Programmable universal modem system and method for using the same

• US 5,367,563 A
• Filed: 07/26/1993
• Issued: 11/22/1994
• Est. Priority Date: 04/06/1992
• Status: Expired due to Term

• Current Assignee: Charles M. Leedom Jr, Eric J. Robinson, MLR, LLC
• Original Assignee: Spectrum Information Technologies Inc.
• Inventors: Sainton, Joseph B.
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): Woo, Stella L.
• Application Number:
  US08/096,895
• Time in Patent Office: 484 Days
• Field of Search: 379/59, 379/60, 379/58, 379/98, 379/97, 379/96, 379/94, 379/93, 375/8
• US Class Current: 379/93.29
• CPC Class Codes: H04L 9/40 Network security protocols
• 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 including a portable computer with a central processing unit and associated software, and a modem with an output jack carrying data transmit (TX), data receive (RX), tip, ring, and programmable digital input/output (DIO) lines sufficient to facilitate control of a large number of alternative telephone access devices. The operation and functions of the tip, ring, TX, RX and programmable DIO lines are controlled in a preferred embodiment by software in the modem under the control of the software in the computer. In a preferred embodiment, a user operates the software in the computer to specify a type or model of telephone access device being used with the modem, and the RX, TX, tip and ring lines are rendered either operable or inoperable, and a required subset of the programmable DIO lines are caused to operate in a manner necessary to achieve interactive control of an attached telephone access device.

Claims

1. A system for transferring data between a computing device and a remote device using a selected one of a plurality of telephone network access devices including at least one radiotelephone network access device, comprising:

modem means for connection to said computing device and further connectable by at least one of a receive line and transmit line interface and a tip and ring line interface to one of said telephone network access devices for transferring data between said computing device and a remote data transfer device over said connected telephone network access device, said modem means operating selectively to transfer digital data in one of at least two modes depending on the type of telephone network access device in use;

a first mode using said receive line and transmit line interface to transfer a signal representing digital data, and a second mode using said tip and ring interface to transfer an analog signal representing digital data, said modem means comprising;

modem controller means connected to said computer means for controlling the mode of operation of said modem means and for controlling call placement functions of said connected telephone network access devices in response to a software driver; and

memory means connected to said modem controller means for storing one or more of said software drivers, each including data specific to at least one particular telephone network access device for use by said modem controller means in selecting an appropriate one of said modes of operation of the modem and generating appropriate call placement control commands specific to said particular telephone network access device; and

a data communications program operating in the computing device and capable of accessing a plurality of said software drivers and thereafter selectively downloading one or more of said software drivers to said memory means for subsequent use in transferring data using an associated telephone network access device connected to said modem means.

2. The system of claim 1 wherein said memory means has the capacity to store a plurality of said software drivers.

3. The system of claim 2 wherein said memory means stores a software driver for a landline telephone connection and at least one software driver for a cellular radiotelephone connection.

4. The system of claim 1 wherein said memory means comprises flash reprogrammable memory.

5. The system of claim 1 further comprising jack means for connecting said tip and ring interface and said transmit line and receive line interface to said one of said telephone network access devices.

6. The system of claim 5 wherein said jack means comprises a standard telephone connector, and further comprising cable means extending at least between a first connector mating with said standard telephone connector and a second connector mating with a connection port of said telephone network access device.

7. The system of claim 6 wherein said cable means is a standard RJ-11 landline telephone cable.

8. The system of claim 7 wherein said standard RJ-11 landline telephone cable operably connects said tip-and-ring interface to said telephone network access device without operably connecting said transmit line and receive line interface to said telephone network access device.

9. The system of claim 6 wherein said first connector is an RJ-45 connector.

10. The system of claim 6 wherein one said cable means operably connects one or more of said control lines and said receive line and transmit line interface to a selected radiotelephone network access device without operably connecting said tip and ring interface to said radiotelephone network access device.

11. The system of claim 10 wherein said cable means comprises level setting means for setting the signal level transmitted by said transmit line and receive line interface.

