CN111447332B - Scheduling terminal mainboard and scheduling terminal - Google Patents
Scheduling terminal mainboard and scheduling terminal Download PDFInfo
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- CN111447332B CN111447332B CN202010102611.2A CN202010102611A CN111447332B CN 111447332 B CN111447332 B CN 111447332B CN 202010102611 A CN202010102611 A CN 202010102611A CN 111447332 B CN111447332 B CN 111447332B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
- H04M7/0066—Details of access arrangements to the networks
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Abstract
The invention discloses a scheduling terminal mainboard.A micro control unit sends a first control signal to a switching circuit when an audio and video processing board is connected with an external power supply and an external network, and the switching circuit connects a minimum system with a voice unit so that the minimum system is used for processing audio information received by the voice unit; when the audio and video processing board is not connected with an external power supply or an external network, the micro control unit sends a second control signal to the switching circuit, and the switching circuit connects the voice chip with the voice unit so that the voice chip is used for processing the audio information received by the voice unit. The embodiment of the invention also provides a dispatching terminal, and by adopting the embodiment of the invention, when the network of the dispatching terminal is abnormal or the power supply is abnormal, the dispatching terminal is automatically switched to the PSTN function for voice communication, thereby ensuring the continuity of dispatching work and improving the use experience of users.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a scheduling terminal mainboard and a scheduling terminal.
Background
The dispatch terminal is a terminal system for implementing voice communication and video communication, and is widely applied to conference communication in various office places. In the prior art, an existing dispatch terminal is usually connected to an external power source through a power interface to supply power, and is connected to an ethernet, a WiFi wireless network or a bluetooth module through a network interface to implement a communication function.
However, in the process of implementing the invention, the inventor finds that the prior art has at least the following problems: because most of the existing scheduling terminals need to be always powered by a power supply and need to be accessed to a network to realize a communication function, when the scheduling terminals have network abnormality or power supply abnormality in the using process, the scheduling terminals cannot be used normally, continuous scheduling work cannot be ensured, and the use experience of users is seriously influenced.
Disclosure of Invention
The embodiment of the invention aims to provide a scheduling terminal mainboard and a scheduling terminal, which can automatically switch to a PSTN function for voice communication when a network of the scheduling terminal is abnormal or power supply is abnormal, so that the continuity of scheduling work is ensured, and the use experience of a user is improved.
In order to achieve the above object, an embodiment of the present invention provides a scheduling terminal motherboard, including: the audio and video processing board and the PSTN board; the audio and video processing board is connected with the PSTN board;
the audio and video processing board comprises a minimum system; the PSTN board comprises a micro control unit, a voice chip, a switching circuit and a voice unit; the minimum system and the voice chip are both connected with the voice unit through the switching circuit, and the on-off state is switched through the switching circuit;
the minimum system is connected with the micro control unit to carry out information interaction; the micro control unit is connected with the switching circuit and used for sending a control signal to control the switching circuit to switch between the minimum system and the voice chip;
when the audio and video processing board is connected with an external power supply and an external network, the micro control unit sends a first control signal to the switching circuit, and the switching circuit connects the minimum system with the voice unit so that the minimum system is used for processing audio information received by the voice unit;
when the audio and video processing board is not connected with an external power supply or an external network, the micro control unit sends a second control signal to the switching circuit, and the switching circuit connects the voice chip with the voice unit so that the voice chip is used for processing the audio information received by the voice unit.
As an improvement of the above scheme, the PSTN board further comprises a PSTN interface; the PSTN interface is used to connect to a PBX switch.
As an improvement of the above scheme, the PSTN board further comprises an internal power supply unit;
when the audio and video processing board is not connected with an external power supply or an external network and the PSTN interface is connected with the PBX switch, the internal power supply unit supplies power to the voice chip.
As an improvement of the above scheme, the audio/video processing board further comprises a video unit, and the video unit is connected with the minimum system;
when the audio and video processing board is connected with an external power supply and an external network, the minimum system is used for processing the video information received by the video unit.
As an improvement of the above scheme, the minimum system is configured to process video information received by the video unit, and specifically includes:
and the minimum system compresses, splices, encodes and transmits at least one path of video information received by the video unit.
As an improvement of the above scheme, the video unit comprises a display screen interface, a camera interface, a touch screen interface and a key interface under the screen; the voice unit includes a microphone unit, a speaker unit, and a handle interface.
