CN114845144B - Screen projection method, auxiliary screen projection device and storage medium - Google Patents
Screen projection method, auxiliary screen projection device and storage medium Download PDFInfo
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- CN114845144B CN114845144B CN202210448218.8A CN202210448218A CN114845144B CN 114845144 B CN114845144 B CN 114845144B CN 202210448218 A CN202210448218 A CN 202210448218A CN 114845144 B CN114845144 B CN 114845144B
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000005236 sound signal Effects 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 19
- 230000009467 reduction Effects 0.000 claims abstract description 12
- 230000008030 elimination Effects 0.000 claims abstract description 8
- 238000003379 elimination reaction Methods 0.000 claims abstract description 8
- 238000012795 verification Methods 0.000 claims description 25
- 238000004590 computer program Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 238000004422 calculation algorithm Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000012536 storage buffer Substances 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
Abstract
The application provides a screen projection method, an auxiliary screen projection device and a storage medium, wherein the screen projection method comprises the following steps: the auxiliary screen-throwing device establishes connection with the data source equipment to acquire screen-throwing data of the data source equipment, and simultaneously, the auxiliary screen-throwing device acquires an audio signal; the auxiliary screen throwing device performs mixing elimination, noise reduction and automatic gain processing on the received audio signals; according to the selection of a user, the processed audio signals and screen projection data are sent to screen projection equipment for real-time screen projection, or are sent to a storage module for storage and then are cached for screen projection. The screen projection method, the auxiliary screen projection device and the storage medium are used for upgrading the traditional conference room, are simple in connection, can call the independent cameras in the conference room, and improve the conference experience and conference efficiency of users.
Description
Technical Field
The application relates to the technical field of screen projection, in particular to a screen projection method, an auxiliary screen projection device and a storage medium.
Background
In recent years, the communication and communication modes among people have changed greatly from general offline communication and on-line communication to online communication, and people become a normal state by using remote conferences for a long time in the future, and the work of many people is shifted to online in the night. This transition is a futile, but the benefits of digital conversion are quite deep after one has gradually adapted to this way of online communication. Higher efficiency, lower cost, more flexible and changeable forms, and people have different experiences.
Whether a local conference or a remote conference is adopted, most of the conference is required to be used for screen projection for convenience in display, namely, contents displayed by small-screen mobile terminals such as notebook computers and mobile phones are projected onto screen projection equipment such as large-screen integrated computers and televisions, so that the conference participants can watch the contents conveniently. In the existing screen projection scheme, the mobile terminal is directly connected with the screen projection equipment, independent systems such as independent cameras and microphones in a conference room are required to be connected for many times, the subsystems can only be matched with a fixed system, a host computer is difficult to rapidly switch, and some subsystems cannot be connected with the screen projection equipment. For example, in a meeting with a notebook computer, only the camera and microphone of the notebook computer can be called, and it is difficult to call the original camera or microphone in the meeting room. In addition, the conventional direct-connection screen-throwing mode often has connection errors, needs to be set on the mobile equipment, and a common user often cannot know how to operate, so that an arrival meeting is delayed, and time cost is wasted. How to save the meeting preparation time for the participants and reduce the connection errors during screen projection is a current urgent problem to be solved.
Disclosure of Invention
The application aims to provide a screen projection method, an auxiliary screen projection device and a storage medium, which can solve the problem that an original camera or microphone of a conference room cannot be called by screen projection in the prior art, and also solve the problem of high connection error rate of direct-connection screen projection.
The application aims at realizing the following technical scheme:
in a first aspect, the present application provides a screen projection method, including the steps of:
the auxiliary screen-throwing device establishes connection with the data source equipment to acquire screen-throwing data of the data source equipment, and simultaneously, the auxiliary screen-throwing device acquires an audio signal;
the auxiliary screen throwing device performs mixing elimination, noise reduction and automatic gain processing on the received audio signals;
according to the selection of a user, the processed audio signals and screen projection data are sent to screen projection equipment for real-time screen projection, or are sent to a storage module for storage and then are cached for screen projection.
Furthermore, before the auxiliary screen-throwing device acquires the screen-throwing data of the data source equipment, the method further comprises the step of carrying out login verification on the data source equipment.
