CN210351549U

CN210351549U - Earphone signal communication circuit

Info

Publication number: CN210351549U
Application number: CN201921226354.2U
Authority: CN
Inventors: 胡平
Original assignee: Shenzhen Ruier Electronic Co Ltd
Current assignee: Shenzhen Ruier Electronic Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-04-17
Anticipated expiration: 2029-07-31

Abstract

The utility model is suitable for an earphone circuit technical field provides an earphone signal communication circuit, include: the earphone comprises a microphone audio line, a master control chip arranged at a master control end, a slave control chip arranged in an earphone shell and a line control circuit arranged on the microphone audio line, wherein the master control chip is in communication connection with the slave control chip through the microphone audio line; the main control chip is provided with an IO port with an AD function, and an AD mode and an IO mode are provided to carry out circular switching in a preset period. The utility model provides a current earphone realize that a plurality of functions need many sinle silks to carry out the communication, and then cause problem with high costs.

Description

Earphone signal communication circuit

Technical Field

The utility model belongs to the technical field of the earphone circuit, especially, relate to an earphone signal communication circuit.

Background

In these years, TYPE _ C interfaces have become popular, and various digital products such as mobile phones, tablets, computers, game machines, music players, and electronic books have been replaced with USB TYPE _ C interfaces. The transmission speed is 10Gbps at most, the power transmission can reach 100W at most, and the double-sided plug-in and pull-out device can be used for double-sided plug-in and pull-out and the like. This is a big impact on the earlier game headphones with USB TYPE a plugs, so the new game headphones are designed as TYPE _ C plugs. Each switch on the drive-by-wire circuit is directly led to the host end by one wire, so that the required functions are realized, although the circuit is simple, the number of keys is increased, and the earphone has functions such as a microphone, volume, up/down bending, play/pause, mode, sound effect and the like, besides the sound and the microphone, the functions such as lighting, vibration, gesture, direction, idea and the like exist on the drive-by-wire.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an earphone signal communication circuit aims at solving current earphone and realizes that a plurality of functions need many sinle silks to communicate, and then causes problem with high costs.

The embodiment of the utility model provides an earphone signal communication circuit, include: the earphone comprises a microphone audio line, a master control chip arranged at a master control end, a slave control chip arranged in an earphone shell and a line control circuit arranged on the microphone audio line, wherein the master control chip is in communication connection with the slave control chip through the microphone audio line; the main control chip is provided with an IO port with an AD function, and an AD mode and an IO mode are provided to carry out circular switching in a preset period.

Furthermore, the main control chip reads the communication signal on the microphone audio line through the IO mode on the IO port, or transmits the communication signal to the microphone audio line. Therefore, the master control chip can perform information interaction with the slave control chip to realize various function controls of the earphone.

Furthermore, the main control chip is a single chip microcomputer and is used for processing control signals uploaded by the linear control circuit and communication signals uploaded by the slave control chip, and also can be used for processing control signals uploaded by the main control end.

Furthermore, the slave control chip is a single chip microcomputer and is used for processing communication signals or control signals uploaded by the master control chip and also used for processing signals of other functional modules.

Still further, the drive-by-wire circuit comprises one or more function keys and one or more divider resistors corresponding to the function keys. Therefore, the control signal of the corresponding function can be input to the microphone audio line through the matching of the function key and the divider resistor.

Furthermore, the divider resistor is connected with the microphone audio line and is used for inputting a control signal of a corresponding function to the microphone audio line. Therefore, control signals obtained by matching the functional keys with the voltage dividing resistors can be transmitted to the main control chip from the microphone audio line for processing.

Furthermore, the main control chip reads the control signal through an AD mode on an IO port to control a corresponding function of the headset.

Furthermore, the intelligent control system also comprises a functional module, and the functional module is in communication connection with the slave control chip. Therefore, the function module can upload the collected function signals to the slave control chip for processing, and further obtain corresponding control signals.

Furthermore, the functional module comprises one or more signal acquisition units, wherein the signal acquisition units are connected with the slave control chip and communicate with the master control chip through the slave control chip and the microphone audio line. Therefore, control signals with different functions can be acquired through one or more signal acquisition units, and are processed through the slave control chip, and then are transmitted to the master control chip through the microphone audio line to execute corresponding instruction information, so that more functions are realized.

