CN216248857U - Calling device and communication control system - Google Patents

Abstract

The application provides a communicator and a communication control system, wherein the communicator comprises a first communicating switch, a second communicating switch, a first power amplifier unit, a second power amplifier unit, a first loudspeaker, a second loudspeaker, a first microphone, a second microphone and a sound card chip; the first loudspeaker is connected to the first power amplifier unit, and the second loudspeaker is connected to the second power amplifier unit; the first communication switch is arranged between the sound card chip and the first power amplification unit and the second power amplification unit and is used for connecting the first power amplification unit and the second power amplification unit with the sound card chip; the second communication switch is arranged between the sound card chip and the first microphone and the second microphone, and is used for connecting the first microphone and the second microphone with the sound card chip. According to the microphone communication control method and device, the first communication switch is arranged between the two power amplifier units, the second communication switch is arranged between the two microphones, and the microphone communication and the hands-free communication are controlled to be rapidly switched.

Description

Calling device and communication control system

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication device and a communication control system.

Background

The USB telephone is a new generation communication product which is connected with a USB interface of a computer, can be used for dialing any other computer on the network through computer voice software to realize free call of PCtoPC or can be used for dialing any common telephone and mobile phone in the world through VoIP. When the phone is used, the USB phone is inserted into the USB port of the PC and is matched with the soft phone to realize free call between the PCs, and the phone also supports the call from the PC to a common phone or a mobile phone after falling to the ground.

The existing communication device switches between hands-free communication and microphone communication by pressing a hands-free button and then putting down a microphone, and then a hands-free loudspeaker starts to make sound. A certain communication gap exists between the hands-free communication and the microphone communication, and communication continuity is affected.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present application is to provide a communication device and a communication control system, in which a first communication switch is disposed between two power amplification units, and a second communication chip is disposed between two microphones, so as to control a fast switch between a microphone call and a hands-free call.

In a first aspect, an embodiment of the present application provides a communication device, including a first communication switch, a second communication switch, a first power amplifier unit, a second power amplifier unit, a first speaker, a second speaker, a first microphone, a second microphone, and a sound card chip; the first loudspeaker is connected to the first power amplifier unit, and the second loudspeaker is connected to the second power amplifier unit; the first communication switch is arranged between the sound card chip and the first power amplification unit and the second power amplification unit and is used for connecting the first power amplification unit and the second power amplification unit with the sound card chip; the second communication switch is arranged between the sound card chip and the first microphone and the second microphone, and is used for connecting the first microphone and the second microphone with the sound card chip.

Optionally, a first connection end of the first connection switch is connected to the sound card chip, and a second connection end of the first connection switch can be connected to the first power amplifier unit or the second power amplifier unit or is in a zero position; the first connecting end of the second communication switch is connected to the sound card chip, and the second connecting end of the second communication switch can be connected to the first microphone or the second microphone or is in a zero position.

Optionally, the communication device further includes a communication controller respectively connected to the control ends of the first communication switch and the second communication switch to control the connection state of the first communication switch and the second communication switch.

Optionally, the communicator further comprises a universal serial bus interface; the sound card chip is connected to the universal serial bus interface so as to be connected with an external communication terminal through the universal serial bus interface.

Optionally, the communicator further comprises a telephone base and a telephone handset; the first power amplifier unit, the first loudspeaker and the first microphone are arranged inside the telephone base, and the second power amplifier unit, the second loudspeaker and the second microphone are arranged inside the telephone receiver.

Optionally, the communicator further comprises a first magnetic induction element and a second magnetic element; wherein the first magnetic induction element is arranged at a first target position of the telephone base, and the second magnetic element is arranged at a second target position of the telephone receiver; the telephone base is provided with a positioning groove for placing the telephone receiver, and when the telephone receiver is placed in the positioning groove, the first magnetic induction element and the second magnetic element are attracted.

Optionally, the communication device further includes an echo cancellation module; the echo cancellation module is arranged between the second communication switch and the sound card chip and used for canceling echo in sound data collected by the first microphone or the second microphone.

