A biometric information sharing system, includes a biometric information detection and transmission apparatus, and a biometric information presentation apparatus. A reference-signal obtaining unit obtains a reference signal for setting a reference when turning on the backlight. The actuator includes an actuator control signal generator generating an actuator control signal by pulse-width modulating an actuator driving signal and a carrier signal; and an actuator unit including the fixed comb electrodes and the moving comb electrode and adjusting the voltage according to the actuator control signal. After the compression processing proceeds, when at least one of the FIFOs 108a and 108b becomes full, the reconfigurable circuit is reconfigured into the second step configuration.