TWI766518B - Display apparatus and method of synchronizing mouse sensitivities - Google Patents

Abstract

A display apparatus is provided. The display apparatus is electrically connected to a host that runs an operating system. The display apparatus includes a display module, a display controller, a first Universal Serial Bus (USB) interface, and a USB hub. A first USB mouse is connected to the first USB interface, and the display controller stores a first sensitivity of the first USB mouse as a first sensitivity setting. When a second USB mouse is connected to the first USB interface or a second USB interface of the display apparatus, the display adjusts a first human interface device (HID) descriptor reported by the second USB mouse to generate a second HID descriptor, wherein a second sensitivity of the second USB mouse is different from the first sensitivity, and the second HID descriptor complies with the first sensitivity setting. The display controller reports the second HID descriptor to the host through the USB hub so the host controls a cursor of the operating system according to the second HID descriptor.

Description

Display device and mouse sensitivity synchronization method

The present invention relates to a display device, and more particularly, to a display device and a mouse sensitivity synchronization method thereof.

The functions of today's display devices are becoming more and more diverse, and many display devices are equipped with USB hubs or provide USB-PD (USB Power Delivery) functions. The user can connect the USB peripheral devices (such as mouse, keyboard, etc.) to the USB hub on the display device, and the host can recognize the above-mentioned USB peripheral devices through the USB protocol, so the user can control the host screen through the USB mouse on the cursor. However, because there are many models of mice from various manufacturers on the market, their sensitivity is also different. When the user changes to a different mouse and operates the cursor in the operating system, the sensitivity of the new mouse is likely to be different from the sensitivity of the old mouse that the original user is accustomed to, and the user needs to spend time adjusting the settings of the new mouse , but may not be consistent with the old mouse settings, resulting in a reduced user experience.

In view of this, the present invention provides a display device and a mouse sensitivity synchronization method to solve the above problems.

The present invention provides a display device which is electrically connected to a host, and the host runs an operating system. The display device includes: a display module, a display controller, a first universal serial bus (USB) interface and a USB hub. The display controller is used for controlling the display screen of the display module. The first USB interface is electrically connected to the display controller, and a first USB mouse is connected to the first USB interface, wherein the first USB mouse uses the first sensitivity. The display controller stores the first sensitivity used by the first USB mouse as the first sensitivity setting. When a second USB mouse replaces the first USB mouse and is connected to the USB interface or the second USB mouse is connected to the second USB interface of the display device, the display controller adjusts the second USB mouse to report to the display controller the first human interface device (HID) descriptor to generate the second HID descriptor, wherein the second sensitivity used by the second USB mouse is different from the first sensitivity used by the first USB mouse, and the second HID descriptor The symbology conforms to the first sensitivity setting. The display controller reports the second HID descriptor to the host through the USB hub, so that the host controls the cursor of the operating system according to the second HID descriptor.

In some embodiments, when the display device and the first USB mouse are produced by the same manufacturer, the display controller learns the first USB signal of the first USB mouse from the USB signal reported by the first USB mouse. A device identifier and its corresponding first sensitivity, and the first sensitivity is automatically stored as the first sensitivity setting.

In other embodiments, when the display device and the first USB mouse are produced by different manufacturers or the display controller cannot know the first USB mouse from the USB signal reported by the first USB mouse the first sensitivity corresponding to the first device identifier, the display controller displays an on-screen display interface on the display module for setting the first sensitivity of the first USB mouse and storing it as the first sensitivity Sensitivity setting.

In some embodiments, the display controller calculates a ratio between the first sensitivity and the second sensitivity, and reports the second USB mouse to the X-axis in the first HID descriptor of the display controller The displacement amount and the Y-axis displacement amount are multiplied by the ratio to obtain the second HID descriptor.

In some embodiments, the display controller encodes the second HID descriptor as a USB signal and transmits the USB signal to the host through the USB hub, and the host decodes the USB signal to obtain the second HID descriptor, and control the cursor of the operating system according to the second HID descriptor.

The present invention further provides a mouse sensitivity synchronization method for a display device, wherein the display device includes a display module, a display controller, a first universal serial bus (USB) interface and a USB hub. The display device is electrically connected to a host, the host runs an operating system, and the first USB interface is electrically connected to the display controller. The method includes: connecting a first USB mouse to the USB interface, wherein the first USB mouse uses a first sensitivity; when a second USB mouse replaces the first USB mouse to connect to the first USB The interface or the second USB mouse is connected to the second USB interface of the display device, and the display controller is used to adjust the second USB mouse to report to the first Human Interface Device (HID) descriptor of the display controller to generate a second HID descriptor, wherein the second sensitivity used by the second USB mouse is different from the first sensitivity used by the first USB mouse, and the second HID descriptor is aligned with the first sensitivity; and The display controller reports the second HID descriptor to the host through the USB hub, so that the host controls the cursor of the operating system according to the second HID descriptor.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, a preferred embodiment is exemplified below, and is described in detail as follows in conjunction with the accompanying drawings.

