TWM536446U - System for wireless AV transmission having feedback control - Google Patents

Abstract

According to one embodiment of a system for wireless AV transmission, the system comprising: at least one transmission device, each of the transmission device receives a AV signal, and outputs the AV signal comply with IEEE 802.11ac protocol; and a receiving device comply with IEEE 802.11ac protocol for receiving outputs of each transmission device, and selectively transmits the AV signal of one of the transmission devices to a display device; wherein the receiving device sends a feedback control signal to control actions of the transmission device.

Description

Wireless video transmission system with feedback control

The disclosure relates to a wireless video transmission system with feedback control.

The popularity of wireless transmission, wireless video transmission to improve the convenience of people using audio and video transmission. However, since wireless video transmission has a delay time requirement in application, the current technology cannot adjust the Wi-Fi performance to the best, so the compression of the higher H.264 technology can be selected to reduce the bandwidth requirement, but This will cause the latency to be too high.

The disclosed embodiment relates to a wireless video transmission system with feedback control, the system includes: at least one transmitting device, each transmitting device of at least one transmitting device receives an audio and video signal, and outputs audio and video in accordance with the IEEE 802.11ac protocol. And a receiving device for receiving the video signal output by each of the at least one transmitting device in accordance with the IEEE 802.11ac protocol, and selectively outputting the video signal of the transmitting device of the at least one transmitting device to the video signal Display device; The receiving device transmits a feedback control signal to the transmitting device to control the action of the transmitting device.

The video signal is a signal such as an audio, a picture, or a video program; wherein the receiving device outputs the video signal of the specific transmitting device to the display device according to a button operation on a specific transmitting device; wherein the feedback control signal is met A universal serial bus (USB) protocol signal; wherein the action includes at least one of an operation of a device such as a keyboard, a mouse, a screen touch, an electronic whiteboard pen, or a hand rocker.

The above and other advantages of the present disclosure will be described in detail below with reference to the following drawings, detailed description of the embodiments, and claims.

110‧‧‧Transfer device

120‧‧‧ receiving device

130‧‧‧Display device

150‧‧‧Feedback control signal

210‧‧‧Video Receiver Module

220‧‧‧Image compression/packaging module

230‧‧‧Wireless Transmission Module

250‧‧‧Wireless receiving module

260‧‧‧Packet Processing/Image Decompression Module

270‧‧‧Video Output Module

410‧‧‧ touch screen

1 is a schematic diagram consistent with an embodiment of the disclosure, illustrating a wireless video transmission system with feedback control.

2 is a schematic diagram consistent with an embodiment of the disclosure, illustrating a transmitting device and receiving device of a wireless video transmission system with feedback control.

3A-3C are schematic views consistent with an embodiment of the disclosure, illustrating that a receiving device of a wireless video transmission system with feedback control selectively outputs video signals of one of three transmitting devices to a display device .

4A-4B are schematic diagrams consistent with an embodiment of the disclosure, illustrating a receiving device of a wireless video transmission system with feedback control transmitting a feedback control signal to a transmitting device.

Hereinafter, the embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings, which will be readily understood by those skilled in the art. The inventive concept can be implemented in a variety of variations, and is not limited to these embodiments. The disclosure omits the description of well-known parts, and the same reference numerals represent the same elements in the present disclosure.

This new patent is deeply optimized for wireless transmission technology and can transmit a large amount of data generated by MJPEG (Motion JPEG) compression, which is sufficient for stable transmission with low delay. Therefore, many instant applications can be implemented by this technology: such as briefing interaction , instant games, and more.

The embodiment of the present disclosure provides a technology. The present technology is a wireless video transmission system with feedback control for simultaneously providing instantaneous transmission of multiple video information numbers to one device. The technology application field of the technology is a place for video and audio transmission needs, for example, an office multi-person participates in a briefing but only one person's video signal can be displayed at the same time, or multiple devices in the home have audio and video output, but only one device can display at the same time. Go to the TV and other displays.

