CN115550594B - Extended function method of conference system and conference system with extended function - Google Patents

Abstract

The invention provides a conference system and an extended function method thereof, comprising the following steps: providing a first circuit board and a second circuit board which are arranged in the receiving device; receiving the first wireless packet transmitted from the first transmitting device only through the second communication module in the second circuit board; the second processor in the second circuit board controls the second communication module to execute a unpacking procedure on the first wireless package so as to obtain first compressed video and audio data; the second processor in the second circuit board generates an instruction signal to enable the first processor in the first circuit board to receive the first compressed video and audio data through the data channel and decode the first compressed video and audio data so as to enable the first processor to acquire the first video and audio content of the first transmission device.

Description

Conference system expansion function method and conference system with expandable functions

Technical Field

The present invention relates to a method for expanding the functions of a conference system and a conference system with expandable functions, and in particular to a method for expanding the functions of a conference system by using at least one additional circuit board and a system thereof.

Background Art

With the rapid development of technology, various projector systems and conference report systems have been rapidly developed and are also used in daily life. The conference report system can be combined with the projector system to increase the convenience of the reporter when presenting data. Most of the current conference report systems use wireless communication data transmission as the mainstream. Wireless communication data transmission can be divided into two modes. In the first mode, the computer used by the members participating in the meeting must be installed with specific software, and the computer can identify devices such as hard drives, universal serial buses (USB), or read-only memory disks (CD-ROM). Then, the data in the above-mentioned physical or virtual storage devices is transmitted to the screen or display through the wireless network. In the second mode, the computer used by the members participating in the meeting can be connected to the transmission device. When the transmission device is connected to the screen or display through the receiving device, the data in the computer can be projected on the screen or display. In recent years, by using wireless communication data transmission to conduct conference reports, operational efficiency and convenience can be increased.

However, the hardware specifications of the receiving device must comply with the established standard design and meet the requirements of being thin, light and power-saving. Therefore, the hardware functions of the receiving device are limited by the native hardware standards. When the user wants to expand the functions of the receiving device, it is often necessary to redesign the circuits and chips in the receiving device. In other words, the receiving device cannot expand the hardware functions in a simple way based on the native circuit. Therefore, when the user wants to add a new hardware function to the receiving device, the entire circuit inside the receiving device must be redesigned and manufactured, resulting in high costs and extra production time. Therefore, developing a receiving device that is easy to expand hardware functions is an important issue.

Summary of the invention

The present invention provides a conference system and a method for expanding its functions to solve the above problems.

Based on the above purpose, the present invention proposes a method for expanding the functions of a conference system, which includes a first transmitting device and a receiving device coupled to the first transmitting device. The method includes: providing a first circuit board and a second circuit board disposed in the receiving device; receiving a first wireless packet transmitted by the first transmitting device only through a second communication module in the second circuit board; a second processor in the second circuit board controls the second communication module to perform a depacketization procedure on the first wireless packet to obtain first compressed audio and video data; and the second processor in the second circuit board generates an instruction signal to enable the first processor in the first circuit board to receive the first compressed audio and video data through a data data channel and decode the first compressed audio and video data so that the first processor obtains the first audio and video content of the first transmitting device; wherein the first circuit board and the second circuit board are two separate circuit boards before being connected.

Preferably, it also includes: receiving the second wireless packet transmitted by the second transmitting device only through the second communication module in the second circuit board; the second processor in the second circuit board controls the second communication module to execute the depacketization program on the second wireless packet to obtain second compressed audio and video data; the second processor in the second circuit board generates the command signal to enable the first processor in the first circuit board to receive the second compressed audio and video data through the data channel and decode the second compressed audio and video data so that the first processor obtains the second audio and video content of the second transmitting device.

Preferably, the method further comprises: after the first processor obtains the first audio-visual content and the second audio-visual content, executing a screen segmentation and/or synthesis procedure according to the first audio-visual content and the second audio-visual content to generate synthesized audio-visual content.

Preferably, it also includes: after the first processor obtains the first audio and video content and the second audio and video content, the first audio and video content and the second audio and video content are transmitted to the second processor; and after the second processor obtains the first audio and video content and the second audio and video content, it executes a screen segmentation and/or synthesis program according to the first audio and video content and the second audio and video content to generate a synthesized audio and video content.

Preferably, it also includes: after the first processor obtains the first audio and video content and the second audio and video content, the first audio and video content and the second audio and video content are transmitted to the second processor; and the second processor transmits the first audio and video content or the second audio and video content to the first audio and video output port and/or the second audio and video output port; wherein the second circuit board includes the first audio and video output port and the second audio and video output port.

