TWI731295B - Display apparatus and method for controlling display apparatus - Google Patents

Abstract

The present invention provides a display apparatus, wherein the display apparatus includes a hub, a connector, a multiplexer and a control circuit. In the operations of the display apparatus, the hub is configured to receive data provided by a plurality of elements to generate a first signal complied with USB 2.0 or a second signal complied with USB 3.0. The connector complies with USB Type-C, and the connector is coupled to an electronic device via a cable. The multiplexer refers to a control signal to make a plurality of specific pins of the connector to receive the first signal or the second signal. The control circuit is configured to generate the control signal by determining if the electronic device supports a specific technique.

Description

Display device and method for controlling display device

The present invention relates to a display device, especially a virtual reality head-mounted display device.

For the current virtual reality display device using Universal Serial Bus (USB) type C (Type-C) connector, it can only transmit display data and USB 2.0 data at the same time. However, due to the limited bandwidth of USB 2.0, a virtual link technology (Virtual Link) applied to the display chip of the computer is currently proposed, which can set the USB type C connector to simultaneously transmit display data and USB 3.0 data to improve the data transmission speed of the virtual reality display device.

However, this technology can only be implemented on a computer that supports virtual connection technology. In case the virtual reality display device is connected to a normal computer through a USB type C connector, it cannot be used, because the normal computer The USB type C connector can only provide display data and USB 2.0 data transmission. As a result, it causes problems in the use of the virtual reality display device.

Therefore, one of the objectives of the present invention is to provide a display device which can automatically detect Test whether the currently connected computer supports virtual link technology and switch internal signals accordingly, so that the display device can be applied to any computer that supports or does not support virtual link technology to solve the problems described in the previous technology.

In an embodiment of the present invention, a display device is disclosed, which includes a hub circuit, a connector, a multiplexer, and a control circuit. During the operation of the display device, the hub circuit receives data provided by multiple components to generate a first signal conforming to the USB 2.0 specification or a second signal conforming to the USB 3.0 specification; the connector supports USB type C Interface, and the connector is used to connect with an electronic device through a connection line; the multiplexer selectively causes a plurality of specific pins of the connector to receive the first signal or the first signal according to a control signal Two signals; and the control circuit generates the control signal according to whether the electronic device supports a specific technology.

In another embodiment of the present invention, a method of controlling a display device is disclosed, wherein the display device includes a connector for connecting with an electronic device through a cable, and the connector supports a USB type The C interface and the method include the following steps: detecting whether the electronic device supports a specific technology to generate a control signal; controlling a plurality of specific pins of the connector according to the control signal, so that the plurality of specific connections The pin is used to receive a first signal conforming to the USB 2.0 specification or a second signal conforming to the USB 3.0 specification.

102: connection line

110: Virtual reality head-mounted display device

111: connector

112: Multiplexer

113: hub circuit

114: control circuit

115: camera components

116: display components

120: electronic device

A1~A12, B1~B12: pins

S300~S310: steps

U2: USB 2.0 signal

U3: USB 3.0 signal

Vc1, Vc2: control signal

FIG. 1 is a schematic diagram of a virtual reality head-mounted display device 110 according to an embodiment of the invention.

Figure 2 is a schematic diagram of the connector.

FIG. 3 is a flowchart of controlling a virtual reality head-mounted display device according to an embodiment of the present invention.

FIG. 1 is a schematic diagram of a virtual reality head-mounted display device 110 according to an embodiment of the invention. As shown in FIG. 1, the virtual reality head-mounted display device 110 includes a connector 111, a multiplexer 112, a hub circuit 113, a control circuit 114, a camera element 115, and a display element 116. In this embodiment, the connector 111 of the virtual reality head-mounted display device 110 is connected to an electronic device 120 through a cable 102, where the electronic device 120 can be a desktop computer, a notebook computer, Or any electronic device that can provide image data to the virtual reality head-mounted display device 110.

The connector 111 is a USB type C connector. As shown in Figure 2, the connector 111 contains multiple pins A1~A12 and B1~B12. The names of the pins A1~A12 are GND, TX1+, TX1- , VBUS, CC1, D+, D-, SBU1, VBUS, RX2-, RX2+, GND, and the names of pins B1~B12 are GND, TX2+, TX2-, VBUS, CC2, D+, D-, SBU2, VBUS , RX1-, RX1+, GND. Since those with ordinary knowledge in the art should be able to understand the basic structure of the USB type C connector, the relevant details are not repeated here.

