WO2003027957A8 - Window idle frame memory compression - Google Patents

Window idle frame memory compression

Info

Publication number
WO2003027957A8
WO2003027957A8 PCT/US2002/031329 US0231329W WO03027957A8 WO 2003027957 A8 WO2003027957 A8 WO 2003027957A8 US 0231329 W US0231329 W US 0231329W WO 03027957 A8 WO03027957 A8 WO 03027957A8
Authority
WO
WIPO (PCT)
Prior art keywords
byte values
subset
idle frame
pixel byte
counters
Prior art date
Application number
PCT/US2002/031329
Other languages
French (fr)
Other versions
WO2003027957A1 (en
Inventor
Ying Cui
Original Assignee
Intel 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 Intel Corp filed Critical Intel Corp
Publication of WO2003027957A1 publication Critical patent/WO2003027957A1/en
Publication of WO2003027957A8 publication Critical patent/WO2003027957A8/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/005—Statistical coding, e.g. Huffman, run length coding

Abstract

Idle frames received by a graphics controller are compressed by evaluating two idle frames to create an encoding table used to replace selected pixel byte values in subsequent idle frames with codes. Possible pixel byte values are associated with a first set of counters, with each Counter counting several different byte values as they occur with the first idle frame. A first subset of the Possible pixel byte values is selected based on the counts in the first counters and each byte value in the first subset is associated with a second Counter. The occurrences of the first subset of pixel byte values are counted in the second idle frame, and a second subset of pixel byte values is selected based on the counts in the second counters and used to create the encoding table. In one aspect, the encoding table is created when the second of pixel byte values satisfy a threshold.
PCT/US2002/031329 2001-09-28 2002-09-30 Window idle frame memory compression WO2003027957A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/968,166 2001-09-28
US09/968,166 US6731290B2 (en) 2001-09-28 2001-09-28 Window idle frame memory compression

Publications (2)

Publication Number Publication Date
WO2003027957A1 WO2003027957A1 (en) 2003-04-03
WO2003027957A8 true WO2003027957A8 (en) 2003-07-24

Family

ID=25513843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/031329 WO2003027957A1 (en) 2001-09-28 2002-09-30 Window idle frame memory compression

Country Status (4)

Country Link
US (2) US6731290B2 (en)
CN (1) CN100367316C (en)
TW (1) TWI244052B (en)
WO (1) WO2003027957A1 (en)

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US9218040B2 (en) 2012-09-27 2015-12-22 Apple Inc. System cache with coarse grain power management
US9058676B2 (en) * 2013-03-26 2015-06-16 Apple Inc. Mechanism to detect idle screen on
US9153212B2 (en) * 2013-03-26 2015-10-06 Apple Inc. Compressed frame writeback and read for display in idle screen on case
US9400544B2 (en) 2013-04-02 2016-07-26 Apple Inc. Advanced fine-grained cache power management
US8984227B2 (en) 2013-04-02 2015-03-17 Apple Inc. Advanced coarse-grained cache power management
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US9261939B2 (en) 2013-05-09 2016-02-16 Apple Inc. Memory power savings in idle display case
US10565677B2 (en) * 2017-10-16 2020-02-18 Think Silicon Sa System and method for adaptive z-buffer compression in low power GPUS and improved memory operations with performance tracking
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Also Published As

Publication number Publication date
CN1561504A (en) 2005-01-05
US7042461B2 (en) 2006-05-09
WO2003027957A1 (en) 2003-04-03
TWI244052B (en) 2005-11-21
US20040174369A1 (en) 2004-09-09
US6731290B2 (en) 2004-05-04
CN100367316C (en) 2008-02-06
US20030067471A1 (en) 2003-04-10

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