Patents
US 9843903 B2: Method and apparatus for mobile device localization
- Granted
- 2017-12-12
- Filed
- 2013-03-15 application 13841202
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Because GPS does not work indoors, mobile electronics devices that use GPS for activities do not work inside a building. An embodiment of the present invention uses ultrasonic tone generators in each room. The ultrasonic tone generators can be built into cameras or separate devices. Each device may emit a unique tone that has a high enough frequency that most people cannot hear the frequency or combination of frequencies. Using a built-in microphone on a mobile device, the incoming audio may be analyzed in the frequency domain to determine the loudest tone above the human hearing threshold. This tone may be mapped to a specific room that can then be sent to the mobile electronics device to perform any location-aware actions.
Source: PVGPATDIS, file of 2026-04-10 (ipg171212.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| PELCO, INC. 80 patents | US company or organization | Clovis, CA | PELCO, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| James G. Millar | Clovis, CA | 3 | PVGPATDIS, file of 2026-04-10 | |
| Barry Velasquez | Clovis, CA | 2 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H04W | Wireless communication networks | H04W4/021 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2020-08-05 | Release of security interest Release of security interests in patents | WELLS FARGO BANK, NATIONAL ASSOCIATION, A NATIONAL BANKING ASSOCIATION signed 2020-07-31 | PELCO, INC. CLOVIS, CA TRANSOM PELCO ACQUISITION, INC. (FORMERLY ZOOM ACQUISITIONCO, INC.) EL SEGUNDO, CA | 53415/1 | ECORSEXC, file of 2026-09-25 |
| 2019-05-29 | Security interest Security interest Security interest | PELCO, INC. signed 2019-05-24 ZOOM ACQUISITIONCO, INC. signed 2019-05-24 | WELLS FARGO BANK, NATIONAL ASSOCIATION SANTA MONICA, CA | 49314/16 | ECORSEXC, file of 2026-09-25 |
| 2013-11-05 | Assignment Assignment of assignor's interest | MILLAR, JAMES G. signed 2013-10-23 VELASQUEZ, BARRY JON signed 2013-10-23 | PELCO, INC. CLOVIS, CA | 31548/302 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.