# US 10,372,196 B2 · Dynamic pixel density adjustment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,372,196 B2 - Document ID: US10372196B2 - Status: Granted - Kind: B2 - Application number: 15/477,041 - Filed: 2017-04-01 - Published: 2018-10-04 - Granted: 2019-08-06 - Earliest claimed: 2017-04-01 - Assignees: Intel Corporation - Applicants: Intel Corporation - Inventors: Madhav Singh Chauhan; Animesh Manna; Susanta Bhattacharjee - Web page: https://patentgrep.com/patent/US10372196B2 ## CPC - G06F 1/3265: {Power saving in display device} - G06F 1/3212: Monitoring battery levels, e.g. power saving mode being initiated when battery voltage goes below a certain level - G09G 3/3406: {Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336)} - G09G 5/005: {Adapting incoming signals to the display format of the display terminal} - G09G 5/363: {Graphics controllers} - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - G09G 2320/043: Preventing or counteracting the effects of ageing - G09G 2330/021: Power management, e.g. power saving - G09G 2330/024: with inductors, other than in the electrode driving circuitry of plasma displays - G09G 2350/00: Solving problems of bandwidth in display systems - G09G 2352/00: Parallel handling of streams of display data - G09G 2360/08: Power processing, i.e. workload management for processors involved in display operations, such as CPUs or GPUs - G09G 2360/121: using a cache memory - G09G 2360/18: Use of a frame buffer in a display terminal, inclusive of the display panel - G09G 2370/16: Use of wireless transmission of display information - Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Methods and apparatus relating to techniques to provide dynamic pixel density adjustment for display panels not driven by backlight are described. In an embodiment, logic causes a first plurality of pixels of a display panel to be turned off in response to an indication that a charge level of a power supply, coupled to supply electrical power to the display panel, has dropped below a threshold level. The display panel is not backlight drive (such as an OLED or QDOT display panels. Other embodiments are also disclosed and claimed. ## Claims ### Claim 1 An apparatus comprising: logic, at least a portion of which is in hardware, to cause a first plurality of pixels of a display panel to be turned off in response to an indication that a charge level of a power supply, coupled to supply electrical power to the display panel, has dropped below a threshold level, wherein the display panel is not backlight driven, wherein the logic is to cause assignment of a lower resolution framebuffer for the first plurality of pixels in response to result of a capability query from the display panel, wherein the result of the capability query is to indicate whether the display panel is capable of causing the first plurality of pixels of the display panel to turn off at the display panel. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the display panel is to comprise an Organic Light Emitting Diode (OLED) display panel or a Quantum Dot Technology (QDOT) display panel. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the first plurality of pixels is to comprise a subset of pixels of the display panel in both horizontal and vertical axis of the display panel. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the logic is to cause replacement of the first plurality of pixels with a second plurality of pixels of the display panel after expiration of a time period. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the logic is to cause the first plurality of pixels of the display panel to be turned on in response to an indication that the charge level of the power supply has reached a level that is equal to or above the threshold level. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the indication is to comprise a voltage level of the power supply. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the power supply is to comprise at least one battery. ### Claim 8 (depends on 1) The apparatus of claim 1, further comprising a processor, coupled to the logic, wherein the processor is to comprise a Graphics Processing Unit (GPU) having one or more graphics processing cores. ### Claim 9 (depends on 1) The apparatus of claim 1, further comprising a processor, coupled to the logic, wherein the processor is to comprise one or more processor cores. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein one or more of a processor, the logic, and memory are on a single integrated circuit die. ### Claim 11 (depends on 1) The apparatus of claim 1, wherein the result of the capability query is to indicate whether a processor, coupled to the display panel, is capable of causing the first plurality of pixels to turn off. ### Claim 12 A method comprising: causing a first plurality of pixels of a display panel to be turned off in response to an indication that a charge level of a power supply, coupled to supply electrical power to the display panel, has dropped below a threshold level, wherein the display panel is not backlight driven, wherein a lower resolution framebuffer is assigned to the first plurality of pixels in response to result of a capability query from the display panel, wherein the result of the capability query indicates whether the display panel is capable of causing the first plurality of pixels of the display panel to turn off at the display panel. ### Claim 13 (depends on 12) The method of claim 12, wherein the display panel comprises an Organic Light Emitting Diode (OLED) display panel or a Quantum Dot Technology (QDOT) display panel. ### Claim 14 (depends on 12) The method of claim 12, wherein the first plurality of pixels comprises a subset of pixels of the display panel in both horizontal and vertical axis of the display panel. ### Claim 15 (depends on 12) The method of claim 12, further comprising causing replacement of the first plurality of pixels with a second plurality of pixels of the display panel after expiration of a time period. ### Claim 16 (depends on 12) The method of claim 12, further comprising causing the first plurality of pixels of the display panel to be turned on in response to an indication that the charge level of the power supply has reached a level that is equal to or above the threshold level. ### Claim 17 One or more non-transitory computer-readable medium comprising one or more instructions that when executed on at least one processor configure the at least one processor to perform one or more operations to: causing a first plurality of pixels of a display panel to be turned off in response to an indication that a charge level of a power supply, coupled to supply electrical power to the display panel, has dropped below a threshold level, wherein the display panel is not backlight driven, wherein a lower resolution framebuffer is to be assigned to the first plurality of pixels in response to result of a capability query from the display panel, wherein the result of the capability query is to indicate whether the display panel is capable of causing the first plurality of pixels of the display panel to turn off at the display panel. ### Claim 18 (depends on 17) The one or more non-transitory computer-readable medium of claim 17, wherein the display panel comprises an Organic Light Emitting Diode (OLED) display panel or a Quantum Dot Technology (QDOT) display panel. ### Claim 19 (depends on 17) The one or more non-transitory computer-readable medium of claim 17, wherein the first plurality of pixels comprises a subset of pixels of the display panel in both horizontal and vertical axis of the display panel. ### Claim 20 (depends on 17) The one or more non-transitory computer-readable medium of claim 17, further comprising one or more instructions that when executed on the at least one processor configure the at least one processor to perform one or more operations to cause replacement of the first plurality of pixels with a second plurality of pixels of the display panel after expiration of a time period. ### Claim 21 (depends on 17) The one or more non-transitory computer-readable medium of claim 17, further comprising one or more instructions that when executed on the at least one processor configure the at least one processor to perform one or more operations to cause the first plurality of pixels of the display panel to be turned on in response to an indication that the charge level of the power supply has reached a level that is equal to or above the threshold level. ### Claim 22 (depends on 17) The one or more non-transitory computer-readable medium of claim 17, wherein the indication comprises a voltage level of the power supply. ### Claim 23 (depends on 17) The one or more non-transitory computer-readable medium of claim 17, wherein the power supply comprises at least one battery. ### Claim 24 (depends on 17) The one or more non-transitory computer-readable medium of claim 17, wherein the processor comprises a Graphics Processing Unit (GPU) having one or more graphics processing cores. ### Claim 25 (depends on 17) The one or more non-transitory computer-readable medium of claim 17, wherein the processor comprises one or more processor cores.