As an improvement of the above scheme, the audio/video processing board further comprises a local area network input interface and a local area network output interface;
the local area network input interface is used for connecting a POE power supply end, supplying power to the audio and video processing board and the PSTN board and accessing the network;
the local area network output interface is used for extending and expanding a network port.
As an improvement of the above scheme, the audio/video processing board further comprises a power interface and a wireless unit;
the power interface is used for connecting an external adapter and supplying power to the audio and video processing board and the PSTN board; the wireless unit is used for connecting a wireless network or Bluetooth equipment.
As an improvement of the above scheme, the scheduling terminal main board further comprises a key board; the key board is connected with the PSTN board; the key board comprises a number key unit and a function key unit;
the digital key unit is connected with the micro control unit of the PSTN board; the digital key unit is also connected with the minimum system of the audio and video processing board through the PSTN board;
the function key unit is connected with the minimum system through the PSTN board.
The embodiment of the present invention further provides a scheduling terminal, including: a touch display screen, a handle and the dispatch terminal motherboard of any of claims 1-9; the touch display screen comprises a display unit, a camera, a touch unit and a screen lower key;
the touch display screen is connected with the video unit of the audio and video processing board; the handle is connected with the handle interface of the PSTN board.
Compared with the prior art, the scheduling terminal mainboard and the scheduling terminal disclosed by the invention have the advantages that an audio and video processing board and a PSTN board are provided, and the audio and video processing board comprises a minimum system; the PSTN board comprises a micro control unit, a voice chip, a switching circuit and a voice unit; the minimum system and the voice chip are connected with the voice unit through the switching circuit, and the on-off state is switched through the switching circuit. When the audio and video processing board is connected with an external power supply and an external network, the micro control unit controls the switching circuit, and the switching circuit establishes connection between the minimum system and the voice unit so that the minimum system is used for processing audio information received by the voice unit; when the audio and video processing board is not connected with an external power supply or an external network, the micro control unit controls the switching circuit to establish the connection between the voice chip and the voice unit so that the voice chip is used for processing the audio information received by the voice unit and is powered by an internal power supply unit of the PSTN board. When the network of the dispatching terminal is abnormal or the power supply is abnormal, the invention automatically switches to the PSTN function to carry out voice communication, thereby ensuring the continuity of dispatching work and improving the use experience of users. In addition, minimum system still is used for compressing, concatenation, coding and transmission processing to at least one way video information of receiving when the video conference, need not additionally be equipped with MCU equipment, and through connecting POE power supply net twine in order to realize power supply and network connection, has optimized equipment wiring effectively, has reduced the network deployment complexity, practices thrift the cost.
Drawings
Fig. 1 is a schematic structural diagram of a scheduling terminal motherboard according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a scheduling terminal motherboard according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a preferred scheduling terminal motherboard according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of another scheduling terminal motherboard according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a scheduling terminal according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a scheduling terminal according to a fourth embodiment of the present invention after assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a scheduling terminal motherboard according to an embodiment of the present invention. The scheduling terminal main board 100 provided by the first embodiment of the present invention is installed in a scheduling terminal, where the scheduling terminal main board 100 includes: an audio and video processing board 110 and a PSTN board 120. The audio and video processing board 110 is provided with an extension interface 130a, the PSTN board 120 is provided with an extension interface 130b, and the audio and video processing board 110 is connected with the PSTN board 120 through the extension interface 130.
The audio-video processing board 110 includes a minimum system 111; the PSTN board 120 includes a micro control unit 121, a voice chip 122, a switching circuit 123 and a voice unit 124; the minimum system 111 and the voice chip 122 are both connected to the voice unit 124 through the switching circuit 123, and the on/off state is switched through the switching circuit 123. The minimum system 111 is connected with the micro control unit 121 for information interaction; the micro control unit 121 is connected to the switching circuit 123, and is configured to send a control signal to control the switching circuit 123 to switch between the minimum system 111 and the voice chip 122.
When the audio/video processing board 110 is connected to an external power supply and an external network, the micro control unit 121 sends a first control signal to the switching circuit 123, and the switching circuit 123 connects the minimum system 111 and the voice unit 124, so that the minimum system 111 is used for processing the audio information received by the voice unit 124;
when the audio/video processing board 110 is not connected to an external power supply or an external network, the micro control unit 121 sends a second control signal to the switching circuit 123, and the switching circuit 123 connects the voice chip 122 and the voice unit 124, so that the voice chip 122 is used for processing the audio information received by the voice unit 124.
