CN113971939A - Display system and display device - Google Patents
Display system and display device Download PDFInfo
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- CN113971939A CN113971939A CN202010722498.8A CN202010722498A CN113971939A CN 113971939 A CN113971939 A CN 113971939A CN 202010722498 A CN202010722498 A CN 202010722498A CN 113971939 A CN113971939 A CN 113971939A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1407—General aspects irrespective of display type, e.g. determination of decimal point position, display with fixed or driving decimal point, suppression of non-significant zeros
Abstract
A display system and a display device, the display device including: a Universal Serial Bus (USB) Type-C connector for connecting to a portable device, wherein the USB signal between the display device and the portable device comprises an image transmission channel and a data transmission channel; a display panel; a multiplexing circuit for separating the image transmission channel and the data transmission channel of the USB signal; a switching circuit for controlling the operation mode of the multiplexing circuit; and a display controller for controlling the display mode of the display panel. The display controller transmits a control signal to the switching circuit to control the multiplexing circuit to switch to the first operation mode in response to the display panel being in a first display mode. In response to the multiplexing circuit being in the first operation mode, the portable device is the master control end in the image transmission channel and is the device end in the data transmission channel.
Description
Technical Field
The present invention relates to display devices, and particularly to a display system and a display device.
Background
Display devices (such as televisions or computer screens) on the market today have more and more functions and can be connected to various image-source devices, such as personal computers and portable devices. In addition, the portable device itself is equipped with a storage medium, but because the portable device is limited to the conventional display device, when the personal computer and the portable device are used as the image source, the personal computer cannot access the data of the storage medium in the portable device, and thus the user experience is reduced.
Disclosure of Invention
The present invention provides a display system and a display device to solve the above problems.
The present invention provides a display device including: a Universal Serial Bus (USB) Type-C connector for connecting to a portable device, wherein the USB signal between the display device and the portable device comprises an image transmission channel and a data transmission channel; a display panel; a multiplexing circuit for separating the image transmission channel and the data transmission channel of the USB signal; a switching circuit for controlling the operation mode of the multiplexing circuit; and a display controller for controlling the display mode of the display panel. The display controller transmits a control signal to the switching circuit to control the multiplexing circuit to switch to the first operation mode in response to the display panel being in a first display mode. In response to the multiplexing circuit being in the first operation mode, the portable device is the master control end in the image transmission channel and is the device end in the data transmission channel.
In some embodiments, the display controller receives the first video signal from a host through a first transmission interface of the display device and receives the second video signal from the portable device through the video transmission channel. In addition, the first display mode is a picture-in-picture mode or a picture-side-by-picture mode.
In some embodiments, the display device further comprises: and the USB hub is used for connecting at least one peripheral device and receiving a first data signal from the host through a second transmission interface of the display device, wherein the first data signal is sequentially transmitted to the portable device through the USB hub, the switching circuit and the multiplexing circuit in response to the first operation mode of the multiplexing circuit, so that the host can recognize the storage medium in the portable device and access the data in the storage medium.
In some embodiments, for the data transmission channel, the USB Type-C connector is a USB Type-C downstream port extended by the USB hub.
In some embodiments, the display device further includes an input interface for calling an on-screen display interface, and the on-screen display interface is used for selectively utilizing at least one peripheral device to control a display frame of the first image signal or the second image signal in the first display mode.
In some embodiments, when the first display mode is the PIP mode, the display controller sends a control signal to the switching circuit to connect the data signal of at least one peripheral device connected to the USB hub to the host or the portable device corresponding to the PIP mode.
The present invention also provides a display system comprising: a portable device and a display device. The display device includes: a Universal Serial Bus (USB) Type-C connector for connecting to the portable device, wherein the USB signal between the display device and the portable device comprises an image transmission channel and a data transmission channel; a display panel; a multiplexing circuit for separating the image transmission channel and the data transmission channel of the USB signal; a switching circuit for controlling the operation mode of the multiplexing circuit; and a display controller for controlling the display mode of the display panel. The display controller transmits a control signal to the switching circuit to control the multiplexing circuit to switch to the first operation mode in response to the display panel being in a first display mode. In response to the multiplexing circuit being in the first operation mode, the portable device is the master control end in the image transmission channel and is the device end in the data transmission channel.
Drawings
FIG. 1 is a diagram illustrating a display system according to an embodiment of the present invention.
