Inventor
AYERST DOUGLAS I
US21 patents
⚠️ This page may combine multiple inventors who share the name “AYERST DOUGLAS I”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MOTOROLA INC
18 patentsUS5740534AApr 14, 1998
Method for determining available frequencies in selective call receivers
MOTOROLA INC295 citations97
US5638369AJun 10, 1997
Method and apparatus for inbound channel selection in a communication system
MOTOROLA INC118 citations96
US5799012AAug 25, 1998
System controlled asymmetrical automatic repeat request protocol method
MOTOROLA INC78 citations95
US5323418AJun 21, 1994
Code division multiple access (CDMA) inbound messaging system utilizing interference cancellation to recover inbound messages
MOTOROLA INC52 citations95
US5473612ADec 5, 1995
Method and apparatus for minimizing false detection of packet data in a communication receiver
MOTOROLA INC80 citations94
US6141535AOct 31, 2000
Communication systems for controlling registration of selective call devices
MOTOROLA INC20 citations92
US5381447AJan 10, 1995
Code division multiple access messaging system for providing seed information based on times of inbound messages
MOTOROLA INC20 citations92
US5878035AMar 2, 1999
Method and apparatus for mixing protocols in a radio messaging system
MOTOROLA INC19 citations91
US5521926AMay 28, 1996
Method and apparatus for improved message reception at a fixed system receiver
MOTOROLA INC26 citations91
US5712624AJan 27, 1998
Method and apparatus for optimizing receiver synchronization in a radio communication system
MOTOROLA INC36 citations90
US5875387AFeb 23, 1999
Method and apparatus for receiving a radio signal within a home control channel in a multichannel radio communication system
MOTOROLA INC18 citations84
US6515971B2Feb 4, 2003
Method and apparatus to enable background scanning
MOTOROLA INC8 citations74
US5689805ANov 18, 1997
Communication system and method providing minimum message transmission delay
MOTOROLA INC12 citations73
US5649294AJul 15, 1997
Method and apparatus for delivering global event information in a radio communication system
MOTOROLA INC7 citations73
US6075794AJun 13, 2000
Method for coordinating inbound channels in a selective call communication system
MOTOROLA INC8 citations71
US6611197B1Aug 26, 2003
Selective call transceiver and method of re-registering same
MOTOROLA INC10 citations70
US5923266AJul 13, 1999
Method for dynamically changing control frames for selective call receiving devices
MOTOROLA INC3 citations61
US5710547AJan 20, 1998
Selective call transceiver and method of re-registering same
MOTOROLA INC2 citations59