Touch Panel Scanning Frequency Adjustment via Peripheral Lookup
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Solution Overview
Problem
Conventional touch panel scanning frequency selection methods are inefficient due to interference from connected external devices, leading to noise generation and performance degradation.
Innovation Solution
An electronic device with a touch panel, a driving unit, and a processing unit that looks up a working frequency table based on peripheral component characteristics to determine and adjust the scanning frequency, avoiding interference and recording new frequency information for future reference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional frequency hopping operation is used to avoid interference, then touch panel performance is improved, but time consumption increases significantly
Solution Approach 1:
The patent pre-stores working frequencies of various peripheral components in a frequency table before actual operation. When a peripheral component is connected, the system quickly queries the pre-stored frequency information instead of performing time-consuming frequency hopping tests, thereby resolving the contradiction between ensuring performance and reducing time consumption.
2Object-affected harmful factors
If scanning frequency is adjusted to avoid peripheral device interference, then noise reduction is achieved, but system complexity increases
Solution Approach 1:
The patent introduces a frequency table as an intermediary data structure that stores the working frequencies of peripheral components. This table acts as a mediator between the touch panel controller and peripheral devices, enabling the system to avoid interference by querying pre-stored frequency information rather than implementing complex real-time frequency analysis and adjustment mechanisms.
Data Source
AI summary
An electronic device and a method for operating a touch panel of the electronic device are provided. The electronic device includes a touch panel, a driving unit and a processing unit. The driving unit is coupled to the touch panel, and drives the touch panel through a scanning frequency. The processing unit is coupled to the driving unit. When a peripheral component of the electronic device is enabled or connected to the electronic device, the processing unit looks up a working frequency table according to character information of the peripheral component, so as to obtain frequency information of the peripheral component, and determines whether or not to change the scanning frequency of the driving unit according to the frequency information of the peripheral component.