Silencing drive circuit, noise reduction system, socket and broadcasting equipment

Abstract

This invention discloses a mute drive circuit, a noise reduction system, a socket, and an audio broadcasting device. The mute drive circuit is applied to a socket and includes: a status detection module electrically connected to an external power source, used to detect the connection status between the socket and the plug, and generate a connection status signal based on the connection status; and a switch module electrically connected to both the status detection module and the mute working circuit, used to control the operating state of the mute working circuit based on the connection status signal. The mute drive circuit of this invention sends the socket's connection status signal to the switch module through the status detection module. The switch module turns on or off according to the connection status signal, thereby controlling the mute working circuit to start operating when the plug is inserted or removed from the socket. This avoids the problem of noise generated by the audio broadcasting device when the external audio source plug is inserted or removed, improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of noise reduction circuit technology, and in particular to a silent drive circuit, a noise reduction system, a socket, and a broadcasting device. Background Technology

[0002] In related technologies, noise is generated when an external audio source plug is inserted into or unplugged from the socket of the broadcasting equipment, which affects the user experience. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a mute drive circuit that can suppress noise generation when an external audio source plug is inserted into or unplugged from the socket of an audio broadcasting device.

[0004] The present invention also proposes a noise reduction system having the above-mentioned silent drive circuit, a socket having the above-mentioned noise reduction system, and a broadcasting device having the above-mentioned socket.

[0005] A mute drive circuit according to a first aspect of the present invention is applied to a socket, the mute drive circuit comprising:

[0006] A status detection module is electrically connected to an external power source. The status detection module is used to detect the connection status between the socket and the plug, and generate a connection status signal based on the connection status.

[0007] A switch module is provided, which is used to electrically connect to the status detection module and the silent working circuit respectively, and to control the working state of the silent working circuit according to the connection status signal.

[0008] The silent operation circuit is used for silent operation.

[0009] The mute drive circuit according to an embodiment of the present invention has at least the following beneficial effects: the circuit detects the connection status of the socket through the status detection module and generates a corresponding connection status signal. The switch module receives the connection status signal. When the connection status signal indicates that the external audio source plug is being inserted into or removed from the socket, the switch module is turned on, thereby controlling the mute working circuit to start executing the circuit mute operation, thereby avoiding the problem of noise generated by the broadcasting equipment when the external audio source plug is inserted or removed, and improving the user experience.

[0010] According to some embodiments of the present invention, the switching module includes:

[0011] A voltage-controlled current element, wherein the emitter of the voltage-controlled current element is used for electrical connection to an external power supply;

[0012] A first resistor, one end of which is used to be electrically connected to the emitter of the voltage control current element and an external power supply respectively, and the other end of which is used to be electrically connected to the state detection module;

[0013] The second resistor has one end for electrical connection to the base of the state detection module and the voltage control current element, respectively, and the other end for grounding.

[0014] The third resistor has one end for electrical connection to the collector of the voltage control current element and the other end for electrical connection to the silent working circuit.

[0015] According to some embodiments of the present invention, the socket includes an interface unit, a first pin of the interface unit being electrically connected to a left channel input terminal, a second pin of the interface unit being electrically connected to a right channel input terminal, and a third pin of the interface unit being electrically connected to a microphone input terminal;

[0016] The status detection module includes a detection unit. The first port of the detection unit is used to be electrically connected to the switch module. The second port and the third port of the detection unit are used to be electrically connected to the external power supply. The fourth port of the detection unit is used to be electrically connected to the first pin of the interface unit.

[0017] According to some embodiments of the present invention, the switching module further includes:

[0018] The fourth resistor has one end for electrical connection to the collector of the voltage control current element and one end of the second resistor, and the other end of the fourth resistor is grounded.

[0019] A first capacitor, one end of which is used to be electrically connected to the collector of the voltage-controlled current element and one end of the second resistor, respectively, and the other end of the first capacitor is used to be grounded.

