Peak intensity level control device, self light-emitting display device, electronic device, peak intensity level control method, and computer program
A peak intensity level control device that controls a peak intensity level in a self light-emitting display module of an active matrix driving type is disclosed. The device includes: an average picture value calculation section that calculates an average picture value of display data to be supplied to the self light-emitting display module; a driving condition control section that controls, at a time of performing intensity-up driving with respect to the peak intensity level, a driving condition of the self light-emitting display module so as to be able to derive the peak intensity level suited for the average picture value; and a gamma change section that applies, at the time of performing the intensity-up driving with respect to the peak intensity level, a gamma change to the display data so as not to increase power consumption compared with driving with the peak intensity level of a standard value.
1. A peak intensity level control device that controls a peak intensity level in a self light-emitting display module of active matrix driving type, the device comprising:
an average picture value calculation section that calculates an average picture value of display data to be supplied to the self light-emitting display module;
a driving condition control section that controls, at a time of performing intensity-up driving with respect to the peak intensity level, a driving condition of the self light-emitting display module so as to be able to derive the peak intensity level suited for the average picture value; and
a gamma change section that applies, at the time of performing the intensity-up driving with respect to the peak intensity level, a gamma change to the display data so as not to increase power consumption compared with driving with the peak intensity level of a standard value.
2. The peak intensity level control device according to claim 1 , wherein
the average picture value calculation section calculates the average picture value for an arbitrary frame.
3. The peak intensity level control device according to claim 1 , wherein
the average picture value calculation section calculates the average picture value for the display data provided during a fixed length of time.
4. The peak intensity level control device according to claim 1 , wherein
the average picture value calculation section calculates the average picture value for every frame.
5. The peak intensity level control device according to claim 1 , wherein
the gamma change section
executes a gamma change process based on the average picture value of the display data designed for the self light-emitting display module.
6. The peak intensity level control device according to claim 1 , wherein
the gamma change section
stops, at the time of the intensity-up driving with respect to the peak intensity level corresponding to the average picture value, when the power consumption shows a decrease compared with the driving with the standard value, the gamma change to the display data, and
applies, at the time of the intensity-up driving with respect to the peak intensity level corresponding to the average picture value, when the power consumption shows an increase compared with the driving with the standard value, the gamma change to the display data to reduce an amount of increase of the power consumption.
7. A self light-emitting display device, comprising:
a self light-emitting display module with a pixel configuration of active matrix driving type;
an average picture value calculation section that calculates an average picture value of display data to be supplied to the self light-emitting display module;
a driving condition control section that controls, at a time of performing intensity-up driving with respect to a peak intensity level, a driving condition of the self light-emitting display module so as to be able to derive the peak intensity level suited for the average picture value; and
a gamma change section that applies, at the time of performing the intensity-up driving with respect to the peak intensity level, a gamma change to display data not to increase power consumption compared with driving with the peak intensity level of a standard value.
8. The self light-emitting display device according to claim 7 , wherein
a pixel is configured by an electroluminescent element.
9. An electronic device, comprising:
a self light-emitting display module with a pixel configuration of active matrix driving type;
a driving condition control section that controls, at a time of performing intensity-up driving with respect to a peak intensity level, a driving condition of the self light-emitting display module so as to be able to derive the peak intensity level suited for the average picture value;
a gamma change section that applies, at the time of performing the intensity-up driving with respect to the peak intensity level, a gamma change to display data so as not to increase power consumption compared with driving with the peak intensity level of a standard value; and
a system control section.
10. A driving condition control method of controlling a peak intensity level in a self light-emitting display module of active matrix driving type, the method comprising the steps of:
calculating an average picture value of display data to be supplied to the self light-emitting display module;
controlling, at a time of performing intensity-up driving with respect to the peak intensity level, a driving condition of the self light-emitting display module so as to be able to derive the peak intensity level suited for the average picture value; and
applying, at the time of performing the intensity-up driving with respect to the peak intensity level, a gamma change to display data so as not to increase power consumption compared with driving with the peak intensity level of a standard value.
11. A computer program product for allowing a computer to control a peak intensity level in a self light-emitting display module of active matrix driving type, the computer program product comprising a non-transitory computer readable medium having program code stored thereon, the program code being executable to perform operations comprising:
calculating an average picture value of display data to be supplied to the self light-emitting display module;
controlling, at a time of performing intensity-up driving with respect to the peak intensity level, a driving condition of the self light-emitting display module so as to be able to derive the peak intensity level suited for the average picture value; and
applying, at the time of performing the intensity-up driving with respect to the peak intensity level, a gamma change to display data so as not to increase power consumption compared with driving with the peak intensity level of a standard value.