Optionally, the communicator further comprises a first optoelectronic isolator and a second optoelectronic isolator; the first photoelectric isolator is arranged between the communication controller and the control end of the first communication switch, and the second photoelectric isolator is arranged between the communication controller and the control end of the second communication switch.

Optionally, the communication device further includes a first voice button and a second voice button; the first voice key is arranged on the telephone base, when the first voice key is in a pressed state, the communication controller connects the second connecting end of the second communication switch to the first microphone, and when the first voice key is in a bounce state, the communication controller connects the second connecting end of the second communication switch to a zero position; the second voice key is arranged on the telephone receiver, when the second voice key is in a pressed state, the second connecting end of the second communicating switch is connected to the second microphone through the communicating controller, and when the second voice key is in a bounce state, the second connecting end of the second communicating switch is connected to the zero position through the communicating controller.

In a second aspect, an embodiment of the present application further provides a communication control system, where the communication control system includes: an external communication terminal and the communication device; the communicator further includes: a universal serial bus interface; the sound card chip is connected to the universal serial bus interface so as to be connected with an external communication terminal through the universal serial bus interface.

The embodiment of the application provides a communication device and a communication control system, which comprise a first communication switch, a second communication switch, a first power amplifier unit, a second power amplifier unit, a first loudspeaker, a second loudspeaker, a first microphone, a second microphone and a sound card chip, wherein the first communication switch is connected with the first loudspeaker; the first loudspeaker is connected to the first power amplifier unit, and the second loudspeaker is connected to the second power amplifier unit; the first communication switch is arranged between the sound card chip and the first power amplification unit and the second power amplification unit and is used for connecting the first power amplification unit and the second power amplification unit with the sound card chip; the second communication switch is arranged between the sound card chip and the first microphone and the second microphone, and is used for connecting the first microphone and the second microphone with the sound card chip. Therefore, the first communication switch is arranged between the two power amplification units, and the second communication switch is arranged between the two microphones, so that the microphone call and the hands-free call can be quickly switched.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 2 is a second schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 3 is a circuit diagram of a sound card chip according to an embodiment of the present application;

fig. 4 is a circuit diagram of a communication controller and a photo isolator according to an embodiment of the present application;

fig. 5 is a circuit diagram illustrating a connection of a first connection switch, a second connection switch, an echo cancellation module, a first power amplifier unit, a second power amplifier unit, a first speaker, a second speaker, a first microphone, and a second microphone according to an embodiment of the present disclosure.

Reference numerals: the system comprises a 1-sound card chip, a 2-first communication switch, a 3-second communication switch, a 4-first power amplifier unit, a 5-second power amplifier unit, a 6-communication controller, a 7-universal serial bus interface, an 8-echo cancellation module, a 9-direct current voltage stabilization chip, a 10-memory, a 11-site diagram retrieval key, a 12-volume reduction key, a 13-volume increase key, a 14-first magnetic induction element, a 31-first microphone, a 32-second microphone, a 41-first loudspeaker, a 51-second loudspeaker, a 61-hands-free call key, a 62-first voice key and a 63-second voice key.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "provided", "mounted", "communicated" and "connected" are to be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

First, an application scenario to which the present application is applicable will be described. The present application may be applied to "scheduling a station," but it should be understood that the station is only described as an example in the embodiment of the present application, but the application scenario of the present application is not limited thereto.

The existing communication device installed in the station switches between hands-free communication and microphone communication in such a way that a hands-free button is pressed down and then a microphone is put down, and then a hands-free loudspeaker starts to make a sound. A certain communication gap exists between the hands-free communication and the microphone communication, so that the communication continuity is influenced, and the working efficiency of a station is further influenced.

In order to overcome at least one of the above drawbacks, embodiments of the present application provide a communication device that quickly controls a switch between a microphone communication and a hands-free communication.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure. As shown in fig. 1, a communication device provided in an embodiment of the present application includes: the sound card comprises a sound card chip 1, a first communication switch 2, a second communication switch 3, a first power amplifier unit 4, a second power amplifier unit 5, a first loudspeaker 41, a second loudspeaker 51, a first microphone 31 and a second microphone 32.

Specifically, the first speaker 41 is connected to the first power amplifier unit 4, and the second speaker 51 is connected to the second power amplifier unit 5.