12. The system of claim 11 wherein said level setting means comprises a resistor installed in said cable means.

13. The system of claim 6 wherein a plurality of said cable means are provided, each cable means specifically designed in conjunction with said software drivers to render said system operable with at least one of said telephone network access devices.

14. The system of claim 5 wherein said jack means comprises two connectors, a first connector for connecting to said tip and ring interface and a second connector for connecting to said receive line and transmit line interface.

15. The system of claim 14 wherein said first connector is an RJ-11 connector having six pins and said tip-and-ring interface uses the third and fourth pins of said RJ-11 connector.

16. The system of claim 1 wherein the receive and transmit interface operates at a specified audio level, said audio level variable under the control of said modem controller means according to the requirements of the telephone network access device in use.

17. The system of claim 16 wherein said software drivers include data defining the required audio level for the selected telephone network access device whereby said audio level is appropriately set.

18. The system of claim 1 wherein the modem controller means further comprises digital data ports operably connected to said receive line and said transmit line respectively, whereby said modem controller may selectively control and monitor the signal levels on said receive line and said transmit line.

19. The system of claim 18 wherein said modem controller means selectively operates to transfer data in digital form over said receive line and transmit line interface.

20. The system of claim 1 further comprising bifunctional means for selectively operating said receive line and transmit line interface in a first mode to transfer an analog signal representing modulated digital data and in a second mode to transfer a digital data signal in bipolar form, the selection between said modes determined by the type of telephone network access device in use.

21. The system of claim 1 wherein the modem controller means operates to transfer digital data in one of two modes:

a first mode wherein said receive line and transmit line interface transfers a signal representing digital data, and a second mode wherein said tip and ring interface transfers an analog signal representing digital data, the selection of said first or second mode determined by the type of telephone network access device in use.

22. The system of claim 21 wherein said software drivers define the mode of operation to be used with a particular telephone network access device.

23. The system of claim 1 wherein the modem controller means selectively operates the modem means in one of three data transfer modes:

a first mode wherein analog signals representing modulated digital data are transferred using said receive line and transmit line interface, a second mode wherein digital data signals in bipolar digital form are transferred using said receive line and transmit line interface, and a third mode in which said analog signals of the first mode representing modulated digital data are transferred using said tip and ring interface, wherein the selection between said modes is programmably determined depending on the type of telephone network access device in use.

24. The system of claim 1 wherein said memory comprises storage and upgrade means whereby said software drivers are retained for use in said modem means until replaced by the operation of said communications software in response to a user instruction.

25. An integrated computer and modem system for processing and transferring data using a selected one of a plurality of telephone network access devices including at least one radiotelephone network access device comprising:

computer means for processing data transferable over the telephone network access device, and having a data communications program;

modem means integrated with the computer means for transferring data between said computer means and a remote data transfer device over said telephone network access devices, said modem means comprising;

data pump means for transferring data between the modem means and the telephone network access device;

a data access arrangement operatively connected to said data pump means for providing a tip-and-ring interface for carrying signals between the modem means and said telephone network access device at least when said telephone network access device operates using a tip and ring interface;

receive and transmit data lines operatively connected to said data pump means to provide a receive line and transmit line interface for carrying data between the modem means and said telephone network access device at least when said telephone network access device operates using a receive line and transmit line interface;

control signal lines for carrying control signals for controlling and/or monitoring the operation of said radiotelephone network access device; and

jack means connected to said control signal lines, said data lines, and said data access arrangement for providing a dedicated external connection of said tip and ring interface, said receive line and transmit line interface, and said control signal lines as required to operably connect the modem means to said selected telephone network access device;

wherein the data communications program of said computer comprises software drivers for selectively controlling the operation of said modem means in conjunction with one of said plurality of telephone network access devices, said data communications program operating to vary the operation of said control signal lines in response to said selected software drivers to permit the control of call placement functions of different types of telephone network access devices by said modem means.

