CN113645545B - External sound card - Google Patents
External sound card Download PDFInfo
- Publication number
- CN113645545B CN113645545B CN202110750421.6A CN202110750421A CN113645545B CN 113645545 B CN113645545 B CN 113645545B CN 202110750421 A CN202110750421 A CN 202110750421A CN 113645545 B CN113645545 B CN 113645545B
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- Prior art keywords
- circuit board
- sound card
- power
- power supply
- light
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
Abstract
The invention provides an external sound card and a battery; the power supply circuit board is provided with a power supply management unit and is electrically connected with the battery; the sound card circuit board is provided with a sound processing unit and is electrically connected with the power supply circuit board; the charging interface is arranged between the power circuit board and the sound card circuit board and is electrically connected with the power circuit board; the data transmission interface is arranged between the power circuit board and the sound card circuit board and is electrically connected with the power circuit board; the data transmission interface comprises a power terminal and a data terminal, wherein the power terminal is electrically connected with the power circuit board so as to charge external electronic equipment; the data terminal is electrically connected with the sound card circuit board so as to carry out audio data interaction. The external sound card provided by the invention can charge external electronic equipment while live broadcasting, and has rich functions.
Description
Technical Field
The invention relates to the field of audio signal processing, in particular to an external sound card.
Background
As live campaigns become more popular and enjoyed by people, people's expectations and demands for live broadcast are also becoming higher.
In the prior art, a sound device for assisting electronic equipment such as a mobile phone, a tablet computer and the like to carry out live broadcast exists; the sound devices can process the audio signals corresponding to the sound to obtain sound effects which meet the expectations of users, for example, the sound input by the microphone can be transmitted to a listener through a mobile phone after being subjected to sound effect processing, and meanwhile, certain sound effects can be added to the sound after the sound effect processing to improve entertainment; however, when a user live broadcast is performed by the existing sound device, the situation that the electronic equipment is exhausted and cannot perform live broadcast often occurs.
Disclosure of Invention
Based on the above-mentioned current situation, a main object of the present invention is to provide an external sound card, which can charge an external electronic device while live broadcasting.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: an external sound card comprising: a battery; the power supply circuit board is provided with a power supply management unit and is electrically connected with the battery; the sound card circuit board is provided with a sound processing unit and is electrically connected with the power supply circuit board; the charging interface is arranged between the power circuit board and the sound card circuit board and is electrically connected with the power circuit board; the data transmission interface is arranged between the power circuit board and the sound card circuit board; the data transmission interface comprises a power terminal and a data terminal, wherein the power terminal is electrically connected with the power circuit board so that the power management unit can charge external electronic equipment connected to the data transmission interface through the power terminal; the data terminal is electrically connected with the sound card circuit board, so that the sound processing unit can perform audio data interaction with external electronic equipment connected to the data transmission interface through the data terminal.
Preferably, the power supply management unit comprises a power supply path circuit, a charging path circuit and a discharging path circuit, and the charging interface is connected with the power supply terminal and the sound card circuit board through the power supply path circuit; the charging interface is connected with the battery through the charging path circuit; the battery is connected with the charging interface, the power supply terminal and the sound card circuit board through the discharging path circuit.
Preferably, the external sound card further comprises a power supply output control end for controlling the sound card circuit board to be turned on or turned off, when the power supply output control end receives a first control signal, the power management unit controls the sound card circuit board to be turned on according to the first control signal, and the charging equipment connected to the charging interface supplies power to external electronic equipment connected to the sound card circuit board, the battery and the data transmission interface, or the battery supplies power to the sound card circuit board, the charging interface and the electronic equipment on the data transmission interface; and when the power supply output control end receives a second control signal, the second control signal controls the sound card circuit board to be closed.
Preferably, the power circuit board further includes a power supply output terminal connected to the discharge path circuit and the power supply path circuit, and the power supply terminal of the data transmission interface and the data transmission interface are connected to the power supply output terminal to obtain electric energy in a normal charging mode.
Preferably, a secondary discharge path circuit is arranged between the battery and the charging interface, and the battery can provide quick charging or common charging for external electronic equipment connected to the charging interface.
Preferably, an adapter wire is connected to the data transmission interface, one end of the adapter wire is connected with the data transmission interface, and the other end of the adapter wire is a lighting male head and a type-c male head which are electrically connected with external electronic equipment; the power circuit board is provided with a USB detection circuit which is used for detecting the access of the type-c interface type electronic equipment on the transfer line; the sound card circuit board is provided with a DSP chip and a LAM module, the LAM module is connected to the DSP chip and is at least used for detecting the access of the lighting interface type electronic equipment on the transfer line.
Preferably, a first connector and a second connector are respectively arranged on the opposite side surfaces of the data transmission interface and the power circuit board, and the data transmission interface and the power circuit board are electrically connected through the first connector and the second connector; the sound card circuit board comprises a DSP chip and a LAM module, the DSP chip is connected with the LAM module, and the data terminals carry out audio data interaction through the first connector, the second connector, the LAM module and the DSP chip; the power circuit board supplies power to the DSP chip through the first connector and the second connector.