FIG. 1A is a block diagram of a computer system according to an embodiment of the present invention. The computer system 10 may be, for example, a personal computer or a server equipped with a display device. As shown in FIG. 1A , the computer system 10 includes a host 100 and a display device 200 , wherein the host 100 is electrically connected to the display device 200 . The host 100 includes, for example, a processing unit 110 , a graphics processing unit 120 , a memory unit 130 , a storage device 140 , and one or more transmission interfaces 150 . The processing unit 110 , the graphics processing unit 120 , the memory unit 130 , the storage device 140 and the transmission interface 150 are coupled to each other through the system bus 111 . The processing unit 110 may be, for example, a central processing unit (CPU), a general-purpose processor, or the like, but the invention is not limited thereto. The graphics processing unit 120 can be, for example, a graphics processing unit on a display card or a graphics processing unit integrated into the processor 110 .

The memory unit 130 is a random access memory, such as a dynamic random access memory (DRAM) or a static random access memory (SRAM), but the invention is not limited thereto. The storage device 140 is a non-volatile memory, such as a hard disk drive, a solid-state disk, and a flash memory. , or a read-only memory, but the invention is not limited to this.

The transmission interface 150 may include a wired transmission interface and/or a wireless transmission interface, wherein the wired transmission interface may include: a High Definition Multimedia Interface (HDMI), a DisplayPort (DP) interface, an embedded display port ( embedded DisplayPort (eDP), interface Universal Serial Bus (USB) interface, USB Type-C interface, Thunderbolt interface, Digital Video Interface (DVI), Video Graphics Array (VGA) interface, general purpose Input Output (GPIO) interface, Universal Asynchronous Transceiver Transmitter (UART) interface, Serial Peripheral Interface (SPI) interface, Integrated Circuit Bus (I2C) interface, or a combination thereof, and the wireless transmission interface may include: Bluetooth ( Bluetooth), WiFi, Near Field Communication (NFC) interface, etc., but the present invention is not limited thereto.

For example, the storage device 140 can store one or more application programs 141, an operating system 142 (eg, can be Windows, Linux, MacOS, etc.), and the processing unit 110 stores the one or more application programs 141 and the operating system 142 is read to memory unit 130 and executed. For example, the graphics processing unit 120 can perform the drawing processing of the application program executed by the processing unit 110 to generate an image signal including one or more images, and transmit the image signal to the display through the transmission interface 150 (eg, HDMI interface or DisplayPort interface). device 200.

The display device 200 can be, for example, a flat panel display, a television, a projector, a computer screen, etc., but the present invention is not limited thereto. The display device 200 includes a display controller 210 , a display module 220 , a storage unit 230 , an image buffer 240 , a transmission interface 250 , an input interface 260 , and a hub (HUB) 270 . The transmission interface 250 may include a wired transmission interface and/or a wireless transmission interface, wherein the wired transmission interface may include: a High Definition Multimedia Interface (HDMI), a DisplayPort (DP) interface, an embedded display port ( embedded DisplayPort (eDP), Universal Serial Bus (USB) interface, USB Type-C interface, Thunderbolt interface, Digital Video Interface (DVI), Video Graphics Array (VGA) interface, general purpose input Output (GPIO) interface, Universal Asynchronous Transceiver Transmitter (UART) interface, Serial Peripheral Interface (SPI) interface, Integrated Circuit Bus (I2C) interface, or a combination thereof, and the wireless transmission interface may include: Bluetooth ), WiFi, a Near Field Communication (NFC) interface, etc., but the present invention is not limited thereto.

The display controller 210 can be, for example, an application-specific integrated circuit, a system-on-chip, a processor, or a microcontroller, but the invention is not limited thereto.

The display module 220 can be, for example, a liquid crystal panel, a light-emitting diode (light-emitting diode) panel, an organic light-emitting diode (organic light-emitting diode) panel, a cathode ray tube (cathode ray) tube), electronic ink (E-Ink) display module, electroluminescent (electroluminescent) display module, plasma (Plasma) display module, projection (projection) display module, quantum dot (Quantum Dot) display module , but the present invention is not limited to this.

The storage unit 230 can be, for example, a non-volatile memory, such as read only memory (ROM), erasable programmable read only memory (EPROM), and electronically erasable programmable read only memory (EEPROM). The storage unit 230 is used for storing the firmware 231 related to the display device 200 and the on-screen-display (OSD) interface 232 . The storage unit 230 may be external to the display controller 210 , or may be integrated into the display controller 210 , for example.

The firmware 231 includes, for example, display settings, Extended Display Identification Data (EDID) and display settings of the on-screen display interface of the display device 200 . The extended display capability identification data includes, for example, the manufacturer of the display device 200 , the product name, the resolution, the number of displayed frames per second, and the like. The display settings include, for example, settings of the display device 200 such as brightness, contrast, sharpness, and color temperature.

