Stanley J Knapczyk

6915130, Jul 5, 2005

Jun 13, 2000

09/593028

Mark D. Chapman - Marengo IL, US
Thomas P. Ryan - Palatine IL, US
Stanley J. Knapczyk - Justice IL, US
Carlton R. Van Tassle - Algonquin IL, US

Motorola, Inc. - Schaumburg IL

H04B001/38

455434, 455574

The invention relates to a scan mode of operating for a communication system that supports both voice and data communication services. Prior to entering the scan mode, a mobile station () provides a message to the fixed network equipment, and particularly a data controller () within the fixed network equipment, that it is entering scan mode. When exiting scan mode, the mobile station () sends a message to the data controller () indicating that it is no longer in scan mode. With knowledge of whether the mobile station () is in scan mode, the data controller () sends data messages to the mobile station using a preamble. The preamble may include a plurality of short confirmed message packets () and each may contain a preamble list of mobile stations to which data messages are scheduled to be sent.

20020018571, Feb 14, 2002

Aug 23, 2001

09/938184

Walter Anderson - Algonquin IL, US
Stanley Knapczyk - Justice IL, US
Larry Murrill - Schaumburg IL, US

H04L009/00

380/277000, 380/273000

Key management methods and communication protocol adapted to reduce the burden placed upon a key delivery device (e.g., KVL) operator. The KVL () receives KMM frames () including a target destination field () and a key management message field (). Key management messages (KMMs) to be delivered to various targets are included within the key management message fields. The KVL identifies targets either from target destination identifiers in the target destination field (if the KMM is to be delivered encrypted or “black” transfer to target) or from target destination identifiers in the KMM itself (if the KMM is to delivered unencrypted or “red” transfer to target). The KVL determines candidate devices to be targets if they correspond to the target destination identifiers and if so, the KVL automatically delivers the proper key management messages to the respective targets. Key management messages are not delivered to candidate devices not determined to be targets. Outcomes, e.g., success or failure, of attempted deliveries of key management messages are communicated from the target devices to the KVL, and from the KVL to a key management facility (KMF). The method is useful for first-time rekeying or for ongoing rekeying.

20080132204, Jun 5, 2008

Dec 4, 2006

11/566401

RYAN P. ZIOLKO - SCHAUMBURG IL, US
STANLEY J. KNAPCZYK - JUSTICE IL, US
CHRIS A. KRUEGEL - PLAINFIELD IL, US

MOTOROLA, INC. - SCHAUMBURG IL

H04M 1/66

455411

A method for updating at least one attribute stored at a mobile station comprises determining a mobile station hash that is representative of a set of attributes that is currently stored at the mobile station and determining a desired hash that is representative of a set of desired attributes desired to be stored at the mobile station. The method additionally includes comparing the mobile station hash with the desired hash, and updating at least one attribute in the set of attributes that is currently stored at the mobile station when the mobile station hash is not equal to the desired hash.

51310406, Jul 14, 1992

Feb 28, 1991

7/662143

Stanley Knapczyk - Justice IL

Motorola, Inc. - Schaumburg IL

H04L 900

380 50

A method for backing up and erasing encryption keys that provides a backup power supply (110) so that keys stored in a memory (104) will not be lost inadvertently, while still permitting keys to be erased, either in response to a low battery condition in the absence of the main supply (101), or in response to an external key erase input (105).

53717392, Dec 6, 1994

Jun 29, 1992

7/905602

Stanley Knapczyk - Justice IL

Motorola, Inc. - Schaumburg IL

H04J 302

370 858

A radio communication system (600) having at least two radio interface devices (602) requires an access protocol for accessing a common information bus (605). The bus (605) is necessary for sending information to a communication system controller (601). A first of the interface devices periodically polls the common information bus (605) to determine whether or not it is available for sending information to the communication system controller (601). When available, the device acquires access to the bus (605), and sends information to the controller (601), via the information bus (605). The device then releases the bus (605) at a subsequent polling period for that device, thereafter allowing a second interface device to gain access to the bus (605). The foregoing sequence ensures that each of the interface devices (602) will, within a predetermined time, poll the bus (605) and acquire it, as necessary, for sending information to the system controller (601).