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Cable-free TV

JVC shows 1Gbps optical wireless video system

JVC has unveiled a prototype high-speed optical wireless transmission system for the home at Japan's Ceatec 2002 exhibition.

The system is capable of transmission rates up to 1.25Gbps (gigabits per second), which is enough for uncompressed digital video. This innovation allowed JVC to demo the setup by connecting a TV tuner with a plasma display panel without the need for any cables.

The new system is designed to do away with the cable at no loss to picture quality. The top speed of 1.25Gbps is enough to handle uncompressed high-definition digital video, which has a data rate of around 800Mbps to 900Mbps (megabits per second), according to Katsuo Okukai, a researcher at JVC's system network unit.

It has a range of around 10m and is also easy to set up. The optical transmitter in the base unit, which sends the signal to the display, is mounted on motors and automatically searches for the display when it is switched on, said Okukai.

In a demonstration at the show, the search process took a few seconds to find the display. This isn't likely to be a major problem when the system is set up, but might mean a few vital seconds of a sports match or movie are missed should a family member, or pet, happen to block the light beam.

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