In one embodiment, the display controller 210 can read the program codes of the firmware 231 and the OSD interface 232 stored in the storage unit 230 through a bus (eg, I2C bus), and set relevant display parameters accordingly . In addition, the display controller 210 can also transmit the extended display capability identification data of the display device 200 to the host computer 100 through the transmission interface 250 (for example, an image transmission channel or a data transmission channel) for the processing unit 110 in the host computer 100 and the host computer 100 . The graphics processing unit 120 sets the resolution of the image signal to be output and the related synchronization signal. The on-screen display interface 232 includes, for example, an OSD Menu and options, an information dashboard, a timer, a counter, a crosshair, a specific symbol, a specific color, a specific text, or a combination thereof, but The present invention is not limited to this.

The image buffer 240 can be, for example, a volatile memory (such as a dynamic random access memory) or a non-volatile memory (such as a flash memory), which is used to store images to be played on the display module 220 . Outputting an image, wherein the host 100 or the display controller 210 can overlay one or more on-screen display interfaces 232 with a specific one of the image signals stored in the image buffer 240 according to an on-screen display enable signal generated by the host 100 area to generate the output image.

The input interface 260 is used to control the menu displayed on the screen of the display device 200 . The input interface 260 can be implemented, for example, by a five-way joystick 262 or by five physical buttons 261, so as to implement commands such as up, down, left, right, and confirmation. The hub 270 is, for example, a USB hub, and the transmission interface 250 includes a USB interface, and the host 100 can transmit data to the display controller 210 through the hub 270 through the USB interfaces in the transmission interfaces 150 and 250 , and the display controller 210 can also transmit data through the hub 270 . The USB interface or the USB Type-C interface (ie, the data transmission channel) in the transmission interfaces 150 and 250 transmits data to the host 100 through the hub 270 .

In one embodiment, when the user operates one of the directions of the five-direction joystick 262 (or presses one of the physical buttons 261 , the display controller 210 can read the firmware 231 from the storage unit 230 and the display on the screen). The screen in the display interface 232 displays the code of the menu and related options, and the menu and related options are displayed on the display module 220. In one embodiment, the user can operate on the input interface 260 to control The on-screen display menu of the display device 200 is used to adjust the brightness, contrast, sharpness, color temperature of the display module 220, or to enable or disable other interfaces in the on-screen display interface 232. For example, the firmware 231 can be regarded as a display It is the default firmware of the device 200 , and the user can use the five-way joystick 262 (or the physical button 261 ) to control the option settings of the on-screen display interface 232 displayed by the display device 200 .

In one embodiment, the display controller 210 includes an image scaler 211 and a timing controller 212 . The display controller 210 receives the image signal from the host 100 and/or the image signal from other hosts through the transmission interface 250, and the image scaler 211 can perform image scaling and/or image scaling on the image in the received image signal The superimposing process is performed to meet the resolution of the display module 220 , and the image after the image scaling process (for example, called the output image) is stored in the image buffer 240 . The timing controller 212 controls the display module 220 to read and play the output image from the image buffer 240 .

In another embodiment, the display controller 210 may include the timing controller 212 , and the resolution of the image signal from the host 100 is consistent with the resolution of the display module 220 , so the display controller 210 receives the image from the host 100 After the signal, the image signal can be stored in the image buffer 240 without the need for image scaling. The timing controller 220 can read the output image from the image buffer 240 and control the display module 220 to play the output image.

In one embodiment, the display device 200 further includes USB interfaces 251 and 252 , and both the USB interfaces 251 and 252 are electrically connected to the display controller 210 . The USB mice 281 and 282 (eg, USB mice) are connected to the USB interfaces 251 and 252 respectively, and the USB mice 281 and 282 can have different sensitivities, wherein the sensitivities can be, for example, dots per inch. per inch, DPI).

For convenience of description, the USB mouse 281 is, for example, a mouse that the user is used to, and the USB mouse 282 is, for example, a mouse replaced by the user, and the sensitivity of the USB mouse 281 is higher than that of the USB mouse 282 . In this embodiment, the USB mice 281 and 282 need not be connected to the display device 200 at the same time. For example, the user can replace the USB mouse 281 with the USB mouse 282, and the USB mouse 282 can be connected to the USB interfaces 251 and 252. one of them. In addition, the USB mice 281 and 282 can also be connected to the USB interfaces 251 and 252 respectively at the same time.

In this embodiment, the display controller 210 can provide a physical vendor ID and a product ID for the host 100 to identify, and can connect the USB mice 281 and 282 connected to the hub 270 Declared as a USB human interface device (HID). For the host 100, when the USB mouse 281 or 282 is connected to the display device 200, the operating system 142 can identify the USB human interface device declared by the display controller 210 through a USB channel (eg, a data transmission channel), even if the USB The mice 281 and 282 are connected to the display device 200 at the same time, and the operating system 142 also only recognizes the above-mentioned USB human interface device announced by the display controller 210 . In addition, the USB mice 281 and 282 are cursors drawn by the control operating system 142 .

