Walter A Roehr

57549460, May 19, 1998

Sep 21, 1993

8/124219

Dennis Wayne Cameron - Jackson MS
Walter Charles Roehr - Reston VA
Rade Petrovic - Oxford MS
Jai P. Bhagat - Jackson MS
Masood Garahi - Madison MS
William D. Hays - Jackson MS
David W. Ackerman - Washington DC

Mobile Telecommunication Technologies - Jackson MS

H04B 700

455 381

A two-way communication system for communication between a system network and a mobile unit. The system network includes a plurality of base transmitters and base receivers included in the network. The base transmitters are divided into zonal assignments and broadcast in simulcast using multi-carrier modulation techniques. The system network controls the base transmitters to broadcast in simulcast during both systemwide and zonal time intervals. The system network dynamically alters zone boundaries to maximize information throughput. The system also uses a mobile unit which receives messages from the network and transmits messages to the network. The mobile unit includes a switch that allows a user to request the network to retransmit a received message that contains errors.

59152109, Jun 22, 1999

Jul 24, 1997

8/899476

Dennis Wayne Cameron - Jackson MS
Walter Charles Roehr - Reston VA
Jai P. Bhagat - Jackson MS
Masood Garahi - Madison MS
William D. Hays - Jackson MS
David W. Ackerman - Washington DC

Destineer Corporation - Jackson MS

H04B 150

455 59

A two-way communication system for communication betweeen a system network and a mobile unit. The system network includes a plurality of base transmitters and base receivers include in the network. The base transmitters are divided into zonal assignments and broadcast in simulcast using multi-carrier modulation techniques. The system network controls the base transmitters to broadcast in suimulcast during both systemwide and zone boundaries to maximize information throughout. The preferred mobile unit inlcudes a noise detector circuit to prevent unwanted transmissions. The system network further provides an adaptive registration feature for mobile units which controls the registration operation by the mobile units to maximize information throughout.

57840024, Jul 21, 1998

May 2, 1995

8/434349

Walter Roehr - Reston VA

Mobile Telecommunication Technologies - Jackson MS

H04Q 700

3408255

A low-power random digit generator for use with existing circuitry samples a changing physical variable. In a communications device, the random digit generator has an A/D converter that repetitively converts a received analog signal at a conversion rate, where a magnitude of the received analog signal changes at a received rate. At least one bit from the conversion is selected, and a random digital signal having a magnitude corresponding to the at least one bit is generated. The communications device preferably taps off an existing A/D converter and uses combinational circuitry to minimize power consumption.

55818048, Dec 3, 1996

Feb 13, 1995

8/387228

Dennis W. Cameron - Jackson MS
Walter C. Roehr - Reston VA
Rade Petrovic - Oxford MS
Jai P. Bhagat - Jackson MS
Masood Garahi - Madison MS
William D. Hays - Jackson MS
David W. Ackerman - Washington DC

Destineer Corporation - Jackson MS

H04B 726

455 541

A two-way communication system for communication between a system network and a mobile unit. The system network includes a plurality of base transmitters and base receivers included in the network. The base transmitters are divided into zonal assignments and broadcast in simulcast using multi-carrier modulation techniques. The system network controls the base transmitters to broadcast in simulcast during both systemwide and zonal time intervals. The system network dynamically alters zone boundaries to maximize information throughput. The preferred mobile unit includes a noise detector circuit to prevent unwanted transmissions. The system network further provides an adaptive registration feature for mobile units which controls the registration operations by the mobile units to maximize information throughput.

55904033, Dec 31, 1996

Nov 12, 1992

7/973918

Dennis W. Cameron - Jackson MS
Walter C. Roehr - Reston VA
Rade Petrovic - Oxford MS
Jai P. Bhagat - Jackson MS
Masood Garahi - Madison MS
William D. Hays - Jackson MS
David W. Ackerman - Washington DC

Destineer Corporation - Jackson MS

H04B 706

455 512

A two-way communication system for communication between a system network and a mobile unit. The system network includes a plurality of base transmitters and base receivers included in the network. The base transmitters are divided into zonal assignments and broadcast in simulcast using multi-carrier modulation techniques. The system network controls the base transmitters to broadcast in simulcast during both systemwide and zonal time intervals. The system network dynamically alters zone boundaries to maximize information throughput. The preferred mobile unit includes a noise detector circuit to prevent unwanted transmissions. The system network further provides an adaptive registration feature for mobile units which controls the registration operations by the mobile units to maximize information throughput.

56598912, Aug 19, 1997

Jun 7, 1995

8/480718

William D. Hays - Jackson MS
Dennis Cameron - Jackson MS
Walter Roehr - Reston VA

Mobile Telecommunication Technologies - Jackson MS

H04B 102

455103

A method of multicarrier modulation using co-located transmitters to achieve higher transmission capacity for mobile paging and two-way digital communication in a manner consistent with FCC emission mask limits. Co-location of the transmitters obviates the need for stringent, symmetrical subchannel interference protection and provides for a wider range of operating parameters, including peak frequency deviation, bit rate, and carrier frequencies, to obtain optimal transmission performance.

56341989, May 27, 1997

Feb 13, 1995

8/387229

Dennis W. Cameron - Jackson MS
Walter C. Roehr - Reston VA
Jai P. Bhagat - Jackson MS
Masood Garahi - Madison MS
William D. Hays - Jackson MS
David W. Ackerman - Washington DC

Destineer Corporation - Jackson MS

H04B 1502

455 63

A two-way communication system for communication between a system network and a mobile unit. The system network includes a plurality of base transmitters and base receivers included in the network. The base transmitters are divided into zonal assignments and broadcast in simulcast using multi-carrier modulation techniques. The system network controls the base transmitters to broadcast in simulcast during both systemwide and zonal time intervals. The system network dynamically alters zone boundaries to maximize information throughput. The preferred mobile unit includes a noise detector circuit to prevent unwanted transmissions. The system network further provides an adaptive registration feature for mobile units which controls the registration operations by the mobile units to maximize information throughput.