System for producing encoded and decoded voice, internal audio tones, and data communication within a time division multiplex network
July 7, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3816666 3889063 3924077 Simplex intercommunication system and a two-way intercommunication system having an electronic trunking scheme Digital bus communications system Digital signalling receiver for receiving PCM tones Ice dispensing machine having an agitator and a fixed deflector Process communication link Half duplex integral vocoder modem system Integrated speech synthesis circuit with internal and external excitation capabilities InventorsAssigneeApplicationNo. 06/511682 filed on 07/07/1983US Classes:370/463, Details of circuit or interface for connecting user to the network370/458Using time slotsExaminersPrimary: Olms, Douglas W.Assistant: Scutch, III, Frank M. Attorney, Agent or FirmInternational ClassesH04H 1/00 (20060101)H04M 3/60 (20060101) AbstractA 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. | |
