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SightSpeed is a videoconferencing company, supplying VoIP and instant messaging software for Microsoft Windows and Apple Macintosh operating systems. The service allows people to make video calls, computer-to-computer voice calls, and calls to regular telephones, with free and paid versions. In October 2008, the company was acquired by Logitech for $30 million. The Logitech Vid service is based on SightSpeed's technology. Due to competing software, the Logitech Vid video calling service will be discontinued as of 1 July 2013 and the downloading of the product has already been terminated. As a result, Logitech is no longer accepting new account registrations.〔http://www.logitech.com/en-us/support/6164?section=downloads〕 == Technology == SightSpeed uses a proprietary algorithm for video compression. The video conferencing technology is capable of transmitting 30 frame/s video, and uses the standards-based H263 codec. SightSpeed's video codec was originally developed at Cornell University's Discover Lab and is based on H263. SightSpeed's network technology is SIP based. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「SightSpeed」の詳細全文を読む スポンサード リンク
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