Preferably, the external sound card comprises a plurality of audio interfaces electrically connected with the sound card circuit board; the charging interface, the data transmission interface, the plurality of audio interfaces, the battery, the sound card circuit board and the power supply circuit board are accommodated in the accommodating space; the sound card circuit board is fixed on the rear shell and covers the opening, and the charging interface, the data transmission interface, the battery and the power circuit board are limited between the sound card circuit board and the rear shell; the inside first baffle and the second baffle of being provided with of backshell, first baffle with the second baffle will the backshell internal partition has become first space, second space and third space along its plane extending direction, the second space is located first space with between the third space, power supply circuit board holds in the first space, the battery holds in the second space, a plurality of audio interfaces hold in the third space.
Preferably, the external sound card comprises a front shell and a rear shell, wherein the rear shell and the front shell are connected to form an accommodating space, and the charging interface, the data transmission interface, the plurality of audio interfaces, the battery, the sound card circuit board and the power supply circuit board are accommodated in the accommodating space; the light-transmitting cover plate is also included; the front shell is provided with a first area and a second area, the first area is provided with a containing groove, the light-transmitting cover plate is contained in the containing groove, and the light-transmitting cover plate is fixedly connected with the front shell through a pasting structure and/or a clamping structure; the outer surface of the light-transmitting cover plate is in smooth transition with the second area; the area ratio of the first region to the second region is (0.3-1.7): 1.
Preferably, a light hole is formed in the first area of the front shell, and a light emitting element is arranged at a position of the sound card circuit board corresponding to the light hole; the external sound card further comprises a light homogenizing sheet and a light transmitting piece, wherein the light homogenizing sheet is arranged in the light transmitting hole and/or the accommodating groove; the light-transmitting piece is arranged on the surface of the sound card circuit board, on which the light-emitting elements are arranged, and comprises a plurality of light-isolating strips, wherein adjacent light-emitting elements are isolated by the light-isolating strips, and light emitted by the light-emitting elements is emitted from between the adjacent light-isolating strips.
The external sound card provided by the invention is internally provided with the battery, the data transmission interface is provided with the data terminal and the power terminal, the power terminal can obtain electric energy from the battery through the power circuit board, and can also obtain electric energy from external charging equipment on the charging interface through the power circuit board, meanwhile, audio data interaction can be carried out through the data terminal and the sound card circuit board, namely, the external sound card can support the electronic equipment to carry out live broadcast while carrying out charging, the function is rich, the practicability is good, and the problem that the live broadcast and the like cannot be continued due to insufficient electric quantity of the electronic equipment under the conditions such as outdoor live broadcast and the like of a user can be avoided. The circuit in the external sound card is distributed on the power circuit board and the sound card circuit board, the two circuit boards are relatively independent, and the data transmission interface and the charging interface are positioned between the two circuit boards, so that signal interference caused by electric signals generated by the power circuit board in work to audio signals processed on the sound card circuit board can be avoided, the charging and audio data transmission paths are short, the product structure is compact, the product volume is reduced, and the portability is improved.
Other advantages of the present invention will be set forth in the description of specific technical features and solutions, by which those skilled in the art should understand the advantages that the technical features and solutions bring.
Drawings
A preferred embodiment of an external sound card according to the present invention will be described below with reference to the accompanying drawings. In the figure:
fig. 1 and fig. 2 are schematic perspective views of an external sound card at different viewing angles according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an explosion structure of an external sound card according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a front shell of an external sound card according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of a rear housing of an external sound card according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an exploded view of a part of the components of the external sound card according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of an audio interface of an external sound card according to an embodiment of the invention;
FIG. 8 is a schematic perspective view of a fixing member according to an embodiment of the present invention;
FIG. 9 is a schematic diagram showing the matching structure of the audio interface of the external sound card and the fixing member according to the embodiment of the present invention;
FIG. 10 is a schematic diagram of a circuit module of an external sound card according to an embodiment of the invention;
Fig. 11 is a schematic diagram of a terminal configuration of a data transmission interface according to an embodiment of the present invention.
Reference numerals:
10. an external sound card; 12. a major surface; 12a, a display area; 12b, non-display area; 1201. a first key; 1202. a second key; 121. a first end face; 122. a second end face; 123. a first side; 1231. a third key; 124. a second side; 1241. a fourth key; 11. a front shell; 11a, a first region; 110. a receiving groove; 111. a first light hole; 112. a second light hole; 113. a third light hole; 114. a mounting hole; 115. a key hole; 13. a rear case; 130. an opening; 134. a first separator; 135. a second separator; 131. a first space; 132. a second space; 133. a third space; 136. a bayonet; 137. a positioning strip; 14. a light-transmitting cover plate; 141. an adhesive layer; 15. a battery; 160. a buffer member; 16. an insulating layer; 17. a power circuit board; 18. a sound card circuit board; 181. a DSP chip; 180. an audio signal processing circuit; 182. a LAM module; 183. an LED; 184. pressing a key; 193. a charging interface; 194. a data transmission interface; 195. an audio interface; 196. a button; 20. a fixing member; 201. a cross bar; 202. a connecting strip; 203. a fixing ring; 204a, a first light homogenizing sheet; 204b, a second light homogenizing sheet; 205. a light transmitting member; 51. a power input; 52. a power supply output terminal; 53. a battery charging terminal; 54. a battery discharge end; 55. a power supply path circuit; 56. a charging path circuit; 57. a discharge path circuit; 58. a power supply output control end; 59. control keys.
