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US 9,177,499 B2Granted
Method and system for prediction of gamma characteristics for a display
AssigneeThomson Licensing
InventorsBongsun Lee, Ingo Tobias Doser
Life of this patent
Estimating the term…
Abstract
A method and system for gamma adjustment for average power level dependency displays includes applying gamma controlled functions over a range of values at a plurality of average power levels (APLs) for a display. The gamma controlled functions include coefficients for reconstruction of the gamma controlled functions. Upon a change to an APL, interpolation is performed between the coefficients to predict a new gamma controlled function for the new APL.
Claims19
A method comprising:
- measuring gamma characteristics for a plurality of average power levels of a display to determine respective gamma controlled functions based on respective gamma curves derived from measured gamma characteristics;
- determining respective basis vectors and coefficients for the gamma controlled functions of the plurality of average power levels;
- and
- during operation of the display, in response to a different average power level, interpolating between coefficients associated with known average power levels to determine a respective coefficient and gamma controlled function for the different average power level.
1 more element
A display system, comprising:
- a display means configured to display input content;
- a storage means configured to store coefficients and gamma controlled functions for a plurality of average power levels;
- a sensor configured to determine when a change to an average power level has occurred or a new average power level has been received;
- and
- a processor configured to be responsive to the sensor and, during operation of the display means, in response to a different average power level determined by said sensor, interpolating between coefficients associated with known average power levels to determine a respective coefficient and gamma controlled function for the different average power level.
2 more elements
A display system, comprising:
- a display device configured to display input content;
- a memory configured to store coefficients and gamma controlled functions for a plurality of average power levels;
- a sensor configured to determine when a change to an average power level has occurred or a new average power level has been received;
- and
- a processor configured to be responsive to the sensor and, during operation of the display means, in response to a different average power level determined by said sensor, interpolating between coefficients associated with known average power levels to determine a respective coefficient and gamma controlled function for the different average power level.
2 more elements
Dependencies are inferred from the claim text.