Avocent Huntsville Corporation

Avocent California Corporation

Charles Lally

Sheng Li

C David Covington

Richard L Moore

Iain Huntly-Playle

In a keyboard-video-mouse ('KVM') system in which a target computer may be wirelessly accessed by a plurality of remote stations, a method includes, by the target computer: obtaining a frame of video data; transmitting packets for the frame; transmitting a query packet; obtaining a list of requests from at least one of the remote stations, each request from a particular remote station identifying packets missed by that particular remote station; and resending at least some of the requested packets.

Wireless broadcast protocol

In a wireless keyboard-video-mouse ('KVM') system in which a remote computer accesses the video output data of a target computer, a method of providing video data from the target computer to the remote computer, a method includes compressing at least some of the video data using a line fitting compression scheme to produce at least one sequence of absolute coded pixel segments and relative coded pixel segments which combine to represent the video data; and providing the sequence of absolute coded pixel segments and relative coded pixel segments to the remote computer.

Compression systems and methods

In a wireless keyboard-video-mouse ('KVM') system in which a remote computer accesses the video output data of a target computer, a method of providing video data from the target computer to the remote computer, includes obtaining an analog video signal from a target computer; disabling data compression of the video signal; determining a first phase (P) for analog-to-digital (A/D) conversion of the video signal; beginning compression of the video signal; and adjusting the first phase of the A/D conversion to produced a second phase (P'), based, at least in part, on a number of segments required to transmit the compressed video signal.

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Vista, CA, United States of America

Charles Lally