Detailed Description
The present invention is described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in order to avoid obscuring the present invention, and in order to avoid obscuring the present invention, well-known methods, procedures, flows, and components are not presented in detail.
Moreover, those of ordinary skill in the art will appreciate that the drawings are provided herein for illustrative purposes and that the drawings are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Referring to fig. 1 and 2, an embodiment of the present invention provides an external sound card 10, where the external sound card 10 is connected with a microphone and an electronic device (such as a mobile phone, a tablet computer, etc.) for network live broadcasting or K songs, etc. Taking network live broadcast as an example, a voice signal input by a user from a microphone is subjected to signal processing by the external sound card 10 and then transmitted to electronic equipment, and the electronic equipment can transmit the processed audio signal to a live broadcast audience and the like.
The external sound card 10 includes a main surface 12, a first end surface 121 (i.e., a top surface in the view of fig. 2), a second end surface 122 (i.e., a bottom surface in the view of fig. 1), and first and second side surfaces 123 and 124, the first and second end surfaces 121 and 122 being disposed opposite each other, and the first and second side surfaces 123 and 124 being disposed opposite each other.
The main surface 12 includes a display area 12a and a non-display area 12b, where the display area 12a may display LOGO, bluetooth identifier, electric quantity identifier, working mode of the external sound card 10, etc., and it is understood that the display content of the display area 12a is not limited, and different display contents may be set according to the requirement of the user.
The non-display area 12b is provided with a first key 1201 and a second key 1202, the first key 1201 is circular, the second key 1202 is annular, and the second key 1202 is arranged around the first key 1201 and is concentric with the first key 1201. The first key 1201 is a power key, the second key 1202 is a control function, and the second key 1202 is a field-controlled special effect key, which is up, down, left, right, and corresponds to four different additional sound effects of "applause", "how to play", "smiling", and "group smiling", respectively (it can be understood that the azimuth word mentioned in the present invention is a relative position in a designated view, but not an absolute position, and when the drawing is rotated 180 ° in the plane of the paper, the position word "up" should be changed into the position word "down") respectively corresponds to different control functions.
The first end face 121 is exposed to be provided with a first interface group, and as an embodiment, the first interface group includes a charging interface 193 and a data transmission interface 194, the charging interface 193 and the data transmission interface 194 are arranged side by side and on the same line, and as an embodiment, the charging interface 193 and the data transmission interface 194 are type-c female sockets or USB female sockets or lighting female sockets or Micro USB interfaces. The second end face 122 is provided with a second interface group, which as an embodiment includes a plurality of audio interfaces 195, and in the present invention, five audio interfaces 195 are provided, and as an embodiment, the five audio interfaces 195 are two microphone interfaces (5V or 48V), a headset interface, an accompaniment interface, and an analog live broadcast interface, respectively. The microphone interface can be connected with a microphone for a user to input sound, the headset interface is used for being inserted into a headset or an earphone to conduct live broadcast or monitoring and the like, the accompaniment interface can be connected with the electronic equipment to conduct accompaniment audio signal input, and the simulated live broadcast interface can be used for simulating live broadcast. As another embodiment, the five audio interfaces 195 are listening interfaces, a microphone interface, an accompaniment interface, a first direct broadcast interface and a second direct broadcast interface, and the earphone or the headset is inserted into the listening interfaces to perform direct broadcast and listening, the microphone interface may be connected to a microphone for inputting sound by a user, the accompaniment interface may be connected to an electronic device to perform input of accompaniment audio signals, and the first direct broadcast interface and the second direct broadcast interface may be connected to the electronic device to perform direct broadcast. The five audio interfaces 195 in the present invention are all 3.5mm audio interfaces 195.
The first side 123 is provided with two third keys 1231, the functions of the two third keys 1231 are respectively a microphone volume key and a bluetooth key, the second side 124 is provided with two fourth keys 1241, the functions of the two fourth keys 1241 are respectively a listening volume key and a scene key, the microphone volume connected with the microphone interface and the listening interface can be respectively adjusted through the microphone volume key and the listening volume key, the start and stop of the bluetooth function can be controlled through the bluetooth key, the working mode corresponding to an application scene such as a chat mode, a K song mode, a live broadcast mode or a custom mode can be controlled through the scene key, and the display area 12a displays the working mode of the external sound card 10 after the corresponding mode is selected through the keys.
It will be appreciated that the number of interfaces described above may be adjusted as desired, and the location is not limited, and may be set in a suitable location on the external sound card 10. The functions, the number and the positions of the keys are not limited, and the functions, the positions and the number can be adjusted according to the requirements.
Referring to fig. 4, the external sound card 10 includes a housing, specifically, the housing includes a front shell 11 and a rear shell 13, and the front shell 11 and the rear shell 13 form an accommodating space for accommodating part of components in the external sound card 10 through connection (e.g. fastening and bonding).