It should be noted that the USB signals 291 and 292 reported by the USB mice 281 and 282 do not carry any sensitivity information (such as DPI information), and when the host 100 does not install any specific manufacturer's mouse driver, the host Neither 100 nor the display device 200 can directly obtain the sensitivity of the USB mice 281 and 282 . If the host 100 has installed a mouse driver of a specific manufacturer, but the USB mice 281 and 282 are not manufactured by the specific manufacturer, the host 100 and the display device 200 also cannot directly obtain the sensitivity of the USB mice 281 and 282 .

Generally, the user cannot use professional testing equipment (such as a robotic arm) to control the mouse to move a fixed distance (such as 1 inch) in the same direction to know the number of pixels moved by the cursor of the operating system 142, and then calculate Sensitivity of USB mice 281 and 282. The user can know the sensitivity of the USB mice 281 and 282 usually through the product model of the USB mice 281 and 282 and their sensitivity settings (if there are multiple settings), and then find the corresponding sensitivity values.

Specifically, the USB mice 281 and 282 report HID descriptors to the host 100 at a fixed rate (for example, the reporting rate in the USB protocol is 125 Hz), and the controllers (not shown) in the USB mice 281 and 282 shown) encodes the HID descriptors of USB mice 281 and 282 as USB signals 291 and 292, respectively. The HID descriptor can define how many packets the USB mouse 281 and 282 supports, the packet size, and the purpose of each byte and bit in the packet, such as buttons (at least left, right, and wheel/middle buttons) and X The movement amount of the axis/Y axis (for example, both are 8-bit signed numbers). For example, each HID descriptor can be represented by a packet of 3 bytes, as shown in Table 1: bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 byte 0 padding bits left button middle button right click Byte 1 X-axis movement amount Byte 2 Y-axis movement amount Table 1

In addition, the display controller 210 can support decoding and encoding of the USB protocol, and the USB signals 291 and 292 are first decoded by the display controller 210 to obtain the HID descriptors reported by the USB mice 281 and 282 . For convenience of description, in the following embodiments, it is assumed that the sensitivity of the USB mouse 281 is 800 DPI and the sensitivity of the USB mouse 282 is 400 DPI. Assuming that the resolution of the display module 220 is 1920×1080, if the USB mouse 281 is moved to the right by 1 inch, the cursor 20 of the operating system 142 will move from the position A to the position C. If the USB mouse 282 is moved 1 inch to the right, the cursor 20 of the operating system 142 will move from position A to position B, as shown in FIG. 2 .

In the first situation, the USB mice 281 and 282 do not have the function of firmware update. If the display device 200 and the USB mouse 281 are manufactured by the same manufacturer, the display controller 210 can learn the device ID and the related sensitivity setting of the USB mouse 281 from the USB signal reported by the USB mouse 281 , so the display controller 210 can know that the sensitivity of the USB mouse 281 is 800 DPI. If the USB mouse 281 is the user's favorite mouse, the user can select a corresponding option in the OSD interface 232 of the display device 200 to store the sensitivity of the USB mouse 281 as the first sensitivity setting (for example, it can be stored in the storage unit 230 ). the firmware 231).

If the display device 200 and the USB mouse 281 are not manufactured by the same manufacturer, the display controller 210 can learn the device ID of the USB mouse 281 from the USB signal reported by the USB mouse 281 , but cannot obtain the device ID. Know the relevant sensitivity settings of the USB mouse 281. At this time, when the user can know the product model of the USB mouse 281 and determine its sensitivity, the user can input the sensitivity of the USB mouse 281 as 800 DPI in the OSD interface 232 of the display device 200 and store it as the first Sensitivity setting (for example, can be stored in the firmware 231 of the storage unit 230).

When the user replaces the USB mouse 281 with the USB mouse 282 (ie, is connected to the USB interface 251 ) or connects the USB mouse 282 to the USB interface 252 , the display device 200 and the USB mouse 282 are also of the same manufacturer. Manufactured or not by the same manufacturer. If the display device 200 and the USB mouse 282 are manufactured by the same manufacturer, the display controller 210 can learn the device ID and the related sensitivity setting of the USB mouse 282 from the USB signal reported by the USB mouse 282 , so the display controller 210 can know that the sensitivity of the USB mouse 282 is 400 DPI. At this time, when the mouse sensitivity synchronization function of the display device 200 is enabled, in order to synchronize the sensitivity of the USB mice 281 and 282 , the display controller 210 can adjust the X-axis displacement amount in the HID descriptor of the USB mouse 282 And the Y-axis displacement is multiplied by the corresponding multiple N. In this embodiment, since the sensitivities of the USB mice 281 and 282 are 800DPI and 400DPI, respectively, the above-mentioned multiple N=800/400=2, which means that the display controller 210 can use the HID descriptor of the USB mouse 282 (for example, The X-axis displacement and the Y-axis displacement in the first HID descriptor) are multiplied by 2, so the sensitivity of the USB mouse 282 can be amplified by a factor of 2, which is equal to the sensitivity of the USB mouse 281 . Next, the display controller 210 transmits the modified HID descriptor of the USB mouse 282 (eg, the second HID descriptor) to the hub 270 . The hub 270 can encode the second HID descriptor into a USB signal, and transmit the USB signal to the host 100 through the transmission interfaces 250 and 150 (eg, a USB interface or a USB Type-C interface). The host 100 can obtain the second HID descriptor after decoding the above-mentioned USB signal, and perform corresponding operations on the cursor of the operating system 142 according to the content of the second HID descriptor.

