Data-compressive sensor array
AssigneeThe Board of Trustees of the Leland Stanford Junior University
InventorsBoris Murmann, Dante Gabriel Muratore, Eduardo Jose Chichilnisky, Pulkit Tandon
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Abstract
Systems and methods for data-compressive sensing in accordance with embodiments of the invention are illustrated. In one embodiment, a sensor array includes an array of sensor circuitries including a sensor and a comparator. Sensor circuitries in the array are connected via wires which form a series of wired-OR circuits. Readouts can be used to measure the signal on the wires and a decoder in communication with the readouts can be used to resolve signals sensed by particular sensors in the array and their locations.
Claims20
A data-compressive sensor array, comprising:
- a ramp signal generator configured to distribute a global ramp signal;
- an array of sensor circuitries, where the sensor circuitries in the array are arranged in a plurality of rows and a plurality of columns, and where each sensor circuitry comprises:
- a sensor;
- and
- a comparator configured to compare the global ramp signal to a signal produced by the sensor;
- where the comparator for each sensor circuitry in a given row in the plurality of rows is connected via a given row wire;
- where the comparator for each sensor circuitry in a given column in the plurality of columns is connected via a given column wire;
- and
- where each row wire and each column wire form a wired-OR circuit;
- a row readout configured to sense the signal on each row wire;
- a column readout configured to sense the signal on each column wire;
- and
- a decoder connected to the row readout and the column readout configured to provide signal data describing signals produced by the sensors using a pulse-position modulation scheme.
A method for data-compressive sensing, comprising:
- connecting a plurality of sensor circuitries in an array having a plurality of rows and a plurality of columns, where each sensor circuitry comprises:
- a sensor;
- and
- a comparator configured to compare a global ramp signal to a signal produced by the sensor;
- where the comparator for each sensor circuitry in a given row in the plurality of rows is connected via a given row wire;
- where the comparator for each sensor circuitry in a given column in the plurality of column is connected via a given column wire;
- and
- where each row wire and each column wire form a wired-OR circuit;
- sensing the state of each row wire using a row readout;
- sensing the state of each column wire using a column readout;
- and
- decoding the states received from the row readout and the column readout to provide signal data describing the signals produced by the sensors using a decoder implementing a pulse-position modulation scheme.
Dependencies are inferred from the claim text.