Fig. 2A to 2C are schematic diagrams illustrating paths of image signals and data signals of a display system in different display modes according to an embodiment of the invention.
Description of the symbols
1: display system
10: electronic device
20: portable device
21: display screen
23: storage medium
31: image transmission channel
32: data transmission channel
33: transmission channel
50-52: dotted path
100: main unit
110: processing unit
111: system bus
120: graphics processing unit
130: memory unit
140: storage device
141: application program
142: operation system
152. 153-Transmission interface
200: display device
210: display controller
211: image scaler
212: time sequence controller
220: display module
230: memory cell
231. 232: firmware
233: on-screen display interface
240: image buffer
251 to 255: transmission interface
260: input interface
261: physical button
262: five-way control rod
270: USB concentrator
281: multiplexing circuit
282: switching circuit
283: control signal
284-285: channel
291. 292: peripheral device
Detailed Description
The following description is of the preferred embodiments of the invention and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the same. Reference must be made to the following claims for their true scope of the invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of further features, integers, steps, operations, elements, components, and/or groups thereof.
The use of the terms first, second, third and the like in the claims is used for modifying elements in the claims and is not intended to distinguish between elements having the same name, priority, or other relationship between elements, whether one element precedes another element, or whether a method step is performed in a chronological order.
FIG. 1 is a diagram illustrating a display system according to an embodiment of the present invention.
The display system 1 includes a host 100, a display device 200, and a portable device 20. The host 100 and the display device 200 may be regarded as the electronic device 10, and the electronic device 10 may be, for example, a personal computer, a notebook computer, a server, or a smart television equipped with a display device; in the electronic device 10, components other than the display device 200 are defined as a host. The display device 200 may be a liquid crystal display, a computer screen, an electronic billboard, a television or any device capable of displaying images. As shown in fig. 1, the electronic device 10 includes a host 100 and a display device 200, wherein the host 100 and the portable device 20 are both 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 transmission interfaces 152 and 153. The processing unit 110, the gpu 120, the memory unit 130, the storage device 140 and the transmission interface 153 are coupled to each other via the system bus 111. The processing unit 110 may be, for example, a Central Processing Unit (CPU), a general-purpose processor (general-purpose processor), and the like, but the invention is not limited thereto. The gpu 120 may be, for example, a gpu on a display card or a gpu 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 (non-volatile memory), such as a hard disk drive (hard disk drive), a solid-state disk (solid-state disk), a flash memory (flash memory), or a read-only memory (read-only memory), but the invention is not limited thereto.
For example, the storage device 140 may store one or more applications 141, an operating system 142 (e.g., Windows, Linux, MacOS, etc.), and the processing unit 110 reads the one or more applications 141 and the operating system 142 to the memory unit 130 and executes them. The gpu 120 may, for example, perform a drawing process of an application executed by the processing unit 110 to generate an image signal including one or more images, and transmit the image signal to the transmission interface 252 of the display device 200 through the transmission interface 152, wherein a channel between the transmission interfaces 152 and 252 may be referred to as an image transmission channel. The transmission interfaces 152 and 252 may be wired transmission interfaces and/or wireless transmission interfaces, wherein the wired transmission interfaces may include: a High Definition Multimedia Interface (HDMI), a DisplayPort (DP) Interface, an embedded DisplayPort (eDP), a Low Voltage Differential Signaling (LVDS) Interface, a Universal Serial Bus (USB) Interface, a USB Type-C Interface, a Thunderbolt Interface, a Digital Video Interface (DVI), a Video Graphics Array (VGA) Interface, a General Purpose Input and Output (GPIO) Interface, a Universal Asynchronous Receiver Transmitter (UART) Interface, a Serial Peripheral Interface (SPI) Interface, an integrated circuit bus (I2C) Interface, or a combination thereof, and the wireless transmission Interface may include: bluetooth (Bluetooth), Wi-Fi, Near Field Communication (NFC) interface, etc., although the invention is not limited thereto.
In addition, the processing unit 110 can transmit data to the transmission interface 253 of the display device 200 through the transmission interface 153, wherein the transmission interfaces 153 and 253 can be USB interfaces, for example, and can support USB3.1 and/or USB2.0 protocols. The channel between the transmission interfaces 153 and 253 can be referred to as a data transmission channel, for example, the host 100 and the display device 200 can transmit data through 4 super speed (SuperSpeed) channels and/or 2 full speed (FullSpeed) channels of the USB3.1 protocol. It should be noted that, the transmission interface 253 on the display device 200 is, for example, a connection Port of UFP (upstream Port) Type B, that is, when the host 100 and the display device 200 perform data transmission, the host 100 acts as a host and the display device 200 acts as a device.
