Microsoft Technology Licensing, LLC

Lambert H Green

Vivek Bhanu

John W Archer

Siamak Poursabahian

Edwin A Hernandez-Mondragon

Arun Ayyagari

Gaurav Lochan

A system and method for discovering and connecting to a preferred remote Bluetooth device by a local Bluetooth device. An inquiry scan cache and a page scan cache are maintained. The inquiry scan cache is updated by way of a periodic inquiry scan. The page scan cache is refreshed by way of an attempt to connect to the preferred remote Bluetooth device. Periodically, and more frequently than the periodic inquiry scan, a list of available remote Bluetooth devices is formed from entries in the inquiry scan cache concatenated with each entry in the page scan cache for which a page scan is successful. In one embodiment, the page scan cache holds a finite number of entries, and an expiration policy is applied to each added entry. In another embodiment, the inquiry scan cache is also updated when a remote Bluetooth device attempts to connect to the local Bluetooth device.

Smart scan for wireless devices

A system and method for enabling and implementing personal area networking on a local machine having one or more local Bluetooth devices. A set of interoperating data structures are employed in an implementation of a PAN driver, including device control blocks and connection control blocks, which comprise finite state machines. Also disclosed are a method and system for setting and advertising multiple PAN profile roles in a Bluetooth device.

Bluetooth pan driver

Growing community of inventors

Redmond, WA, United States of America

Lambert H Green