Multiplex communications – Wide area network – Packet switching
Patent
1983-07-07
1985-11-19
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
3701102, H04J 302, H04J 312
Patent
active
045546584
ABSTRACT:
A system and method for use in a network of the type including a bus which carries a plurality of digital, multiple bit time divided channels of information including audio information provides for the decoding of digital audio within one of the channels to analog audio signals, the coding of analog audio to digital audio and the placing of the digital audio onto the bus within one of the channels, and the generation of internal or localized analog tones in an improved and efficient manner. A decoding means is provided for converting a digital multiple bit word to analog form. A control means which includes tone generating means adapted for providing digital multiple bit tone words controls a select means which selectively couples the decoding means to the bus to enable decoding of the digital audio or to the tone generating means for providing the analog tones in response to digital data received from the bus within a preselected channel. The decoding means if further capable of converting analog audio to digital audio to be placed upon the bus. The control means further is adapted to convey digital data to the bus within the preselected channel.
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Marten Russell A.
Townsend Greg M.
Jacobson James E.
Motorola Inc.
Olms Douglas W.
Roney Edward M.
Scutch III Frank M.
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