Method and apparatus for controlling the status of a device

摘要

The status of a device is controlled by detecting (403) the presence of a user; changing the status of a device to a first state (405) if the presence of a user is detected within a first, predetermined zone; changing the status of the device to the second state (407) if the presence of a user is detected outside a second, predetermined zone, the first, predetermined zone being smaller than and being wholly contained within the second, predetermined zone; and maintaining (407) the current state of the device if the presence of a user is detected outside of the first, predetermined zone and within the second predetermined zone.

主权项

1. A method for controlling the status of a device, the method comprising the steps of:
detecting the presence of a user; changing the status of a device to a first state if the presence of the user is detected within a first, predetermined zone; changing the status of said device to a second state if the presence of the user is detected outside a second, predetermined zone, said first, predetermined zone being smaller than said second, predetermined zone and said first, predetermined zone being wholly contained within said second, predetermined zone maintaining the current state of said device if the presence of the user is detected outside of said first, predetermined zone and within said second predetermined zone; determining the speed of travel of the user detected within said second, predetermined zone or said first predetermined zone; and detecting the user as present within said second, predetermined zone or said first, predetermined zone if the determined speed of travel is below a predetermined threshold value.