[0020] According to some embodiments of the present invention, the voltage-controlled current element includes any one of a transistor and a field-effect transistor.

[0021] A noise reduction system according to a second aspect of the present invention includes:

[0022] The silent drive circuit according to the first aspect embodiment of the present invention;

[0023] A mute operating circuit is provided, which is electrically connected to the mute driving circuit, the left channel input terminal, the right channel input terminal and the microphone input terminal respectively.

[0024] The noise reduction system according to the embodiments of the present invention has at least the following beneficial effects: by employing the above-mentioned silent drive circuit, the noise reduction system avoids the problem of noise generated by the broadcasting equipment when the external audio source plug is inserted or unplugged.

[0025] A socket according to a third aspect embodiment of the present invention includes a noise reduction system according to the second aspect embodiment described above.

[0026] The socket according to an embodiment of the present invention has at least the following beneficial effects: by employing the above-described noise reduction system, the socket avoids the problem of noise generated when the external audio source plug is inserted or unplugged from the broadcasting equipment.

[0027] A broadcasting device according to a fourth aspect of the present invention includes a socket according to the third aspect of the present invention described above.

[0028] The broadcasting device according to the embodiments of the present invention has at least the following beneficial effects: by adopting the above-mentioned socket, the broadcasting device avoids the problem of noise generated when the external audio source plug is inserted or unplugged from the socket, thereby improving the user experience.

[0029] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0031] Figure 1 This is a module block diagram of a specific embodiment of the silent drive circuit of the present invention;

[0032] Figure 2 This is a circuit diagram of a specific embodiment of the silent drive circuit of the present invention.

[0033] Figure label:

[0034] Status detection module 100, switch module 200, external power supply 300, silent working circuit 400, socket 500, plug 600, detection unit 110, interface unit 510. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0037] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] In the description of this invention, unless otherwise explicitly defined, terms such as setting, installing, connecting, and electrical connection should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0039] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] like Figure 1 As shown, a silent driving circuit according to an embodiment of the present invention is applied to a socket. The silent driving circuit includes a status detection module 100 and a switch module 200. The status detection module 100 is electrically connected to an external power supply 300 and is used to detect the connection status between the socket and the plug, and generate a connection status signal according to the connection status. The switch module 200 is electrically connected to both the status detection module 100 and the silent working circuit 400, and is used to control the working state of the silent working circuit 400 according to the connection status signal. The silent working circuit 400 is used to perform a silent operation.

[0041] Specifically, the status detection module 100 first detects the connection status of the socket and generates a corresponding connection status signal based on the connection status. The switch module 200 receives the connection status signal. When the connection status signal indicates that the external audio source plug is not inserted into the socket or is fully inserted into the socket, the switch module 200 is turned off, and the mute circuit 400 does not work. When the connection status signal indicates that the external audio source plug is being inserted into or removed from the socket, the switch module 200 is turned on, thereby controlling the mute circuit 400 to start executing the circuit mute operation.

[0042] According to the mute drive circuit of the present invention, the status detection module 100 detects the connection status of the socket and generates a corresponding connection status signal. The switch module 200 receives the connection status signal. When the connection status signal indicates that the external audio source plug is being inserted into or removed from the socket, the switch module 200 is turned on, thereby controlling the mute working circuit 400 to start the circuit mute operation, thereby avoiding the problem of noise generated by the broadcasting equipment when the external audio source plug is inserted or removed, and improving the user experience.

[0043] like Figure 2 As shown, in some specific embodiments of the present invention, the switching module 200 includes: a voltage-controlled current element Q1, a first resistor R1, a second resistor R2, and a third resistor R3. The emitter of the voltage-controlled current element Q1 is used for electrical connection to a power supply; one end of the first resistor R1 is used for electrical connection to the emitter of the voltage-controlled current element Q1 and the power supply, and the other end of the first resistor R1 is used for electrical connection to the status detection module 100; one end of the second resistor R2 is used for electrical connection to the status detection module 100 and the base of the voltage-controlled current element Q1, and the other end of the second resistor R2 is grounded; one end of the third resistor R3 is used for electrical connection to the collector of the voltage-controlled current element Q1, and the other end of the third resistor R3 is used for electrical connection to the silent working circuit 400.

