CA2144111A1 - Digital Signal Transcoder and Method of Transcoding a Digital Signal - Google Patents

Digital Signal Transcoder and Method of Transcoding a Digital Signal

Info

Publication number
CA2144111A1
CA2144111A1 CA2144111A CA2144111A CA2144111A1 CA 2144111 A1 CA2144111 A1 CA 2144111A1 CA 2144111 A CA2144111 A CA 2144111A CA 2144111 A CA2144111 A CA 2144111A CA 2144111 A1 CA2144111 A1 CA 2144111A1
Authority
CA
Canada
Prior art keywords
digital signal
signal
transcoding
sampling rate
output signal
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
CA2144111A
Other languages
French (fr)
Other versions
CA2144111C (en
Inventor
Keping Chen
Richard A. Kupnicki
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.)
Harris Canada Systems Inc
Original Assignee
Keping Chen
Richard A. Kupnicki
Leitch Technology Corporation
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 Keping Chen, Richard A. Kupnicki, Leitch Technology Corporation filed Critical Keping Chen
Priority to CA 2144111 priority Critical patent/CA2144111C/en
Publication of CA2144111A1 publication Critical patent/CA2144111A1/en
Application granted granted Critical
Publication of CA2144111C publication Critical patent/CA2144111C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

A method and device for transcoding a digital signal first oversamples the input signal, converts the sampling rate to an oversampled output signal, filters the signal to reduce unwanted bands and decimates the oversampled output signal to produce a transcoded signal having the target sampling rate. This allows the conversion to be implemented in the composite domain, requiring a single sampling rate converter, and significantly reduces the complexity of the filter required to filter the output signal .
CA 2144111 1995-03-07 1995-03-07 Digital signal transcoder and method of transcoding a digital signal Expired - Fee Related CA2144111C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2144111 CA2144111C (en) 1995-03-07 1995-03-07 Digital signal transcoder and method of transcoding a digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2144111 CA2144111C (en) 1995-03-07 1995-03-07 Digital signal transcoder and method of transcoding a digital signal

Publications (2)

Publication Number Publication Date
CA2144111A1 true CA2144111A1 (en) 1996-09-08
CA2144111C CA2144111C (en) 2000-09-12

Family

ID=4155377

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2144111 Expired - Fee Related CA2144111C (en) 1995-03-07 1995-03-07 Digital signal transcoder and method of transcoding a digital signal

Country Status (1)

Country Link
CA (1) CA2144111C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7126503B2 (en) 2002-12-18 2006-10-24 Koninklijke Philips Electronics N.V. Digital sampling frequency converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7126503B2 (en) 2002-12-18 2006-10-24 Koninklijke Philips Electronics N.V. Digital sampling frequency converter

Also Published As

Publication number Publication date
CA2144111C (en) 2000-09-12

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