Preferably, the second communication module in the second circuit board supports a second wireless communication specification, the first communication module in the first circuit board supports a first wireless communication specification, and the second wireless communication specification is superior to the first wireless communication specification.

Preferably, the first circuit board does not support wireless communication function.

Preferably, it also includes: connecting the first circuit board and the second circuit board so that there is a command channel and a data channel between the first circuit board and the second circuit board; wherein the second circuit board includes a first audio and video output port and a second audio and video output port, and the first circuit board includes a third audio and video output port and a data output port.

Preferably, the first circuit board is a basic function board, the second circuit board is an extended function board, and the clock frequency of the first processor is greater than the clock frequency of the second processor.

Preferably, the first processor in the first circuit board receives the first compressed audio and video data through the data channel, specifically: the first processor in the first circuit board receives the first compressed audio and video data forwarded by the second circuit board from the third circuit board through the data channel, and the third circuit board is coupled to the first circuit board and the second circuit board.

Based on the above objectives, the present invention further provides a conference system with expandable functions, which comprises:

A first circuit board including a first processor;

A second circuit board is connected to the first circuit board, and the second circuit board includes: a second communication module; and a second processor coupled to the second communication module; and

A first transmission device connected to the second circuit board;

Wherein, the first circuit board and the second circuit board are arranged in the receiving device, the second circuit board only receives the first wireless packet transmitted by the first transmitting device through the second communication module, the second processor in the second circuit board controls the second communication module to execute the depacketization program on the first wireless packet to obtain the first compressed audio and video data; the second processor in the second circuit board generates an instruction signal to enable the first processor in the first circuit board to receive the first compressed audio and video data through the data channel and decode the first compressed audio and video data so that the first processor obtains the first audio and video content of the first transmitting device; and the first circuit board and the second circuit board are two separate circuit boards before being connected.

Preferably, it also includes:

A second transmission device connected to the second circuit board;

Among them, the second circuit board only receives the second wireless packet transmitted by the second transmitting device through the second communication module, and the second processor in the second circuit board controls the second communication module to execute the depacketization program on the second wireless packet to obtain the second compressed audio and video data; the second processor in the second circuit board generates the instruction signal to enable the first processor in the first circuit board to receive the second compressed audio and video data through the data channel and decode the second compressed audio and video data so that the first processor can obtain the second audio and video content of the second transmitting device.

Preferably, after obtaining the first audio-visual content and the second audio-visual content, the first processor executes a screen segmentation and/or synthesis process according to the first audio-visual content and the second audio-visual content to generate synthesized audio-visual content.

Preferably, after the first processor obtains the first audio-visual content and the second audio-visual content, the first audio-visual content and the second audio-visual content are transmitted to the second processor; and after the second processor obtains the first audio-visual content and the second audio-visual content, it executes a screen segmentation and/or synthesis program according to the first audio-visual content and the second audio-visual content to generate synthesized audio-visual content.

Preferably, the second circuit board also includes a first audio and video output port and a second audio and video output port. After the first processor obtains the first audio and video content and the second audio and video content, the first audio and video content and the second audio and video content are transmitted to the second processor, and the second processor transmits the first audio and video content or the second audio and video content to the first audio and video output port and/or the second audio and video output port.

Preferably, the first circuit board also includes a first communication module, the first communication module is coupled to the first processor, the second communication module in the second circuit board supports a second wireless communication specification, the first communication module in the first circuit board supports a first wireless communication specification, and the second wireless communication specification is superior to the first wireless communication specification.

Preferably, the first circuit board does not support wireless communication function.

Preferably, after the first circuit board and the second circuit board are connected, there is a command channel and a data channel between the first circuit board and the second circuit board, the second circuit board also includes a first audio and video output port and a second audio and video output port, the first audio and video output port and the second audio and video output port are coupled to the second processor, the first circuit board also includes a third audio and video output port and a data data output port, and the third audio and video output port and the data data output port are coupled to the first processor.

Preferably, the first circuit board is a basic function board, the second circuit board is an extended function board, and the clock frequency of the first processor is greater than the clock frequency of the second processor.

Preferably, the first processor in the first circuit board receives the first compressed audio and video data through the data channel, specifically: the first processor in the first circuit board receives the first compressed audio and video data forwarded by the second circuit board from the third circuit board through the data channel, and the third circuit board is coupled to the first circuit board and the second circuit board.

