A method and system for calibrating a terminal device
By performing self-tests and parameter adjustments during terminal device mode switching, the frequency anomaly issue of the real-time clock module during mode switching was resolved, thus improving the reliability of device timing.
CN115967395BActive Publication Date: 2026-07-21AISINO CORPORATION
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AISINO CORPORATION
- Filing Date
- 2022-12-30
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
Real-time clock modules are susceptible to external parasitic capacitance and ambient temperature and humidity, which can cause frequency abnormalities and timing errors when switching operating modes.
Method used
When the terminal device switches from low power mode to normal operation mode, it performs a self-test by acquiring an external oscillation signal and adjusts the parameters of the matching oscillation circuit to restore normal operation.
Benefits of technology
The issue of abnormal clock module frequency during mode switching has been resolved, improving the reliability of device timing.
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Smart Images
Figure CN115967395B_ABST
Abstract
The application discloses a method and system for calibrating a terminal device, the method comprising: in response to detecting that the terminal device switches from a low-power mode to a normal working mode, acquiring an external oscillation signal generated by an external crystal located outside the terminal device; performing signal detection on the external oscillation signal, and determining whether parameter adjustment of a matching oscillation circuit of a clock module inside the terminal device is needed based on a signal detection result of the external oscillation signal; when parameter adjustment of the matching oscillation circuit of the clock module inside the terminal device is needed, shutting down the matching oscillation circuit; based on the signal detection result of the external oscillation signal, performing parameter adjustment on circuit parameters of the matching oscillation circuit to obtain adjusted circuit parameters; and restarting the matching oscillation circuit, so that the restarted matching oscillation circuit operates in a normal state based on the adjusted circuit parameters.
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