A system and method for providing seamless communication with threads executing on an embedded computer. A similar technique may be utilized to cancel the effect of incomplete settling of select lines that control the write and read switches of pixels on a row. The delay fine adjustment circuit 4 stepwise varies a delay amount based on the delay fine adjustment signal S2 and supplies the input oscillation signal S13 with a fine delay which is smaller than a delay amount supplied by the delay coarse adjustment circuit 3. An O-ring and a welding ring are placed around an edge of the diaphragm and the chamber between the diaphragm and the connector case. N-MOSFET’s, which are faster than P-MOSFET’s, are used for the implementation of switched current sources.