In a preferred embodiment, the PSTN board 120 further includes a PSTN interface 125; the PSTN interface 125 is used to connect PBX switches. The PSTN board 120 further includes an internal power supply unit 126; when the audio/video processing board 110 is not connected to an external power source or an external network and the PSTN interface 125 is connected to a PBX switch, the voice chip 122 is connected to the voice unit 124, and the internal power supply unit 126 supplies power to the voice chip 122.
In the embodiment of the present invention, the unit modules respectively disposed on the audio/video processing board 110 and the PSTN board 120 implement information interaction and data transmission through the extension interface 130. In one embodiment, when the audio/video processing board 110 is connected to an external power source and an external network, the minimum system 111 and the micro control unit 121 maintain information interaction, and the micro control unit 121 sends a first control signal to control the switching circuit 123 to establish a connection between the minimum system 111 and the voice unit 124. When an incoming call is answered, the audio information is transmitted to the minimum system 111 through the network, and the minimum system 111 analyzes and processes the received audio information, converts the audio information into analog sound, and sends the analog sound to the voice unit 124 for playing. When an outgoing call is made, the voice unit 124 picks up local sound and transmits the local sound to the minimum system 111, so that the minimum system converts the local sound into a digital signal, packages the digital signal, and sends the digital signal to an answering party through a network, so that the dispatching terminal realizes a voice communication function.
In another embodiment, when the audio/video processing board 110 is not connected to an external power source or an external network, that is, when a scheduling terminal has a power supply abnormality or a network abnormality, the minimum system 111 is in a power-down state, and cannot perform a normal information interaction and communication function. At this time, if the micro control unit 121 cannot receive the interaction information of the minimum system, a second control signal is sent to control the switching circuit 123 to establish the connection between the voice chip 122 and the voice unit 124, the PSTN interface is connected to the PBX switch, and the internal power supply unit 126 supplies power to the voice chip 122. When the voice chip 122 receives an incoming call from the PBX switch, audio information is transmitted to the voice chip 122 through the PSTN interface 125, and the voice chip 122 decodes the received audio information, converts the decoded audio information into analog sound, and transmits the analog sound to the voice unit 124 for playback. When an outgoing call is made, the micro control unit 121 converts an input telephone number into a DTMF tone, and transmits the DTMF tone to the voice chip 122, so that the voice chip sends the DTMF tone to a remote PBX switch for calling, so that the dispatch terminal realizes a voice communication function.
The embodiment of the invention provides a scheduling terminal mainboard, which comprises an audio and video processing board and a PSTN board, wherein the audio and video processing board comprises a minimum system; the PSTN board comprises a micro control unit, a voice chip, a switching circuit and a voice unit; the minimum system and the voice chip are connected with the voice unit through the switching circuit, and the on-off state is switched through the switching circuit. When the audio and video processing board is connected with an external power supply and an external network, the micro control unit controls the switching circuit, and the switching circuit establishes connection between the minimum system and the voice unit so that the minimum system is used for processing audio information received by the voice unit; when the audio and video processing board is not connected with an external power supply or an external network, the micro control unit controls the switching circuit to establish the connection between the voice chip and the voice unit so that the voice chip is used for processing the audio information received by the voice unit and is powered by an internal power supply unit of the PSTN board. When the network of the dispatching terminal is abnormal or the power supply is abnormal, the invention automatically switches to the PSTN function to carry out voice communication, thereby ensuring the continuity of dispatching work and improving the use experience of users.
Fig. 2 is a schematic structural diagram of a scheduling terminal motherboard according to a second embodiment of the present invention. On the basis of the first embodiment, the audio/video processing board 110 further includes a video unit 112, and the video unit 112 is connected to the minimum system 111. When the audio/video processing board 110 is connected to an external power source and an external network, the minimum system 111 is configured to process the video information received by the video unit 112.
As a preferred embodiment, the minimum system 111 is configured to process the video information received by the video unit 112, specifically: the minimum system 111 compresses, splices, encodes, and transmits at least one path of video information received by the video unit 112.
In the embodiment of the present invention, when the audio/video processing board 110 is connected to an external power supply and an external network, the scheduling terminal may further implement a video communication function. When receiving an incoming video call, the minimum system analyzes and processes the received video information of the opposite side, and transmits the video information to the video unit 112, and displays the video information through a display screen. Meanwhile, the video unit 112 transmits the collected local video information to the minimum system 111, and the minimum system 111 performs compression coding processing on the video information and transmits the processed video to a display screen of the other party through a network, so that the scheduling terminal realizes video communication.