Referring to fig. 1, 3 and 4, the front shell 11 includes a first area 11a and a second area (i.e. a non-display area) corresponding to the display area 12a and the non-display area 12b, the first area 11a is provided with a receiving slot 110, the external sound card 10 further includes a transparent cover 14, the transparent cover 14 is received in the receiving slot 110, and the transparent cover 14 is fixedly connected with the front shell 11 through an adhering structure and/or a clamping structure, in the present invention, the adhering structure is an adhesive layer 141, and a surface of the transparent cover 14 close to the rear shell 13 is adhered in the receiving slot 110 through the adhesive layer 141. The clamping structure can be a clamping groove and a protrusion which are matched with each other, for example, the edge of the light-transmitting cover plate 14 is provided with a protrusion a, the edge of the groove is provided with a clamping groove b, and the protrusion a slides into the clamping groove b to form clamping connection. After the transparent cover plate 14 is fixed, the outer surface of the transparent cover plate 14 is in smooth transition with the non-display area 12b, the appearance of the product is optimized, the use experience of a user is optimized, the transparent cover plate 14 can be partially made into the display area 12a by combining the accommodating groove 110 with the pasting or clamping transparent cover plate 14 through the front shell 11, the whole main surface is not required to be made into the display area like the existing product, the cost of the product can be greatly reduced, the assembly difficulty is reduced, the maintenance and the replacement are easy when the transparent cover plate 14 is damaged, and the reduction of the display area 12a domain is also beneficial to improving the anti-falling performance of the product.
Referring to fig. 1 and fig. 3 to fig. 5, the front case 11 has a light hole (i.e. a light hole is formed in the bottom of the accommodating groove 110) formed in the first region 11a, and specifically includes a plurality of first light holes 111, a single second light hole 112 and a plurality of third light holes 113, and the first light holes 111, the second light holes 112 and the third light holes 113 penetrate through the front case 11. The plurality of first light holes 111 are used for assisting the display of the bluetooth identity and the power identity. The second light holes 112 are used for assisting the display of the LOGO of the product, and the third light holes 113 are used for assisting the display of the working mode. The front shell 11 is provided with a mounting hole 114, and a screw can pass through the mounting hole 114 to fix the front shell 11 on the rear shell 13. The second area of the front case 11 is provided with a key hole 115, and the key hole 115 allows the first key 1201 and the second key 1202 to pass through and be exposed on the main surface 12. The area ratio of the first region 11a and the second region is (0.3-1.7): 1, more preferably (0.25 to 0.5): 1.
the second light hole 112 has a relatively large size, and is provided with a first light homogenizing sheet 204a therein, and the first light homogenizing sheet 204a may be a PC sheet. The second light homogenizing sheet 204b is arranged in the accommodating groove 110 corresponding to the second light transmitting hole 112, the second light homogenizing sheet 204b can be light diffusing paper, and the light diffusing paper can be fixed at the bottom of the accommodating groove 110 through the adhesive layer 141, so that the light homogenizing device has the characteristics of convenience in installation, low cost and good light homogenizing effect.
Referring to fig. 5, a first partition 134 and a second partition 135 are disposed inside the rear case 13, and the rear case 13 is divided into a first space 131, a second space 132 and a third space 133 along a plane extending direction of the first partition 134 and the second partition 135, the second space 132 is located between the first space 131 and the third space 133, the first space 131 is located at an end portion of the first end face 121, and the third space 133 is located at an end portion of the second end face 122. Preferably, the external sound card 10 is rectangular parallelepiped, and the ratio of the first space 131 to the third space 133 in the height direction (Z direction) is 1: (0.8-1.2), under this parameter, the second space 132 may be centrally located, facilitating the overall weight balance of the product and improving the shatter-resistant performance of the product.
Referring to fig. 6, the external sound card 10 further includes a battery 15, a sound card circuit board 18, a power circuit board 17, a first connector and a second connector (not shown) disposed in a receiving space formed by connecting the front shell 11 and the rear shell 13, the power circuit board 17 for controlling charging and discharging of the battery 15 is disposed at one side of the sound card circuit board 18, the power circuit board 17 and the battery 15 are substantially parallel to the sound card circuit board 18, and it is understood that an included angle (acute angle) between the two is less than or equal to 10 °, preferably less than 2 °. The side of the sound card circuit board 18 opposite to the power circuit board 17 is provided with a first connector and a second connector, and the sound card circuit board 18 and the power circuit board 17 are electrically conducted through the first connector and the second connector. As an embodiment, the first connector and the second connector may be pin-arranging and bus-arranging matched with each other, and the pin-arranging and bus-arranging are spliced to realize electrical connection, and as another embodiment, the first connector and the second connector are bus-arranging and are connected through a bus.
In the mounted state, the power circuit board 17 is located in the first space 131, the battery 15 is located in the second space 132, and the plurality of audio interfaces 195 are located in the third space 133. A buffer layer (not shown) is provided between the battery 15 and the side wall of the rear case 13, and the buffer layer may be made of a material such as a silicone tape or EVA. The distance between the battery 15 and the side wall of the rear case 13 is greater than 1.5mm, and more preferably greater than or equal to 2mm. A crash bar (e.g., a silicone strip, not shown) is disposed between the battery 15 and the first and second separators 134, 135 so that the battery 15 is tightly secured in the second space 132, and the surface of the battery 15 remote from the sound card circuit board 18 and the rear case 13 are adhered and secured by a foam adhesive. The buffer layer, the anti-collision strip and the foam rubber can effectively protect the battery 15, so that other devices can be prevented from scratching the battery 15 to cause electrolyte leakage, and the anti-falling performance of the product can be improved.