An embodiment of the present disclosure provides a wireless video transmission system with feedback control, as shown in FIG. Referring to FIG. 1, the system includes at least one transmitting device 110. Each transmitting device of the at least one transmitting device receives an audio and video signal and outputs an audio and video signal in accordance with the IEEE 802.11ac protocol; and a receiving device 120 to comply with the IEEE 802.11ac. The protocol receives the video signal output by each of the at least one transmitting device, and selectively outputs the video signal of one of the at least one transmitting device to a display device 130; wherein the receiving device 120 transmits a feedback control signal No. 150 to the transfer device 110 to control the operation of the transfer device 110.

In FIG. 1, the video signal received by each transmitting device 110 may be a signal such as an audio, a picture, or a video program, and may be provided via a video source device such as a DVD player, a notebook computer, or a handheld device. The receiving device 120 may provide the video signal to the display device 130 via receiving. The display device 130 can be a display such as a television or a projector.

Each of the transmission devices 110 of the multi-pair wireless video transmission system in FIG. 1 may further include an audio/video receiving module 210, an image compression/packaging module 220, and a wireless transmission module 230, as shown in FIG. Referring to FIG. 2, the video receiving module 210 of the transmitting device 110 receives the video signal; the image compression/encapsulation module 220 performs compression encoding of the video signal, for example, MJPEG encoding and packetization to cooperate with the subsequent IEEE 802.11ac protocol. The packet transmission is performed; and the wireless transmission module 230 compresses and encodes the packetized video signal to conform to the IEEE 802.11ac protocol for transmission.

The receiving device 120 of the multi-pair wireless video transmission system in FIG. 1 may further include a wireless receiving module 250, a packet processing/image decompression module 260, and a video output module 270, as shown in FIG. 2. Referring to FIG. 2, the wireless receiving module 250 of the receiving device 120 receives the video and audio signals in accordance with the IEEE 802.11ac protocol; the processing of the received packets by the packet processing/image decompression module 260 and the processing of decompressing the video and audio signals; The video output module 270 outputs the decompressed video signal to the display device 130.

In the multi-to-one wireless video transmission system of FIG. 1, each transmitting device 110 is paired with the receiving device 120 in accordance with the IEEE 802.11ac protocol, wherein the pairing process is as follows: First, the transmitting device and the receiving device first use the preset SSID link. The transmission device transmits its own wireless MAC, serial number, and Wi-Fi country code information to the receiving device. When the receiving device receives the information of the transmitting device, it first checks whether the upper limit of the number of pairs is reached, and whether the country code is correct. When it is correct, it will inform the transmitting device of the SSID of the subsequent AV signal transmission and record the information of the transmitting device. If it is not allowed, the response will be rejected to the transmitting device. When the transmitting device receives the allowed pairing, it will change the SSID of the video transmission and record it. After the connection is completed, the normal transmission process of the video signal will be started. When you are on the line, you will reply to the pre-pairing information and try to connect to the original settings. After the pairing is successful, the receiving device adds the transmission device to the list of paired devices. The list of paired devices includes the MAC address, serial number, and Wi-Fi country code of the transmitting device. If the transmission device does not receive any pairing from the transmitting device. When the signal is received, the receiving device will return to its previous state by itself. During the pairing process, the receiving device still accepts the audio and video signals of other transmitting devices. The pairing behavior of the receiving device and the transmitting device only needs to be performed once, and the pairing record of the receiving device is continuously retained until a user enters the management page of the receiving device to manually reject it. If the pairing record exceeds an upper limit, it will no longer be allowed. Add any pairing records.

3A-3C are schematic diagrams consistent with an embodiment of the disclosure, illustrating that the receiving device of the plurality of wireless video transmission systems of FIG. 1 selectively outputs the audio and video signals of one of the three transmitting devices to Display device. FIG. 3A illustrates the pairing of the three transmitting devices of the many pairs of wireless video transmission systems of FIG. 1 with the receiving device. The three transmission devices 110 are respectively a DVD player, a notebook computer and another notebook computer, and the display device 130 is a flat display for displaying the receiving device. 120 receives the video signal to the transmitting device 110. FIG. 3B illustrates that a transmitting device 110 of FIG. 3A uses a control method for the notebook computer to display the screen of the notebook computer on the display device 130 that is a flat display. The control method may be performed, for example, on the transmitting device 110 in a button manner. FIG. 3C illustrates that another transfer device 110 in FIG. 3A is a notebook computer that presses a screen of the notebook computer on the display device 130 that is a flat display.