If the display device 200 and the USB mouse 282 are not manufactured by the same manufacturer, the display controller 210 can learn the device ID of the USB mouse 282 from the USB signal reported by the USB mouse 282 , but cannot obtain the device ID. Know the relevant sensitivity settings of the USB mouse 282. At this time, when the user can know the product model of the USB mouse 282 and determine its sensitivity, the user can input the sensitivity of the USB mouse 282 as 400 DPI in the OSD interface 232 of the display device 200 and store it as a second sensitivity Sensitivity setting (for example, can be stored in the firmware 231 of the storage unit 230). Similarly, the display controller 210 can multiply the X-axis displacement and the Y-axis displacement in the HID descriptor of the USB mouse 282 by 2, so that the sensitivity of the USB mouse 282 can be amplified by a factor of 2, which is equal to that of the USB mouse. 281 sensitivity.

It should be noted that in the above embodiment, the lower second sensitivity is used to align the higher first sensitivity, and the user can also choose to align the lower first sensitivity with the higher first sensitivity in the related options of the OSD interface 232. The second sensitivity means that the above-mentioned multiple N=1/2, so the display controller 210 can multiply the X-axis displacement and the Y-axis displacement in the HID descriptor of the USB mouse 281 by 1/2, so that the USB The sensitivity of the mouse 281 is reduced by a factor of 1/2 and is equal to the sensitivity of the USB mouse 282 . When the sensitivity of the USB mouse 282 is aligned with the sensitivity of the USB mouse 281, the user can use the USB mouse 282 to communicate with the USB mouse without modifying the settings related to the sensitivity of the mouse in the operating system 142 or in the application program/computer game. 281 same move operation.

In the second scenario, the USB mice 281 and 282 and the display device 200 are produced by the same manufacturer and the USB mice 281 and 282 have the same product model. In addition, the USB mice 281 and 282 use the same optical sensor with multiple sensitivity settings, and the USB mice 281 and 282 have the function of firmware update. Therefore, the display controller 210 can read the firmware of the USB mouse 281 and related settings (which may include sensitivity, rate of return, etc.) and store them as the first firmware settings. Next, when the display controller 210 wants to synchronize the sensitivity of the USB mice 281 and 282 , the display controller 210 updates the first firmware setting to the firmware of the USB mouse 282 to make the sensitivity of the USB mouse 282 match the first firmware. The sensitivity in the body setting is the same.

In the third scenario, the USB mice 281 and 282 and the display device 200 are produced by the same manufacturer but the USB mice 281 and 282 have different product models. In addition, the USB mice 281 and 282 use different optical sensors, and the USB mouse 282 has the function of firmware update. Therefore, the display controller 210 can learn the sensitivity of the optical sensors of the USB mice 281 and 282 from the USB signals 291 and 292 reported by the USB mice 281 and 282 .

The firmware 231 of the device 200 is displayed and a look-up table (not shown) of the firmware format and setting of the relevant mouse of the manufacturer is recorded. Therefore, the display controller 210 can read the firmware and related sensitivity settings of the USB mouse 281 and store them as the first firmware settings. Next, when the display controller 210 wants to synchronize the sensitivity of the USB mice 281 and 282 , the display controller 210 converts the first firmware setting into the second firmware suitable for the USB mouse 282 according to the lookup table in the firmware 231 and update the second firmware setting to the firmware of the USB mouse 282 so that the sensitivity of the USB mouse 282 is the same as that in the first firmware setting.

FIG. 1B is a block diagram of a computer system according to another embodiment of the present invention.

FIG. 1B is similar to FIG. 1A, the difference is that the display device 200 in FIG. 1B further includes a mouse controller 271, which is electrically connected to the display controller 210 and the hub 270, and the mouse controller 271 is Set outside the hub 270 . The mouse controller 271 can be implemented by, for example, an embedded microcontroller or a mouse integrated circuit (IC) for providing a physical vendor ID and product ID ) for the host 100 to recognize and can declare the USB mice 281 and 282 connected to the hub 270 as human interface devices (HIDs).

For the host 100, when the USB mouse 281 or 282 is connected to the display device 200, the operating system 142 can identify the USB human interface device declared by the mouse controller 271 through a USB channel (eg, a data transmission channel), even if The USB mice 281 and 282 are connected to the display device 200 at the same time, and the operating system 142 also only recognizes the above-mentioned USB human interface device declared by the mouse controller 271 . In addition, the USB mice 281 and 282 are cursors drawn by the control operating system 142 .