Here, the first power amplification unit 4 may amplify a weak electrical signal from a signal source (i.e., an audio signal received from the sound card chip 1) to drive the first speaker 41 to emit sound. The second power amplification unit 5 may amplify a weak electrical signal from the signal source (i.e., the audio signal received from the sound card chip 1) to drive the second speaker 51 to emit sound.

As an example, the first power amplifier unit 4 and the second power amplifier unit 5 may be various existing chips capable of performing power amplification, which is not limited in this application.

The first communication switch 2 is arranged between the sound card chip 1 and the first power amplifier unit 4 and the second power amplifier unit 5, so as to be used for connecting the first power amplifier unit 4 and the second power amplifier unit 5 with the sound card chip 1, and the second communication switch 3 is arranged between the sound card chip 1 and the first microphone 31 and the second microphone 32, so as to be used for connecting the first microphone 31 and the second microphone 32 with the sound card chip 1.

Illustratively, a first connection end of the first pass switch 2 is connected to the sound card chip 1, a second connection end of the first pass switch 2 can be connected to the first power amplifier unit 4 or the second power amplifier unit 5 or is in a zero position, a first connection end of the second pass switch 3 is connected to the sound card chip 1, and a second connection end of the second pass switch can be connected to the first microphone 31 or the second microphone 32 or is in a zero position.

As an example, the first connection switch 2 and the second connection switch 3 may be both analog switches of two, the first connection switch 2 is used to select one of the first power amplifier unit 4 and the second power amplifier unit 5 to be connected to the sound card chip 1, and the second connection switch 3 is used to select one of the first microphone 31 and the second microphone 32 to be connected to the sound card chip 1.

For example, when the first power amplifier unit 4 is connected to the sound card chip 1, the first speaker 41 connected to the first power amplifier unit 4 may emit sound, and when the second power amplifier unit 5 is connected to the sound card chip 1, the second speaker 51 connected to the second power amplifier unit 5 may emit sound.

When the first microphone 31 is connected to the sound card chip 1, the first microphone 31 may be used to collect voice data of the user, and when the second microphone 32 is connected to the sound card chip 1, the second microphone 32 may be used to collect voice data of the user.

In the embodiment of the present application, the above-mentioned communication device may further include a communication controller (not shown in the figure), which is respectively connected to the control terminals of the first communication switch 2 and the second communication switch 3, so as to control the connection state of the first communication switch 2 and the second communication switch 3.

That is, the communication controller may control the communication state of the first communication switch 2 and the second communication switch 3. In other words, the connectivity controller may control the first and second connectivity switches 2 and 3 to implement different connection states between the first and second power amplifier units 4 and 5 and the sound card chip 1, and between the first and second microphones 31 and 32 and the sound card chip 1.

Referring to fig. 2, fig. 2 is a second schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 2: the device comprises a sound card chip 1, a first communication switch 2, a second communication switch 3, a first power amplifier unit 4, a second power amplifier unit 5, a communication controller 6, a universal serial bus interface 7, an echo cancellation module 8, a direct current voltage stabilization chip 9, a memory 10, a site picture adjusting key 11, a volume reduction key 12, a volume increase key 13, a first magnetic induction element 14, a first loudspeaker 41, a second loudspeaker 51, a first microphone 31, a second microphone 32, a hands-free call key 61, a first voice key 62 and a second voice key 63.

Specifically, the sound card chip 1 has a digital-to-analog conversion function, and converts a called party digital audio signal received from the universal serial bus interface 7 into a called party analog audio signal. The first and second communication switches 2 and 3 may be analog switch chips.

The first connection end of the first connection switch 2 is connected to the sound card chip 1 and is used for receiving called party analog audio signals from the sound card chip 1, and the second connection end of the first connection switch 2 can be connected to the first power amplification unit 4 or the second power amplification unit 5 or is in a zero position. Here, the first connection switch 2 receives the called party analog audio signal from the sound card chip 1 from the first connection terminal, and controls to send the received called party audio signal to the first power amplifier unit 4 or the second power amplifier unit 5, or does not send the called party analog audio signal to the outside, thereby controlling the first power amplifier unit 4 or the second power amplifier unit 5 to be in a working state or a mute state.

