CN113778923A - Multifunctional electronic equipment - Google Patents
Multifunctional electronic equipment Download PDFInfo
- Publication number
- CN113778923A CN113778923A CN202110988438.5A CN202110988438A CN113778923A CN 113778923 A CN113778923 A CN 113778923A CN 202110988438 A CN202110988438 A CN 202110988438A CN 113778923 A CN113778923 A CN 113778923A
- Authority
- CN
- China
- Prior art keywords
- audio
- interface
- audio processor
- electronic device
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005236 sound signal Effects 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 4
- 238000003032 molecular docking Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The application discloses multifunctional electronic equipment, including the casing with fix the speaker on the casing, be provided with the circuit board in the casing, multifunctional electronic equipment is equipped with the main interface that is used for connecting outside host computer to and microphone array and a plurality of extension interfaces that are used for transmitting data, be provided with multiport repeater, audio processor, digital analog audio converter that connect gradually on the circuit board and with the audio power amplifier that the speaker is connected, the extension interface with main interface or multiport repeater are connected; and a switch is connected between the audio processor and the multi-port transponder and is used for switching and controlling between reception and broadcasting. The multifunctional electronic equipment provided by the embodiment of the application has the functions of sound playing, hub and video switching.
Description
Technical Field
The application relates to the technical field of electronics, in particular to multifunctional electronic equipment.
Background
With the rapid development of information technology, many enterprises arrange conferences to be held online, and the popularization of teleconferencing brings safer and more efficient working experience to people. The screen of the video conference can be connected to the external display device only through the video and audio output port of the computer at present. Apple computers and computers supporting TYPE-C on the market are more and more at present, the machine body is light and thin and is convenient to carry, the computers are thinner and thinner, the function of an external interface is simplified, and diversified output requirements cannot be met.
Most conference sound equipment on the market has the problems of poor mobility, single function, slow connection, few applicable scenes and the like, and possibly has the problems that audio input and output can interfere with each other and the user experience is poor.
Disclosure of Invention
One of the purposes of the embodiment of the application is as follows: the multifunctional electronic equipment is provided, and solves the problems that most conference sounds in the market are single in function, few in applicable scenes, and the audio input and output can interfere with each other.
The technical scheme adopted by the embodiment of the application is as follows:
in a first aspect, a multifunctional electronic device is provided, which includes a housing and a speaker fixed on the housing, wherein a circuit board is disposed in the housing, and is characterized in that the multifunctional electronic device is provided with a main interface for connecting with an external host, a microphone array and a plurality of expansion interfaces for transmitting data, the circuit board is provided with a multi-port repeater, an audio processor, a digital-to-analog audio converter and an audio power amplifier connected with the speaker, which are connected in sequence, and the expansion interfaces are connected with the main interface or the multi-port repeater; the microphone array is connected with the audio processor and used for receiving sound and outputting an audio signal to the audio processor; the audio processor with be connected with the change over switch between the multiport transponder, the change over switch include electronic switch and with MOS pipe that electronic switch is connected, electronic switch's first end is connected the multiport transponder, and the second end passes through the audio processor and is connected to the microphone array, and the third end is used for passing through the audio processor is connected to digital-to-analog audio converter, MOS pipe access switching control signal control electronic switch's switch switches over in order to realize with the audio signal that main interface inserts from the multiport transponder transmit to the audio processor and from the audio signal transmission of microphone output from the audio processor is done switching control between the multiport transponder.
The shell is also provided with a first key connected with the multi-port transponder, and the first key is used for answering and hanging up control, or starting and suspending control, or switching control.
In one embodiment, the housing is further provided with a second key connected with the audio processor, and the second key is used for controlling the volume of the audio played by the loudspeaker.
In one embodiment, the multi-port repeater further comprises a controller arranged on the circuit board, wherein the controller is connected with the first key and the second key and is used for identifying the key operation of the first key and the second key and outputting corresponding control signals to the audio processor or the multi-port repeater.
In one embodiment, the expansion interface includes a USB interface connected to the multi-port repeater, and an HDMI interface connected to the host interface.
In one embodiment, the system further comprises a power interface, wherein the power interface is connected with the main interface.