With continued reference to fig. 3 and 6, the sound card circuit board 18 is provided with a light emitting element, specifically an LED183, where the light emitted by the LED183 passes through the first light hole 111, the second light hole 112 or the third light hole 113, so that the display area 12a displays a corresponding pattern. Specifically, the surface of the transparent cover plate 14 near the sound card circuit board 18 is provided with a pattern layer, the pattern layer defines a transparent area and a shielding area, the transmittance of light in the transparent area is high, and the transmittance of light in the shielding area is extremely low, so that when the LED183 emits light, the light passes through the transparent hole and the transparent area and the transparent cover plate 14, and the set pattern can be displayed. Because the display area 12a corresponding to the first light hole 111 is used for displaying the electric quantity and the bluetooth identifier, the control accuracy requirement of the display is relatively high, and in order to improve the display effect, the LED183 corresponding to the first light hole 111 is provided with the light-transmitting member 205, and the light-transmitting member 205 is of a net structure, that is, the light-transmitting member 205 comprises a plurality of light-isolating strips, the adjacent light-emitting elements are separated by the light-isolating strips, and the light emitted by the light-emitting elements passes through the space between the adjacent light-isolating strips and then is emitted.
With continued reference to fig. 1 and 6, the sound card circuit board 18 is further provided with a pressing key 184, where the pressing key 184 is set corresponding to the first key 1201, the second key 1202, the third key 1231 and the fourth key 1241, and when the user presses the corresponding keys, the pressing key 184 sends corresponding operation instructions to the sound card circuit board 18.
With continued reference to fig. 5, the rear housing 13 has an opening 130, the inner space of the rear housing 13 is communicated with the outside through the opening 130, the sound card circuit board 18 is fixed to the rear housing 13 by screwing and/or clamping, etc. and covers the opening 130, and the charging interface, the data transmission interface 194, the battery 15, the power circuit board 17, the first connector and the second connector are limited between the sound card circuit board 18 and the rear housing 13.
The soft insulating layer 16 and/or the buffer member 160, such as highland barley paper and/or foam cotton layer, are arranged between the sound card circuit board 18 and the battery 15, and the foam cotton layer and highland barley paper are arranged between the highland barley paper and the sound card circuit board 18, wherein the soft insulating layer 16, such as highland barley paper, can play a role in heat insulation, prevent the heat of the battery 15 from causing adverse effect on the sound card circuit board 18, and also prevent the sound card circuit board 18 from being damaged due to direct contact with the battery 15.
Referring to fig. 7 to 9, the plurality of audio interfaces 195 in the third space 133 are arranged in a straight line, the plurality of audio interfaces 195 are electrically connected to the sound card circuit board 18, and in order to better fix the plurality of audio interfaces 195, the external sound card 10 further includes a fixing member 20, the fixing member 20 includes a cross bar 201, a plurality of connecting bars 202, and a plurality of fixing rings 203, each fixing ring 203 is connected to the cross bar 201 through a connecting bar 202, preferably, each fixing ring 203 is connected to the cross bar 201 through two connecting bars 202, and all the connecting bars 202 are arranged in parallel. The number of the fixing rings 203 is the same as that of the through holes formed in the second end face 122 of the rear shell 13, and the fixing rings 203 are clamped in the through holes formed in the rear shell 13 along the axial direction of the fixing rings 203; the rear housing 13 is provided with a limiting structure, and the limiting structure limits the movement of the fixing member 20 in the first direction and the second direction, and the first direction, the second direction and the axial direction of the fixing ring 203 are perpendicular to each other. As an embodiment, the limiting structure includes a bayonet 136 and a positioning strip 137, the cross bar 201 is clamped in the bayonet 136 along a first direction, adjacent connecting strips 202 for connecting different fixing rings 203 are matched to clamp the positioning strip 137, the clamping direction is a second direction, and the fixing member 20 realizes limiting in three different directions through the through hole, the bayonet 136 and the positioning strip 137.
Referring to fig. 10, as an embodiment, a power management unit and a power input terminal 51, a power supply output terminal 52, a battery charging terminal 53 and a battery discharging terminal 54 are disposed on a power circuit board of the present invention, and the power management unit includes a power supply path circuit 55 disposed between the power input terminal 51 and the power supply output terminal 52, a charging path circuit 56 disposed between the power input terminal 51 and the battery charging terminal 53, and a discharging path circuit 57 disposed between the battery discharging terminal 54 and the power supply output terminal 52. The battery charging terminal 53 and the battery discharging terminal 54 are connected with the battery 15, the power input terminal 51 is connected with the charging interface 193, and the power supply output terminal 52 is connected with the sound card circuit board 18 and the power supply pins of the data transmission interface 194. It will be appreciated that the electrical connection between the power supply output 52 and the sound card circuit board 18 is made through a first connector and a second connector.
