Detection circuit, information processing apparatus, process cartridge and detection method

A detection circuit, configured at a process cartridge, wherein the process cartridge is detachably installed on an image-forming apparatus, comprising:

• a detection unit, configured to output a first parameter related to the process cartridge;
• an information feedback unit, configured to be electrically connected to the detection unit and provide the image-forming apparatus with feedback information according to a connection state between the detection unit and the information feedback unit, wherein the connection state between the detection unit and the information feedback unit includes a first state and a second state;
• and
• a control unit, configured to control the connection state between the detection unit and the information feedback unit to switch between the first state and the second state according to switching information outputted by the image-forming apparatus, wherein:
• in the first state, the feedback information is related to the first parameter, and the image-forming apparatus is capable of obtaining the first parameter based on the feedback information;
• and in the second state, the feedback information is not related to the first parameter.