Richard S Rachwalski

6392544, May 21, 2002

Sep 25, 2000

09/669289

Timothy James Collins - Lockport IL
Patrick L. Rakers - Kildeer IL
Richard Stanley Rachwalski - Lemont IL
James G. Quaderer - Sunnyvale CA

Motorola, Inc. - Schaumberg IL

G08B 1314

3405727, 3405681, 34082554, 340571, 340539, 3405721, 340 101, 340 102, 340 1031, 340 1032, 340 22, 340 591

A radio frequency identification exciter ( ) includes a plurality of antenna elements ( ) that are spaced to define active areas ( ). A matrix switch ( ) flexibly connects the plurality of antenna elements to an exciter circuit ( ). Independent switches ( ) are selectively switched such that an electric field is generated between at least two antenna elements whereby radio frequency identification tags ( ) in the vicinity of the two antenna elements are capacitively powered to exchange data with the exciter. Antenna elements other than the at least two antenna elements may be selectively coupled to a signal from the exciter circuit that inhibits activation of radio frequency identification tags in the vicinity of those antenna elements. The matrix switch preferably comprises polymer-based circuits.

6584301, Jun 24, 2003

May 25, 2000

09/578433

Thomas B. Bohn - McHenry IL
Richard S. Rachwalski - Lemont IL
Mark A. Schamberger - South Elgin IL

Motorola, Inc. - Schaumburg IL

H04B 500

455 41, 455106, 340 101

An inductive reader device ( ) communicates with a transponder ( ) using electromagnetic coupling. The reader device includes a transmitter ( ), a receiver ( ), a first coil element ( ), and a second coil element ( ). The first coil element is directly connected to the transmitter to emit a radio frequency excitation signal. The first coil element receives a radio frequency response signal from the transponder via electromagnetic coupling. The second coil element is directly connected to the receiver to provide a response signal to the receiver. The second coil element is loosely or inductively coupled to the first coil element via a predetermined mutual inductance due to the spatial relationship between the first coil element and the second coil element. Hence, the second coil element receives the radio frequency response signal from the first coil element. Advantageously, a signal coupler required for the receiver is integrated with an antenna element by virtue of the second coil element.

6754190, Jun 22, 2004

Oct 17, 2001

09/981031

David P. Gurney - Des Plaines IL
Stephen L. Kuffner - Algonquin IL
Timothy James Collins - Lockport IL
Richard Stanley Rachwalski - Lemont IL
Bruce C. Eastmond - Downers Grove IL

Motorola, Inc. - Schaumburg IL

H04Q 700

370329, 370342

A source device ( ) stores predetermined data and establishes a channel selection profile comprising a plurality of channel selections. Each channel selection is derived from a subset of the predetermined data. The source device ( ) transmits at least a portion of the predetermined data over at least a first channel selected from the channel selection profile.

6763996, Jul 20, 2004

Sep 18, 2001

09/955345

Patrick L. Rakers - Kildeer IL
Timothy James Collins - Lockport IL
Richard Stanley Rachwalski - Lemont IL
Michael L. Bushman - Hanover Park IL

Motorola, Inc. - Schaumburg IL

G06F 1700

235375

In accordance with the present invention, a radio frequency identification (RFID) device comprises a plurality of data fields. The RFID device transmits a data symbol from a data field, receives an acknowledgement symbol, and compares the transmitted data symbol to the received acknowledgement symbol. The RFID device repeats these steps until data transmission is complete as long as each transmitted data symbol is equivalent to a corresponding received acknowledgement symbol; otherwise, the RFID device maintains the data field from which the last data symbol was transmitted, and temporarily suspends data transmission. When the RFID receives a request for RFID devices temporarily suspended in a given data field to resume data transmission, if the given data field in the request is equivalent to the data field that was maintained, the RFID device repeats the steps above starting with the first symbol in the data field that was maintained.

7023817, Apr 4, 2006

Mar 11, 2003

10/385893

Stephen Kuffner - Algonquin IL, US
Timothy Collins - Lockport IL, US
David P. Gurney - Carpentersville IL, US
Richard S. Rachwalski - Lemont IL, US

Motorola, Inc. - Schaumburg IL

H04B 7/212

370324, 370278, 370503, 709227, 340 22

A communications method including the steps of: activating a plurality of signal sources, and transmitting a synchronization event to the plurality of signal sources to cause the plurality of signal sources to simultaneously transmit data in response to the synchronization event.

7239624, Jul 3, 2007

Oct 26, 2004

10/973530

Gregory J. Buchwald - Crystal Lake IL, US
Lawrence M. Ecklund - Wheaton IL, US
Richard S. Rachwalski - Lemont IL, US
S. David Silk - Barrington IL, US
Stephen L. Kuffner - Algonquin IL, US

Motorola, Inc. - Schaumburg IL

H04Q 7/20

370338, 370433, 370329, 455450, 455509, 348725, 375346

The presence of the non-television transmission within a channel is used to indicate that secondary non-licensed usage of the channel is permitted. Specifically, if secondary users incorporate the means to identify the unique modulation signature of the secondary user, decoding of a beacon signal may not be necessary. With the above in mind, a radio will be prevented from transmitting within a frequency band when no transmission within the licensed spectrum is currently taking place; the licensee is currently transmitting on the spectrum (e. g. , television transmissions are taking place utilizing the spectrum, or the radio cannot sense the presence of a data channel (beacon).

7248165, Jul 24, 2007

Sep 9, 2004

10/937208

Timothy J. Collins - Homer Glen IL, US
David P. Gurney - Carpentersville IL, US
Stephen L. Kuffner - Algonquin IL, US
Richard S. Rachwalski - Lemont IL, US

Motorola, Inc. - Schaumburg IL

G08B 13/14

3405721, 3405727

The present invention provides a multi-band, multi-mode RFID tag that uses a single antenna structure and integrated circuit to provide asset location information at any stage of a supply chain. The unified tag design operates at multiple frequencies (or bands) using the antenna structure, for example, 125 kHz, 13. 56 MHz, 915 MHz, and 2. 45 GHz, and preferably operates electrostatically (at lower frequencies) and electromagnetically (ay higher frequencies). An on-chip frequency monitor in the integrated circuit automatically determines which frequency is present and derives a local clock for the tag's integrated circuit, which can vary in accordance with the frequency or which can be constant. Alternatively, a phase locked loop circuit can be used to derive a local clock signal modulated into the interrogation signal. On-chip matching and power extraction circuits derive power for the tag from the interrogation signal, which is preferably passive.

7397372, Jul 8, 2008

Dec 22, 2005

11/275302

Robert A. Perri - Bartlett IL, US
Timothy J. Collins - Homer Glen IL, US
Daniel R. Gamota - Palatine IL, US
Krishna Jonnalagadda - Algonquin IL, US
Krishna Kalyanasundaram - Elmhurst IL, US
Richard Rachwalski - Lemont IL, US

Motorola, Inc. - Schaumburg IL

G08B 13/26

340562, 3405721, 3405681, 705 10

Merchandising and marketing data collection systems () collect data on shopper's () interaction with merchandise samples (), page store personnel, output promotional vouchers and use the merchandise samples to access information about the capabilities of the merchandise being sold.