Deep sleep in an RFID tag
First Claim
1. A passive radio frequency identification tag comprising:
- an antenna;
a radio frequency interface coupled with the antenna; and
control logic that initiates a deep sleep state in response to an event, the deep sleep state comprising a non-responsive state that is independent of supplied power, and the control logic providing a following state entered upon conclusion of the non-responsive state, wherein communications initiate from the following state, and wherein the non-responsive state concludes in response to receipt of a wake command.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems and techniques to provide radio frequency identification tags including a non-responsive state, which is independent of supplied power, initiated in conjunction with a tag communications reset. In general, in one implementation, a passive radio frequency identification tag includes an antenna, a radio frequency interface coupled with the antenna, and control logic that initiates a deep sleep state in response an event, the deep sleep state including a non-responsive state that is independent of supplied power, and the control logic providing a following state entered upon conclusion of the non-responsive state, where communications initiate from the following state.
31 Citations
28 Claims
-
1. A passive radio frequency identification tag comprising:
-
an antenna;
a radio frequency interface coupled with the antenna; and
control logic that initiates a deep sleep state in response to an event, the deep sleep state comprising a non-responsive state that is independent of supplied power, and the control logic providing a following state entered upon conclusion of the non-responsive state, wherein communications initiate from the following state, and wherein the non-responsive state concludes in response to receipt of a wake command. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method comprising:
-
receiving power in a passive radio frequency identification tag;
receiving commands in a command structure in the passive radio frequency identification tag;
entering a deep sleep state in the passive radio frequency identification tag, the deep sleep state comprising a reset of the command structure and a non-responsive state that is independent of supplied power; and
leaving the deep sleep state in response to receipt of a wake command. - View Dependent Claims (16, 17, 18)
-
-
19. A system comprising:
-
a radio frequency identification (RFID) tag reader that sends commands including at least one sequence of associated commands used to identify an RFID tag on an article; and
multiple passive RFID tags, each tag being attached to an article and each tag comprising a radio frequency sub-system and control logic coupled with the radio frequency sub-system, wherein the control logic resets tag communications and initiates a non-responsive state in response to at least one event, the non-responsive state being independent of supplied power, and the control logic responds to a wake command but ignores other commands in the command sequence while the tag is in the non-responsive state, and the wake command response concludes the non-responsive state. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
-
-
27. A passive radio frequency identification tag comprising:
-
means for receiving power and commands in a command structure; and
means for entering a deep sleep state comprising a reset of the command structure and a non-responsive state that is independent of supplied power, wherein the non-responsive state concludes in response to receipt of a wake command. - View Dependent Claims (28)
-
Specification