Autani Corporation

Einstruction Corporation

Mark Edward Plasterer

David Eric Timmons

Dana Gene Doubrava

Alan D Schnittman

Scott E Metker

Justin A Ethier

Richard Wiley Prugh

A manager device manages communications between wireless devices in a building automation and control (BAC) network. The manager device includes multiple RF modules and a CPU, all disposed within a single housing. Each RF module includes an antenna and RF transceiver for transmitting and receiving wireless RF signals to and from the wireless devices. Each RF transceiver of each RF module operates on a different RF frequency from the RF transceiver of each of the other RF modules. The CPU runs multiple processes in a wireless network protocol stack, including an event handler process and multiple transceiver control processes. The event handler process monitors events within the BAC network, and manages message traffic to and from the transceiver control processes. The transceiver control processes receive messages from and send messages to the event handler process. Each transceiver control process is associated with a corresponding one of the RF transceivers. Each transceiver control process sends messages to and receives messages from the wireless devices via its associated RF transceiver.

Communications between wireless devices in building automation and control network

An electromagnetic interactive whiteboard system includes a first electronic pen () constructed and arranged to operate at a first frequency (F). At least a second electronic pen () is constructed and arranged to operate at a second frequency (F) that is different from the first frequency. An electromagnetic interactive whiteboard () has a single conductive grid () constructed and arranged to receive electromagnetic signals from the pens due to proximity of the pens to the grid. A circuit () separates the first and second frequencies into their respective X and Y component frequencies when the pens are operating simultaneously. A controller () receives a signal including the separated X and Y component frequencies of each of the first and second pens to detect each pen and to determine an X and Y coordinate position of each pen relative to the grid based on the X and Y component frequencies.

Dual pen interactive whiteboard system

Growing community of inventors

Ellicott City, MD, United States of America

Mark Edward Plasterer