EP0685138A1 - Verfahren und einrichtung zur verminderung der vorkodierungsverluste während der anwendung einer nachkammfilterschaltung, um die interferenz zwischen kanälen in hdtv-übertragungen zu vermindern - Google Patents

Verfahren und einrichtung zur verminderung der vorkodierungsverluste während der anwendung einer nachkammfilterschaltung, um die interferenz zwischen kanälen in hdtv-übertragungen zu vermindern

Info

Publication number
EP0685138A1
EP0685138A1 EP95901571A EP95901571A EP0685138A1 EP 0685138 A1 EP0685138 A1 EP 0685138A1 EP 95901571 A EP95901571 A EP 95901571A EP 95901571 A EP95901571 A EP 95901571A EP 0685138 A1 EP0685138 A1 EP 0685138A1
Authority
EP
European Patent Office
Prior art keywords
symbol
post
errors
receiver
channel interference
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.)
Withdrawn
Application number
EP95901571A
Other languages
English (en)
French (fr)
Inventor
Samir Narayan Hulyalkar
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Philips Electronics NV
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 Koninklijke Philips Electronics NV, Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of EP0685138A1 publication Critical patent/EP0685138A1/de
Withdrawn legal-status Critical Current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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • 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
    • H04N7/015—High-definition television systems
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Error Detection And Correction (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Television Systems (AREA)
EP95901571A 1993-12-20 1994-12-12 Verfahren und einrichtung zur verminderung der vorkodierungsverluste während der anwendung einer nachkammfilterschaltung, um die interferenz zwischen kanälen in hdtv-übertragungen zu vermindern Withdrawn EP0685138A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US17047193A 1993-12-20 1993-12-20
PCT/IB1994/000412 WO1995018504A2 (en) 1993-12-20 1994-12-12 Method and apparatus for reducing precoding loss when using a post-comb filtering approach to reduce co-channel interference in high definition television transmission
US170471 1998-10-13

Publications (1)

Publication Number Publication Date
EP0685138A1 true EP0685138A1 (de) 1995-12-06

Family

ID=22619981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95901571A Withdrawn EP0685138A1 (de) 1993-12-20 1994-12-12 Verfahren und einrichtung zur verminderung der vorkodierungsverluste während der anwendung einer nachkammfilterschaltung, um die interferenz zwischen kanälen in hdtv-übertragungen zu vermindern

Country Status (3)

Country Link
EP (1) EP0685138A1 (de)
JP (1) JP4014627B2 (de)
WO (1) WO1995018504A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1065392C (zh) * 1998-08-04 2001-05-02 国家科学技术委员会高技术研究发展中心 采用动态ram实现数据交织和去交织的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833693A (en) * 1985-11-21 1989-05-23 Codex Corporation Coded modulation system using interleaving for decision-feedback equalization
GB2226206B (en) * 1988-12-14 1993-03-17 Stc Plc Hybrid pcm/dpcm codec
US5052000A (en) * 1989-06-09 1991-09-24 At&T Bell Laboratories Technique for improving the operation of decision feedback equalizers in communications systems utilizing error correction
US5121203A (en) * 1990-10-19 1992-06-09 Zenith Electronics Corporation HDTV transmission system with reduced NTSC CO-channel interference
FR2678452B1 (fr) * 1991-06-25 1996-11-29 Thomson Csf Procede et dispositif de protection contre les erreurs bits et les pertes de cellules dans un reseau temporel asynchrone pour services audiovisuels.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9518504A3 *

Also Published As

Publication number Publication date
WO1995018504A3 (en) 1995-07-27
WO1995018504A2 (en) 1995-07-06
JPH08511149A (ja) 1996-11-19
JP4014627B2 (ja) 2007-11-28

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Legal Events

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