26. A method of connecting a computing device to one of a plurality of types of telephone systems for transfer of data, comprising the steps of:

installing a modem in the computing device, the modem having a plurality of digital telephone control lines with functions that vary under control of different software drivers corresponding to different types of digitally controlled telephone systems, including a jack facilitating connection of the modem to either a landline telephone system or a radiotelephone system, including selective connection of said digital telephone control lines;

providing a telephone terminal for the telephone system to be used;

connecting between the modem jack structure and the telephone terminal a cable establishing sufficient connections of said digital telephone control lines to the telephone terminal such that said computing device can control data transfer connections made in said communications network;

activating software in said computer to select an appropriate one of said software drivers for the telephone system and cable being used, the software operating to cause transmissions on said digital telephone control lines to perform a data transfer connection control function using the connected telephone terminal.

27. A portable computer system for transmitting data over one of at least two types of public communications networks, each selectively accessible through an associated communications network access device connectable to the system, comprising:

computer means for generating and receiving a computer data set to be transferred to a remote computing device over the communications network access device;

modem means connected to the computer means for interfacing said computer means to the communications network access device for transfer of said computer data set;

tip-and-ring interface means connected to the modem means and to an external connector of the portable computer system for transmitting and receiving said computer data set in a standard landline tip and ring telephone signal format;

receive-and-transmit interface means connected to the modem means and to an external connector of the portable computer system for transferring said computer data set in digital form on separate receive lines and transmit lines; and

control means for activating said tip and ring interface means at least when said data set is to be transferred using a standard landline telephone protocol and for activating said receive-and-transmit interface means at least when said data set is to be transferred using a digitized transmission radio communications network.

28. The portable computer system of claim 27, wherein said computer means is contained in a unitary housing and said modem means is installed within the housing.

29. The portable computer system of claim 28 wherein said tip-and-ring interface means and said receive-and-transmit interface means are connected to the same external connector of said portable computer system.

30. The portable computer system of claim 28 wherein said tip-and-ring interface means and said receive-and-transmit interface means are each connected to a different external connector of said portable computer system.

31. The portable computer system of claim 30 wherein said tip-and-ring interface means and said receive-and-transmit interface means are each connected to standard telephone connectors.

32. The portable computer system of claim 31 wherein said tip-and-ring interface means is connected to an RJ-11 connector and said receive-and-transmit interface means are connected to an RJ-45 connector.

33. The portable computer system of claim 27 further including digital telephone control means for generating communications network access device control signals, said digital telephone control means connected to an external connector of said portable computer system.

34. The portable computer system of claim 33 wherein said digital telephone control means includes a processing program fixed in a nonvolatile digital data recording medium which causes the digital telephone control means to generate signals at said external connector connected to said digital telephone control means to control the operation of at least one specific predetermined digitally controlled telephone network access device when said device is connected to said external connector through a cable having a predetermined configuration.

35. A portable computer modem for transferring a data set between a portable computer and a remotely located computing device over one of at least two types of public communications networks, each public communications network selectively accessible through an associated communications network access device connectable to the system, comprising:

computer connecting means for making a data transfer connection of the modem to the portable computer;

connector means for connecting the modem to said associated communications network access device and providing receive line and transmit line connections of the modem to said associated communications network access device;

modulation means connected to the computer connecting means t;

or selectively converting digital data signals, received from the portable computer and representing said data set, to analog signals, and for convening analog data set signals received from said communications network access device to digital data signals;

receive-and-transmit interface means connected to the modulation means and to said external connector means for transmitting and receiving said analog signals on said receive and transmit lines;

digital interface control means operably connected to said computer connecting means and further connected to said receive and transmit lines for selectively transferring digital data set signals in unmodulated form between said portable computer and said remotely located computing device through said communications network access device.

36. A portable computer modem for transferring data between a portable computer and one of at least two types of public communications networks, each public communications network selectively accessible through an associated communications network access device connectable to the modem, comprising:

computer connecting means for making a data transfer connection of the modem to the portable computer;

external connector means for connecting the modem to said associated communications network access device and providing separate receive line and transmit line connections of the modem to said associated communications network access device;

modulation means connected to the computer connecting means for selectively convening digital data signals received from the portable computer to analog signals, and for convening analog signals received from said communications network access device to digital data signals;

receive-and-transmit interface means connected to the modulation means and to said external connector means for transmitting and receiving said analog signals on said separate receive lines and transmit lines;

control means connected to said modulation means and said computer connecting means for controlling the operation of the modulation means through said receive-and-transmit interface means; and

level control means connected to said control means and said receive line for selectively driving said receive line with a DC voltage under the control of said control means.

