Sony must pay $25 million in royalties to a patent-licensing company for using protected digital camera technology that lets its cameras work with Macs, Bloomberg reports.

A US jury found that Sony infringed four patents belonging to St. Clair Intellectual Property Consultants. The patents are for cameras that work with Macs, IBM PCs and some PCs running Windows.

The patent-licensing company had requested $171 million in royalties on Sony's $3.01 billion value of camera sales since 1998. The company acquired the patents in 1995, and the litigation began in August 2001.

Sony defended itself by saying its cameras work in a "totally different" manner from the patents in question in the case, and that the Macs and PCs themselves actually process the data into images.

Sony plans to challenge the outcome of the case in the appeals court.