John M Hahn

US Patent:

8396658, Mar 12, 2013

Filed:

Oct 6, 2009

Appl. No.:

12/588143

Inventors:

Bob Barcklay - Berkeley CA, US
John Hahn - San Francisco CA, US
Kevin Tsurutome - San Francisco CA, US

Assignee:

TeleCommunication Systems, Inc. - Annapolis MD

International Classification:

G01C 21/34

US Classification:

701417, 701412, 701416, 701491

Abstract:

The accuracy of a reverse geocode for a GPS fix in a mobile phone navigation device is improved significantly by considering together the user's last known location on an original route, the elapsed time between the last known location on the original route and the latest GPS fix, and the likelihood that the user could have traveled from the last known location on the original route to one of numerous candidate locations (generated from the reverse geocode) in the elapsed time. The navigation server relies only on a GPS fix, timestamps, and a back-end routing database to provide improved or superior accuracy of reverse geocoding a GPS fix (selection of a point on a road) when a relevant user has deviated from the intended route. The reverse geocoding allows for accurate and functional re-routing capabilities.

US Patent:

20090144247, Jun 4, 2009

Filed:

Nov 10, 2008

Appl. No.:

12/292041

Inventors:

Eric Wistrand - Antioch CA, US
Kevin Sebastian - Union City CA, US
John Hahn - San Francisco CA, US
Regan Gill - Berkeley CA, US
Kevin Tsurutome - San Francisco CA, US
Robert Barcklay - Berkeley CA, US

International Classification:

G06F 17/30

US Classification:

707 3, 707E17014

Abstract:

A persistent point-of-interest search is performed during map panning. A persistent search criteria module identifies a search criteria from a first mapping tile request and stores the search criteria in association with a particular wireless device. A mapping tile module identifies a neighboring mapping tile from a second mapping tile request and performs a point-of-interest search for the neighboring mapping tile with the stored search criteria. In this manner, a user need only enter a search criteria for a point-of-interest once, the point-of-interest being displayed automatically for subsequent map tiles displayed for the user.

US Patent:

20090265340, Oct 22, 2009

Filed:

Apr 3, 2009

Appl. No.:

12/385294

Inventors:

Bob Barcklay - Berkeley CA, US
John R. Hahn - San Francisco CA, US

International Classification:

G06F 17/30
G01C 21/26

US Classification:

707 5, 701208, 707E17109, 707E17018

Abstract:

A point-of-interest mapping search system that combines inexact string searches with a proximity search to provide an extremely high probability of return of a set of search results in an initial search response that are useful to the user. Relevance of any particular point-of-interest item in a combined inexact string/proximity is dependent on both (1) a quality of the name match; and (2) a proximity to the starting location (or other relevant search center point) of the POI search. The inexact string name/proximity search is performed efficiently by iteratively expanding a search radius around a given location, searching concentric circles of proximity until a specified target number of relevant results have been found. It is the combination of the use of a combined inexact string match together with a proximity search performed against a database of geo-referenced business names that provides advantageous results.

US Patent:

20130184986, Jul 18, 2013

Filed:

Mar 8, 2013

Appl. No.:

13/790197

Inventors:

Bob Barcklay - Berkeley CA, US
John Hahn - San Francisco CA, US
Kevin Tsurutome - San Francisco CA, US

International Classification:

G01C 21/34

US Classification:

701417

Abstract:

The accuracy of a reverse geocode for a GPS fix in a mobile phone navigation device is improved significantly by considering together the user's last known location on an original route, the elapsed time between the last known location on the original route and the latest GPS fix, and the likelihood that the user could have travelled from the last known location on the original route to one of numerous candidate locations (generated from the reverse geocode) in the elapsed time. The navigation server relies only on a GPS fix, timestamps, and a back-end routing database to provide improved or superior accuracy of reverse geocoding a GPS fix (selection of a point on a road) when a relevant user has deviated from the intended route. The reverse geocoding allows for accurate and functional re-routing capabilities.

US Patent:

20160169693, Jun 16, 2016

Filed:

Feb 24, 2016

Appl. No.:

15/052018

Inventors:

- Annapolis MD, US
John Hahn - San Francisco CA, US
Kevin Tsurutome - San Francisco CA, US

International Classification:

G01C 21/34

Abstract:

The accuracy of a reverse geocode for a GPS fix in a mobile phone navigation device is improved significantly by considering together the user's last known location on an original route, the elapsed time between the last known location on the original route and the latest GPS fix, and the likelihood that the user could have traveled from the last known location on the original route to one of numerous candidate locations (generated from the reverse geocode) in the elapsed time. The navigation server relies only on a GPS fix, timestamps, and a back-end routing database to provide improved or superior accuracy of reverse geocoding a GPS fix (selection of a point on a road) when a relevant user has deviated from the intended route. The reverse geocoding allows for accurate and functional re-routing capabilities.

US Patent:

20150025798, Jan 22, 2015

Filed:

Aug 15, 2014

Appl. No.:

14/460688

Inventors:

- Annapolis MD, US
John Hahn - San Francisco CA, US
Kevin Tsurutome - San Francisco CA, US

International Classification:

G01C 21/34
G01C 21/20
G01C 21/26

US Classification:

701491, 701526

Abstract:

The accuracy of a reverse geocode for a GPS fix in a mobile phone navigation device is improved significantly by considering together the user's last known location on an original route, the elapsed time between the last known location on the original route and the latest GPS fix, and the likelihood that the user could have travelled from the last known location on the original route to one of numerous candidate locations (generated from the reverse geocode) in the elapsed time. The navigation server relies only on a GPS fix, timestamps, and a back-end routing database to provide improved or superior accuracy of reverse geocoding a GPS fix (selection of a point on a road) when a relevant user has deviated from the intended route. The reverse geocoding allows for accurate and functional re-routing capabilities.