US 11,933,906 B2
Wearable accessories for determining accurate elevation information for navigation
Ming Sun, Mountain View, CA (US); and Fei He, Santa Clara, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Sep. 21, 2021, as Appl. No. 17/480,763.
Prior Publication US 2023/0087934 A1, Mar. 23, 2023
Int. Cl. G01S 19/48 (2010.01); G01S 19/31 (2010.01); G01S 19/45 (2010.01); G01C 5/06 (2006.01); G01S 19/05 (2010.01); G01S 19/40 (2010.01); H04W 4/02 (2018.01)
CPC G01S 19/48 (2013.01) [G01S 19/31 (2013.01); G01S 19/45 (2013.01); G01C 5/06 (2013.01); G01S 19/05 (2013.01); G01S 19/40 (2013.01); H04W 4/025 (2013.01)] 17 Claims
OG exemplary drawing
 
8. A method of determining elevation information, comprising:
receiving, with one or more processors, first location information from a navigation system at a first time;
receiving, with the one or more processors, first barometric information from a wearable accessory at the first time;
receiving, with one or more processors, second location information from the navigation system at a second time;
receiving second barometric information from the wearable accessory at the second time;
detecting, with the one or more processors, a change in vertical distance between a portable electronic device and the wearable accessory from the first time to the second time;
determining, with one or more processors, updated second location information, including at least a z coordinate for the second time, based on the second location information, the first and second barometric information, and the change in vertical distance; and
providing turn-by-turn navigation instructions using the updated second location information.