System for producing encoded and decoded voice, internal audio tones, and data communication within a time division multiplex network
First Claim
1. A remote site interface apparatus for use in a network of the type including a time-division multiplex (TDM) bus for carrying a plurality of digital audio signals and digital control packets assigned to an identifiable time slot, said apparatus providing encoding and decoding of the TDM digital audio signals and control data packets, and for generating control tone signals, said apparatus comprising:
- decoding means for converting a TDM digital audio to an analog signal;
control means including tone generating means adapted for providing a digitized tone signal and;
select means responsive to said control means for selectively coupling said decoding means to said bus or to said tone generating means;
whereby,when said select means couples said decoding means to said bus, said apparatus outputs said analog audio signal, and when said select means couples said decoding means to said tone generating means, said apparatus outputs an analog tone signal.
1 Assignment
0 Petitions
Accused Products
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.
33 Citations
29 Claims
-
1. A remote site interface apparatus for use in a network of the type including a time-division multiplex (TDM) bus for carrying a plurality of digital audio signals and digital control packets assigned to an identifiable time slot, said apparatus providing encoding and decoding of the TDM digital audio signals and control data packets, and for generating control tone signals, said apparatus comprising:
-
decoding means for converting a TDM digital audio to an analog signal; control means including tone generating means adapted for providing a digitized tone signal and; select means responsive to said control means for selectively coupling said decoding means to said bus or to said tone generating means;
whereby,when said select means couples said decoding means to said bus, said apparatus outputs said analog audio signal, and when said select means couples said decoding means to said tone generating means, said apparatus outputs an analog tone signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A method of converting a digital multiple bit audio word corresponding to audio information carried on a bus to an analog audio signal and generating internal localized tone analog signals comprising the steps of:
-
providing a decoder capable of converting a digital multiple bit word to an analog signal; locally generating at least one digital multiple bit tone word; and selectively conveying said digital multiple bit audio word on said bus or said locally generated digital multiple bit tone word to said decoder. - View Dependent Claims (23, 24, 25, 26, 27, 28)
-
-
29. A TDM bus interface apparatus for use with a remote receiver/transmitter in a communication system having at least one console operator position and a plurality of remote sites coupled with a time-division multiplex (TDM) bus which routes digital audio and control data packets, said remote site interface comprising:
-
decoder means for converting a TDM digital audio signal or a digitized tone signal to an analog output signal; encoder means for generating a digital audio signal from received analog audio; control means coupled to said bus for receiving and decoding control data packets, said control means including tone generating means including tone generating means for generating a local digitized tone signal and data generating means for generating data signals, said control means further including time-slot assigner means for indicating that a specific TDM digital audio signal is available on the TDM bus or that a particular TDM slot is available for placing digital audio on the bus; and select means coupled to said control means and arranged for selectively coupling said deconding means to said bus or to said tone generating means responsive to said control means; said control means causing said select means to couple said decoding means to said bus or said tone generator means and output said analog audio signal, or enabling said encoder means for placing data onto said bus within a predetermined data channel.
-
Specification