Time synchronization system of video information and bus packet formation

A system, comprising:

• a computer device, a bus adapter, and a video information collector;
• wherein
• the computer device comprises a processor, a readable storage medium, a communication bus, and a communication interface;
• wherein
• the video information collector communicates with the processor via the communication interface;
• and
• the processor, the readable storage medium and the communication interface communicate with the bus adapter via the communication bus;
• the readable storage medium is configured to store an instruction program;
• the processor is configured to, after bus packets and video information are obtained, execute the instruction program to perform operations of:
• defining a timestamp of the video information as a basic timestamp;
• upon starting recording, obtaining a first-frame timestamp T0 of the video information, and aligning a first-frame timestamp of the bus packets with the first-frame timestamp T0 of the video information to obtain aligned bus packets and recording each frame timestamp Ty of the aligned bus packets;
• upon stopping recording, obtaining a tail-frame timestamp T1 of the video information and a tail-frame timestamp T2 of the bus packets;
• setting a ratio coefficient k=(T1−T0)/(T2−T0);
• traversing all recorded bus packets and modifying and storing each frame timestamp Ty of the bus packets as Tx, wherein Tx=T0+(Ty−T0)*k;
• and
• recording each frame timestamp Tx of the bus packets with a clock of the video information as basis.

A method, comprising:

• transmitting and receiving bus packets via a bus adapter;
• collecting video information via a video information collector;
• after the bus packets and the video information are obtained, executing instructions to cause a processor to perform operations of:
• defining a timestamp of the video information as a basic timestamp;
• upon starting recording, obtaining a first-frame timestamp T0 of the video information, and aligning a first-frame timestamp of the bus packets with the first-frame timestamp T0 of the video information to obtain aligned bus packets and recording each frame timestamp Ty of the aligned bus packets;
• upon stopping recording, obtaining a tail-frame timestamp T1 of the video information and a tail-frame timestamp T2 of the bus packets;
• setting a ratio coefficient k=(T1−T0)/(T2−T0);
• traversing all recorded bus packets and modifying and storing each frame timestamp Ty of the bus packets as Tx, wherein Tx=T0+(Ty−T0)*k;
• recording each frame timestamp Tx of the bus packets with a clock of the video information as basis;
• and
• displaying the time-synchronized bus packets and video information via a graphic interface.