Systems and methods for low-power single-wire communication

Patent metadata

Field	Value
Publication number	US-10263765-B2
Application number	US-201715807854-A
Country	US
Kind code	B2
Filing date	Nov 9, 2017
Priority date	Nov 9, 2016
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

Systems and methods for low-power single-wire communication are provided. In some embodiments, a method of operation of a transmitter to transmit a data word to a receiver using low-power single-wire communication includes receiving the data word to be transmitted to the receiver. The method also includes encoding the data word to be transmitted in a Pulsed Index Communication (PIC) format to produce a PIC data word and transmitting the PIC data word to the receiver. In this way, the transmitter may be able to transmit an increased amount of data while maintaining a simple communication protocol that uses low power and does not require a Clock-Data Recovery circuit.

First claim

What is claimed is:

1. A method of operation of a transmitter to transmit a data word to a receiver using low-power single-wire communication, the method comprising:
receiving the data word to be transmitted to the receiver;
encoding the data word to be transmitted in a Pulsed Index Communication (PIC) format to produce a PIC data word, by:
determining a set of ON indexes which are the indexes of the data word that contain a logical True value; and
generating a number of pulses corresponding to a value of the index for each index in the set of ON indexes to produce the PIC data word; and

transmitting the PIC data word to the receiver.

2. The method of claim 1 wherein encoding the data word to be transmitted in the PIC format to produce the PIC data word further comprises:
determining whether to invert the ON indexes in the data word prior to determining the set of ON indexes which are the indexes of the data word that contain the logical True value.

3. The method of claim 2 wherein determining whether to invert the ON indexes in the data word comprises determining that inverting the ON indexes in the data word results in fewer pulses to transmit than if the data word were not inverted.

4. The method of claim 3 wherein encoding the data word to be transmitted in the PIC format to produce the PIC data word further comprises:
determining whether to reverse the ON indexes in the data word prior to determining the set of ON indexes which are the indexes of the data word that contain the logical True value.

5. The method of claim 4 wherein determining whether to reverse the ON indexes in the data word comprises determining that reversing the ON indexes in the data word results in fewer pulses to transmit than if the data word were not inverted.

6. The method of claim 5 wherein transmitting the PIC data word to the receiver further comprises:
transmitting a flag to the receiver that indicates at least one of the group comprising: the data word is inverted, the data word is not inverted, the data word is reversed, and the data word is not reversed.

7. The method of claim 6 wherein transmitting the flag to the receiver comprises:
transmitting a number of pulses that indicates a value of the flag that indicates at least one of the group comprising: the data word is inverted, the data word is not inverted, the data word is reversed, and the data word is not reversed.

8. A method of operation of a receiver to receive a data word from a transmitter using low-power single-wire communication, the method comprising:
receiving a Pulsed Index Communication (PIC) data word from the transmitter comprising a number of received pulses; and
decoding the PIC data word using a PIC format to produce the data word, by:
determining a value of an index for each index in a set of ON indexes from the number of received pulses; and
producing the data word comprising a logical True value for each ON index of the set of ON indexes.

9. The method of claim 8 wherein decoding the PIC data word received in the PIC format to produce the data word further comprises:
counting the number of received pulses using rising edge detection.

10. The method of claim 9 wherein decoding the PIC data word received in the PIC format to produce the data word further comprises:
determining whether to invert the ON indexes to produce the data word.

11. The method of claim 10 wherein determining whether to invert the ON indexes in the data word comprises determining that inverting the ON indexes in the data word results in fewer pulses than if the data word were not inverted.

12. The method of claim 11 wherein decoding the PIC data word received in the PIC format to produce the data word further comprises:
determining whether to reverse the ON indexes to produce the data word.

13. The method of claim 12 wherein determining whether to reverse the ON indexes in the data word comprises determining that reversing the ON indexes in the data word results in fewer pulses than if the data word were not inverted.

14. The method of claim 13 wherein receiving the PIC data word from the transmitter further comprises:
receiving a flag from the transmitter that indicates at least one of the group comprising: the data word is inverted, the data word is not inverted, the data word is reversed, and the data word is not reversed.

15. The method of claim 14 wherein receiving the flag from the transmitter comprises:
receiving a number of pulses that indicates a value of the flag that indicates at least one of the group comprising: the data word is inverted, the data word is not inverted, the data word is reversed, and the data word is not reversed.

16. A transmitter for transmitting a data word to a receiver using low-power single-wire communication, the transmitter comprising:
at least one processor; and
memory comprising instructions executable by the at least one processor whereby the transmitter is operable to:
receive the data word to be transmitted to the receiver;
encode the data word to be transmitted in a Pulsed Index Communication (PIC) format to produce a PIC data word by:
determining a set of ON indexes which are the indexes of the data word that contain a logical True value; and
generating a number of pulses corresponding to a value of the index for each index in the set of ON indexes to produce the PIC data word; and

transmit the PIC data word to the receiver.

17. The transmitter of claim 16 wherein being operable to encode the data word to be transmitted in the PIC format to produce the PIC data word comprises the transmitter being further operable to:
determine whether to invert the ON indexes in the data word prior to determining the set of ON indexes which are the indexes of the data word that contain the logical True value.

18. The transmitter of claim 17 wherein being operable to encode the data word to be transmitted in the PIC format to produce the PIC data word comprises the transmitter being further operable to:
determine whether to reverse the ON indexes in the data word prior to determining the set of ON indexes which are the indexes of the data word that contain the logical True value.

Assignees

• Univ Khalifa Science & Technology

Inventors

• Muzaffar Shahzad
• Yoo Jerald
• Elfadel Ibrahim M

Classifications

• H04L25/4915

  using pattern inversion or substitution (H04L25/4908 takes precedence) · CPC title

• H04L25/4902 Primary

  Pulse width modulation; Pulse position modulation · CPC title

• H04B1/71075

  Parallel interference cancellation · CPC title

• H04L7/048

  using the properties of error detecting or error correcting codes, e.g. parity as synchronisation signal · CPC title

• H04L7/041

  using special codes as synchronising signal · CPC title