CA2627037A1 - Video compression system - Google Patents

Video compression system Download PDF

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Publication number
CA2627037A1
CA2627037A1 CA002627037A CA2627037A CA2627037A1 CA 2627037 A1 CA2627037 A1 CA 2627037A1 CA 002627037 A CA002627037 A CA 002627037A CA 2627037 A CA2627037 A CA 2627037A CA 2627037 A1 CA2627037 A1 CA 2627037A1
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CA
Canada
Prior art keywords
color
intensities
gray values
words
green
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Granted
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CA002627037A
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French (fr)
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CA2627037C (en
Inventor
William A. Dambrackas
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Vertiv IT Systems Inc
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Individual
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Publication of CA2627037A1 publication Critical patent/CA2627037A1/en
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Publication of CA2627037C publication Critical patent/CA2627037C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/20Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods 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
    • H04N19/103Selection of coding mode or of prediction mode
    • H04N19/105Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169Methods 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
    • H04N19/182Methods 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 pixel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/423Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
    • H04N19/426Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements using memory downsizing methods
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/507Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction using conditional replenishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90Methods 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
    • H04N19/93Run-length coding
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00Aspects of data communication
    • G09G2370/24Keyboard-Video-Mouse [KVM] switch

Abstract

A video compression system (Fig. 2) is disclosed that is optimized to take advantage of the types of redundancies typically occurring on computer screen (11) and the types of video loss acceptable to real time interative computer users (11). It automatically adapts to a wide variety of changing network (29) bandwidth conditions and can accommodate any video resolution and an unlimited number of colors. The video compression encoder can be implemented with either hardware or software and it compresses the source video into a series of data packets that are a fixed length of 8 bits or more.

Claims (10)

1. A method of compressing fixed-bit RGB video, comprising:

reducing an available number of different pixel colors by:

grouping predetermined intensities of the red, green and blue components of each pixel color into intensity zones; and adding a greater number of gray intensity zones than would be naturally created when said red, green and blue components are all in the same said intensity zones as each other.
2. A method of encoding video information by:

providing color packets with 5 bits yielding 32 words for color identification;
predetermining 3 red values, 3 blue values and 3 green values for a total of 27 possible color combinations;

correlating 32 words with the 27 possible color combinations yielding 5 remaining words; predetermining 5 extra gray values; and correlating the remaining 5 words with the 5 extra gray values.
3. A method according to claim 2, further comprising:

providing color packets with greater than 5 bits; and dynamically selecting the 5 bit packets for lower color resolutions and the higher bit packets for higher color resolutions.
4. A method of encoding video information, comprising:
selecting a predetermined number of intensities of red, green, and blue color components for said video information;

determining additional gray values other than predetermined number of gray values created by each combination of said selected intensities in which red, green, and blue components are present in equal intensity; and encoding said video information using said additional gray values, said predetermined number of gray values, and colors other than said predetermined number of gray values available from the combination of said selected intensities of color components.
5. A method according to claim 4, wherein said selecting predetermined number of intensities of color components comprises selecting predetermined number of intensities often used in said video information.
6. A method according to claim 4, wherein said selecting predetermined number of intensities of color components comprises selecting 3 intensities of red, green, and blue components for a total of 27 possible color combinations;
said determining additional gray values comprises determining additional 5 gray values other than 3 predetermined gray values created by each combination of said selected 3 intensities in which red, green, and blue components are present in equal intensity; and said encoding comprises creating color packets with 5 bits by correlating 32 words with the 27 possible color combinations yielding 5 remaining words and correlating the remaining 5 words with said additional 5 gray values.
7. A method according to claim 6, further comprising:
providing color packets with greater than 5 bits; and dynamically selecting the 5 bit packets for lower color resolutions and the packets with more than 5 bits for higher color resolutions.
8. A method according to claim 4 wherein said selecting predetermined number of intensities of color components being based on a popularity of use of said intensities.
9. A method according to claim 8 wherein said popularity of use for all colors including grays is assigned based on a collection of arbitrary computer console screens.
10. A method according to claim 4, wherein said selecting predetermined number of intensities of color components comprises selecting 5 intensities of red, green, and blue components for a total fo 125 possible color combination;
said determining additional gray values comprises determining additional 3 gray values other than 5 predetermined gray values created by each combination of said selected 5 intensities in which red, green, and blue components are present in equal intensity; and said encoding comprises creating color packets with 7 bits by correlating 128 words with the 125 possible color combination yielding 3 remaining words and correlating the remaining 3 words with said additional 3 gray values.
CA2627037A 2002-10-01 2003-04-07 Video compression system Expired - Lifetime CA2627037C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/260,534 2002-10-01
US10/260,534 US7321623B2 (en) 2002-10-01 2002-10-01 Video compression system
CA002487550A CA2487550C (en) 2002-10-01 2003-04-07 Video compression system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002487550A Division CA2487550C (en) 2002-10-01 2003-04-07 Video compression system

Publications (2)

Publication Number Publication Date
CA2627037A1 true CA2627037A1 (en) 2004-04-15
CA2627037C CA2627037C (en) 2012-01-17

Family

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Family Applications (4)

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CA 2625658 Abandoned CA2625658A1 (en) 2002-10-01 2003-04-07 Video compression system
CA002487550A Expired - Lifetime CA2487550C (en) 2002-10-01 2003-04-07 Video compression system
CA2627037A Expired - Lifetime CA2627037C (en) 2002-10-01 2003-04-07 Video compression system
CA2625462A Expired - Lifetime CA2625462C (en) 2002-10-01 2003-04-07 Video compression system

Family Applications Before (2)

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CA 2625658 Abandoned CA2625658A1 (en) 2002-10-01 2003-04-07 Video compression system
CA002487550A Expired - Lifetime CA2487550C (en) 2002-10-01 2003-04-07 Video compression system

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA2625462A Expired - Lifetime CA2625462C (en) 2002-10-01 2003-04-07 Video compression system

Country Status (10)

Country Link
US (12) US7321623B2 (en)
EP (1) EP1547263B1 (en)
JP (6) JP3831397B2 (en)
CN (3) CN1669233B (en)
AU (1) AU2003230815A1 (en)
CA (4) CA2625658A1 (en)
IL (1) IL167787A (en)
MY (1) MY137325A (en)
TW (1) TWI235006B (en)
WO (1) WO2004032356A1 (en)

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