In addition, the portable device 20 can be, for example, a smart phone, a tablet computer, or a notebook computer, and includes a display screen 21 for displaying a display, and a storage medium 23 (e.g., a non-volatile storage medium) for storing data. In addition, the portable device 20 can be connected to the transmission interface 251 of the display device 200 through the transmission interface 22, wherein the transmission interfaces 22 and 251 can be USB Type-C connectors, for example, and can support USB3.1Gen1 or above. In detail, the channels between the transmission interfaces 22 and 251 include an image transmission channel and a data transmission channel, for example, the portable device 20 can transmit image signals to the display device 200 through 2 super speed (SuperSpeed) channels of the USB Type-C interface, and can perform data transmission with the display device 200 through 2 super speed (SuperSpeed) channels and 2 high speed (HighSpeed) channels of the USB Type-C interface. Optionally, in the DisplayPort Alternate mode, the portable device 20 can transmit the video signal to the display device 200 through 4 super speed channels of the USB Type-C interface and can perform data transmission with the display device 200 through 2 high speed channels of the USB Type-C interface. It should be noted that the transmission interface 251 of the display device 200 is, for example, a connection port of ufp (upstream Facing port) Type B, which means that when the portable device 20 and the display device 200 perform data transmission, the portable device 20 acts as a host and the display device 200 acts as a device.
The display device 200 may be, for example, a flat panel display, a television, a projector, a computer screen, etc., but the invention is not limited thereto. The display device 200 includes a display controller 210, a display module 220, a memory unit 230, an image buffer 240, transmission interfaces 251 to 255, an input interface 260, and a USB hub 270.
The display controller 210 may be, for example, an application-specific integrated circuit (application-specific integrated circuit), a System-on-chip (System-on-chip), a processor, or a microcontroller (microcontroller), but the invention is not limited thereto.
The display module 220 may be, for example, a liquid crystal (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), an electronic Ink (E-Ink) display module, an electroluminescent (electroluminescent) display module, a Plasma (Plasma) display module, a projection (projection) display module, or a Quantum Dot (Quantum Dot) display module, but the invention is not limited thereto.
The storage unit 230 can be, for example, a nonvolatile memory, such as a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM), and an Electrically Erasable Programmable Read Only Memory (EEPROM). The storage unit 230 is used for storing the firmware 231 related to the display device 200. 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 setting and Extended Display Identification Data (EDID) of an on-screen Display interface of the Display device 200, Display setting, and one or more on-screen-Display (osd) interfaces 233. The extended display capability identification data includes, for example, a manufacturer of the display apparatus 200, a product name, a resolution, a number of display frames per second, and the like. The display settings include, for example, settings of brightness, contrast, sharpness, color temperature, and the like of the display device 200. The firmware 232 controls the on-screen display interface 233 of the display device 200.
In one embodiment, the display controller 210 may read the program codes of the firmware 231 and 232 and the OSD interface 233 stored in the storage unit 230 through a bus (e.g., I2C bus) and set the related 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 100 through the transmission interface 252 or 253 (e.g., an image transmission channel or a data transmission channel, respectively) for the processing unit 110 and the graphics processing unit 120 in the host 100 to set the resolution and the related synchronization signal of the image signal to be output. The on-screen display interface 233 includes, for example, an on-screen display Menu (OSD Menu) and options, an information display interface (information dashboard), a timer, a counter, a sight (crosshair), a specific symbol, a specific color, a specific text, or a combination thereof, but the invention is not limited thereto.
The image buffer 240 may be, for example, a volatile memory (e.g., a dynamic random access memory) or a non-volatile memory (e.g., a flash memory) for storing an output image to be played on the display module 220, wherein the host 100 or the display controller 210 may cover one or more on-screen display interfaces 233 over a specific area of the image signal stored in the image buffer 240 according to an on-screen display enable signal generated by the host 100 to generate the output image.
