A method for controlling a camera using an image compression algorithm. The side chains of P1\u2032 and P3\u2032 interact with the PDF active site, and preferably, P2\u2032 has a side chain that interacts with a solvent. Medical images for display are displayed based on the determined display protocols. Further, when a new ECU is substituted or added, a terminal confirms whether the new ECU is unused in another vehicle and is thereby enabled to be usable by transmitting an authentication ID of the new ECU to a management center.