Patent ID: 11930158
Assignee: HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. The method according to claim 1, further comprising:
in response to determining that the format value is shared by formats of two target video signals, determining the two target video signals as a first target video signal and a second target video signal;
in response to determining that a frame rate of the first target video signal is half of a frame rate of the second target video signal, and detecting that the video signal is in the locked state after configuring the second register according to the first target video signal, reading a voltage value of a target line in a frame of the first target video signal, wherein the target line is any one of lines between a predetermined number of lines above and below a middle line in the frame of the first target video signal; and
in response to determining that the voltage value of the target line is negative or zero, determining that the video signal received is mis-locked.