In this embodiment, the display controller 210 may transmit the modified HID descriptor of the USB mouse 282 (eg, the second HID descriptor) to the hub 270 . The hub 270 can encode the second HID descriptor into a USB signal, and transmit the USB signal to the host 100 through the transmission interfaces 250 and 150 (eg, a USB interface or a USB Type-C interface). The host 100 can obtain the second HID descriptor after decoding the above-mentioned USB signal, and perform corresponding operations on the cursor of the operating system 142 according to the content of the second HID descriptor.

FIG. 1C is a block diagram of a computer system according to another embodiment of the present invention.

FIG. 1C is similar to FIG. 1A, except that the hub 270 in the display device 200 in FIG. 1C further includes a mouse controller 271 and a microcontroller 276. As shown in FIG. The mouse controller 271 can be implemented by, for example, an embedded microcontroller or a mouse integrated circuit (IC) for providing a physical vendor ID and product ID ) for the host 100 to recognize and can declare the USB mice 281 and 282 connected to the hub 270 as human interface devices (HIDs). In some embodiments, the microcontroller 276 and the mouse controller 271 in the hub 270 are separate physical components. In other embodiments, the functions of the mouse controller 271 can be integrated into the microcontroller 276 , and the firmware executed by the microcontroller 276 includes the related functions of the mouse controller 271 .

For the host 100, when the USB mouse 281 or 282 is connected to the display device 200, the operating system 142 can identify the USB human interface device declared by the mouse controller 271 through a USB channel (eg, a data transmission channel), even if The USB mice 281 and 282 are connected to the display device 200 at the same time, and the operating system 142 also only recognizes the above-mentioned USB human interface device declared by the mouse controller 271 . In addition, the USB mice 281 and 282 are cursors drawn by the control operating system 142 .

In this embodiment, the display controller 210 may transmit the modified HID descriptor of the USB mouse 282 (eg, the second HID descriptor) to the hub 270 . The hub 270 can encode the second HID descriptor into a USB signal, and transmit the USB signal to the host 100 through the transmission interfaces 250 and 150 (eg, a USB interface or a USB Type-C interface). The host 100 can obtain the second HID descriptor after decoding the above-mentioned USB signal, and perform corresponding operations on the cursor of the operating system 142 according to the content of the second HID descriptor.

FIG. 3 is a flowchart of a method for synchronizing mouse sensitivity according to an embodiment of the present invention. Please refer to Figure 1A and Figure 3 at the same time.

In step S310, the first USB mouse (eg, the USB mouse 281) is connected to the USB interface 251 of the display device 200, and the first sensitivity used by the first USB mouse is stored as the first sensitivity setting. For example, if the display device 200 and the first USB mouse are produced by the same manufacturer, the display controller 210 can learn the device identifier of the first USB mouse ( device ID) and its corresponding first sensitivity, and the first sensitivity is automatically stored in the first sensitivity setting. If the display device 200 and the first USB mouse are produced by different manufacturers or the display controller 210 cannot know the first sensitivity corresponding to the device identifier of the first USB mouse from the USB signal reported by the first USB mouse, Then, the display controller 210 cannot read the firmware-related settings of the first USB mouse, so the display device 200 can provide the OSD interface 232 for the user to set the first sensitivity of the first USB mouse and store it as the first sensitivity setting.

In step S320 , when the second USB mouse (eg, the USB mouse 282 ) replaces the first USB mouse to connect to the USB interface 251 of the display device 200 , the display controller 210 adjusts the report of the second USB mouse to the display controller 210 the first HID descriptor to generate a second HID descriptor, wherein the second sensitivity used by the second USB mouse is different from the first sensitivity used by the first USB mouse, and the second HID descriptor is consistent with the first HID descriptor. A sensitivity setting.

For example, the second sensitivity used by the second USB mouse may be higher or lower than the first sensitivity used by the first USB mouse. In addition, the second USB mouse can also be connected to the USB interface 252 of the display device 200 . Similarly, if the display device 200 and the first USB mouse are of the same manufacturer, the display controller 210 can learn the device ID of the second USB mouse from the USB signal reported by the second USB mouse and the second sensitivity used. If the display device 200 and the second USB mouse are of different manufacturers, the display controller 210 cannot read the firmware-related settings of the second USB mouse, so the user can manually configure the second USB mouse on the OSD interface 232 of the display device 200 The second sensitivity of the USB mouse.

In addition, the display controller 210 can calculate the ratio N of the first sensitivity and the second sensitivity, and report the second USB mouse to the display controller 210 by multiplying the X-axis displacement and the Y-axis displacement in the first HID descriptor Take the ratio N to get the second HID descriptor.

In step S330, the display controller 210 reports the second HID descriptor to the host 100 through the USB hub, so that the host 100 controls the cursor of the operating system 142 according to the second HID descriptor. For example, because the X-axis displacement and the Y-axis displacement in the second HID descriptor have been adjusted to align with the X-axis displacement and the Y-axis displacement in the first sensitivity, for the host 100, the second The sensitivity used by the USB mouse is the same as the first sensitivity used by the first USB mouse.