Still further, the functional module includes: and the function prompting unit is connected with the slave control chip. Used for prompting the state of the earphone during function control.

The utility model discloses the beneficial effect who reaches, the utility model discloses a master control chip only reads the mode circulation and switches and realize the communication through IO port and AD mode and two kinds of IO modes that have the AD function in a microphone audio line, the master control chip from between the control chip. Therefore, the master control chip can transmit communication signals to the microphone audio line through the IO port, and can also receive the communication signals and the control signals on the microphone audio line through the IO port, so that information interaction is realized with the slave control chip, and the earphone can be controlled to realize multiple functions. The utility model provides a current earphone realize that a plurality of functions need many sinle silks to carry out the communication, and then cause problem with high costs.

Drawings

Fig. 1 is a schematic block diagram of an earphone signal communication circuit according to an embodiment of the present invention;

fig. 2 is a circuit diagram of an earphone signal communication circuit according to an embodiment of the present invention;

fig. 3 is a circuit diagram of a line control circuit in an earphone signal communication circuit according to an embodiment of the present invention;

fig. 4 is a circuit diagram for connecting the slave control chip and the functional module in the earphone signal communication circuit according to the embodiment of the present invention.

Wherein, 1, a main control chip; 2. an IO port; 3. a microphone audio line; 4. a slave control chip; 5. a drive-by-wire circuit; 6. a function presenting unit; 7. a prompt resistor; 8. a horn; 9. a horn wire; 10. a power line; 11. a voltage dividing resistor; 12. function keys; 13. a microphone.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

As shown in fig. 1-4, an embodiment of the present invention provides an earphone signal communication circuit, including: the earphone comprises a microphone audio line 3, a master control chip 1 arranged at a master control end, a slave control chip 4 arranged in an earphone shell and a line control circuit 5 arranged on the microphone audio line 3, wherein the master control chip 1 is in communication connection with the slave control chip 4 through the microphone audio line 3; the main control chip 1 is provided with an IO port 2 with an AD function, and an AD mode and an IO mode are provided to perform cycle switching in a preset period.

The main control chip 1 is configured to process a control signal uploaded by the line control circuit 5 and a communication signal uploaded by the slave control chip 4, and may also be configured to process a control signal uploaded by the main control terminal. The main control chip 1 may be a single chip microcomputer, a DSP chip, or other control chips, where the single chip microcomputer may be an ARM single chip microcomputer or other series of single chip microcomputers, and it should be noted that, in this embodiment, the specific type of the main control chip 1 is not limited, and all other control chips with control functions should be regarded as alternatives in this embodiment. The main control terminal can be arranged on an input terminal connected between the earphone and the host computer terminal, and can also be arranged on the host computer terminal. The host end can be a computer host, a notebook computer, a mobile phone, a tablet and other equipment. The earphone in the embodiment of the invention can be a game earphone and a common earphone.

The slave control chip is used for processing the communication signals or the control signals uploaded by the master control chip 1 and also used for processing signals of other functional modules. The slave control chip may be a single chip microcomputer, a DSP chip, or other control chips, where the single chip microcomputer may be a PIC10F320 single chip microcomputer, or a 51 single chip microcomputer, and it should be noted that, in this embodiment, the specific type of the slave control chip 4 is not limited, and other control chips with control functions should be regarded as alternatives in this embodiment. The slave chip 4 may be arranged in the ear shell of the headset.

The microphone audio line 3 can transmit an audio signal transmitted from the microphone 13, a communication signal transmitted from the control chip 4, a control signal transmitted from the line control circuit 5, and the like, and the audio signal, the communication signal, and the control signal can be referred to as audio data, communication data, and control data, or can be referred to as an audio command, a communication command, and a control command. The method is used for realizing communication and control between the master control chip 1 and the slave control chip 4. The IO port 2 with the AD function is used for setting a microphone audio line 3, and is a connection port and a communication port for communication between the master control chip 1 and the slave control chip 4. The IO port 2 may transmit signals or may read signals.

