1. A method of acquiring multimedia data, applied in a multimedia data acquisition apparatus, the multimedia data acquisition apparatus comprising a multimedia sensor, a triggering device, and a buffer memory, the method comprising: performing a data pre-acquisition process by acquiring multimedia data by the multimedia sensor before the triggering device is activated; storing the multimedia data acquired by the multimedia sensor in performing the data pre-acquisition process in the buffer memory; and terminating the data pre-acquisition process when the triggering device is activated.