Patent Publication Number: US-2023133948-A1

Title: Adjustment of display settings

Description:
BACKGROUND 
     Computing devices, such as laptops, notebooks, etc., may be connected to external electronic devices, such as external display devices. The external electronic devices may be connected to the computing devices using a Universal Serial Bus (USB) Type-C standard. 
    
    
     
       BRIEF DESCRIPTION OF FIGURES 
       The detailed description is provided with reference to the accompanying figures, wherein: 
         FIG.  1    illustrates a computing device for adjusting display settings of an external display device, according to an example; 
         FIG.  2    illustrates a computing device for adjusting display settings an external display device, according to an example; 
         FIG.  3    illustrates a computing device for adjusting display settings an external display device, according to an example; 
         FIG.  4    illustrates a call flow diagram for adjusting display settings an external display device, according to an example; and 
         FIG.  5    illustrates a non-transitory computer readable medium for adjusting display settings an external display device, according to an example. 
     
    
    
     DETAILED DESCRIPTION 
     A computing device, such as a laptop computer, a notebook, etc., may be connected to an external electronic device, such as a display device, an input device, and so on. In an example, the computing device may be connected to the external electronic device through a Universal Serial Bus (USB) Type-C port. In an example, to simultaneously access multiple applications or documents, a user may connect the computing device to the external display device. 
     As the external display device may have preset display settings, the user may wish to change or adjust the preset display settings of the external display device. To do so, the user may access an interface, such as an on-screen display (OSD) menu, of the external display device. For example, the user may change a brightness setting, a contrast setting, and so on, from the OSD menu of the external display device. This may be time-consuming and inconvenient to the user. 
     The present subject matter discloses example approaches for adjusting display settings of an external display device from a computing device (host). The computing device may communicate with the external display device by using USB power delivery (PD) protocol-based messages, to adjust the display settings of the external display device. 
     The present subject matter proposes a technique for adjusting display settings of an external display device, such as a docking monitor. For example, a computing device may be connected to the external display device through a Universal Serial Bus (USB) Type-C port. Upon detection that the external display device is connected to the computing device, a power delivery (PD) controller of the computing device may transmit a display setting to the external display device. The PD controller may manage connections and messaging at the USB Type-C port of the computing device, In an example, the PD controller may embed the display setting in a USB PD protocol-based message, such as a vendor defined message (VDM) command. The VDM command may be a signal allocated by a manufacturer of a computing device or an external display device, The VDM command may be used for controlling a signal transmitted and received between the external display device and the computing device. 
     The PD controller may thereafter transmit the USB PD protocol-based message to the external display device. The external display device may adjust the display setting of a display panel thereof, as per the display setting transmitted by the PD controller. 
     Accordingly, the present subject matter may facilitate access of the on-screen display (OSD) menu of the external display device from the computing device to adjust the display settings of the external display device. Such adjustment of the display settings may enhance user experience while multiple external electronic devices are connected to the computing device. 
       FIG.  1    illustrates a computing device  100  for adjusting display settings of an external display device  102 , according to an example. The display settings may be the values set for different parameters associated with a display panel. For example, the display settings may include, but are not limited to, a brightness setting, a contrast setting, a language setting, a sharpness setting, and a position setting. Examples of the computing device  100  may include, but are not limited to, a laptop, a notebook computer, and a tablet. Further, the external display device  102  may be a monitor, such as a docking monitor. The docking monitor may include an integrated docking station to facilitate connections with multiple peripherals. The external display device  102  may be connected to the computing device  100  based on Universal Serial Bus (USB) Type-C standards. 
     The computing device  100  may include a power delivery (PD) controller  104  associated with a USB port (not shown). The USB port may facilitate attachment of peripheral devices, such as the external display device  102  with the computing device  100 . The PD controller  104  may detect that the display device  102  is connected to the computing device  100 . For example, when the display device  102  is coupled to the USB port of the computing device  100 , the PD controller  104  may communicate with a corresponding component (not shown) of the external display device  102  to negotiate power transfer capabilities between the computing device  100  and the external display device  102 . 
     In addition, upon detection of connection with the external display device  102 , the PD controller  104  may transmit a display setting to the external display device  102 . The display setting may indicate a setting to which the external display device  102  may adjust. In an example, the display setting may include a setting that may be included in an on-screen display (OSD) menu of the external display device  102 . 