The conference system and expansion method proposed in the present invention have a basic function board and an expansion function board in the receiving device. The basic function board has general and basic hardware functions, while the expansion function board has advanced hardware functions. In order to expand the functions of the conference system, the basic function board can disable some basic hardware functions, and then control the expansion function board to execute the advanced hardware functions. Moreover, the basic function board only needs to execute the decoding function. In other words, in the conference system of the present invention, when the user wants to expand the hardware functions, as long as circuit boards with different functions (expansion function boards) are provided, no matter what connection method is used, the conference system can execute any high-level hardware functions or computing functions under the condition that the basic function board only needs to execute the decoding function.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram of an embodiment of a conference system with expandable functions according to the present invention.

FIG. 2 is a schematic diagram of data transmission in the conference system with expandable functions in FIG. 1 .

FIG. 3 is a schematic diagram of a first data transmission mode in which an additional circuit board is introduced to expand the hardware function in the conference system with expandable functions of FIG. 1 .

FIG. 4 is a schematic diagram of a second data transmission mode in which an additional circuit board is introduced to expand the hardware function in the conference system with expandable functions in FIG. 1 .

FIG. 5 is a flow chart of a method for executing an expansion function of the conference system with expandable functions in FIG. 1 .

DETAILED DESCRIPTION

In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

FIG. 1 is a block diagram of an embodiment of a conference system 100 with expandable functions of the present invention. For the convenience of description, it is hereinafter referred to as the conference system 100. The conference system 100 includes a first circuit board PCB1, a second circuit board PCB2 and at least one transmission device, such as a first transmission device TX1 and/or a second transmission device TX2. The first circuit board PCB1 may include a first processor CPU1 and a first communication module WF1. The first communication module WF1 may be a wireless communication module, such as a wireless fidelity (Wi-Fi) module or a Bluetooth module, etc., for receiving wireless signals. The first processor CPU1 is coupled to the first communication module WF1. The second circuit board PCB2 is connected to the first circuit board PCB1. The second circuit board PCB2 may include a second communication module WF2 and a second processor CPU2. The second processor CPU2 is coupled to the second communication module WF2. The second communication module WF2 may be a wireless communication module, such as a wireless fidelity module or a Bluetooth module, etc., for receiving wireless signals. In addition, the first communication module WF1 in the first circuit board PCB1 supports the first wireless communication specification. The second communication module WF2 in the second circuit board PCB2 supports the second wireless communication specification. The first wireless communication specification and the second wireless communication specification may be different versions of communication standards under the same protocol. For example, the second wireless communication specification may be the specification of the sixth generation wireless fidelity protocol (Wi-Fi 6). The first wireless communication specification may be the specification of the fifth generation wireless fidelity protocol (Wi-Fi 5). In addition, the second wireless communication specification may be better than the first wireless communication specification. For example, the specification of the sixth generation wireless fidelity protocol is better than the specification of the fifth generation wireless fidelity protocol in terms of performance, transmission speed and anti-noise capability. In the conference system 100, the first circuit board PCB1 may be a basic function board. The definition of the basic function board is: a circuit board that meets the established standards and has basic functions when the conference system 100 leaves the factory. However, as hardware requirements increase, the first circuit board PCB1 may not be sufficient. For example, the specification of the sixth generation wireless fidelity protocol has become a trend, but the first circuit board PCB1 only supports the specification of the fifth generation wireless fidelity protocol. Therefore, the conference system 100 introduces a second circuit board PCB2 to add additional hardware functions. In other words, the second circuit board PCB2 is an expansion function board. In addition, the clock frequency of the first processor CPU1 is greater than the clock frequency of the second processor CPU2. The second circuit board PCB2 may also include a first audio and video output port HDMI21 and a second audio and video output port HDMI22. The first audio and video output port HDMI21 and the second audio and video output port HDMI22 may be high-definition multimedia interface (HDMI) output ports, but there is no such limitation. The second circuit board PCB2 may also include at least one data output port, such as Universal Serial Bus (Universal Serial Bus) output ports USB21 and USB22. In addition, the first audio and video output port HDMI21, the second audio and video output port HDMI22 and at least one data output port (USB21 and USB22) of the second circuit board PCB2 are coupled to the second processor CPU2. The first circuit board PCB1 may also include a third audio and video output port HDMI11 and a data output port USB11. The third audio and video output port HDMI11 may be a HDMI output port. The data output port USB11 can be a universal serial bus output port. The third video output port HDMI11 and the data output port USB11 are coupled to the first processor CPU1. The first processor CPU1 of the first circuit board PCB1 and the second processor CPU2 of the second circuit board PCB2 can communicate via a command channel and a data channel. In addition, the first transmission device TX1 and/or the second transmission device TX2 are communicatively connected to the second circuit board PCB2.