37. The modem of claim 36 wherein said level control means is connected to said transmit line and further operates to drive said transmit line with a DC voltage level under the control of said control means.

38. A portable computer modem for transferring a data set between a portable computer and a remotely located computing device through one of at least two types of public communications networks, each public communications network selectively accessible through an associated communications network access device connectable to the modem, comprising:

computer connecting means for making a data transfer connection of the modem to the portable computer;

external connector means external to a housing containing at least the modem for connecting the modem to said associated communications network access device and providing separate receive line and transmit line connections of the modem to said associated communications network access device;

modulation means connected to the computer connecting means for selectively converting digital data signals representing the data set and received from the portable computer to analog signals, and for converting analog signals received from said communications network access device to digital data signals representing a received data set;

receive-and-transmit interface means connected to the modulation means and to said external connector means for transmitting and receiving said analog signals representing the data set on said separate receive lines and transmit lines;

control means connected to said modulation means and said computer connecting means for controlling the operation of the modulation means to transmit the data set through said receive-and-transmit interface means; and

level sensing means connected to said control means and said receive line for selectively sensing the voltage level of said receive line under the control of said control means.

39. The modem of claim 38 wherein said level sensing means is connected to said transmit line and further operates to selectively sense the voltage level of said transmit line under the control of said control means.

40. A portable computer modem for transferring a data set between a portable computer and a remotely located computing device through one of at least two types of public communications networks, each public communications network selectively accessible through an associated communications network access device connectable to the modem, comprising:

computer connecting means for making a data transfer connection of the modem to the portable computer;

external connector means external to a housing containing at least the modem for connecting the modem to said associated communications network access devices and providing separate receive line and transmit line connections and tip-and-ring connections of the modem to at least one said associated communications network access device;

modulation means connected to the computer connecting means for selectively converting digital data signals representing the data set and received from the portable computer to analog signals, and for converting analog signals received from said communications network access device to digital data signals;

receive-and-transmit interface means connected to the modulation means and to said external connector means for transmitting and receiving said analog signals representing said data set on said separate receive lines and transmit lines;

tip-and-ring interface means connected to the modulation means and to said external connector means for convening said analog data set signals to a standard landline tip and ring telephone signal format for transmission and for convening received tip and ring telephone signals to said analog signals.

41. The modem of claim 40 wherein said external connection means comprises a single external connector connected to said tip-and-ring interface means and said receive-and-transmit interface means.

42. The modem of claim 40 wherein said external connection means comprises two external connectors, a first connector connected to said tip-and-ting interface means and a second connector connected to said receive-and-transmit interface means.

43. The modem of claim 42 wherein said first and second connectors are standard telephone connectors.

44. The modem of claim 43 wherein said first connector is an RJ-11 connector and said second connector is an RJ-45 connector.

45. The modem of claim 40 further including digital telephone control means for generating communications network access device control signals, said digital telephone control means connected to said external connector means of said modem.

46. The modem of claim 45 wherein said digital telephone control means includes a processing program fixed in a nonvolatile digital data recording medium which causes the digital telephone control means to generate signals at said external connector means connected to said digital telephone control means to control the operation of at least one specific predetermined digitally controlled telephone network access device when said device is connected to said external connector through a cable having a predetermined configuration.

47. The modem of claim 46 wherein said digitally controlled telephone network access device is a cellular radiotelephone.

