SE0202614D0 - Device and system for effecting change of video signal - Google Patents

Device and system for effecting change of video signal

Info

Publication number
SE0202614D0
SE0202614D0 SE0202614A SE0202614A SE0202614D0 SE 0202614 D0 SE0202614 D0 SE 0202614D0 SE 0202614 A SE0202614 A SE 0202614A SE 0202614 A SE0202614 A SE 0202614A SE 0202614 D0 SE0202614 D0 SE 0202614D0
Authority
SE
Sweden
Prior art keywords
video signal
signal
coder
converted
digital
Prior art date
Application number
SE0202614A
Other languages
Swedish (sv)
Other versions
SE525615C2 (en
SE0202614L (en
Inventor
Harald Brusewitz
Original Assignee
Iqc Transcoding 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 Iqc Transcoding Ab filed Critical Iqc Transcoding Ab
Priority to SE0202614A priority Critical patent/SE525615C2/en
Publication of SE0202614D0 publication Critical patent/SE0202614D0/en
Priority to PCT/SE2003/001378 priority patent/WO2004023820A1/en
Priority to AU2003256213A priority patent/AU2003256213A1/en
Publication of SE0202614L publication Critical patent/SE0202614L/en
Publication of SE525615C2 publication Critical patent/SE525615C2/en

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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • 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

Abstract

A device and a system for converting or reducing the bit rate in a digital video signal, or for compressing a digital video signal. The video signal is subjected to a transformation utilising quantised transform components, and supporting information. The device as a separate one or included in the system may include a decoder, which receives the video signal to be converted, and a coder, which provides the digital signal in converted or reduced form. Alternatively, the device forms a coder. The respective device is arranged to modify solely the transform components, which means that the supporting information is at least substantially not influenced. The device enables a decrease of the bit rate in a coded video or compression of the video signal without the occurrence of any substantial deterioration of the image or signal quality.
SE0202614A 2002-09-04 2002-09-04 Device for effecting video signal change SE525615C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0202614A SE525615C2 (en) 2002-09-04 2002-09-04 Device for effecting video signal change
PCT/SE2003/001378 WO2004023820A1 (en) 2002-09-04 2003-09-04 A device and a system for providing a change of a video signal
AU2003256213A AU2003256213A1 (en) 2002-09-04 2003-09-04 A device and a system for providing a change of a video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0202614A SE525615C2 (en) 2002-09-04 2002-09-04 Device for effecting video signal change

Publications (3)

Publication Number Publication Date
SE0202614D0 true SE0202614D0 (en) 2002-09-04
SE0202614L SE0202614L (en) 2004-03-05
SE525615C2 SE525615C2 (en) 2005-03-22

Family

ID=20288890

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0202614A SE525615C2 (en) 2002-09-04 2002-09-04 Device for effecting video signal change

Country Status (3)

Country Link
AU (1) AU2003256213A1 (en)
SE (1) SE525615C2 (en)
WO (1) WO2004023820A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4034317B2 (en) 2005-03-29 2008-01-16 富士通株式会社 Image encoding device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09322165A (en) * 1996-05-31 1997-12-12 Sony Corp Image decoding device and method, and image reproducing device
EP0913058B1 (en) * 1996-07-15 2004-09-29 SNELL & WILCOX LIMITED Video signal compression
US6263021B1 (en) * 1998-09-18 2001-07-17 Sarnoff Corporation Treating non-zero quantized transform coefficients as zeros during video compression processing
US6763067B2 (en) * 2000-10-10 2004-07-13 Sarnoff Corporation Rate control for bitstream re-encoding

Also Published As

Publication number Publication date
WO2004023820A1 (en) 2004-03-18
AU2003256213A1 (en) 2004-03-29
SE525615C2 (en) 2005-03-22
SE0202614L (en) 2004-03-05

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