Tire pressure monitoring system telegram with suppressed ID

1. A tire pressure monitoring system (TPMS) receiver comprising:

a storage unit configured to store transmitter identification values (IDs) associated with a plurality of tire pressure monitoring system (TPMS) transmitters, wherein each stored transmitter ID is associated with a respective TPMS transmitter;

a receiving unit configured to receive a transmitted tire pressure monitoring system (TPMS) telegram and a transmitted checksum calculated from the telegram and one of the transmitter IDs;

a calculating unit configured to calculate, on receipt of the telegram, a test checksum from the received telegram and one of the stored IDs;

a comparing unit configured to compare the test checksum with the received checksum; and

an identification unit configured to identify a source transmitter via a stored transmitter ID used to calculate the test checksum, in response to the comparing unit finding a match between the test checksum and the received checksum.

2. The TPMS receiver according to claim 1 , wherein the number of TPMS transmitters is equal to an integer value between 2 and 20 inclusive.

3. The TPMS receiver according to claim 2 , wherein the value equals 4.

4. The TPMS receiver according to claim 2 , wherein the value equals 5.

5. The TPMS receiver according to claim 1 , wherein the transmitter ID includes 32 bits.

6. The TPMS receiver according to claim 1 , wherein the checksum includes one of 8 bits and 16 bits.

7. The TPMS receiver according to claim 1 , wherein the checksum comprises a cyclic redundancy code (CRC) checksum.

8. A system for identifying which transmitter from a plurality of transmitters in a tire pressure monitoring system (TPMS) is a source transmitter for a tire pressure monitoring system (TPMS) telegram, the system comprising:

a TPMS receiver according to claim 1 ;

a second calculating unit configured to calculate a checksum from a TPMS telegram and a transmitter ID; and

a transmitting unit configured to transmit the TPMS telegram and the checksum.

9. A method of identifying which transmitter from a plurality of transmitters in a tire pressure monitoring system (TPMS) is a source transmitter of a TMPS telegram, the method comprising:

calculating a checksum from the TPMS telegram and a transmitter identification value (ID);

transmitting the TPMS telegram to a receiver;

transmitting the calculated checksum to the receiver;

calculating a test checksum from the transmitted TPMS telegram and a stored transmitter ID associated with one of the plurality of transmitters;

comparing the test checksum with the transmitted checksum; and

identifying the source transmitter via the stored transmitter ID used to calculate the test checksum in response to finding a match during the comparison between the test checksum and the transmitted checksum.

10. The method of claim 9 , wherein the calculating and comparing are repeated until a test checksum is found to match the transmitted checksum.

11. The method of claim 9 , wherein the number of TPMS transmitters is equal to an integer value between 2 and 20 inclusive.

12. The method of claim 11 , wherein the value equals 4.

13. The method of claim 11 , wherein the value equals 5.

14. The method of claim 9 , wherein the transmitter ID comprises 32 bits.

15. The method of claim 9 , wherein the checksum includes one of 8 bits and 16 bits.

16. The method of claim 9 , wherein the checksum comprises a cyclic redundancy code (CRC) checksum.