The SDV dongles that TiVo promised would arrive this year from Motorola and Cisco have been submitted to CableLabs for formal testing.

These little devices allow for two way communication between CableCard boxes and Cable Companies, so that only the needed programming data is sent, and bandwidth is conserved.

"Motorola and Cisco have both developed external tuning adapters and are seeking qualification by CableLabs(R) before being delivered to cable operators for deployment. The tuning adapters are expected to be offered in the coming months by cable operators including Comcast, Time Warner, Cox, and Cablevision in areas where switched digital technology is being deployed. The cable operators and TiVo plan to work cooperatively to alert TiVo subscribers about the availability or need of the new external adapter and to ensure that installation of the adapter and CableCARDs will be easy and seamless for the consumer.

TiVo has modified its software for its TiVo Series3 and TiVo HD DVRs to communicate with the external Tuning Adapter. TiVo announced that the modified software has been submitted to CableLabs for verification testing. Upon verification, the software upgrade will be made available to TiVo subscribers via a regularly scheduled update.

Switched digital technology enables cable operators to transmit individual channels to customers on an as-needed basis rather than broadcasting all channels to all subscribers all the time. Switched digital technology provides more flexibility for cable operators to utilize network capacity to deliver interactive digital services, high-definition (HD) channels, broadband Internet and digital phone service. The Tuning Adapter is intended to work on any Unidirectional Digital Cable Ready Product (UDCP) that has a USB connector and necessary firmware."