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Patent applications and USPTO patent grants for Free Systems Pte. Ltd..The latest application filed is for "digital modulation and demodulation technique for reliable wireless (both rf and ir) and wired high bandwidth data transmission".
Patent | Date |
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Digital modulation and demodulation technique for reliable wireless (both RF and IR) and wired high bandwidth data transmission App 20040141568 - Huat, Chua Beng | 2004-07-22 |
Wireless infrared digital audio system Grant 6,671,325 - Lee , et al. December 30, 2 | 2003-12-30 |
Biaural (2channel listening device that is equalized in-stu to compensate for differences between left and right earphone transducers and the ears themselves Grant 6,668,204 - Neoh December 23, 2 | 2003-12-23 |
Infra-red wireless receiver with novel shielding and IR front end signal enhancement Grant 6,614,024 - Oei , et al. September 2, 2 | 2003-09-02 |
Wireless infrared digital audio receiving system Grant 6,614,849 - Chan , et al. September 2, 2 | 2003-09-02 |
Wireless infrared digital audio system App 20030053548 - Lee, Kah Yong ;   et al. | 2003-03-20 |
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