In summary, the present invention provides a display device and a mouse sensitivity synchronization method thereof, which can automatically synchronize the sensitivity of different mice connected to the display device, and the user does not need to change the sensitivity of the old mouse that was originally used. Sensitivity setting allows a new mouse with a different sensitivity to operate on the console the same as using the sensitivity setting of an old mouse, thereby enhancing the user experience.

The use of words such as "first", "second", "third", etc. in the claims is used to modify the elements in the claims, and is not used to indicate that there is a priority order, antecedent relationship, or an element between them Prior to another element, or chronological order in which method steps are performed, is only used to distinguish elements with the same name.

Although the present invention is disclosed above with preferred embodiments, it is not intended to limit the scope of the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the appended patent application.

10: Computer System 20: Cursor 100: host 200: Display device 110: Processing unit 111: System busbar 120: Graphics Processing Unit 130: Memory unit 140: Storage Device 141: Apps 142: Operating System 150: Transmission interface 210: Display Controller 211: Image resizer 212: Timing Controller 220: Display Module 230: Storage Unit 231:Firmware 232: Display interface on the screen 240: Image buffer 250: Transmission interface 251, 252: USB interface 260: input interface 261: Entity button 262: Five-way joystick 270: Hub 271: Mouse Controller 276: Microcontroller 281, 282: USB mouse 291, 292: USB signal S310-S330: Steps

FIG. 1A is a block diagram of a computer system according to an embodiment of the present invention. FIG. 1B is a block diagram of a computer system according to another embodiment of the present invention. FIG. 1C is a block diagram of a computer system according to another embodiment of the present invention. FIG. 2 is a schematic diagram of the moving operation of the cursor of the operating system under different mouse sensitivities according to an embodiment of the present invention. FIG. 3 is a flowchart of a method for synchronizing mouse sensitivity according to an embodiment of the present invention.

10: Computer System

100: host

200: Display device

110: Processing unit

111: System busbar

120: Graphics Processing Unit

130: Memory unit

140: Storage Device

141: Apps

142: Operating System

150: Transmission interface

210: Display Controller

211: Image resizer

212: Timing Controller

220: Display Module

230: Storage Unit

231:Firmware

232: Display interface on the screen

240: Image buffer

250: Transmission interface

251, 252: USB interface

260: input interface

261: Entity button

262: Five-way joystick

270: Hub

281, 282: USB mouse

291, 292: USB signal

Claims (14)

