Communication function expansion device applied to desktop environment

Abstract

The utility model is suitable for the technical field of communication electronics, and provides a communication function expansion device applied to a desktop environment, which comprises an audio and video expansion branch circuit communicated with a communication module, and the audio and video expansion branch circuit comprises a display split screen circuit and an audio control circuit. The display split-screen circuit is used for converting one path of display data of the communication module into two paths of synchronous display output data, one path of display output is connected with the local touch display screen, and the other path of display output is connected with the local projection module; the audio control circuit carries out audio channel control by detecting the state of the handle state switch, and the embodiment of the utility model provides a communication module which supports quick call starting and quick switching between a handle mode and a hand-free mode in the call process when a plurality of display output ends are used in a desktop environment. And the use requirements of multiple scenes are met.

Description

Technical Field

[0001] This utility model belongs to the field of communication electronics technology, and in particular relates to a communication function expansion device applied in a desktop environment. Background Technology

[0002] Currently, mobile phones and IP phones based on modern communication technologies have become necessities for the general public. Various applications based on mobile phones or IP phones, such as WeChat meetings and PPT presentations, are increasingly used in work scenarios, especially in environments with multiple participants. However, existing technologies have two main shortcomings:

[0003] (1) In scenarios where the host and participants need to use multiple display terminals with different perspectives, most mobile phones or IP phones and other communication terminal products only have a single display interface and USB-C port. If an adapter is used to connect to an external projector, the port will be occupied, resulting in the inability to charge and thus a short usage time.

[0004] (2) Communication terminal products such as mobile phones and IP phones connected to the projector often need to make temporary voice calls and switch call modes in the context of a multi-person conference. Existing products and technologies are cumbersome to operate. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a communication function expansion device for desktop environments, aiming to solve the problems existing in the prior art mentioned in the background art.

[0006] This utility model embodiment is implemented as follows: a communication function expansion device applied in a desktop environment, the device includes an audio and video expansion branch circuit that communicates with a communication module, wherein the audio and video expansion branch circuit includes a screen splitting circuit, the screen splitting circuit is used to convert one display input data of the communication module into two identical display output data, one of which is connected to a local touch screen, and the other is connected to a local projection module.

[0007] The audio and video extension circuit also includes a handle status switch, an uplink audio switching switch, a downlink audio device including a hands-free speaker and a handle earpiece, and an uplink audio device including a handle microphone and a hands-free microphone. The hands-free speaker and the handle earpiece are respectively connected to the downlink audio interface of the communication module. The input terminal of the uplink audio switching switch is connected to the handle microphone and the hands-free microphone, and the output terminal is connected to the uplink audio interface of the communication module.

[0008] Preferably, the communication module is provided with at least one of a cellular network transceiver, a WIFI network transceiver, and an Ethernet controller, and the communication module is also provided with a video input interface connected to a local camera.

[0009] More preferably, it also includes a USB-C data expansion branch circuit that communicates with the communication module, the USB-C data expansion branch circuit being provided with a DC power input interface, a USB OTG interface, an HDMI interface and an RJ45 interface.

[0010] More preferably, it also includes a desktop control microprocessor, which is connected to the local button group via an I / O port and to the communication module via a USB-C data expansion branch circuit. This microprocessor controls the local projection module, including at least switching, forward and reverse focus adjustment, and keystone correction. The desktop control microprocessor is also connected to the handle status switch and the uplink audio switch via an I / O port. It determines the call mode by detecting the handle status switch, controls the uplink audio switch to select either the handle microphone or the hands-free microphone as the uplink audio channel, and further transmits call mode information to the communication module to select either the handle earpiece or the hands-free speaker as the downlink audio channel, thus enabling switching between handle mode and hands-free mode for voice calls.

[0011] More preferably, the communication module is connected to the local button group via an I / O port for controlling the local projection module, including at least switching, forward and reverse focus adjustment, and keystone correction; the desktop control microprocessor is connected to the handle status switch and the uplink audio switch via an I / O port, determines the call mode by detecting the handle status switch, controls the uplink audio switch to select the handle microphone or hands-free microphone as the uplink audio channel, and further selects the handle earpiece or hands-free speaker as the downlink audio channel, thereby realizing the switching of call voice between handle mode and hands-free mode.

