Method and apparatus for communicating data over a radio transceiver with a modem

Claim 2

An interface between a modem capable of sending and detecting audio frequency tone bursts and a radio transceiver for communication of computer data and control of said radio transceiver, comprising: circuitry for transferring the computer data between said modem and said radio transceiver, said computer data being in the form of modulated audio signals produced by said modem and by a remote modem; circuitry, coupled to said transferring circuitry, for converting audio-frequency tone bursts sent by said modem into corresponding sequences of binary high and low logic states for controlling the radio transceiver; and circuitry, coupled to said transferring circuitry, for converting binary high and low logic states representing status information sent by the radio transceiver into corresponding audio frequency tone bursts which are detectable by the modem.

Claim 3

The interface of claim 1 wherein said circuitry for converting said high and low logic states comprises: circuitry for integrating the audio-frequency tone bursts; and circuitry, coupled to said integrating circuitry, for comparing the integrated audio-frequency tone bursts to a signal of predetermined value to determine high and low logic levels represented by integrated audio-frequency signal.

Claim 4

The interface of claim 1 wherein said circuitry for transferring computer data comprises circuitry for transferring computer data to and from said modem over a single pair of wires.

Claim 5

The interface of claim 1 wherein said circuitry for transferring computer data comprises circuitry for transferring computer data to and from said modem using separate lines for data transferred from the radio transceiver to the modem and for data transferred from the modem to the radio transceiver.

Claim 6

The interface of claim 1 and further comprising control circuitry for assembling said sequences of binary high and low logic states from the converting circuitry/into a binary control word.

Claim 7

The interface of claim 5 wherein said control circuitry detects the presence of predetermined values of said binary control word and sets state information responsive thereto.

Claim 8

The interface of claim 6 wherein said control circuitry further selectively transfers the binary control word to the radio transceiver responsive to said state information.

Claim 9

The interface of claim wherein said control circuitry selectively transfers the status information from the radio transceiver to the modem responsive to said state information.

Claim 10

The interface of claim 1 wherein said circuitry for converting audio-frequency tone bursts comprises circuitry for converting continuous wave keying of audio-frequency alternating current signals to binary high and low logic states.

Claim 11

The interface of claim 1 wherein said circuitry for converting audio-frequency tone bursts comprises circuitry for converting frequency-shift-keying of audio-frequency alternating current signals to binary high and low logic states.

Claim 12

The interface of claim 1 wherein said circuitry for converting audio-frequency tone bursts comprises circuitry for converting discrete tone frequencies representing individual control words into binary high and low logic states.

Claim 13

The interface of claim 1 wherein said circuitry for converting audio-frequency tone bursts comprises circuitry for converting dual tone multi-frequency signals representing individual control words into binary high and low logic states.

Claim 14

The interface of claim 1 wherein said circuitry for converting binary high and low logic states comprises circuitry for converting binary high and low logic states to continuous wave keying of audio-frequency alternating current signals.

Claim 15

The interface of claim 1 wherein said circuitry for converting binary high and low logic states comprises circuitry for converting binary high and low logic states to frequency-shift-keying of audio-frequency alternating current signals.

Claim 16

The interface of claim 1 wherein said circuitry for converting binary high and low logic states comprises circuitry for converting binary high and low logic states to discrete tone frequencies representing individual status words.

Claim 17

The interface of claim 1 wherein said circuitry for converting binary high and low logic states comprises circuitry for converting binary high and low logic states to dual tone multi-frequency signals representing individual status words.

Claim 20

The system of claim 17 wherein said interface further comprises: circuitry for integrating the audio-frequency tone bursts; and circuitry, coupled to said integrating circuitry, for separating computer data signals from control signals and outputting said control signals to said radio transceiver.

Claim 21

The system of claim 18 wherein said interface further comprises circuitry for combining said audio-frequency status signals with said computer data signals.

Claim 22

The system of claim 17 wherein said interface communicates with said modem using separate lines for signals sent to the modem and signals received from the modem.

Claim 23

The system of claim 17 wherein said modem has a port including a pair of wires for connection to the Public Switched Telephone Network.

Claim 24

The system of claim 21 wherein said interface is coupled to said port for connection to the Public Switched Telephone Network.

Claim 25

The system of claim 22 wherein said pair of wires for coupling the modem to the interface is coupled to said pair of wires for connection of the modem to the Public Switched Telephone System.

Claim 26

The system of claim 21 wherein said interface is coupled to a second port not used for connection to the Public Switched Telephone Network.

Claim 27

The system of claim 17 wherein said circuitry for converting audio frequency tone bursts comprises circuitry for converting continuous wave keying of audio frequency signals to binary high and low signal states.

Claim 28

The system of claim 17 wherein said circuitry for converting audio frequency tone bursts comprises circuitry for converting frequency-shift-keying of audio frequency signals to binary high and low signal states.

Claim 29

The system of claim 17 wherein said circuitry for converting audio frequency tone bursts comprises circuitry for converting discrete frequencies of audio frequency signals to binary high and low signal states.

Claim 30

The system of claim 17 wherein said circuitry for converting audio frequency tone bursts comprises circuitry for converting dual tone multi-frequency signals to binary high and low signal states.

Claim 33

The method of claim 29 wherein said step of translating the audio-frequency tone bursts comprises the step of integrating a signal transmitted by the modem and comparing the integrated signal to a predetermined signal.

Claim 34

The method of claim 29 and further comprising the step of separating signals output by the modem from signals being sent to the modem.

Claim 35

The method of claim 29 and further comprising the step of accumulating the corresponding high and low logic states to form control words.

Claim 36

The method of claim 32 and further comprising the step of detecting predetermined control words and setting state information responsive to a detection of said predetermined control words.

Claim 37

An interface between a modem capable of sending and detecting audio frequency tone bursts and a radio transceiver for communication of computer data, comprising: circuitry for transferring the computer data to and from said modem over a single bus for communicating audio frequency signals; circuitry, coupled to said transferring circuitry, for converting audio-frequency tone bursts representing control information received from the modem on said single bus, each tone burst corresponding to a logical high or low state, into binary into logical high or low logic signals; circuitry, coupled to said transferring circuitry, for converting binary status signals from the radio transceiver into corresponding audio-frequency tone bursts detectable by the modem; and circuitry for transferring said corresponding audio-frequency tone bursts to said modem over said single bus.

Claim 38

An interface between a modem capable of sending and detecting audio frequency tone bursts and a radio transceiver for communication of computer data, comprising: circuitry for transferring the computer data to and from said modem over a single bus for communicating audio frequency signals; circuitry, coupled to said transferring circuitry, for converting audio-frequency tone bursts representing control information received from the modem on said single bus, each tone burst corresponding to a logical high or low state, into binary into logical high or low logic signals; circuitry, coupled to said transferring circuitry, for converting binary status signals from the radio transceiver into corresponding audio-frequency tone bursts detectable by the modem; and circuitry for transferring said corresponding audio-frequency tone bursts to said modem over said single bus.