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Technical Proposal for DVD-R File System Specifications

WG3-7/24/98-7. Technical Proposal for DVD-R File System Specifications. July 24 , 1998 Matsushita Electric Industrial Co., Ltd. Concept. DVD-R File System should support a general file management functions for “Incremental File Recording” on the following conditions

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Technical Proposal for DVD-R File System Specifications

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  1. WG3-7/24/98-7 Technical ProposalforDVD-R File System Specifications July 24 , 1998 Matsushita Electric Industrial Co., Ltd.

  2. Concept DVD-R File System should support a general file management functions for “Incremental File Recording” on the following conditions - Based on UDF Specifications (Revision 2.0) - Without using any special device commands

  3. Lead-in Area Volume/File Structure & Files Border-out Area Border-in Area File Structure & Files Border-out Area Unrecorded Area Outline of Current Specifications(Version1.0) The start address of Unrecorded Area is recorded in “Lead-in Area” & “Border-in Area” In order to Read/Write these address information from/to “Lead-in Area” & “Border-in Area” DVD-R Specific device commands have to be required!

  4. New Solution for This Issue ICB(Strategy Type 4096) of Root Directory is useful to handle the start address of Unrecorded Area to search the latest Root Directory ICB (Strategy Type 4096) of Root Directory can be written/read by using the conventional device command(WRITE/READ)

  5. Disc Format Operation On Format The first generation of ICB (Root Directory) has the start address of “Unrecorded Area” Write operation

  6. File-a Dir-A Root How to Write a file On write “File-a” of “Dir-A” ① ② ③ ⑥ 1. Find “Unrecorded Area”. (①+②+③) 2. Write files and related file structure.(④) 3. Write “Over-run Extent”.(⑤) 4. Write updated ICB.(⑥) ④ ⑤

  7. File-a Root Dir-B Dir-A File-b How to Read File On read “File-a”of “Dir-A” ① ② ③ ⑪ ⑩ ⑨ ⑧ 1. Find “Unrecorded Area”. (①~⑤) 2. Find the latest ICB for Root Directory.(⑥) 3. Search and read out “File-a”. (⑦~⑪) ④ ⑥ ⑦ ⑤

  8. Summary ICB(Strategy Type 4096) of Root Directory is useful to handle the start address of Unrecorded Area to search the latest Root Directory ICB(Strategy Type 4096) is supported by DVD-ROM & DVD-RAM File System Specifications New Solution for DVD-R is consistent with DVD-ROM & DVD-RAM File System Specifications

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