Two New VoIP and IPTV Patents for Telchemy

Voice and VoIP performance manager Telchemy announced that the United States Patent and Trademark Office awarded the company two additional patents for its VoIP and IPTV performance monitoring and analysis technology. The patents allow for service quality monitoring systems that estimate subjective quality, also known as Quality of Experience (QoE) for VoIP, IPTV, and Videoconferencing services.

The algorithms described in these patents provide more accurate and stable performance metrics in the presence of time varying and transient impairments.
Patent US 7,075,981, dubbed “Dynamic Quality of
Service Monitor,” covers VoIP and IPTV performance
monitoring systems that represent the effects of the relative temporal location of transmission impairments on
user perceived quality.

“Per-Call Quality of Service Monitor for Multimedia
Communications System,” patent US 7,058,048, covers
VoIP and IPTV performance monitoring systems that
measure call quality at discrete time intervals and combine these to form overall perceptual quality scores for each call.

“Telchemy continues to grow and innovate in this
rapidly expanding marketplace,” said Alan Clark,
Telchemy’s CEO and president. “These new patents illustrate our commitment to keeping our products on the leading edge of IP communications technology.”
http://www.telchemy.com