Receiver, sender, method for retrieving an additional datum from a signal and method for transmitting a datum and an additional datum in a signal
A receiver includes a receiver circuit to receive a first transition in a first direction, a second transition in a second, different direction after the first transition and a third transition in the first transition after the second transition of a signal. A first time period between the first and third transitions is indicative of a datum to be received. The receiver circuit is also configured to determine a second time period between the first transition and a second transition and to determine an additional datum to be received based at least on the determined second time period between the first and second transitions. Using the determined second time period allows for more information to be received in a reliable manner.
1. A receiver, comprising:
a receiver circuit configured to receive a message comprising a plurality of nibbles,
wherein at least one of the nibbles comprises a signal waveform comprising a first transition in a first direction, a second transition after the first transition in a second, different direction, and a third transition after the second transition in the first direction of a signal, wherein the receiver circuit is configured to
determine a datum associated with the at least one of the nibbles of the received message based at least in part on a first time period between the first transition and the third transition, wherein the receiver circuit is further configured to
determine an additional datum associated with the at least one of the nibbles of the received message based at least in part on a second time period between the first transition and the second transition,
wherein the first time period is one of to a plurality of different available values and is indicative of the datum, and
wherein the second time period is one of a plurality of different available values and is indicative of the additional datum.
2. The receiver according to claim 1 , wherein the receiver circuit is configured to determine the first transition and the third transition as transitions from a common predefined first signal level to a common predefined second signal level, wherein the common predefined first signal level is greater than the common predefined second signal level, or the common predefined first signal level is less than the common predefined second signal level.
3. The receiver according to claim 2 , wherein the receiver circuit is configured to determine the second time period being shorter than a minimum period of time after the first transition for a transition to the first level according to a single-edge nibble transmission (SENT) specification or a short pulse width modulation (PWM) codes (SPC) specification for transmitting the datum.
4. The receiver according to claim 2 , wherein the receiver circuit is configured to determine the second time period based on the second transition to an intermediate signal level between the common predefined first signal level and the common predefined second signal level.
5. The receiver according to claim 1 , wherein the receiver circuit is configured to determine the second time period between the first and second transitions based on an amplitude of the second transition, and wherein the receiver circuit is configured to determine the additional datum based on at least two different amplitudes of the second transition.
6. The receiver according to claim 1 , wherein the receiver circuit is configured to determine the second time period between the first and second transitions based on the second transition always comprising the same amplitude.
7. The receiver according to claim 1 , wherein the receiver circuit is configured to determine the datum based on a size of a quantization step of the first time period between the first and third transitions being smaller than or equal to a size of a quantization step of the second time period between the first and second transitions concerning the additional datum.
8. A sender, comprising:
a sender circuit configured to
determine, based on a datum to be transmitted, a first time period between a first transition in a first direction ad a third transition in the first direction of a signal portion associated with a single nibble to be generated;
wherein the sender circuit is configured to
determine, based on an additional datum to be transmitted, a second time period between the first transition and a second transition in a second, different direction of the signal portion, when the additional datum is different from a default value;
wherein the first time period is one of a plurality of different available values and is indicative of the datum;
wherein the second time period is one of a plurality of different available values and is indicative of the additional datum; and
wherein the sender circuit is further configured to generate the signal portion comprising the first transition in the first direction, the second transition after the first transition in the second direction, and the third transition after the second transition in the first direction based on the determined first and second time periods.
9. The sender according to claim 8 , wherein the sender circuit is configured to generate the signal comprising the first and third transitions as transitions from a common predefined first signal level to a common predefined second level, wherein the common predefined first signal level is greater than the common predefined second signal level, the common predefined first signal level is less than the common predefined second signal level.
10. The sender according to claim 9 , wherein the sender circuit is configured to determine the second time period by modifying a predetermined second time period to be shorter than a minimum period of time after the first transition for a transition to the first level according to a single-edge nibble transmission (SENT) specification or a short pulse width modulation (PWM) codes (SPC) specification for transmitting the datum, when the additional datum indicates the determined second time period being shorter than the minimum time.
11. The sender according to claim 9 , wherein the sender circuit is configured to generate the signal portion comprising the second transition to an intermediate signal level between the common predefined first signal level and the common predefined second signal level.
12. The sender according to claim 8 , wherein the sender circuit is configured to further determine an amplitude for the second transition based on the additional datum from at least two different amplitudes for the second transition, and wherein the sender circuit is configured to generate the second transition of the signal portion with the determined amplitude for the second transition.
13. The sender according to claim 8 , wherein the sender circuit is configured to generate the second transition always comprising the same amplitude.
14. The sender according to claim 8 , wherein the first time period is based on a substantive content of the datum.
15. The sender according to claim 8 , wherein the sender circuit is configured to determine the first time period between the first and third transitions for the datum based on a size of a quantization step being smaller than or equal to a size of a quantization step of the second time period between the first and second transitions concerning the additional datum.
16. A method for retrieving a datum and an additional datum from a single nibble portion of a signal, the method comprising:
receiving a first transition of the signal portion in a first direction, a second transition of the signal portion after the first transition in a second, different direction and a third transition of the signal portion after the second transition in the first direction of the signal portion, wherein a first time period between the first transition and the third transition of the signal portion is at least partially indicative of the datum to be received, and wherein the first time period is one of a plurality of different available values;
determining a second time period between the first transition and the second transition of the signal portion, wherein the second time period is one of a plurality of different available values; and
determining the additional datum to be received based at least on the determined second time period.
17. A method for transmitting a datum and an additional datum in a single nibble portion of a signal, the method comprising:
determining, based on the datum, a first time period between a first transition of the signal portion in a first direction and a third transition of the signal portion in the first direction, wherein the first time period is one of a plurality of different available values;
determining, based on the additional datum, a second time period between the first transition of the signal portion and a second transition of the signal portion in a second, different direction, wherein the additional datum is different from a default value, and wherein the second time period is one of a plurality of different available values; and
generating the signal portion comprising the first transition in the first direction, the second transition after the first transition in the second direction, and the third transition after the second transition in the first direction based on the determined first and second time periods.
18. The method of claim 17 , wherein determining the second time period comprises modifying a predetermined second time period based on the additional datum.
19. The method of claim 16 , wherein the first transition and the third transition are transitions from a common predefined first signal level to a common predefined second signal level, wherein the common predefined first signal level is different than the common predefined second signal level, and wherein the second transition is based on a transition from the common predefined second signal level to an intermediate signal level, and wherein the intermediate signal level is between the common predefined first and second signal levels.
20. The method of claim 17 , wherein the first transition and the third transition are transitions from a common predefined first signal level to a common predefined second signal level, wherein the common predefined first signal level is different than the common predefined second signal level, and wherein the second transition is based on a transition from the common predefined second signal level to an intermediate signal level, and wherein the intermediate signal level is between the common predefined first and second signal levels.