     In an example implementation, the PD controller  104  may share the display setting with the external display device  102  through a USB PD protocol. The USB PD protocol may specify a communication format based on which the PD controller  104  may transmit the display setting to the external display device  102 . Once the external display device  102  has made adjustment in the display setting based on the display setting shared by the PD controller  104 , the PD controller  104  may receive an acknowledgement from the external display device  102 . The acknowledgment may indicate that the display setting shared by the computing device  100  have been adopted by the external display device  102 . In an example, the external display device  102  may send the acknowledgement to the PD controller  104 , as per the USB PD protocol. 
     The computing device  100  thus facilitates in efficiently adjusting the display setting of the external display device  102  by using USB PD protocols. The USB PD protocol may allow adjustment of the display setting from a host, such as the computing device  100 , by accessing an OSD menu of the external display device  102  from the computing device  100 . 
       FIG.  2    illustrates a computing device  200  for adjusting display settings of an external display device  202 , according to an example. In an example, the computing device  200  may be similar to the computing device  100 . The computing device  200  may include a display device  204 . The display device  204  may be a monitor (not shown) that may include various components that may facilitate the computing device  200  to display content. For example, the display device  204  may include a display panel (not shown). Examples of the display panel may include, but are not limited to, liquid crystal displays (LCDs), plasma displays, and light emitting diode (LED) based displays. In an example, the display panel may be a touch panel. 
     Further, the computing device  200  may include a controller  206 . The controller  206  may be implemented as an embedded controller, a microcontroller, a microprocessor, a functional block, logic, or other circuit or collection of circuits capable of performing the functions described herein. The controller  206  may be coupled to the display device  204  of the computing device  200  to receive the display setting of the external display device  202  that may be coupled to the computing device  200 . 
     The computing device  200  may further include a Universal Serial Bus (USB) Type-C controller  208  coupled to the display device  204  and the controller  206 . In an example, the USB Type-C controller  208  may be similar to the PD controller  104 . The USB Type-C controller  208  may be associated with a USB Type-C port (not shown) of the computing device  200 . The USB Type-C port may facilitate connection between the computing device  200  and the external display device  204 . The USB Type-C controller  208  may therefore, manage connections and messaging at the USB Type-C port of the computing device  200 . In an example, the external display device  202  may be a docking monitor that may facilitate connecting other peripherals with the computing device  200 . 
     When the external display device  204  may get connected to the computing device  200  through the USB Type-C port, the USB Type-C controller  208  may communicate with the controller  206  to obtain the display setting for the external display device  204 . The display setting may include, but are not limited to, a brightness setting, a sharpness setting, and a language setting, In an example, the controller  206  may receive the display setting of the external display device  204  from a memory (not shown) of the computing device  200 . In an example, the memory may be a non-volatile memory. 
     The USB Type-C controller  208  may embed the display setting, such as a brightness setting, in a USB Power Delivery (PD) protocol-based message. For example, the USB PD protocol-based message may include a pre-defined number of bits in a header of the message for embedding a value for the brightness setting of the external display device  202 . Once embedded, the USB Type-C controller  208  may transmit the USB PD protocol-based message to the external display device  202 . 
     Upon receiving the USB PD protocol-based message, the external display device  202  may retrieve the brightness setting embedded within the USB PD protocol-based message. The external display device  202  may adjust the brightness setting of a display panel (not shown) of the external display device  202  based on the brightness setting provided by the computing device  200 . 
     Further, the external display device  202  may send an acknowledgement to the computing device  200 . The acknowledgment may indicate that the display setting shared by the computing device  200  have been adopted by the external display device  202 . In an example, the acknowledgement may be received by the USB Type-C controller  208  of the computing device  200  about adjustment of the brightness setting by the external display device  202 . Upon receiving the acknowledgement, the USB Type-C controller  208  may send a confirmation message to the controller  206 . The confirmation message may indicate that the brightness setting transmitted by the computing device  200  have been adopted by the external display device  202  and the brightness setting may be stored in the memory as a latest brightness setting. 
     Although the present subject matter is explained with reference to the brightness setting, the display setting may include any may include a setting that may be included in an on-screen display (OSD) menu of the external display device  202 . Thus, the display setting is not limited to those mentioned with reference to  FIG.  2    and may include the sharpness setting, a position setting, etc. 