[0044] Specifically, when the status detection module 100 detects that the plug 600 is not inserted or the plug 600 is fully inserted into the socket 500, the base of the voltage control element Q1 is at a low level, the voltage control element Q1 is not conducting, the external power supply 300 cannot supply power to the silent working circuit 400, so the silent working circuit 400 does not work; when the status detection module 100 detects that the plug 600 is in the state of being inserted into or removed from the socket 500, the base voltage of the voltage control element Q1 is pulled high, the voltage control element Q1 is conducting, the external power supply 300 can supply power to the silent working circuit 400, and the silent working circuit 400 starts to work.

[0045] like Figure 2 As shown, in some specific embodiments of the present invention, the socket 500 includes an interface unit 510, and the first pin of the interface unit 510 (e.g., Figure 2The "1" pin in the interface unit 510 is electrically connected to the left channel input terminal SINGAL1, and the second pin of the interface unit 510 (such as...) Figure 2 The "2" pin in the interface unit 510 is electrically connected to the right channel input terminal SINGAL2, and the third pin (e.g., ...) is connected to the right channel input terminal SINGAL2. Figure 2 The “3” pin in the signal is electrically connected to the microphone input terminal SINGAL3; the status detection module 100 includes a detection unit 110, and the first port of the detection unit 110 (e.g., pin 3) is electrically connected to the microphone input terminal SINGAL3; Figure 2 Pin "4" in the diagram is used for electrical connection with the switch module 200, and the second port of the detection unit 110 (e.g., ...) is used for electrical connection with the second port of the detection unit 110. Figure 2 Pin "5" in the code) and the third port of the detection unit 110 (e.g., pin "5") and the third port of the detection unit 110 (e.g., pin "5" in the code) Figure 2 Pin "6" in the code is used for electrical connection to the external power supply 300, and the fourth port of the detection unit 110 (e.g., ...) is used for connection to the external power supply 300. Figure 2 The "7" pin is used for electrical connection with the first pin of the interface unit 510.

[0046] Specifically, when the detection unit 110 detects through its fourth port that the plug 600 is not inserted into the socket 500, the first port and the second port of the detection unit 110 are in a closed state. At this time, the first resistor R1 is short-circuited, and the current supplied by the external power supply 300 flows directly from the second resistor R2 to the ground wire, and the base of the voltage control element Q1 is in a low-level state. When the detection unit 110 detects through its fourth port that the plug 600 is being inserted into or removed from the socket 500, the first port and the second port of the detection unit 110 are in an open state. The first port and the third port of the detection unit 110 are also disconnected. At this time, the external power supply 300 directly supplies power to the base of the voltage control element Q1, the base voltage of the voltage control element Q1 is pulled high, and the voltage control element Q1 is turned on. When the detection unit 110 detects that the plug 600 is fully inserted into the socket 500 through the fourth port of the detection unit 110, the first port and the third port of the detection unit 110 are closed. At this time, the first resistor R1 is short-circuited, and the current provided by the external power supply 300 flows directly from the second resistor R2 to the ground wire. The base of the voltage control element Q1 is in a low-level state.

[0047] like Figure 2 As shown, in some specific embodiments of the present invention, the switch module 200 further includes a fourth resistor R4 and a first capacitor C1. One end of the fourth resistor R4 is used to be electrically connected to the collector of the voltage-controlled current element Q1 and one end of the second resistor R2, respectively, and the other end of the fourth resistor R4 is used to be grounded; one end of the first capacitor C1 is used to be electrically connected to the collector of the voltage-controlled current element Q1 and one end of the second resistor R2, respectively, and the other end of the first capacitor C1 is used to be grounded.

