	US 11,856,256 B1
	Presence-detection modes for display devices
Zheda Li, Mountain View, CA (US); Vivek Yenamandra, Milpitas, CA (US); Aditya V Padaki, Richardson, TX (US); F N U Rohit Kumar, San Jose, CA (US); Morris Yuanhsiang Hsu, Mountain View, CA (US); and Sai Prashanth Chinnapalli, Dublin, CA (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Mar. 30, 2022, as Appl. No. 17/709,198.
Int. Cl. H04N 21/442 (2011.01); H04N 21/443 (2011.01)

CPC H04N 21/44218 (2013.01) [H04N 21/4436 (2013.01)]

19 Claims

1. A television comprising:

a radar sensor configured to:

while the television is operating in a standby-passive mode, generate sensor data;

analyze the sensor data to detect a possible object; and

determine that the possible object is located within a threshold distance to the television;

a display;

one or more processors; and

one or more computer-readable media storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:

causing the television to operate in the standby-passive mode by at least deactivating the display;

causing the radar sensor to operate in a first presence-detection mode, wherein the radar sensor is configured to detect the possible object while operating in the first presence-detection mode by:

analyzing the first sensor data using a first presence-detection technique to determine a magnitude of a frequency associated with a signal;

determining, based on the first sensor data, a peak magnitude associated with the magnitude;

determining, based on the first sensor data, that the peak magnitude satisfies a threshold magnitude; and

detecting a possible object based at least in part on the peak magnitude satisfying the threshold magnitude;

receiving, from the radar sensor, first output data indicating that the radar sensor detected the possible object;

based at least in part on receiving the first output data, causing the television to operate in a standby-active mode by at least activating a processing component;

while the television is operating in the standby-active mode:

receiving second output data from the radar sensor, the second output data indicating at least a distance to the possible object; and

analyzing, using the processing component, the second output data to verify that the possible object is an actual object;

based at least in part on verifying that the possible object is the actual object, causing the television to operate in an ambient mode by at least:

activating the display; and

causing the display to present a user interface;

while the television is operating in the ambient mode, detecting an interaction associated with the actual object; and

based at least in part on detecting the interaction, causing the television to operate in an active mode by at least:

receiving video data from one or more sources; and

causing the display to present content represented by the video data.