When the charging interface 193 is connected to a charger or other charging equipment, if it is detected that the sound card circuit board 18 or the electronic equipment connected to the data transmission interface 194 needs to be powered, the power management unit controls the power supply path circuit 55 to be turned on, the discharging path circuit 57 is turned off, the voltage input by the charging interface 193 is input to the sound card circuit board 18 and/or the electronic equipment connected to the data transmission interface 194 through the power supply path circuit 55, in addition, when it is detected that the battery 15 is in an underfilling state, the power management unit can also control the charging path circuit 56 to be turned on to charge the battery 15, when the charging interface 193 is not connected to the charger or other charging equipment (i.e. no power input exists), if it is detected that the sound card circuit board 18 or the electronic equipment connected to the data transmission interface 194 needs to be powered, the power management unit controls the discharging path circuit 57 to be turned on, and the voltage output by the battery 15 is input to the sound card circuit board 18 and/or the electronic equipment connected to the data transmission interface 194 through the discharging path circuit 57.
When the external sound card 10 provided by the embodiment of the invention is connected to a charger or other charging equipment, the connected charger or other charging equipment can directly supply power to the sound card circuit board 18 and/or the electronic equipment connected to the data transmission interface 194, and the built-in battery 15 is not used for supplying power, so that the energy consumption is reduced, the heating value is reduced, and when the external sound card 10 is not connected to the charger or other charging equipment, the built-in battery 15 can supply power to the sound card circuit board 18 and/or the electronic equipment connected to the data transmission interface 194, and the functions of the external sound card 10 are enriched. When live broadcast outdoors, users do not need to worry about the fact that the electronic equipment cannot live broadcast when not powered on.
As an embodiment, the power management unit may further include a discharge path circuit (referred to as a secondary discharge path circuit for distinguishing from the foregoing discharge path circuit) disposed between the battery discharge terminal 54 and the power input terminal 51, that is, the external sound card 10 may further supply power to the electronic device through the charging interface 193.
As an embodiment, the external sound card 10 further includes a control key 59, the power supply circuit board 17 further includes a power supply output control end 58, the control key 59 is connected to the power supply output control end 58 to implement on and off control of the sound card circuit board 18, for example, when the sound card circuit board 18 is in an off state (the power supply output end 52 is in an output off state), a user may perform a first operation, such as pressing the control key 59 for a long time, after the power supply output control end 58 detects a corresponding control signal (the first control signal), the power management unit determines the on state of the charging interface 193, if a charger or other charging device is currently connected, controls the power supply path circuit 55 to be turned on, and outputs a 5V standard voltage (in a normal charging mode) at the power supply output end 52, so as to turn on the sound card circuit board 18 and supply power to the power supply pin of the data transmission interface 194, and if a charger or other charging device is not connected, controls the discharging path circuit 57 to be turned on, and outputs the 5V standard voltage at the power supply output end 52 by using the battery 15, so as to turn on the sound card circuit board 18 and supply the power pin of the data transmission interface 194. Conversely, when the sound card circuit board 18 is in the on state, the user may perform a second operation, such as pressing the control key 59 for a second time, and the power management unit turns off the currently-turned-on power supply path circuit 55 or the discharge path circuit 57 after detecting the corresponding control signal (second control signal), thereby turning off the sound card circuit board 18.
As an embodiment, the power circuit board 17 is further provided with a USB detection circuit, and the USB detection circuit is used for detecting the access of the type-c interface type electronic device on the data transmission interface 194, and the USB detection circuit is used for detecting the access of the type-c interface type electronic device, which belongs to the prior art.
As an embodiment, the power management unit further has a charging protocol identification terminal connected to the charging interface 193, where the power management unit may identify a device connected to the charging interface 193, and if it is identified that the connected external device is a charger or other charging device, the charging interface 193 is used as a power input interface of the external sound card 10, and if it is identified that the connected external device is an electronic device or other charged device, the charging interface 193 is used as a power output interface of the external sound card 10, preferably, the power circuit board has a fast charging function, and may accept fast charging of the external device or fast charging of the external device through the charging interface 193.
The power management unit in the embodiment of the invention can adopt the existing power management unit. For example, through an IP5358 chip and adapted peripheral circuitry.
As an embodiment, the power circuit board 17 may have a plurality of power supply output terminals, where the data transmission interface 194 and the sound card circuit board 18 may be connected to different power supply output terminals, i.e. power is supplied by different power supply output terminals, and preferably, in the present invention, the power supply pins of the sound card circuit board 18 and the data transmission interface 194 are connected to the same power supply output terminal 52 of the power circuit board 17, i.e. the data transmission interface 194 and the sound card circuit board 18 are powered by the same power supply output terminal 52 of the power management unit, so that the power management unit can control the output of one power supply output terminal 52, so that the data transmission interface 194 and the sound card circuit board 18 can supply power simultaneously, and when the data transmission interface 194 is connected to an electronic device (mobile phone, tablet computer, etc.), the electronic device and the sound card circuit board 18 can perform audio interaction, and at the same time, the power supply to the mobile electronic device can also be realized. In the audio interaction, the situation that live broadcast cannot be continued due to the fact that the electronic product is powered off is avoided. The power supply pins of the sound card circuit board 18 and the data transmission interface 194 are connected with the same power supply output end 52 of the power supply circuit board 17 to obtain electric energy, and the charging interface 193 is connected with a different power supply output end (the power supply output end can be additionally arranged or the power supply input end 51 can also be used as a power supply output end), so that differentiated design of power supply voltage is facilitated, and meanwhile stability of audio interaction is guaranteed. For example, the power management unit may provide quick charging or normal charging for the external electronic device connected to the charging interface 193, i.e. the power management unit may be independently connected to provide quick charging voltage for the charging interface 193 without affecting the power supply voltage of the sound card circuit board 18 and the data transmission interface 194, so as to avoid damage to the sound card circuit board 18 (the sound card circuit board is provided with a sound processing unit with limited withstand voltage) and the data transmission interface 194 caused by a larger voltage when the electronic device connected to the charging interface is quickly charged.
