Photo-detecting apparatus

A method of using a photo-detecting apparatus to detect an incident light, the photo-detecting apparatus comprising a reset circuit, a first integral block, a second integral block, and a readout circuit, wherein the method comprises:

• entering a first operation mode, the first operation mode comprising:
• performing, by the reset circuit, a reset operation on the first integral block;
• and
• performing, by the first integral block, an integration operation to provide a first output voltage in response to the incident light, while the readout circuit outputs a second output voltage from the second integral block;
• and
• entering a second operation mode, the second operation mode comprising:
• performing, by the reset circuit, the reset operation on the second integral block;
• and
• performing, by the second integral block, the integration operation to provide the second output voltage in response to the incident light, while the readout circuit outputs the first output voltage from the first integral block.