Methods and systems for representing video in continuous time

A system for representing video in continuous time, comprising:

• a continuous time imaging sensor array for continuously capturing photons incident on pixels of the imaging array to produce respective continuous time analog signals without any discontinuity in time;
• each of the pixels comprising a photodiode and a sigma delta modulator circuit for modulating the respective continuous time analog signal into a respective continuous time binary analog signal;
• a processor for aggregating the continuous time binary analog signals from all the pixels to produce a frame free video stream;
• and
• a continuous time display array for displaying the frame free video stream;
• wherein:
• the photodiode has a capacitance;
• the capacitance of the photodiode functions as a charge integrator;
• and
• the modulator circuit comprises a continuous time sigma delta modulator.

A pixel for a continuous time imaging sensor array, comprising:

• a photodiode for capturing incident photons to produce a continuous time analog signal without any discontinuity in time;
• a sigma delta modulator circuit for modulating the continuous time analog signal into a continuous time binary analog signal,
• wherein:
• the photodiode has a capacitance;
• the capacitance of the photodiode functions as a charge integrator;
• and
• the continuous time binary analog signals from all pixels in an imaging sensor array are aggregated to produce a frame free video stream.