When the scheduling terminal is in a video conference mode, that is, when the scheduling terminal performs video communication with a plurality of conference members, the minimum system 111 starts a self-contained MCU function, analyzes and processes received video information of the plurality of parties, performs scaling and splicing synthesis on the local video information acquired by the video unit 112, compresses and encodes the synthesized video, transmits the compressed and encoded video to display screens of the conference members of the plurality of parties through a network, transmits the video to the video unit 112, and displays the video on the display screens.
The existing dispatching terminal continues the voice communication of the program control exchanger era, the bandwidth is limited, most of the dispatching terminals are only based on the voice communication, and the functions are simple. Even if the video communication function is provided, peripheral MCU equipment needs to be additionally matched, the connection is complex, the occupied space is large, and the cost is high. In the embodiment of the invention, the minimum system can be used for compressing, splicing, coding and transmitting at least one path of received video information during a video conference, so as to realize video communication, even video conference communication. The number of members joining the video conference is determined by the processing performance of the minimum system, and is at least not lower than 4 conference members. The video conference communication can be realized without additionally arranging MCU equipment, the equipment wiring is effectively optimized, the networking complexity is reduced, and the cost is saved.
IN a preferred embodiment, the audio/video processing board 110 further includes a local area network input interface LAN IN and a local area network output interface LAN OUT; the LAN input interface LAN IN is used to connect a POE power supply terminal, supply power to the audio/video processing board 110 and the PSTN board 120, and access the network; the local area network output interface LAN OUT is used for extending and expanding a network port. Further, the audio/video processing board 110 further includes a SWTICH unit 113.
Specifically, through the LAN input interface LAN IN, the POE power supply terminal supplies power to the audio/video processing board 110, and meanwhile, the audio/video processing board 110 supplies an EXT _5V power to the PSTN board 120 through the expansion interface 130.
When the ethernet is accessed through the LAN input interface LAN IN, exchanged through the switch unit 113 inside the audio/video processing board 110, and then output through the LAN output interface LAN OUT, a network port is extended, for example, for connecting a PC.
IN the embodiment of the invention, the power supply and the network connection can be realized by connecting the local area network input interface LAN IN with the POE network cable, so that the dispatching terminal can normally work, the equipment wiring is effectively optimized, the networking complexity is reduced, and the cost is saved.
In another preferred embodiment, the av processing board 110 further includes a power interface 114 and a wireless unit 115. The power interface 114 is used for connecting an external adapter and supplying power to the audio and video processing board and the PSTN board; the wireless unit 115 is used for connecting a wireless network or a bluetooth device.
Specifically, the audio/video processing board 110 may be connected to an external adapter through the power interface 114, and the external adapter provides 12V voltage for direct power supply, and the voltage is converted into the voltage required by the relevant circuit through a power conversion circuit in the board for power supply. At this time, the wireless unit of the audio/video processing board 110 may be connected to an external routing device or bluetooth device, access to a network in a wireless WiFi manner, specify a route and a port, and register on a specified IMS or a soft switch server, thereby implementing a voice and video communication function.
Fig. 3 is a schematic structural diagram of a preferred scheduling terminal motherboard according to a second embodiment of the present invention.
In a preferred embodiment, the video unit 112 includes a display screen interface 1121, a camera interface 1122, a touch screen interface 1123, and an off-screen button interface 1124. The display screen interface 1121, the camera interface 1122, the touch screen interface 1123, and the off-screen key interface 1124 are respectively connected to the minimum system 111. The display screen interface 1121 and the touch screen interface 1123 are also used for connecting a touch display screen. When the scheduling terminal performs a video communication function, the touch display screen establishes a connection with the minimum system 111 through the display screen interface 1121, and is driven by the minimum system 111 to display, so as to display video information processed by the minimum system 111; meanwhile, the touch display screen is further configured to implement a touch operation of a user, and transmit a signal input by a touch of the user to the minimum system 111 for analysis and processing to implement a related function. The camera interface 1122 is used to connect a camera in a touch display screen, so that the camera collects video or image information and transmits the video or image information to the minimum system 111 to perform processing operations such as compression and encoding. The screen lower key interface 1124 is connected to a screen lower key of the touch display screen, and the screen lower key is used for realizing the return and menu switching functions of the touch display screen.
