Freespan^TM  technology is designed to support an advance and robust wireless audio system with following features:

• High fidelity true bit exact CD quality audio data delivery system
• Excellent Coexistence in 2.4Ghz environment
• Low power architecture with advanced power management features
• Support SPDIF Transmission
• Low audio latency that support AV application
• Allow One to Many Transmission
• Small form factor

Being the one of the pioneers in wireless digital audio since 1999,   FreeSystems had been awarded numerous patents that have been incorporated into our Freespan^TM technology.  Some of these are :-

• With the advanced Forward Error Correction algorithm, Freespan^TM  wireless transmission is capable of making correction on the fly and allows seamless antenna switching within the data packet without being data lost.  This technique is being covered under FreeSystems US patents no. US6510182, US6614849, US6671325 and US6741659.

• Advanced Antenna Diversity (US patents no. US7236549) is another key technique to maintain QOS for audio streaming especially for wireless headphone application where multipath/fading is a key concern.  With Freespan^TM  innovative technique, the antenna can be switched instantaneously at anytime of the transmission data packet or at every data frame boundary.
• Unlike WIFI transmission, Freespan^TM  employs a narrow band (6Mhz), low RF power system where it can coexist with wireless devices especially WIFI. FreeSystems developed sniffer algorithm that detect presence of WIFI router and automatically avoid clashing of RF channel with WIFI during initial startup. In  case of  fixed frequency interference during audio transmission,   Freespan^TM algorithm will find next best RF channel and make a seamless switch over to clean RF channel to continue  the audio transmission.
• To counter Frequency Hopping device transmission interference, a time diversity algorithm (US patents Appln no. 20070104248, 20070104249, 20070104285) was developed and incorporated into Freespan^TM   technology.  With this algorithm, it enables a reliable unlimited nodes broadcast transmission without need of feedback signal.

Riding on these key techniques, FreeSystems has further developed applications that allow wireless audio streaming with PAN (Pico Area Network) communication, wireless audio relay capability and other innovative solutions that we work closely with our customers to realize their applications.