Real-time data transmission error recovering method, device and system

The invention provides a real-time data transmission error recovering method, device and system, which is applicable to the field of data processing. The method comprises the following steps that: the total data quantity transmitted by a data transmission passage is configured; and after real-time equipment outputs data with the configured data quantity in each time, the real-time data transmission error recovering device requests the data transmission passage to finish the transmission of the data quantity requested by the real-time equipment. According to the method provided by the embodiment of the invention, when a next frame of the real-time equipment starts, the time sequence error between the real-time equipment and the data transmission passage can be recovered, the requirement on the efficiency of a system bus and a memory is reduced, in addition, the next frame can be recovered when the current frame has errors, and the data transmission error recovering speed is high.