Further, as shown in fig. 3, the drive-by-wire circuit 5 includes one or more function keys 12, and one or more voltage dividing resistors 11 corresponding to the function keys 12. Divider resistance 11 with microphone audio line 3 is connected, through function button 12 with divider resistance 11 cooperation is to the control signal of microphone audio line 3 input corresponding function. Thus, the control signal obtained by the cooperation of the function key 12 and the voltage dividing resistor 11 can be transmitted from the microphone audio line 3 to the main control chip 1 for processing. The main control chip 1 reads the control signal through the AD mode on the IO port 2 to control the corresponding function of the earphone. The function keys 12 may include a volume up key, a volume down key, a previous tune key, a next tune key, a pause key, a play key, etc. and are mainly used for controlling the functions of the headset, for example, controlling the volume up/down, the previous tune/next tune, the pause/play, etc. of the headset, where one key corresponds to one function. Each function key 12 is configured with one or more voltage dividing resistors 11 for configuring the voltage value of the function key 12 to control different functions. The control signals transmitted by the drive-by-wire circuit 5 to the microphone audio line 3 are all voltage signals, which may also be referred to as voltage values. The control function is different, and the uploaded voltage value is also different. I.e. each function key 12 corresponds to a voltage value, each voltage value being considered as a control signal. The wire control circuit 5 further comprises a microphone 13 for collecting audio signals, and uploading the audio signals to the main control chip 1 through the wire control circuit 5 for processing and transmission.

The AD mode is used to read a communication signal on the microphone audio line 3 or transmit a communication signal to the microphone audio line 3. The communication signal is a signal uploaded to the microphone audio line 3 by the master control chip 1 and is used for communicating with the slave control chip 4; or the signal uploaded to the microphone audio line 3 from the control chip 4 is used for communicating with the main control chip 1. The communication signal may be a data signal or a command signal. The IO mode is used to read the control signal transmitted to the microphone audio line 3 on the line control line, and is used to control the corresponding function of the earphone. It can also be said that the control circuit is used for reading the key voltage value of the line control circuit 5, and then the control of different functions is realized according to different voltage values. And the audio signal can be used for reading the audio signal transmitted to the microphone audio line by the microphone 13 in the line control circuit 5 to realize voice communication. Therefore, the master control chip 1 and the slave control chip 4 realize communication in two reading modes through only one microphone audio line 3 and one IO port 2.

The preset period may be a time interval between the AD mode and the IO mode, that is, after waiting for a preset period after the IO port 2 is in the AD mode, the AD mode is switched to the IO mode, and after waiting for a preset period, the AD mode is switched to the IO mode again, and the next switching may be performed, so that the AD mode and the IO mode of the IO port 2 are alternated, and the signal on the microphone audio line 3 is monitored. The preset period may be set to 2 seconds, 5 seconds, 8 seconds, 10 seconds, 20 seconds, etc., and the preset period may be set according to actual needs, and in the present embodiment, it is preferably set to 5 seconds.

The working process between the AD mode and the IO mode is as follows: when all ports on the microphone audio line 3 do not send communication information, the IO port 2 on the main control chip 1 is in a receiving state, and monitors communication signals or control information on the microphone audio line 3 in real time, if communication signals or control information to be executed are received, the single chip or the main control will execute the instruction information appointed by the program. If the communication signal or the control information is to be sent to the microphone audio line 3, the communication signal or the control information is sent only when the communication signal or the control information is not available on the microphone audio line 3, the receiving state is immediately switched after the sending is finished, and the other party can see whether the communication signal or the control information is received or not, otherwise, the command is sent again. Because the data is uploaded on the microphone audio line 3, in order to avoid the range of 20-20 KHz of audio, the transmission rate can be set to 28.8Kbps, so that information transmission can be better carried out, and the transmission rate can also be set to other values according to actual needs. Further, in the normal operation process of the control chip, if the IO port 2 of the main control chip 1 is in the receiving state, the IO port 2 performs mode switching in a preset period of 5 seconds to read the communication signal or the control signal on the microphone audio line 3. When the communication data is read, the switching mode is stopped, the string of communication data is continuously read, and the AD mode is stopped when the key voltage value uploaded by the drive-by-wire circuit 5 is received. If the IO port 2 is uploading data to the microphone audio line 3, the key voltage value uploaded by the line control circuit 5 is detected, at this time, the voltage value on the IO port 2 of the main control chip 1 is reduced due to the control signal uploaded by the line control circuit 5, the high potential cannot be normally recognized, the communication signal cannot be received, the mode can be continuously switched for 5 seconds, the key voltage value on the microphone audio line 3 can be read when the mode is switched to the AD mode, and if a certain predetermined voltage value is recognized, a corresponding control instruction can be executed. After the wire control circuit 5 stops uploading the control signal, that is, after the key is released, because the transmission signal of the main control chip 1 is provided with a retransmission mechanism, when the wire control circuit 5 uploads the control signal, that is, when the key is pressed down, the data which is not completely transmitted will continue to be retransmitted until a success instruction is returned.

