System including reply signal that at least partially overlaps request

• US 8,519,819 B2
• Filed: 04/11/2012
• Issued: 08/27/2013
• Est. Priority Date: 08/14/2007
• Status: Active Grant

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: Scherr, Wolfgang
• Primary Examiner(s): Mehmood, Jennifer
• Assistant Examiner(s): POINT, RUFUS C
• Application Number:
  US13/444,023
• Publication Number:
  US 20120195389A1
• Time in Patent Office: 503 Days
• Field of Search: 340/539.1, 340/3.21, 340/10.3, 600/635, 235/492
• US Class Current: 340/3.21
• CPC Class Codes: H04L 25/4902 Pulse width modulation; Pulse position modulation
• CPC Class Codes: H04L 5/1484 operating bytewise
• CPC Class Codes: H04L 7/00 Arrangements for synchronising receiver with transmitter synchronisation of generators of electric oscillations or pulses H03L7/00
• CPC Class Codes: H04L 7/044 using a single bit, e.g. start stop bit
• CPC Class Codes: H04L 7/06 the synchronisation signals differing from the information signals in amplitude, polarity or frequency or length

Abstract

A system and method including a receiver and a transmitter. In one embodiment, the method includes transmitting a request signal including sensor measurement range information, and determining a sensor measurement range based on the request signal. A reply signal is transmitted from the transmitter to the receiver, the reply signal including a synchronization signal indicating a time base of the transmitter and data.

Claims

1. A method comprising:

transmitting a request signal that includes a sensor measurement range from a receiver to a transmitter;

determining at the transmitter the sensor measurement range included in the request signal;

providing at the transmitter that the transmitter is in the sensor measurement range; and

transmitting a reply signal from the transmitter to the receiver, the reply signal including a synchronization signal indicating a time base of the transmitter and data in the sensor measurement range.

2. The method according to claim 1, wherein the data of the reply signal includes nibbles.

3. The method according to claim 1, further comprising providing a length of the request signal based on the sensor measurement range.

4. A method comprising:

transmitting a request signal that includes a sensor identification coded into a length of a pulse in the request signal from a receiver to a transmitter, the sensor identification identifying a first sensor of a plurality of sensors;

determining at the transmitter the sensor identification based on the length of the pulse in the request signal; and

transmitting a reply signal from the transmitter to the receiver, the reply signal including a synchronization signal indicating a time base of the transmitter and data from a sensor identified by the sensor identification.

5. The method according to claim 4, wherein the data of the reply signal includes nibbles.

6. A controller comprising:

a circuit to transmit a request signal over a communication path, the request signal including a sensor identification coded into a length of a pulse in the request signal to identify a first sensor of a plurality of sensors; and

the controller to receive a reply signal including a synchronization signal indicating a time base and data from the first sensor identified by the sensor identification.

7. The controller according to claim 6, wherein the data includes nibbles.

8. The controller according to claim 6, wherein the controller is to obtain a time base based on a length of the synchronization signal.

9. The controller according to claim 6, wherein the controller is to provide the length of the pulse in the request signal based on a selection of the first sensor.

10. The controller according to claim 9, wherein the controller is to obtain a time base for the first sensor based on a length of the synchronization signal.

11. The controller according to claim 10, wherein the controller recovers the data by comparing a length of the data in the reply signal with the obtained time base.

12. A controller comprising:

a circuit to transmit a request signal over a communication path, the request signal including a sensor measurement range; and

the controller to receive a reply signal including a synchronization signal indicating a time base and data in the sensor measurement range.

13. The controller according to claim 12, wherein the data includes nibbles.

14. The controller according to claim 12, wherein the sensor measurement range is coded into a length of a pulse in the request signal.

15. The controller according to claim 12, wherein the controller is to obtain a time base based on a length of the synchronization signal.

16. The controller according to claim 12, wherein the controller is to transmit a request signal including a sensor identification to identify a first sensor of a plurality of sensors.

17. The controller according to claim 16, wherein the controller is to provide a length of the request signal based on a selection of the first sensor from a plurality of sensors.

18. The controller according to claim 17, wherein the controller is to obtain a time base for the first sensor based on a length of the synchronization signal.

19. The controller according to claim 18, wherein the controller recovers the data by comparing a length of the data in the reply signal with the time base.