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IEEE1394, sometimes also called FireWire or i.LINK, is a serial high speed bus protocol initially invented by Apple Computer in 1995. In contrast to the Universal Serial Bus Protocol, implementing the IEEE1394 Bus Protocol is quite an expensive process -- implementors have to obtain documentation and licenses from the IEEE1394 Trade Alliance, as the 1394 spec is not open and many parts of the protocol are protected by patents.

Since every device has to implement both host and client modes of operation, IEEE1394 chipsets are usually quite expensive compared to USB chipsets providing the same functionality.

Concerning DVB there are:

Concerning V4L, see here.

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