The embodiment of the utility model provides an in, still including loudspeaker 8, the connection that is used for playing audio signal main control chip 1 with loudspeaker 8's loudspeaker line 9, be used for the power cord 10 of giving from the power supply of control chip 4. This enables the conversion of the headphone audio signal into sound.

In the embodiment of the utility model, the utility model discloses an in the main control chip 1 and from only having IO port 2 and AD mode and the two kinds of reading modes circulation switching realization communications of AD mode and IO mode that have the AD function through one in the microphone audio line 3, the main control chip 1 between the control chip 4. Therefore, the main control chip 1 can transmit communication signals to the microphone audio line 3 through the IO port 2, and can also receive communication signals and control signals on the microphone audio line 3 through the IO port 2, so that information interaction is realized with the slave control chip 4, and the earphone can be controlled to realize multiple functions. The utility model provides a current earphone realize that a plurality of functions need many sinle silks to carry out the communication, and then cause problem with high costs.

Example two

As shown in fig. 1 to 4, the system further includes a functional module, and the functional module is in communication connection with the slave control chip 4. The functional module comprises one or more signal acquisition units, the signal acquisition units are connected with the slave control chip 4 and communicate with the master control chip 1 through the slave control chip 4 and the microphone audio line 3.

The signal acquisition unit can acquire signals such as vibration, gestures, directions, ideas (biological electric waves) and touch, and can be used for controlling volume up/volume down, previous/next music, pause/play and the like of the earphone. The signal acquisition unit may include one or more of a vibration signal acquisition unit, a gesture signal acquisition unit, a direction signal acquisition unit, a meaning signal acquisition unit, and a touch signal acquisition unit. The signal acquisition units are connected with a slave control chip 4 and are communicated with a master control chip 1 through the slave control chip 4 and a microphone audio line 3. It should be noted that, the main control module encodes an instruction signal corresponding to the signal acquisition unit, and when the signal acquisition unit communicates with the main control chip 1, the main control chip 1 can execute the instruction signal corresponding to the signal acquisition unit as long as it reads the signal transmitted by the signal acquisition unit on the microphone audio line 3.

Specifically, above-mentioned vibration signal acquisition unit can be vibration sensor, can be the signal of telecommunication with the parametric conversion of vibration, transmit main control chip 1 through from control chip 4 and microphone audio line 3, match this signal of telecommunication by main control chip 1, the corresponding command signal is gone out in the matching, for example when the user wears the earphone and clicks the head, vibration sensor will click the vibration parameter conversion signal of telecommunication that produces, transmit to main control chip 1 back, match the command signal of cutting the song, will send the instruction of cutting the song to the host computer. The above-mentioned azimuth signal acquisition unit can be the azimuth sensor, can be the signal of telecommunication with the parameter conversion of earth magnetism, transmit main control chip 1 through from control chip 4 and microphone audio line 3, match this signal of telecommunication by main control chip 1, the corresponding command signal of matching out, for example, when the user twists one's head left, the azimuth sensor converts the earth magnetism parameter into the signal of telecommunication, transmit to main control chip 1 back through from control chip 4 and microphone audio line 3, match the command signal to the left turn visual angle, will send the instruction to the host computer to the left turn visual angle, make the picture of host computer screen to the left turn. Similarly, the touch signal acquisition unit, the gesture signal acquisition unit, the idea signal acquisition unit, and the like may also refer to the above examples. The idea signal acquisition unit can be a biological electric wave acquisition device, can acquire brain waves, amplifies the brain waves through an operational amplifier to form electric signals, and transmits the electric signals to the main control chip 1 to match with corresponding instruction signals.

Further, the functional module includes: and the function prompting unit 6 is connected with the slave control chip 4.