Further, the voice unit 124 includes a microphone unit 1241, a speaker unit 1242, and a handle interface 1243. The switching circuit 123 includes a first switch, a second switch, and a third switch. Each of the switches is a single-pole double-throw switch, and is respectively and correspondingly connected to the microphone unit 1241, the speaker unit 1242 and the handle interface 1243, and is configured to respectively control the microphone unit 1241, the speaker unit 1242 and the handle interface 1243 to establish connection with the minimum system 111 or establish connection with the voice chip 122. When the dispatching terminal realizes the voice communication function, if a hands-free mode is selected, the connection between the microphone unit 1241 and the speaker unit 1242 and the minimum system or the voice chip is established at the same time, the microphone unit 1241 performs the pickup function of local sound, and the speaker unit 1242 performs the playback function of far-end sound. If the handle mode is selected, the connection between the handle interface 1243 and the minimum system or the voice chip is established, and the handle is connected through the handle interface 1243 to realize the sound pickup and playback of voice communication. The switching between the handsfree mode and the grip mode is also controlled by the switching circuit 123.
In this embodiment of the present invention, the audio/video processing board 110 further includes an input end line in and an output end line out. The input end line in is used for being connected with external equipment such as a sound box or a loudspeaker, and the output end line out is connected with external microphone equipment. When the voice communication function is carried out, sound collection can be realized by the input end line in, and sound playing can be realized by the output end line out.
In this embodiment of the present invention, the audio/video processing board 110 further includes a sound card unit 116, and the minimum system 111 establishes connection with the voice unit 124, the input end line in, and the output end line out through the sound card unit 116. The voice unit 124 transmits the collected sound to the minimum system 111 through the sound card unit 116, and also receives the audio information of the minimum system through the sound card unit 116; the input end line in transmits the collected sound to the minimum system 111 through the sound card unit 116, and the output end line out receives the audio information of the minimum system through the sound card unit 116.
The sound card unit 116 functions as: converting the sound collected by the voice unit or the input end line in into a digital signal, and transmitting the digital signal to the minimum system 111 for processing and sending; or converting the audio information of the opposite party transmitted by the minimum system 111 into analog sound, and transmitting the analog sound to the voice unit or the output end line out for playing.
As a preferred embodiment, the audio/video processing board 110 further includes a power management unit PMIC, a screen projection interface HDMI, a USB interface, and a TF interface; the power management unit is used to convert the voltage input through the interface unit 114 into different voltages to supply power to the relevant circuits in the board. The screen projection interface HDMI is used for realizing screen projection display of the touch display screen. The USB interface is used for connecting USB equipment, and the TF interface is used for inserting a memory card. The PSTN board 120 further includes a buzzer for implementing a ringing bell when the PBX switch is used for voice communication.
In the embodiment of the invention, the functions of the scheduling terminal mainboard are richer and more comprehensive, the quality is better in the process of realizing voice communication and video communication, and the use experience of a user is effectively improved.
Fig. 4 is a schematic structural diagram of a scheduling terminal motherboard according to a third embodiment of the present invention. The third embodiment of the present invention is implemented on the basis of the second embodiment, and the scheduling terminal motherboard further includes a key board 140. The keypad 140 is provided with a key interface 150a, the PSTN board is provided with a key interface 150b, and the keypad 140 is connected to the PSTN board 120 through the key interface 150.
Further, the keypad 140 includes a number key unit 141 and a function key unit 142. The digital key unit is connected with the micro control unit of the PSTN board; the digital key unit is also connected with the minimum system of the audio and video processing board through the PSTN board; the function key unit is connected with the minimum system through the PSTN board.
Specifically, the numeric key unit 141 is used to implement input of numerals 0 to 9, english alphabets, a number, and a # number. Two groups of keys are arranged under each silica gel key of the number keys, the first group is connected to the PSTN board 120 through a cable and the key interface 150 and is connected to the micro control unit 121, the second group is connected to the PSTN board 120 through a cable and the key interface 150 and is connected to the I2C bus to be converted into common input, and the common input is connected back to the minimum system 111 of the audio and video processing board 110 through the expansion interface 130 through the I2C bus. The function key unit 142 is used to implement functions such as brightness adjustment of the touch display screen, volume adjustment of the voice unit, or incoming call answering, and then the minimum system 111 is received.
Fig. 5 to 6 are schematic structural diagrams of a scheduling terminal according to a fourth embodiment of the present invention. The fourth embodiment of the present invention is implemented on the basis of the third embodiment, and provides a scheduling terminal 200, including: the scheduling terminal comprises a touch display screen 210, a handle 220 and the scheduling terminal main board 100; the touch display screen 210 comprises a display unit 211, a camera 212, a touch unit 213 and a screen button 214;
the touch display screen 210 is connected with the video unit 112 of the audio/video processing board 110; the handle 220 is connected to a handle interface 1243 of the PSTN board 120.
