Granted Patent B2

US 7,604,167 · App. 11/019,976 · Granted Oct 20, 2009

Abstract

Claims (35)

1. A wireless display tag comprising:

an active transceiver coupled to an antenna;

a backscatter transceiver, separate from the active transceiver, coupled to the antenna, the combination of the active transceiver and the backscatter transceiver allowing for transmission of signals of varying power ranges from the wireless display tag to reduce the power consumption of the wireless display tag;

a battery;

a solar cell for charging the battery or powering the wireless display tag;

digital logic having a transmitter interface and a receiver interface for coupling to the active transceiver and the backscatter transceiver and adapted to control communications; and

an analog-circuit coupled to the digital logic, each of which is coupled to the active transceiver and the backscatter transceiver, wherein the digital logic is operative to selectively switch between using the active transceiver and the backscatter transceiver thereby reducing power consumption of the wireless display tag;

wherein the wireless display tag is adapted to fit within the C channel of a shelf edge.

2. A wireless display tag comprising:

an analog circuit unit;

a digital circuit unit;

a backscatter transceiver unit coupled to the antenna and also coupled to the each of the analog circuit unit and the digital circuit unit;

an active transceiver unit, separate from the backscatter transceiver, coupled to the antenna, wherein the digital circuit unit is selectively switched between causing the backscatter transceiver unit and the active transceiver unit to be operational thereby reducing power consumption of the wireless display tag;

wherein the digital circuit unit includes a transmitter interface and a receiver interface;

wherein a transmitter portion of the backscatter transceiver is coupled to the transmitter interface of the digital logic unit and a receiver portion of the backscatter transceiver is coupled to the receiver interface of the digital logic unit.

3. A wireless display tag comprising:

an active transceiver coupled to an antenna;

a backscatter transceiver, separate from the active transceiver, coupled to the antenna, the combination of the active transceiver and the backscatter transceiver allowing for transmission of signals of varying power ranges from the wireless display tag to reduce the power consumption of the wireless display tag; and

digital logic for selectively switching the operation of the wireless display tag from active mode using the active transceiver to backscatter mode using the backscatter transceiver, thereby reducing power consumption of the wireless display tag;

wherein the wireless display tag is in communication with an access point using radio communication.

4. A wireless display tag, as recited in claim 3 , wherein the wireless display tag is deployed in an amplitude modulation (AM) environment.

5. A wireless display tag, as recited in claim 3 , wherein the wireless display tag is deployed in a frequency modulation (FM) environment.

6. A wireless display tag, as recited in claim 3 , wherein the wireless display tag includes a receiver for receiving information from the access point and a transmitter for transmitting information to the access point.

7. A wireless display tag, as recited in claim 3 , wherein the receiver takes the incoming radio information from the antenna and processes the information in a manner that the digital logic can use and the transmitter 34 takes the information from the digital logic and processes the information so that the information can be sent, wirelessly, via the antenna using radio waves.

8. A 2-way radio communication system comprising:

at least one access point;

at least one wireless display tag in communication with the access point and including,

an active transceiver coupled to an antenna;

a backscatter transceiver, separate from the active transceiver, coupled to the antenna, the combination of the active transceiver and the backscatter transceiver allowing for transmission of signals of varying power ranges from the wireless display tag to reduce the power consumption of the wireless display tag; and

digital logic for selectively switching the operation of the wireless display tag from active mode using the active transceiver to backscatter mode using the backscatter transceiver, thereby reducing power consumption of the wireless display tag;

wherein the wireless display tag is in communication with an access point using radio communication;

wherein the wireless display tag includes a receiver for receiving information from the access point and a transmitter for transmitting information to the access point;

wherein the receiver takes the incoming radio information from the antenna and processes the information in a manner that the digital logic can use and the transmitter takes the information from the digital logic and processes the information so that the information can be sent, wirelessly, via the antenna using radio waves.

9. A wireless display tag, as recited in claim 8 , wherein the wireless display tag is deployed in an amplitude modulation (AM) environment.

10. A wireless display tag, as recited in claim 8 , wherein the wireless display tag is deployed in a frequency modulation (FM) environment.

Assignments (8)