Method and apparatus for phase detection
AssigneeShenzhen Pango Microsystems Co., Ltd
InventorsXinjian Chen, Yuanjun Liang
Life of this patent
Estimating the term…
Abstract
This application discloses a method and apparatus for phase detection. The method includes: receiving input pulse signals; obtaining the primary sampling points of the input pulse signals; calculating the first area formed by the waveform curve of the input pulse signals and the time axis within the preceding unit time of the primary sampling point; calculating the second area formed by the waveform curve of the input pulse signals and the time axis within the subsequent unit time of the primary sampling point; comparing the size of the first area with the size of the second area to obtain the first comparison result; outputting the phase detection result of the input pulse signals based on the first comparison result and a pre-defined true value rule.
Claims10
A method for phase detection comprising:
- receiving an input pulse signal;
- obtaining a primary sampling point of the input pulse signal;
- calculating a first area formed by the waveform curve of the input pulse signal and the time axis within a preceding unit time of the primary sampling point;
- calculating a second area formed by the waveform curve of the input pulse signal and the time axis within a subsequent unit time of the primary sampling point;
- comparing the size of the first area with the size of the second area to obtain a first comparison result;
- outputting a phase detection result of the input pulse signal based on the first comparison result and a pre-defined true value rule.
An apparatus for phase detection comprising:
- a first integration circuit, which is configured for receiving an input pulse signal, calculating a first area formed by the waveform curve of the input pulse signal and the time axis within a preceding unit time of a primary sampling point, and sending the first area to a comparator;
- a second integration circuit, which is configured for receiving the input pulse signal, calculating a second area formed by the waveform curve of the input pulse signal and the time axis within a subsequent unit time of the primary sampling point, and sending the second area to the comparator;
- the comparator, which is configured for receiving the first area and the second area, comparing the size of the first area and the size of the second area to obtain a first comparison result, and sending the first comparison result to an error sampling circuit;
- the error sampling circuit, which is configured for receiving the first comparison result, processing the first comparison result to obtain the first error information, and sending the first error information to a phase detection logic circuit;
- a data sampling circuit, which is configured for receiving the input pulse signal, processing the input pulse signal to obtain first phase information, and sending the first phase information to the phase detection logic circuit;
- a phase detection logic circuit, which is configured for receiving the first error information and the first phase information, performing calculations based on a pre-defined true value rule to obtain the phase detection result of the input pulse signal.
Dependencies are inferred from the claim text.