In one embodiment, the main interface is a TYPE-C interface, and the power interface is a TYPE-C PD.
In one embodiment, the multi-port transponder is communicatively coupled to the audio processor via a USB2.0 channel.
In one embodiment, the audio device further comprises a microphone connected with the audio processor for receiving and outputting audio signals to the audio processor.
In one embodiment, a switch is connected between the audio processor and the multi-port repeater for switching between transmitting audio signals accessed by the main interface from the multi-port repeater to the audio processor and transmitting audio signals output from the microphone from the audio processor to the multi-port repeater.
In one embodiment, the multi-port repeater includes a hub chip VL 817.
In one embodiment, the audio processor includes an audio processing chip XVF 3000.
In one embodiment, the digital-to-analog audio converter includes a digital-to-analog audio conversion chip HT 5010.
In one embodiment, the audio power amplifier includes an audio power amplification chip HT 6872.
In one embodiment, the HDMI interface is communicatively connected to the main interface via a video conversion chip.
In one embodiment, the multifunctional electronic device is a sound box, a display screen or a docking station.
Advantageous effects
The multifunctional electronic equipment provided by the embodiment of the application has the advantages that the loudspeaker is arranged to realize the sound playing function, the plurality of expansion interfaces are arranged to realize the docking function, the microphone array is arranged to receive sound to realize the instant messaging function, the problems that most of traditional conference sounds are single in function, few in applicable scenes and the like are solved, and the multifunctional electronic equipment is portable, strong in expansibility and wide in applicable scenes; in addition, the audio processor can only input or output audio signals at the same time through switching control, so that the problem that audio input and output can interfere with each other is prevented, and user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a block diagram of a multifunctional electronic device according to an embodiment of the present application;
fig. 2 is a block diagram of a multifunctional electronic device provided in an embodiment two of the present application;
fig. 3 is a schematic circuit diagram of a switch in a multifunctional electronic device according to an embodiment of the present application;
fig. 4 is a block diagram of a multifunctional electronic device provided in the third embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and operate, and thus are not to be construed as limiting the present application, and the specific meanings of the above terms may be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
In order to explain the technical solutions provided in the present application, the following detailed description is made with reference to specific drawings and examples.
Referring to fig. 1, some embodiments of the present application provide a multifunctional electronic device, which may be a sound box, a display screen, or a docking station. The multifunctional electronic equipment comprises a shell and a loudspeaker 11 fixed on the shell, wherein a circuit board is arranged in the shell, the multifunctional electronic equipment is provided with a main interface 12 used for connecting an external host 200, a microphone array 13 and a plurality of expansion interfaces 14 used for transmitting data, a multi-port transponder 15(HUB), an audio processor 16, a digital-to-analog audio converter 17 and an audio power amplifier 18 connected with the loudspeaker 11 which are sequentially connected are arranged on the circuit board, and the expansion interfaces 14 are connected with the main interface 12 or the multi-port transponder 15; the microphone array 13 is connected with the audio processor 16 and used for receiving sound and outputting an audio signal to the audio processor 16; a switch 21 is connected between the audio processor 16 and the multi-port repeater 15, and the switch 21 is used for switching control between transmission of the audio signal accessed by the main interface 12 from the multi-port repeater 15 to the audio signal pin of the audio processor 16 and transmission of the audio signal output from the microphone array 13 from the audio signal pin of the audio processor 16 to the multi-port repeater 15 according to a switching control signal. The switching control realizes switching between sound playing and speech reception input, so as to avoid that the microphone array 13 picks up sound played by the loudspeaker 11 during sound playing, which results in unclear conversation of instant messaging.
The operation of the switch 21 may be performed by controlling the switch 21 after an instruction is input to the main interface 12 by the operation of the external host 200, or may be performed by controlling the switch 21 by a button provided in the multifunctional electronic device. Referring to fig. 2, for example, a first button 22 connected to the multi-port repeater 15 is provided on the housing, and the first button 22 is used for answering and hanging up control (for example, during call and live broadcast during instant messaging), or for starting and suspending control (for example, during control of audio and video playing), or for switching control (for example, during instant messaging such as call and live broadcast during operation of the switch 21).
Referring to fig. 3, the switch 21 includes an electronic switch U27 and a MOS transistor Q8, the electronic switch U27 is, for example, a single-pole double-throw switch, a first terminal Y +/Y-of the electronic switch U27 is connected to the multi-port repeater 15, a second terminal D +/D-is connected to the slave microphone array 13 through the audio processor 16, and a third terminal M +/M-is used for connecting to the digital-to-analog audio converter 1 through the audio processor 16. The switching control signal MODE _ SWITCH is connected to the MOS transistor Q8 to control the SWITCH switching of the electronic SWITCH U27, so as to realize the D +/D-transmission of the audio signal USB _ DP _ BT/USB _ DM _ BT collected from the microphone array 13 to the multiport transponder 15 at the second end. Or the third terminal M +/M-the audio signal USB _ DP _ XMOS/USB _ DM _ XMOS accessed from the multi-port repeater 15 is output to the digital-to-analog audio converter 1. The audio signals are input or output at the same time, and mutual interference is avoided. While also saving IO port resources of the audio processor 16.
In one embodiment, a second button 23 is also provided on the housing and connected to the audio processor 16, the second button 23 being used to control the volume of the audio played by the speaker 11.
The multifunctional electronic device further comprises a controller 24 arranged on the circuit board, wherein the controller 24 is connected with the first key 22 and the second key 23 and is used for identifying the key operation of the first key 22 and the second key 23 and outputting corresponding control signals to the audio processor 16 or the multi-port transponder 15.
In one embodiment, the second button 23 is transmitted to the controller 24 (such as a single chip microcomputer) through the multi-port repeater 15 according to the status of the button, and the controller 24 sends a control signal to the external host 200 according to the written program to control the listening/hanging-up status, or the pause/start status, or the switching control of the switch 21.
The second button 23 is used to control the volume of the multi-function electronic device, and thus, its control signal is output to the audio processor 16 to adjust the power at which the audio signal is played. Specifically, the second button 23 transmits an electrical signal generated by triggering or the length of the button pressing time to the controller 24 (such as a single chip), and the controller 24 can transmit the function state to be reached by the second button 23 to the audio processor 16 to adjust the volume according to the written program and control the LED lamp to conform to the lighting state of the written logic. It is understood that the key operations of the first and second keys 22 and 23 can modify the setting of the controller 24 as desired.
This multifunctional electronic equipment has the pickup function, can regard as the pickup of video conference or live and the equipment use of broadcast sound, can satisfy diversified demand. The use of the switch 21 may save I/O port resources of the multi-port repeater 15. In other embodiments, the switch 21 may not be used, and the multiport repeater 15 may transmit and receive audio signals using two different channels.
Referring to fig. 1, 2 and 4, the expansion Interface 14 includes a plurality of Universal Serial Bus (USB) interfaces 141 and a High Definition Multimedia Interface (HDMI) 142 connected to the main Interface 12.
The multifunctional electronic device in these embodiments may extend the USB devices connected to the external host 200 to transmit data by providing a plurality of USB interfaces 141, such as two or more USB interfaces, for example, USB devices conforming to the USB specification, such as a USB disk, a keyboard, a mouse, and a hard disk. For example, the USB interface 141 is 3.0 or less than 3.0, which can meet the high-speed data transmission requirement of Serial Advanced Technology Attachment (SATA)/Solid State Drive (SSD) interface hard Disk, and the highest supported speed is 5 Gbps.
The implementation working principle sends signals to the multi-port transponder 15 through the D-pin and the D + pin of the USB interface 141, the multi-port transponder 15 transmits the signals to the external host 200, the external host 200 can be a computer or a mobile phone, and the external host 200 detects the received USB equipment information and judges the type of the USB equipment. Then communicate with the signal type required by the external host 200 for data information transmission and exchange. Signals are transmitted and received through SSTX and SSTX + pins of the USB interface 141, and if the multiport transponder 15 detects that the device can transmit and receive signals, the device is determined to be a device with a rear end connected with USB 3.0. And then high-speed data transmission and reception to the external host 200 through the bridge function of the multi-port repeater 15.
In some embodiments, the main interface 12 adopts a Type-C interface, a Type-C protocol chip and a PD3.0 controller are provided on the Type-C interface, such as a VL103R chip, and a VBUS-managed power management unit of the Type-C is included inside the VL103R chip, so that it is possible to detect that power is supplied by the Type-C external host 200 when no PD power is input, and when a PD power is detected to be inserted, switch to a PD power supply mode, and transmit the PD power to the Type-C external host 200, so as to rapidly switch the power supply mode.
When the external host 200 with the Type-C interface is used for supplying power (no PD power), the power supplied by the external host 200 with the Type-C interface is transmitted to the integrated power switch converter chip (such as the IM2605 chip) through the VBUS, and the integrated power switch converter chip outputs a stable 5V power to supply power to the multifunctional electronic device.
When the PD power supply is used, the integrated power switch converter chip sends a signal to notify the VL103R chip, power supply information required by the VL103R chip to communicate with the Type-C external host 200 is transmitted back to the integrated power switch converter chip, the PD power supply accessed from the outside of the integrated power switch converter chip is transmitted to the integrated power switch converter chip, and the integrated power switch converter chip outputs a stable 5V power supply to supply power to the multifunctional electronic equipment. And the integrated power switch converter chip transmits the PD power to TYPE-C host equipment (such as a computer or a mobile phone) to charge the equipment.
In one embodiment, the multi-port repeater 15 is communicatively coupled to the audio processor 16 via a USB2.0 channel to conserve USB interface 141 resources for higher transmission speeds.
In one embodiment, the multiport repeater 15 includes a hub chip VL817, the audio processor 16 includes an audio processing chip XVF3000, the digital-to-analog audio converter 17 includes a digital-to-analog audio conversion chip HT5010,the audio processing chip XVF3000 converts the received audio signal into I2S digital audio signal pass I2The S channel pin is transmitted to the digital-to-analog audio conversion chip HT5010, the audio power amplifier 18 includes an audio power amplifier chip HT6872, and the HDMI interface 142 is communicatively connected to the main interface 12 through a video conversion chip.
This multi-functional electronic equipment working power supply can be by PD interface or Type-C interface automatic switch-over. The PD interface is configured to ensure a normal supply current for charging and to charge the external host 200. The principle of PD charging is that when a PD adaptor is plugged in, the PD adaptor sends a power supply capability message to the external host 200 with a corresponding power demand, and after the external host 200 receives the power supply capability message, it sends a power demand message to the PD adaptor, and the PD adaptor adjusts the voltage and current to supply power.
As long as there is an interface access in the HDMI interface 142, the Display devices will transfer the Extended Display Identification Data (EDID) information to the video conversion chip (for example, RTD2172L chip), the video conversion chip is connected to the external host 200 through the Type-C interface (host interface 12), and the received EDID signal will send the corresponding resolution and audio signal according to the Display requirement.
When a device is plugged into the USB interface 141, Process Identifier (PID) information of the device is connected to the external host 200 through the multi-port repeater 15 for identification, and a data signal is released to the multi-port repeater 15 for bridging.
Microphone input principle: when the external host 200 selects the microphone array 13 for input, the microphone array 13 collects signals and transmits the signals to the audio processor 16, and the audio processor 16 performs a compiling process on the received signals and transmits the signals to the multi-port repeater 15, and then uploads the signals to the external host 200 through the multi-port repeater 15.
The working principle of the loudspeaker 11 is as follows: when the external host 200 selects the speaker 11 to output, the external host 200 transmits the audio digital signal to the multiport repeater 15, then to the audio processor 16, then to the digital-to-analog audio converter 17 to process the digital audio signal into an analog signal, then to the audio power amplifier 18 to amplify the analog audio signal, and then transmits the analog audio signal to the speaker 11 to transmit the sound.
The multi-functional electronic equipment that this application embodiment provided has sound broadcast, concentrator, microphone array 13 radio reception and video switching function, and the function is diversified, and it is many to be suitable for the scene, and expansibility is strong.
The above are merely alternative embodiments of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims (11)
1. The multifunctional electronic equipment is characterized in that the multifunctional electronic equipment is provided with a main interface used for connecting an external host, a microphone array and a plurality of expansion interfaces used for transmitting data, the circuit board is provided with a multi-port repeater, an audio processor, a digital-analog audio converter and an audio power amplifier connected with the loudspeaker, the multi-port repeater, the audio processor, the digital-analog audio converter and the audio power amplifier are sequentially connected, and the expansion interfaces are connected with the main interface or the multi-port repeater; the microphone array is connected with the audio processor and used for receiving sound and outputting an audio signal to the audio processor; the audio processor with be connected with the change over switch between the multiport transponder, the change over switch include electronic switch and with MOS pipe that electronic switch is connected, electronic switch's first end is connected the multiport transponder, and the second end passes through the audio signal pin of audio processor and is connected to the microphone array, and the third end is used for passing through the audio signal pin of audio processor is connected to the digital-analog audio converter, MOS pipe access switch control signal control electronic switch's switch switches over in order to realize with the audio signal that main interface inserts from the multiport transponder transmit to the audio processor and will follow the audio signal of microphone array output from the audio processor transmits to the multiport transponder between do switch control.
2. The multifunctional electronic device according to claim 1, wherein said housing further comprises a first button connected to said multi-port transponder, said first button being used for answering and hanging up control, or for starting and pausing control, or for said switching control.
3. The multifunctional electronic device of claim 2, wherein a second button is disposed on the housing and connected to the audio processor, and the second button is configured to control the volume of audio played by the speaker.
4. The multifunctional electronic device according to claim 3, further comprising a controller disposed on the circuit board, wherein the controller is connected to the first key and the second key for identifying key operations of the first key and the second key and outputting corresponding control signals to the audio processor or the multi-port repeater.
5. The multi-function electronic device of claim 1, wherein the expansion interface comprises a USB interface connected to the multi-port repeater and an HDMI interface connected to the host interface.
6. The multi-function electronic device of claim 1, further comprising a power interface, the power interface being connected to the main interface.
7. The multifunctional electronic device of claim 6, wherein the primary interface is a Type-C interface and the power interface is a Type-C PD.
8. The multi-function electronic device of any one of claims 1-7, wherein the multi-port transponder is communicatively coupled to the audio processor via a USB2.0 channel.
9. Multifunction electronic device according to any one of claims 1 to 7, characterized in that said multiport transponder comprises a hub chip VL 817; the audio processor comprises an audio processing chip XVF 3000; the digital-to-analog audio converter comprises a digital-to-analog audio conversion chip HT 5010; the audio power amplifier comprises an audio power amplification chip HT 6872.
10. The multi-function electronic device of claim 5, wherein the HDMI interface is communicatively connected to the main interface via a video conversion chip.
11. The multi-function electronic device of any one of claims 1-7, wherein the multi-function electronic device is a sound box, a display screen, or a docking station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110988438.5A CN113778923A (en) | 2021-08-26 | 2021-08-26 | Multifunctional electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110988438.5A CN113778923A (en) | 2021-08-26 | 2021-08-26 | Multifunctional electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113778923A true CN113778923A (en) | 2021-12-10 |
Family
ID=78839479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110988438.5A Pending CN113778923A (en) | 2021-08-26 | 2021-08-26 | Multifunctional electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113778923A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115494972A (en) * | 2022-09-26 | 2022-12-20 | 深圳市湘凡科技有限公司 | KVM switcher with data inter-copying function |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253663A (en) * | 2014-09-18 | 2014-12-31 | 易程（苏州）智能系统有限公司 | Train full-featured digital-analog hybrid intelligent broadcast control box |
| CN207266232U (en) * | 2017-07-04 | 2018-04-20 | 江西创成微电子有限公司 | headset |
| CN208172750U (en) * | 2018-03-02 | 2018-11-30 | 深圳市山弯科技有限公司 | Converter for smart machine |
| CN209748649U (en) * | 2019-07-05 | 2019-12-06 | 控慧科技(上海)有限公司 | Double-channel audio communication circuit |
| CN212229529U (en) * | 2020-07-22 | 2020-12-25 | 深圳市明和诚电子有限公司 | Multifunctional docking station integrating sound card function |
| KR20210030116A (en) * | 2019-09-09 | 2021-03-17 | 엘지전자 주식회사 | Electronic device and image display apparatus |
| CN213638082U (en) * | 2020-11-03 | 2021-07-06 | 宁波鑫丰声悦科技股份有限公司 | Conference loudspeaker and conference loudspeaker system |
| CN214045730U (en) * | 2021-01-14 | 2021-08-24 | 深圳市新国都通信技术有限公司 | Office meeting device capable of expanding display based on TypeC interface |
-
2021
- 2021-08-26 CN CN202110988438.5A patent/CN113778923A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253663A (en) * | 2014-09-18 | 2014-12-31 | 易程（苏州）智能系统有限公司 | Train full-featured digital-analog hybrid intelligent broadcast control box |
| CN207266232U (en) * | 2017-07-04 | 2018-04-20 | 江西创成微电子有限公司 | headset |
| CN208172750U (en) * | 2018-03-02 | 2018-11-30 | 深圳市山弯科技有限公司 | Converter for smart machine |
| CN209748649U (en) * | 2019-07-05 | 2019-12-06 | 控慧科技(上海)有限公司 | Double-channel audio communication circuit |
| KR20210030116A (en) * | 2019-09-09 | 2021-03-17 | 엘지전자 주식회사 | Electronic device and image display apparatus |
| CN212229529U (en) * | 2020-07-22 | 2020-12-25 | 深圳市明和诚电子有限公司 | Multifunctional docking station integrating sound card function |
| CN213638082U (en) * | 2020-11-03 | 2021-07-06 | 宁波鑫丰声悦科技股份有限公司 | Conference loudspeaker and conference loudspeaker system |
| CN214045730U (en) * | 2021-01-14 | 2021-08-24 | 深圳市新国都通信技术有限公司 | Office meeting device capable of expanding display based on TypeC interface |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115494972A (en) * | 2022-09-26 | 2022-12-20 | 深圳市湘凡科技有限公司 | KVM switcher with data inter-copying function |
| CN115494972B (en) * | 2022-09-26 | 2023-12-29 | 深圳市湘凡科技有限公司 | KVM switch with data cross copy function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8095716B2 (en) | Method and system for communicating capability information from an accessory to a media player | |
| CN107643994B (en) | Terminal, terminal peripheral, signal sending and receiving method and data transmission system | |
| CN110300318B (en) | USB terminal interface circuit and USB terminal interface circuit control method | |
| US11431181B2 (en) | Wireless sound output device with charging function | |
| TW201337731A (en) | Electronic device, accessory, and method for detecting an accessory | |
| CN210692932U (en) | Interface conversion device and converter | |
| CN212517830U (en) | Multifunctional switching device | |
| WO2022147980A1 (en) | Interface circuit, smart device, and mobile phone | |
| JP2003005874A (en) | Card interface | |
| WO2018076628A1 (en) | Usb interface circuit, terminal, headset circuit and headset, and storage medium | |
| CN213339098U (en) | Wireless transmitting device | |
| CN113778923A (en) | Multifunctional electronic equipment | |
| CN109684241B (en) | Terminal and terminal equipment | |
| CN101626412A (en) | Mobile terminal circuit with multifunctional earphone socket and implementation method thereof | |
| WO2021141174A1 (en) | Wireless sound device set compatible with various devices | |
| CN112115087A (en) | Universal serial bus adapter and system | |
| CN217656710U (en) | Multifunctional electronic equipment | |
| CN216086918U (en) | Conference call device | |
| CN111987752A (en) | Switching equipment | |
| CN215647372U (en) | External sound card and audio system | |
| CN213182735U (en) | Universal serial bus adapter and system | |
| CN213638004U (en) | Multimedia intelligent conference machine control system | |
| CN220855652U (en) | Docking station | |
| CN114281745A (en) | Docking station capable of switching connection of multiple uplink hosts | |
| CN211296823U (en) | Audio playing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |