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公开(公告)号：US11582576B2
公开(公告)日：2023-02-14
申请号：US16147484
申请日：2018-09-28
Applicant: Apple Inc.
Inventor： Jahshan Bhatti , Brian Stephen Smith , Wei Kong
Abstract: Embodiments are disclosed for a feature-based simultaneous localization and mapping (SLAM) system and method that generates radio maps for environments that are not accessible for surveying. More accurate radio maps are generated for an unsurveyed environment by determining a best estimate of a mobile device state from harvested traced data that maximizes a posterior probability of the mobile device state given measurements, landmarks and loop constraints.
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公开(公告)号：US10477609B2
公开(公告)日：2019-11-12
申请号：US15710577
申请日：2017-09-20
Applicant: Apple Inc.
Inventor： Chun-Yuan Yang , Darin Tay , Wei Kong
Abstract: A method comprising: receiving a harvest trace from a mobile device, the harvest trace including a plurality of location fixes each corresponding to a location at a venue, each location fix associated with data including one or more RSSI measurements of one or more wireless signals received from each of a plurality of wireless access points positioned at the venue, the plurality of location fixes including at least two location fixes that have a positional relationship with each other; comparing the data associated with one of the location fixes with data associated with a reference point identified in a radio map of the venue; and updating the radio map of the venue by updating the data associated with the reference point based on the data associated with the one of the location fixes.
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公开(公告)号：US10979854B2
公开(公告)日：2021-04-13
申请号：US15710568
申请日：2017-09-20
Applicant: Apple Inc.
Inventor： Wei Kong , Robert Mayor , Chun-Yuan Yang , Darin Tay
Abstract: A method comprising: receiving a radio map of an indoor venue using survey data collected by a survey device positioned throughout the venue, the radio map including a boundary; obtaining harvest data that correspond to locations that are outside of the boundary; filtering the harvest data; and extending the radio map using the survey data and the filtered harvest data, wherein the extended radio map is defined at least in part by an extension of the boundary.
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公开(公告)号：US20180352585A1
公开(公告)日：2018-12-06
申请号：US15710577
申请日：2017-09-20
Applicant: Apple Inc.
Inventor： Chun-Yuan Yang , Darin Tay , Wei Kong
Abstract: A method comprising: receiving a harvest trace from a mobile device, the harvest trace including a plurality of location fixes each corresponding to a location at a venue, each location fix associated with data including one or more RSSI measurements of one or more wireless signals received from each of a plurality of wireless access points positioned at the venue, the plurality of location fixes including at least two location fixes that have a positional relationship with each other; comparing the data associated with one of the location fixes with data associated with a reference point identified in a radio map of the venue; and updating the radio map of the venue by updating the data associated with the reference point based on the data associated with the one of the location fixes.
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Patent Agency Ranking
公开(公告)号：US11751162B2
公开(公告)日：2023-09-05
申请号：US17351900
申请日：2021-06-18
Applicant: Apple Inc.
Inventor： Brian S. Smith , Robert W. Mayor , Wei Kong , Lei Wang
IPC: H04W4/02 , H04W64/00 , H04W48/16 , H04W84/12 , H04B17/318
CPC classification number: H04W64/003 , H04B17/318 , H04W4/02 , H04W48/16 , H04W64/00 , H04W84/12
Abstract: Described herein are techniques to enable a mobile device to determine a Z-axis coordinate based on altitudes associated with Wi-Fi access points detected in a Wi-Fi scan by the mobile device. One embodiment provides for an electronic device configured to compute a weighted average of Z-axis coordinates associated with detected Wi-Fi access points and determine a Z-axis coordinate for the electronic device based on the weighted average.
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公开(公告)号：US11690041B2
公开(公告)日：2023-06-27
申请号：US17163159
申请日：2021-01-29
Applicant: Apple Inc.
Inventor： Brian S. Smith , Robert W. Mayor , Wei Kong
IPC: H04W64/00 , H04W4/02 , H04W48/16 , H04W84/12 , H04B17/318
CPC classification number: H04W64/003 , H04B17/318 , H04W4/02 , H04W48/16 , H04W64/00 , H04W84/12
Abstract: Described herein are techniques to enable a mobile device to determine a Z-axis coordinate based on altitudes associated with Wi-Fi access points detected in a Wi-Fi scan by the mobile device. One embodiment provides for an electronic device configured to compute a weighted average of Z-axis coordinates associated with detected Wi-Fi access points and determine a Z-axis coordinate for the electronic device based on the weighted average.
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公开(公告)号：US20210400618A1
公开(公告)日：2021-12-23
申请号：US17163159
申请日：2021-01-29
Applicant: Apple Inc.
Inventor： Brian S. Smith , Robert W. Mayor , Wei Kong
Abstract: Described herein are techniques to enable a mobile device to determine a Z-axis coordinate based on altitudes associated with Wi-Fi access points detected in a Wi-Fi scan by the mobile device. One embodiment provides for an electronic device configured to compute a weighted average of Z-axis coordinates associated with detected Wi-Fi access points and determine a Z-axis coordinate for the electronic device based on the weighted average.
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公开(公告)号：US20210400615A1
公开(公告)日：2021-12-23
申请号：US17351900
申请日：2021-06-18
Applicant: Apple Inc.
Inventor： Brian S. Smith , Robert W. Mayor , Wei Kong , Lei Wang
IPC: H04W64/00 , H04B17/318
Abstract: Described herein are techniques to enable a mobile device to determine a Z-axis coordinate based on altitudes associated with Wi-Fi access points detected in a Wi-Fi scan by the mobile device. One embodiment provides for an electronic device configured to compute a weighted average of Z-axis coordinates associated with detected Wi-Fi access points and determine a Z-axis coordinate for the electronic device based on the weighted average.
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公开(公告)号：US20180352379A1
公开(公告)日：2018-12-06
申请号：US15710568
申请日：2017-09-20
Applicant: Apple Inc.
Inventor： Wei Kong , Robert Mayor , Chun-Yuan Yang , Darin Tay
Abstract: A method comprising: receiving a radio map of an indoor venue using survey data collected by a survey device positioned throughout the venue, the radio map including a boundary; obtaining harvest data that correspond to locations that are outside of the boundary; filtering the harvest data; and extending the radio map using the survey data and the filtered harvest data, wherein the extended radio map is defined at least in part by an extension of the boundary.
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