Display frame rate control method and related apparatus for mitigating flickering and frame loss

A frame rate control method, applied to an electronic device using a Low Temperature Poly-silicon (LTPS) screen, and comprising:

• receiving a first operation of a user;
• starting a first application in response to the first operation;
• during running of the first application, transmitting an image frame based on a first Mobile Industry Processor Interface (MIPI) signal and sending the image frame for display based on a first TE signal, wherein a frequency of a first Tearing Effect (TE) signal is the same as a first frame rate;
• receiving a second operation of the user;
• starting a second application in response to the second operation;
• generating a second TE signal based on the first TE signal in a first periodicity;
• generating a second MIPI signal based on the first MIPI signal in a second periodicity, wherein the second periodicity follows the first periodicity, with a preset quantity of first periodicity intervals in between, and a value of the first periodicity interval is a reciprocal of the first frame rate;
• and
• in a third periodicity, transmitting the image frame based on the second MIPI signal, and sending the image frame for display based on the second TE signal, wherein the third periodicity follows the second periodicity, a frequency of the second TE signal is the same as a second frame rate, and the second frame rate is different from the first frame rate.

An electronic device, wherein the electronic device comprises:

• one or more processors, a memory, and a touch screen, wherein the memory is configured to store program code;
• and the one or more processors are configured to run the program code to enable the electronic device to:
• receive a first operation of a user;
• start a first application in response to the first operation;
• during running of the first application, transmit an image frame based on a first Mobile Industry Processor Interface (MIPI) signal and sending the image frame for display based on a first TE signal, wherein a frequency of a first Tearing Effect (TE) signal is the same as a first frame rate;
• receive a second operation of the user;
• start a second application in response to the second operation and generating a frame rate switching instruction;
• buffer the frame rate switching instruction;
• generate a second TE signal based on the first TE signal;
• generating a second MIPI signal based on the first MIPI signal when a quantity of image frames received by a hardware composer of the electronic device reaches a first quantity since the frame rate switching instruction has been buffered;
• and
• transmit the image frame based on the second MIPI signal, and sending the image frame for display based on the second TE signal, wherein a frequency of the second TE signal is the same as a second frame rate, and the second frame rate is different from the first frame rate.