       FIG.  3    illustrates a system environment  300  for adjusting display settings of an external display device  302 , according to an example. The display settings may be the values set for different parameters associated with a display panel. For example, the display settings may include, but are not limited to, a brightness setting, a contrast setting, a language setting, a sharpness setting, and a position setting, a timer setting. The system environment  300  may include a computing device  304 , similar to the computing device  100  and  200 . Examples of the computing device  304  may include, but are not limited to, a laptop computer, a notebook computer, and a tablet. The computing device  304  may include a display device  306 . The display device  306  may be similar to the display device  204 . In the present example, the display device  306  may be a display screen of the computing device  304  to display data according to display setting of the computing device  304 . In an example, the display device  306  may be a detachable display. For example, the display device  306  may include a display panel (not shown). Examples of the display panel may include, but are not limited to, liquid crystal displays (LCDs), plasma displays, and light emitting diode (LED) based displays. In an example, the display panel may be a touch panel. 
     In an example, the computing device  304  may include interface(s)  308 . The interface(s)  308  may include a variety of interfaces, for example, interface(s)  308  for the external display device  302 . In an example, the interface(s)  308  may include a Universal Serial Bus (USB) interface that may be used to connect the external display device  302  to the computing device  304 . The interface(s)  308  may include data output devices. The interface(s)  308  may facilitate the communication of the computing device  304  with various electronic devices. In an example, the external display device  302  may be coupled to the computing device  304  through a USB cable  310 . 
     Further, the computing device  304  may include a processor  312 . The processor  312  may include microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuitries, and/or any other devices that manipulate signals and data based on computer-readable instructions. Further, functions of the various elements shown in the figures, including any functional blocks labeled as “processor(s)”, may be provided through the use of dedicated hardware as well as hardware capable of executing computer-readable instructions. 
     Any requests, for changing or adjusting the display setting, from a user of the computing device  304  may be received by the processor  312 . For example, the user may access an application through which the user may adjust the display setting of the external display device  302 . The user may provide input through the interface  308  of the computing device  304  to indicate the display setting based on which the external display device  302  may adjust corresponding display setting. The processor  312  may collect the input provided by the user and store the input as user-defined display setting. 
     Further, the computing device  304  may include a non-volatile memory  314 , such as read only memory (ROM), erasable programmable ROM, flash memories, hard disks, optical disks, and magnetic tapes. The non-volatile memory  314  may be associated with a firmware (not shown), such as a Basic Input/Output System (BIOS) of the computing device  304 . The NVM  314  may store a device information table and application information. The device information table may include device type information mapped to USB device information. The device information table may be used to obtain information pertaining to the external display device. The application information may include information on whether an application is to be accessed for controlling the external display device, an application type, and an address of a server for obtaining the application. Further, the NVM  314  may store any data input provided by the user of the application. 
     Further, the computing device  304  may include a controller  316 . The controller  316  may be a microprocessor of the computing device  304 , which is separate from the processor  312 . The controller  316  may be in communication with the display device  306  and the processor  312  of the computing device  304 . In an example, the controller  316  may be coupled to the processor  312  by a windows management instrumentation (WMI) layer. The input provided by the user and stored in the non-volatile memory  314  as the user-defined display setting, may be provided to the controller  316  through the WMI layer. In an example, the processor  312  may communicate with the controller  316  through the WMI layer. As user applications are executed at a user mode of an operating system of the computing device  304 , the WMI layer may provide access of the data input by the user into the user applications. Therefore, the controller  316  may access the user input through the WMI layer. 
     The computing device  304  further includes a power delivery (PD) controller  318  that may be coupled to the controller  316 . In an example, the PD controller  318  and the controller  316  may be connected together by an Inter-Integrated Circuit (I2C) bus. The I2C bus is a serial protocol for two-wire interface to connect low-speed devices, like rnicrocontrollers. The PD controller  318  may be associated with the USB Type-C port of the computing device  304 . The USB Type-C port may facilitate connection between the computing device  304  and the external display device  302 . The USB type-C port may enable different types of connections to be operable over one physical connection. For example, the same USB Type-C port may be used for transmitting data signals, display signals, and so on. The PD controller  318  may manage connections and messaging at the USB Type-C port of the computing device  304 . The PD controller  318  may interchangeably be referred to as a USB Type-C controller. 