In the conference system 100, the first circuit board PCB1 and the second circuit board PCB2 are arranged in the receiving device RX. Moreover, the second circuit board PCB2 only receives the first wireless packet transmitted by the first transmitting device TX1 through the second communication module WF2. The second processor CPU2 in the second circuit board PCB2 controls the second communication module WF2 to perform a decapsulation procedure on the first wireless packet to obtain the first compressed audio and video data. Then, the second processor CPU2 in the second circuit board PCB2 can generate an instruction signal to enable the first processor CPU1 in the first circuit board PCB1 to receive the first compressed audio and video data through the data channel and decode the first compressed audio and video data so that the first processor CPU1 can obtain the first audio and video content of the first transmitting device TX1. In other words, in the conference system 100, although the first circuit board PCB1 is a basic functional board with poor functions, due to the introduction of the function expansion of the second circuit board PCB2 to assist the first circuit board PCB1, the first processor CPU1 of the first circuit board PCB1 only needs to perform the data decoding operation. Therefore, even if the computing level of the first processor CPU1 is poor, due to the assistance of the second circuit board PCB2, the conference system 100 can still be functionally expanded. Furthermore, the first circuit board PCB1 and the second circuit board PCB2 are two separate circuit boards before being connected. However, in other embodiments, the first processor CPU1 and the second processor CPU2 may be two processors of the same computing level, and even the computing level of the first processor CPU1 may be stronger than that of the second processor CPU2. Any reasonable hardware changes fall within the scope of the present invention.

FIG. 2 is a schematic diagram of data transmission in a conference system 100 with expandable functions. The first transmission device TX1 can be used for receiving any device of a multimedia image source, such as a computer, a mobile phone, an audio and video player, etc. It should be understood that the first transmission device TX1 and the computer are two separate devices before being connected. When the first transmission device TX1 is coupled to the computer, the first transmission device TX1 can be used to trigger the computer to transmit audio and video to the first transmission device TX1. The first transmission device TX1 can also store information of Extended Display Identification Data (EDID), so the first transmission device TX1 can also be regarded as a virtual display device. After the first transmission device TX1 receives the first multimedia image data, the first multimedia image can be transmitted to the receiving device RX through the data path F1 using a wireless network, as described below. As mentioned above, the receiving device RX has a first circuit board PCB1 and a second circuit board PCB2. The second processor CPU2 of the receiving device RX can control the second communication module WF2 through the data path F2 to receive the first wireless packet corresponding to the first multimedia image data sent by the first transmission device TX1. The first wireless packet may include the first setting information of the wireless packet (such as Header information) and the first compressed audio and video data. The second processor CPU2 of the receiving device RX can also control the second communication module WF2 through the data path F2 to execute the decompression program on the first wireless packet and extract part of the first compressed audio and video data. After obtaining the first compressed audio and video data, the second processor CPU2 in the second circuit board PCB2 can transmit the command signal to the first processor CPU1 in the first circuit board PCB1 through the data path F3. Here, the data path F3 can be regarded as a command channel. After receiving the command signal, the first processor CPU1 can receive the first compressed audio and video data through the data path F4. Here, the data path F4 can be regarded as a data channel. After the first processor CPU1 receives the first compressed audio and video data, it can decode the first compressed audio and video data. Finally, the first processor CPU1 can transmit the decoded audio and video data to the first display 10 through the data path F5 and the data path F6. Alternatively, the first processor CPU1 can transmit the decoded audio and video data to the second circuit board PCB2 through the data path F4. Then, the second processor CPU2 in the second circuit board PCB2 transmits the decoded audio and video data to the second display 11 through the data path F7. Any reasonable technical changes or hardware replacements fall within the scope of the present invention. For example, the first transmitting device TX1 can also transmit the decoded audio and video data wirelessly through the application program using the second communication module WF2. Alternatively, the conference system 100 can also turn on the online conference mode to synthesize, integrate, or display the multimedia content of more than two transmitting devices side by side. Alternatively, the conference system 100 can also introduce multiple receiving devices. Multiple receiving devices can be interconnected with each other via the network. The first transmitting device TX1 can transmit the decoded audio and video data to another receiving device through the second communication module WF2 for data sharing. The connection mode of the two receiving devices can be Wi-Fi Direct or Internet Protocol address direct connection.

