DE69837985D1 - Verfahren und vorrichtung für den zeilen und rahmensynchronisierten frequenzsprung von videoübertragungen - Google Patents

Verfahren und vorrichtung für den zeilen und rahmensynchronisierten frequenzsprung von videoübertragungen

Info

Publication number
DE69837985D1
DE69837985D1 DE69837985T DE69837985T DE69837985D1 DE 69837985 D1 DE69837985 D1 DE 69837985D1 DE 69837985 T DE69837985 T DE 69837985T DE 69837985 T DE69837985 T DE 69837985T DE 69837985 D1 DE69837985 D1 DE 69837985D1
Authority
DE
Germany
Prior art keywords
line
frequency leakage
video transmissions
frame synchronized
synchronized frequency
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
Application number
DE69837985T
Other languages
English (en)
Other versions
DE69837985T2 (de
Inventor
Paul Wilkinson Dent
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.)
Ericsson Inc
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Application granted granted Critical
Publication of DE69837985D1 publication Critical patent/DE69837985D1/de
Publication of DE69837985T2 publication Critical patent/DE69837985T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/7156—Arrangements for sequence synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
DE69837985T 1997-01-31 1998-01-28 Verfahren und vorrichtung für den zeilen und rahmensynchronisierten frequenzsprung von videoübertragungen Expired - Lifetime DE69837985T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/791,862 US5859664A (en) 1997-01-31 1997-01-31 Method and apparatus for line or frame-synchronous frequency hopping of video transmissions
PCT/US1998/001720 WO1998034402A2 (en) 1997-01-31 1998-01-28 Method and apparatus for line or frame-synchronous frequency hopping of video transmissions
US791862 2004-03-04

Publications (2)

Publication Number Publication Date
DE69837985D1 true DE69837985D1 (de) 2007-08-09
DE69837985T2 DE69837985T2 (de) 2009-01-08

Family

ID=25155009

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69837985T Expired - Lifetime DE69837985T2 (de) 1997-01-31 1998-01-28 Verfahren und vorrichtung für den zeilen und rahmensynchronisierten frequenzsprung von videoübertragungen

Country Status (9)

Country Link
US (1) US5859664A (de)
EP (1) EP0956700B1 (de)
JP (1) JP4165662B2 (de)
CN (1) CN1112040C (de)
AU (1) AU6137198A (de)
CA (1) CA2278091C (de)
DE (1) DE69837985T2 (de)
TW (1) TW393865B (de)
WO (1) WO1998034402A2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6810377B1 (en) * 1998-06-19 2004-10-26 Comsat Corporation Lost frame recovery techniques for parametric, LPC-based speech coding systems
JP2000307972A (ja) * 1999-04-26 2000-11-02 Mitsubishi Electric Corp 半導体集積回路
US6748005B1 (en) * 1999-08-02 2004-06-08 Lucent Technologies Inc. Methods and apparatus for providing a direct frequency hopping wireless interface with a personal computer
FR2828367B1 (fr) * 2001-08-01 2003-12-05 Thomson Licensing Sa Methode et dispositif d'installation de programmes de diffusion
US6985174B1 (en) * 2001-10-30 2006-01-10 Logitech Europe S.A. Dynamic radio frequency interference detection and correction
US20040125239A1 (en) * 2002-12-26 2004-07-01 David Rahn Television tuner supporting channel hopping
EP1880479A1 (de) * 2005-05-13 2008-01-23 Telefonaktiebolaget LM Ericsson (publ) System für ein schnellfrequenzsprungfunkgerät
FR2891968B1 (fr) * 2005-10-12 2008-01-18 Valeo Electronique Sys Liaison Systeme de communication entre une unite d'acquisition d'images video et un ordinateur de bord pour un vehicule automobile
US8406715B2 (en) * 2008-03-27 2013-03-26 Panasonic Automotive Systems of America, division of Panasonic Corporation of North America Method and apparatus for dynamically adapting FM tuner sensitivity to a local environment for a single-tuner system
WO2014080231A1 (en) * 2012-11-23 2014-05-30 Omarco Network Solutions Limited Method of compensating for signal degradation in transmission systems

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE53125B1 (en) * 1981-06-19 1988-07-06 Marconi Co Ltd Radio communications apparatus
DE3266023D1 (en) * 1981-06-22 1985-10-10 Marconi Co Ltd Radio communications receivers
EP0208425A3 (de) * 1985-06-13 1988-01-13 Devon County Council Übertragung per Fernsehsignalnebenträger
US4890283A (en) * 1987-11-19 1989-12-26 North American Philips Corporation High definition television augmentation channel
SE463540B (sv) * 1988-09-19 1990-12-03 Ericsson Telefon Ab L M Saett foer att i ett radiokommunikationssystem digitalisera godtyckliga radiosignaler samt anordning foer utoevande av saettet
US5127021A (en) * 1991-07-12 1992-06-30 Schreiber William F Spread spectrum television transmission
US5140610A (en) * 1991-10-08 1992-08-18 The United States Of America As Represented By The Secretary Of The Army FM video data link spectrum spreading
US5311543A (en) * 1992-10-23 1994-05-10 Schreiber William F Television transmission system using two stages of spead-spectrum processing
US5425050A (en) * 1992-10-23 1995-06-13 Massachusetts Institute Of Technology Television transmission system using spread spectrum and orthogonal frequency-division multiplex
US5412687A (en) * 1993-10-15 1995-05-02 Proxim Incorporated Digital communications equipment using differential quaternary frequency shift keying
GB2288300A (en) * 1994-04-05 1995-10-11 Christopher Robert Turner Video surveillance system using spread spectrum radio communication
US5737026A (en) * 1995-02-28 1998-04-07 Nielsen Media Research, Inc. Video and data co-channel communication system
WO1996029824A1 (en) * 1995-03-17 1996-09-26 Bell Atlantic Network Services, Inc. Television distribution system and method
US5659353A (en) * 1995-03-17 1997-08-19 Bell Atlantic Network Services, Inc. Television distribution system and method
US5712866A (en) * 1995-07-18 1998-01-27 Westinghouse Electric Corporation Small low powered digital transmitter for covert remote surveillance

Also Published As

Publication number Publication date
TW393865B (en) 2000-06-11
DE69837985T2 (de) 2009-01-08
EP0956700B1 (de) 2007-06-27
WO1998034402A2 (en) 1998-08-06
JP4165662B2 (ja) 2008-10-15
CA2278091C (en) 2008-11-18
CN1246223A (zh) 2000-03-01
AU6137198A (en) 1998-08-25
EP0956700A2 (de) 1999-11-17
US5859664A (en) 1999-01-12
JP2001510656A (ja) 2001-07-31
WO1998034402A3 (en) 1998-09-17
CN1112040C (zh) 2003-06-18
CA2278091A1 (en) 1998-08-06

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Legal Events

Date Code Title Description
8332 No legal effect for de
8370 Indication of lapse of patent is to be deleted
8364 No opposition during term of opposition