Blu-ray read-only format to be finalized early 2005

Companies backing Blu-ray Disc will finalize the read-only version of the optical-disc format early next year, a Sony spokesman said earlier last week.

The completion of the first version of the BD-ROM specification will give media companies the information they need to produce prerecorded discs holding high-definition content such as movies.

There are two parts to the specification: the logical format, which specifies the way in which content is stored on the optical discs, and the physical format, which defines the physical properties of the disc. The physical format was decided earlier this year and it's the completion of the logical format in early 2005 that will signal the end of work on the first version of BD-ROM.

The work is scheduled to end before equipment that is necessary to mass produce the discs becomes available in the first half of 2005, Sony spokesman Taro Takamine said Nov. 30. Sony is one of the main promoters of the format.

Work is already ongoing with the logical format. It was originally based only on the MPEG2 video codec but, in September, companies supporting Blu-ray Disc said they were adding MPEG4 and VC1 video codecs. VC1 is based on Microsoft's Windows Media 9 codec, and was previously called VC9. MPEG4.AVC is based on the H.264 codec.

The physical disc specifications for the read-only version of HD-DVDs (High Definition/High Density-DVDs), Blu-ray Disc's competitor format, were approved this June.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Paul Kallender

IDG News Service
Show Comments


James Cook University - Master of Data Science Online Course

Learn more >


Sansai 6-Outlet Power Board + 4-Port USB Charging Station

Learn more >



Back To Business Guide

Click for more ›

Brand Post

Bitdefender 2018

Roam freely in the digital world. Critically acclaimed performance and security at your fingertips.

Most Popular Reviews

Latest Articles


PCW Evaluation Team

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?