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

Most Popular Reviews

Latest Articles


PCW Evaluation Team

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.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Matthew Stivala

HP OfficeJet 250 Mobile Printer

The HP OfficeJet 250 Mobile Printer is a great device that fits perfectly into my fast paced and mobile lifestyle. My first impression of the printer itself was how incredibly compact and sleek the device was.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?