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The blue laser diode in optical disk drive technology

By the late 1990s blue lasers were used for making the masters for DVD discs, but this process used hugely expensive special laser-beam recorders the size of a wardrobe and needing a super-clean, vibration-free environment in which to work properly. The challenge for optical drive … [Read more...]

Filed Under: Blu-ray Tagged With: blue laser, blue laser diode, blue-violet laser, Shuji Nakamura

DVD Forum and the Blu-ray Disk Association (BDA)

The DVD Forum was set up in August 1997 as a voluntary association of hardware manufacturers, software firms and other users of DVDs. The big manufacturers were predicting that beyond-DVD discs and drives would be a reality at the start of the next century. In the event, that proved … [Read more...]

Filed Under: Blu-ray Tagged With: BDA, Blu-ray Disk Association, DVD-Forum

Blu-ray vs HD-DVD – the war of the blue laser optical disks

Shuji Nakamura's blue laser diode exactly fit requirements for next generation DVDs: accurate, reliable, small and affordable both for manufacturing and running costs. It was a brilliant invention, and it offered the opportunity for a single, industry wide high-definition optical storage … [Read more...]

Filed Under: Blu-ray Tagged With: blu-ray, blue laser war, compatibility, HD-DVD

Blu-ray Region Codes

Blu-ray Region codes: DVD region codes were introduced to try to give movie studios some control over global distribution for their movie releases. The system wasn't entirely successful, but the studios have persisted. Though boundaries have changed, Blu-ray too has regional coding. The … [Read more...]

Filed Under: Blu-ray

Blu-Ray – the Hi-Def Blue Laser Disk Technology

Optical disks have come a long way. They began back in the 1980s with the humble CD, which was great for music, computer software and data. Unfortunately it turned out to be poor for movies, though there was some limited success withVideoCD in Asian markets. DVDs came to the rescue in the … [Read more...]

Filed Under: Blu-ray

HD-DVD (High Definition Digital Versatile Disk) – blue laser optical disk

Despite High Definition Digital Versatile Disc HD-DVD) being the original DVD Forum approved successor to the DVD format, it was ultimately doomed, eventually consigned to history by the rival Blu-ray Disk (BD) technology. Originally called Advanced Optical Disc (AOD), the technology's … [Read more...]

Filed Under: Blu-ray Tagged With: HD-DVD, High Definition Digital Versatile Disk, how does HD-DVD work, what is HD-DVD

Blu-ray Disks (BD) – blue laser optical disk technology

Optical disc technologies such as DVD, DVD-R, DVD-RW, and DVD-RAM employ a 650 nm red laser, bond 0.6mm-thick discs and use lenses with a numerical aperture (NA) of 0.6. By employing a short wavelength (405nm) blue violet laser, the Blu-ray Disc (BD) successfully minimises its beam … [Read more...]

Filed Under: Blu-ray Tagged With: BD, Blu-ray Disk, blue-violet laser, optical disk

Blu-ray region codes – map and explanation

Blu-ray Disks (BDs) can contain a region code, similar to the DVD region code but with different boundaries. Region codes place geographical restrictions on where in the world a Blu-ray movie can be played. For example, a BD system bought in the USA region would play only Blu-ray movie disks with … [Read more...]

Filed Under: Blu-ray Tagged With: international Blu-ray regions, What are Blu-ray region codes, what Blu-ray region am I in, what is my Blu-ray region

Gaming Laptop Security Guide: Protecting Your High-End Hardware Investment in 2025

Since Jacob took over PC Tech Guide, we’ve looked at how tech intersects with personal well-being and digital safety. Gaming laptops are now … [Read More...]

20 Cool Creative Commons Photographs About the Future of AI

AI technology is starting to have a huge impact on our lives. The market value for AI is estimated to have been worth $279.22 billion in 2024 and it … [Read More...]

13 Impressive Stats on the Future of AI

AI technology is starting to become much more important in our everyday lives. Many businesses are using it as well. While he has created a lot of … [Read More...]

Graphic Designers on Reddit Share their Views of AI

There are clearly a lot of positive things about AI. However, it is not a good thing for everyone. One of the things that many people are worried … [Read More...]

Redditors Talk About the Impact of AI on Freelance Writers

AI technology has had a huge impact on our lives. A 2023 survey by Pew Research found that 56% of people use AI at least once a day or once a week. … [Read More...]

11 Most Popular Books on Perl Programming

Perl is not the most popular programming language. It has only one million users, compared to 12 million that use Python. However, it has a lot of … [Read More...]

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Recent Posts

Keep Track of Product Serial Numbers

It's always a good idea to document serial numbers of the high priced gadgets in your home or business. If your place burns down, gets damaged in a … [Read More...]

CDR-RW Compatibility Issues

The DVD format has been dogged by compatibility problems from the very beginning. Some of these have now been addressed … [Read More...]

Switch & Sync Software Review

PROS: Switch & Sync is one of the easiest products to use in the synchronization area. CONS: Wireless users will not be able to use this … [Read More...]

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