Specifically, the display unit 211 is connected to the display interface 1121 through a cable, the camera 212 is connected to the camera interface 1122 through a cable, the touch unit 213 is connected to the touch screen interface 1123 through a cable, and the off-screen button 214 is connected to the off-screen button interface 1124 through a cable. Preferably, the touch display screen in the embodiment of the invention is a 10.1 inch screen, and can support 1280 × 800 display; the camera is a high-definition camera and at least supports 720P.
The dispatching terminal can be directly placed on an office desk, an integrated structure is adopted, wiring among the dispatching terminal, a camera, a touch display screen, a handle and other equipment is reduced, the size is light and simple, and the occupied space is small.
In the embodiment of the present invention, the scheduling terminal 200 includes an IP mode and a PBX mode. In the IP mode, the scheduling terminal 200 can implement three modes, i.e., incoming call answering, outgoing call calling, and video conference. In the PBX mode, the dispatch terminal 200 can implement two modes of incoming call answering and outgoing call.
In one embodiment, the IP mode refers to a mode in which a route and a port are set, a registration is made to an IMS (or soft switch) server through an ethernet, and a protocol and a media stream are IP-enabled. IN the IP mode, the audio/video processing board 110 is connected to an external power source and an external network, for example, the local area network input interface LAN IN is connected to a POE power supply terminal, so as to supply power to the audio/video processing board 110 and the PSTN board 120 and access the network; or the power supply interface 114 is connected with an external adapter for supplying power, and the network is accessed in a wireless WiFi mode. In the IP mode, the minimum system 111 performs information interaction with the micro control unit 121 through the extension interface 130 and a UART serial port, so that the micro control unit 121 controls the switching circuit 123 to establish the connection between the minimum system 111 and the voice unit 124.
Under the incoming call answering mode, video communication and voice communication can be realized. When the calling party has the video capability, video communication is adopted; when the calling party has only audio capability, then the negotiation is voice communication. When a call message passes through the LAN input interface LAN IN and reaches the minimum system 111 through the SWITCH unit 113, the minimum system resolves to a call incoming call, the minimum system 111 converts the call incoming call into analog sound through the sound card unit 116, and the analog sound passes through the expansion interface 130 to reach the speaker unit 1242 of the voice unit 124 for sound reproduction to remind the incoming call, at this time, the call incoming call is defaulted to a hands-free mode, and the touch display screen 210 is also lighted up and displays the incoming call.
There are three ways to respond: 1. touching the answer button on the touch display screen 210 to answer an incoming call is played by the speaker unit 1242; 2. pressing the answer button of the function key unit 142 on the key pad 140 to answer the incoming call, and playing the sound by the speaker unit 1242; 3. the handle 220 is picked up to listen, and is connected with the handle through the handle interface 1243 to play sound.
In video communication, the video of the camera 212 is collected through the camera interface 1122, and is compressed by the minimum system, and the like, and is packed with the audio to be sent to the calling party; meanwhile, the minimum system parses the video of the calling party and displays the video on the display unit 211 of the touch display screen 210 through the display screen interface 1121.
In voice communication, when the handset listening mode is selected, the minimum system 111 converts the voice through the sound card unit 116 and then makes a call through the handset 220. When the phone is in the hands-free answering mode, the sound of the calling party is processed and analyzed by the minimum system 111, converted into analog sound by the sound card unit 116, played by the loudspeaker unit 1242 through the expansion interface 130, picked up by the microphone unit 1241, returned to the sound card unit 116 through the expansion interface 130, converted into digital signals, and sent to the minimum system 111, processed and packaged, and sent to the calling party through the network. In another embodiment, when the minimum system detects that the input Line in and the output Line out have the connected microphone and speaker, the sound direction is sent to the Line in and Line out interface through the sound card unit 116 to perform sound amplification type sound reproduction and pickup, and the microphone unit 1241 and the speaker unit 1242 are disabled. In the embodiment of the invention, in the hands-free mode, the minimum system 111 suppresses existing acoustic echoes to ensure that the opposite end cannot hear the echo of the opposite end.
In the outgoing call mode, there are two ways to make a call, the first way is to make a dial call through the touch display screen 210, and the second way is to make a dial call through the number key unit 141 on the key pad 140, both of which can use the handsfree mode or the handle mode.
