Multiplex communications – Wide area network – Packet switching
Patent
1994-01-11
1996-05-07
Hsu, Alpus H.
Multiplex communications
Wide area network
Packet switching
370 858, 370 941, 370 952, 395375, 395500, H04J 302, G06F 1300
Patent
active
055153739
ABSTRACT:
A low-cost yet high-performance, moderate bandwidth (up to 2 Mbps) global telecommunications interface to new and existing computers allows high-performance, low-cost telecommunications platforms to support global fax, data, voice, and other data streams in an intuitive way. The telecommunications interface provides a very low-cost solution to international connectivity for a broad class of existing computers while providing high-performance wide-area data transfer. Convenient and reliable global communications over the phone line may thus be achieved. From a rudimentary viewpoint, the telecommunications interface provides for an elegant, economical implementation of a fax/data modem. The telecommunications interface provides both a time-division multiplexed interface mode for constant bit rate communications and a packetized interface mode for variable bit rate communications. Multiple streams of digital and/or analog-derived data may be handled simultaneously. DMA and non-DMA interface mode am provided in order to achieve compatibility with a broad range of existing and new computers.
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Lynch John
Nichols James B.
Apple Computer Inc.
Hsu Alpus H.
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