The charging interface 193 and the data transmission interface 194 are disposed on the same surface of the power circuit board 17 and between the power circuit board 17 and the sound card circuit board 18, and the data transmission interface 194 includes a power terminal and a data terminal, the power terminal being connected with the power supply output end 52 so that the power management unit can charge the external electronic device connected to the data transmission interface 194 via the power terminal. The data terminal is connected to the first connector and electrically connected to the sound card circuit board 18 through the second connector connected to the first connector, so that the sound processing unit can perform audio data interaction with the external electronic device connected to the data transmission interface 194 through the data terminal.
The sound card circuit board 18 is provided with a sound processing unit and a LAM module, the sound processing unit at least comprises a microprocessor, the microprocessor is a DSP chip, the DSP chip can process audio data to obtain audio data corresponding to sound effects desired by users, the DSP chip is electrically connected with the LAM module, the power supply output end 52 is connected to the DSP chip through a first connector and a second connector, a data terminal in the data transmission interface 194 is connected to the LAM module through the first connector and the second connector, and electronic equipment connected to the data transmission interface 194 performs audio data interaction with the DSP chip through the LAM module. It will be appreciated that the data terminals may be directly connected to the first connector via wires, and then connected to the LAM module via the second connector, where the wires may be disposed on the power circuit board 17 or may be independent of wires of the power circuit board 17. The LAM module may also be used to detect access to a lighting interface type electronic device on the data transmission interface 194, where detecting access to the lighting interface type electronic device by using the LAM module belongs to the prior art.
As a specific example, the charging interface 193 and the data transmission interface 194 are type-c sockets.
It is appreciated that the charging interface 193 is a type-c female socket, which may employ existing type-c female socket technology. The charging interface 193 is used for charging and discharging, that is, when the charging interface 193 is connected with a charging device such as a charger, the charging device charges and supplies power to the external sound card 10 through the charging interface 193, and when the charging interface 193 is connected with an electronic device, the external sound card 10 charges the electronic device.
It will be appreciated that the electronic device connected to the data transmission interface 194 may obtain power from the external sound card 10 and perform live broadcast at the same time. The interface type of the electronic device may be a type-c interface or a lighting interface. In order to realize that the data transmission interface 194 is connected with the electronic device with two different interfaces, an adapter wire may be additionally provided, for example, an adapter wire with one for two is provided, one end of the adapter wire with one for two is a male head matched with the charging interface 193, and the other end is a double-head: lighting male and type-c male.
Referring to fig. 11, as an embodiment, the data transmission interface 194 is a type-c interface, which includes a plurality of standard connection pins, wherein the plurality of standard connection pins include a first portion pin and a second portion pin, and are respectively used for performing audio data interaction with an external type-c interface type electronic device and an external type-lighting interface type electronic device.
The first part of pins are arranged according to the Type-C interface Type, wherein a CC1 pin, a CC2 pin, a GND pin and a VBUS pin in the first part of pins are connected to the power circuit board 17; the DP pin and the DM pin of the first partial pin are connected to the DSP chip via the power circuit board 17, the connector.
In the second part of pins, the TX 2-pin and the TX 1-pin are correspondingly matched with a LAM_D-pin in the lighting interface type, and the RX 2-pin and the RX 1-pin are correspondingly matched with a digital LAM_GND in the lighting interface type; the RX2+ pin and the RX1+ pin are correspondingly matched with the LAM_DW pin in the lighting interface type; the TX1+ pin and the TX2+ pin are correspondingly matched with the LAM_D+ pin in the lighting interface type; the SBU2 and SBU1 pins correspondingly match the LAM_PWR pin in the lighting interface type.
As an embodiment, the power supply terminal in the first part of pins and the power supply terminal in the second part of pins are connected to the same terminal of the power circuit board. The ground in the lighting interface type is matched to the ground in the data transmission interface 194.
As one embodiment, the data transmission interface 194 includes a first resistor, a second resistor, a third resistor, and a fourth resistor, where the first resistor and the second resistor are connected in series between a power supply terminal (VBUS) and a ground terminal, and a USB d+ terminal in the lighting interface type is matched between the series points of the first resistor and the second resistor; the third resistor and the fourth resistor are connected in series between a power supply terminal (VBUS) and a ground terminal, and a USB D+ terminal in the second data line interface type is matched between series points of the third resistor and the fourth resistor.
Those skilled in the art will appreciate that the above-described preferred embodiments can be freely combined and stacked without conflict.
It will be understood that the above-described embodiments are merely illustrative and not restrictive, and that all obvious or equivalent modifications and substitutions to the details given above may be made by those skilled in the art without departing from the underlying principles of the invention, are intended to be included within the scope of the appended claims.
