GB2398452B - Method and apparatus for controlling video telephony communications - Google Patents

Method and apparatus for controlling video telephony communications

Info

Publication number
GB2398452B
GB2398452B GB0303638A GB0303638A GB2398452B GB 2398452 B GB2398452 B GB 2398452B GB 0303638 A GB0303638 A GB 0303638A GB 0303638 A GB0303638 A GB 0303638A GB 2398452 B GB2398452 B GB 2398452B
Authority
GB
United Kingdom
Prior art keywords
video telephony
controlling video
telephony communications
communications
controlling
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 - Fee Related
Application number
GB0303638A
Other versions
GB2398452A (en
GB0303638D0 (en
Inventor
Simon Fabri
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.)
NEC Technologies UK Ltd
Original Assignee
NEC Technologies UK Ltd
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 NEC Technologies UK Ltd filed Critical NEC Technologies UK Ltd
Priority to GB0303638A priority Critical patent/GB2398452B/en
Publication of GB0303638D0 publication Critical patent/GB0303638D0/en
Publication of GB2398452A publication Critical patent/GB2398452A/en
Application granted granted Critical
Publication of GB2398452B publication Critical patent/GB2398452B/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
    • 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
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • 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
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2227—Quality of service monitoring
    • 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
    • H04N19/136—Incoming video signal characteristics or properties
    • 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
    • H04N19/154—Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion
    • 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
    • H04N19/179—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 scene or a shot
    • 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
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/50—Telephonic communication in combination with video communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
GB0303638A 2003-02-17 2003-02-17 Method and apparatus for controlling video telephony communications Expired - Fee Related GB2398452B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0303638A GB2398452B (en) 2003-02-17 2003-02-17 Method and apparatus for controlling video telephony communications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0303638A GB2398452B (en) 2003-02-17 2003-02-17 Method and apparatus for controlling video telephony communications

Publications (3)

Publication Number Publication Date
GB0303638D0 GB0303638D0 (en) 2003-03-19
GB2398452A GB2398452A (en) 2004-08-18
GB2398452B true GB2398452B (en) 2004-09-29

Family

ID=9953178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0303638A Expired - Fee Related GB2398452B (en) 2003-02-17 2003-02-17 Method and apparatus for controlling video telephony communications

Country Status (1)

Country Link
GB (1) GB2398452B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050064821A1 (en) * 2003-09-22 2005-03-24 Telefonaktiebolaget Lm Ericsson (Publ) Alternative service management
US20050180338A1 (en) * 2004-02-17 2005-08-18 Nokia Corporation Swapping voice and video calls
CN1889777A (en) * 2006-07-19 2007-01-03 华为技术有限公司 Business exchaging method for switching from 2G to 3G mobile communication system
EP2239916A1 (en) * 2009-04-08 2010-10-13 EADS Secure Networks Oy Improved application of unreliable transfer mechanisms
US9445051B1 (en) 2015-08-14 2016-09-13 Qualcomm Incorporated Sender side video telephony downgrade
US11277453B2 (en) * 2019-05-24 2022-03-15 International Business Machines Corporation Media communication management

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2366703A (en) * 2000-05-22 2002-03-13 Nec Corp Communications accessory also able to connect via cellular phoe.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2366703A (en) * 2000-05-22 2002-03-13 Nec Corp Communications accessory also able to connect via cellular phoe.

Also Published As

Publication number Publication date
GB2398452A (en) 2004-08-18
GB0303638D0 (en) 2003-03-19

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100217