The first connection end of the second communication switch 3 is connected to the sound card chip 1, and the second connection end of the second communication switch 3 can be connected to the first microphone 31 or the second microphone 32 or is in a zero position. Here, the second pass switch 3 receives the caller analog audio signal transmitted from the first microphone 31 or the second microphone 32 from the second connection terminal and transmits the received caller analog audio signal to the sound card chip 1 through the first connection terminal. The second communication switch 3 can control the first microphone 31 and the second microphone 32 to be in an operating state or a non-operating state. The sound card chip 1 is also responsible for converting the received analog audio signal of the calling party into a digital audio signal of the calling party and sending the digital audio signal of the calling party to the PC through the universal serial bus interface 7.

In an alternative example, the calling device may further include a telephone base and a telephone handset (not shown in the figure), wherein the first power amplifying unit 4, the first speaker 41 and the first microphone 31 may be disposed inside the telephone base, and the second power amplifying unit 5, the second speaker 51 and the second microphone 32 may be disposed inside the telephone handset. It will be appreciated that the second power amplifier unit 5 may alternatively be mounted in the base of the telephone and connected to the second loudspeaker by a wire. Here, the handsfree phone call is realized by the first speaker 41 and the first microphone 31 in combination, and the microphone phone call is realized by the second speaker 51 and the second microphone 32 in combination. The communication control of the loudspeaker and the microphone is realized through the two communication switches, and the communication device provided by the application can realize the switching between the hands-free communication and the microphone communication.

Optionally, the communicator further comprises a connectivity controller 6.

Specifically, the communication controller 6 is connected to control terminals of the first communication switch 2 and the second communication switch 3, respectively, to control connection states of the first communication switch 2 and the second communication switch 3. Here, the control terminal of the communication switch may be an on-off signal input pin (IN pin) of the analog switch chip, and the communication controller 6 controls the connection state of the communication switch by controlling an electric signal sent to the analog switch chip, thereby controlling the current voice call by a combination of a speaker and a microphone IN the telephone handset or the telephone base.

Optionally, the communicator further comprises a universal serial bus interface 7.

Specifically, the sound card chip 1 is connected to a universal serial bus interface 7 to be connected with a PC through the universal serial bus interface 7. Here, the usb interface 7 performs digital audio signal exchange with the sound card chip 1, for example, the sound card chip 1 converts a called party digital audio signal received from the usb interface 7 into a called party analog audio signal, and sends the called party analog audio signal to the first connection switch 2; the calling party can selectively send the analog audio signal of the called party to the first power amplifier unit 4 through the first communicating switch 2 and play the audio signal outwards through the first loudspeaker 41, or send the analog audio signal of the called party to the second power amplifier unit 5 and play the audio signal outwards through the second loudspeaker 51. The first microphone 31 or the second microphone 32 sends the picked-up calling party analog audio signal to the second communication switch 3; the sound card chip 1 receives the calling party analog audio signal sent by the second communicating switch 3, converts the calling party analog audio signal into a calling party digital audio signal, sends the calling party digital audio signal to the universal serial bus interface 7, and sends the calling party digital audio signal to the PC through the universal serial bus interface 7, so that network communication is realized.

Optionally, the communication device further comprises a first magnetic induction element 14 and a second magnetic element (not shown in the figure), wherein the first magnetic induction element 14 is disposed at a first target position of the telephone base, the second magnetic element is disposed at a second target position of the telephone receiver, and a positioning groove for placing the telephone receiver is disposed on the telephone base, so that the first magnetic induction element 14 and the second magnetic element attract each other when the telephone receiver is placed in the positioning groove.

Specifically, the first magnetic induction element 14 and the second magnetic induction element are correspondingly installed in the telephone base and the telephone receiver, when the first magnetic induction element 14 and the second magnetic induction element can be attracted and attached to each other, the microphone is indicated to be hung off, and when the first magnetic induction element 14 and the second magnetic induction element are not attracted and attached to each other, the microphone is indicated to be hung off. The first magnetic induction element 14 is connected to the communication controller 6, and the first magnetic induction element 14 transmits information of off-hook or on-hook of the microphone to the communication controller 6, so that the communication controller 6 knows the current off-hook or on-hook state of the microphone.

