Thin-film patentholder sues Sony over Blu-ray technology

Claims media powerhouse infringing on use of silver alloy in optical disc manufacture

Target Technology of California has filed a lawsuit in US court against Sony for patent violations related to Blu-ray discs manufactured and sold by the electronics giant. As a movie studio, producer of the Playstation 3 and technological champion of the Blu-ray technology, Sony is one of the leading manufacturers of discs using the new high-capacity optical format.

Target claims to have enabled a major cost-reducing stride in original DVD technology by devising silver alloys which could be used in place of the gold layers originally needed by the DVD process. The current dispute revolves around a US patent Target holds over the manufacture and use of certain thin films related to optical data storage. Target's patent claim applies to a film surface composed of a silver/yttrium alloy, and applies to both fixed and recordable media. The patent was originally approved by the US patent authorities in March 2006. According to its promotional materials Target holds a number of other DVD and film-related patents in various jurisdictions, including Europe, Taiwan, Australia, and China. Sony has yet to publicly respond to the suit.

Featured Resources

How inkjet can transform your business

Get more out of your business by investing in the right printing technology

Download now

Journey to a modern workplace with Office 365: which tools and when?

A guide to how Office 365 builds a modern workplace

Download now

Modernise and transform your sales organisation

Learn how a modernised sales process can drive your business

Download now

Your guide to managing cloud transformation risk

Realise the benefits. Mitigate the risks

Download now

Most Popular


How to use Chromecast without Wi-Fi

5 Feb 2020

The top ten password-cracking techniques used by hackers

10 Feb 2020
operating systems

How to fix a stuck Windows 10 update

12 Feb 2020
Microsoft Windows

Windows 7 bug blocks users from shutting down their PCs

10 Feb 2020