[0048] Specifically, the fourth resistor R4 and the first capacitor C1 are connected in parallel. One end of the fourth resistor R4 and the first capacitor C1 is electrically connected to the base of the voltage control current element Q1, and the other end of the fourth resistor R4 and the first capacitor C1 is grounded.

[0049] like Figure 2 As shown, in some specific embodiments of the present invention, the voltage control current element Q1 includes any one of a transistor and a field-effect transistor.

[0050] Specifically, the voltage control element Q1 can be a PNP transistor, model 2N3906. It can be understood that the type and model of the voltage control element Q1 can be selected adaptively according to actual needs.

[0051] like Figure 2 As shown, in a specific embodiment, when the detection unit 110 passes through the fourth port of the detection unit 110 (e.g., Figure 2 When the "7" pin in the detection unit 110 detects that the plug 600 is not inserted into the socket 500, the first port (e.g., pin 7) of the detection unit 110 detects that the plug 600 is not inserted into the socket 500. Figure 2 Pin "4" in the diagram) and the second port of the detection unit 110 (e.g., pin "4") ... Figure 2 When the "5" pin is closed, the first resistor R1 is short-circuited, and the current supplied by the external power supply 300 flows directly from the second resistor R2 to the ground. The base of the voltage control element Q1 is in a low-level state, so the voltage control element Q1 is in a turned-off state. The silent working circuit 400 does not work because there is no power supply.

[0052] When the fourth port of the detection unit 110 detects that the plug 600 is being inserted into the socket 500, the connection between the first port and the second port of the detection unit 110 is broken, and the connection between the first port and the third port of the detection unit 110 (e.g., ...) is broken. Figure 2 The connection between pin "6" and the external power supply 300 is also disconnected. At this time, the external power supply 300 directly supplies power to the base of the voltage control element Q1, the base voltage of the voltage control element Q1 is pulled high, the voltage control element Q1 is turned on, the silent working circuit 400 is powered on and starts to work.

[0053] After the detection unit 110 detects that the plug 600 is fully inserted into the socket 500 through the fourth port of the detection unit 110, the first port of the detection unit 110 and the third port of the detection unit 110 are closed, the first resistor R1 is short-circuited again, the base of the voltage control element Q1 returns to the low level state, the voltage control element Q1 is turned off, and the silent working circuit 400 stops working due to no power supply. Thus, the silent driving circuit of this embodiment completes the silent operation of the plug 600 being inserted into the socket 500.

[0054] In this embodiment, the mute operation of the plug 600 being pulled out of the socket 500 is the opposite of the mute operation of the plug 600 being inserted into the socket 500. When the fourth port of the detection unit 110 detects that the plug 600 is being pulled out of the socket 500, the connection between the first port and the third port of the detection unit 110 is broken, and the connection between the first port and the second port of the detection unit 110 is also broken. At this time, the external power supply 300 directly supplies power to the base of the voltage control element Q1, the base voltage of the voltage control element Q1 is pulled high, the voltage control element Q1 is turned on, and the mute working circuit 400 is powered on and starts to work. After the detection unit 110 detects that the plug 600 is fully inserted into the socket 500 through the fourth port of the detection unit 110, the first port of the detection unit 110 and the second port of the detection unit 110 are closed, the first resistor R1 is short-circuited, the base of the voltage control current element Q1 returns to the low level state, the voltage control current element Q1 is turned off, and the silent working circuit 400 stops working due to no power supply. Thus, the silent driving circuit of this embodiment completes the silent operation of the plug 600 being pulled out of the socket 500.

[0055] This invention also provides a noise reduction system, including a mute operating circuit and a mute driving circuit as described in any of the above embodiments. The mute operating circuit is electrically connected to the mute driving circuit, the left channel input terminal, the right channel input terminal, and the microphone input terminal, respectively.