Optionally, the communicator further comprises an echo cancellation module 8. The echo cancellation module 8 is disposed between the second communication switch 3 and the sound card chip 1, and is configured to cancel an echo in the sound data collected by the first microphone 31 or the second microphone 32. Here, the echo cancellation module 8 may be any of various existing processing chips with echo cancellation functions, and the present application is not limited thereto.

Specifically, the input audio signal of the echo cancellation module 8 comes from the second communication switch 3, the second communication switch 3 is connected to the first microphone 31 installed on the telephone base and the second microphone 32 installed on the telephone receiver, the calling party analog audio signal is input to the echo cancellation module 8 through the second communication switch 3, meanwhile, the echo cancellation module 8 is further connected to the first connection end of the sound card chip 1, the echo cancellation module 8 sends the calling party analog audio signal after echo cancellation to the sound card chip 1, the sound card chip 1 performs analog-to-digital conversion, and sends the calling party digital audio signal after echo cancellation to the PC through the universal serial bus interface 7. Therefore, the echo cancellation of the two microphones can be realized by using one echo cancellation module, so that the communication quality is improved, the circuit structure can be simplified, and the cost is reduced.

Optionally, the intercom device further includes a first opto-isolator and a second opto-isolator (not shown in the figures). The first photoelectric isolator is arranged between the communication controller 6 and the control end of the first communication switch 2, and the second photoelectric isolator is arranged between the communication controller 6 and the control end of the second communication switch 3. The photoelectric isolator can realize that the communication controller 6 is photoelectrically isolated from the first communication switch 2, the second communication switch 3, the first power amplifier unit 4 and the second power amplifier unit 5, and the interference of the digital circuit to the audio circuit is isolated while the level conversion is carried out.

Optionally, the telephony device further comprises a hands-free telephony key 61.

Specifically, the hands-free call button 61 is provided on the telephone base and connected to the connection controller 6, and when the hands-free call button 61 is pressed, control data for performing hands-free call is transmitted to the connection controller 6. When the hands-free call button 61 is in a pressed state, the connection controller 6 connects the second connection end of the first connection switch 2 to the first power amplification unit 4, and at this time, the first loudspeaker 41 on the telephone base is in a working state, and hands-free call is started; when the hands-free talk button 61 is in the sprung state, the connection controller 6 connects the second connection terminal of the first connection switch 2 to the second power amplifier unit 5, and at this time, the second speaker 51 in the telephone receiver is in the working state, and the user returns to the microphone talk.

In addition, a volume-down key 12, a volume-up key 13 and a site map retrieval key 11 which are connected with the sound card chip 1 are also arranged on the telephone base; the volume key is used for controlling the volume of the loudspeaker, the station chart calling key 11 is used for sending information for calling the station chart to a PC (personal computer) end connected with the communication device, and the PC end displays the station chart information on a display device of the PC end after receiving the information for calling the station chart.

Optionally, the communicator further comprises a first voice button 62 and a second voice button 63, wherein the first voice button 62 is disposed on the telephone base, the communication controller 6 connects the second connection terminal of the second communication switch 3 to the first microphone 31 when the first voice button 62 is in a pressed state, and the communication controller 6 connects the second connection terminal of the second communication switch 3 to the zero position when the first voice button 62 is in a sprung state; the second voice button 63 is provided on the telephone handset, the connection controller 6 connects the second connection terminal of the second connection switch 3 to the second microphone 32 when the second voice button 63 is in a pressed state, and the connection controller 6 connects the second connection terminal of the second connection switch 3 to the zero position when the second voice button 63 is in a sprung state.

Specifically, the voice key is used for implementing a voice recognition function, and is used for determining a called party to which a current calling party wants to talk. The voice button is connected with the communication controller 6, when the first voice button 62 is pressed, the first microphone 31 on the telephone base is activated to receive the voice information of the calling party; when the second voice button 63 is pressed, the second microphone 32 on the handset is activated to receive the voice message of the calling party. Meanwhile, the sound card chip 1 receives voice information, after digital-to-analog conversion, the voice information is sent to the PC through the universal serial bus interface 7, after the PC confirms the name of a called party in the call through voice recognition, the PC searches the database, finds the called object and sends a ringing signal to the called party, and the call between the calling party and the called party is realized.

