Patent ID: 11877053
Assignee: OLYMPUS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  A  G | IPC G  H

Claim 9:
10. A voltage conversion control method comprising:
generating second power supply voltage having lower negative voltage than ground voltage, based on ground voltage, first power supply voltage having higher voltage than the ground voltage, and a driving clock signal supplied from outside;
generating the second power supply voltage by boosting a predetermined level of voltage that is input from outside, at an absolute value level based on an input booster clock signal;
maintaining the second power supply voltage at a predetermined level;
generating the booster clock signal based on the driving clock signal;
generating a fist signal with a first voltage level based on the first power supply voltage and the second power supply voltage;
generating a second signal with a second voltage level based on the first power supply voltage and the ground voltage;
comparing the first voltage level and the second voltage level; and
controlling input of the driving clock signal to be supplied to a clock buffer based on a comparison result.