In the conference system 100, the receiving device RX can be connected to multiple transmitting devices at the same time. For example, the receiving device RX can be connected to the first transmitting device TX1 and the second transmitting device TX2 at the same time. The interactive relationship between the second transmitting device TX2 and the receiving device RX is similar to the interactive relationship between the first transmitting device TX1 and the receiving device RX, which is described as follows. The second circuit board PCB2 receives the second wireless packet transmitted by the second transmitting device TX2 only through the second communication module WF2. The second processor CPU2 in the second circuit board PCB2 controls the second communication module WF2 to perform a depacketization procedure on the second wireless packet to obtain the second compressed audio and video data. Then, the second processor CPU2 in the second circuit board PCB2 can generate an instruction signal to enable the first processor CPU1 in the first circuit board PCB1 to receive the second compressed audio and video data through the data channel and decode the second compressed audio and video data so that the first processor CPU1 obtains the second audio and video content of the second transmitting device TX2. In other words, in the conference system 100, although the first circuit board PCB1 is a basic functional board with poor functions, due to the introduction of the function expansion of the second circuit board PCB2 to assist the first circuit board PCB1, the first processor CPU1 of the first circuit board PCB1 only needs to perform the data decoding operation. Therefore, even if the operation level of the first processor CPU1 is poor, due to the assistance of the second circuit board PCB2, the conference system 100 can still perform functional expansion.

Furthermore, after the conference system 100 obtains the first audio-visual content and the second audio-visual content, a screen segmentation and/or synthesis program can be executed to generate a synthesized audio-visual content, as described below. As mentioned above, the first audio-visual content and the second audio-visual content can be obtained by decoding by the first processor CPU1. In the first mode, after the first processor CPU1 obtains the first audio-visual content and the second audio-visual content, a screen segmentation and/or synthesis program can be executed based on the first audio-visual content and the second audio-visual content to generate a synthesized audio-visual content. In other words, in the first mode, the screen segmentation and/or synthesis program is executed by the first processor CPU1. However, as mentioned above, if the computing power of the first processor CPU1 is weak, the screen segmentation and/or synthesis program can be executed with the assistance of the second processor CPU2. For example, in the second mode, after the first processor CPU1 obtains the first audio-visual content and the second audio-visual content, the first audio-visual content and the second audio-visual content can be transmitted to the second processor CPU2. After the second processor CPU2 obtains the first audio-visual content and the second audio-visual content, it can execute the screen segmentation and/or synthesis program according to the first audio-visual content and the second audio-visual content to generate the synthesized audio-visual content. In other words, in the second mode, the screen segmentation and/or synthesis program is executed by the second processor CPU2. The first processor CPU1 and the second processor CPU2 of the conference system 100 can perform calculations independently or collaboratively. Any reasonable technical changes belong to the scope disclosed by the present invention. In addition, in the first circuit board PCB1, the first communication module WF1 can also be omitted. In other words, when the first circuit board PCB1 does not support the wireless communication function, the conference system 100 can use the second communication module WF2 in the second circuit board PCB2 for wireless data access. In addition, the first audio-visual content and the second audio-visual content can also be transmitted wirelessly through the application program using the second communication module WF2. Alternatively, the conference system 100 can also turn on the online conference mode to synthesize, integrate, or display the multimedia content of more than two transmitting devices side by side. Alternatively, the conference system 100 can also introduce multiple receiving devices. Multiple receiving devices can be interconnected with each other using a network. The first audio and video content and the second audio and video content can be transmitted to another receiving device through the second communication module WF2 for data sharing. The connection mode of the two receiving devices can be Wi-Fi direct connection or Internet Protocol address direct connection. In addition, the conference system 100 can also perform audio and video separation processing. For example, the sound effect part of the first audio and video content and the second audio and video content can be processed by the second processor CPU2. Then, the processed sound effect part can be transmitted to the display through the connection port. For example, the processed sound effect part can be transmitted to the second display 11 connected to the second audio and video output port HDMI22 through the second processor CPU2 to provide the sound effect of the output screen. Similarly, for example, the processed sound effect part can be transmitted back to the first processor CPU1 through the second processor CPU2. Therefore, the first processor CPU1 can transmit the processed sound effect part to the first display 10 connected to the third audio and video output port HDMI11 to provide the sound effect of the output screen. Furthermore, the conference system 100 can also select whether to output sound effects according to the output image (provided by the first transmission device TX1, the second transmission device TX2, or both). Alternatively, the conference system 100 can also select whether to output sound effects according to the sound effect mode.

