JP2006050648A - メモリ管理方法 - Google Patents
メモリ管理方法 Download PDFInfo
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- JP2006050648A JP2006050648A JP2005235918A JP2005235918A JP2006050648A JP 2006050648 A JP2006050648 A JP 2006050648A JP 2005235918 A JP2005235918 A JP 2005235918A JP 2005235918 A JP2005235918 A JP 2005235918A JP 2006050648 A JP2006050648 A JP 2006050648A
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- 238000007726 management method Methods 0.000 title claims abstract description 30
- 230000036316 preload Effects 0.000 claims abstract description 184
- 238000012217 deletion Methods 0.000 claims description 48
- 230000037430 deletion Effects 0.000 claims description 48
- 238000000034 method Methods 0.000 description 28
- 230000002452 interceptive effect Effects 0.000 description 23
- 238000010586 diagram Methods 0.000 description 18
- 230000003139 buffering effect Effects 0.000 description 17
- 230000007423 decrease Effects 0.000 description 9
- 239000000872 buffer Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000009191 jumping Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/40—Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/327—Table of contents
- G11B27/329—Table of contents on a disc [VTOC]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/34—Indicating arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
Abstract
【解決手段】 プリロードのためのメモリ管理方法において、(a)プリロード対象ファイルの状態情報が含まれたメモリ管理テーブルを記録する段階と、(b)前記状態情報に基づいて前記プリロード対象ファイルを削除する段階とを含むことを特徴とする。
【選択図】 図11
Description
disk0://lid://http://したがって、DVD300に記録されているプリロード対象ファイルA.HTMを呼出する場合に使われる経路はdisk0://DVD_ENAV/A.HTMで表示され、第2メモリ3にキャッシュされているプリロード対象ファイルA.HTMを呼出する場合にlid://DVD_ENAV/A.HTMで表示され、インターネットサーバーに貯蔵されているプリロード対象ファイルA.HTMを呼出する場合にhttp://www.samsung.com/DVD_ENAV/A.HTMで表示される。さらに、いろいろなDVD300がローディングされる場合にDVD各々のリソースロケータはdisk0://(またはdvd://)、disk1://、disk2://、disk3://、・・で表示されうる。
指示するプリロード対象ファイルを第2メモリ3にあらかじめ読出すAPIである。使われる媒介変数はプリロードリストファイル及びプリロード対象ファイルの位置情報を示す。
指示するプリロード対象ファイルを第2メモリ3にあらかじめ読出すAPIである。使われる媒介変数はプリロードリストファイル、プリロード対象ファイルの位置情報、さらにプリロード対象ファイルの属性を示しうる。
指示する削除対象ファイルを第2メモリ3から削除するAPIである。媒介変数は削除リストファイル及び削除対象ファイルの位置情報を示す。
Vo:第1メモリ2からAVデータが抜け出る速度またはAVデコーダ4のデータ消耗速度、Tp:区間cでプリロードを行うのにかかった時間、Vr:ディスク300からデータを読出す速度tN_ecc:プリロード対象ファイルの読出前に読出さねばならない全体ECCブロックの個数Ta:アングルブロックでジャンプするのにかかる総時間Bs:第1メモリ2で確保されねばならない最小限のデータ大きさ(ここではDVD−Video規格1.0で指定されたメモリ大きさ221セクタ)
式(1)でVo×Tpは、区間cでプリロードの遂行により減少するデータ量を表す。一方、tN_ecc×2048×8×16は区間bで読出したデータの長さ(セクタの数)であり、Vrはデータの読出速度であるためにtN_ecc×2048×8×16/Vrは区間bの時間となる。すなわち、(Vr−Vo)×(tN_ecc×2048×8×16/Vr)は区間bで増加するデータ量を表す。一方、Vo×Taは区間aでアングルブロックジャンプによって減少するデータ量を表す。Bsは確保されねばならない最小データ量を表す。一方、Tpは2×Tj+De/Vr+Tkを意味する。Tj、De、Vr及びTkの意味は前述した通りである。
