Multi-protocol communications between host devices and stylus devices
Number of patents in Portfolio can not be more than 2000
United States of America
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Oct 8, 2019
Grant Date -
Nov 29, 2018
app pub date -
May 25, 2017
filing date -
May 25, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A host device communicates with a stylus device. A digitizer at the host device receives a scrambled stylus code frame transmitted from the stylus device. The scrambled stylus code frame includes a scrambled data field and an unscrambled data field. The scrambled data field has been scrambled by the stylus device using a pseudo-random sequence. A descrambler descrambles the at least one scrambled data field of the scrambled stylus code frame using the pseudo-random sequence to output at least one descrambled data field in a descrambled stylus code frame. The descrambled stylus code frame further includes the at least one unscrambled data field. A synchronizer synchronizes the at least one descrambled data field and the at least one unscrambled data field of the descrambled stylus code frame with a supported code pattern.
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