FIG. 3 is a schematic diagram of a first data transmission mode in which an additional circuit board is introduced to expand the hardware function in a conference system 100 with expandable functions. FIG. 4 is a schematic diagram of a second data transmission mode in which an additional circuit board is introduced to expand the hardware function in a conference system 100 with expandable functions. The additional circuit board shown in FIG. 3 and FIG. 4 is referred to as a third circuit board PCB3 herein. The first circuit board PCB1, the second circuit board PCB2 and the third circuit board PCB3 in FIG. 3 may be in a serial connection mode. That is, the third circuit board PCB3 may be coupled to the first circuit board PCB1, and the second circuit board PCB2 may be coupled to the first circuit board PCB1 through the third circuit board PCB3. The second circuit board PCB2 and the third circuit board PCB3 in FIG. 4 may be independently coupled to the first circuit board PCB1. Since the second circuit board PCB2 and the third circuit board PCB3 in FIG. 4 are independently coupled to the first circuit board PCB1, the first circuit board PCB1 may simultaneously expand more than two hardware functions. Furthermore, in FIG. 4, the operation modes of the first circuit board PCB1 and the third circuit board PCB3, and the operation modes of the first circuit board PCB1 and the second circuit board PCB2, are similar to the aforementioned embodiments, and therefore will not be described in detail herein. In FIG. 3 , since the third circuit board PCB3 is coupled to the first circuit board PCB1 and the second circuit board PCB2 , the third circuit board PCB3 can perform the function of data forwarding (Relay). In other words, after the second communication module WF2 in the second circuit board PCB2 decapsulates the packet and obtains the first compressed audio and video data, the first processor CPU1 in the first circuit board PCB1 can receive the first compressed audio and video data forwarded by the third circuit board PCB3 from the second circuit board PCB2 through the data channel. Moreover, in FIG. 3 and FIG. 4 , the architecture of the third circuit board PCB3 can also be similar to the second circuit board PCB2. For example, the second circuit board PCB2 can include a first audio and video output port HDMI21 and a second audio and video output port HDMI22. After the first processor CPU1 obtains the first audio and video content and the second audio and video content, it can transmit the first audio and video content and the second audio and video content to the second processor CPU2. The second processor CPU2 then transmits the first audio and video content or the second audio and video content to the first audio and video output port HDMI21 and/or the second audio and video output port HDMI22. Similarly, the third circuit board PCB3 may include a fourth audio and video output port HDMI31 and a fifth audio and video output port HDMI32. After the first processor CPU1 obtains the first audio and video content and the second audio and video content, it may transmit the first audio and video content and the second audio and video content to the third processor CPU3. The third processor CPU3 then transmits the first audio and video content or the second audio and video content to the fourth audio and video output port HDMI31 and/or the fifth audio and video output port HDMI32. In one embodiment, the second circuit board PCB2, as mentioned above, may be an expansion board for a wireless communication network, such as the second communication module WF2 therein may be a sixth generation wireless fidelity protocol (Wi-Fi 6) specification, so it can be used to upgrade the specification of the first communication module WF1 in the basic board. The third circuit board PCB3 may be an expansion board for an output port, for example, the third circuit board PCB3 may have a specific number of HDMI connection ports, so it can be regarded as upgrading the compatibility of the connection ports built into the basic board. In addition, the second circuit board PCB2 and the third circuit board PCB3 may have independent processors or may share a processor. The shared processor can be disposed in the second circuit board PCB2 or in the third circuit board PCB3. In other words, in the conference system 100, when the user wants to expand the hardware function, as long as a circuit board with different functions (expansion function board) is provided, no matter what connection method is used, the conference system 100 can execute any high-level hardware function or computing function when the basic function board only needs to execute the decoding function.

In addition, the internal structure of the expansion function board (second circuit board PCB2) of the conference system 100 can also be transformed in a reasonable manner. For example, the second circuit board PCB2 can include an audio and video separation module. The audio and video separation module can be an independent hardware circuit coupled to the second processor CPU2, or it can be executed by software in the second processor CPU2. The second circuit board PCB2 can also include an image output port and a sound output port. The image output port and the sound output port can be coupled to the audio and video separation module. The audio and video separation module can perform audio and video separation on any multimedia data. For example, after the first processor CPU1 obtains the first audio and video content, the first processor CPU1 can use the audio and video separation module to perform audio and video separation on the first audio and video content to generate first image data and first sound data. After the first image data and the first sound data are generated, the audio and video separation module transmits the first image data to the image output port. The audio and video separation module transmits the first sound data to the sound output port. Alternatively, after the first image data and the first sound data are generated, the conference system 100 can shield the first image data or the first sound data according to the user's setting, thereby generating a black screen/mute effect.

