A shared medical savings system and method are provided that allow a patient to participate in the savings generated by selecting to have a medical procedure performed overseas. The V-shaped filter bank may be moved from a working position in which the air is filtered to a service position in which a pair of filter pads in the filter bank can be accessed for service or replacement. Fingerprint techniques are further used for signal synchronization and other pre-processing steps to assist in digital watermark decoding. On the other hand, when the video signals corresponding to all of the pixels in one row of the plurality of pixels are equal to one another, input of a start pulse to the source driver is stopped, and the video signals input to the image signal input line are simultaneously output to the plurality of source signal line.