公开(公告)号：US09990060B1

公开(公告)日：2018-06-05

申请号：US15895660

申请日：2018-02-13

Applicant: Amazon Technologies, Inc.

Inventor： Heidi Christine Schubert ,  Lutz Gerhard

IPC: G06F3/041 ,  G06F3/0354

CPC classification number: G06F3/03545 ,  G06F3/041 ,  G06F3/0416 ,  G06F3/04883 ,  G06K9/222

Abstract: Devices, systems and methods are disclosed for processing stylus interactions with a device and drawing the results of those interactions in a manner that reduces noise and latency. This includes selecting a filter based on a velocity of an input, the velocity determined by comparing coordinates and timestamps associated with the input events. A first filter may be determined using previous input events to reduce latency and a second filter may be determined using previous and subsequent input events to improve accuracy of the filter selection. An output may be generated using the first filter and/or the second filter to combine the benefits of the reduced latency and the increased accuracy.

公开(公告)号：US09898099B1

公开(公告)日：2018-02-20

申请号：US14570727

申请日：2014-12-15

Applicant: Amazon Technologies, Inc.

Inventor： Heidi Christine Schubert ,  Lutz Gerhard

IPC: G06F3/0354 ,  G06F3/041

CPC classification number: G06F3/03545 ,  G06F3/041 ,  G06F3/0416 ,  G06F3/04883 ,  G06K9/222

Abstract: Devices, systems and methods are disclosed for processing stylus interactions with a device and drawing the results of those interactions in a manner that reduces noise and latency. This includes selecting a filter based on a velocity of an input, the velocity determined by comparing coordinates and timestamps associated with the input events. A first filter may be determined using previous input events to reduce latency and a second filter may be determined using previous and subsequent input events to improve accuracy of the filter selection. An output may be generated using the first filter and/or the second filter to combine the benefits of the reduced latency and the increased accuracy.

公开(公告)号：US11274930B1

公开(公告)日：2022-03-15

申请号：US16710935

申请日：2019-12-11

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Rajasimman Madhivanan ,  Heidi Christine Schubert ,  Chang Young Kim ,  Madan Jayaprakasam ,  Madhav Achar

IPC: G01C21/32 ,  G01C21/30 ,  G01C21/20 ,  B60W60/00 ,  G05D1/00

Abstract: An autonomous mobile device (AMD) uses sensors to explore a physical space and determine a map indicating the locations of obstacles. As data is later acquired, the map may be updated, resulting in changes to previously mapped obstacle positions. Navigability tests determine if a path can be found between a current location and a previously visited location. A failure to find a path may result in exploration of an area that includes the previously visited location. Submaps may be produced by the AMD as it moves through the physical space. An accuracy score of a selected submap is determined by comparing the selected submap with a partial global map created using submaps other than the selected submap. If the accuracy score is less than a threshold value, the selected submap may be discarded and an area in the physical space associated with the selected submap may be re-explored.