Information processing apparatus, control method thereof, and storage medium for controlling power state shifting based on amplitudes of received sound waves
US10298796B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2017 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Jul 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0094
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information processing apparatus including: a sound wave sensor that outputs a sound wave and receives a reflected wave of the output sound wave; a control unit configured to measure an amplitude of a sound wave, at predetermined time intervals, which is received by the sound wave sensor after the sound wave sensor outputs a sound wave; and a power control unit configured to shift the information processing apparatus from a first power state into a second power state where power consumption is larger than that in the first power state, on a basis that the amplitude of the sound wave measured by the control unit is larger than or equal to a threshold value, wherein in a case where a number of times amplitude of a sound wave measured by the control unit is larger than or equal to the threshold value during a predetermined period of time is larger than or equal to a predetermined number of times, the control unit maintains the power state of the information processing apparatus in the first power state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.