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US 2014/0231631 A1Published application
Apparatus for pulse shaping
AssigneeSTMicroelectronics (Research & Development) Limited
InventorsJohn Kevin Moore, Bruce Rae
Life of this patent
Estimating the term…
Abstract
An array of photon sensitive devices is configured to provide outputs. Pulse shaping circuits operate to shape a respective output of the array in a normal mode of operation and shape a calibration signal in a calibration mode of operation.
Claims19
An apparatus, comprising:
- an array of photon sensitive devices, said array configured to provide a plurality of outputs;
- and
- a plurality of pulse shaping circuits, each pulse shaping circuits configured to operate in at least a normal mode of operation and a calibration mode of operation, and wherein the pulse shaping circuit in the normal mode of operation is configured to generate a pulse having a beginning which coincides with a beginning of a pulse from a respective photon sensitive device of said array, and wherein the pulse shaping circuit in the calibration mode of operation is configured to generate a pulse having a beginning which coincides with a beginning of a pulse of a calibration signal.
An apparatus, comprising:
- a photon sensitive device having an output configured to generate a photon pulse in response to receipt of a photon;
- a calibration signal generator having a first output configured to generate a calibration pulse and a second output configured to generate a control signal;
- a pulse shaping circuit configured to generate an output pulse signal having a leading edge which coincides with a leading edge of a received input pulse signal;
- and
- a multiplexing circuit having a first input coupled to the output of the photon sensitive device and configured to receive the photon pulse and a second input coupled to the first output of the calibration signal generator and configured to receive the calibration pulse and a control input couple to the second output of the calibration signal generator and configured to receive the control signal;
- wherein said multiplexing circuit couples the photon pulse as the input pulse signal to the pulse shaping circuit when the control signal is set in a normal operating state;
- and
- wherein said multiplexing circuit couples the calibration pulse as the input pulse signal to the pulse shaping circuit when the control signal is set in a calibration mode of operation.
5 more elements
An apparatus, comprising:
- a photon sensitive device having an output configured to generate a photon pulse in response to receipt of a photon;
- a calibration signal generator having a first output configured to generate a calibration pulse and a second output configured to generate a control signal;
- a pulse shaping circuit configured to generate an output pulse signal having a leading edge which coincides with a leading edge of a received input pulse signal;
- and
- a logic circuit having a first input coupled to the output of the photon sensitive device and configured to receive the photon pulse and a second input coupled to the first output of the calibration signal generator and configured to receive the calibration pulse and a control input couple to the second output of the calibration signal generator and configured to receive the control signal;
- wherein said logic circuit passes the photon pulse as the input pulse signal to the pulse shaping circuit when the control signal is set in a normal operating state;
- and
- wherein said logic circuit passes the calibration pulse as the input pulse signal to the pulse shaping circuit when the control signal is set in a calibration mode of operation.
5 more elements
Dependencies are inferred from the claim text.