System and method of polarity reversal for reload detection

• US 20060128319A1
• Filed: 10/17/2005
• Published: 06/15/2006
• Est. Priority Date: 10/15/2004
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Proxim Wireless Corporation
• Inventors: Van de Water, Cor
• Granted Patent: US 7,668,572 B2
• Time in Patent Office: Days
• US Class Current: 455/73
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04W 52/0212 managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system and method to remotely activate a procedure, preferably to Reload, a transceiver unit powered with an Ethernet cable. The system and method includes a power source including circuitry to reverse the polarity of voltage for a desired amount of time to a detection circuit in the transceiver unit. Upon successful detection, a reload circuit preferably in the transceiver unit activates the Reload procedure in the transceiver unit.

Claims

1. A system for remotely triggering a function comprising:

a transceiver unit; and

a remote source configured to supply power to the transceiver unit, the remote source capable of reversing the polarity of power to the transceiver unit, wherein the transceiver unit activates a procedure when the polarity of power is reversed.

2. The system of claim 1 wherein the transceiver unit further comprises a detector circuit configured to detect the reversed polarity of power from the remote power source. (how can the transceiver activate a procedure when it does not have a detector?)

3. The system of claim 1 wherein the transceiver unit further comprises a circuit configured to activate a Reload procedure upon detecting the reversed polarity.

4. The system of claim 1 wherein the procedure is a Reload procedure in the transceiver unit

5. The system of claim 1 wherein the transceiver unit activates the procedure upon detecting the polarity reversal for a desired time duration.

6. The system of claim 1 wherein the transceiver unit activates the procedure upon detecting a plurality of polarity reversals in a time duration.

7. The system of claim 1 wherein the remote power source is coupled to the transceiver unit via an Ethernet cable, wherein the power does not interfere with data signals transmitted to the transceiver unit.

8. The system of claim 1 wherein the reversed polarity is provided to the transceiver unit for a threshold amount of time to activate the Reload procedure.

9. The system of claim 1 wherein the reversed polarity is provided to the transceiver unit over a threshold amount of time to activate a Reset procedure in the transceiver unit.

10. The system of claim 1 wherein the remote source further comprises a power injector having a local switch to reverse polarity.

11. The system of claim 1 wherein the transceiver unit further comprises an optocoupler to detect the polarity reversal and activate the procedure.

12. A transceiver unit powered via an Ethernet cable comprising:

a detector circuit adapted to detect a reversal in polarity of power via the Ethernet cable from a remote power source; and

a reload circuit coupled to the detector circuit, wherein the reload circuit activates a Reload procedure in the transceiver unit upon the detector circuit detecting the reversed polarity of power.

13. The transceiver unit of claim 12 wherein the remote power source is coupled to the transceiver unit via an Ethernet cable, wherein the power does not interfere with data signals transmitted to the transceiver unit.

14. The transceiver unit of claim 12 wherein the reversed polarity is provided to the transceiver unit for a threshold amount of time to activate the Reload procedure.

15. The transceiver unit of claim 12 wherein the reversed polarity is provided to the transceiver unit over a threshold amount of time to activate a Reset procedure in the transceiver unit.

16. The transceiver unit of claim 12 wherein the remote source further comprises a power injector having a Reload actuator.

17. The transceiver unit of claim 12 wherein the detect and reload circuits comprise an optocoupler.

18. A power source component adapted to be coupled to a transceiver unit remotely located from the power source, the power source comprising:

a circuit adapted to receive a voltage and output the voltage to a remotely located transceiver unit; and

a local switch coupled to the circuit, wherein the circuit reverses a polarity of the output voltage for a desired amount of time upon the local switch being activated, the circuit outputting the reversed polarity voltage to activate a Reload procedure in the transceiver unit.

19. The power source component of claim 18 wherein the power source unit is coupled to the transceiver unit via an Ethernet cable, wherein the power does not interfere with data signals transmitted to the transceiver unit.

20. The power source component of claim 18 wherein the reversed polarity is provided to the transceiver unit over the desired amount of time to activate a Reset procedure in the transceiver unit.

21. The power source component of claim 18 further comprising at least one transistor configured to reverse the polarity of voltage output.

22. The power source component of claim 18 where the local switch reverses the polarity of voltage output.

23. A method for remotely triggering a function at a transceiver unit comprising:

supplying a voltage to a remote transceiver unit over an Ethernet cable;

reversing a polarity of the voltage supplied to the remote transceiver unit for a desired amount of time; and

activating a reload procedure at the transceiver unit upon detecting the reversed voltage.

24. A system for remotely triggering a function in a transceiver unit comprising:

means for supplying a voltage to a remote transceiver unit over an Ethernet cable;

means reversing a polarity of the voltage supplied to the remote transceiver unit for a desired amount of time; and

means for activating a reload procedure at the transceiver unit upon detecting the reversed voltage.