In the first mode, dialing is performed through touch input of the touch display screen 210, and the minimum system 111 returns through the touch screen interface 1123, when a call initiating button is pressed by touch, the minimum system 111 sends a relevant number to the soft switch server for number checking and sends call information to a called party, and if the called party is busy, a message is returned to the minimum system 111 to send a busy tone; if the called party rings, a message is sent back to minimum system 111 to send the ringback tone; if the called party does not answer the call over time, a timeout message is sent back to minimum system 111 to send a snooze. When the called party answers, if the called party answers in the voice mode, a voice call is performed, if the opposite end has video capability and answers in the video mode, a video call is performed, and the video acquisition function of the camera 212 is started through the camera interface 1122.
In the second mode, when dialing a call through the keypad 140, the hands-free key in the function key unit can be pressed, or the handle can be directly picked up and the number can be dialed. When dialing in this manner, the mcu 121 is notified in advance that no number is received and no call is made from the PBX. The numeric key information is converted to a common input through the key interface 150 and through the I2C bus and sent to the minimal system 111 through the expansion interface 130, which sends the dialing message to the registry server for directory and routing and sends the call message to the called party.
In the video conference mode, the MCU functionality of the minimum system 111 will be enabled. In the preset conference, the conference number is matched in advance, and related conference members are selected to join. And directly entering a conference mode on a screen, initiating a conference call, and determining whether the conference call is carried with a video call or not according to the video capability of a called party. When the called party answers and sends the video signal to the minimum system 111, the minimum system analyzes and decodes the video of each called party, adds the collected video of the calling party 212, performs scaling, splicing and synthesizing, compresses and encodes the synthesized video, and returns the compressed and encoded video to each called party with video capability. It is of course also possible to let the called party only see the video of the calling party. The video conference mode may use a hands-free mode or a grip mode. And in the video conference mode, conference members can be temporarily added to the conference interface to call and join the conference. The number of parties to the conference member is determined by the processing performance of the minimum system 111, and the minimum is not less than 4 parties.
In another embodiment, the PBX mode enables only voice communication. In the PBX mode, under the condition that power is supplied and the network is normal, the minimum system 111 performs information interaction with the micro control unit 121 through the UART serial port via the expansion interface 130, so that the micro control unit 121 controls the switching circuit 123 to establish the connection between the voice chip 122 and the voice unit 124. And under the condition of power supply abnormality or network abnormality, if the micro control unit 121 cannot receive information interaction from the minimum system 111, the micro control unit controls the switching circuit 123 to establish connection between the voice chip 122 and the voice unit 124. In the PBX mode, the switching circuit 123 makes the voice chip 122 and the voice unit 124 establish a connection, and voice call of the PBX is realized.
In the incoming call answering mode, when a calling party dials the number of the dispatching terminal of the embodiment of the invention through the far-end PBX switch, an incoming call bell enters the PSTN board through the PSTN interface and rings through the buzzer to show the incoming call. At the same time the micro control unit 121 can also detect ringing information. When the audio/video processing board 110 is connected to an external power source and an external network, the ringing information is sent to the minimum system 111 through the expansion interface 130 by the micro control unit 121, and is displayed on the touch display screen 210 through the display screen interface by the minimum system, so as to inform the PBX of the incoming call. And in case of power failure or network abnormity, only ringing is required for reminding.
When answering, the user can directly answer the phone by picking up the handle to carry out communication; the response may also be made by pressing a hands-free button on the keypad 140. In normal power supply and normal network conditions, the hands-free key information is passed to the mcu 121 through the minimum system 111. The hands-free mode cannot answer an incoming PBX call if in a power-off situation or network anomaly situation.
In the outgoing call mode, the PBX switchboard is switched to dial, and whether the handle mode or the hands-free mode is used, the dialing can be performed by using the number key unit on the key pad 140, and the micro control unit 121 performs number receiving. After the key signal reaches the micro control unit 121, the micro control unit 121 converts the number into a DTMF tone, the DTMF tone is transmitted to the voice chip 122, the DTMF tone is transmitted to the far-end PBX switch by the voice chip through a line, the PBX switch detects the DTMF receiving number, and sends out a ring to the corresponding number, so that the called party answers the call. It should be noted that, under the normal power supply and the normal network conditions, the touch input through the touch display screen 210 may be used to dial the number and return to the minimum system 111 through the touch screen interface 1123, the minimum system 111 transmits the received input number to the micro control unit 121, the micro control unit 121 converts the number into a DTMF tone, and transmits the DTMF tone to the voice chip 122, and the voice chip sends the DTMF tone to the far-end PBX switch through a line.
