Method and apparatus for data communication between a base station and a transponder

• US 8,577,295 B2
• Filed: 08/27/2012
• Issued: 11/05/2013
• Est. Priority Date: 04/14/2004
• Status: Active Grant

• Current Assignee: Atmel Corporation (Microchip Technology Incorporated)
• Original Assignee: Atmel Corporation (Microchip Technology Incorporated)
• Inventors: Friedrich, Ulrich
• Primary Examiner(s): HANNON, CHRISTIAN A
• Application Number:
  US13/595,875
• Publication Number:
  US 20120320797A1
• Time in Patent Office: 435 Days
• Field of Search: 455 411- 413, 455/208, 370/395.62, 340 101- 1052
• US Class Current: 455/41.2
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Abstract

In certain embodiments, a transponder comprises a transceiver configured to receive a forward link having a forward-link header comprising at least one symbol for configuring a setting of the transponder. The transponder may be configured to transmit a return link having a return-link header comprising information based on one or more characteristics of the transponder, and to receive a modified subsequent symbol of the forward-link header. The modified subsequent symbol of the forward link header generated by analyzing the return-link header to determine adjusted information for configuring the setting of the transponder and modifying the subsequent symbol of the forward-link header in accordance with the adjusted information for configuring the setting of the transponder.

Claims

1. A method comprising:

receiving at a transponder a forward link having a forward-link header comprising at least one symbol for configuring a setting of the transponder;

transmitting from the transponder a return link having a return-link header comprising information based on one or more characteristics of the transponder; and

receiving at the transponder a modified subsequent symbol of the forward-link header, the modified subsequent symbol of the forward link header generated by;

analyzing the return-link header to determine adjusted information for configuring the setting of the transponder;

modifying the subsequent symbol of the forward-link header in accordance with the adjusted information for configuring the setting of the transponder.

2. The method of claim 1, wherein the one or more characteristics of the transponder comprise one or more of a resolution and a data transmission rate of the transponder.

3. The method of claim 1, wherein the one or more characteristics of the transponder comprise an operating mode of the transponder.

4. The method of claim 1, wherein the forward link specifies a reference time for one or more of defining a system clock and sets a data communication rate of the transponder.

5. The method of claim 1, wherein analyzing the return-link header comprises determining clock information of the transponder based on a reference mark.

6. The method of claim 1, wherein analyzing the return-link header comprises determining a time separation based on a reference mark.

7. The method of claim 1, wherein the forward link specifies a reference time for modulation by the transponder.

8. A transponder comprising:

a transceiver configured to;

receive a forward link having a forward-link header comprising at least one symbol for configuring a setting of the transponder;

transmit a return link having a return-link header comprising information based on one or more characteristics of the transponder; and

receive a modified subsequent symbol of the forward-link header, the modified subsequent symbol of the forward link header generated by;

analyzing the return-link header to determine adjusted information for configuring the setting of the transponder;

modifying the subsequent symbol of the forward-link header in accordance with the adjusted information for configuring the setting of the transponder.

9. The transponder of claim 8, wherein the one or more characteristics of the transponder comprise one or more of a resolution and a data transmission rate of the transponder.

10. The transponder of claim 8, wherein the one or more characteristics of the transponder comprise an operating mode of the transponder.

11. The transponder of claim 8, wherein the forward link specifies a reference time for one or more of defining a system clock and sets a data communication rate of the transponder.

12. The transponder of claim 8, wherein analyzing the return-link header comprises determining clock information of the transponder based on a reference mark.

13. The transponder of claim 8, wherein analyzing the return-link header comprises determining a time separation based on a reference mark.

14. A circuit configured to:

receive at a transponder a forward link having a forward-link header comprising at least one symbol for configuring a setting of the transponder;

transmit from the transponder a return link having a return-link header comprising information based on one or more characteristics of the transponder; and

receive at the transponder a modified subsequent symbol of the forward-link header, the modified subsequent symbol of the forward link header generated by;

analyzing the return-link header to determine adjusted information for configuring the setting of the transponder;

modifying the subsequent symbol of the forward-link header in accordance with the adjusted information for configuring the setting of the transponder.

15. The circuit of claim 14, wherein the one or more characteristics of the transponder comprise one or more of a resolution and a data transmission rate of the transponder.

16. The circuit of claim 14, wherein the one or more characteristics of the transponder comprise an operating mode of the transponder.

17. The circuit of claim 14, wherein the forward link specifies a reference time for one or more of defining a system clock and sets a data communication rate of the transponder.

18. The circuit of claim 14, wherein analyzing the return-link header comprises determining clock information of the transponder based on a reference mark.

19. The circuit of claim 14, wherein analyzing the return-link header comprises determining a time separation based on a reference mark.

20. The circuit of claim 14, wherein the forward link specifies a reference time for modulation by the transponder.