FIG5 is a flow chart of the method for executing the expanded function by the conference system 100 with expandable functions. The flow of the method for executing the expanded function by the conference system 100 includes steps S501 to S504. Any reasonable technical changes fall within the scope disclosed by the present invention. The description of steps S501 to S504 is as follows.

Step S501: providing a first circuit board PCB1 and a second circuit board PCB2 disposed in a receiving device RX;

Step S502: receiving the first wireless packet transmitted by the first transmitting device TX1 only through the second communication module WF2 in the second circuit board PCB2;

Step S503: the second processor CPU2 in the second circuit board PCB2 controls the second communication module WF2 to execute a depacketization procedure on the first wireless packet to obtain the first compressed audio and video data;

Step S504: The second processor CPU2 in the second circuit board PCB2 generates a command signal to enable the first processor CPU1 in the first circuit board PCB1 to receive the first compressed audio and video data through the data channel and decode the first compressed audio and video data so that the first processor CPU1 obtains the first audio and video content of the first transmission device TX1.

The details of step S501 to step S504 have been described in detail above, so they will not be repeated here. In the conference system 100, since the second circuit board PCB2 is introduced to expand additional functions, the first circuit board PCB1 only needs to maintain the decoding function. Therefore, the conference system 100 can expand the hardware functions in a convenient way.

In summary, the present invention describes a conference system with expandable functions. The conference system's receiving device contains a basic function board and an expansion function board. The basic function board has general and basic hardware functions, while the expansion function board has advanced hardware functions. In order to expand the functions of the conference system, the basic function board can disable some basic hardware functions, and then control the expansion function board to execute advanced hardware functions. Moreover, the basic function board only needs to execute the decoding function. In other words, in the conference system of the present invention, when the user wants to expand the hardware functions, as long as circuit boards with different functions (expansion function boards) are provided, no matter what connection method is used, the conference system can execute any high-level hardware functions or computing functions under the condition that the basic function board only needs to execute the decoding function.

The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims (18)

