835B1/en not_active Expired - Lifetime
-
1999
- 1999-04-16 IL IL13898599A patent/IL138985A0/en unknown
- 1999-04-16 JP JP2000545319A patent/JP2002512493A/en active Pending
- 1999-04-16 ES ES99918655T patent/ES2253886T3/en not_active Expired - Lifetime
- 1999-04-16 AU AU36517/99A patent/AU762851B2/en not_active Ceased
- 1999-04-16 EP EP99918655A patent/EP1072155B1/en not_active Expired - Lifetime
- 1999-04-16 KR KR1020007011560A patent/KR100632838B1/en not_active IP Right Cessation
- 1999-04-16 CA CA002328724A patent/CA2328724C/en not_active Expired - Fee Related
- 1999-04-16 DE DE69928240T patent/DE69928240T2/en not_active Expired - Lifetime
- 1999-04-16 AT AT99918655T patent/ATE309674T1/en not_active IP Right Cessation
- 1999-04-16 WO PCT/US1999/008513 patent/WO1999055087A1/en active IP Right Grant
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2000
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2001
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2002
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KR100632838B1 (en) | 2006-10-16 |
DE69928240D1 (en) | 2005-12-15 |
WO1999055087A1 (en) | 1999-10-28 |
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US7333153B2 (en) | 2008-02-19 |
CA2328724C (en) | 2006-07-25 |
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AU2003252849A1 (en) | 2003-11-06 |
EP1072155B1 (en) | 2005-11-09 |
AU3651799A (en) | 1999-11-08 |
ATE309674T1 (en) | 2005-11-15 |
DE69928240T2 (en) | 2006-09-21 |
AU2003252849B2 (en) | 2007-06-28 |
ES2253886T3 (en) | 2006-06-01 |
JP2002512493A (en) | 2002-04-23 |
NO20005130D0 (en) | 2000-10-12 |
US20040100588A1 (en) | 2004-05-27 |
NO20005130L (en) | 2000-12-15 |
HK1035097A1 (en) | 2001-11-09 |
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