1
Harry M O Sullivan: Portable hybrid communication system and methods. Spectrum Information Technologies, Sixbey Friedman Leedom & Ferguson, November 20, 1990: US04972457 (408 worldwide citation)

A laptop device includes a personal computer, a cellular transceiver, a speakerphone, and a hybrid communications control unit. The device has connectors for attaching a headset, cellular control unit, land telephone line, and additional speakers and microphones. The microprocessor-controlled hybrid ...


2
Harry M O Sullivan: System and method for interfacing computers to diverse telephone networks. Spectrum Information Technologies, Sixbey Friedman Leedom & Ferguson, June 30, 1992: US05127041 (236 worldwide citation)

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, ...


3
Joseph B Sainton: Programmable universal interface system. Spectrum Information Technologies, Sixbey Friedman Leedom & Ferguson, September 28, 1993: US05249218 (196 worldwide citation)

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 alternativ ...


4
Harry M O Sullivan: Interface for connecting computers to radio telephone networks. Spectrum Information Technologies, Sixbey Friedman Leedom & Ferguson, October 4, 1994: US05353334 (142 worldwide citation)

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, ...


5
Joseph B Sainton: Programmable universal modem system and method for using the same. Spectrum Information Technologies, Sixbey Friedman Leedom & Ferguson, November 22, 1994: US05367563 (117 worldwide citation)

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 alternativ ...


6
Joseph B Sainton, Charles M Leedom Jr, Eric J Robinson: Adaptive omni-modal radio apparatus and methods. Spectrum Information Technologies, Charles M Leedom Jr, Sixbey Friedman Leedom & Ferguson, December 29, 1998: US05854985 (112 worldwide citation)

A frequency and protocol agile wireless communication product, and chipset for forming the same, including a frequency agile transceiver, a digital interface circuit for interconnecting the radio transceiver with external devices, protocol agile operating circuit for operating the radio transceiver ...


7
Joseph B Sainton: Apparatus and methods for networking omni-modal radio devices. Spectrum Information Technologies, Charles M Leedom Jr, Evan R Smith, Sixbey Friedman Leedom & Ferguson, June 2, 1998: US05761621 (111 worldwide citation)

A network and method of operating a network of wireless service providers adapted to interact with a plurality of omni-modal wireless products within a given geographic area in a manner to permit the wireless service providers to "borrow" radio frequencies from other wireless service providers withi ...


8
Harry M O Sullivan: Methods and apparatus for controlling data transmission using radio devices. Spectrum Information Technologies, Charles M Leedom Jr, Evan R Smith, Sixbey Friedman Leedom & Ferguson PC, June 17, 1997: US05640444 (83 worldwide citation)

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, ...


9
Harry M O&apos Sullivan: Cellular telephone data communication system and method. Spectrum Information Technologies, Charles M Leedom Jr, Evan R Smith, Sixbey Friedman Leedom & Ferguson P C, April 17, 2001: USRE037141

The cellular telephone data communication system and method involves the use of a mobile data processing interface and a cooperating static data processing interface to effectively transmit data over a cellular telephone system. Each data processing interface includes a processor which operates in t ...


10
Harry M O Sullivan: Cellular telephone data communication system and method. Spectrum Information Technologies, Sixbey Friedman Leedom & Ferguson, August 18, 1992: USRE034034

The cellular telephone data communication system and method involves the use of a mobile data processing interface and a cooperating static data processing interface to effectively transmit data over a cellular telephone system. Each data processing interface includes a processor which operates in t ...