     In an example implementation, the PD controller  318  may communicate with the external display device  302  through a USB PD protocol. The USB PD protocol may support vendor defined messaging (VDM) commands. Thus, the PD controller  318  may communicate with the external display device  302  through the VDM commands. The VDM commands may enable vendors to specify undocumented commands to implement vendor-specific functionality. For instance, opposing PD controllers may negotiate data transfer and power transfer upon detection of physical connection at the USB Type-C port. Details pertaining to communication between the computing device  304  and the external display device  302  will be described in detail at later paragraphs of the description. 
     In an example implementation, the external display device  302  may be a docking monitor. The docking monitor may include an integrated docking station to facilitate connections with multiple peripherals. The external display device  302  may include a display panel  320 . Examples of the display panel  320  may include, but are not limited to, liquid crystal displays (LCDs), plasma displays, and light emitting diode (LED) based displays. In an example, the display panel  320  may be a touch panel. 
     Further, the external display device  302  may include a scaler board  322  coupled to the display panel  320 . In an example, the scaler board  322  represents front-end electronics of the external display device  302  to receive digital signals from the computing device  304 . The scaler board  322  may process the digital signals to provide analog video signals to the display panel  320 . The processing performed by the scaler board  322  may include image processing, such as scaling, resolution controlling, backlight controlling, and other processing of digital data. 
     As mentioned earlier, the external display device  302  may be coupled to the computing device  304  through the USB cable  310 . The external display device  302  may include a USB Type-C port (not shown) for being coupled to a corresponding USB Type-C port of the computing device  304  for exchanging data. The corresponding USB Type-C ports may be connected together by the USB cable  310 . Further, the external display device  302  may include a PD controller  324 . The PD controller  324  may be associated with the USB Type-C port of the external display device  302  and may be similar to the PD controller  318 . 
     The external display device  302  may also include a dock controller (DC)  326 . The DC  326  may be a USB billboard controller that may manage USB dock and monitors. The DC  326  may manage any communication received by the PD controller  324  of the external display device  302 . For example, any data message received by the PD controller  324  may be forwarded to the DC  326 . The DC  326  may parse through the data messages and route the data messages to concerned components of the external display device  302 . For example, when the PD controller  324  receives a data message indicating the display setting of the external display device  302 , the DC  326  may forward the data message to the scaler board  322  of the external display device  302 . 
     In operation, upon connection of the external display device  302  and the computing device  304 , the USB Type-C port may send a signal to the PD controller  318 . Based on the signal, the PD controller  318  may determine that the external display device  302  is connected to the computing device  304 . The PD controller  318  may communicate with the PD controller  324  of the external display device  302  to negotiate power transfer capabilities between the computing device  304  and the external display device  302 . Further, the PD controller  318  may communicate with the controller  316  to obtain the display setting for the external display device  302 . The controller  316  may retrieve the display setting from the NVM  314  and transmit to the PD controller  318 . 
     In an example, the display setting stored in the NVM  314  is a current display setting of the display device  306 . For example, the current display setting may be a current value of display brightness, a current value of display sharpness, a current display language, and so on, that may be configured for the display device  306 . In this case, the computing device  304  may synchronize the display setting of the display device  306  with the external display device  302 . In another example, the display setting stored in the NVM  314  may be defined by a user of the computing device  304 . For example, the user may define a particular display setting for the external display device  302  through a user application. The particular display setting may get stored in the NVM  314  which may be retrieved later by the controller  316 . 
     Once the display setting is transmitted to the PD controller  318 , the PD controller  318  may transmit the display setting to the external display device  302  via a USB PD protocol. For example, the USB PD protocol may support a vendor defined message (VDM) command. The VDM command may be a signal allocated by a manufacturer of a computing device, such as the computing device  304  or an external display device, such as the external display device  302 . The VDM command may be used for controlling a signal transmitted and received between the external display device  302  and the computing device  304 . The VDM command transmitted from the computing device  304  to the external display device  302  through the USB Type-C may include a manufacturer identifier of the computing device  304 . 
     A structure of the VDM command may be defined by a PD specification of USB Type-C. Based on the structure, the VDM commands may be structured or unstructured. The structured VDM commands may be those commands that are defined by the PD specification of the USB Type-C. The unstructured VDM commands are not separately defined by the PD specification of the USB Type-C. The unstructured VDM commands may be used for transmitting messages that may be defined by vendors, such as a vendor of the computing device  304 . Although the unstructured VDM commands are not defined in the PD specification, data included in the unstructured VDM commands may have a size of about  24  bytes. The present subject matter describes communication between the computing device  304  and the external display device  302  using the unstructured VDMI commands. 
