WO1995022864A3 - Method and apparatus for combating co-channel ntsc interference for digital tv transmission - Google Patents

Method and apparatus for combating co-channel ntsc interference for digital tv transmission Download PDF

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Publication number
WO1995022864A3
WO1995022864A3 PCT/IB1995/000069 IB9500069W WO9522864A3 WO 1995022864 A3 WO1995022864 A3 WO 1995022864A3 IB 9500069 W IB9500069 W IB 9500069W WO 9522864 A3 WO9522864 A3 WO 9522864A3
Authority
WO
WIPO (PCT)
Prior art keywords
filter
combating
digital
transmission
ntsc interference
Prior art date
Application number
PCT/IB1995/000069
Other languages
French (fr)
Other versions
WO1995022864A2 (en
Inventor
Samir Hulyalkar
Original Assignee
Philips Electronics Nv
Philips Norden Ab
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 Philips Electronics Nv, Philips Norden Ab filed Critical Philips Electronics Nv
Priority to EP95905745A priority Critical patent/EP0693243B1/en
Priority to JP52169295A priority patent/JP3762429B2/en
Priority to DE69519770T priority patent/DE69519770T2/en
Publication of WO1995022864A2 publication Critical patent/WO1995022864A2/en
Publication of WO1995022864A3 publication Critical patent/WO1995022864A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/211—Ghost signal cancellation
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03312—Arrangements specific to the provision of output signals
    • H04L25/03318—Provision of soft decisions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03382—Single of vestigal sideband
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03484—Tapped delay lines time-recursive
    • H04L2025/03496—Tapped delay lines time-recursive as a prediction filter

Abstract

A rejection filter for use at an ATV receiver which is designed to process co-channel interference so as to produce at the filter output of the filter, a residual interference spectrum which is as flat as possible. The filter exploits the fact that only the picture and the sound carriers need to be sufficiently attenuated and cancels NTSC co-channel interference with only a small degradation in performance when AWGN is also present.
PCT/IB1995/000069 1994-02-10 1995-02-01 Method and apparatus for combating co-channel ntsc interference for digital tv transmission WO1995022864A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP95905745A EP0693243B1 (en) 1994-02-10 1995-02-01 Apparatus for combating co-channel ntsc interference for digital tv transmission
JP52169295A JP3762429B2 (en) 1994-02-10 1995-02-01 Method and apparatus for suppressing co-channel NTSC interference for digital TV transmission
DE69519770T DE69519770T2 (en) 1994-02-10 1995-02-01 DEVICE FOR PREVENTING SAME-CHANNEL NTSC INTERFERENCE IN DIGITAL TV BROADCASTING

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/197,773 1994-02-10
US08/197,773 US5452015A (en) 1994-02-10 1994-02-10 Method and apparatus for combating co-channel NTSC interference for digital TV transmission

Publications (2)

Publication Number Publication Date
WO1995022864A2 WO1995022864A2 (en) 1995-08-24
WO1995022864A3 true WO1995022864A3 (en) 1995-09-14

Family

ID=22730703

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1995/000069 WO1995022864A2 (en) 1994-02-10 1995-02-01 Method and apparatus for combating co-channel ntsc interference for digital tv transmission

Country Status (5)

Country Link
US (2) US5452015A (en)
EP (1) EP0693243B1 (en)
JP (1) JP3762429B2 (en)
DE (1) DE69519770T2 (en)
WO (1) WO1995022864A2 (en)

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Also Published As

Publication number Publication date
US5452015A (en) 1995-09-19
EP0693243A1 (en) 1996-01-24
EP0693243B1 (en) 2001-01-03
US5512957A (en) 1996-04-30
JP3762429B2 (en) 2006-04-05
JPH08509113A (en) 1996-09-24
WO1995022864A2 (en) 1995-08-24
DE69519770T2 (en) 2001-08-30
DE69519770D1 (en) 2001-02-08

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