CN1439226A - 具有无噪声返回通路的双向电缆系统 - Google Patents

具有无噪声返回通路的双向电缆系统 Download PDF

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Publication number
CN1439226A
CN1439226A CN 01811662 CN01811662A CN1439226A CN 1439226 A CN1439226 A CN 1439226A CN 01811662 CN01811662 CN 01811662 CN 01811662 A CN01811662 A CN 01811662A CN 1439226 A CN1439226 A CN 1439226A
Authority
CN
China
Prior art keywords
signal
feeder
frequency band
top box
cable system
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.)
Pending
Application number
CN 01811662
Other languages
English (en)
Chinese (zh)
Inventor
A－K·拉哈尼
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.)
Advanced Interactive Inc USA
Original Assignee
Advanced Interactive Inc USA
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 Advanced Interactive Inc USA filed Critical Advanced Interactive Inc USA
Publication of CN1439226A publication Critical patent/CN1439226A/zh
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/22—Adaptations for optical transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CN 01811662 2000-04-25 2001-04-25 具有无噪声返回通路的双向电缆系统 Pending CN1439226A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55762900A 2000-04-25 2000-04-25
US09/557,629 2000-04-25

Publications (1)

Publication Number Publication Date
CN1439226A true CN1439226A (zh) 2003-08-27

Family

ID=24226238

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 01811662 Pending CN1439226A (zh) 2000-04-25 2001-04-25 具有无噪声返回通路的双向电缆系统

Country Status (6)

Country Link
EP (1) EP1287693A2 (fr)
CN (1) CN1439226A (fr)
AU (1) AU2001252082A1 (fr)
CA (1) CA2407321A1 (fr)
NZ (1) NZ522452A (fr)
WO (1) WO2001082618A2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5881362A (en) * 1994-11-30 1999-03-09 General Instrument Corporation Of Delaware Method of ingress noise reduction in calbe return paths
DE19581909T1 (de) * 1995-01-30 1998-01-08 Motorola Inc Verfahren und System für das Reinigen eines Frequenzbandes
DE19531118A1 (de) * 1995-08-24 1997-02-27 Sel Alcatel Ag Elektrisches Übertragungssystem, mit einem Breitbandverteilnetz für TV- und Audio-Signale, und mit einer Möglichkeit für interaktive Dienste
EP0762766A3 (fr) * 1995-09-12 1997-11-05 AT&T Corp. Appareil et procédé pour réseaux pour effectuer des communications bidirectionnelles à large bande

Also Published As

Publication number Publication date
AU2001252082A1 (en) 2001-11-07
WO2001082618A3 (fr) 2002-04-11
EP1287693A2 (fr) 2003-03-05
CA2407321A1 (fr) 2001-11-01
WO2001082618A2 (fr) 2001-11-01
NZ522452A (en) 2004-07-30
WO2001082618A9 (fr) 2001-12-06

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication