Face detection circuit
AssigneeMicrosoft Technology Licensing, LLC
InventorsMatthew R. TUBBS, Ryan HARADEN, Rob SHEARER
Life of this patent
Estimating the term…
Abstract
This document relates to power consumption of computing devices. One example is a face detection circuit that includes a camera interface, a processing component, and a power management interface. The camera interface can be configured to communicate with a camera. The processing component can be configured to instruct the camera to provide image data at multiple levels of resolution, and perform multiple stages of analysis on the image data obtained from the camera to detect the presence of a face in the image data. The power management interface can be configured to output an indication when the face is detected in the image data.
Claims20
A face detection circuit comprising:
- a camera interface configured to communicate with a camera;
- a processing component configured to:
- instruct the camera to provide image data at multiple levels of resolution, and
- perform multiple stages of analysis on the image data obtained from the camera to detect the presence of a face in the image data;
- and
- a power management interface configured to output an indication when the face is detected in the image data.
A computing device comprising:
- a processing unit;
- a camera configured to capture image data;
- and
- a face detection circuit configured to:
- analyze the image data to detect the presence of a face;
- and
- responsive to detection of the face, output a signal that changes a power consumption state of the processing unit.
A method comprising:
- detecting a face in the vicinity of a computing device using a first circuit of the computing device that is powered by a first voltage domain;
- and
- activating a second circuit of the computing device responsive to detecting the face, the second circuit being powered by a second voltage domain.
Dependencies are inferred from the claim text.