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GB2277659B - Transmitting digital signals - Google Patents

Transmitting digital signals

Info

Publication number
GB2277659B
GB2277659B GB9307803A GB9307803A GB2277659B GB 2277659 B GB2277659 B GB 2277659B GB 9307803 A GB9307803 A GB 9307803A GB 9307803 A GB9307803 A GB 9307803A GB 2277659 B GB2277659 B GB 2277659B
Authority
GB
United Kingdom
Prior art keywords
digital signals
transmitting digital
transmitting
signals
digital
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
GB9307803A
Other versions
GB9307803D0 (en
GB2277659A (en
Inventor
Barry Donald Ruberry Miles
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.)
MILES CONSULTANTS Ltd
Original Assignee
MILES CONSULTANTS 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 MILES CONSULTANTS Ltd filed Critical MILES CONSULTANTS Ltd
Priority to GB9307803A priority Critical patent/GB2277659B/en
Publication of GB9307803D0 publication Critical patent/GB9307803D0/en
Publication of GB2277659A publication Critical patent/GB2277659A/en
Application granted granted Critical
Publication of GB2277659B publication Critical patent/GB2277659B/en
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
    • 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
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/462—Testing group delay or phase shift, e.g. timing jitter
    • 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
    • H04L1/24—Testing correct operation
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • H04L1/244—Testing correct operation by comparing a transmitted test signal with a locally generated replica test sequence generators
    • 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
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
    • H04N7/54—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal the signals being synchronous
    • H04N7/56—Synchronising systems therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Dc Digital Transmission (AREA)
GB9307803A 1993-04-15 1993-04-15 Transmitting digital signals Expired - Lifetime GB2277659B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9307803A GB2277659B (en) 1993-04-15 1993-04-15 Transmitting digital signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9307803A GB2277659B (en) 1993-04-15 1993-04-15 Transmitting digital signals

Publications (3)

Publication Number Publication Date
GB9307803D0 GB9307803D0 (en) 1993-06-02
GB2277659A GB2277659A (en) 1994-11-02
GB2277659B true GB2277659B (en) 1998-01-21

Family

ID=10733893

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9307803A Expired - Lifetime GB2277659B (en) 1993-04-15 1993-04-15 Transmitting digital signals

Country Status (1)

Country Link
GB (1) GB2277659B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129748A (en) * 1975-09-10 1978-12-12 Idr, Inc. Phase locked loop for providing continuous clock phase correction
EP0144979A2 (en) * 1983-12-07 1985-06-19 Siemens Aktiengesellschaft Method of measuring the bit error rate of binary digital signals
GB2199470A (en) * 1986-12-31 1988-07-06 Racal Recorders Ltd Phase jitter detection and reduction, clock extraction
US4821287A (en) * 1987-10-21 1989-04-11 F. L. Jennings Apparatus and method for detecting digital carrier synchronization problems
US4953181A (en) * 1987-10-21 1990-08-28 Lear Siegler Jennings Corp. Apparatus and method for detecting digital carrier synchronization problems
GB2271492A (en) * 1992-03-26 1994-04-13 Motorola Inc Apparatus for and method of synchronizing a clock signal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129748A (en) * 1975-09-10 1978-12-12 Idr, Inc. Phase locked loop for providing continuous clock phase correction
EP0144979A2 (en) * 1983-12-07 1985-06-19 Siemens Aktiengesellschaft Method of measuring the bit error rate of binary digital signals
GB2199470A (en) * 1986-12-31 1988-07-06 Racal Recorders Ltd Phase jitter detection and reduction, clock extraction
US4821287A (en) * 1987-10-21 1989-04-11 F. L. Jennings Apparatus and method for detecting digital carrier synchronization problems
US4953181A (en) * 1987-10-21 1990-08-28 Lear Siegler Jennings Corp. Apparatus and method for detecting digital carrier synchronization problems
GB2271492A (en) * 1992-03-26 1994-04-13 Motorola Inc Apparatus for and method of synchronizing a clock signal

Also Published As

Publication number Publication date
GB9307803D0 (en) 1993-06-02
GB2277659A (en) 1994-11-02

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