The input interface 260 is used to control the on-screen display menu of the display device 200. The input interface 260 may be implemented, for example, by a five-way joystick 262 or by five physical buttons 261, whereby up, down, left, right, and confirmation commands are implemented. The hub 270 may be, for example, a USB hub, and the host 100 may transmit data to the display controller 210 through the hub 270 via the transmission interfaces 153 and 253 (e.g., USB interfaces), and the display controller 210 may also transmit data to the host 100 through the hub 270 via the transmission interfaces 153 and 253.
The USB hub 270 may receive USB Data signals from the host 100 via the transmission interface 253 (e.g., USB Type-C interface), or the display controller 210 may transmit USB Data signals to the host 100 via the transmission interface 253, wherein the USB Data signals include USB super Data Signal (USB super Data Signal) and USB high speed Data Signal (USB high speed Data Signal), wherein the USB super Data signals are Data signals supporting a rate of USB3.1gen1 or more, and Data transmission may be performed through two USB super transmission channels of the USB Type-C interface. The USB turbo transmission channels 1 and 2(Lane0) are, for example, the pins A2-A3(TX1+ and TX1-), B10-B11(RX 1-and RX1+) of the transmission interface 253 (e.g., USB Type-C interface), and the USB turbo transmission channels 3 and 4(Lane1) are, for example, the pins A10-A11(RX 2-and RX2+), B2-B3(TX2+ and TX2-) of the transmission interface 253 (e.g., USB Type-C interface). The USB high speed data signal is a data signal supporting USB2.0 speed, and can be transmitted through a differential signal pair (D + and D-pins) compatible with the pins A6-A7 or B6-B7 of USB2.0 in the USB Type-C interface. In addition, the display device 200 further includes transmission interfaces 254 and 255 (e.g., USB Type-a interfaces) that can be connected to peripheral devices 291 and 292, such as a keyboard, a mouse, or other external USB storage devices, respectively.
The multiplexing circuit 281 separates the video signal and the data signal from the USB signal received by the portable device 20 from the transmission interface 251, and transmits the video signal to the display controller 210 and the data signal to the switching circuit 282. Depending on the transmission mode of the transmission interface 251, the video signal may use 4 or 2 extreme speed channels in the USB Type-C interface, and the data signal may use 2 or 2 plus 2 high speed channels in the USB Type-C interface.
The switch circuit 282 controls the operation modes of the multiplexing circuit 281, such as a first operation mode and a second operation mode, according to the control signal from the display controller 210, which will be described in detail later.
Fig. 2A to 2C are schematic diagrams illustrating paths of image signals and data signals of a display system in different display modes according to an embodiment of the invention.
In the display mode of fig. 2A, the host 100 transmits the video signal to the display controller 210 through the transmission interfaces 152 and 252 (e.g., the video transmission channel 31), and the display controller 210 plays the video signal on the display module 220. It should be noted that at this time, the display controller 210 ignores the image signal from the portable device 20, and the switching circuit 282 disconnects the data transmission between the multiplexing circuit 281 and the switching circuit 282. In addition, the host 100 further performs data transmission with the USB hub 270 through the transmission interfaces 153 and 253 (e.g., the data transmission channel 32), so that the peripheral devices 291 and 292 can communicate with the host 100 through the data transmission channel 32 (as shown by the dashed line path 50). In this display mode, the host 100 can identify the peripheral devices 291 and 292 through the data transmission channel 32, so that a user can operate the display screen of the host 100 through the peripheral devices 291 and 292, such as inputting a keyboard signal, controlling a screen cursor or pressing a mouse button.
In the display mode of fig. 2B, the portable device 20 transmits the image signal and the data signal to the multiplexing circuit 281 through the transmission interfaces 22 and 251 (e.g., the transmission channel 33), and the multiplexing circuit 281 transmits the image signal to the display controller 210, and the display controller plays the image signal on the display module 220. It should be noted that the display controller 210 ignores the video signal from the host 100 at this time. In this display mode, the display controller 210 transmits a control signal 283 (e.g., a GPIO signal in a high logic state) to the switch circuit 282, and the multiplexer circuit 281 transmits a data signal to the USB hub 270 via the channel 284 (e.g., UFP _0a channel) of the switch circuit 282 (as shown by the dashed line path 51). Thus, for data signals, the portable device 20 acts as a host (host) (i.e., the transmission interface 22 is the downstream port DFP), and the peripheral devices 291 and 292, to which the USB hub 270 is extended, act as device (device) (i.e., the transmission interface 251 is the upstream port UFP). In addition, for the video signal, the portable device 20 acts as a host or source, and the display controller 210 acts as a client or device.
