Technical proposal for dvd r file system specifications
Download
1 / 8

Technical Proposal for DVD-R File System Specifications - PowerPoint PPT Presentation


  • 138 Views
  • Uploaded on

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

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Technical Proposal for DVD-R File System Specifications' - mada


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Technical proposal for dvd r file system specifications

WG3-7/24/98-7

Technical ProposalforDVD-R File System Specifications

July 24 , 1998

Matsushita Electric Industrial Co., Ltd.


Concept
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


Outline of current specifications version1 0

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!


New solution for this issue
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)


Disc format operation
Disc Format Operation

On Format

The first generation of ICB

(Root Directory) has

the start address of

“Unrecorded Area”

Write operation


How to write a file

File-a

Dir-A

Root

How to Write a file

On write “File-a” of “Dir-A”

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)


How to read file

File-a

Root

Dir-B

Dir-A

File-b

How to Read File

On read “File-a”of “Dir-A”

1. Find “Unrecorded Area”.

(①~⑤)

2. Find the latest ICB

for Root Directory.(⑥)

3. Search and read out “File-a”.

(⑦~⑪)


Summary
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


ad