TWM536380U - System for hdmi intelligent play - Google Patents

Abstract

According to one embodiment of a system for HDMI intelligent play, the system comprising: at least one transmission device, each of the transmission device receives a AV signal comply with HDMI, and outputs the AV signal with wireless transmission; and a receiving device for receiving outputs of transmission devices, and selectively transmits the AV signals of one or many transmission devices to a display device comply with HDMI.

Description

HDMI smart playback system

The disclosure relates to an HDMI smart playback system.

Due to the popularity of wireless transmission, wireless video transmission has improved 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, for example 400ms or more. 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 within 100 Mbps, and the latency can be reduced to less than 100 ms, so many technologies can be used for this instant. Sexual applications: such as newsletter interactions, instant games, and more.

The present disclosure provides a high-definition multimedia interface (HDMI) intelligent playback technology for simultaneously providing instantaneous transmission of multiple audio and video materials and playing to a display device in compliance with an HDMI interface.

The disclosed embodiments can provide a high-definition multimedia interface (HDMI) intelligent playback system.

The disclosed embodiment relates to an HDMI intelligent playing system, the system includes: at least one transmitting device, each transmitting device of the at least one transmitting device receives an audio and video signal conforming to the HDMI interface, and outputs the video and audio signal by wireless transmission; And a receiving device for wirelessly transmitting the video signal output by each of the at least one transmitting device, and selectively outputting the audio and video signals of the one or more transmitting devices to a display device in compliance with the HDMI interface. The audio and video signals are signals such as audio, pictures, or audio and video programs. The code of the video signal is a MJPEG code. The transmission mode of the audio and video signal includes at least one of a movie mode, a presentation mode, and a low power mode. The transmitting device further includes an audio and video receiving module for receiving the audio and video signal conforming to the HDMI interface; an image compression/encapsulation module for performing compression encoding and packetization of the video and audio signal to cooperate with the subsequent wireless transmission of the packet; The wireless transmission module compresses and encodes the video signal of the packet for wireless transmission. The receiving device further includes a wireless receiving module for wirelessly transmitting to receive video and audio signals; a packet processing/image decompression module for processing the received packets and performing decompression processing of the audio and video signals; and a video output module Output audio and video signals conforming to the HDMI interface to the display device. The system further includes a transmitting device that outputs the video signal of the transmitting device to the other display device via the HDMI interface. The system further includes the receiving device receiving the video signal transmitted by the at least one mobile device. The system also includes the receiving device receiving audio and video signals via a universal serial bus (USB) or HDMI interface.

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.

The embodiment of the present disclosure provides a technology, and the present technology is an HDMI (High-Definition Multimedia Interface) intelligent playback system for simultaneously providing instantaneous wireless transmission of a plurality of video information numbers to a device. The technical aspects involved in this technology cover image compression, transmission, and HDMI optimal resolution adjustment. The application field is a place where there is a need for a plurality of audio and video transmissions, for example, an office multi-person participates in a briefing but at the same time one or more audio and video signals can be displayed, or multiple devices in the home have HDMI output, but one or more at the same time The device can display to a display such as a TV.

An embodiment of the present disclosure provides an HDMI intelligent playback system, 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 conforming to the HDMI interface, and outputs the video and audio signals by wireless transmission; and a receiving device 120 for wirelessly transmitting and receiving. The video signal output by each of the at least one transmitting device and the audio and video signals of the one or more transmitting devices 110 are selectively output to a display device 130 in compliance with the HDMI interface.

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 connected to an HDMI transmission line via a video source device such as a DVD player, a notebook computer, or a handheld device. provide. The wireless transmission may be a transmission conforming to a wireless communication protocol, such as an IEEE 802.11ac communication protocol. The receiving device 120 may be to provide video and audio signals to the display device, for example, by connecting an HDMI transmission line. The display device 130 may be, for example, a display such as a television or a projector that is connected to an HDMI transmission line.

Referring to FIG. 1, each transmitting device 110 is first paired with the receiving device 120 by wireless transmission to select a transmission channel and adjust WMM (Wi-Fi Multimedia) parameters, MCS (Modulation and Coding Scheme) and packet retransmission mechanism, and the receiving device 120 Detecting the display coefficient of the display device and transmitting the display coefficient to each of the transmitting devices 110 by wireless transmission; and each transmitting device 110 adjusts the compression ratio and the frame rate of the video signal according to the display coefficient and the transmission mode of the video signal (Frame) Rate) to output audio and video signals.