As previously mentioned, in FIG. 1, receiving device 120 transmits a feedback control signal 150 to transmitting device 110 to control the operation of transmitting device 110. The feedback control signal 150 may include, for example, data conforming to the Universal Serial Bus (USB) protocol, and the action may be, for example, a mouse action or a screen touch action. 4A-4B are schematic diagrams consistent with an embodiment of the disclosure, illustrating that the receiving device 120 of the wireless video transmission system with feedback control transmits a feedback control signal 150 to the transmitting device 110. In FIG. 4A, the receiving device has a universal serial bus host (USB Host) to connect to the universal serial bus device (USB Device) touch screen 410. The connected universal serial bus device can also be, for example, a universal serial bus keyboard, a mouse, a touch screen, an electronic whiteboard pen or a hand rocker. The receiving device 120 converts the action of the universal sequence bus device into a feedback control signal 150 for transmission to the transmitting device 110. The transmitting device 110 then controls the action of the transmitting device 110 according to the feedback control signal 150. The feedback control signal 150 conforming to the Universal Serial Bus (USB) protocol can control the operation of the device such as the keyboard, mouse, screen touch, electronic whiteboard pen, or hand-held rocker of the transmitting device 110. In FIG. 4A, the feedback control signal 150 can control the operation functions of the keyboard, the mouse, the screen touch, and the like of the notebook connected to the transmitting device 110.

4B illustrates the receiving device 120 transmitting the feedback control signal in FIG. 4A. The operation of the number 150 to the transmitting device 110. Referring to FIG. 4B, the receiving device 120 first performs device announcement on the touch screen 410 and establishes a connection with the transmitting device 110, that is, pairing. The receiving device 120 performs device identification and installation driving on the touch screen 410. After receiving the control data of the touch screen 410, the receiving device 120 performs control data conversion, and then transmits the feedback control signal 150 to the transmitting device 110 in a wireless manner (in accordance with the IEEE 802.11ac protocol). The transmitting device 110 further converts the feedback control signal 150 to control data, and transmits the converted control data to control the action of the notebook connected to the transmitting device 110.

The above disclosed technology provides a technique for wireless video transmission with feedback control. Paired with the receiving device via the transmitting device, the receiving device selectively outputs the video signal of the transmitting device to a display device; wherein the receiving device transmits a feedback control signal to the transmitting device, which can be used to control the action of the transmitting device.

The illustrations and descriptions disclosed above are only examples of the present disclosure, and are not intended to limit the scope of the disclosure, and the changes made by those skilled in the art may be changed or Modifications should be covered in the scope of the patent application in this case below.

110‧‧‧Transfer device

120‧‧‧ receiving device

130‧‧‧Display device

150‧‧‧Feedback control signal

Claims (5)

A wireless video transmission system with feedback control, the system comprising: at least one transmitting device, each transmitting device of the at least one transmitting device receiving an audio and video signal, and outputting the video and audio signal according to the IEEE 802.11ac protocol; and receiving The device receives the video signal output by each of the at least one transmitting device in accordance with the IEEE 802.11ac protocol, and selectively outputs the video signal of one of the at least one transmitting device to a display device; The receiving device transmits a feedback control signal to the transmitting device in accordance with the IEEE 802.11ac protocol to control the action of the transmitting device. The system of claim 1, wherein the video signal is an audio, picture, or video program signal. The system of claim 1, wherein the receiving device outputs the video signal of the specific transmitting device to the display device according to a button operation on a specific transmitting device. The system of claim 1, wherein the feedback control signal comprises data conforming to a universal sequence bus protocol. The system of claim 1, wherein the action comprises at least one of an operation action of a keyboard, a mouse, a screen touch, an electronic whiteboard pen, and a handheld rocker device.