Patent ID: 11935489
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A display driver, comprising:
a timing controller, configured to send one first pulse of a tearing effect signal in each of a plurality of consecutive first preset times T1, wherein each first preset time T1 has a length of 1/f1, f1 is a first refresh rate of a display, each first pulse of the tearing effect signal indicates to a host to output a corresponding generated Nth frame of display data in a corresponding (N+1)th frame based on the respective first pulse of the tearing effect signal, and N is a positive integer;
a transceiver, receive and send display data sent by the host; and
a processor coupled to the transceiver;
wherein the timing controller is further configured to send S second pulses of the tearing effect signal when the transceiver does not receive a Nth frame of display data within a third preset time, wherein each pulse of the S second pulses of the tearing effect signal is used to prolong duration of the Nth frame by a second preset time T2, and indicates to the host to output the generated Nth frame of display data in the (N+1)th frame based on an Sth second pulse of the tearing effect signal, wherein S is a positive integer, (T1+T2)≤(1/f2), f2 is a second refresh rate of the display, and the first refresh rate is greater than the second refresh rate; and
wherein the processor is configured to:
attempt to receive each Nth frame of display data in the (N+1)th frame, and control, based on the Nth frame of display data when each Nth frame of display data is received, the display to display an Nth frame of image.