Each of the transmission devices 110 of the HDMI intelligent playback 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 audio and video signals conforming to the HDMI interface; and the image compression/encapsulation module 220 performs compression encoding of the video and audio signals, for example, MJPEG encoding and packetization to cooperate with subsequent packets. Wireless transmission; and the wireless transmission module 230 compresses and encodes the packetized video signal for wireless transmission.

The receiving device 120 of the HDMI intelligent playing 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 by wireless transmission; the processing of the received packet by the packet processing/image decompression module 260 and the processing for decompressing the video and audio signals; and the audio and video output. The module 270 outputs the audio and video signals conforming to the HDMI interface to the first display device 130, and outputs the audio and video signals to the second display device 140 in accordance with an interface protocol.

In the HDMI intelligent playing system of FIG. 1, each transmitting device 110 is paired with the receiving device 120 by wireless transmission, wherein the pairing process is as follows: First, the transmitting device 110 and the receiving device 120 are first connected by using a preset SSID, and the transmitting device sets itself. The wireless MAC, serial number, and Wi-Fi country code information are transmitted 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.

As previously mentioned, each transmitting device 110 is first paired with the receiving device 120 in wireless transmission to select a transmission channel and adjust WMM parameters, MCS and packet retransmission mechanisms. By this adjustment, the packets of the video and audio signals can enjoy higher priority when transmitting, and can also achieve shorter retransmission time and higher retransmission opportunities when facing interference with other devices of the transmission channel.

In the HDMI smart playback system of FIG. 1, the receiving device 120 detects display coefficients of the display device and transmits display coefficients to each of the transmitting devices 110. The display coefficient may be, for example, an EDID (Extended Display Information Data) data, and the receiving device transmits the EDID data of the display device to the transmitting device, so that the EDID data of the transmitting device can be the same as the display device, and the audio and video signals are transmitted to the transmitting device. The source device can also send the best picture resolution based on this EDID value.

In the HDMI smart play system of FIG. 1, the EDID may be synchronized, for example, when the transmitting device 110 and the receiving device 120 are paired. If the EDID status is "not sync" at this time, the receiving device 120 transmits the EDID data of the current display device to the transmitting device. If the EDID data received by the transmitting device 110 is the same as the current EDID content, no recording is performed. When the receiving device 120 replaces the connected first display device 130, it can compare with the currently saved EDID information, and if it is different, the EDID status flag is cleared. And the receiving device transmits the EDID data to the transmitting device 110.

Referring to FIG. 1, each transmitting device 110 of the HDMI intelligent playing system can output a video signal according to a display coefficient and a transmission mode of the video signal to adjust a compression ratio and a frame rate of the video signal. The transmission mode of the audio and video signal may be, for example, a video mode, a presentation mode, or a low-power mode. For the film mode, the smoothness of the screen is the main consideration. Therefore, the transmission bandwidth can be set to the maximum value that the system can guarantee. The transmitting device can dynamically update the number of packet loss (Packet Loss) and error frame (Error Frame) transmitted by the receiving device. Adjust the compression ratio of the compression code of the video signal and the frame rate so that the output bandwidth can meet the settings. The briefing mode is based on the refinement of the picture. It can fix the compression ratio of the compression code of the video signal and the dynamic adjustment rate so that the output bandwidth does not exceed the system load. The low power mode takes the lowest overall power consumption as the main consideration, and can fix the compression ratio of the compression coding of the video and audio signals to reduce the amount of data transmitted, and compare the difference between the front and back pictures. If the front and rear pictures are identical, they are not transmitted. After the picture.

3 is a schematic diagram consistent with an embodiment of the disclosure, illustrating that the receiving device of the HDMI intelligent playback system of FIG. 1 selectively outputs the audio and video signals of two of the three transmitting devices to the display device. In Fig. 3, the three transfer devices are respectively a DVD player, a notebook computer and another notebook computer, and the display device 130 is a flat display. As shown in FIG. 3, the audio and video signals of the two notebook computers are transmitted via wireless transmission 310 to the receiving device 120 for display on the display device flat panel display.

The HDMI smart playing system may further comprise a transmitting device for outputting the video signal of the transmitting device to the other display device via the HDMI interface. FIG. 4 is a schematic diagram consistent with an embodiment of the disclosure, illustrating that two transmitting devices of the HDMI smart playing system of FIG. 1 respectively output the respective output audio and video signals to other display devices 410 and 420 via the HDMI interface.

