| 摘要 |
A CCD control system is provided which can prevent CCD breakage caused by a latchup, etc. by having a function to detect two kinds of errors, Vsub error and power voltage error to prevent a latchup, etc. with placing the switching circuit in the CCD section, and the Vout signal monitoring circuit, without laying additional wiring to the CCD or making the diameter of the insertion tube larger. An electronic endoscope adopting the CCD control system is also provided which can prevent CCD breakage caused by a latchup, etc. The CCD control system includes a driving section that drives the CCD, a bias voltage generation section that generates a substrate bias voltage, a transmission line that transmits a output signal of the CCD, a transmission line alteration section that is placed on the transmission line, and a output signal monitoring section that is placed on the transmission line between the transmission line alteration section and the signal processing section for monitoring an output from the transmission line alteration section and sending a directive signal to stop supply of the drive signal to the driving section. |