Further, the login verification method comprises the following steps: the storage module of the auxiliary screen throwing device stores preset user names and passwords, the login verification module compares the user names and passwords input by a user with user data stored in the storage module, and if the user data belong to the user data in the storage module, the auxiliary screen throwing device is connected with the data source equipment.
Further, when the auxiliary screen-throwing device receives the screen-throwing data of more than two data source devices at the same time, the screen-splitting quantity is set, and the screen-throwing devices are controlled to split the screen and throw the screen-throwing data of different data source devices at the same time.
Further, the method also comprises the step of capturing video data of the conference room by using a conference room independent camera and putting the video data on a screen-throwing device.
Further, a first time period and a second time period are set, and when the auxiliary screen projection device does not receive screen projection data in the first time period, or when the auxiliary screen projection device is disconnected with the screen projection equipment for the second time period, the auxiliary screen projection device enters a standby state.
Further, the auxiliary screen projection device controls the output mode of the loudspeaker according to whether the omnidirectional microphone is called, and when the microphone is called, the auxiliary screen projection device judges that the microphone is in a conference state at present, and switches the loudspeaker to be in the conference mode; otherwise, the loudspeaker is switched to be in the multimedia music mode.
In a second aspect, the present application provides an auxiliary screen projection device, including:
the receiving module is used for receiving the screen projection data of the data source equipment;
the sound acquisition module is used for acquiring the audio data of the environment and the data source equipment;
the sound processing module is used for performing mixing elimination, noise reduction and automatic gain processing on the audio signals acquired by the sound acquisition module;
the storage module is used for storing the screen throwing data and the processed audio signals;
the transmitting module is used for forwarding the screen throwing data received by the receiving module and the audio signals processed by the sound processing module in real time or forwarding the screen throwing data and the audio signals stored in the storage module;
the display control module is used for controlling the sending module to send data according to the mode of real-time screen projection or temporary storage buffer screen projection according to the screen projection mode and the screen division quantity selected by the user.
Furthermore, the auxiliary screen projection device further comprises a login verification module, wherein the login verification module is used for comparing the login information received by the receiving module with preset login information stored in the storage module and determining whether the login information received by the receiving module is in the preset login information.
In a third aspect, the present application provides a storage medium in which a computer program is stored, the computer program being executable to perform the above-described screen projection method.
According to the screen projection method, the auxiliary screen projection device and the storage medium, the auxiliary screen projection device is connected between the mobile terminal and the screen projection equipment, the auxiliary screen projection device is normally connected with the screen projection equipment such as an integrated machine in a long way, when the screen projection is performed, a user only needs to connect the mobile terminal such as a notebook computer with the auxiliary screen projection device, the auxiliary screen projection device can automatically acquire images and sound data of the mobile terminal, and the images and the sound data are transmitted to the screen projection equipment for display after noise reduction treatment. The auxiliary screen throwing device can be connected with equipment such as a camera of a conference room. The screen projection method, the auxiliary screen projection device and the storage medium are used for upgrading the traditional conference room, are simple in connection, can call the independent cameras in the conference room, and improve the conference experience and conference efficiency of users.
Drawings
FIG. 1 is a step diagram of a screen projection method of the present application;
FIG. 2 is a schematic diagram illustrating connection of the auxiliary screen projection device of the present application when applied;
fig. 3 is a schematic block diagram of an auxiliary screen projection device of the present application.
Detailed Description
Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present disclosure will become readily apparent to those skilled in the art from the following disclosure, which describes embodiments of the present disclosure by way of specific examples. It will be apparent that the described embodiments are merely some, but not all embodiments of the present disclosure. The disclosure may be embodied or practiced in other different specific embodiments, and details within the subject specification may be modified or changed from various points of view and applications without departing from the spirit of the disclosure. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
The screen projection method provided by the application comprises the following steps of:
step S1, the auxiliary screen throwing device establishes connection with the data source equipment to acquire screen throwing data of the data source equipment, and meanwhile, the auxiliary screen throwing device acquires an audio signal.
The data source equipment comprises mobile terminal equipment with small screens such as mobile phones and notebooks. The projection data includes audio data and image data.