The HDMI smart play system may further comprise a receiving device receiving the video signal transmitted by the at least one mobile device. The receiving device has an operating system (OS) of the mobile device, which may be an operating system such as iOS / Android / Windows. The receiving device may be provided with an operating system of the mobile device to cooperate with the receiving video signal transmitted by the mobile device.

The HDMI smart play system can also include a receiving device receiving video and audio signals via a universal serial bus (USB) or HDMI interface, as shown in FIG. Referring to FIG. 5, the receiving device selectively displays a notebook computer and a video signal via a universal serial bus (USB) or HDMI interface 510 on the display device flat display.

The above disclosed technology provides an HDMI intelligent playback technology, and the technical aspects involved in the technology cover image compression, wireless transmission, and HDMI. Pairing with the receiving device via the transmitting device to select the transmission channel and adjust the WMM parameters, MCS and packet retransmission mechanism for optimal resolution adjustment. And transmitting a plurality of video signals to the display device according to the display coefficient of the display device and the transmission mode of the audio and video signals by adjusting the compression ratio and the frame rate of the video signal.

The above is only the embodiment of the disclosure, and the scope of the disclosure is not limited thereto. All changes and modifications made to the scope of the patent application of the present invention are intended to fall within the scope of the invention.

110‧‧‧Transfer device
120‧‧‧ receiving device
130‧‧‧Display device
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
310‧‧‧Wireless transmission
410‧‧‧Other display devices
420‧‧‧Other display devices
510‧‧‧USB or HDMI interface

1 is a schematic diagram consistent with an embodiment of the disclosure, illustrating an HDMI smart playback system.

2 is a schematic diagram consistent with an embodiment of the disclosure, illustrating a transmitting device and a receiving device of the HDMI intelligent playback system of FIG. 1.

3 is a schematic diagram consistent with an embodiment of the disclosure, illustrating that the receiving device of the HDMI intelligent playback system of FIG. 1 selectively outputs the audio and video signals of two of the three transmitting devices to the display device.

4 is a schematic diagram consistent with an embodiment of the disclosure, illustrating that two transmission devices of the HDMI intelligent playback system of FIG. 1 respectively output respective audio and video signals to other display devices via an HDMI interface.

FIG. 5 is a schematic diagram consistent with an embodiment of the disclosure, illustrating that the receiving device of the HDMI intelligent playing system of FIG. 1 selectively connects a notebook computer and a video signal via a universal serial bus (USB) or HDMI interface. Displayed on the display device.

110‧‧‧Transfer device

120‧‧‧ receiving device

130‧‧‧Display device

Claims (9)

An HDMI intelligent playing system, the system comprising: at least one transmitting device, each transmitting device of the at least one transmitting device receiving an audio and video signal conforming to the HDMI interface, and outputting the video and audio signal by wireless transmission; and a receiving device to wirelessly Transmitting and receiving the video signal outputted by each of the at least one transmitting device, and selectively outputting the video signal of the at least one of the one or more transmitting devices to a display device in compliance with the HDMI interface. The system of claim 1, wherein the video signal is a signal such as an audio, a picture, or a video program. The system of claim 1, wherein the encoding of the video signal is a MJPEG encoding. The system of claim 1, wherein the transmission mode of the video signal comprises at least one of a movie mode, a presentation mode, and a low power mode. The system of claim 1, wherein the transmitting device further comprises a video receiving module for receiving the audio and video signal conforming to the HDMI interface; and an image compression/encapsulation module for compressing and encoding the video signal. Packetization is performed to facilitate wireless transmission of subsequent packets; and a wireless transmission module compresses and encodes the encoded video signal for wireless transmission. The system of claim 1, wherein the receiving device further comprises a wireless receiving module for wirelessly transmitting to receive the video signal; and a packet processing/image decompression module for processing and performing the received packet. Decompressing processing of the video signal; and an audio and video output module outputting the video signal conforming to the HDMI interface to the display device. The system of claim 1, further comprising the transmitting device outputting the video signal output by the transmitting device to another display device via an HDMI interface. The system of claim 1, further comprising the receiving device receiving the video signal transmitted by the at least one mobile device. The system of claim 1, further comprising receiving, by the receiving device, a video signal via a universal serial bus (USB) or an HDMI interface.