The function prompt unit 6 may be a light prompt element, such as an LED lamp, for prompting the function status of the current operation. The number and color of the LED lamps can be set according to the need, for example, when the user performs the volume adding operation, the LED lamps emit red light; if the user executes the volume reduction operation, the LED lamp emits blue light; if the user executes the playing operation, the LED lamp emits green light; if the user executes the pause operation, the LED lamp emits yellow light and the like. The function prompting unit 6 may also be a sound prompting unit 6, such as a speaker, a loudspeaker, etc., for prompting the user to currently operate the corresponding function. For example, when the user presses a volume up key, the sound presentation unit 6 emits a sound such as "up volume". The functional module also comprises a prompting resistor 7 connected between the power supply and the prompting unit 6. The number of the prompting resistors 7 is the same as that of the prompting units 6.

In a possible embodiment, the slave chip 4 may also be provided with an IO port 2 having an AD function. The IO port 2 can also communicate with the main control chip 1. The IO port 2 may also include an AD mode and an IO mode, and may also perform mode switching at a preset period. Specifically, the signals of the information acquisition units can be monitored through the AD mode of the IO port 2 of the slave control chip 4, and then converted into control signals, and the control signals are uploaded to the master control chip 1 through the slave control chip 4 and the microphone audio line 3, so as to execute corresponding instruction information. Communication signals on the microphone audio line 3 can also be monitored through the IO mode of the IO port 2 of the control chip 4, or control signals on the microphone audio line 3 are monitored, and then the prompt unit 6 is controlled to prompt.

In the embodiment of the utility model, the utility model discloses an in the main control chip 1 and from only having IO port 2 and AD mode and the two kinds of reading modes circulation switching realization communications of AD mode and IO mode that have the AD function through one in the microphone audio line 3, the main control chip 1 between the control chip 4. The main control chip 1 can transmit communication signals to the microphone audio line 3 through the IO port 2, and can also receive communication signals and control signals on the microphone audio line 3 through the IO port 2, so as to realize information interaction with the slave control chip 4, and thus, the earphone can be controlled to realize multiple functions. In addition, besides the basic control function of controlling the earphone through the line control circuit 5 and the main control chip 1, more multifunctional control can be realized through the slave control chip 4 and the signal acquisition unit connected with the slave control chip 4, and each function realized by the slave control chip 4 is also realized by communicating with the main control chip 1 through the same microphone audio line 3. The utility model provides a current earphone realize that a plurality of functions need many sinle silks, and then cause problem with high costs.

In another embodiment, a USB gaming headset is also provided; a USB gamepad; a digital massage chair; an audio conference call; a wired telephone; active sound, and the like, and provides a USB game headset; a USB gamepad; a digital massage chair; an audio conference call; a wired telephone; the active sound equipment is provided with the earphone signal communication circuit in the embodiment, and has the functions and effects of the earphone signal communication circuit provided by the embodiment. And will not be described in detail herein.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A headset signal communication circuit, comprising: the earphone comprises a microphone audio line, a master control chip arranged at a master control end, a slave control chip arranged in an earphone shell and a line control circuit arranged on the microphone audio line, wherein the master control chip is in communication connection with the slave control chip through the microphone audio line; the main control chip is provided with an IO port with an AD function, and an AD mode and an IO mode are provided to carry out circular switching in a preset period.

2. The headset signal communication circuit of claim 1, wherein the main control chip reads a communication signal on a microphone audio line through an IO mode on an IO port or transmits a communication signal to the microphone audio line.

3. The headset signal communication circuit of claim 1, wherein the main control chip is a single chip.

4. The headset signal communication circuit of claim 1, wherein the slave control chip is a single chip.

5. The headset signal communication circuit of claim 1, wherein the drive-by-wire circuit comprises one or more function buttons, one or more voltage dividing resistors corresponding to the function buttons.

6. The earphone signal communication circuit according to claim 5, wherein the voltage-dividing resistor is connected to the microphone audio line for inputting a control signal corresponding to the function to the microphone audio line.

7. The headset signal communication circuit of claim 6, wherein the main control chip reads the control signal through an AD mode on an IO port.

8. The headset signal communication circuit of claim 1, further comprising a functional module, wherein the functional module is communicatively coupled to the slave control chip.

9. The headset signal communication circuit of claim 8, wherein the functional module comprises one or more signal acquisition units, the signal acquisition units are connected to the slave control chip and communicate with the master control chip through the slave control chip and the microphone audio line.

10. The headset signal communication circuit of claim 8, wherein the functional module comprises: and the function prompting unit is connected with the slave control chip.