In the application, the auxiliary screen throwing device can be connected with the data source equipment through the data line, and the stable signal transmission can be ensured and the signal transmission speed is high through the data line connection. The auxiliary screen throwing device can be provided with a Bluetooth module, and is connected with the data source equipment through the Bluetooth module. The connection is established in a Bluetooth mode, so that on-site wiring is reduced, and the mobile terminal can be moved after connection is established conveniently. When the auxiliary screen-throwing device and the data source equipment transmit image data and audio data in a Bluetooth mode, 2 data source equipment can be connected at the same time, and screen-throwing software of the mobile terminal needs to be installed in the data source equipment such as a notebook computer. The auxiliary screen-throwing device can reserve the data source equipment of the last 8 pairs for the next quick establishment. When the auxiliary screen-throwing device is connected with the data source equipment through the data line and transmits the image data and the audio data, the auxiliary screen-throwing device can transmit the image data and the audio data after successful connection, and screen-throwing software of the mobile terminal is not required to be installed in the notebook computer. When the auxiliary screen throwing device is connected with the notebook computer through a data line, screen throwing software can be automatically installed at the computer end.
The auxiliary screen throwing device is arranged in the conference room and is normally connected with screen throwing equipment such as an integrated machine. It is not necessary to disconnect the auxiliary screen-throwing device from the screen-throwing apparatus. The auxiliary screen throwing device is connected with the screen throwing equipment in a wireless mode. The auxiliary screen throwing device and the screen throwing equipment are respectively provided with a wireless module, and the connection between the auxiliary screen throwing device and the screen throwing equipment is established in a wireless network mode.
Preferably, before the auxiliary screen-throwing device acquires the screen-throwing data of the data source equipment, the method further comprises the step of carrying out login verification on the data source equipment.
The auxiliary screen throwing device is provided with a login verification module, the login verification module is provided with a user name and a password, a login interface is displayed on the data source device after the auxiliary screen throwing device is connected with the data source device, and after the user fills in the user name and the password, the login verification module performs identity verification on the login user.
The login verification method comprises the following steps: the storage module of the auxiliary screen throwing device stores preset user names and passwords, the login verification module compares the user names and passwords input by a user with user data stored in the storage module, and if the user data belong to the user data in the storage module, the auxiliary screen throwing device is successfully connected with the data source equipment, and the auxiliary screen throwing device starts to receive screen throwing data of the data source equipment. The login verification step is added, and the beneficial effects are that: the method can prevent that another data source device is connected with the auxiliary screen throwing device under the condition of unknowing in the process of carrying out a local conference or a remote conference by throwing the screen, and normal conference screen throwing data is interrupted due to the current incorrect connection. After login verification, the situation of incorrect connection cannot occur, and smooth progress of the conference can be ensured.
The sound acquisition module of the auxiliary screen throwing device acquires an audio signal.
And S2, performing mixing elimination, noise reduction and automatic gain processing on the received audio signals by the auxiliary screen throwing device.
The sound receiving hardware equipment of the auxiliary screen throwing device adopts an omnidirectional microphone, wherein the omnidirectional microphone is a four-array microphone plus 5W loudspeaker, and the sound receiving hardware equipment is provided with a 3A algorithm. The audio signal is collected by the sound acquisition module of the auxiliary screen throwing device, the audio pretreatment processes such as mixing elimination, noise reduction, automatic gain control and the like are carried out by the sound processing module, and the audio signal is encoded by the audio encoder. The pretreatment processes, acoustic Echo Cancelling (AEC), automatic Gain Control (AGC), active Noise Control (ANC, also referred to as noise cancellation, noise suppression), are commonly referred to as 3A.
