Methods and apparatus for controlling data transmission using radio devices

• US 5,640,444 A
• Filed: 10/03/1994
• Issued: 06/17/1997
• Est. Priority Date: 06/01/1990
• Status: Expired due to Term

• Current Assignee: Charles M. Leedom Jr, Eric J. Robinson, MLR, LLC
• Original Assignee: Spectrum Information Technologies Inc.
• Inventors: O'Sullivan, Harry M.
• Primary Examiner(s): Bost, Dwayne D.
• Application Number:
  US08/316,724
• Time in Patent Office: 988 Days
• Field of Search: 379/58-60, 379/63, 379/93, 379/96, 379/97, 379/98, 379/99, 379/100, 379/281, 379/339, 379/353, 379/443, 379/444, 455/33.1, 455/88
• US Class Current: 455/552.1
• CPC Class Codes: H01R 2201/16 for telephony
• CPC Class Codes: H04M 11/06 Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A system for connecting a computer to both cellular and landline telephone systems is disclosed. A cellular modem has a single RJ-11 jack for interfacing either to a landline jack or to a signal processing cable connected to a cellular transceiver. The analog data transmission signals of the modem, which are compatible with landline "tip" and "ring" lines, are provided on the third and fourth pins of the RJ-11 connector. When the modem is to be used as a landline modem, the RJ-11 connector is connected directly to a standard landline telephone jack using an ordinary modular telephone wire. When used with a cellular transceiver, the modem generates transceiver operation commands according to a predefined generic command language which is not specific to a particular transceiver. The generic commands are transmitted in serial digital form on the fifth terminal of the RJ-11 connector. The signal processing cable acknowledges the commands received via a serial digital signal transmitted to the second terminal of the RJ-11 connector. The signal processing cable then transmits control signals to the transceiver, with the signals being appropriate to the type of cellular transceiver used, to produce the function requested by the modem'"'"'s universal command.

Claims

1. A method for interfacing a computing device to one of a plurality of connectable access devices of one of two or more types of telephone networks, including a first network responding to analog dialing signals and a second network having digital dialing signals, comprising the steps of:

(a) providing first and second signal paths at an interface connector of the computing device;

(b) connecting said interface connector of the computing device to an interface connector of the access device;

(c) determining whether the network accessable through said access device responds to analog or digital dialing signals;

(d) if the network responds to analog dialing signals, transmitting analog dialing signals and data signals on the first signal path;

(e) if the network responds to digital dialing signals, transmitting digital dialing signals on the second signal path.

2. The method of claim 1 wherein in step (a) the interface connector is provided in a modem associated with the computing device.

3. The method of claim 1 wherein the analog dialing signals transmitted in step (d) are DTMF tones.

4. The method of claim 3 wherein the first signal path comprises a tip-and-ring interface.

5. The method of claim 1 wherein the first network is a landline telephone network and the second network is a radio communications network.

6. The method of claim 5 wherein the second network is an AMPS standard cellular radiotelephone network.

7. The method of claim 1 wherein the first and second signal paths are provided in the same interface connector.

8. The method of claim 7 wherein the interface connector carrying the first and second signal paths is a standard landline telephone connector.

9. A method for connecting a portable personal data processing device to one of a plurality of access devices for a radio communications network to achieve transfer of data with a remote station, comprising the steps of:

providing the data processing device with an interface circuit for transferring information between the access device and the portable personal data processing device;

storing in the interface circuit at least one of a plurality of possible program data sets defining digital control signals for at least one type of radio communications network access device, according to a standard protocol of such access device, and defining predetermined line connections over which said signals are to be transmitted;

connecting the interface circuit to a specified one of said access devices using a cable that establishes said predetermined line connections to the access device defined by the program data set;

transmitting digital operational commands from the portable personal data processing device and receiving by the interface circuit;

using the interface circuit, automatically retrieving a program data set compatible with the access device connected to said cable means, generating addressing signals to initiate data transfer with the remote station using said access device and said radio communications network, and transferring data between the data processing device and the remote station.

10. The method of claim 9 wherein said communication network is a cellular radiotelephone network, and said access device is a cellular radiotelephone.

11. The method of claim 9 wherein the interface circuit includes a circuit for receiving a user input specifying a type of radio access device to be used, and the step of automatically retrieving a program data set is performed to retrieve a program data set relating to the particular radio access device specified by said user input.

12. The method of claim 9 wherein the interface circuit includes a modem circuit for modulating and demodulating data transferred between said portable personal data processing device and the remote station.

13. The method of claim 9 wherein said interface circuit comprises a standardized connector mating with a corresponding connector in the portable personal data processing device to operably connect the interface circuit for data transfer with the portable personal data processing device.

14. The method of claim 13 wherein said standardized connector is a card slot connector.

15. The method of claim 14 wherein said standardized card slot connector provides a standardized computer bus interface to the data processing device.

