TW423240B - 1/4 size real time decoding of digital video - Google Patents

1/4 size real time decoding of digital video Download PDF

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Publication number
TW423240B
TW423240B TW87118965A TW87118965A TW423240B TW 423240 B TW423240 B TW 423240B TW 87118965 A TW87118965 A TW 87118965A TW 87118965 A TW87118965 A TW 87118965A TW 423240 B TW423240 B TW 423240B
Authority
TW
Taiwan
Prior art keywords
block
discrete cosine
weighting function
inverse
inverse discrete
Prior art date
Application number
TW87118965A
Other languages
English (en)
Chinese (zh)
Inventor
Ching-Fang Chang
Naofumi Yanagihara
Original Assignee
Sony Electronics Inc
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 US08/970,338 external-priority patent/US6104838A/en
Priority claimed from US08/970,880 external-priority patent/US6111989A/en
Application filed by Sony Electronics Inc filed Critical Sony Electronics Inc
Application granted granted Critical
Publication of TW423240B publication Critical patent/TW423240B/zh

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/147—Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4084—Scaling of whole images or parts thereof, e.g. expanding or contracting in the transform domain, e.g. fast Fourier transform [FFT] domain scaling
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/18—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
    • 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
    • H04N19/48—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Software Systems (AREA)
  • Databases & Information Systems (AREA)
  • Algebra (AREA)
  • General Engineering & Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Complex Calculations (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Processing (AREA)
TW87118965A 1997-11-14 1999-02-05 1/4 size real time decoding of digital video TW423240B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/970,338 US6104838A (en) 1997-11-14 1997-11-14 1/16 size real time decoding of digital video
US08/970,880 US6111989A (en) 1997-11-14 1997-11-14 1/4 size real time decoding of digital video

Publications (1)

Publication Number Publication Date
TW423240B true TW423240B (en) 2001-02-21

Family

ID=27130535

Family Applications (1)

Application Number Title Priority Date Filing Date
TW87118965A TW423240B (en) 1997-11-14 1999-02-05 1/4 size real time decoding of digital video

Country Status (4)

Country Link
EP (2) EP0917105A3 (https=)
JP (2) JP4510946B2 (https=)
CN (2) CN1179568C (https=)
TW (1) TW423240B (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2579502C (en) 2004-09-15 2014-05-27 Electronics And Telecommunications Research Institute Digital television transmission and receiving apparatus and method using 1/4 rate coded robust data
US7930869B2 (en) 2007-12-21 2011-04-26 Pitney Bowes Inc. Inserter control method
FR3050598B1 (fr) * 2016-04-26 2020-11-06 Bcom Procede de decodage d'une image numerique, procede de codage, dispositifs, et programmes d'ordinateurs associes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5262854A (en) * 1992-02-21 1993-11-16 Rca Thomson Licensing Corporation Lower resolution HDTV receivers
US5614952A (en) * 1994-10-11 1997-03-25 Hitachi America, Ltd. Digital video decoder for decoding digital high definition and/or digital standard definition television signals
US5708732A (en) * 1996-03-06 1998-01-13 Hewlett-Packard Company Fast DCT domain downsampling and inverse motion compensation
JPH10145788A (ja) * 1996-11-11 1998-05-29 Sumitomo Electric Ind Ltd 映像再生装置
US6175592B1 (en) * 1997-03-12 2001-01-16 Matsushita Electric Industrial Co., Ltd. Frequency domain filtering for down conversion of a DCT encoded picture

Also Published As

Publication number Publication date
JP4511451B2 (ja) 2010-07-28
JP4510946B2 (ja) 2010-07-28
CN1290338C (zh) 2006-12-13
EP2284793A1 (en) 2011-02-16
CN1230078A (zh) 1999-09-29
CN1179568C (zh) 2004-12-08
JPH11234672A (ja) 1999-08-27
EP0917105A3 (en) 2003-11-19
JP2006115536A (ja) 2006-04-27
CN1547396A (zh) 2004-11-17
EP0917105A2 (en) 1999-05-19

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MM4A Annulment or lapse of patent due to non-payment of fees