The processing sequence of the audio 3A processing in the three different application scenarios is also different, for example, in WebRTC, the audio data sequentially passes through AEC and NS (noise suppression) or NS and AECM (AECM is an algorithm specially created by WebRTC for a mobile terminal, the calculation amount is low, and AEC is created by a PC). AEC is an echo cancellation algorithm. When a device plays sound after multiple reflections in space, the echo can be captured again by the microphone and collected into the auxiliary screen throwing device. At this time, the audio input has both a spatially reflected echo and a local speaking sound, and if the sound processing module is absent, this means that the speaker can always hear the own sound echo in the call, which is a very bad experience. The AEC is used for tracking the echo through the played reference signal, removing the echo from the acquired signal, and then removing noise through noise reduction. The AECM is analyzed by acquiring clean and noise data after the NS module, and the AEC is analyzed by directly acquiring noise data before the NS module. After the audio data is processed by AEC and NS, AGC processing is performed, which includes AAGC (automatic gain control in analog domain) and DAGC (automatic gain control in digital domain). The main function of the AAGC is to adjust the input signal (mostly used for the PC end, the mobile end generally has no system interface for inputting volume) through the system acquisition volume setting interface, such as adjusting parameters of acquisition volume by means of API on Windows. AAGC can bring about obvious quality optimization for input audio data, such as improving signal-to-noise ratio, avoiding input signal overflow, and the like. However, due to the requirement of cross-platform, a framework facing to multi-platform equipment needs to be constructed, different input volumes can be generated on different input platforms and equipment, and DAGC can adjust the signal to the expected size (amplitude or energy) as much as possible according to the tracking of the input signal, so that the volume difference caused by the collection of different equipment is avoided. And the Audio data after the AGC processing can enter the Audio Encode to carry out coding operation.
And step S3, according to the selection of a user, the processed audio data and the screen projection data are sent to the screen projection equipment for real-time screen projection, or are sent to the storage module for storage and then are cached for screen projection.
The auxiliary screen-throwing device provided by the application has a real-time screen-throwing mode and a cache screen-throwing mode. The real-time screen projection or the cache screen projection can be performed according to the selection of the user.
The auxiliary screen throwing device and the screen throwing equipment transmit data in a wireless mode.
Further, when the auxiliary screen-throwing device receives the screen-throwing data of more than two data source devices at the same time, the screen-splitting quantity is set, and the screen-throwing devices are controlled to split the screen and throw the screen-throwing data of different data source devices at the same time.
Furthermore, the screen projection method further comprises the step of capturing video data of the conference room by using the independent camera of the conference room and projecting the video data on the screen projection equipment.
The independent cameras of the conference room are connected with the auxiliary screen throwing device, video data of a conference scene are captured by the independent cameras, and the video data are thrown on the screen throwing equipment as other screen throwing data.
Further, when the auxiliary screen projection device does not receive the screen projection data in the first set time period, or when the auxiliary screen projection device is disconnected with the screen projection device for the second set time period, the auxiliary screen projection device enters a standby state. The first setting time period and the second setting time period may be the same or different, and are set according to the needs of the user. In the present application, the first set period of time and the second set period of time take the same value, preferably 5 minutes. The specific time period set should not be construed as limiting the application.
Furthermore, the auxiliary screen projection device controls the output mode of the loudspeaker according to whether the omnidirectional microphone is called, when the microphone is called, the current conference state is judged, the loudspeaker is switched to the conference mode, the conference mode is optimized for human voice, the suppression is carried out at the heavy bass end, the middle voice is highlighted, the reduction degree is real, the human voice is clear and clear, and the tooth voice, the throat voice and the turbidity feeling are reduced; when the microphone is not called, the loudspeaker is switched to a multimedia music mode, the music mode emphasizes that the bass is plump and thick and layered, the midrange is bright and clear, and the high frequency is flexible.
The screen projection method can be used in scenes such as local conferences, remote voice conferences, remote video conferences and the like.
During local conference, the content on the notebook computer needs to be thrown onto a conference room large screen, so that people can more conveniently see the content. The notebook computer is connected with the auxiliary screen throwing device, and if the auxiliary screen throwing device is in wired connection, the notebook computer can throw the content of the notebook computer screen on a large screen of the all-in-one machine by one key without any setting. During a remote voice conference, the notebook is projected to the large screen, and local conference participants can communicate with remote conference participants in voice. The screen is required to be thrown locally, and local pickup is required, namely, a microphone and a loudspeaker of an auxiliary screen throwing device are called, voice of local conference participants is collected, and voice of remote conference participants is output. During a remote video conference, the notebook is projected to the large screen, and local conference participants can communicate with remote conference participants in voice and can see each other. The independent cameras in the local conference room can be accessed, and the conference room scene is put in one key. The auxiliary screen throwing device is normally connected with screen throwing equipment such as an integrated machine, when the screen throwing is performed, a user only needs to connect a mobile terminal such as a notebook computer with the auxiliary screen throwing device, the auxiliary screen throwing device can automatically acquire images and sound data of the mobile terminal, and the images and the sound data are transmitted to the screen throwing equipment for display after noise reduction treatment. The auxiliary screen throwing device can be connected with equipment such as a camera of a conference room. The screen projection method, the auxiliary screen projection device and the storage medium are used for upgrading the traditional conference room, are simple in connection, can call the independent cameras in the conference room, and improve the experience and efficiency of the conference.
