TW354446B - Virtual broadband technology - Google Patents

Virtual broadband technology

Info

Publication number
TW354446B
TW354446B TW085108533A TW85108533A TW354446B TW 354446 B TW354446 B TW 354446B TW 085108533 A TW085108533 A TW 085108533A TW 85108533 A TW85108533 A TW 85108533A TW 354446 B TW354446 B TW 354446B
Authority
TW
Taiwan
Prior art keywords
pixel
image data
digital
visual image
pixels
Prior art date
Application number
TW085108533A
Other languages
Chinese (zh)
Inventor
Nicholas Sikiotis
Original Assignee
Digital Network System Corp
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 Digital Network System Corp filed Critical Digital Network System Corp
Application granted granted Critical
Publication of TW354446B publication Critical patent/TW354446B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/148—Interfacing a video terminal to a particular transmission medium, e.g. ISDN
    • 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
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • H04N19/45—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder performing compensation of the inverse transform mismatch, e.g. Inverse Discrete Cosine Transform [IDCT] mismatch
    • 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
    • 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
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

A compressing method for processing a visual image data to a compressing type suitable for wideband transmission, wherein the visual image data is formed by a plurality of pixels, each pixel has at least one characteristic represents by a digital alue with respective to the characteristic of the pixel, the method comprising the steps of grouping adjacent pixels, one single and new digital value selected from a set of possible digital values of the pixel group serves to replace the digital values of all the pixel, and the new and single digital value is converted into a transferring value selected from finites possible digital values, thus the group is provided with a compressing type, the aforementioned process is repeated to all the pixels in the visual image data and all the transferring value is sent.
TW085108533A 1995-07-06 1996-08-06 Virtual broadband technology TW354446B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPN3992A AUPN399295A0 (en) 1995-07-06 1995-07-06 Virtual broadband transmission

Publications (1)

Publication Number Publication Date
TW354446B true TW354446B (en) 1999-03-11

Family

ID=3788327

Family Applications (1)

Application Number Title Priority Date Filing Date
TW085108533A TW354446B (en) 1995-07-06 1996-08-06 Virtual broadband technology

Country Status (4)

Country Link
AU (1) AUPN399295A0 (en)
TW (1) TW354446B (en)
WO (1) WO1997002703A1 (en)
ZA (1) ZA965780B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2584999A (en) * 1998-02-05 1999-08-23 Gateway 2000, Inc. High-quality audio signals via telephone line

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5477511A (en) * 1977-12-02 1979-06-21 Fujitsu Ltd Band compression system for picture signal
JPS5477510A (en) * 1977-12-02 1979-06-21 Fujitsu Ltd Band compression system for picture signal
JPH06101841B2 (en) * 1984-01-11 1994-12-12 日本電気株式会社 Method and apparatus for encoding moving image signal
JPS60227582A (en) * 1984-04-25 1985-11-12 Matsushita Electric Works Ltd Still picture transmission system
DE3685589T2 (en) * 1986-03-19 1993-02-04 British Broadcasting Corp VIDEO SIGNAL PROCESSING FOR BANDWIDTH REDUCTION.
US5225904A (en) * 1987-10-05 1993-07-06 Intel Corporation Adaptive digital video compression system
FR2628276B1 (en) * 1988-03-02 1991-06-28 France Etat METHOD FOR REDUCING THROUGHPUT OF A SEQUENCE OF DATA FOR ASSISTING THE RECONSTRUCTION OF AN ELECTRONIC IMAGE FROM A SUB-SAMPLE SIGNAL
JPH02193479A (en) * 1989-01-20 1990-07-31 Sanyo Electric Co Ltd Transmission method for high quality video signal
JP3251002B2 (en) * 1989-08-15 2002-01-28 ソニー株式会社 Apparatus and method for receiving image data
US5155594A (en) * 1990-05-11 1992-10-13 Picturetel Corporation Hierarchical encoding method and apparatus employing background references for efficiently communicating image sequences
JPH0453389A (en) * 1990-06-21 1992-02-20 Graphics Commun Technol:Kk Moving vector detector
JPH04192692A (en) * 1990-11-24 1992-07-10 Sharp Corp Television signal transmission system
GB2258579B (en) * 1991-08-09 1995-06-21 Mutuo Tanaka Monitoring system which monitors object via public line
US5327254A (en) * 1992-02-19 1994-07-05 Daher Mohammad A Method and apparatus for compressing and decompressing image data
WO1994003014A1 (en) * 1992-07-24 1994-02-03 Koz Mark C Low power video security monitoring system
US5392072A (en) * 1992-10-23 1995-02-21 International Business Machines Inc. Hybrid video compression system and method capable of software-only decompression in selected multimedia systems
US5444489A (en) * 1993-02-11 1995-08-22 Georgia Tech Research Corporation Vector quantization video encoder using hierarchical cache memory scheme
US5412429A (en) * 1993-03-11 1995-05-02 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Picture data compression coder using subband/transform coding with a Lempel-Ziv-based coder
US5508744A (en) * 1993-03-12 1996-04-16 Thomson Consumer Electronics, Inc. Video signal compression with removal of non-correlated motion vectors
US5329365A (en) * 1993-07-07 1994-07-12 Rca Thomson Licensing Corporation Method and apparatus for providing compressed non-interlaced scanned video signal
CA2124711A1 (en) * 1993-08-24 1995-02-25 Lee-Fang Wei Concatenated reed-solomon code and trellis coded modulation
US5416520A (en) * 1993-11-30 1995-05-16 Intel Corporation Multiple encoder output buffer apparatus for differential coding of video information

Also Published As

Publication number Publication date
ZA965780B (en) 1997-02-06
WO1997002703A1 (en) 1997-01-23
AUPN399295A0 (en) 1995-07-27

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