On demand calibration of imaging displays

摘要

A self-calibrating imaging display system includes a display comprising a screen and at least one photosensor associated with the screen and generating an output signal correlating to measurements for at least one region of the screen. The system further includes a display adaptor configured for, during a calibration routine, generating a display test pattern in the at least one region of the screen comprising at least one measurement field that comprises a number of pixels less than a total number of pixels of the screen and causing the at least one measurement field to be stepped through a sequence of increasing display driving level values. The system also includes a calibration module configured for, during the calibration routine, receiving the output signal, comparing the output signal to reference data, and generating at least one correction factor based on the comparing.

主权项

1. A self-calibrating imaging display system comprising:
a display comprising a screen; a display adaptor configured for, during a calibration routine, generating a display test pattern in two or more regions of the screen, the display test pattern in each region of the two or more regions comprising at least one measurement field that comprises a number of pixels less than a total number of pixels of the screen, and for each region of the two or more regions stepping the at least one measurement field in that region through a sequence of all display driving level (DDL) values; two or more photosensors associated with the display and generating a plurality of output signals correlating to measurements for the two or more regions of the screen for the sequence of all DDL values, wherein the measurements comprise measurements of luminance values for the two or more regions of the screen and measurements of color values for the two or more regions of the screen, wherein there is at least one photosensor of the two or more photosensors disposed in each region of the two or more regions of the screen, and wherein the two or more photosensors are photoelectric cells with electrical characteristics that vary in accordance with an amount of light that is incident upon the photoelectric cells; and a calibrator communicatively linked to the display, the two or more photosensors, and the display adaptor, the calibrator configured for, during the calibration routine, receiving the plurality of output signals, comparing the plurality of output signals to reference data, and generating a correction factor for each region of the two or more regions based on the comparing.