B.PLDの対象ファイル(De=2685KB):Tp=4000msec(=1500msec×2+2685KB×8/22000000+0)
C.PLDの対象ファイル(De=269KB):Tp=3100msec(=1500msec×2+269KB×8/22000000+0)
VTS_01_1.VOBの再生中にA.PLDの対象ファイル、B.PLDの対象ファイル、C.PLDの対象ファイルを順に開くためには次の値を計算しなければならない。
2 第1メモリ
3 第2メモリ
4 AVデコーダ
5 プレゼンテーションエンジン
Claims (5)
- プリロードのためのメモリ管理方法において、
(a)プリロード対象ファイルの状態情報が含まれたメモリ管理テーブルを記録する段階と、
(b)前記状態情報に基づいて前記プリロード対象ファイルを削除する段階とを含むことを特徴とするメモリ管理方法。 - (c)前記状態情報に基づいて前記プリロード対象ファイルに対するガーベジコレクションを行う段階をさらに含むことを特徴とする請求項1に記載のメモリ管理方法。
- 前記(b)段階は該当プリロード対象ファイルに対する使用が完了すれば使用完了及び削除可能であることを前記状態情報として表示する段階を含むことを特徴とする請求項2に記載のメモリ管理方法。
- 前記(c)段階は、(c1)該当プリロード対象ファイルが使用完了及び削除可能である場合に該プリロードファイルを物理的に削除する段階と、(c2)削除されたプリロード対象ファイルが削除されて存在していないことを前記状態情報として表示する段階とを含むことを特徴とする請求項2に記載のメモリ管理方法。
- 前記(c)段階は、(c3)メモリに記録された他のプリロード対象ファイルを再配列する段階を含むことを特徴とする請求項4に記載のメモリ管理方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20010033526 | 2001-06-14 | ||
KR20010060137 | 2001-09-27 | ||
KR20010065393 | 2001-10-23 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002173359A Division JP3799301B2 (ja) | 2001-06-14 | 2002-06-13 | プリロード情報が記録された情報貯蔵媒体、その再生装置及び再生方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006050648A true JP2006050648A (ja) | 2006-02-16 |
JP4559322B2 JP4559322B2 (ja) | 2010-10-06 |
Family
ID=27350478
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002173359A Expired - Fee Related JP3799301B2 (ja) | 2001-06-14 | 2002-06-13 | プリロード情報が記録された情報貯蔵媒体、その再生装置及び再生方法 |
JP2005235918A Expired - Fee Related JP4559322B2 (ja) | 2001-06-14 | 2005-08-16 | メモリ管理方法 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002173359A Expired - Fee Related JP3799301B2 (ja) | 2001-06-14 | 2002-06-13 | プリロード情報が記録された情報貯蔵媒体、その再生装置及び再生方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20030049017A1 (ja) |
EP (3) | EP1669996A3 (ja) |
JP (2) | JP3799301B2 (ja) |
CN (3) | CN100466090C (ja) |
TW (1) | TWI224316B (ja) |
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Also Published As
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EP1669996A2 (en) | 2006-06-14 |
EP1667115A2 (en) | 2006-06-07 |
CN1327431C (zh) | 2007-07-18 |
TWI224316B (en) | 2004-11-21 |
US20030049017A1 (en) | 2003-03-13 |
CN1607598A (zh) | 2005-04-20 |
EP1667115A3 (en) | 2006-07-12 |
JP2003153210A (ja) | 2003-05-23 |
JP4559322B2 (ja) | 2010-10-06 |
CN100466090C (zh) | 2009-03-04 |
EP1267352A3 (en) | 2004-10-13 |
CN100472634C (zh) | 2009-03-25 |
EP1267352A2 (en) | 2002-12-18 |
JP3799301B2 (ja) | 2006-07-19 |
CN1607597A (zh) | 2005-04-20 |
CN1404056A (zh) | 2003-03-19 |
EP1669996A3 (en) | 2006-07-05 |
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