The fourth embodiment of the invention provides a scheduling terminal, when the audio and video processing board is not connected with an external power supply or an external network, the micro control unit controls the switching circuit to establish connection between the voice chip and the voice unit, so that the voice chip is used for processing audio information received by the voice unit and is powered by an internal power supply unit of a PSTN board. When the network of the dispatching terminal is abnormal or the power supply is abnormal, the invention automatically switches to the PSTN function to carry out voice communication, thereby ensuring the continuity of dispatching work and improving the use experience of users. In addition, minimum system still is used for compressing, concatenation, coding and transmission processing to at least one way video information of receiving when the video conference, need not additionally be equipped with MCU equipment, and through connecting POE power supply net twine in order to realize power supply and network connection, has optimized equipment wiring effectively, has reduced the network deployment complexity, practices thrift the cost.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A dispatch terminal motherboard, comprising: the audio and video processing board and the PSTN board; the audio and video processing board is connected with the PSTN board;
the audio and video processing board comprises a minimum system; the PSTN board comprises a micro control unit, a voice chip, a switching circuit and a voice unit; the minimum system and the voice chip are both connected with the voice unit through the switching circuit, and the on-off state is switched through the switching circuit;
the minimum system is connected with the micro control unit to carry out information interaction; the micro control unit is connected with the switching circuit and used for sending a control signal to control the switching circuit to switch between the minimum system and the voice chip;
when the audio and video processing board is connected with an external power supply and an external network, the micro control unit sends a first control signal to the switching circuit, and the switching circuit connects the minimum system with the voice unit so that the minimum system is used for processing audio information received by the voice unit;
when the audio and video processing board is not connected with an external power supply or an external network, the micro control unit sends a second control signal to the switching circuit, and the switching circuit connects the voice chip with the voice unit so that the voice chip is used for processing the audio information received by the voice unit;
the audio and video processing board further comprises a video unit, and the video unit is connected with the minimum system;
when the audio and video processing board is connected with an external power supply and an external network, the minimum system is used for processing the video information received by the video unit;
the minimum system is configured to process the video information received by the video unit, and specifically includes:
and the minimum system performs compression, splicing, coding and transmission processing on at least one path of video information received by the video unit.
2. The dispatch terminal motherboard of claim 1, wherein the PSTN board further comprises a PSTN interface; the PSTN interface is used to connect to a PBX switch.
3. The dispatch terminal motherboard of claim 2, wherein the PSTN board further comprises an internal power supply unit;
when the audio and video processing board is not connected with an external power supply or an external network and the PSTN interface is connected with the PBX switch, the internal power supply unit supplies power to the voice chip.
4. The scheduling terminal motherboard of claim 1 wherein the video unit comprises a display screen interface, a camera interface, a touch screen interface, and a key-down screen interface; the voice unit includes a microphone unit, a speaker unit, and a handle interface.
5. The scheduling terminal motherboard of claim 1 wherein the audio video processing board further comprises a local area network input interface and a local area network output interface;
the local area network input interface is used for connecting a POE power supply end, supplying power to the audio and video processing board and the PSTN board and accessing the network;
the local area network output interface is used for extending and expanding a network port.
6. The scheduling terminal motherboard of claim 1 wherein said audio video processing board further comprises a power interface and a wireless unit;
the power interface is used for connecting an external adapter and supplying power to the audio and video processing board and the PSTN board; the wireless unit is used for connecting a wireless network or Bluetooth equipment.
7. The dispatch terminal motherboard of any one of claims 1-6, further comprising a keypad; the key board is connected with the PSTN board; the key board comprises a number key unit and a function key unit;
the digital key unit is connected with the micro control unit of the PSTN board; the digital key unit is also connected with the minimum system of the audio and video processing board through the PSTN board;
the function key unit is connected with the minimum system through the PSTN board.
8. A scheduling terminal, comprising: a touch display screen, a handle and the dispatch terminal motherboard of any of claims 1-7; the touch display screen comprises a display unit, a camera, a touch unit and a screen lower key;
the touch display screen is connected with the video unit of the audio and video processing board; the handle is connected with the handle interface of the PSTN board.
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| CN202010102611.2A CN111447332B (en) | 2020-02-19 | 2020-02-19 | Scheduling terminal mainboard and scheduling terminal |
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| CN202010102611.2A CN111447332B (en) | 2020-02-19 | 2020-02-19 | Scheduling terminal mainboard and scheduling terminal |
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