A display device is electrically connected to a host, wherein the host runs an operating system, the display device comprises: a display module; a display controller for controlling the display screen of the display module; a first general a serial bus (USB) interface electrically connected to the display controller, and a first USB mouse is connected to the first USB interface, wherein the first USB mouse uses a first sensitivity; and a USB hub; wherein the display controller stores the first sensitivity used by the first USB mouse as a first sensitivity setting; wherein when a second USB mouse replaces the first USB mouse to connect to the first USB interface Or the second USB mouse is connected to the second USB interface of the display device, and the display controller adjusts the report of the second USB mouse to the first Human Interface Device (HID) descriptor of the display controller to generate the first human interface device (HID) descriptor. Two HID descriptors, wherein the second sensitivity used by the second USB mouse is different from the first sensitivity used by the first USB mouse, and the second USB mouse recorded in the second HID descriptor After the adjusted second sensitivity matches the first sensitivity setting, the display controller reports the second HID descriptor to the host through the USB hub so that the host controls the host according to the second HID descriptor Operating system cursor. The display device of claim 1, wherein when the display device and the first USB mouse are produced by the same manufacturer, the display controller learns the first USB mouse from a USB signal reported by the first USB mouse The first device identifier of the mouse and its corresponding first sensitivity, and the first sensitivity is automatically stored as the first sensitivity setting. The display device of claim 1, wherein when the display device and the first USB mouse are produced by different manufacturers or the display controller cannot learn the first USB signal from the USB signal reported by the first USB mouse the first sensitivity corresponding to the first device identifier of the mouse, the display controller displays an on-screen display interface on the display module for setting the first sensitivity of the first USB mouse and storing it as the The first sensitivity setting. The display device of claim 1, wherein the display controller calculates a ratio between the first sensitivity and the second sensitivity, and reports the second USB mouse to the first HID descriptor of the display controller The X-axis displacement and Y-axis displacement are multiplied by the ratio to obtain the second HID descriptor. The display device of claim 1, wherein the display controller provides a manufacturer identifier and a product identifier for the host to identify, and declares the first USB mouse and the second USB mouse as a USB human interface device, and the display controller encodes the second HID descriptor into a USB signal and transmits the USB signal to the host through the USB hub, and the host decodes the USB signal to obtain the second HID descriptor, and control the cursor of the operating system according to the second HID descriptor. The display device of claim 1, further comprising: a mouse controller, And the mouse controller is arranged outside the USB hub, and the mouse controller provides a manufacturer identifier and a product identifier for the host to identify, and connects the first USB mouse and the second USB The mouse is declared as a USB human interface device, wherein the USB hub encodes the second HID descriptor as a USB signal and transmits the USB signal to the host through the USB hub, and the host decodes the USB signal to obtain The second HID descriptor controls the cursor of the operating system according to the second HID descriptor. The display device of claim 1, wherein the USB hub further comprises a mouse controller and a microcontroller, and the mouse controller provides a manufacturer identifier and a product identifier for the host to identify, and associates the The first USB mouse and the second USB mouse are declared as a USB human interface device, wherein the microcontroller encodes the second HID descriptor as a USB signal and transmits the USB signal to the host through the USB hub , and the host decodes the USB signal to obtain the second HID descriptor, and controls the cursor of the operating system according to the second HID descriptor. A mouse sensitivity synchronization method for a display device, wherein the display device includes a display module, a display controller, a first universal serial bus (USB) interface and a USB hub, wherein the display device is electrically Connecting to a host, the host running an operating system, and the first USB interface being electrically connected to the display controller, the method includes: connecting a first USB mouse to the first USB interface, wherein the first USB interface is connected to the first USB interface. A USB mouse uses the first sensitivity; When a second USB mouse replaces the first USB mouse and is connected to the first USB interface or the second USB mouse is connected to the second USB interface of the display device, the display controller is used to adjust the second USB interface The mouse reports to the first human interface device (HID) descriptor of the display controller to generate a second HID descriptor, wherein the second sensitivity used by the second USB mouse is the same as that used by the first USB mouse The first sensitivity is different, and the adjusted second sensitivity of the second USB mouse recorded in the second HID descriptor conforms to the first sensitivity setting; and the display controller is used to describe the second HID The symbol is reported to the host through the USB hub so that the host controls the cursor of the operating system according to the second HID descriptor. The mouse sensitivity synchronization method of claim 8, further comprising: when the display device and the first USB mouse are produced by the same manufacturer, using the display controller to obtain the USB signal from the USB signal reported by the first USB mouse The first device identifier of the first USB mouse and the corresponding first sensitivity are known, and the first sensitivity is automatically stored as the first sensitivity setting. The mouse sensitivity synchronization method of claim 8, further comprising: when the display device and the first USB mouse are produced by different manufacturers or the display controller cannot obtain the information from the USB signal reported by the first USB mouse Knowing the first sensitivity corresponding to the first device identifier of the first USB mouse, using the display controller to display an on-screen display interface on the display module for setting the first USB mouse a sensitivity and stored as the first Sensitivity setting. The mouse sensitivity synchronization method of claim 8, wherein the display controller is used to adjust the second USB mouse to report to a first Human Interface Device (HID) descriptor of the display controller to generate a second HID descriptor Including: calculating a ratio between the first sensitivity and the second sensitivity, and multiplying the X-axis displacement and the Y-axis displacement in the first HID descriptor reported by the second USB mouse to the display controller by the ratio to obtain the second HID descriptor. The mouse sensitivity synchronization method of claim 8, wherein the display controller provides a manufacturer identifier and a product identifier for the host to identify, and declares the first USB mouse and the second USB mouse as one The USB human interface device, wherein the step of using the display controller to report the second HID descriptor to the host through the USB hub so that the host controls the cursor of the operating system according to the second HID descriptor includes: using the display The controller encodes the second HID descriptor into a USB signal and transmits the USB signal to the host through the USB hub; uses the host to decode the USB signal to obtain the second HID descriptor; and according to the second HID The descriptor controls the cursor for the operating system. The mouse sensitivity synchronization method of claim 8, wherein the display device further comprises a mouse controller, and the mouse controller is disposed outside the USB hub, and the mouse controller provides a manufacturer identifier and a product identifier for the host to identify, and declare the first USB mouse and the second USB mouse as a USB human interface device, The step of using the display controller to report the second HID descriptor to the host through the USB hub so that the host controls the cursor of the operating system according to the second HID descriptor includes: using the USB hub to report the first HID descriptor to the host. Two HID descriptors are encoded into USB signals and transmitted to the host through the USB hub; decode the USB signals by the host to obtain the second HID descriptor; and control the operation according to the second HID descriptor The cursor of the system. The mouse sensitivity synchronization method of claim 8, wherein the USB hub further comprises a mouse controller and a microcontroller, and the mouse controller provides a manufacturer identifier and a product identifier for the host to identify, and declare the first USB mouse and the second USB mouse as a USB human interface device, wherein the display controller is used to report the second HID descriptor to the host through the USB hub so that the host can rely on The step of controlling the cursor of the operating system by the second HID descriptor includes: encoding the second HID descriptor into a USB signal by the microcontroller and transmitting the USB signal to the host through the USB hub; using the host system Decoding the USB signal to obtain the second HID descriptor; and controlling the cursor of the operating system according to the second HID descriptor.

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