16. The method of claim 9 where said portable personal data processing device is a personal computing device.

17. The method of claim 9 where the interface circuit has at least one separable connector which receives one of a plurality of said cables, each said cable associated with a specific type of access device and having a plurality of lines extending between a connector compatible with said separable connector and a connector compatible with said specific type of access device.

18. The method of claim 17 wherein a program data set is associated with each said cable so that the interface circuit transmits information to initiate a radio transmission, according to a standard protocol of the access device in conjunction with said predetermined line connections established by said cable.

19. The method of claim 18 wherein a plurality of said program data sets are simultaneously available in said interface circuit.

20. The method of claim 9 wherein said line connections include at least one data line for transmitting and receiving data and at least one control signal line separate from the data line for controlling addressing and operation of the access device.

21. The method of claim 20 wherein the transmissions of said control signal lines vary according to the program data set retrieved by the interface circuit.

22. The method of claim 21 wherein said line connections include a receive data line and a transmit data line forming a receive and transmit interface with the access device.

23. A method for connecting a portable personal data processing device to an access device for a radio communications network to achieve data transfer with a remote station, comprising the steps of:

providing an interface circuit comprising an access-device-specific operating combination, including (1) a cable for establishing predetermined line connections to a specified one of said access devices in said radio communications network to control address specification and data transmission functions of the access device, the cable having a connector compatible with a connector of the access device, and (2) a program data set defining digital control signals for the access device in conjunction with said predetermined line connections;

connecting the portable personal data processing device to the access device for the radio communications network using the interface circuit so that the interface circuit processes and transmits information between the portable personal data processing device and the radio communications network;

transmitting a digital command from the portable personal data processing device and receiving by the interface circuit which causes the interface circuit to retrieve the program data set and generate addressing signals to initiate data transfer with the remote station using said access device and said radio communications network.

24. The method of claim 23 wherein said radio communications network is a cellular radiotelephone network, and said access device is a cellular radiotelephone.

25. The method of claim 23 wherein the interface circuit includes a circuit for receiving a user input specifying a type of radio access device to be used, and the step of retrieving a program data set is performed automatically to retrieve a program data set relating to the particular radio access device specified by said user input.

26. The method of claim 23 wherein the interface circuit includes a modem circuit for modulating and demodulating data transferred between said portable personal data processing device and the remote station.

27. The method of claim 23 wherein said interface circuit comprises a standardized connector mating with a corresponding connector in the portable personal data processing device to operably connect the interface circuit for data transfer with the portable personal data processing device.

28. The method of claim 27 wherein said standardized connector is a card slot connector.

29. The method of claim 28 wherein said standardized card slot connector provides a standardized computer bus interface to the data processing device.

30. The method of claim 23 where said portable personal data processing device is a personal computing device.

31. The method of claim 23 where the interface circuit has at least one separable connector which receives one of a plurality of said cables, each said cable associated with a specific type of access device and having a plurality of lines extending between a connector compatible with said separable connector and a connector compatible with said specific type of access device.

32. The method of claim 31 wherein a program data set is associated with each said cable so that the interface circuit transmits information to initiate a radio transmission, according to a standard protocol of the access device in conjunction with said predetermined line connections established by said cable.

33. The method of claim 32 wherein a plurality of said program data sets are simultaneously available in said interface circuit.

34. The method of claim 23 wherein said line connections include at least one data line for transmitting and receiving data and at least one control signal line separate from the data line for controlling addressing and operation of the access device.

35. The method of claim 34 wherein the transmissions of said control signal lines vary according to the program data set retrieved by the interface circuit.

36. A method of connecting a portable personal data processing device to one of a plurality of public communications networks, including at least one public radio network, to achieve transfer of data with a remote station, comprising the steps of:

providing a portable public communications network interface circuit which provides connections to a plurality of public communications networks, the network interface including a radio transceiving device which selectively transmits and receives data on a plurality of radio channels using one of a plurality of standardized operating protocols;

storing in the interface circuit a plurality of possible program data sets, each data set defining a different operating protocol for establishing data transfer communications with one of the plurality of public communications networks according to a standard communications protocol of that network;

connecting the interface circuit to the portable personal data processing device;

transmitting operational commands from the portable personal data processing device to the interface circuit specifying which one of the public communications networks should be used for data transmission;

using the interface circuit, automatically retrieving a program data set compatible with the selected public communications network, activating the protocol corresponding to the selected network, and generating addressing signals to initiate data transfer with the remote station using the selected public communications network and protocol, and transferring data between the data processing device and the remote station.

37. The method of claim 36 wherein, in the step of transmitting operational commands from the portable personal data processing device to the interface circuit, the operational commands are generated according to a standardized command language.