     Referring back to the PD controller  318 , upon receiving the display setting of the external display device  302 , the PD controller  318  may embed the display setting in the unstructured VDM command. For example, certain bits may be reserved for the vendor to specify a message. The PD controller  318  may embed the display setting in the reserved bits of the VDM command. Further, the PD controller  318  may transmit the VDM command to the PD controller  324  of the external display device  302 . 
     The PD controller  324  may forward the VDM command containing the display setting to the DC  326 . The DC  326  may parse through the VDM command and forward the display setting mentioned in the VDM command to the scaler board  322 . In an example, the DC  326  may be coupled to the scaler board  322 , such that the DC  326  may provide any data pertaining to the display panel  320  to the scaler board  322  over an Inter-Integrated Circuit (I2C) serial interface portion of a video signal cable, Universal Asynchronous Receiver/Transmitter circuit (UART), Recommended Standard (RS) 232, or Universal Serial Bus (USB) connection. 
     The scaler board  322  may obtain the display setting from the VDM command shared by the DC  326 . Based on the VDM command, the scaler board  322  may adjust the display setting of the display panel  320  to meet the display setting transmitted by the computing device  304 . Upon adjustment of the display setting of the display panel  320 , the scaler board  322  may send an acknowledgement to the DC  326 . The DC  326  may share the acknowledgement with the PD controller  324  over an I 2 C bus. The PD controller  324  may accordingly communicate with the PD controller  318  of the computing device  304  to transmit the acknowledgement received from the DC  326 . 
     Based on the acknowledgement, the PD controller  318  may send a confirmation message to the controller  316 . The confirmation message may indicate that the display setting transmitted to the external display device  302  may be stored as a latest display setting of the external display device  302 . The controller  316  may upon receiving the confirmation message, store the display setting of the external display device  302  in the NVM  314 . 
     Accordingly, the present subject matter may facilitate adjustment of display settings of the external display device  302  from the computing device  304  with which the external display device  302  is coupled. A user of the computing device  304  may access the GSD menu of the docking monitor from the interface  308  to adjust the display settings of the docking monitor. 
       FIG.  4    illustrates a call flow diagram  400  for adjusting display settings of an external display device, according to an example of the present subject matter. The various arrow indicators used in the, call flow diagram  400  depicts the transfer of data between the various entities in the system environment  300 , and between the computing device  304  and the external display device  302 . The order in which the call flow diagram  400  is described is not intended to be construed as a limitation, and any number of the described steps may be combined in any order to implement the call flow diagram  400 , or an alternative method. Further, certain trivial steps have been omitted in the sequence diagrams, for the sake of brevity and clarity. 
     Referring to  FIG.  4   , at step  402 , a power delivery (PD) controller  318  of the computing device  304  may establish a connection with the external display device  302 . In an example, the external display device  302  may be a docking monitor and the PD controller  318  may establish the connection based with the external display device  302  based on a PD protocol. During establishment of the connection, the PD controller  318  may communicate with a PD controller (not shown) of the external display device  302  to perform power negotiations. 
     At step  404 , the controller  316  of the computing device  304  may obtain a display setting for the external display device  302 . In an example, the display setting may be a current display setting of an integrated display device (not shown) of the computing device  304 . In another example, the display setting may be a pre-defined display setting. A user may access an interface of the computing device  304  to define the display setting of the external display device  302 . For example, the controller  316  may obtain the display setting from a memory, such as a non-volatile memory of the computing device  304 . In an example, the NVM may be a random-access memory (RAM) of a firmware, such as Basic Input/Output System (BIOS). 
     At step  406 , the controller  316  may transmit the display setting obtained from the memory of the computing device  304  to the PD controller  318  of the computing device  304 . In an example, the controller  316  and the PD controller  318  may be connected together by an Inter-Integrated Circuit (I2C) bus. The I2C bus is a serial protocol for two-wire interface to connect low-speed devices, like microcontrollers. 
     At step  408 , upon receiving the display setting from he controller  316 , the PD controller  318  may transmit the display setting to the external display device  302  via a PD protocol. For example, the PD controller  318  may embed the display setting in a PD protocol-based message and transmit the PD protocol-based message to the external display device  302 . In an example, the PD protocol supports a vendor defined message (VDM) command. The VDM command is specific to the USB PD protocol which enables vendors to include specific commands to implement vendor-specific functionality. 
