Display backlight smoothing based on human visual response time characterizations

Abstract

Methods, systems and apparatuses may provide for technology that generates a backlight compensation signal based on a user input, an operating system input and an adjustment output, wherein the backlight compensation signal includes a plurality of transitions in a time domain, and wherein the plurality of transitions occur at a frequency that exceeds a frequency threshold. The technology may also automatically apply the backlight compensation signal to a low pass filter to obtain a smoothened compensation signal and adjust a brightness level of the display panel based on the smoothened compensation signal and a modified pixel buffer.

1 . A computing system comprising:
 a display panel;   a network controller;   a processor coupled to the display panel and the network controller; and   a memory including a set of instructions, which when executed by the processor, cause the computing system to:   generate a backlight compensation signal based on a user input that comprises a user-defined backlight compensation, an operating system input that comprises an operating system-defined backlight compensation, and an adjustment output that comprises an automatic backlight compensation adjustment algorithm, wherein the backlight compensation signal is to include a plurality of transitions in a time domain, and wherein the plurality of transitions are to occur at a frequency that exceeds a frequency threshold,   automatically apply the backlight compensation signal to a low pass filter to obtain a smoothened compensation signal, and   adjust a brightness level of the display panel based on the smoothened compensation signal and a modified pixel buffer.   
     
     
         2 . The computing system of  claim 1 , wherein the backlight compensation signal is to be applied to one of a finite impulse response (FIR) or an infinite impulse response (IIR) filter. 
     
     
         3 . The computing system of  claim 2 , wherein the backlight compensation signal is to be applied to a Butterworth IIR filter. 
     
     
         4 . The computing system of  claim 3 , wherein the backlight compensation signal is to be applied to a third order Butterworth IIR filter. 
     
     
         5 . The computing system of  claim 3 , wherein the Butterworth IIR filter has a cutoff frequency of 2 Hz and a sampling period of 30 ms. 
     
     
         6 . The computing system of  claim 1 , wherein the smoothened compensation signal is to eliminate one or more rolling artifacts in the adjusted brightness level. 
     
     
         7 . A semiconductor apparatus comprising:
 one or more substrates; and   logic coupled to the one or more substrates, wherein the logic includes a low pass filter and is implemented at least partly in one or more of configurable logic or fixed-functionality hardware logic, the logic coupled the one or more substrates to:   generate a backlight compensation signal based on a user input that comprises a user-defined backlight compensation, an operating system input that comprises an operating system-defined backlight compensation, and an adjustment output that comprises an automatic backlight compensation adjustment algorithm, wherein the backlight compensation signal comprises backlight values as a time domain signal that is to includes a plurality of transitions in a time domain, and wherein the plurality of transitions are to occur at a frequency that exceeds a frequency threshold;   automatically apply the backlight compensation signal to the low pass filter to obtain a smoothened compensation signal; and   adjust a brightness level of a display panel based on the smoothened compensation signal and a modified pixel buffer.   
     
     
         8 . The semiconductor apparatus of  claim 7 , wherein the low pass filter includes one of a finite impulse response (FIR) or an infinite impulse response (IIR) filter. 
     
     
         9 . The semiconductor apparatus of  claim 8 , wherein the IIR filter includes a Butterworth IIR filter. 
     
     
         10 . The semiconductor apparatus of  claim 9 , wherein the Butterworth IIR filter includes a third order Butterworth IIR filter. 
     
     
         11 . The semiconductor apparatus of  claim 9 , wherein the Butterworth IIR filter has a cutoff frequency of 2 Hz and a sampling period of 30 ms. 
     
     
         12 . The semiconductor apparatus of  claim 7 , wherein the smoothened compensation signal is to eliminate one or more rolling artifacts in the adjusted brightness level. 
     
     
         13 . At least one computer readable storage medium comprising a set of instructions, which when executed by a computing system, cause the computing system to:
 generate a backlight compensation signal based on a user input that comprises a user-defined backlight compensation, an operating system input that comprises an operating system-defined backlight compensation, and an adjustment output that comprises an automatic backlight compensation adjustment algorithm, wherein the backlight compensation signal is to include a plurality of transitions in a time domain, and wherein the plurality of transitions are to occur at a frequency that exceeds a frequency threshold;   automatically apply the backlight compensation signal to a low pass filter to obtain a smoothened compensation signal; and   adjust a brightness level of a display panel based on the smoothened compensation signal and a modified pixel buffer.   
     
     
         14 . The at least one computer readable storage medium of  claim 13 , wherein the backlight compensation signal is to be applied to one of a finite impulse response (FIR) or an infinite impulse response (IIR) filter. 
     
     
         15 . The at least one computer readable storage medium of  claim 14 , wherein the backlight compensation signal is to be applied to a Butterworth IIR filter. 
     
     
         16 . The at least one computer readable storage medium of  claim 15 , wherein the backlight compensation signal is to be applied to a third order Butterworth IIR filter. 
     
     
         17 . The at least one computer readable storage medium of  claim 15 , wherein the Butterworth IIR filter has a cutoff frequency of 2 Hz and a sampling period of 30 ms. 
     
     
         18 . The at least one computer readable storage medium of  claim 13 , wherein the smoothened compensation signal is to eliminate one or more rolling artifacts in the adjusted brightness level. 
     
     
         19 . A method comprising:
 generating a backlight compensation signal based on a user input that comprises a user-defined backlight compensation, an operating system input that comprises an operating system-defined backlight compensation, and an adjustment output that comprises an automatic backlight compensation adjustment algorithm, wherein the backlight compensation signal includes a plurality of transitions in a time domain, and wherein the plurality of transitions occur at a frequency that exceeds a frequency threshold;   automatically applying the backlight compensation signal to a low pass filter to obtain a smoothened compensation signal; and   adjusting a brightness level of a display panel based on the smoothened compensation signal and modified pixel buffer.   
     
     
         20 . The method of  claim 19 , wherein the backlight compensation signal is applied to one of a finite impulse response (FIR) filter or an infinite impulse response (IIR) filter. 
     
     
         21 . The method of  claim 20 , wherein the backlight compensation signal is applied to a Butterworth IIR filter. 
     
     
         22 . The method of  claim 21 , wherein the backlight compensation signal is applied to a third order Butterworth IIR filter. 
     
     
         23 . The method of  claim 21 , wherein the Butterworth IIR filter has a cutoff frequency of 2 Hz and a sampling period of 30 ms. 
     
     
         24 . The method of  claim 19 , wherein the smoothened compensation signal eliminates one or more rolling artifacts in the adjusted brightness level.