The application also provides an auxiliary screen throwing device, which comprises:
the receiving module is used for receiving the screen projection data of the data source equipment;
in the application, the auxiliary screen throwing device is provided with the Bluetooth module, or is connected with the data source equipment through a data line, and the screen throwing data is transmitted to the receiving module through the data line, or is transmitted to the receiving module through a Bluetooth mode.
The sound acquisition module is used for acquiring the audio data of the environment and the data source equipment;
the sound processing module is used for performing mixing elimination, noise reduction and automatic gain processing on the audio signals acquired by the sound acquisition module;
the storage module is used for storing the screen throwing data and the processed audio signals;
the transmitting module is used for forwarding the screen throwing data received by the receiving module and the audio signals processed by the sound processing module in real time or forwarding the screen throwing data and the audio signals stored in the storage module;
the transmission of the present application is wireless. The auxiliary screen throwing device is provided with a wireless module, screen throwing equipment such as an integrated machine is also provided with the wireless module, the auxiliary screen throwing device is in wireless connection with the screen throwing equipment, and screen throwing data and audio signals are sent through a wireless network.
The display control module is used for controlling the sending module to send data according to the mode of real-time screen projection or temporary storage buffer screen projection according to the screen projection mode and the screen division quantity selected by the user.
Preferably, the auxiliary screen projection device further comprises a login verification module, wherein the login verification module is used for comparing the login information received by the receiving module with preset login information stored in the storage module, and determining whether the login information received by the receiving module is in the preset login information. The login verification module is added to prevent that another data source device is connected with the auxiliary screen throwing device under the condition of blindness in the process of throwing the screen to carry out a local conference or a remote conference, and normal conference screen throwing data is interrupted due to the fact that the error connection is carried out. After login verification, the situation of incorrect connection cannot occur, and smooth progress of the conference can be ensured.
The hardware configuration introduction of the auxiliary screen throwing device comprises the following steps:
the auxiliary screen throwing device is used for positioning small and medium-sized meeting rooms, and is matched with an intelligent large screen to optimize the experience of local meetings and remote meetings. The auxiliary screen throwing device has a one-key screen throwing function, and can be connected to obtain a hot spot account number password of the integrated machine after being connected with the integrated machine developed by the inventor in a wired manner. The sound collection in the hardware device adopts 8 omnidirectional microphones with annular top surfaces. The diameter of the microphone is not less than 4cm, preferably 6cm, and the pick-up distance is 4 m and half. The omnidirectional microphone is preferably chosen to be back-sounding (not bottom-sounding) so that it is as close to the outside as possible, and if the height is insufficient, the padding needs to be taken into account. Wired and wireless extension microphones are supported. The auxiliary screen throwing device provided by the application can continuously work for more than 12 hours under the condition of no commercial power and has the extra-long battery working time, so that the requirements of some emergency conferences under the condition of no commercial power can be met.
The voice playing in the hardware device adopts a 2-inch full-band cavity loudspeaker, so that the voice and the music can be enhanced. The full-band cavity loudspeaker has two play modes: music mode: 150 Hz-16 kHz, conference mode: 150 Hz-7 kHz. The play mode of the loudspeaker is determined according to whether the microphone is invoked. When the microphone is being called, judging that the microphone is in a conference state at present, and switching the playing mode of the loudspeaker to be a conference mode; when the microphone is not called, the playing mode of the loudspeaker is switched to be a multimedia music mode. The auxiliary screen throwing device is provided with a WiFi module, and the WIFI module is responsible for transmitting video pictures and audio output by mobile terminals such as a notebook computer to large-screen throwing equipment such as an integrated machine and receiving camera and microphone data of the large-screen throwing equipment such as the integrated machine. The auxiliary screen throwing device is provided with a classical Bluetooth module and is in charge of being connected with a notebook computer in a wireless mode, and a microphone and a loudspeaker are expanded. The multifunctional typeC interface of the notebook computer is occupied by the auxiliary screen throwing device, and can be expanded to an interface of the auxiliary screen throwing device for inserting products such as a mouse and a USB flash disk and can also be charged externally.
