1
Rod L Proctor, Andrew J Rimkus: Facility and method for tracking physical assets. Airbiquity, Stoel Rives, September 2, 2003: US06614349 (281 worldwide citation)

A communication module for an asset to be monitored operates to periodically receive a signal from a monitoring facility via a first wireless communication system, and in response to the absence of the signal at an expected time, communicating with the module via a second wireless system. The first ...


2
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 ...


3
Dan A Preston, Joseph Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor: In-band signaling for data communications over digital wireless telecommunications network. Airbiquity, Stoel Rives, February 10, 2004: US06690681 (125 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 ...


4
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 ...


5
Dan A Preston, Joseph Preston, Rod L Proctor: In-band signaling for synchronization in a voice communications network. Airbiquity, Stoel Rives, August 3, 2004: US06771629 (88 worldwide citation)

Methods for determining a system latency of an audio call path of a voice communications network, and for synchronizing a remote unit (


6
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 ...


7
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 ...


8
Dan A Preston, Joseph Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor: Software code for improved in-band signaling for data communications over digital wireless telecommunications networks. Airbiquity, Stoel Rives, April 17, 2007: US07206305 (65 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 ...


9
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 ...


10
Dan A Preston, Joseph Preston, Robert Leyendecker, Wayne Eatherly, Rod L Proctor: Cellular telephone having improved in-band signaling for data communications over digital wireless telecommunications networks. Airbiquity, Stoel Rives, May 22, 2007: US07221669 (61 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 ...