Lawrence W Doyle Deceased2816 High Range Dr, Las Vegas, NV 89134

6453168, Sep 17, 2002

Aug 2, 1999

09/365702

Dennis D. McCrady - Holmdel NJ
Lawrence J. Doyle - Hazlet NJ
Howard Forstrom - Fairlawn NJ

ITT Manufacturing Enterprises, Inc - Wilmington DE

H04B 700

455517, 455506, 455 65, 4552772, 455456, 342457, 375347

A spread spectrum position location communication system determines the position of a mobile master radio using a round-trip messaging scheme in which the time of arrive (TOA) of ranging messages is accurately determined to yield the range estimates required to calculate the position of the mobile radio via trilateration. The master radio transmits outbound ranging messages to plural reference radios which respond by transmitting reply ranging messages. Upon reception of the reply ranging message, the master radio determines the range to the reference radio from the signal propagation time calculated by subtracting the far-end turn around time from the round-trip elapsed time. Any combination of fixed or mobile radios of known positions can be used as the reference radios for another mobile radio in the system, thereby providing adaptability under varying transmission conditions. The individual radios do not need to be synchronized to a common time reference, thereby eliminating the need for highly accurate system clocks. By performing internal delay calibration, errors caused by difficult-to-predict internal transmitter and receiver delay variations can be minimized.

6665333, Dec 16, 2003

Apr 29, 2002

10/133368

Dennis D. McCrady - Holmdel NJ
Lawrence J. Doyle - Hazlet NJ
Howard Forstrom - Fairlawn NJ

ITT Manufacturing Enterprises, Inc. - Wilmington DE

H04B 1707

375147, 375141

A spread spectrum position location communication system determines the position of a mobile master radio using a round-trip messaging scheme in which the time of arrive (TOA) of ranging messages is accurately determined to yield the range estimates required to calculate the position of the mobile radio via trilateration. The master radio transmits outbound ranging messages to plural reference radios which respond by transmitting reply ranging messages. Upon reception of the reply ranging message, the master radio determines the range to the reference radio from the signal propagation time calculated by subtracting the far-end turn around time from the round-trip elapsed time. Any combination of fixed or mobile radios of known positions can be used as the reference radios for another mobile radio in the system, thereby providing adaptability under varying transmission conditions. The individual radios do not need to be synchronized to a common time reference, thereby eliminating the need for highly accurate system clocks. By performing internal delay calibration, errors caused by difficult-to-predict internal transmitter and receiver delay variations can be minimized.

6801782, Oct 5, 2004

Feb 6, 2001

09/777625

Dennis D. McCrady - Holmdel NJ
Peter Cummiskey - Clark NJ
Lawrence J. Doyle - Hazlet NJ
Howard Forstrom - Fairlawn NJ

ITT Manufacturing Enterprises, Inc. - Wilmington DE

H04Q 700

455517, 455506, 455 65, 4552772, 4554561, 455457, 375347, 3424571

A position location communication system determines the position of a mobile master radio using a round-trip messaging scheme in which the time of arrive (TOA) of ranging signals is accurately determined to yield the range estimates required to calculate the position of the mobile radio. The master radio transmits ranging signals to plural reference radios which respond by transmitting reply ranging signals. Upon reception of the reply ranging signal, the master radio determines the range to the reference radio from the signal propagation time. Any combination of fixed or mobile radios having known positions can be used as the reference radios for another mobile radio in the system. Individual radios do not need to be synchronized to a common time reference, thereby eliminating the need for highly accurate system clocks. Errors in TOA estimates are minimized by performing internal delay calibration, Doppler compensation, leading-edge-of-the-signal curve fitting and frequency diversity techniques.

5326136, Jul 5, 1994

Apr 12, 1993

8/045641

Lawrence R. Doyle - Wrightwood CA

B42D 1500

283 58

A check book is disclosed which includes checks arranged such that if any one or more of the checks is removed from the check book other then the top, or next check, a stripe printed on a subsequent check will become visible, thus warning that the check has been removed out of turn. An invisible authenticating signature is placed on each check. This can be easily rendered visible after the check is signed. The comparison of the two signatures provides a means for identifying a forgery. A set of symbols are printed on the face of the check. When cashing the check, the bearer may select certain of the symbols. This selection may be compared with a similar set previously chosen by the account holder to assure a bank teller that the bearer is in fact the true account holder.