48. A portable computer system adapted for transferring data over a radio communications network when directly connected to a specific radio network access device having a specific external connector for allowing external control of the radio network access device, comprising:

a transportable computer housing;

computer means mounted within said computer housing for processing data transferrable over a radio network access device;

modem means operably connected to the computer means and mounted substantially within said transportable computer housing for transferring data between said computer means and a remote data transfer device over a radio network access device, said modem means comprising,

data pump means for transferring data between the modem means and a radio network access device;

receive and transmit data lines operatively connected to said data pump means to provide a receive and transmit line interface for carrying data between the modem means and a radio network access device;

control signal lines programmable to carry control signals for controlling and/or monitoring the operation of different types of radio network access devices; and

program controllable modem controller means connected to said computer means, said control signal lines, and said data pump means for controlling the operation of said modem means in response to a modem control program to permit the control of a call placement function of a specific type of radio network access device by said modem;

jack means mounted on said transportable computer housing and connected to said control lines and said receive and transmit data lines, for providing an external connection of said receive and transmit line interface to connect said modem means with a plurality of types of radio network access devices;

matched program and cable means corresponding to a specific radio network access device for connecting and controlling the computer system to transfer data over a radio communications network upon connection with said specific radio network access device, said matched program and cable means including

a device specific multi-line cable means for interconnecting at one end with said jack means and connectable at the other end with a device specific external connection of said specific radio network access device to interconnect said receive and transmit data lines and said control lines with said specific external connector of the radio network access device; and

program means for programming said modem controller means to cause said control lines to function in a manner suitable only for the specific radio network access device with which said cable means is adapted to be connected.

49. A kit for programming and connecting a computer connected, programmable modem to one of a plurality of different types of cellular telephones having different control protocols, respectively, for controlling phone functions and having different external electrical connectors, respectively, to receive external control signals formatted in accordance with the control protocols for controlling cellular phone operation to allow data to be transferred and received by the computer over a cellular network, comprising

a cellular telephone cable means for interconnecting a specific one of the cellular telephones to the modem, said cellular telephone cable means including a conductive cable having a modem connector at one end for connection with the modem and a cellular telephone connector at the other end for connection with the specific external electrical connector of one of the plurality of cellular telephones, and

a non-volatile digital data recording medium containing a software driver adapted to be loaded into the programmable modem for causing the modem to produce control signals in accordance with a control protocol of said specific cellular telephone using said conductive cable.

50. A method of upgrading a programmable interface device which drives a radio network interface device for transfer of a data set between the programmable interface device and a remotely located computing device over a radio network, so that the programmable interface device will drive a specific new radio network interface device, comprising the steps of:

providing a programmable interface device with a memory for storing one or more software drivers and a common connection means for transferring data signals between the programmable universal interface device and said radio communications network interface devices;

providing a driver kit including a cable for connecting the common connection means to at least one specific radio communications network interface device through one or more line connections and a software driver containing information for controlling the operation of the specific radio communications network interface device, said software driver information including information assigning particular control signal transmissions to particular said one or more line connections established by the cable;

installing the cable from the driver kit between the programmable interface device and the radio communications network interface device to establish at least one data transmission line connection between the programmable interface device and the radio communications network interface device;

installing the software driver from the software driver kit in a storage memory of the programmable interface device;

activating the programmable interface device to select said software driver to control operation of said specific radio communications network interface device by generating control signal transmissions and selectively routing said signals to line connections established by the cable to control said radio communications network interface device for establishing data transfer connections in said radio communications network to define the identity of the remotely located computing device.

51. The method of claim 50 wherein the programmable interface device comprises a portable computing device.

52. The method of claim 51 wherein the common connection means comprises an external jack on the portable computing device.

53. The method of claim 52 wherein the external jack comprises a serial digital data port.

54. The method of claim 51 wherein the programmable interface device comprises a data modem.

55. The method of claim 54 wherein the data modem comprises a microprocessor connected to control a plurality of data transfer interfaces operable with different and further connected to control a plurality of programmable control lines connected to said network interface device by said cable.

56. The method of claim 50 wherein the programmable interface device comprises a microprocessor connected to control a plurality of data transfer interfaces having different configurations and operable with different radio communications networks.

57. The method of claim 56 wherein the microprocessor further controls a plurality of programmable control lines connected to said radio communications network interface device by said cable.

58. The method of claim 56 wherein said data transfer interfaces include at least an analog modulated RX-TX interface and a digital RX-TX interface.

59. The method of claim 50 wherein the programmable interface device comprises a microprocessor that formats the data set for transmission.