Therefore, in the display mode of fig. 2B, the multiplexing circuit 281 is switched to the second operation mode in which the portable device is controlled by both the data transmission channel and the image transmission channel. In addition, through the above connection of the image transmission channel and the data transmission channel in fig. 2B, the portable device 20 can project the screen to the display device 200, and the user can also use the peripheral devices 291 and 292 to control the display of the portable device 20.
In the display mode of fig. 2C, the display mode of the display device 200 is set to a picture-in-picture (PIP) mode or a picture-by-picture (PBPS) mode, which is referred to as a first display mode, that is, the display controller 210 receives the first image signal from the host 100 and the second image signal from the portable device 20 simultaneously, and performs scaling and overlapping processes on the first image signal and the second image signal according to the set display mode, which is common knowledge in the art of the present invention and thus details thereof are not repeated.
If the display mode shown in fig. 2A and 2B is adopted, the host 100 and the portable device 20 are both the master for the display device 200, whether they are in the video transmission channel or the data transmission channel. In other words, for two USB Type-C interfaces in the display apparatus 200: for the transmission interfaces 251 and 253, both uplink ports (UFPs) are used. However, in the PIP mode or the parallel-frame mode of FIG. 2C, since the host 100 and the portable device 20 output the first video signal and the second video signal to the display device 200 respectively, and the video signal and the data signal in the conventional USB Type-C interface have the same role (e.g. both the uplink port and the downlink port), it means that the USB Type-C interface connected to the host 100 and the portable device 20 is also the uplink port. Therefore, for the video signal and the data signal, the host 100 and the portable device 20 are still the main control terminals for the conventional display device. In this case, although both the host 100 and the portable device 20 are connected to the same conventional display device, the host 100 cannot recognize the storage medium 23 in the portable device 20, i.e., the host 100 cannot access the data of the storage medium 23 in the portable device 20 at this time. However, the display device 200 of the present invention can solve the above technical problems.
In detail, in the PIP mode or the PIP mode of FIG. 2C, the host 100 is still the source or the master of the video signal and the data signal, the USB data signal of the transmission interface 253 of the display device 200 is connected to the USB hub 270, and the USB hub 270 extends to two USB Type A ports (i.e. the transmission interfaces 254 and 255). At this time, the display controller 210 transmits a control signal (e.g., a low logic state) to the switch circuit 282, and the output signal of the USB hub 270 is connected to the transmission interface 251 through the channel 285 (e.g., DFP _0b channel) and the multiplexing circuit 281. Therefore, for data signals, the transmission interface 251 will be changed from the original USB Type-C uplink port UFP to the USB Type-C downlink port DFP with the USB hub expansion function. Accordingly, in the PIP/PBP display mode of fig. 2C, the multiplexing circuit 281 is switched to the first operation mode. In the first operation mode, the peripheral devices 291 and 292 are connected to the host 100, and data signals of the host 100 can communicate with the portable device 20 through the USB hub 270, the switching circuit 282 and the multiplexing circuit 281 (as shown by the dashed line path 52), and the portable device 20 is at the host side in the video transmission channel, but at the device side in the data transmission channel. Therefore, in the case where the display device 200 is set to the picture-in-picture mode or the picture-in-picture mode, the host 100 can recognize the storage medium 23 in the portable device 20 through the data path and access data in the storage medium 23.
In another embodiment, although the display device 200 can be set to the PIP mode or the parallel mode, the peripheral devices 291 and 292 are connected to the USB hub 270 of the display device 200, so that the peripheral devices 291 and 292 can only control the display of one of the host 100 and the portable device 20. In this case, the user can call the OSD interface 233 through the input interface 262 of the display device 200, and select the transmission interface of the main control end corresponding to the data signals of the peripheral devices 291 and 292 from the OSD interface 233, such as the selectable transmission interface 251 or 253.
In yet another embodiment, when the display apparatus 200 is set to the PIP mode, the display controller 210 sends corresponding control signals to the switch circuit 282 to connect the data signals of the peripheral devices 291 and 292 connected to the USB hub 270 to the corresponding devices of the PIP. If the display screen of the host 100 is the home screen, the USB hub 270 switches the data signals of the peripheral devices 291 and 292 to the transmission interface 253. If the display screen of the portable device 20 is the home screen, the USB hub 270 switches the data signals of the peripheral devices 291 and 292 to the transmission interface 251 (via the switching circuit 282 and the multiplexing circuit 281).