[0056] According to the noise reduction system of the present invention, by employing the above-described mute drive circuit, the problem of noise generated by the broadcasting equipment when the external audio source plug is inserted or unplugged is avoided.

[0057] This invention also provides a socket including a noise reduction system as described in any of the above embodiments.

[0058] According to the socket of the present invention, by employing the above-described noise reduction system, the problem of noise generated by the broadcasting equipment when the external audio source plug is inserted into or unplugged from the socket is avoided.

[0059] This invention also provides a broadcasting device, including a socket as described in any of the above embodiments.

[0060] According to the present invention, the broadcasting device, by adopting the above-mentioned socket, avoids the problem of noise generated by the broadcasting device when the external audio source plug is inserted or unplugged from the socket, thereby improving the user experience.

[0061] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A silent driving circuit, characterized in that, The silent drive circuit, applied to a socket, includes: A status detection module is electrically connected to an external power source. The status detection module is used to detect the connection status between the socket and the plug, and generate a connection status signal based on the connection status. A switch module is provided, which is used to electrically connect to the status detection module and the silent working circuit respectively, and to control the working state of the silent working circuit according to the connection status signal. The silent operation circuit is used for silent operation; The socket includes an interface unit, a first pin of which is electrically connected to the left channel input terminal, a second pin of which is electrically connected to the right channel input terminal, and a third pin of which is electrically connected to the microphone input terminal. The status detection module includes a detection unit. The first port of the detection unit is used to be electrically connected to the switch module. The second port and the third port of the detection unit are used to be electrically connected to the external power supply. The fourth port of the detection unit is used to be electrically connected to the first pin of the interface unit. Specifically, when the detection unit detects through its fourth port that the plug is not inserted into the socket, the first port and the second port of the detection unit are in a closed state; when the fourth port detects that the plug is being inserted into or removed from the socket, the first port and the second port are in a disconnected state, and the first port and the third port of the detection unit are also in a disconnected state; when the fourth port detects that the plug is fully inserted into the socket, the first port and the third port are in a closed state. The step of controlling the operating state of the silent working circuit according to the connection status signal includes: When the connection status signal indicates that the plug is not inserted into the socket, the switch module is turned off, and the silent working circuit is in a non-working state. When the connection status signal indicates that the plug is being inserted into or removed from the socket, the switch module is turned on, and the silent working circuit is in working state. When the connection status signal indicates that the plug is fully inserted into the socket, the switch module is turned off, and the silent working circuit is in a non-working state.

2. The silent driving circuit according to claim 1, characterized in that, The switching module includes: A voltage-controlled current element, wherein the emitter of the voltage-controlled current element is used for electrical connection to an external power supply; A first resistor, one end of which is used to be electrically connected to the emitter of the voltage control current element and an external power supply respectively, and the other end of which is used to be electrically connected to the state detection module; The second resistor has one end for electrical connection to the base of the state detection module and the voltage control current element, respectively, and the other end for grounding. The third resistor has one end for electrical connection to the collector of the voltage control current element and the other end for electrical connection to the silent working circuit.

3. The silent driving circuit according to claim 2, characterized in that, The switching module also includes: The fourth resistor has one end for electrical connection to the collector of the voltage control current element and one end of the second resistor, and the other end of the fourth resistor is grounded. A first capacitor, one end of which is used to be electrically connected to the collector of the voltage-controlled current element and one end of the second resistor, respectively, and the other end of the first capacitor is used to be grounded.

4. The silent driving circuit according to claim 2, characterized in that, The voltage-controlled current element includes any one of a transistor or a field-effect transistor.

5. A noise reduction system, characterized in that, include: The silent drive circuit as described in any one of claims 1 to 4; A mute operating circuit is provided, which is electrically connected to the mute driving circuit, the left channel input terminal, the right channel input terminal and the microphone input terminal respectively.

6. A socket, characterized in that, Including the noise reduction system as described in claim 5.

7. A broadcasting device, characterized in that, Including the socket as described in claim 6.

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