60. The method of claim 59 wherein the microprocessor formats the data set into data blocks for transmission.

61. A system for transferring data between a computing device and a remote device using a selected one of a plurality of communications network access devices including at least one radio communications network access device, comprising:

a data transmission and formatting circuit connected to said computing device and further connectable by at least one of a receive line and transmit line interface and a tip and ring line interface to one of said communications network access devices for transferring data between said computing device and a remote data transfer device over said connected communications network access device, said data transmission and formatting circuit operating selectively to transfer digital data between the computing device and the remote data transfer device in one of at least two modes depending on the type of communications network access device in use;

a first mode using said receive line and transmit line interface to transfer a signal representing digital data, and a second mode using said tip and ring interface to transfer an analog signal representing digital data, said data transmission and formatting circuit comprising;

controller means connected to said computer means for controlling the mode of operation of said data transmission and formatting circuit and for controlling destination addressing functions of said connected communications network access devices in response to a software driver; and

memory means connected to said controller means for storing one or more of said software drivers, each including data specific to at least one particular communications network access device for use by said controller means in selecting an appropriate one of said modes of operation of the data transmission and formatting circuit and generating appropriate destination addressing control commands specific to said particular communications network access device for establishing transmission between said computing device and said remote data transfer device; and

a data communications program operating in the computing device for accessing one of a plurality of said software drivers and thereafter selectively downloading one or more of said software drivers to said memory means for subsequent use in transferring data using an associated communications network access device connected to said data transmission and formatting circuit.

62. A kit for upgrading a programmable interface device which drives a radio network interface device for transfer of a data set between the programmable interface device and a remotely located computing device over a radio network, so that the programmable interface device will drive a specific new radio network interface device, comprising:

providing a programmable interface device with a memory for storing one or more software drivers and a common connection means for transferring data signals between the programmable universal interface device and said radio communications network interface devices;

a cable connecting a common connection means of the programmable interface device which transfers data signals between the programmable interface device and said radio communications network interface device to at least one specific radio communications network interface device through one or more line connections; and

a software driver containing information for controlling the operation of the specific radio communications network interface device, said software driver information including instructions for generating control signal transmissions for establishing data transfer connections in said radio communications network to define the identity of the remotely located computing device, and further including instructions for selectively routing particular control signal transmissions to particular line connections established by the cable, said software driver installable in a storage memory of the programmable interface device.

63. The kit of claim 62 wherein the programmable interface device comprises a data modem and the software driver comprises programming information loaded into a storage memory of the data modem to control the operation of the data modern.

64. A portable computer modem system for transferring a data set between a portable computer and a remotely located computing device through one of at least two types of radio communications networks, each radio communications network selectively accessible through an associated radio network access device connectable to the modem, comprising:

computer connecting means for making a data transfer connection of the modem to the portable computer;

external connector means external to a housing containing at least the modem for connecting the modem to said associated radio network access device and providing separate receive line and transmit line connections of the modem to said associated radio network access device;

modulation means connected to the computer connecting means for selectively converting digital data signals representing the data set and obtained from the portable computer to analog signals, and selectively convening analog signals received from said radio network access device to digital data signals representing a received data set;

receive-and-transmit interface means connected to the modulation means and to said external connector means for transmitting and receiving signals representing the data set on said separate receive lines and transmit lines; and

control means connected to said modulation means and said receive and transmit interface means for selectively controlling the modulation means and the receive and transmit interface means to transfer the data set between the computing device and the remote data transfer device in one of at least two modes, the selected mode depending on the type of radio network access device in use;

a first mode in which said control means digitally formats said data set according to a transmission protocol and digitally transmits the formatted data set to the radio network access device over the receive and transmit interface, and a second mode in which said control means digitally formats said data set according to a transmission protocol, and activates said modulation means to modulate said formatted data set and transmit a modulated formatted analog data signal representing the formatted data set to the receive and transmit interface and thus to the radio network access device and the remote computing device.

65. The modem system of claim 64 wherein the same said receive lines and transmit lines are used in both said first and second operating modes.

66. The modem system of claim 64 wherein the transmission protocol in the second mode comprises separating the data set into packets and adding error detection formatting to the packets.