[0012] The beneficial effects of this utility model embodiment are as follows: it provides various applications of the communication module when used in a desktop environment, enables multiple display terminals to output video for communication applications, allows for quick use of voice calls, and enables quick and convenient switching between handset call mode and hands-free call mode during a call. Attached Figure Description

[0013] Figure 1 A system block diagram of a communication function expansion device applied in a desktop environment, provided in the first embodiment of this utility model;

[0014] Figure 2 A system block diagram of a communication function expansion device applied in a desktop environment, provided in the second embodiment of this utility model;

[0015] Figure 3 The circuit diagram of the split-screen circuit provided in the embodiment of this utility model;

[0016] Figure 4 A circuit diagram of the handle status switch included in the audio and video extension circuit provided in this embodiment of the utility model;

[0017] Figure 5 A circuit diagram of the uplink audio section of the audio / video extension branch circuit provided in this embodiment of the utility model;

[0018] Figure 6 A circuit diagram of the downlink audio section of the audio / video extension branch circuit provided in this embodiment of the utility model;

[0019] Figure 7 The circuit schematic diagram of the desktop control microprocessor provided in the first embodiment of this utility model;

[0020] Figure 8 The schematic diagram of the button expansion circuit provided in the first embodiment of this utility model.

[0021] In the diagram: 100 - Communication module, 200 - Audio and video expansion circuit, 300 - Desktop control microprocessor, 400 - USB-C data expansion circuit, 500 - Local button group, 600 - Local projection module, 700 - Local camera, 800 - Local touch display. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0024] like Figure 1 As shown, in the first embodiment of this utility model, a communication function expansion device for desktop environment is proposed. The device includes an audio and video expansion branch circuit 200 that communicates with the communication module 100. The audio and video expansion branch circuit 200 includes a screen splitting circuit. The screen splitting circuit is used to convert one display data of the communication module 100 into two synchronous display output data. One display output is connected to the local touch screen 800, and the other display output is connected to the local projection module 600.

[0025] like Figure 1 As shown, in a preferred embodiment of this utility model, the communication module 100 uses a cellular communication module based on the Unisoc UMS9230E chipset from Lanshuo Company, provides a MIPI CSI display interface, provides a USB-C interface, and the communication module 100 is also provided with a video input interface (i.e., the function implemented by the MIPI CSI interface) connected to the local camera 700.

[0026] like Figure 1 As shown, in a preferred embodiment of the present invention, the device further includes a USB-C data expansion branch circuit 400 that communicates with the communication module 100. The USB-C data expansion branch circuit 400 is provided with a DC power interface, a USBOTG interface, an HDMI interface and an RJ45 interface.

[0027] In the first embodiment of this utility model, the audio / video extension branch circuit 200 includes a MIPI SPLITTER split-screen circuit, and the LT9211 from Longxun Semiconductor is selected as the split-screen circuit controller. Figure 3 As shown, the MIPIDSI display input data of the communication module 100 is converted into two synchronous MIPIDSI display output data. The communication module 100 enables the split-screen circuit controller by controlling the first pin VDDO power supply pin and the 49th-52nd pin IIC signal pins of the split-screen circuit controller chip.

[0028] like Figure 1 As shown, the audio / video extension circuit 200 also includes a handle status switch, an uplink audio switching switch, a downlink audio device including a hands-free speaker and a handle earpiece, and an uplink audio device including a handle microphone and a hands-free microphone. The hands-free speaker is connected to the downlink audio speaker interface of the communication module 100, the handle earpiece is connected to the downlink audio receiver interface of the communication module 100, the input terminal of the uplink audio switching switch is connected to the handle microphone and the hands-free microphone, and the output terminal is connected to the uplink audio interface MIC of the communication module 100.

[0029] like Figure 4 As shown, the audio and video expansion circuit 200 also includes a handle status switch J1, which is a FEILIMEN model KW-45B-B1. The lifting or lowering state of the handle generates an IO interrupt through the INT_HOOK pin.