     Further, at step  410 , the VDM command may be received by a dock controller (DC) of the external display device. The DC may route the command to a scaler board (not shown) of the external display device  302 . The scaler board may adjust the display setting of a display panel (not shown) of the external display device  302  based on the display setting embedded in the VDM command. 
     Upon adjustment of the display setting, the external display device  302  may send an acknowledgement message to the PD controller  318 , as indicated in step  412 . In an example, the PD controller of the external display device  302  may communicate with the PD controller  318  of the computing device  304  to transmit the acknowledgement message. 
     At step  414 , based on the acknowledgement message, the PD controller  318  may transmit a confirmation message to the controller  316 . The confirmation message may indicate that the external display device  302  has adjusted to the display setting transmitted by the computing device  304 . The controller  316  may store the display setting of the external display device  302  in the non-volatile memory of the computing device  304 . 
       FIG.  5    illustrates an example system environment  500  using a non-transitory computer-readable medium  502  for adjusting display settings of an external display device, according to an example. The system environment  500  includes a processing resource  504  communicatively coupled to the non-transitory computer-readable medium  502  through a communication link  506 . For example, the processing resource  504  may be a power delivery (PD) controller or an embedded controller of a computing system, such as the computing device, for fetching and executing computer-readable instructions from the non-transitory computer-readable medium  502 . 
     The non-transitory computer-readable medium  502  may be, for example, an internal memory device or an external memory device. In one example, the communication link  506  may be a direct communication link, such as one formed through a memory read/write interface. In another example, the communication link  506  may be an indirect communication link, such as one formed through a network interface. In such a case, the processing resource  504  may access the non-transitory computer-readable medium  502  through a network (not shown). 
     In an example, the non-transitory computer-readable medium  502  includes a set of computer-readable and executable instructions for adjusting display settings of an external display device. The set of computer-readable instructions may include instructions as explained in conjunction with  FIGS.  1  to  3   . The set of computer-readable instructions, referred to as instructions hereinafter, may be accessed by the processing resource  504  through the communication link  506  and subsequently executed to perform acts for modifying a feature in a standby mode based on power source capacity. 
     Referring to  FIG.  5   , in an example, upon connection of an external display device to the computing device through a Universal Serial Bus (USB) Type-C port, the non-transitory computer-readable medium may include instructions  508  to automatically obtain a display setting of a display device of the computing device. In an example, a power delivery (PD) controller of the computing device may automatically obtain the display setting of the display device of the computing device. The PD controller may manage connections and messaging at the USB Type-C port of the computing device. 
     In an example, the PD controller may communicate with a controller, such as an embedded controller, of the computing device to obtain the display setting of the display device of the computing device. In an example, the display setting may be a current display setting of the display device of the computing device. For example, the current display setting may be a current value of display brightness, a current value of display sharpness, a current display language, and so on, that may be configured for the display device of the computing device. In another example, the display setting may be pre-defined by a user of the computing device. The display setting may include a brightness setting, a sharpness setting, a language setting, a timer setting, or a combination thereof. 
     The non-transitory computer-readable medium  502  may also include instructions  510  to transmit the display setting of the computing device to the external display device through a USB Power Delivery (PC) protocol. The USB PD protocol may specify a communication format based on which the PD controller may transmit the display setting to the external display device. In an example, the external display device may be a docking monitor. For example, the USB PD protocol may support a vendor defined message (VDM) command. The VDM command is specific to the USB PD protocol which enables vendors to specify undocumented commands to implement vendor-specific functionality. 
     The non-transitory computer-readable medium  502  may include instructions  512  to store the display setting of the external display device in a non-volatile memory (NVM) of the computing device, upon adjustment of the display setting of the external display device. In an example, the PD controller may receive a confirmation from the external display device In response to the confirmation, the PD controller may communicate with the controller to inform the controller about the adjustment of the display setting of the external display device. The controller may store the display setting in the NVM of the computing device. In an example, the NVM may be a read-only memory (ROM) of a firmware, such as Basic Input/Output System (BIOS). The controller may accordingly store the display setting of the external display device in the BIOS ROM. 
     Although aspects for the present disclosure have been described in a language specific to structural features and/or methods, it is to be understood that the appended claims are not limited to the specific features or methods described herein. Rather, the specific features and methods are disclosed as examples of the present disclosure.