The following describes a process of implementing voice call by the call device of the present application: the communication device is connected with the PC through a universal serial bus interface 7; when the calling device is in the on state, the calling party makes the calling device in the off-hook state by picking up the microphone or pressing the hands-free calling button 61; pressing a second voice key 63 on the microphone or a first voice key 62 on the telephone base to speak out the called object, and establishing a communication link with the called object to carry out conversation; the off-hook operation is carried out in the hands-free state to switch to the microphone communication, the hands-free communication button 61 is pressed in the microphone communication state to switch to the hands-free communication state, and the calling party can switch according to the situation when in communication; the calling party can correspondingly change the volume of the loudspeaker by pressing a volume-down key 12 or a volume-up key 13 on the telephone base; the calling party presses a site map calling key on the telephone base, and a PC connected with the communicator displays corresponding site map information; if the calling party presses the hands-free call button 61 again in the hands-free call state, or puts down the microphone in the microphone call state, the call can be ended.

Referring to fig. 3-5, fig. 3-5 are circuit diagrams according to embodiments of the present disclosure. As shown in fig. 4, in terms of the circuit, the PB0 pin of the continuity controller 6 is connected to the first magnetic induction element 14 for receiving the off-hook/on-hook information of the telephone microphone. The PB1 pin of the connectivity controller 6 is connected to the first voice button 62 and the second voice button 63, and is used for receiving control information for turning on voice recognition. The PB5 pin of the connectivity controller 6 is connected to the handsfree talk button 61 for receiving handsfree control information.

As shown in fig. 3, the sound card chip 1 is connected to the PC through a universal serial bus interface 7(USB interface), and the UDM and UDP pins of the sound card chip 1 are connected to a USB data negative signal line (D-) and a USB data positive signal line (D +) of the universal serial bus interface 7, respectively, to perform digital signal exchange; the HPOUT-L pin of the sound card chip 1 is connected with the COM1 pin of the first communication switch 2, and the sound card chip 1 converts the digital audio signal of the called party sent by the computer into the analog audio signal of the called party through internal digital-to-analog conversion and sends the analog audio signal of the called party to the first communication switch 2. As shown in fig. 4, the hands-free call button 61 is connected to a PB5 pin of the connectivity controller 6, and sends a hands-free control signal to the connectivity controller 6. The connection controller 6 controls the output end of the first connection switch 2 through the first optoelectronic isolator according to the received hands-free control signal, wherein a PB4 pin of the connection controller 6 is connected with an optoelectronic isolator O3 of the optoelectronic isolator, and an output signal of the connection controller is subjected to level conversion through an optoelectronic isolator O3 and then is connected with IN1 and IN2 pins of the first connection switch, so as to control the audio signal input of the first power amplifier unit 4 and the second power amplifier unit 5. Further controlling the working states of the first speaker 41 and the second speaker 51, wherein the NC1 pin of the first through switch 2 is connected with the IN-, VO + pins of the first power amplifier unit 4 for sending the called party analog audio signal to the first power amplifier unit 4; the pin NO1 of the first through switch 2 is connected with the pin IN-, VO + of the second power amplification unit 5 for sending the called party analog audio signal to the second power amplification unit 5. The VO +, VO-pin of the first power amplifier unit 4 is connected to the first speaker 41 for sending the called party analog audio signal thereto. The VO +, VO-pin of the second power amplifier unit 5 is connected to the second speaker 51 for sending the called party analog audio signal thereto.

Meanwhile, a PB2 pin of the communication controller 6 is connected to a photoelectric isolation device O1 of the photoelectric isolator, and an output signal of the communication controller is subjected to level conversion by the electric isolation device O1, subjected to potential reversal output by the schmitt inverter U4D, and then connected to a shut d pin of the first power amplification unit 4, so as to control the working state of the first speaker 41; the output signal of the PB2 pin of the communication controller 6 passes through the schmitt inverter U4D, then passes through the schmitt inverter U4E to perform potential reversal output, and is connected to the hutd _ V pin of the second power amplification unit 5, so as to control the working state of the second speaker 51, and realize the speaker output of the called party analog audio signal on the microphone or the telephone base.