[0030] like Figure 5 and Figure 6As shown, the audio / video expansion branch circuit 200 also includes an uplink audio switching switch U5, which uses an analog signal switch SGM3718 from Sanbang Microelectronics Co., Ltd., and switches the audio channels through pin 4 MIC_SW. The uplink audio device, the handset microphone, is connected to the circuit input terminal via pads T1 and T3, and the uplink audio device, the hands-free microphone, is connected to the circuit input terminal via pads T2 and T4. The uplink audio circuit output terminals MIC-P and MIC-N are connected to the uplink audio interface MIC of the communication module 100. The audio / video expansion branch circuit 200 also includes a downlink audio device, a handset earpiece and a hands-free speaker. The handset earpiece is connected to the downlink audio receiver interface of the communication module 100 via pads T8 and T10, and the hands-free speaker is connected to the downlink audio speaker interface of the communication module 100 via pads T5 and T6. Figure 7 As shown, the first embodiment of this utility model also includes a desktop control microprocessor 300, which is a JL7012A microprocessor from JL Technology. It is connected to the communication module 100 via the USB-C data expansion branch circuit 400 through pins 2, 5, 25, and 26, and serves as an OTG slave device of the communication module 100 to realize USB communication. Pin 46 is connected to the INT_HOOK pin of the handle status switch J1. Pin 47 is connected to the MIC_SW pin of the uplink audio switch U5. A button interrupt I / O port with pins 8-13 is also provided to connect to physical buttons.

[0031] like Figure 8 As shown, the preferred method is to use the TI IO expansion chip TCA9555 to form the button expansion circuit U7. Any pin of the desktop control microprocessor 300 from pin 8 to pin 13 is connected to the INT input pin of the button expansion circuit U7, which enables the desktop control microprocessor 300 to control a larger number of buttons.

[0032] like Figure 3 , Figure 7 and Figure 8 As shown, in the first embodiment of this utility model, when the user presses the button SW9 to turn on the projection during actual application, the corresponding button interrupt is received by the desktop control microprocessor 300 via the first pin INT of the button expansion circuit U7, which is then received by the 44th pin INT_1 of the desktop control microprocessor 300. Further, the desktop control microprocessor 300 receives the button command via USB data output from pins 2, 5, 25, and 26 through the audio and video expansion branch circuit 200 to the USB C interface of the communication module 100. The communication module 100 enables the split-screen circuit controller through the first pin VDDO power pin and the 49-52 pins IIC signal pins of the split-screen controller, so as to realize the synchronous output of the display data of the communication module 100 on the local touch screen 800 and the local projection module 600.

[0033] like Figure 4 , Figure 5 and Figure 7 As shown, in the first embodiment of this utility model, during a voice call in practical application, when the telephone handset is in the down position and the call button SW10 is pressed directly, pin 46 of the desktop control microprocessor 300 detects that the INT_HOOK pin of the handset status switch J1 is in a high-level state. Furthermore, pin 47 of the desktop control microprocessor 300 outputs a high-level MIC_SW to pin 4 MIC_SW of the uplink audio switching switch U5, controlling T2 and T4 of the uplink audio switching switch U5 to take effect, connecting the hands-free microphone to the uplink audio MIC interface of the communication module 100; furthermore, the desktop control microprocessor 300 receives the call status information of the hands-free mode from pins 2, 5, 25, and 26 through the audio and video expansion branch circuit 200 to the USB C interface of the communication module 100, enabling the downlink audio interface Speaker, and the downlink audio device hands-free speaker takes effect, realizing the hands-free mode of the call.

