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US 6,687,140 B2Granted
Disconnection detecting circuit detecting disconnection based on a change in detection signal
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorFumihide Kitamura
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Abstract
A disconnection detecting circuit includes switches for setting a detection signal to be supplied for a signal line, a resistor for supplying the signal line with the detection signal set by the switches and control means for controlling the switches to set the detection signal to be supplied for the signal line and judging whether there is disconnection or not in the signal line on the basis of a change in the detection signal.
Claims6
A disconnection detecting circuit for detecting disconnection of a signal line connecting a device and a peripheral device, comprising:
- a switch for setting detection signal to be supplied for said signal line;
- a resistor for supplying said signal line with a detection signal set by said switch;
- and
- a control means being provided in said device for controlling said switch to set said detection signal to be supplied for said signal line and judging whether there is disconnection or not in said signal line on the basis of a change in said detection signal, which are provided in said device.
1 more element
Dependencies are inferred from the claim text.