Granted Patent B2

US 9,619,144 · App. 14/087,068 · Granted Apr 11, 2017

Abstract

Claims (58)

1. A device comprising:

a first filtering module to provide a first interrupt and a first filtered measurement value associated with the first interrupt;

a second filtering module to provide a second interrupt and a second filtered measurement value associated with the second interrupt;

a data control module coupled to the first filtering module and the second filtering module to obtain the first filtered measurement value from the first filtering module, provide an indication after obtaining the first filtered measurement value, and obtain the second filtered measurement value from the second filtering module in response to an instruction; and

an interrupt control module coupled to the first filtering module, the second filtering module, and the data control module to buffer the second interrupt, notify the first filtering module to clear the first interrupt in response to the indication from the data control module, and provide the instruction to the data control module to obtain the second filtered measurement value after receiving the indication from the data control module, wherein:

the first filtered measurement value is determined based on a first sensor measurement value indicative of a first characteristic sensed by a first sensing arrangement and having a first sampling frequency;

the second filtered measurement value is determined based on a second sensor measurement value indicative of a second characteristic sensed by a second sensing arrangement and having a second sampling frequency; and

the first sampling frequency is different from the second sampling frequency.

2. The device of claim 1 , wherein the data control module provides a second indication after obtaining the second filtered measurement value and the interrupt control module notifies the second filtering module to clear the second interrupt in response to receiving the second indication from the data control module.

3. The device of claim 1 , wherein:

the data control module is configured provide a second indication after obtaining the second filtered measurement value; and

the interrupt control module is configured to notify the second filtering module to clear the second interrupt in response to receiving the second indication from the data control module.

4. The device of claim 1 , further comprising an arithmetic logic unit coupled to the data control module to determine calibrated data based at least in part on the first filtered measurement value, wherein the data control module is configured to provide the indication after providing the first filtered measurement value to the arithmetic logic unit.

5. The device of claim 4 , wherein:

the arithmetic logic unit includes one or more arithmetic arrangements; and

a clock frequency associated with the one or more arithmetic arrangements is different from a clock frequency associated with the data control module.

6. The device of claim 4 , further comprising a serial interface control module to obtain the calibrated data and output the calibrated data via a serial interface, wherein a clock frequency associated with the serial interface control module is different from a clock frequency associated with the data control module.

7. The device of claim 1 , wherein a clock frequency associated with the data control module is different from the first sampling frequency associated with the first filtered measurement value.

8. A method of processing measurement data, the method comprising:

identifying, by an interrupt control module, a second interrupt generated by a second filtering module;

determining, by the interrupt control module, whether a data control module is available to service the second interrupt;

buffering, by the interrupt control module, the second interrupt in response to determining the data control module is unavailable to service the second interrupt;

determining, by the interrupt control module, whether a first filtered measurement value associated with a first interrupt generated by a first filtering module has been serviced by the data control module; and

notifying, by the interrupt control module, the first filtering module to clear the first interrupt in response to determining the first interrupt has been serviced; and

providing, by the interrupt control module, a notification to the data control module to service the second interrupt after determining the first filtered measurement value associated with the first interrupt generated by the first filtering module has been serviced by the data control module, wherein

the first filtered measurement value is determined based on a first sensor measurement value obtained from a first sensing arrangement having a first sampling frequency;

a second filtered measurement value associated with the second interrupt is determined based on a second sensor measurement value obtained from a second sensing arrangement having a second sampling frequency; and

the first sampling frequency associated with the first filtered measurement value is different from the second sampling frequency associated with the second filtered measurement value.

9. The method of claim 8 , further comprising:

buffering, by the interrupt control module, the first interrupt in response to determining the data control module is unavailable to service the first interrupt; and

thereafter providing, by the interrupt control module, a notification to the data control module to service the first interrupt after determining the data control module is available to service the first interrupt.

10. The method of claim 9 , the data control module obtaining the first measurement data from the first filtering module after the notification and generating an indication after obtaining the first measurement data, wherein determining whether the measurement data associated with the first interrupt has been serviced comprises the interrupt control module identifying the indication generated by the data control module.

11. The method of claim 8 , wherein the data control module obtains the second measurement data from the second filtering module after the notification and generates a second indication after obtaining the second measurement data, the second measurement data being based at least in part on second output from the second sensing arrangement, wherein the method further comprises:

determining, by the interrupt control module, the second measurement data associated with the second interrupt has been serviced in response to identifying the second indication; and

notifying, by the interrupt control module, the second filtering module to clear the second interrupt in response to determining the second interrupt has been serviced.

12. A signal processing system comprising:

a first sensing arrangement to provide first measurement data indicative of a first characteristic sensed by the first sensing arrangement;

a second sensing arrangement to provide second measurement data indicative of a second characteristic sensed by the second sensing arrangement, wherein a first sampling frequency associated with the first measurement data is different from a second sampling frequency associated with the second measurement data;

a first filtering module coupled to the first sensing arrangement to generate a first interrupt and a first filtered measurement value associated with the first interrupt based at least in part on the first measurement data;

a second filtering module coupled to the second sensing arrangement to generate a second interrupt and a second filtered measurement value associated with the second interrupt based at least in part on the second measurement data;

a data control module coupled to the first filtering module and the second filtering module to:

obtain the first filtered measurement value from the first filtering module; and

provide a first indication after obtaining the first filtered measurement value; and

an interrupt control module is coupled to the first filtering module and the second filtering module to:

buffer the second interrupt; and

in response to the first indication from the data control module:

notify the first filtering module to clear the first interrupt; and

instruct the data control module to obtain the second filtered measurement value from the second filtering module.

13. The signal processing system of claim 12 , wherein the data control module provides a second indication after obtaining the second measurement data and the interrupt control module notifies the second filtering module to clear the second interrupt in response to receiving the second indication from the data control module.

14. The signal processing system of claim 12 , wherein:

the data control module is configured provide a second indication after obtaining the second measurement data; and

the interrupt control module is configured to notify the second filtering module to clear the second interrupt in response to receiving the second indication from the data control module.

15. The signal processing system of claim 12 , further comprising an arithmetic logic unit coupled to the data control module to determine calibrated data based at least in part on the first measurement data, wherein the data control module is configured to provide the first indication after providing the first measurement data to the arithmetic logic unit.

16. The signal processing system of claim 15 , wherein:

the arithmetic logic unit includes one or more arithmetic arrangements; and

a clock frequency associated with the one or more arithmetic arrangements is different from a clock frequency associated with the data control module.

17. The signal processing system of claim 15 , further comprising a serial interface control module to obtain the calibrated data and output the calibrated data via a serial interface, wherein a clock frequency associated with the serial interface control module is different from a clock frequency associated with the data control module.

18. The signal processing system of claim 12 , wherein a clock frequency associated with the data control module is different from the first sampling frequency and the second sampling frequency.

Assignments (22)