The communication controller 6 also controls the output end of the second communication switch 3 through the second optoelectronic isolator according to the received hand-free control signal, thereby controlling the working states of the first microphone 31 and the second microphone 32 and receiving the calling party analog audio signal from the microphone or the microphone on the telephone base. Specifically, a PB3 pin of the communication controller 6 is connected to a photoelectric isolation device O2 of the photoelectric isolator, and an output signal of the PB3 pin is subjected to level conversion by the electric isolation device O2, subjected to potential reversal output by the schmitt inverter U4A, and then connected to IN1 and IN2 pins of the second communication switch 3, so as to control the working states of the first microphone 31 and the second microphone 32. Here, the microphone positive terminal interface of the first microphone on the telephone base is connected to the NC1 pin of the second communication switch 3, and the microphone negative terminal interface is connected to the NC2 pin of the second communication switch 3, for receiving the voice information of the calling party when the calling device is in the handsfree state. The microphone positive interface of the second microphone on the telephone microphone is connected with the pin NO1 of the second communication switch 3, and the microphone negative interface is connected with the pin NO2 of the second communication switch 3, and is used for receiving the voice information of the calling party when the communicator is in an off-hook state. The microphone collects the sound information of the calling party and sends the analog audio signal of the calling party to the second communication switch 3.

The COM1 pin and the COM2 pin of the second pass switch 3 are respectively connected with the MIC0+ pin and the MIC 0-pin of the echo cancellation module 8, and are used for sending a calling party analog audio signal to the echo cancellation module 8. Meanwhile, a LINE-IN pin of the echo cancellation module 8 is connected to an HPOUT _ L pin of the sound card chip 1, and is configured to receive an analog audio signal of a called party, so as to implement echo cancellation. The LINE-OUT pin of the echo cancellation module 8 is connected with the ADC-INL pin of the sound card chip 1, and is used for sending the echo-cancelled calling party analog audio signal to the sound card chip 1.

The PREV and STOP pins of the sound card chip 1 are connected with the PC1 and PC0 pins of the communication controller 6 through an I2C bus, and are used for exchanging control information with the communication controller 6. The analog audio signal of the calling party is converted into a digital audio signal of the calling party through the sound card chip 1 after the echo of the analog audio signal of the calling party is eliminated through the echo eliminating module 8, and the digital audio signal of the calling party is sent to the PC through the universal serial bus interface 7.

The station chart calling key 11, the volume-down key 12 and the volume-up key 13 are respectively connected with an REC-EN pin, a VOLDN pin and a VOLUP pin of the sound card chip 1, when the keys are pressed down, the sound card chip 1 sends the key type value to a computer through the universal serial bus interface 7, and corresponding operation is executed on computer software.

The sound card chip 1 is further connected to a memory 10, and the SCL _24C08 pin and the SDA _24C08 pin of the sound card chip 1 are respectively connected to the SCL pin and the SDA pin of the memory 10, and are used for storing configuration information of the sound card chip 1.

And the direct current voltage stabilizing chip 9 is used for stabilizing the 5V voltage of the universal serial bus interface 7 into 4.3V and supplying power to each element through the VDD pins of the first power amplification unit 4 and the second power amplification unit 5, the echo cancellation module 8, the first communication switch 2 and the VCC pin of the second communication switch 3.

To sum up, the communication device provided by the embodiment of the application has a simple structure, is easy to be networked, and can realize independent power supply of a digital circuit and an analog circuit. The input and output functions of audio signals are realized by using a sound card chip, and the conversion of digital quantity of audio output signals and the conversion of analog quantity of microphone input signals into digital quantity are realized by single-chip hardware, and the communication with a PC (personal computer) is realized through a USB (universal serial bus) interface. The communication device is controlled by the single chip microcomputer, the operation information of the telephone microphone is input to the single chip microcomputer, the single chip microcomputer is communicated with the sound card chip through an I2C port, and the telephone state is sent to the PC through the sound card chip. The output of the microphone and the speaker of the hands-free device and the input of the microphone are controlled and switched by the single chip microcomputer. The singlechip controls the audio circuit by adopting photoelectric isolation, so that the interference of the digital circuit to the audio circuit is reduced. By means of the application of the voice recognition key, a number dialing key is cancelled, and hardware cost is reduced.