1. A method for expanding functions of a conference system, the conference system comprising a first transmitting device and a receiving device coupled to the first transmitting device, wherein the method comprises: A first circuit board, a second circuit board and a third circuit board are provided in the receiving device, wherein the first circuit board and the second circuit board are two separate circuit boards before being connected, and the third circuit board is coupled to the first circuit board and the second circuit board respectively; Receiving the first wireless packet transmitted by the first transmitting device only through the second communication module in the second circuit board; The second processor in the second circuit board controls the second communication module to execute a depacketization procedure on the first wireless packet to obtain the first compressed audio and video data; The second processor in the second circuit board generates a command signal to enable the first processor in the first circuit board to receive the first compressed audio and video data forwarded from the second circuit board by the third circuit board through the data channel; the first processor decodes the first compressed audio and video data to enable the first processor to obtain the first audio and video content of the first transmitting device; Transmitting the first audio-visual content from the first processor to the second processor via the third circuit board; Processing the first audio-visual content by the second processor to generate processed audio-visual content; and Transmitting the processed audio and video content from the second processor to the first processor via the third circuit board; The third circuit board is also used to expand the output port. 2. The method according to claim 1, further comprising: Receiving the second wireless packet transmitted by the second transmitting device only through the second communication module in the second circuit board; The second processor in the second circuit board controls the second communication module to execute a depacketization procedure on the second wireless packet to obtain second compressed audio and video data; The second processor in the second circuit board generates a command signal to enable the first processor in the first circuit board to receive the second compressed audio and video data through the data channel and decode the second compressed audio and video data so that the first processor obtains the second audio and video content of the second transmission device. 3. The method according to claim 2, further comprising: After obtaining the first audio-visual content and the second audio-visual content, the first processor executes a picture segmentation and/or synthesis process according to the first audio-visual content and the second audio-visual content to generate synthesized audio-visual content. 4. The method according to claim 2, further comprising: After the first processor obtains the first audio-visual content and the second audio-visual content, the first audio-visual content and the second audio-visual content are transmitted to the second processor; and After obtaining the first audio-visual content and the second audio-visual content, the second processor executes a picture segmentation and/or synthesis process according to the first audio-visual content and the second audio-visual content to generate synthesized audio-visual content. 5. The method according to claim 2, further comprising: After the first processor obtains the first audio-visual content and the second audio-visual content, the first audio-visual content and the second audio-visual content are transmitted to the second processor; and The second processor transmits the first audio-visual content or the second audio-visual content to the first audio-visual output port and/or the second audio-visual output port; The second circuit board includes the first audio and video output port and the second audio and video output port. 6. The method as claimed in claim 1 is characterized in that the second communication module in the second circuit board supports a second wireless communication specification, the first communication module in the first circuit board supports a first wireless communication specification, and the second wireless communication specification is superior to the first wireless communication specification. 7. The method of claim 1, wherein the first circuit board does not support wireless communication function. 8. The method according to claim 1, further comprising: Connecting the first circuit board and the second circuit board so that there is a command channel and a data channel between the first circuit board and the second circuit board; The second circuit board includes a first audio-visual output port and a second audio-visual output port, and the first circuit board includes a third audio-visual output port and a data output port. 9. The method as claimed in claim 1, characterized in that the first circuit board is a basic function board, the second circuit board is an expansion function board, and the clock frequency of the first processor is greater than the clock frequency of the second processor. 10. A conference system with expandable functions, characterized by comprising: A first circuit board including a first processor; A second circuit board, wherein the first circuit board and the second circuit board are two separate circuit boards before being connected, and the second circuit board comprises: a second communication module; and A second processor, coupled to the second communication module; A third circuit board is coupled to the first circuit board and the second circuit board respectively; and A first transmission device connected to the second circuit board; The first circuit board, the second circuit board and the third circuit board are arranged in a receiving device, the second circuit board receives the first wireless packet transmitted by the first transmitting device only through the second communication module, the second processor in the second circuit board controls the second communication module to perform a depacketization procedure on the first wireless packet to obtain first compressed audio and video data; the second processor in the second circuit board generates an instruction signal to enable the first processor in the first circuit board to receive the first compressed audio and video data forwarded from the second circuit board by the third circuit board through a data channel, the first processor decodes the first compressed audio and video data, so that the first processor obtains the first audio and video content of the first transmitting device; the first audio and video content is transmitted from the first processor to the second processor through the third circuit board; the first audio and video content is processed by the second processor to generate processed audio and video content; the processed audio and video content is transmitted from the second processor to the first processor through the third circuit board; The third circuit board is also used to expand the output port. 11. The system of claim 10, further comprising: A second transmission device connected to the second circuit board; Among them, the second circuit board only receives the second wireless packet transmitted by the second transmitting device through the second communication module, and the second processor in the second circuit board controls the second communication module to execute a depacketization program on the second wireless packet to obtain second compressed audio and video data; the second processor in the second circuit board generates an instruction signal to enable the first processor in the first circuit board to receive the second compressed audio and video data through the data channel and decode the second compressed audio and video data so that the first processor obtains the second audio and video content of the second transmitting device. 12. The system as claimed in claim 11, characterized in that after the first processor obtains the first audio-visual content and the second audio-visual content, it executes a screen segmentation and/or synthesis process according to the first audio-visual content and the second audio-visual content to generate synthesized audio-visual content. 13. The system as described in claim 11 is characterized in that after the first processor obtains the first audio-visual content and the second audio-visual content, the first audio-visual content and the second audio-visual content are transmitted to the second processor; and after the second processor obtains the first audio-visual content and the second audio-visual content, it executes a screen segmentation and/or synthesis program according to the first audio-visual content and the second audio-visual content to generate a synthesized audio-visual content. 14. The system as described in claim 11 is characterized in that the second circuit board also includes a first audio and video output port and a second audio and video output port, and after the first processor obtains the first audio and video content and the second audio and video content, the first audio and video content and the second audio and video content are transmitted to the second processor, and the second processor transmits the first audio and video content or the second audio and video content to the first audio and video output port and/or the second audio and video output port. 15. The system as described in claim 10 is characterized in that the first circuit board also includes a first communication module, the first communication module is coupled to the first processor, the second communication module in the second circuit board supports a second wireless communication specification, the first communication module in the first circuit board supports a first wireless communication specification, and the second wireless communication specification is superior to the first wireless communication specification. 16. The system as claimed in claim 10, wherein the first circuit board does not support wireless communication function. 17. The system as described in claim 10 is characterized in that, after the first circuit board and the second circuit board are connected, there is a command channel and a data channel between the first circuit board and the second circuit board, the second circuit board also includes a first audio and video output port and a second audio and video output port, the first audio and video output port and the second audio and video output port are coupled to the second processor, the first circuit board also includes a third audio and video output port and a data output port, and the third audio and video output port and the data output port are coupled to the first processor. 18. The system as claimed in claim 10, characterized in that the first circuit board is a basic function board, the second circuit board is an expansion function board, and the clock frequency of the first processor is greater than the clock frequency of the second processor.