In this embodiment, in order to make the virtual reality head-mounted display device 110 applicable regardless of whether the electronic device 120 supports virtual connection technology, the multiplexer 112 is used when the electronic device 120 supports virtual connection technology. The pins A6, A7, B6, and B7 of the control connector 111 are connected to the USB 3.0 port in the hub circuit 113 to transmit USB 3.0 signals; and the multiplexer 112 in the electronic device 120 does not support virtual connection technology In this case, the pins A6, A7, B6, and B7 of the control connector 111 are connected to the USB 2.0 ports in the hub circuit 113 to transmit USB 2.0 signals.

In detail, when the virtual reality head-mounted display device 110 is connected to the In the case of the sub-device 120, the control circuit 114 will contact the electronic device 120 through the pin CC1 or the pin CC2 of the connector 111 to learn whether the electronic device 120 supports the virtual connection technology. If the electronic device 120 supports virtual connection technology, the control circuit 114 generates a control signal Vc1 to the multiplexer 112 to control the multiplexer 112 to connect the pins A6, A7, B6, and B7 of the connector 111 to the hub circuit 113 The USB 3.0 port, that is, when the cable 102 and the connector 111 are plugged in, the pins A6, A7, B6, and B7 can be regarded as the TX+, TX-, RX+, RX- in USB 3.0; and when the cable is connected When 102 and connector 111 are reversely inserted, pins A6, A7, B6, and B7 can be regarded as RX+, RX-, TX+, TX- in USB 3.0. At this time, the hub circuit 113 can convert the data generated by the control circuit 114 and the image data generated by the camera component 115 into a signal U3 conforming to the USB 3.0 specification through the hub circuit, and then through the multiplexer 112 and the connector 111 The pins A6, A7, B6, and B7 are transmitted to the electronic device 120. In addition, since the electronic device 120 supports the virtual connection technology and the virtual reality head-mounted display device 110 and the electronic device 120 adopt a signal conforming to the USB 3.0 specification for transmission, the control circuit 114 will generate a control signal Vc2 at this time. This allows the image data captured by the camera component 115 to be transmitted to the electronic device 120 in a higher resolution manner (for example, the highest resolution of the camera component 115), and the electronic device 120 receives the image from the camera component 115 After the data is collected, some additional image processing will be performed, and the processed image data will be connected to at least a part of the pins A2, A3, A10, A11, B2, B3, B10, and B11 of the connection line 102 and the connector 111. The feet are sent to the display element 116 for the user to watch.

On the other hand, if the electronic device 120 does not support the virtual connection technology, the control circuit 114 generates the control signal Vc1 to the multiplexer 112 to control the multiplexer 112 to connect the pins A6, A7, B6, and B7 of the connector 111 to the hub The USB 2.0 port in the circuit 113, that is, when the connecting line 102 and the connector 111 are plugged in, the pins A6, A7, B6, and B7 can be regarded as D1+, D1-, D2+, D2- in USB 2.0; When the connecting line 102 and the connector 111 are inserted reversely, the pins A6, A7, B6, and B7 can be regarded as D2+, D2-, D1+, and D1- in USB 3.0. At this time, the hub circuit 113 can transfer the data generated from the control circuit 114 The image data generated by the material and the camera component 115 is converted into a signal U2 conforming to the USB 2.0 specification through the hub circuit, and then transmitted to the electronic device 120 through the multiplexer 112 and the pins A6, A7, B6, and B7 of the connector 111. In addition, since the virtual reality head-mounted display device 110 and the electronic device 120 use signals that comply with the USB 2.0 specification for transmission, the control circuit 114 will generate the control signal Vc2 at this time to make the image captured by the camera component 115 The data will be sent to the electronic device 120 in a lower resolution (for example, a resolution lower than the USB 2.0 bandwidth), and the electronic device 120 will do some additional processing after receiving the image data from the camera component 115 After the image processing, the processed image data is sent to the display element 116 through at least a part of the pins A2, A3, A10, A11, B2, B3, B10, and B11 of the connecting line 102 and the connector 111 for Users watch.

It should be noted that although the virtual reality head-mounted display device 110 is used as an illustration in the embodiment of FIG. 1, the present invention is not limited thereto. In other embodiments, as long as the specific pins of the USB type C connector 111 can be switched according to whether the electronic device 120 supports a specific technology to receive USB 2.0 or USB 3.0 signals, the virtual reality headset The display device 110 may also be other types of display devices, and the related design changes should belong to the scope of the present invention.