The present application also provides a storage medium in which a computer program is stored, which is operable to perform the screen projection method of the present application.
In the present application, unless expressly stated or limited otherwise, a first feature "on" a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. The meaning of "a plurality of" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The above description is for the purpose of illustrating the embodiments of the present application and is not to be construed as limiting the application, but is intended to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the application.
Claims (6)
1. The screen projection method is characterized by comprising the following steps of:
the auxiliary screen-throwing device establishes connection with the data source equipment, performs login verification on the data source equipment, acquires screen-throwing data of the data source equipment, and simultaneously, the auxiliary screen-throwing device acquires an audio signal; the login verification method comprises the following steps: the method comprises the steps that a preset user name and a preset password are stored in a storage module of an auxiliary screen throwing device, a login verification module compares the user name and the password input by a user with user data stored in the storage module, and if the user data belong to the user data in the storage module, the auxiliary screen throwing device is connected with data source equipment;
the auxiliary screen throwing device performs mixing elimination, noise reduction and automatic gain processing on the received audio signals;
according to the selection of a user, the processed audio signals and screen projection data are sent to screen projection equipment for real-time screen projection, or are sent to a storage module for storage and then are cached for screen projection;
the conference room video data are captured by the independent cameras of the conference room and put on the screen throwing device, specifically, the independent cameras of the conference room are connected with the auxiliary screen throwing device, the video data of a conference scene are captured by the independent cameras, and the video data are put on the screen throwing device as other screen throwing data.
2. The screen projection method according to claim 1, wherein when the auxiliary screen projection device receives the screen projection data of more than two data source devices at the same time, the screen division number is set, and the screen projection devices are controlled to divide the screen and simultaneously project the screen projection data of different data source devices.
3. The screen projection method according to claim 1, wherein a first time period and a second time period are set, and the auxiliary screen projection device enters a standby state when the auxiliary screen projection device does not receive screen projection data in the first time period or when the auxiliary screen projection device is disconnected from the screen projection device for the second time period.
4. The method according to claim 1, wherein the auxiliary screen projection device controls the output mode of the speaker according to whether the omnidirectional microphone is called, and when the microphone is called, the auxiliary screen projection device determines that the microphone is in a conference state currently, and switches the speaker to the conference mode; otherwise, the loudspeaker is switched to be in the multimedia music mode.
5. An auxiliary screen throwing device, which is characterized by comprising:
the login verification module is used for assisting the screen throwing device to establish connection with the data source equipment and carrying out login verification on the data source equipment; the login verification method comprises the following steps: the method comprises the steps that a preset user name and a preset password are stored in a storage module of an auxiliary screen throwing device, a login verification module compares the user name and the password input by a user with user data stored in the storage module, and if the user data belong to the user data in the storage module, the auxiliary screen throwing device is connected with data source equipment;
the receiving module is used for receiving the screen projection data of the data source equipment;
the sound acquisition module is used for acquiring the audio data of the environment and the data source equipment;
the sound processing module is used for performing mixing elimination, noise reduction and automatic gain processing on the audio signals acquired by the sound acquisition module;
the storage module is used for storing the screen throwing data and the processed audio signals;
the transmitting module is used for forwarding the screen throwing data received by the receiving module and the audio signals processed by the sound processing module in real time or forwarding the screen throwing data and the audio signals stored in the storage module;
the display control module is used for controlling the sending module to send data according to a screen throwing mode selected by a user and the screen splitting quantity, and the display control module also comprises a step of capturing video data of the conference room by utilizing an independent camera of the conference room and throwing the video data on screen throwing equipment, specifically, the independent camera of the conference room is connected with the auxiliary screen throwing device, and capturing video data of a conference scene by utilizing the independent camera and throwing the video data on screen throwing equipment as another screen throwing data.
6. A storage medium in which a computer program is stored, characterized in that the computer program is executable to perform the screen projection method according to any one of claims 1 to 4.
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