[0034] like Figure 4 , Figure 6 and Figure 7 As shown, when the call button SW10 is pressed, if the handset is in the lifted state, pin 46 of the desktop control microprocessor 300 detects that the INT_HOOK pin of the handset status switch J1 is in a low-level state. Furthermore, pin 47 of the desktop control microprocessor 300 outputs a low-level MIC_SW to pin 4 of the uplink audio switch U5, controlling T1 and T3 of the uplink audio switch U5 to take effect, connecting the handset microphone to the uplink audio MIC interface of the communication module 100. Further, the desktop control microprocessor 300 receives the call status information of the handset mode from pins 2, 5, 25, and 26 via the audio / video extension branch circuit 200 to the communication module 100, enabling the downlink audio interface Receiver, and activating the downlink audio device handset earpiece, thus realizing the handset mode for voice calls.

[0035] like Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, in the first embodiment of this utility model, when using the handset mode for voice calls in practical applications, the user presses the hands-free function key SW12. The desktop control microprocessor 300 outputs a high level from pin 47 MIC_SW to pin 4 MIC_SW of the uplink audio switching switch U5, controlling T2 and T4 of the uplink audio switching switch U5 to take effect, connecting the hands-free microphone to the uplink audio MIC interface of the communication module 100. Further, the desktop control microprocessor 300 receives the call status information of the hands-free mode from pins 2, 5, 25, and 26 through the audio and video expansion branch circuit 200 to the USB C interface of the communication module 100, enabling the downlink audio interface Speaker, and the downlink audio device hands-free speaker takes effect, realizing the switching of the call voice from handset mode to hands-free mode.

[0036] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in the first embodiment of this utility model, when using hands-free mode for voice calls in practical applications, the user lifts the handle, and the low-level interruption of the INT_HOOK pin of the handle status switch J1 is recognized by pin 46 of the desktop control microprocessor 300. Furthermore, pin 47 of the desktop control microprocessor 300 outputs a low level to pin 4 of the uplink audio switching switch U5 (MIC_SW), controlling T1 and T3 of the uplink audio switching switch U5 to take effect, connecting the handle microphone to the uplink audio MIC interface of the communication module 100. Further, the desktop control microprocessor 300 receives the call status information of the handle mode from pins 2, 5, 25, and 26 via the audio / video extension branch circuit 200 to the communication module 100, enabling the downlink audio interface Receiver, and activating the downlink audio device, the handle earpiece, thus switching the call voice from hands-free mode to handle mode.

[0037] In the technical solution of the first embodiment of this utility model, when the user is in a multi-screen display state, there is no need to operate the local touch screen 800 connected to the communication module 100 to exit the current shared display application interface and enter the dialing or answering interface. The user can initiate or answer a voice call through the buttons or handle connected to the desktop control microprocessor 300, and can quickly switch between handle mode and voice mode.

[0038] like Figure 2As shown, in a preferred second embodiment of this utility model, for communication products requiring fewer buttons, the communication module 100 is directly connected to the local button group 500 via its internal I / O ports to control the local projection module 600, including at least switching, forward and reverse focus adjustment, and keystone correction; the communication module 100 is also directly connected to the INT_HOOK pin of the handle status switch J1 and the MIC_SW pin of the uplink audio switch U5 via its internal I / O ports.

[0039] like Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, in the second embodiment of this utility model, when the user presses the button SW9 to turn on the projection during actual projection playback, the corresponding button interruption is directly detected by the communication module 100. The communication module 100 enables the split-screen circuit controller through the first pin VDDO power pin and the 49th-52nd pin IIC signal pins of the split-screen controller, so as to realize the synchronous output of the display data of the communication module 100 on the local touch screen 800 and the local projection module 600.

[0040] like Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, in the second embodiment of this utility model, during a voice call in practical application, when the telephone handset is in the down position and the call button SW10 is pressed directly, the communication module 100 detects that the INT_HOOK pin of the handset status switch J1 is in a high-level state. Furthermore, the communication module 100 outputs a high level to pin 4 MIC_SW of the uplink audio switching switch U5, controlling T2 and T4 of the uplink audio switching switch U5 to take effect, connecting the hands-free microphone to the uplink audio MIC interface of the communication module 100; furthermore, the communication module 100 enables the downlink audio interface Speaker, and the downlink audio device hands-free speaker takes effect, realizing the hands-free mode of the call voice.