FIG. 3 is a flowchart of controlling a virtual reality head-mounted display device 110 according to an embodiment of the present invention. Referring to Figures 1 to 3 and the content described in the above embodiments, the flow of Figure 3 is as follows.

Step 300: the process starts, and the virtual reality head-mounted display device 110 is connected to the electronic device 120.

Step 302: Determine whether the electronic device 120 supports the virtual connection technology, if so, the process proceeds to step 304; if not, the process proceeds to step 308.

Step 304: Connect the pins A6, A7, B6, and B7 of the connector 111 to the USB 3.0 port of the hub circuit 113.

Step 306: Control the camera component 115 to transmit data with higher resolution to the electronic device.

Step 308: Connect the pins A6, A7, B6, and B7 of the connector 111 to the USB 2.0 port of the hub circuit 113.

Step 310: Control the camera component 115 to transmit data with a lower resolution to the electronic device.

Summarizing the present invention briefly, the virtual reality head-mounted display device of the present invention can automatically detect whether the computer currently connected to supports virtual connection technology and switch the internal signals accordingly, so that the display device can be used It can be used on any computer that supports or does not support virtual link technology for ease of use.

The foregoing descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

102: connection line

110: Virtual reality head-mounted display device

111: connector

112: Multiplexer

113: hub circuit

114: control circuit

115: camera components

116: display components

120: electronic device

U2: USB 2.0 signal

U3: USB 3.0 signal

Vc1, Vc2: control signal

Claims (10)

A display device includes: a hub circuit for receiving data provided by a plurality of components to generate a first signal conforming to a Universal Serial Bus (USB) 2.0 specification or conforming to the USB 3.0 specification A second signal; a connector, where the connector supports a USB Type-C (Type-C) interface, and the connector is used to connect with an electronic device through a cable; a multiplexer is used according to a A control signal is used to selectively enable a plurality of specific pins of the connector to receive the first signal or the second signal; and a control circuit is used to generate the control signal according to whether the electronic device supports a specific technology. The display device described in the first item of the scope of patent application, wherein the display device is a virtual reality head-mounted display device. As for the display device described in claim 1, wherein the specific pins are A6, A7 or B6, B7 pins of the USB type C interface. For example, in the display device described in claim 1, wherein the specific technology is a virtual link technology (Virtual Link), when the control circuit detects that the electronic device supports the virtual link technology, the control circuit generates the control Signal to control the multiplexer so that the specific pins of the connector receive the second signal; and when the control circuit detects that the electronic device does not support the virtual connection technology, the control circuit generates the control The signal is used to control the multiplexer to make the specific pins of the connector receive the first signal. The display device described in item 1 of the scope of patent application further includes: a camera element for providing captured image data to the hub circuit; wherein the control signal is a first control signal, and the control circuit According to whether the electronic device supports the specific technology, a second control signal is generated to control the resolution of the image data generated by the camera component. For the display device described in item 5 of the scope of patent application, when the control circuit detects that the electronic device supports the specific technology, the control circuit generates the second control signal to make the image data have a higher resolution And when the control circuit detects that the electronic device does not support the specific technology, the control circuit generates the second control signal so that the image data has a lower resolution. A method for controlling a display device, wherein the display device includes a connector for connecting with an electronic device through a cable, and the connector supports a Universal Serial Bus (USB) type C ( Type-C) interface, and the method includes: detecting whether the electronic device supports a specific technology to generate a control signal; and controlling a plurality of specific pins of the connector according to the control signal, so that the plurality of The specific pin is used to receive a first signal conforming to the USB 2.0 specification or a second signal conforming to the USB 3.0 specification. According to the method described in item 7 of the scope of patent application, the specific pins are A6, A7 or B6, B7 pins of the USB type C interface. Such as the method described in item 7 of the scope of patent application, the specific technology is a virtual connection technology (Virtual Link), and control multiple specific pins of the connector according to the control signal, so that the multiple specific pins are used to receive a first signal that conforms to the USB 2.0 specification or that conforms to the USB 3.0 specification The step of a second signal includes: when it is detected that the electronic device supports the virtual connection technology, generating the control signal so that the specific pins of the connector receive the second signal; and when the detection is When the electronic device does not support the virtual connection technology, the control signal is generated so that the specific pins of the connector receive the first signal. For the method described in claim 7, wherein the control signal is a first control signal, and the display device further includes a camera element, and the method further includes: generating according to whether the electronic device supports the specific technology A second control signal is used to control the resolution of the image data generated by the camera element.

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