U.S. Patent for Prioritization Technology

July 11, 2006

Circadence Announces U.S. Patent for Prioritization Technology

Invention Bolsters Company's Already Strong IP Portfolio

BOULDER, Colo., July 11 /PRNewswire/ – Circadence Corporation, a leading provider of technology to the U.S. Government and enterprise customers that enables the efficient use of bandwidth, today announced that it is has been awarded a new patent by the United States Patent and Trademark Office. The Company was issued U.S. Patent No. 6,990,531, "System and Method for Providing Last-Mile Prioritization." This is the fifth patent that has been awarded to Circadence and the first to recognize the innovation of Circadence's Web Assured Response Protocol(TM), or "WARP(TM)" offering. Circadence also has nine pending patent applications and recently filed a provisional patent application for its next-generation web acceleration technology.

"We are pleased and proud to have been awarded this patent," said Michael J. Moniz, Chief Executive Officer of Circadence. "The granting of this patent confirms our technology leadership in field of bandwidth efficiency, reflects our history of innovation and further strengthens our intellectual property portfolio."

About the Issued Patent

U.S. Patent No. 6,990,531, "System and Method for Providing Last-Mile Prioritization"

This patent describes systems and methods for prioritizing data traffic over a shared bandwidth connection. In one embodiment, traffic is prioritized implicitly by governing the rate at which data is launched into the shared bandwidth connection. In another embodiment, mechanisms that couple the Internet to the shared bandwidth connection are explicitly regulated through a control interface. Priority information is coupled through the Internet to front-end computers. The front-end computers couple to the shared bandwidth connection and implement the implicit and/or explicit regulation.

"This is the core patent of our WARP offering," said Mark Vange, Chief Technology Officer of Circadence, "and affirms the uniqueness of our approach to dynamically detecting the amount of bandwidth available in a given link, prioritizing multiple data streams over that link, and maximizing the throughput of that link."

About Circadence Corporation

Circadence Corporation, founded in 1993 as VR-1, Inc., has its origins in the massive multi-user online simulations industry. Based in Boulder, Colorado, Circadence grew through several acquisitions, successful product launches and the formation of strategic partnerships including Microsoft, Deutsche Telekom, and Hewlett Packard. The Company's proven Transport Morphing Protocol(TM) (TMP(TM)), built into the Company's WARP solution, enables efficient use of bandwidth with additional data transport speed, reliability and consistency.

Source: Circadence Corporation

CONTACT: Peter-Christian Olivo of Circadence Corporation, +1-303-413-8888, polivo@circadence.com