Claims (6)
1. An external sound card, comprising:
a battery;
the power supply circuit board is provided with a power supply management unit and is electrically connected with the battery;
the sound card circuit board is provided with a sound processing unit and is electrically connected with the power supply circuit board;
the charging interface is arranged between the power circuit board and the sound card circuit board and is electrically connected with the power circuit board;
the data transmission interface is arranged between the power circuit board and the sound card circuit board;
the data transmission interface comprises a power terminal and a data terminal, wherein the power terminal is electrically connected with the power circuit board so that the power management unit can charge external electronic equipment connected to the data transmission interface through the power terminal; the data terminal is electrically connected with the sound card circuit board, so that the sound processing unit can perform audio data interaction with external electronic equipment connected to the data transmission interface through the data terminal;
The power supply management unit comprises a power supply path circuit, a charging path circuit, a discharging path circuit and a power supply output end connected with the discharging path circuit and the power supply path circuit, and the power supply output end is connected with the power supply terminal and the sound card circuit board; the charging interface is connected with the battery through the charging path circuit and is connected to the power supply output end through the power supply path circuit; the battery is connected with the power terminal and the sound card circuit board through the discharging path circuit;
the external sound card further comprises a power supply output control end for controlling the sound card circuit board to be turned on or turned off, when the power supply output control end receives a first control signal, the power supply management unit controls the sound card circuit board to be turned on according to the first control signal, and charging equipment connected to the charging interface supplies power for external electronic equipment connected to the sound card circuit board, the battery and the data transmission interface, or the battery supplies power for the sound card circuit board, the charging interface and the electronic equipment on the data transmission interface; when the power supply output control end receives a second control signal, the second control signal controls the sound card circuit board to be closed;
The power supply terminal of the data transmission interface and the data transmission interface are connected with the power supply output end to acquire electric energy in a common charging mode;
a secondary discharge path circuit is arranged between the battery and the charging interface, and the battery can provide quick charging or common charging for external electronic equipment connected to the charging interface.
2. The external sound card of claim 1, wherein the data transmission interface is connected with an adapter wire, one end of the adapter wire is connected with the data transmission interface, and the other end of the adapter wire is a lighting male head and a type-c male head for electrically connecting with external electronic equipment; the power circuit board is provided with a USB detection circuit which is used for detecting the access of the type-c interface type electronic equipment on the transfer line; the sound card circuit board is provided with a DSP chip and a LAM module, the LAM module is connected to the DSP chip and is at least used for detecting the access of the lighting interface type electronic equipment on the transfer line.
3. The external sound card of claim 1, wherein a first connector and a second connector are respectively arranged on opposite sides of the data transmission interface and the power circuit board, and the data transmission interface and the power circuit board are electrically connected through the first connector and the second connector; the sound card circuit board comprises a DSP chip and a LAM module, the DSP chip is connected with the LAM module, and the data terminals carry out audio data interaction through the first connector, the second connector, the LAM module and the DSP chip; the power circuit board supplies power to the DSP chip through the first connector and the second connector.
4. The external sound card of claim 1, wherein the external sound card comprises a plurality of audio interfaces electrically connected to the sound card circuit board; the charging interface, the data transmission interface, the plurality of audio interfaces, the battery, the sound card circuit board and the power supply circuit board are accommodated in the accommodating space; the sound card circuit board is fixed on the rear shell and covers the opening, and the charging interface, the data transmission interface, the battery and the power circuit board are limited between the sound card circuit board and the rear shell;
the inside first baffle and the second baffle of being provided with of backshell, first baffle with the second baffle will the backshell internal partition has become first space, second space and third space along its plane extending direction, the second space is located first space with between the third space, power supply circuit board holds in the first space, the battery holds in the second space, a plurality of audio interfaces hold in the third space.
5. The external sound card of claim 1, wherein the external sound card comprises a front shell and a rear shell, wherein the rear shell and the front shell are connected to form a containing space, and the charging interface, the data transmission interface, the plurality of audio interfaces, the battery, the sound card circuit board and the power circuit board are contained in the containing space; the light-transmitting cover plate is also included; the front shell is provided with a first area and a second area, the first area is provided with a containing groove, the light-transmitting cover plate is contained in the containing groove, and the light-transmitting cover plate is fixedly connected with the front shell through a pasting structure and/or a clamping structure; the outer surface of the light-transmitting cover plate is in smooth transition with the second area;
The area ratio of the first region to the second region is (0.3-1.7): 1.
6. the external sound card of claim 5, wherein the first area of the front shell is provided with a light hole, and the sound card circuit board is provided with a light-emitting element corresponding to the light hole; the external sound card further comprises a light homogenizing sheet and a light transmitting piece, wherein the light homogenizing sheet is arranged in the light transmitting hole and/or the accommodating groove; the light-transmitting piece is arranged on the surface of the sound card circuit board, on which the light-emitting elements are arranged, and comprises a plurality of light-isolating strips, wherein adjacent light-emitting elements are isolated by the light-isolating strips, and light emitted by the light-emitting elements is emitted from between the adjacent light-isolating strips.
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| CN202110750421.6A CN113645545B (en) | 2021-07-01 | 2021-07-01 | External sound card |
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| CN202110750421.6A CN113645545B (en) | 2021-07-01 | 2021-07-01 | External sound card |
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| CN113645545B true CN113645545B (en) | 2024-01-26 |
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