Method and apparatus for sample rate conversion of sample streams
A sampling rate, sample flow technology, applied in the field of sample flow, can solve problems such as increasing system complexity and high system complexity
Active Publication Date: 2022-04-08
OCTO TELEMATICS
View PDF17 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, to implement such a system when the ratio between sampling rates undergoes variations over a wide range, a wide range of upsampling and downsampling factors may need to be accommodated, and this may result in high system complexity
Specifically, each combination of upsampling and downsampling factors may require different filter coefficients for the interpolation filter, and in addition to increasing the complexity of the system, this may require memory resources
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0050]By way of example, embodiments of the present invention will now be described in the context of an acceleration sensing system for a vehicle comprising a MEMS (Micro Electro Mechanical System) configured to generate a stream of samples at a first sampling rate; and a data processing system , which is configured to accept a stream of samples at the second sampling rate. It should be understood that embodiments of the invention may be relevant to other applications, and embodiments of the invention are not limited to use in vehicles or MEMS sensing systems. Embodiments may relate to other data processing systems involving sample rate conversion.
[0051] figure 1 A sample rate conversion system in one embodiment of the invention is shown. The MEMS acceleration sensor 2 is connected to the system data processing function 3 through an adaptive fractional sampling rate converter function 1 . Adaptive fractional sample rate converter function 1 in figure 2 shown in more d...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A method of converting a stream of samples at a first sampling rate to a stream of samples at a second sampling rate is disclosed, comprising: measuring the first sampling rate; based on the measured first sampling rate, a target value for the second sampling rate, and determining a first upsampling factor on the basis of the resynchronization error factor, the first upsampling factor constrained to be an integer power of a predetermined integer value; and from the reference set of filter coefficients and from the ratio of the first upsampling factor to the reference upsampling factor For the first set of filter coefficients used in the first interpolation filter, the reference set of filter coefficients is used for the reference upsampling factor, which is an integer power of a predetermined integer value.
Description
technical field [0001] The present invention relates generally to methods and apparatus for converting a stream of samples at a first sampling rate to a stream of samples at a second sampling rate, and more particularly, but not exclusively, to methods and apparatus for converting a sample stream at a first sampling rate from a first sampling rate experiencing a deviation from a nominal value. , adaptively transitions to the second sampling rate within a predetermined resynchronization error factor relative to the target value. Background technique [0002] In digital systems that involve processing sampled data, it may be necessary to convert the sampled data from one sampling rate to another. For example, a sensor system, such as an accelerometer in a vehicle, may sample data at a first rate, and this may be connected to a digital processing system that processes data samples at a different rate. The clock signals for the sensor and digital processor may be generated by d...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/05H03H17/00H03H17/06
CPCH03H17/0628H04L25/05H03H17/0275H04L43/024H04L43/026
Inventor 维托·阿万塔贾蒂马尔科·阿门多拉吉内
Owner OCTO TELEMATICS