Patent ID: 8235488

Claim:
An electronic apparatus, comprising: at least one internal unit; and a signal generator to generate a drive pulse having a width that gradually changes in an edge region and to drive the at least one internal unit, the signal generator having: a first signal generator to generate a first drive pulse having a predetermined pulse width; and a second signal generator including a reference signal generator and a pulse signal generator, the pulse signal generator to generate a pulse signal, the reference signal generator to generate a reference signal, and a signal comparator to receive the reference signal and the pulse signal and to generate a timing control signal to control output timing of the first drive pulse that is received by a signal converter when a level of the reference signal is higher than a level of the pulse signal, and to generate a second drive pulse with the signal converter according to the received first drive pulse and the timing control signal, wherein the second signal generator generates the second drive pulse gradually changing in the edge region by controlling an output timing of the first drive pulse.