CA2058559A1 - Co-channel interference filter for television receiver - Google Patents

Co-channel interference filter for television receiver

Info

Publication number
CA2058559A1
CA2058559A1 CA 2058559 CA2058559A CA2058559A1 CA 2058559 A1 CA2058559 A1 CA 2058559A1 CA 2058559 CA2058559 CA 2058559 CA 2058559 A CA2058559 A CA 2058559A CA 2058559 A1 CA2058559 A1 CA 2058559A1
Authority
CA
Canada
Prior art keywords
interference
channel interference
control signal
interference filter
television receiver
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.)
Granted
Application number
CA 2058559
Other languages
French (fr)
Other versions
CA2058559C (en
Inventor
Richard W. Citta
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.)
Zenith Electronics LLC
Original Assignee
Zenith Electronics LLC
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
Priority claimed from US07/784,334 external-priority patent/US5162900A/en
Application filed by Zenith Electronics LLC filed Critical Zenith Electronics LLC
Publication of CA2058559A1 publication Critical patent/CA2058559A1/en
Application granted granted Critical
Publication of CA2058559C publication Critical patent/CA2058559C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Noise Elimination (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

A television signal receiver includes a comb filter having a plurality of spaced nulls for reducing undesired co-channel interference. The depth of the nulls is established in response to a control signal representing the strength of the undesired co-channel interference to provide an optimized tradeoff between interference attenuation and signal-to-noise degradation. The control signal is preferably generated in response to a received reference signal such as a pseudo random channel equalization code. The output of the comb filter is characterized by an intersymbol interference component which is canceled is an intersymbol interference filter which is also responsive to the control signal.
CA 2058559 1991-10-29 1991-12-30 Co-channel interference filter for television receiver Expired - Lifetime CA2058559C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US784,334 1991-10-29
US07/784,334 US5162900A (en) 1990-10-19 1991-10-29 Co-channel interference filter for television receiver

Publications (2)

Publication Number Publication Date
CA2058559A1 true CA2058559A1 (en) 1993-04-30
CA2058559C CA2058559C (en) 1999-08-17

Family

ID=25132118

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2058559 Expired - Lifetime CA2058559C (en) 1991-10-29 1991-12-30 Co-channel interference filter for television receiver

Country Status (1)

Country Link
CA (1) CA2058559C (en)

Also Published As

Publication number Publication date
CA2058559C (en) 1999-08-17

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry