CN116820254B - Keyboard control device applied to earphone with interactive display screen - Google Patents
Keyboard control device applied to earphone with interactive display screen Download PDFInfo
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- CN116820254B CN116820254B CN202310805937.5A CN202310805937A CN116820254B CN 116820254 B CN116820254 B CN 116820254B CN 202310805937 A CN202310805937 A CN 202310805937A CN 116820254 B CN116820254 B CN 116820254B
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- 230000002452 interceptive effect Effects 0.000 title claims abstract description 38
- 238000004891 communication Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000000630 rising effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 230000003993 interaction Effects 0.000 abstract description 8
- 230000033764 rhythmic process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
- G06F3/0219—Special purpose keyboards
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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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
Abstract
The invention relates to the technical field of earphone control with an interactive display screen, in particular to a keyboard control device applied to an earphone with an interactive display screen, which comprises: the wireless transmitter is provided with at least one for transmitting an audio analog signal and a display screen control signal; the keyboard is used for generating display screen control signals manually; the signal distribution unit is provided with at least one transmitter interface connected with the wireless transmitter, a keyboard interface connected with the keyboard, a power jack for supplying power and a signal distribution circuit for distributing control signals of the display screen. The operation can be realized through one keyboard control, so that the full-field display interaction only needs one person to conduct command, the interaction efficiency can be greatly improved, the quick switching of the on-site rhythm is ensured, and the use requirement of consumers is met.
Description
Technical Field
The invention relates to the technical field of earphone control with an interactive display screen, in particular to a keyboard control device applied to an earphone with an interactive display screen.
Background
An earphone with an interactive display screen as described in the patent grant publication CN103535051B, which can interactively display content according to the definition of the user or by other parameters, including but not limited to: GPS location, user movements, sounds, voices, nearby images, and/or commands received from an authorized internet site or nearby authorized devices via wireless communication. In addition to reproducing music and sound, headphones have also been transformed into complex interactive display platforms. As a result, the headphones enable the user to express his/her perception publicly to nearby people by displaying still, animated or interactive images or videos.
After the technology is developed, if the technology is applied to a large-scale music scene, scene consumers wear headphones with an interactive display screen, the scene can simultaneously set a plurality of channels to import a plurality of music, and then different music can be selectively listened by switching different channels; the interactive display screen is controlled by a field worker, and the field worker transmits information by operating the interactive display screen, so that a field consumer can interact with the field through the interactive display screen under different music channels; the application mode can reduce noise generated by large-scale music spot and can meet different requirements of different consumers on listening to music.
However, when the earphone is controlled to receive music (audio) of a plurality of channels and to transmit information to the interactive display screen, a plurality of transmitters of different channels need to be set on site, and the interactive display screen controlling the earphone of different channels displays the same information, a plurality of transmitters need to be operated simultaneously, a plurality of staff needs to be equipped on site, and each transmitter needs to be operated synchronously by the plurality of staff to achieve the purpose of displaying the same information to the plurality of interactive display screens simultaneously.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a technical scheme capable of solving the problems.
A keyboard control device for headphones with an interactive display screen, comprising:
the wireless transmitter is provided with at least one for transmitting an audio analog signal and a display screen control signal;
the keyboard is used for generating display screen control signals manually;
the signal distribution unit is provided with at least one transmitter interface connected with the wireless transmitter, a keyboard interface connected with the keyboard, a power jack for supplying power and a signal distribution circuit for distributing display screen control signals, wherein the transmitter interface, the keyboard interface and the power jack are all electrically connected with the signal distribution circuit, the signal distribution unit supplies power through the power jack, and voltage for generating the display screen control signals is provided for the keyboard through the keyboard interface.
Preferably, when a plurality of wireless transmitters are provided, the signal distribution unit is provided with a plurality of signal distributors according to the plurality of wireless transmitters, each signal distributor is provided with a transmitter interface, a keyboard interface, a power jack and a signal distribution circuit, and the plurality of wireless transmitters are respectively connected with the transmitter interfaces of the plurality of signal distributors; each signal distributor is also provided with a female connector and a male connector, and a plurality of signal distributors are sequentially butted through the female connector and the male connector; the method comprises the steps that a plurality of signal distributors are arranged into a master signal distributor and a plurality of slave signal distributors, the master signal distributor is connected with a keyboard through a keyboard interface, and the master signal distributor sends display screen control signals to the slave signal distributors through a female connector or a male connector.
Preferably, the male connector, the female connector, the transmitter interface and the keyboard interface are all provided with communication pins, the signal distribution circuit is provided with a receiving module for receiving display screen control signals, a transmitting module for transmitting the display screen control signals and a main control module for playing a central control role, the keyboard interface, the female connector and the male connector are respectively connected with the receiving module through the communication pins, and the main control module receives the display screen control signals generated by the keyboard interface through the receiving module and transmits the display screen control signals to the transmitter interface through the transmitting module; the female connector and the male connector are controllably connected with the transmitting module and the receiving module respectively through the main control module.
Preferably, the main control module is provided with two control pins, control is realized through high-low level change, the transmission module and the receiving module carry out periodic control to the two control pins, the transmission module and the receiving module are respectively connected with a first control switch, the control ends of the two first control switches are respectively connected with the two control pins, the transmission module and the receiving module are respectively connected with the communication pins of the female connector through the first control switches, the transmission module and the receiving module are respectively connected with a second control switch, the control ends of the two second control switches are respectively connected with the two control pins, and the transmission module and the receiving module are respectively connected with the communication pins of the male connector through the second control switches.
Preferably, the male connector, the female connector and the keyboard interface are all provided with power supply pins, and the power supply pins of the male connector, the female connector and the keyboard interface are all connected in parallel with the power supply jacks of the signal distributors, so that the signal distributors can supply power only through the power supply jack of one signal distributor after being sequentially connected.
Preferably, the main control module is provided with an interlocking program unit, when the plurality of signal distributors are respectively connected with the plurality of keyboards through the keyboard interfaces, the interlocking program unit detects a rising edge signal generated by the keyboard, after the keyboard is operated to generate the rising edge signal, the signal distributor corresponding to the keyboard is set as a main signal distributor, and other signal distributors are set as slave signal distributors and perform interlocking operation through the interlocking program unit, so that the keyboard of the slave signal distributor cannot respond after being operated.
Preferably, the signal distributor is further provided with a display module electrically connected to the main control module, and the signal distributor visually displays the control signals of the display screen through the display module.
Preferably, the signal distributor is further provided with an indicator light electrically connected to the main control module, and the signal distributor visually displays the control signal of the display screen sent to the wireless transmitter through the indicator light.
Compared with the prior art, the invention has the beneficial effects that:
the wireless transmitters are transmitted to each earphone with an interactive display screen in a wireless signal mode, corresponding display information can be stored in the interactive display screen in advance, and the interactive display screen can be controlled to display corresponding information according to the display screen control signals after receiving the display screen control signals, so that people on a large-scale music scene can watch command of staff or command staff from the display screen at the same time, and interaction effect is achieved under different music scenes; the operation can be realized through one keyboard control, so that the full-field display interaction only needs one person to conduct command, the interaction efficiency can be greatly improved, the quick switching of the on-site rhythm is ensured, and the use requirement of consumers is met.
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.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the signal distributor of the present invention;
FIG. 3 is a block diagram of the modular connections of the circuit portion of the signal distributor of the present invention;
FIG. 4 is a schematic diagram of a plurality of signal splitters of the present invention after being sequentially docked;
FIG. 5 is a schematic diagram of a team component dispenser assembly of the present invention;
fig. 6 is a schematic diagram of an application scenario of the present invention.
Reference numerals and names in the drawings are as follows:
the wireless transmitter 10, the keyboard 20, the signal distribution unit 30, the transmitter interface 31, the keyboard interface 32, the power jack 33, the signal distribution circuit 34, the receiving module 341, the transmitting module 342, the main control module 343, the control pin 344, the first control switch 345, the second control switch 346, the signal distributor 40, the connector female head 41, the connector male head 42, the display module 43 and the indicator light 44.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 6, in an embodiment of the present invention, a keyboard control device applied to an earphone with an interactive display screen includes:
a wireless transmitter 10, the wireless transmitter 10 being provided with at least one for transmitting an audio analog signal and a display screen control signal;
the keyboard 20, the keyboard 20 is used for generating the control signal of the display screen manually;
the signal distribution unit 30, the signal distribution unit 30 is provided with at least one transmitter interface 31 connected to the wireless transmitter 10, a keyboard interface 32 connected to the keyboard 20, a power jack 33 for supplying power, and a signal distribution circuit 34 distributing display screen control signals, the transmitter interface 31, the keyboard interface 32, and the power jack 33 are all electrically connected to the signal distribution circuit 34, the signal distribution unit 30 supplies power through the power jack 33, and supplies the keyboard 20 with a voltage for generating the display screen control signals through the keyboard interface 32.
In the above technical solution, the keyboard control device is applied to the earphone with the interactive display screen, and can more flexibly control the interactive display screen on the earphone in a large-scale music scene, and by setting a plurality of wireless transmitters 10, each wireless transmitter 10 is used for transmitting music of different channels, and a consumer can operatively select different channels through the earphone with the interactive display screen, so that different consumers on the scene can listen to the music of the corresponding channels according to their own preference by wearing the earphone with the interactive display screen in the large-scale music scene;
by arranging a signal distribution unit 30, the number of transmitter interfaces 31 is correspondingly arranged according to the number of the wireless transmitters 10, by adopting a signal distribution circuit 34, display screen control signals generated by an operation keyboard 20 can be received by the signal distribution circuit 34 and transmitted to each wireless transmitter 10 through the transmitter interfaces 31, the wireless transmitters 10 transmit to each earphone with an interactive display screen in a wireless signal mode, and corresponding display information which can be various expressions, various advertisements, various colors, various interactive sentences and the like is stored in the interactive display screen in advance, and after the interactive display screen receives the display screen control signals, the interactive display screen is controlled to display corresponding information according to the display screen control signals, so that people on a large-scale music scene can watch command of staff or commander from the display screen at the same time, and interaction effect is achieved under different music scenes; the operation can be realized through the control of the keyboard 20, so that the full-field display interaction only needs one person to conduct command, the interaction efficiency can be greatly improved, the quick switching of the field rhythm is ensured, and the use requirement of consumers is met.
Referring to fig. 1-4, in the present embodiment, considering that there are different numbers of music channels in different music sites, in order to flexibly connect a plurality of wireless transmitters 10, when the wireless transmitters 10 are provided with a plurality of wireless transmitters, the signal distribution unit 30 is provided with a plurality of signal distributors 40 according to the plurality of wireless transmitters 10, each signal distributor 40 has a transmitter interface 31, a keyboard interface 32, a power jack 33 and a signal distribution circuit 34, and the plurality of wireless transmitters 10 are respectively connected with the transmitter interfaces 31 of the plurality of signal distributors 40; each signal distributor 40 is also provided with a female connector 41 and a male connector 42, and a plurality of signal distributors 40 are sequentially butted through the female connector 41 and the male connector 42; the plurality of signal distributors 40 are provided as one master signal distributor 40 and a plurality of slave signal distributors 40, the master signal distributor 40 is connected with the keyboard 20 through the keyboard interface 32, and the master signal distributor 40 transmits the display screen control signal to the slave signal distributors 40 through the connector female 41 or the connector male 42. For example, when 10 wireless transmitters 10 are needed, 10 signal distributors 40 are connected to control 10 wireless transmitters 10 simultaneously, and 10 wireless transmitters 10 are also connected to a plurality of keyboards 20 simultaneously, so that synchronous control of multiple people can be realized, i.e. other staff can be provided in the field besides commanders, or consumers can control, i.e. control of the interactive display screen is more flexible by connecting a plurality of keyboards 20, so that the interactive atmosphere is improved.
Referring to fig. 1-4, in this embodiment, by providing the male connector 42, the female connector 41, the transmitter interface 31 and the keyboard interface 32 with communication pins, the signal distribution circuit 34 is provided with a receiving module 341 for receiving a display screen control signal, a transmitting module 342 for transmitting the display screen control signal, and a main control module 343 for performing central control, the keyboard interface 32, the female connector 41 and the male connector 42 are respectively connected with the receiving module 341 through the communication pins, and the main control module 343 receives the display screen control signal generated by the keyboard interface 32 through the receiving module 341 and transmits the display screen control signal to the transmitter interface 31 through the transmitting module; the female connector 41 and the male connector 42 are controllably connected with the transmitting module 342 and the receiving module 341 through a main control module 343 respectively; namely, the connector female 41 and the connector male 42 can be set as a transmitting end or a receiving end by the main control module 343. In order to achieve this, in this embodiment, the female connector 41 and the male connector 42 are controlled by periodically variable amounts, that is, the main control module 343 is provided with two control pins 344, the control is achieved by high-low level variation, the transmitting module 342 and the receiving module 341 periodically control the two control pins 344, the transmitting module 342 and the receiving module 341 are respectively connected with a first control switch 345, the control ends of the two first control switches 345 are respectively connected with the two control pins 344, the transmitting module 342 and the receiving module 341 are respectively connected with the communication pins of the female connector 41 through the first control switches 345, the transmitting module 342 and the receiving module 341 are respectively connected with a second control switch 346, and the control ends of the two second control switches 346 are respectively connected with the two control pins 344, and the transmitting module 342 and the receiving module 341 are respectively connected with the communication pins of the male connector 42 through the second control switches 346; in this way, the female connector 41 and the male connector 42 can each be made to function as a receiving end or a transmitting end in one cycle, so that a plurality of signal splitters 40 can be flexibly provided as the master signal splitter 40 or the slave signal splitter 40.
Further, in order to enable the plurality of signal splitters 40 to supply power through one power jack 33, the male connector 42, the female connector 41 and the keyboard interface 32 are provided with power supply pins, and the power supply pins of the male connector 42, the female connector 41 and the keyboard interface 32 are all connected in parallel with the power jack 33 of the signal splitter 40, so that the plurality of signal splitters 40 can supply power through only the power jack 33 of one of the signal splitters 40 after being sequentially docked.
Further, the main control module 343 is provided with an interlock program unit, when the plurality of signal distributors 40 are respectively connected to the plurality of keyboards 20 through the keyboard interfaces 32, the interlock program unit detects a rising edge signal generated by the keyboards 20, when the keyboards 20 are operated to generate the rising edge signal, the signal distributor 40 corresponding to the keyboards 20 is set as a main signal distributor 40, and other signal distributors 40 are set as slave signal distributors 40 and perform an interlock operation through the interlock program unit, so that the keyboards 20 of the slave signal distributors 40 cannot respond after being operated; furthermore, the interlock program element of the present solution may be further configured to shut off the power supply pins of the keyboard interface 32 on the slave signal distributor 40 in such a way that the keyboard 20 of the slave signal distributor 40 is not responsive after being operated; that is, each of the keyboards 20 detects whether or not the other keyboards 20 have pressed the key, and if the other keyboards 20 have pressed the key, the present keyboard 20 does not respond even if the key is pressed, in this way, it is possible to prevent a plurality of keyboards 20 from generating a collision at the time of operation.
In addition, in order to achieve sufficient power and simultaneously connect multiple signal splitters 40, the multiple signal splitters 40 may be connected by splitting the multiple signal splitters 40 into multiple splitter assemblies, each of which is connected by a cable through a male connector 42 and a female connector 42, specifically, one signal splitter 40 is selected from the two adjacent splitter assemblies, one end of the cable is connected to the keyboard interface 32 of the last selected splitter 40, the other end of the cable is connected to the transmitter interface 31 of the next selected splitter 40, i.e., the next splitter assembly is to be used as a keyboard 20 for the last splitter assembly, as shown in fig. 5, any one of the splitter assemblies 40 of the first splitter assembly may control the transmitters 1-20 through the keyboard 20 of the splitter assembly, any one of the splitter assemblies 40 of the second splitter assembly may control the transmitters 1-39 through the keyboard 20 of the splitter assembly, and any one of the third splitter assembly may control only the transmitters 1-39 through the keyboard 20 of the splitter assembly.
Referring to fig. 2, the signal distributor 40 is further provided with a display module 43 electrically connected to the main control module 343, and the signal distributor 40 visually displays the control signal of the display screen through the display module 43; the signal distributor 40 is further provided with an indicator lamp 44 electrically connected to the main control module 343, and the signal distributor 40 visually displays the display screen control signal sent to the wireless transmitter 10 through the indicator lamp 44.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (6)
1. The utility model provides a be applied to keyboard control device of taking interactive display screen earphone which characterized in that includes:
the wireless transmitter is provided with at least one for transmitting an audio analog signal and a display screen control signal;
the keyboard is used for generating display screen control signals manually;
the signal distribution unit is provided with at least one transmitter interface connected with the wireless transmitter, a keyboard interface connected with the keyboard, a power jack for supplying power and a signal distribution circuit for distributing display screen control signals, wherein the transmitter interface, the keyboard interface and the power jack are all electrically connected with the signal distribution circuit, the signal distribution unit supplies power through the power jack and provides voltage for generating the display screen control signals for the keyboard through the keyboard interface;
when a plurality of wireless transmitters are arranged, the signal distribution unit is provided with a plurality of signal distributors according to the plurality of wireless transmitters, each signal distributor is provided with a transmitter interface, a keyboard interface, a power jack and a signal distribution circuit, and the plurality of wireless transmitters are respectively connected with the transmitter interfaces of the plurality of signal distributors; each signal distributor is also provided with a female connector and a male connector, and a plurality of signal distributors are sequentially butted through the female connector and the male connector; setting a plurality of signal distributors into a master signal distributor and a plurality of slave signal distributors, wherein the master signal distributor is connected with a keyboard through a keyboard interface, and the master signal distributor sends display screen control signals to the slave signal distributors through a female connector or a male connector;
and the signal distribution circuit is provided with an interlocking program unit, when a plurality of signal distributors are respectively connected with a plurality of keyboards through keyboard interfaces, the interlocking program unit detects a rising edge signal generated by the keyboards, after the keyboards are operated to generate the rising edge signal, the signal distributor corresponding to the keyboards is set as a master signal distributor, and other signal distributors are set as slave signal distributors and perform interlocking operation through the interlocking program unit, so that the keyboards of the slave signal distributors cannot respond after being operated.
2. The keyboard control device applied to the earphone with the interactive display screen according to claim 1, wherein the male connector, the female connector, the transmitter interface and the keyboard interface are all provided with communication pins, the signal distribution circuit is provided with a receiving module for receiving control signals of the display screen, a transmitting module for transmitting the control signals of the display screen and a main control module for playing a central control role, the interlocking program unit is arranged through the main control module, the keyboard interface, the female connector and the male connector are respectively connected with the receiving module through the communication pins, and the main control module receives the control signals of the display screen generated by the keyboard interface through the receiving module and transmits the control signals of the display screen to the transmitter interface through the transmitting module; the female connector and the male connector are controllably connected with the transmitting module and the receiving module respectively through the main control module.
3. The keyboard control device applied to the earphone with the interactive display screen according to claim 2, wherein the main control module is provided with two control pins, the control is realized through high-low level change, the transmission module and the receiving module are used for periodically controlling the two control pins, the transmission module and the receiving module are respectively connected with a first control switch, the control ends of the two first control switches are respectively connected with the two control pins, the transmission module and the receiving module are respectively connected with the communication pins of the female connector through the first control switches, the transmission module and the receiving module are respectively connected with a second control switch, the control ends of the two second control switches are respectively connected with the two control pins, and the transmission module and the receiving module are respectively connected with the communication pins of the male connector through the second control switches.
4. A keyboard control device applied to an earphone with an interactive display screen according to any one of claims 1-3, wherein the male connector, the female connector and the keyboard interface are provided with power supply pins, and the power supply pins of the male connector, the female connector and the keyboard interface are all connected in parallel with the power supply jacks of the signal distributor, so that a plurality of signal distributors can be powered by only the power supply jack of one signal distributor after being sequentially connected in a butt joint mode.
5. The keyboard control device applied to the earphone with the interactive display screen according to claim 2, wherein the signal distributor is further provided with a display module electrically connected to the main control module, and the signal distributor visually displays the control signal of the display screen through the display module.
6. The keyboard control device for the earphone with the interactive display screen according to claim 5, wherein the signal distributor is further provided with an indicator light electrically connected to the main control module, and the signal distributor visually displays the display screen control signal sent to the wireless transmitter through the indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310805937.5A CN116820254B (en) | 2023-07-03 | 2023-07-03 | Keyboard control device applied to earphone with interactive display screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310805937.5A CN116820254B (en) | 2023-07-03 | 2023-07-03 | Keyboard control device applied to earphone with interactive display screen |
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| CN116820254A CN116820254A (en) | 2023-09-29 |
| CN116820254B true CN116820254B (en) | 2024-03-08 |
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| CN202310805937.5A Active CN116820254B (en) | 2023-07-03 | 2023-07-03 | Keyboard control device applied to earphone with interactive display screen |
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