WO2014084416A1

WO2014084416A1 - All-in-one computer employing multi-display device having detachable panel

Info

Publication number: WO2014084416A1
Application number: PCT/KR2012/010179
Authority: WO
Inventors: 이은석
Original assignee: Lee Eun-Suk
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2014-06-05

Abstract

The present invention relates to an all-in-one computer employing a multi-display device having at least one detachable panel capable of being wirelessly connected and, more particularly, to a computer employing a multi-display device which is connected to a computer having a main board so as to display image data provided from the computer having a main board. The multi-display device comprises a main panel and a detachable auxiliary panel having a wired/wireless communication module. The detachable auxiliary panel comprises a touch screen as an input interface and remotely controls the on/off of the power or switching to a power saving mode for the main panel. Accordingly, a user can wirelessly receive and confirm image data provided from the computer by using the detachable auxiliary panel even when separated at a predetermined distance from the computer and can remotely control an operation of the computer or the main panel.

Description

All-in-one computer with multiple display devices with removable panels

The present invention relates to an integrated computer employing multiple display devices, and more particularly, to an integrated computer employing multiple display devices in which at least one monitor is detachable and wirelessly interworkable in a display device composed of a plurality of monitors. It is about.

In general, computers include a main board equipped with a central processing unit (CPU), graphics (Video Graphics Array (VGA)) cards, sound chips, input / output interfaces, storage devices, input devices, and output devices (monitors, printers, etc.). It is composed. In this case, the monitor, which is a display device, reproduces a signal transmitted from a graphics card under a control of a CPU mounted on a main board, and outputs a predetermined image on a screen for the user to view. Such a computer has a configuration in which a main body on which a main board is mounted, a graphic card and a display device of the main body are connected by cables.

Existing display device composed of one screen has the disadvantage that when a plurality of tasks are simultaneously performed on a computer, there is a space limitation and inconvenience of work to display the execution screen of each program on one screen at the same time have. Recently, in order to solve the limitations of the work space, a technology for securing a work space by connecting two display devices to one computer main body has been proposed.

1 illustrates an example of a dual display device having two panels.

In the drawing, the dual display apparatus 30 shows a computer 10 in which the main body and one casing are integrally formed. As shown, the dual display device 30 includes a main panel 32 and an auxiliary panel 36 installed on the main panel 32.

FIG. 2 is a diagram illustrating a connection structure between a main body and a dual display device in the integrated computer 10 of FIG. 1.

As shown, the main board 20 mounted on the main body and the dual display device 30 are connected via cables 1 and 3 for image data transmission.

The motherboard 20 is equipped with a CPU (Central Process Unit) 22 and a graphics card 24. The CPU 22 controls the overall operation of the computer and controls the operation of the graphics card 24 for outputting image data. The graphics card 24 is configured as a dual graphics card having respective connection ports to output image data to the main panel 32 and the auxiliary panel 36 through the cables 1 and 3, respectively.

As such, the existing dual display apparatus 10 is manufactured such that the main panel 32 and the sub-panel 36 are integrally formed in one casing, and each of them is connected to the main board through wired cables 1 and 3. It is characterized in that it is manufactured.

However, as the user has two panels in a fixed position, the user may have a desire to move one panel to a place in a space or to control the operation of the computer. Furthermore, a user may have a desire to control the operation of the computer like a TV remote control even when the user is away from the computer without using a keyboard or a mouse connected to the computer.

However, the existing display apparatuses are not detachable from the main body of the

panels

36 and 36, and since the main board 20 and the

panels

32 and 36 are connected only by cables, the utilization of the computer is inferior.

An object of the present invention for solving the above problems is to provide an integrated computer employing a multi-display device in which at least one panel is detachable wireless interworking in a multi-display device consisting of a plurality of panels.

Another object of the present invention is to provide an integrated computer employing a multiple display device configured to remotely control the operation of the computer with at least one panel in a display device consisting of a plurality of panels.

A computer according to an embodiment of the present invention for achieving the above object, in a computer employing a multiple display device connected to a computer having a main board to display the image data provided from the computer,

The main board, the communication unit for receiving data by connecting to the Internet network; A CPU controlling an operation for outputting image data received from the communication unit to the multiple display apparatus; And a graphic processing unit including at least one graphic chip each having an output port for outputting the image data to the multiple display apparatus under control of the CPU, and a wired / wireless communication module having a separate output port. Including,

The multiple display apparatus includes a main panel having an input port connected to an output port of the graphic chip; And a wired / wireless communication video module detachable from an output port of the wired / wireless USB module and having an input port connected to the wired / wireless communication module in a wired or wireless manner, and installed on at least one side of the main panel. One removable auxiliary panel; Including,

The detachable auxiliary panel includes a touch screen as an input interface, and remotely controls a power on / off or switching of a power saving mode for the main panel through the touch screen.

Preferably, the storage unit is connected to the CPU, the storage unit for storing the connection program for executing an automatic connection to a specific website through the communication unit; It further includes, The CPU outputs the image data provided from the specific website to the removable auxiliary panel.

Preferably, when the image data displayed on the detachable auxiliary panel is selected through the touch screen, the CPU receives the information linked to the selected image data by wire or wirelessly through the communication unit so that the main panel or the The graphic processor is controlled to output to a detachable auxiliary panel.

Preferably, the wired / wireless communication module of the main board and the wired / wireless communication video module of the detachable auxiliary panel are wired / wirelessly connected to USB 3.0. Accordingly, the wired / wireless communication module is a wired / wireless USB module, and the wired / wireless communication video module is wired / wireless. USB video module is applied.

Preferably, the wired / wireless communication module of the main board and the wired / wireless communication video module of the detachable auxiliary panel may be any one of a radio frequency (RF) communication, a wireless fidelity (WiFi), a Bluetooth (BlueTooth), and a ZigBee (wireless) device. It is also wirelessly connected in one wireless communication method.

The computer according to another embodiment of the present invention includes an input port connected to an output port of the graphic chip, and at least one fixed auxiliary panel installed on any one of left and right sides and top and bottom sides of the main panel. do.

Preferably, the storage unit is connected to the CPU, the storage unit for storing the connection program for executing an automatic connection to a specific website through the communication unit; Further, wherein the CPU, forcibly output the limited image data provided from the specific website to the fixed auxiliary panel.

Preferably, when the image data displayed on the fixed sub-panel is selected through an input interface connected to the CPU, the CPU receives information linked to the selected image data through the communication unit, thereby receiving the main panel or the removable type. Output to the secondary panel,

When the image data displayed on the detachable auxiliary panel is selected through the touch screen, the information linked to the selected image data is wired or wirelessly received through the communication unit to output to the main panel or the detachable auxiliary panel. Control the graphics processor.

According to the present invention, any one panel in the multiple display device is detachably configured from the multiple display device and configured to be wirelessly connected to the main board of the main body when separated from the display device, even when the user is moving at a certain distance. The image data provided from the computer can be wirelessly received and confirmed, and the screen can be configured to include an input interface including a touch screen to remotely control the operation of the computer.

1 illustrates an example of a dual display device having two panels.

FIG. 2 is a diagram illustrating a connection structure between a main body and a dual display device in the integrated computer of FIG. 1.

3 is a diagram illustrating a computer in which one panel according to the first embodiment of the present invention is integrally formed with a dual display device capable of detachable wireless interworking.

4 is a diagram illustrating a connection structure between a main body and a dual display device in FIG. 3 according to a first embodiment of the present invention.

FIG. 5 is a diagram illustrating an example in which a detachable auxiliary panel is separated from a main board in FIG. 3 according to a first embodiment of the present invention.

FIG. 6 is a diagram illustrating an example of communication interworking between a detachable auxiliary panel and a main board separated in FIG. 5 according to a first embodiment of the present invention.

FIG. 7 is a diagram illustrating a computer in which one panel is integrally formed with a removable triple display device according to a second embodiment of the present invention.

FIG. 8 is a diagram illustrating a connection structure between a main body and a triple display device in FIG. 7 according to a second embodiment of the present invention.

FIG. 9 is a view illustrating an example in which a detachable auxiliary panel is separated from a main board in FIG. 7 according to a second embodiment of the present invention.

FIG. 10 is a diagram illustrating an example of communication interworking between a detachable auxiliary panel and a main board separated in FIG. 9 according to a second embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are represented by the same numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

As illustrated, the integrated computer 100 has a structure in which a main panel 320 and a detachable auxiliary panel 360 are disposed on a front surface, and a main body that outputs image data to a panel is integrally formed on a rear surface thereof. In this case, the detachable auxiliary panel 360 may be installed on any of the left and right sides or the top and bottom sides of the main panel 320.

As shown, the main board 200 of the main body is provided with a graphics processor including a graphics chip 260 having an output port and a wired and wireless USB module 270 having a separate output port. Correspondingly, the main panel 320 of the dual display apparatus 300 is connected to the output port provided on the graphic chip 260 of the motherboard 200 through a cable 262 through the provided input port. The detachable auxiliary panel 360 of the dual display device 300 is directly connected to an output port provided in the wired / wireless USB module 270 of the motherboard 200 through an input port of the wired / wireless USB video module 362 provided therein (272). ) Or connected wirelessly.

In FIG. 4, the motherboard 200 includes a CPU 210, a communication unit 220, an input interface 230, an output interface 240, a storage unit 250, a graphics chip 260, and a wired / wireless USB module 270. It is configured to include.

The CPU 210 controls the overall operation of the computer 100, and operates the graphics chip 260 and the wired / wireless USB module 270 to output image data to the dual display device 300 according to an exemplary embodiment of the present invention. To control.

The communication unit 220 accesses a website through an internet network and receives data provided from the accessed website. Here, the internet network includes a wired / wireless internet, an intranet, an extranet, and the like.

The communication unit 220 accesses an advertisement content providing server through an internet network and receives data provided from the advertisement content providing server. Here, the advertisement content providing server stores and manages the advertisement data received from the advertisement requesting companies that want to advertise through the dual display apparatus 300 of the present invention in a database, and manages the web from a computer connected to the dual display apparatus 300. When the site access signal is received, the advertisement data is stored to the computer. In the present embodiment, the content is described as an example of the advertising content, but as another example of the content, the present invention may also be provided by a web surfing, shopping mall, multimedia such as broadcasting or movies or music, or a messenger or an e-mail provided through a private network. This may apply equally.

The input interface 230 receives a command input from the user unit and provides the command to the CPU 210. In the present embodiment, the input interface 230 receives a selection command of a display for displaying image data input from a user and provides it to the CPU 210. In general, the input interface 230 of the present embodiment may be a keyboard or a mouse connected to the main board 200 of the computer.

The audio output unit 240 outputs audio data generated from a corresponding program executed according to a command of the CPU 210 through a speaker.

The storage unit 250 stores an access program for accessing a specific website set through the Internet while power is supplied to the main board 200 and the system is turned on. Here, in the access program, the storage unit 250 applies a connection command of a specific website to the CPU 210 while the power is applied, so that the CPU 210 accesses a specific website through the communication unit 220. It is an executable program.

In this embodiment, the specific web site is an advertisement contents providing server, and the advertisement contents providing server manages the advertisement contents requested by the companies and provides the advertisement contents through the Internet.

The graphic chip 260 is provided in the main board 200 and connected to the CPU 210 internally in the main body, and externally connected to the main panel 320 through the cable 262. The graphic chip 260 converts the image data into a format that can be displayed on the main panel 320 under the control of the CPU 210 and outputs the image data to the main panel 320 through the cable 262.

The wired / wireless USB module 270 is provided on the motherboard 200 to be connected to the CPU 210 internally to the main body, and to the wired / wireless USB video module 362 of the detachable auxiliary panel 360 by external contact or wirelessly. do. The wired / wireless USB module 270 converts image data into a format that can be displayed on the main panel 320 under the control of the CPU 210, and outputs the image data to the detachable auxiliary panel 360 directly or wirelessly. The wired / wireless USB video module 362 performs a function of converting and outputting image data of USB streaming, which is input or wirelessly, into a data format for display on a screen of the detachable auxiliary panel 360.

In the present embodiment, the wired / wireless USB module 270 and the wired / wireless USB video module 362 may be connected to a universal serial bus (USB) 3.0 standard. USB 3.0 offers the fastest data transfer rate of up to 5Gbps compared to previous versions. In addition, the power supply from the port has been increased from 500mA in USB 2.0 to 900mA, allowing peripherals that require higher power than ever before to operate without external power. Accordingly, when connected according to the USB 3.0 standard, not only text data having a small data capacity but also video data having a larger data capacity than text data can be output to be displayed on the detachable auxiliary panel 360.

In addition, in the exemplary embodiment of the present invention, the wired / wireless USB module 270 and the wired / wireless USB video module 362 are described as being connected to a wireless LAN through a USB interface. However, RF (Radio Frequency) communication, WiFi (Wireless Fidelity), It can be implemented to be connected through a wireless communication method such as Bluetooth (BlueTooth), ZigBee (ZigBee).

FIG. 5 is a diagram illustrating an example in which a detachable auxiliary panel is separated from a main board in FIG. 3 according to a first embodiment of the present invention. 6 is a diagram illustrating an example of communication interworking between the auxiliary panel and the main board separated in FIG. 5 according to the first embodiment of the present invention.

As shown, the present invention has a structure in which the removable auxiliary panel 360 is detachable from the computer 100.

When the detachable auxiliary panel 360 is separated from the computer 100, the detachable auxiliary panel 360 and the main board 200 of the computer 100 are wirelessly connected.

When the main board 200 and the removable auxiliary panel 360 are directly connected to USB, image data is directly transmitted and received. When the detachable auxiliary panel 360 is separated from the dual display apparatus 300 and detached from the wired / wireless USB module 270 as shown in FIG. 5, the wired / wireless USB module 270 and the wired / wireless USB video module 270 communicate with each other wirelessly. Will perform.

Accordingly, when image data is received from the CPU 210, the wired / wireless USB module 270 transmits the received image data to the wired / wireless USB video module 362 connected to the wireless communication. The detachable auxiliary panel 360 displays image data received from the wired / wireless USB module 270 through the wired / wireless USB video module 362 on the screen. Therefore, the user may check the image data transmitted wirelessly from the wired / wireless USB module 270 through the removable auxiliary panel 360 while carrying and moving the removable auxiliary panel 360.

In addition, the screen may be configured as a touch screen to select data displayed on the detachable auxiliary panel 360. Accordingly, the operation of the computer 100 may be remotely controlled through the removable auxiliary panel 360, or only the operation of the main panel 320 may be controlled. As an example of controlling the operation of the main panel 320, the main panel 320 may be turned on, off, or switched to a power saving mode. Therefore, when the user uses only the removable auxiliary panel 360, power may be saved by turning off the power of the main panel 320 or switching to a power saving mode.

FIG. 7 is a diagram illustrating a computer in which one panel is integrally formed with a removable triple display device according to a second embodiment of the present invention. FIG. 8 is a diagram illustrating a connection structure between a main body and a triple display device in FIG. 7 according to a second embodiment of the present invention.

As shown in the drawing, the integrated computer 400 includes a main panel 620, a fixed auxiliary panel 660, and a removable auxiliary panel 680 disposed on a front surface thereof, and a main body that outputs image data to the

panels

620, 660, 680 on a rear surface thereof. It has a structure formed integrally. In this case, the fixed auxiliary panel 660 and the removable auxiliary panel 680 may be installed on any of the left and right sides or the top and bottom sides of the main panel 620. In addition, the fixed auxiliary panel 660 and the removable auxiliary panel 680 may be installed on the left and right sides of the main panel 620, respectively.

As shown, the main board 500 of the main body is provided with a graphics processing unit including a graphics chip (560, 570) having a separate output port and a wired and wireless USB module (580). Correspondingly, the main panel 620 of the triple display apparatus 400 is connected to the output port provided on the graphic chip 560 of the motherboard 500 through an input port provided through a cable. In addition, the fixed auxiliary panel 660 of the triple display device 400 is connected to the output port provided in the graphic chip 570 of the main board 500 through the input port provided via a cable. The detachable auxiliary panel 680 of the triple display device 400 is directly connected or wirelessly connected to the output port provided in the wired / wireless USB module 580 of the motherboard 500 through an input port provided in the wired / wireless USB video module 682. Is connected.

In FIG. 8, the motherboard 500 includes a CPU 510, a communication unit 520, an input interface 530, an output interface 540, a storage unit 550, graphics chips 560 and 570, and a wired / wireless USB module 580. It is configured to include.

The CPU 510 controls the overall operation of the computer 400, and controls the operation of the graphics processor including

graphics chips

560 and 570 and a wired / wireless USB module 580 for outputting image data to the triple display apparatus 600. .

The communication unit 520 accesses a website through an internet network and receives data provided from the accessed website. The communication unit 520 accesses an advertisement content providing server through an internet network and provides data provided from an advertisement content providing server. Receive Here, the advertisement content providing server stores and manages the advertisement data received from the advertisement requesting companies that want to advertise through the triple display apparatus 600 of the present invention as a database, and stores the web from a computer connected to the triple display apparatus 600. When the site access signal is received, the advertisement data is stored to the computer.

The input interface 530 receives a command input from the user unit and provides the command to the CPU 510. In the present embodiment, the input interface 530 receives a selection command of a display for displaying image data input from a user and provides it to the CPU 510. In the input interface 530 of the present exemplary embodiment, a keyboard or a mouse connected to the main board 500 of the computer may be applied.

The audio output unit 540 outputs audio data generated from a corresponding program executed according to a command of the CPU 510 through a speaker.

The storage unit 550 stores an access program for accessing a specific website set through the Internet while power is supplied to the main board 500 and the system is turned on. Here, in the access program, the storage unit 550 applies a connection command of a specific web site to the CPU 510 while the power is applied, so that the CPU 510 accesses a specific web site through the communication unit 520. It is an executable program.

The

graphic chips

560 and 570 are provided in the main board 500 and connected to the CPU 510 internally to the main body, and are connected to the main panel 620 and the fixed auxiliary panel 660 through cables externally. The graphics chips 560 and 570 convert the image data into a format that can be displayed on the main panel 620 or the fixed auxiliary panel 660 under the control of the CPU 510 and output the data through the cable.

The wired / wireless USB module 580 is provided on the motherboard 500 and connected to the CPU 510 internally to the main body, and connected to the wired / wireless USB video module 682 of the removable auxiliary panel 680 externally by direct contact or wirelessly. do. The wired / wireless USB module 5800 converts image data into a format that can be displayed on the removable auxiliary panel 680 under the control of the CPU 210, and outputs the image data to the removable auxiliary panel 680 directly or wirelessly. The wired / wireless USB video module 682 converts and outputs video data of USB streaming, which is input or received wirelessly, into a data format for display on a screen of the removable auxiliary panel 680.

In the present embodiment, the wired / wireless USB module 580 and the wired / wireless USB video module 682 may be connected to the USB 3.0 standard as in the first embodiment. Accordingly, not only the text data having a small data capacity but also the moving image data having a larger data capacity than the text data can be output to be displayed on the detachable auxiliary panel 360.

As shown, the present invention has a structure in which the removable auxiliary panel 680 is detachable from the computer 400.

In the present exemplary embodiment, when the detachable auxiliary panel 680 is separated from the computer 400, the detachable auxiliary panel 680 and the main board 500 of the computer 400 are wirelessly connected.

In the present embodiment, when the main board 500 and the removable auxiliary panel 680 are directly connected to USB, image data is directly transmitted and received. When the detachable auxiliary panel 680 is separated from the triple display apparatus 600 and detached from the wired / wireless USB module 580 as shown in FIG. 9, the wired / wireless USB module 580 and the wired / wireless USB video module 682 communicate with each other wirelessly. Will perform.

Accordingly, when the image data is received from the CPU 510, the wired / wireless USB module 580 transmits the received image data to the wired / wireless USB video module 682 connected to the wireless communication. The detachable auxiliary panel 680 displays image data received from the wired / wireless USB module 580 through the wired / wireless USB video module 682 on the screen. Accordingly, the user may check the image data transmitted wirelessly from the wired / wireless USB module 580 through the removable auxiliary panel 680 while carrying and moving the removable auxiliary panel 680.

In addition, in the present embodiment, the screen may be configured as a touch screen to select data displayed on the detachable auxiliary panel 680. Accordingly, the operation of the computer 400 may be controlled remotely through the removable auxiliary panel 680.

