Motorola has agreed to acquire video systems vendor Tut Systems for $39 million in cash, or $1.15 per share.

The move is only the latest acquisition meant to bolster Motorola’s growing presence in the residential video market. Already a vendor of passive optical networking access systems to Verizon Communications and video set-top boxes, Motorola last month acquired Netopia, a vendor of DSL customer premises equipment and remote management software, for about $208 million in cash. In September, Motorola acquired Vertasent, a vendor of resource management software for video-on-demand (VOD) applications, for an undisclosed sum. In July, it acquired VOD equipment vendor Broadbus. In April it announced a deal to jointly develop IP home gateways with Amedia Networks. And in January it acquired Swedish set-top vendor Kreatel.

Tut reported nearly $28 million in revenue for the first nine months of this year (a 4% increase from 2005) and a net loss of $9 million, or $0.27 per share (a 44% improvement from 2005). At the end of September, it had about $4.6 million in cash and equivalents. The company stumbled this year as delays in the availability of video set-top boxes employing the newest compression technology, MPEG-4, lowered earnings. But it has been bullish about demand for high-definition versions of its products in particular.

Last year, Tut acquired access equipment vendor Copper Mountain for about $10 million in stock to get the company’s engineering talent rather than its broadband remote access server and DSLAM businesses.