A transmission method for video image data using an embedded bit stream in a hierarchical table-lookup vector quantizer comprises the steps encoding an image using hierarchical vector quantization and an embedding process to obtain an embedded bit stream for lossless transmission. If the data set is smaller than the data cache, the data processing apparatus performs the Fast Fourier Transform in logRN stages on all the data set in one pass. A speed limitation setting device sets a speed limit based on the temperature difference between the limit control start temperature and the detected temperature T on a rate of increase of the detected temperature. In some methods, the interfacial region is formed after formation of an electrochromic and a counter electrode layer. Then, the control apparatus, when detecting that the increased terminal voltage of the capacitor due to charging from the fuel cell has gone above the estimated output voltage, outputs to an output controller a control command to start power supply to a propulsion motor. The apparatus clears the barrel andor prevents water from entering the barrel based on pressure variations.