Background Object Sensor
First Claim
1. An RFID reader, comprising:
- a transceiver configured to receive a first radio frequency signal reflected off at least one surface to provide baseline signal information;
the transceiver being further configured to receive a second radio frequency signal reflected off the at least one surface and an object to provide further signal information;
a comparator configured to compare the baseline signal information and the further signal information to provide a signal comparison; and
a processor configured to detect the presence of the object in accordance with the signal comparison.
5 Assignments
0 Petitions
Accused Products
Abstract
An RFD reader includes a transceiver configured to receive a first radio frequency signal reflected off at least one surface to provide baseline signal information and a second radio frequency signal reflected off the at least one surface and an object to provide further signal information. A comparator is configured to compare the baseline signal information and the further signal information to provide a signal comparison. A processor is configured to detect the presence of the object in accordance with the signal comparison. A determination is made whether the object is in motion in accordance with the signal comparison. The determination whether the object is in motion is made in accordance with a continuous fluctuation of the second radio frequency signal. A determination whether the object is no longer in motion is made in accordance with an ending of the continuous fluctuation of the second radio frequency signal.
-
Citations
20 Claims
-
1. An RFID reader, comprising:
-
a transceiver configured to receive a first radio frequency signal reflected off at least one surface to provide baseline signal information; the transceiver being further configured to receive a second radio frequency signal reflected off the at least one surface and an object to provide further signal information; a comparator configured to compare the baseline signal information and the further signal information to provide a signal comparison; and a processor configured to detect the presence of the object in accordance with the signal comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method for detecting the presence of an object having at least one surface in a monitored region in an RFID communication system, comprising:
-
receiving a first radio frequency signal reflected off the at least one surface to provide baseline signal information; receiving a second radio frequency signal reflected off the at least one surface and the object to provide further signal information; comparing the baseline signal information and the further signal information to provide a signal comparison; and detecting the presence of the object in accordance with the signal comparison. - View Dependent Claims (20)
-
Specification