1
Dan A Preston, Joseph D Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor, Philip R Smith: Multichannel in-band signaling for data communications over digital wireless telecommunications networks. Airbiquity, Stoel Rives, December 10, 2002: US06493338 (166 worldwide citation)

An inband signaling modem communicates digital data over a voice channel of a wireless telecommunications network. An input receives digital data. An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech. The digital data is also encoded to prev ...


2
Dan A Preston, Joseph D Preston, James Vroman: System and method to communicate time stamped, 3-axis geo-position data within telecommunication networks. Integrated Data Communications, Stoel Rives, November 7, 2000: US06144336 (163 worldwide citation)

In the case of a conventional radio telecommunication system for transmitting information between stationary transmitting/receiving units and mobile transmitting/receiving units it is proposed that the mobile units be additionally provided with a satellite navigation receiver for independently deter ...


3
Dan A Preston, Joseph D Preston, Rod L Proctor: Circuitry for activating a modem in a cellular telephone. Airbiquity, Stoel Rives, January 20, 2004: US06681121 (90 worldwide citation)

A wireless telecommunication device, such as a cell phone, is coupled to a source of digital data which may comprise a GPS receiver. In one embodiment, a GPS receiver and inband signaling modem are integrated into the cell phone battery pack. A pushbutton on the battery pack is actuated by a user to ...


4
Dan A Preston, Joseph D Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor, Philip R Smith: Synchronizer for use with improved in-band signaling for data communications over digital wireless telecommunications networks. Airbiquity, Stolowitz Ford Cowger, October 23, 2007: US07286522 (77 worldwide citation)

An inband signaling modem communicates digital data over a voice channel of a wireless telecommunications network. An input receives digital data. An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech. The digital data is also encoded to prev ...


5
Dan A Preston, Joseph D Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor, Philip R Smith: In-band signaling for data communications over digital wireless telecommunications networks. Airbiquity, Stoel Rives, December 19, 2006: US07151768 (72 worldwide citation)

An inband signaling modem communicates digital data over a voice channel of a wireless telecommunications network. An input receives digital data. An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech. The digital data is also encoded to prev ...


6
Dan A Preston, Joseph D Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor: Network delay identification method and apparatus. Airbiquity, Stoel Rivers, January 16, 2007: US07164662 (64 worldwide citation)

Network delay is determined in order to synchronize a clock in a mobile station with a reference clock. Tone are generated that represent a sequence of bits in a synchronization flag. The tones are sampled beginning at a selected sample start time. The sampled tones are demodulated to identify the b ...


7
Dan A Preston, Joseph D Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor, Phillip R Smith: In-band signaling for data communications over digital wireless telecommunications networks. Airbiquity, Stolowitz Ford Cowger, November 29, 2011: US08068792 (39 worldwide citation)

An inband signaling modem communicates digital data over a voice channel of a wireless telecommunications network. An input receives digital data. An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech. The digital data is also encoded to prev ...


8
Dan A Preston, Joseph D Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor: Network delay identification method and apparatus. Airbiquity, Stoel Rives, October 16, 2007: US07283567 (33 worldwide citation)

Network delay is determined in order to synchronize a clock in a mobile station with a reference clock. Tones are generated that represent a sequence of bits in a synchronization flag. The tones are sampled beginning at a selected sample start time. The sampled tones are demodulated to identify the ...


9
Daniel A Preston, Joseph D Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor: Network delay identification method and apparatus. Stoel Rives, February 7, 2002: US20020015424-A1 (1 worldwide citation)

Network delay is determined in order to synchronize a clock in a mobile station with a reference clock. Tone are generated that represent a sequence of bits in a synchronization flag. The tones are sampled beginning at a selected sample start time. The sampled tones are demodulated to identify the b ...


10
Dan A Preston, Joseph D Preston, James A Vroman: System and method to communicate time stamped, 3-axis geo-position data within telecommunication networks. Integrated Data Communications, feng xun, January 12, 2000: CN98800997

A remote communications apparatus (10) such as a cell telephone is equipped with a satellite position system SPS receiver (26) to acquire location data. The location data is encoded using multiple audio frequency tone encoding (48) such as DTMF for transmission over the voice channel (70) of the tel ...