07757956 is referenced by 89 patents and cites 130 patents.

Modular, portable data collection terminals are disclosed for use in mixed wireless and hard-wired RF communication networks, wherein various radio transmitter modules and associated antennas may be selectively added to a base terminal unit to solve networking problems associated with specific types of business environments. Modularity exists in both the hardware (splitting data collection and processing control circuitry from radio transceiver control circuitry) and software (splitting transceiver specific, lower level communication protocol from generic, higher level communication protocol). The control circuitry, including associated microprocessors devices, interact to selectively activate communication circuits to perform necessary communication or data processing functions and enter and remain in a power-saving dormant state during other times. To support such dormant or “sleeping” states, a series of communication protocols provide for channel access to the communication network.

Title
Modular, portable data processing terminal for use in a radio frequency communication network
Application Number
11/459884
Publication Number
7757956 (B2)
Application Date
July 25, 2006
Publication Date
July 20, 2010
Inventor
Patrick W Kinney
Cedar Rapids
IA, US
Ronald L Mahany
Cedar Rapids
IA, US
Guy J West
Cedar Rapids
IA, US
Phillip Miller
Cedar Rapids
IA, US
Steven E Koenck
Cedar Rapids
IA, US
Agent
McAndrews Held & Malloy
Assignee
Broadcom Corporation
US
IPC
G06K 7/10
View Original Source