专利检索 ap:("Alice Jane Brush" OR "James W. Scott" OR "Galen C. Hunt" OR "Raman K Sarin" OR "Andrew W Jacobs" OR "Barry C. Bond" OR "Oscar E Murillo" OR "Amy Karlson") AND inv:"Raman K Sarin" 第 1 页

1.

发明授权
Retracing steps 有权

公开(公告)号：US10408623B2

公开(公告)日：2019-09-10

申请号：US12484089

申请日：2009-06-12

申请人： Alice Jane Brush , James W. Scott , Galen C. Hunt , Raman K Sarin , Andrew W Jacobs , Barry C. Bond , Oscar E Murillo , Amy Karlson

发明人： Alice Jane Brush , James W. Scott , Galen C. Hunt , Raman K Sarin , Andrew W Jacobs , Barry C. Bond , Oscar E Murillo , Amy Karlson

IPC分类号： G01C21/00 , G01C21/34 , G01C21/20 , G01C21/16

摘要： Techniques for creating breadcrumbs for a trail of activity are described. The trail of activity may be created by recording movement information based on inferred actions of walking, not walking, or changing floor levels. The movement information may be recorded with an accelerometer and a pressure sensor. A representation of a list of breadcrumbs may be visually displayed on a user interface of a mobile device, in a reverse order to retrace steps. In some implementations, a compass may additionally or alternatively be used to collect directional information relative to the earth's magnetic poles.