[0041] like Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, when the call button SW10 is pressed, if the telephone handset is in the lifted state, the communication module 100 detects that the INT_HOOK pin of the handset status switch J1 is in a low-level state. Furthermore, the communication module 100 outputs a low level to pin 4 MIC_SW of the uplink audio switch U5, controlling T1 and T3 of the uplink audio switch U5 to take effect, connecting the handset microphone to the uplink audio MIC interface of the communication module 100; furthermore, the communication module 100 enables the downlink audio interface Receiver, and the downlink audio device handset earpiece takes effect, realizing the handset mode for voice calls.

[0042] The difference between the second embodiment and the first embodiment of this utility model is that, given a sufficient number of IO pins, the desktop control microprocessor 300 is eliminated in the circuit design of the communication module 100, so as to achieve the same function with a more streamlined design. That is, in actual application, the local projection module 600 is turned on or off, and the focus is adjusted forward or backward, and the keystone correction is controlled by the local button group 500. The handset status switch J1 is detected to set and change the handset or handset mode of the call voice.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A communication function expansion device for desktop environments, characterized in that, The device includes an audio / video extension branch circuit (200) connected to the communication module (100), wherein the audio / video extension branch circuit (200) includes a screen splitting circuit, which is used to convert one display data of the communication module (100) into two identical display output data, one of which is connected to a local touch screen (800) and the other is connected to a local projection module (600). The screen splitting circuit is powered by the communication module (100) and is connected to and controlled by the communication module (100) via the IIC bus.

2. The communication function expansion device applied in a desktop environment according to claim 1, characterized in that, The audio and video expansion branch circuit (200) also includes a handle status switch, an uplink audio switching switch, a downlink audio device including a hands-free speaker and a handle earpiece, and an uplink audio device including a handle microphone and a hands-free microphone. The hands-free speaker and the handle earpiece are respectively connected to the corresponding downlink audio interfaces of the communication module (100) to form the downlink audio channel of the audio and video expansion branch circuit (200). The input end of the uplink audio switching switch is connected to the handle microphone and the hands-free microphone, and the output end is connected to the uplink audio interface of the communication module (100) to form the uplink audio channel of the audio and video expansion branch circuit (200).

3. The communication function expansion device applied in a desktop environment according to claim 1, characterized in that, The communication module (100) is provided with at least one of a cellular network transceiver, a WIFI network transceiver and an Ethernet controller, and the communication module (100) is also provided with a video input interface connected to a local camera (700).

4. The communication function expansion device applied in a desktop environment according to claim 2, characterized in that, It also includes a USB-C data expansion branch circuit (400) connected to the communication module (100), the USB-C data expansion branch circuit (400) having a DC power input interface, a USB OTG interface, an HDMI interface and an RJ45 interface.

5. The communication function expansion device applied in a desktop environment according to claim 4, characterized in that, It also includes a desktop control microprocessor (300), which is connected to the local button group (500) via an IO port and to the communication module (100) via a USB-C data extension branch circuit (400), and is used to control the local projection module (600) including at least switching, forward and reverse focus adjustment and keystone correction.

6. The communication function expansion device applied in a desktop environment according to claim 5, characterized in that, The desktop control microprocessor (300) is connected to the handle status switch and the uplink audio switching switch via the IO port. It detects the handle status switch, controls the uplink audio switching switch to select the handle microphone or hands-free microphone as the uplink audio channel, and connects to the communication module (100) via the USB-C data expansion branch circuit (400). The communication module (100) selects the handle earpiece or hands-free speaker as the downlink audio channel, thereby realizing the switching of call voice between handle mode and hands-free mode.

7. The communication function expansion device applied in a desktop environment according to claim 2, characterized in that, The communication module (100) is connected to the local button group (500) via an IO port for controlling the local projection module (600) with at least the functions of switching, adjusting the forward and reverse focus and keystone correction; it is also connected to the handle status switch and the uplink audio switch via the IO port to detect the handle status switch and control the uplink audio switch to select the handle microphone or hands-free microphone as the uplink audio channel and select the handle earpiece or hands-free speaker as the downlink audio channel.

Images