USA - Gefen has announced a new method of high definition video extension which can transmit audio and video data up to 150ft over Cat 5 cable - the first time, according to Gefen, that Cat 5 cables can carry the large amounts of data required for HD clarity and precision. New chip technologies have created a method of packaging data that can be transmitted successfully using industry-standard Cat 5E cables, say the company.

Multiple resolutions up to 1080i and multi-channel digital audio are effective at distances up to 150ft, making the HDTV Extender over Cat 5 cable an economical alternative to fibre optics or copper cables for medium-length installations. It is highly advantageous when upgrading audio/video systems from analogue to digital because cabling does not have to be replaced.

THe HDTV Extender is available in two models that work with HD's two most popular interfaces - DVI (digital visual interface) and HDMI (high definition multimedia interface). DVI, often the preferred format for professional AV applications, transmits high-resolution, uncompressed digital video data from source to display. HDMI, geared towards the consumer market, transmits high resolution, uncompressed digital video and multi-channel digital audio from source to display. When used with computer-based systems, DDC control signals are sent in addition to HDTV video on their own dedicated Cat 5 cable.

(Lee Baldock)


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