1
Charles Mao
Xiaoping Charles Mao: Power equalizer in a multiple wavelength bidirectional lightwave amplifier. MCI Communications Corporation, July 20, 1999: US05926590 (18 worldwide citation)

A system and method for optimizing the performance, in a multichannel optical transmission system, of an optical signal regenerator, by compensating for input signal power fluctuation and for output signal gain change, and by mildly filtering individual wavelengths between gain block stages. A syste ...


2
Charles Mao
Joseph C Cook, Xiaoping Charles Mao: Dense WDM in the 1310 nm band. MCI Communications Corporation, March 28, 2000: US06043914 (16 worldwide citation)

Dense wavelength division multiplexing within a 1310 nm band is accomplished over a single mode fiber. Carrier wavelengths are selected from within two windows, a low subband and/or a high subband, on either side of a guardband. The guardband includes the zero dispersion wavelength .lambda..sub.0 of ...


3
Charles Mao
Xiaoping Charles Mao: Multiple wavelength bidirectional lightwave amplifier. MCI Communications, November 18, 1997: US05689594 (9 worldwide citation)

A system and method for optimizing the performance, in a multichannel optical transmission system, of an optical signal regenerator, by compensating for input signal power fluctuation and for output signal gain change, and by mildly filtering individual wavelengths between gain block stages. A syste ...


4
Charles Mao
Andrew Niall Robinson, Xiaoping Charles Mao: PMD characterization across multiple optical channels of an optical link. MCI WorldCom, December 10, 2002: US06493116 (6 worldwide citation)

A fiber optic communications link having PMD characterization across multiple optical channels to identify PMD problems. The communications link has adaptive PMD controls employed along the optical link, whereby PMD phenomena detected by instruments, such as PMD compensators, are interpreted as bein ...


5
Charles Mao
Niall Robinson, Charles Mao, Frank A McKiel: Fault isolation of an optical link by correlating PMD events with other measurements. MCI WorldCom, June 11, 2002: US06404520 (5 worldwide citation)

A method and apparatus performing fault management in an optical communications system including a polarization mode dispersion (PMD) compensator. The method and apparatus utilizes a controller receiving notifications indicative of PMD in the system, as well as at least one indicator from a system d ...


6
Warren E Bernard, Philip A Jacobson: System and method for automated remote previewing and purchasing of music, video, software, and other multimedia products. MCI Communications Corporation, June 29, 1999: US05918213 (932 worldwide citation)

An automated product purchasing system allows purchasers to order products via a remote communications medium without having to speak to a sales representative or other human operator. According to the invention, purchasers access the automated product purchasing system and browse among the selectio ...


7
Isaac K Elliott, Sridhar Krishnaswamy: System, method and article of manufacture for communications utilizing calling, plans in a hybrid network. MCI Communications Corporations, February 2, 1999: US05867495 (735 worldwide citation)

Telephone calls, data and other multimedia information is routed through a hybrid network which includes transfer of information across the internet utilizing telephony routing information and internet protocol address information. A media order entry captures complete user profile information for a ...


8
Andrew Dugan, Allen M Holmes, Terence A Robb, Ajay P Deo, Sami Syed, Wendy T Wong: Intelligent network. MCI WorldCom, March 26, 2002: US06363411 (691 worldwide citation)

In a telecommunications switching network having a resource complex including network switches, an intelligent service platform for providing intelligent call processing and service execution for call events received at the switches and requiring call processing services. A centralized administratio ...


9
Sridhar Krishnaswamy, Isaac K Elliott, Tim E Reynolds, Glen A Forgy, Erin M Solbrig: Method for video telephony over a hybrid network. MCI Communications Corporation, December 7, 1999: US05999525 (654 worldwide citation)

Telephone calls, data and other multimedia information including video, audio and data is routed through a switched network which includes transfer of information across the internet. Users can transmit video, audio and data communications of designated quality over the internet to other registered ...


10
Isaac K Elliott, Tim E Reynolds, Sridhar Krishnaswamy: System and method for providing requested quality of service in a hybrid network. MCI Communications Corporation, January 1, 2002: US06335927 (631 worldwide citation)

Telephone calls, data and other multimedia information is routed through a hybrid network which includes transfer of information across the internet. A media order entry captures complete user profile information for a user. This profile information is utilized by the system throughout the media exp ...