Qualcomm Incorporated

Leapfrog Enterprises, Inc.

Qualcomm Atheros Inc.

Peter Van Horn

Olaf Josef Hirsch

Bharath Bhoopalam

Manev Luthra

Shriram Krishnan

Charles Thaeler

A common coexistence timer can be implemented on collocated or proximate wireless radio devices so that timing information associated with scheduled communications of each of the wireless radio devices is communicated with a common time reference. The coexistence timer provides the common time reference for the wireless radio devices. A transmitting wireless radio device can calculate a difference time associated with the timing information of a scheduled communication and can provide the difference time to a receiving wireless radio device. The receiving wireless radio device can convert the difference time into a time format corresponding to the receiving wireless radio device's local time reference. This can minimize interference between the collocated or proximate wireless radio devices, thus minimizing performance degradation, packet collision, and interference. Moreover, this also can eliminate timing errors due to the wireless radio devices using different timers operating at different frequencies or being synchronized to different crystals.

Coexistence timer mechanism for wireless communication systems

A method for hierarchical management of a plurality of regions of an encoded surface. The method includes recognizing unique encoded information on a portion of the surface in response to a pen computer touching down on the portion. A unique location of the portion of the surface is determined based on the unique encoded information. A region is determined out of the plurality of regions for the location. Upon the determination of the region, a determination is made as to whether the location is within a sub-region within the region. If the location is within a sub-region, a function of the pen computer is performed based on the sub-region. If the location is not within a sub-region, a function of the pen computer is performed based on the region.

Method and system for hierarchical management of a plurality of regions of an encoded surface used by a pen computer

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San Jose, CA, United States of America

Peter Van Horn