Meanwhile, in the embodiment of the present invention, the CPU 510 is configured to automatically access a specific website through the communication unit 520 by executing the access program stored in the storage unit 550. At this time, the CPU 510 is a removable auxiliary panel (wired or wirelessly connected via a fixed auxiliary panel 660 or a wired or wireless USB module 580 connected to the motherboard 500 via a cable to the image data provided from a specific website ( 680).

The CPU 510 may control the graphics chip 570 to forcibly output the limited image data provided from the specific website to the fixed auxiliary panel 660.

When the data displayed on the fixed auxiliary panel 660 is selected through the input interface 530, the CPU 510 receives web page information linked to the selected data through the Internet network, thereby receiving the main panel 620 or a removable type. The auxiliary panel 680 outputs the wired or wireless.

In addition, when the selected signal is received in a wired or wireless manner through the input interface of the touch screen provided with the data displayed on the detachable auxiliary panel 680, the CPU 510 may display web page information linked to the selected data on the Internet network. Received through the main panel 620 and the fixed auxiliary panel 660 and the removable auxiliary panel 680 may be output to any one panel. In this case, the CPU 510 may be configured to output the received web page information to the main panel 620 or the detachable auxiliary panel 680.

In the above, specific preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and any person having ordinary skill in the art to which the present invention pertains may make various modifications and other equivalents without departing from the gist of the present invention attached to the claims. Implementation will be possible. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

The present invention is applicable to the integrated computer manufacturing industry.

Claims

A computer employing a multiple display device connected to a computer having a main board and displaying image data provided from the computer,

The main board,

A communication unit which accesses an internet network and receives data; A CPU controlling an operation for outputting image data received from the communication unit to the multiple display apparatus; And a graphic processing unit including at least one graphic chip each having an output port for outputting the image data to the multiple display apparatus under control of the CPU, and a wired / wireless communication module having a separate output port. Including,

The multiple display device,

A main panel having an input port connected to an output port of the graphic chip; And a wired / wireless communication video module detachable from an output port of the wired / wireless USB module and having an input port connected to the wired / wireless communication module in a wired or wireless manner, and installed on at least one side of the main panel. One removable auxiliary panel; Consists of including

The removable auxiliary panel includes a touch screen as an input interface, and remotely controls power on / off or switching of power saving mode for the main panel through the touch screen.
The method of claim 1,

A storage unit connected to the CPU and storing an access program for executing an automatic connection with a specific website through the communication unit; More,

And the CPU outputs image data provided from the specific website to the detachable auxiliary panel.
The method of claim 2,

The CPU,

When the image data displayed on the detachable auxiliary panel is selected through the touch screen, the information linked to the selected image data is wired or wirelessly received through the communication unit to output to the main panel or the detachable auxiliary panel. A computer characterized by controlling a graphics processor.
The method of claim 1,

The wired / wireless communication module of the main board and the wired / wireless communication video module of the detachable auxiliary panel are wired or wirelessly connected with USB 3.0.

Accordingly, the wired / wireless communication module is applied to the wired / wireless USB module, and the wired / wireless communication video module is applied to the wired / wireless USB video module.
The method of claim 1,

The wired / wireless communication module of the main board and the wired / wireless communication video module of the detachable auxiliary panel may be any one of radio frequency (RF) communication, WiFi (Wireless Fidelity), Bluetooth (BlueTooth), and ZigBee (wireless). A computer characterized by being wirelessly connected in a communication method.
The method of claim 1,

And at least one fixed auxiliary panel having an input port connected to an output port of the graphic chip and installed on any one of left, right, and top and bottom sides of the main panel.
The method of claim 6,

A storage unit connected to the CPU and storing an access program for executing an automatic connection with a specific website through the communication unit; More,

And the CPU forcibly outputting limited image data provided from the specific website to the fixed auxiliary panel.
The method of claim 7, wherein

The CPU,

When the image data displayed on the fixed auxiliary panel is selected through an input interface connected to the CPU, information linked to the selected image data is received through the communication unit and output to the main panel or the removable auxiliary panel,

When the image data displayed on the detachable auxiliary panel is selected through the touch screen, the information linked to the selected image data is wired or wirelessly received through the communication unit to output to the main panel or the detachable auxiliary panel. A computer characterized by controlling a graphics processor.