The embodiment of the present application further provides a communication control system, which includes: an external communication terminal and the call device in the above-described embodiment shown in fig. 1 to 5; the communicator further includes: a universal serial bus interface; the sound card chip is connected to the universal serial bus interface so as to be connected with an external communication terminal through the universal serial bus interface. For a specific implementation, reference may be made to an embodiment of the communication device, and details are not described herein.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A communicator is characterized by comprising a first communication switch, a second communication switch, a first power amplifier unit, a second power amplifier unit, a first loudspeaker, a second loudspeaker, a first microphone, a second microphone and a sound card chip;

the first loudspeaker is connected to the first power amplifier unit, and the second loudspeaker is connected to the second power amplifier unit;

the first communication switch is arranged between the sound card chip and the first power amplification unit and the second power amplification unit and is used for connecting the first power amplification unit and the second power amplification unit with the sound card chip;

the second communication switch is arranged between the sound card chip and the first microphone and the second microphone, and is used for connecting the first microphone and the second microphone with the sound card chip.

2. The communication device according to claim 1, wherein a first connection end of the first connection switch is connected to the sound card chip, and a second connection end of the first connection switch is capable of being connected to the first power amplifier unit or the second power amplifier unit or being in a zero position;

the first connecting end of the second communication switch is connected to the sound card chip, and the second connecting end of the second communication switch can be connected to the first microphone or the second microphone or is in a zero position.

3. The communication device according to claim 2, further comprising: and the communication controller is respectively connected to the control ends of the first communication switch and the second communication switch so as to control the connection state of the first communication switch and the second communication switch.

4. The communication device according to claim 1, further comprising: a universal serial bus interface;

the sound card chip is connected to the universal serial bus interface so as to be connected with an external communication terminal through the universal serial bus interface.

5. A communication apparatus according to claim 3, further comprising: a telephone base and a telephone handset;

the first power amplifier unit, the first loudspeaker and the first microphone are arranged inside the telephone base, and the second power amplifier unit, the second loudspeaker and the second microphone are arranged inside the telephone receiver.

6. The communication device according to claim 5, further comprising: a first magnetic induction element and a second magnetic element;

wherein the first magnetic induction element is arranged at a first target position of the telephone base, and the second magnetic element is arranged at a second target position of the telephone receiver;

the telephone base is provided with a positioning groove for placing the telephone receiver, and when the telephone receiver is placed in the positioning groove, the first magnetic induction element and the second magnetic element are attracted.

7. The communication device according to claim 1, further comprising: an echo cancellation module;

the echo cancellation module is arranged between the second communication switch and the sound card chip and used for canceling echo in sound data collected by the first microphone or the second microphone.

8. A communication apparatus according to claim 3, further comprising: a first opto-isolator and a second opto-isolator;

the first photoelectric isolator is arranged between the communication controller and the control end of the first communication switch, and the second photoelectric isolator is arranged between the communication controller and the control end of the second communication switch.

9. The communication device according to claim 5, further comprising: a first voice key and a second voice key;

the first voice key is arranged on the telephone base, when the first voice key is in a pressed state, the communication controller connects the second connecting end of the second communication switch to the first microphone, and when the first voice key is in a bounce state, the communication controller connects the second connecting end of the second communication switch to a zero position;

the second voice key is arranged on the telephone receiver, when the second voice key is in a pressed state, the second connecting end of the second communicating switch is connected to the second microphone through the communicating controller, and when the second voice key is in a bounce state, the second connecting end of the second communicating switch is connected to the zero position through the communicating controller.

10. A communication control system, comprising: an external communication terminal and a call device as claimed in any one of claims 1 to 9;

the calling device further comprises: a universal serial bus interface;

the sound card chip is connected to the universal serial bus interface so as to be connected with an external communication terminal through the universal serial bus interface.

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