Power-efficient hand tracking with time-of-flight sensor
US12066545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2021 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Dec 31, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0325
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Techniques are disclosed for operating a time-of-flight (TOF) sensor. The TOF may be operated in a low power mode by repeatedly performing a low power mode sequence, which may include performing a depth frame by emitting light pulses, detecting reflected light pulses, and computing a depth map based on the detected reflected light pulses. Performing the low power mode sequence may also include performing an amplitude frame at least one time by emitting a light pulse, detecting a reflected light pulse, and computing an amplitude map based on the detected reflected light pulse. In response to determining that an activation condition is satisfied, the TOF may be switched to operate in a high accuracy mode by repeatedly performing a high accuracy mode sequence, which may include performing the depth frame multiple times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.