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (14)
1. A display device, comprising:
a USB Type-C connector for connecting to a portable device, wherein the USB signal between the display device and the portable device comprises an image transmission channel and a data transmission channel;
a display panel;
a multiplexing circuit for separating the image transmission channel and the data transmission channel of the USB signal;
a switching circuit for controlling the operation mode of the multiplexing circuit; and
a display controller for controlling the display mode of the display panel;
wherein, in response to the display panel being in a first display mode, the display controller transmits a control signal to the switching circuit to control the multiplexing circuit to switch to the first operation mode,
the portable device is a main control end in the image transmission channel and a device end in the data transmission channel corresponding to the multiplexing circuit in the first operation mode.
2. The display device of claim 1, wherein the display controller receives the first video signal from a host through a first transmission interface of the display device and receives the second video signal from the portable device through the video transmission channel.
3. The display apparatus according to claim 2, wherein the first display mode is a PIP mode or a side-by-side mode.
4. The display device of claim 3, further comprising: a USB hub for connecting at least one peripheral device and receiving a first data signal from the host through a second transmission interface of the display device,
in response to the multiplexing circuit being in the first operation mode, the first data signal is transmitted to the portable device through the USB hub, the switching circuit and the multiplexing circuit in sequence, so that the host recognizes the storage medium in the portable device and accesses the data in the storage medium.
5. The display apparatus according to claim 4, wherein for the data transmission channel, the USB Type-C connector is a USB Type-C downstream port extended by the USB hub.
6. The display device as claimed in claim 4, further comprising an input interface for calling an on-screen display interface for selecting the at least one peripheral device to control a display of the first image signal or the second image signal in the first display mode.
7. The display apparatus according to claim 4, wherein when the first display mode is the PIP mode, the display controller sends a control signal to the switch circuit to connect the data signal of the at least one peripheral device connected to the USB hub to the host or the portable device corresponding to the PIP.
8. A display system, comprising:
a portable device;
a host computer; and
a display device, comprising:
a USB Type-C connector for connecting to the portable device, wherein the USB signal between the display device and the portable device comprises an image transmission channel and a data transmission channel;
a display panel;
a multiplexing circuit for separating the image transmission channel and the data transmission channel of the USB signal;
a switching circuit for controlling the operation mode of the multiplexing circuit; and
a display controller for controlling the display mode of the display panel;
wherein, in response to the display panel being in a first display mode, the display controller transmits a control signal to the switching circuit to control the multiplexing circuit to switch to the first operation mode,
the portable device is a main control end in the image transmission channel and a device end in the data transmission channel corresponding to the multiplexing circuit in the first operation mode.
9. The display system of claim 8, wherein the display controller receives the first image signal from the host through a first transmission interface of the display device and receives the second image signal from the portable device through the image transmission channel.
10. The display system of claim 9, wherein the first display mode is a PIP mode or a side-by-side mode.
11. The display system of claim 10, wherein the display device further comprises a USB hub for connecting to at least one peripheral device and receiving a first data signal from the host through a second transmission interface of the display device,
in response to the multiplexing circuit being in the first operation mode, the first data signal is transmitted to the portable device through the USB hub, the switching circuit and the multiplexing circuit in sequence, so that the host recognizes the storage medium in the portable device and accesses the data in the storage medium.
12. The display system of claim 11, wherein for the data transmission channel, the USB Type-C connector is a USB Type-C downstream port extended by the USB hub.
13. The display system of claim 11, wherein the display device further comprises an input interface for calling an on-screen display interface for selecting the at least one peripheral device to control a display of the first image signal or the second image signal in the first display mode.
14. The display system of claim 11, wherein when the first display mode is the PIP mode, the display controller sends a control signal to the switch circuit to connect the data signal of the at least one peripheral device connected to the USB hub to the host or the portable device corresponding to the PIP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010722498.8A CN113971939A (en) | 2020-07-24 | 2020-07-24 | Display system and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010722498.8A CN113971939A (en) | 2020-07-24 | 2020-07-24 | Display system and display device |
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| CN113971939A true CN113971939A (en) | 2022-01-25 |
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| CN202010722498.8A Pending CN113971939A (en) | 2020-07-24 | 2020-07-24 | Display system and display device |
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| CN (1) | CN113971939A (en) |
Citations (10)
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