CN111669644A - Touch screen display - Google Patents
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- CN111669644A CN111669644A CN202010654199.5A CN202010654199A CN111669644A CN 111669644 A CN111669644 A CN 111669644A CN 202010654199 A CN202010654199 A CN 202010654199A CN 111669644 A CN111669644 A CN 111669644A
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- 239000003990 capacitor Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
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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
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a touch screen display, wherein the touch screen display comprises: a display main body; the base is arranged on the display main body; the NFC tag is attached to the surface of the base and used for outputting a voltage signal when the mobile terminal touches; and the WIFI screen projection module is arranged in the base, is mutually electrically connected with the NFC tag, is used for receiving a voltage signal output by the NFC tag, and controls the WIFI screen projection module to be wirelessly connected with the mobile terminal so as to transmit audio and video signals of the mobile terminal. The technical scheme of the invention improves the portability of the display.
Description
Technical Field
The invention relates to the technical field of displays, in particular to a touch screen projection display.
Background
The mainstream peripheral interfaces of the current display are HDMI, DP, DVI and the like, the peripheral interfaces are relatively fixed, new interfaces designed by the current new intelligent equipment are born for improving the user experience of the intelligent equipment on the basis of being compatible with the current mainstream interfaces, and the input interfaces of the mainstream are determined by the specification of the display main control MCU and cannot be directly designed into the current new interface specification. One method is that an interface conversion chip is directly added on a mainboard of the display to design, so that the cost of the mainboard is increased, and the complete machine structure matched with the mainboard is also greatly changed; in another mode, an external interface conversion head is used, so that the use cost of the display is increased, the interface conversion head is repeatedly plugged and pulled, the peripheral interface on the interface conversion head and the display is also abraded, and the service life of the whole display is shortened.
The use that is present display has the limitation promptly, be connected with specific equipment through fixed interface, can't compromise the new interface type of designing for increasing user experience at present, use to external signal equipment has certain limitation, can increase user's use cost through the method of external adapter, the operation of plug repeatedly can increase the risk that display mainboard interface damaged, external device's various line has simultaneously increased the loaded down with trivial details nature of display use operation, the desktop that is occupied by various data lines also can seem disorderly.
Disclosure of Invention
The invention mainly aims to provide a touch screen display, aiming at improving the portability of the display.
In order to achieve the above object, the present invention provides a touch screen display, comprising:
a display main body;
a base disposed on the display main body;
the NFC tag is attached to the surface of the base and used for outputting a voltage signal when the mobile terminal touches;
and the WIFI screen projection module is arranged in the base, is electrically connected with the NFC tag, and is used for receiving the voltage signal output by the NFC tag and controlling the voltage signal to be wirelessly connected with the mobile terminal so as to transmit the audio and video signal of the mobile terminal.
Optionally, the touch screen display further comprises:
the signal processing module is arranged in the display main body, the input end of the signal processing module is connected with the output end of the WIFI screen projecting module, and the signal processing module is used for processing the audio and video signals transmitted by the WIFI screen projecting module;
and the display module is arranged in the display main body and used for receiving the audio and video signals processed by the signal processing module and displaying the audio and video of the mobile terminal.
Optionally, the touch screen display further comprises a first resistor, a second resistor, a first capacitor and a first inductor;
the input end of the NFC tag is in signal connection with the mobile terminal, the output end of the NFC tag is connected with the first end of the first resistor, the second end of the first resistor, the first end of the first capacitor and the first end of the first inductor are mutually connected, the second end of the first capacitor is grounded, the second end of the first inductor is connected with the first end of the second resistor and is connected with the input end of the WIFI screen projection module, and the second end of the second resistor is a power supply end.
Optionally, the NFC tag includes an NFC antenna coil and an NFC tag chip;
the NFC antenna coil is an input end of the NFC tag, an output end of the NFC antenna coil is connected with an input end of the NFC tag chip, and an output end of the NFC tag chip is an output end of the NFC tag;
the NFC antenna coil is used for receiving the mobile terminal identification signal and outputting the mobile terminal identification signal to the NFC tag chip;
and the NFC tag chip is used for controlling an output voltage signal to the WIFI screen projection module when the identification signal received by the NFC antenna coil is consistent with a preset identification signal.
Optionally, the range of the voltage signal at the output end of the NFC tag is 1.45V-1.75V.
Optionally, the NFC tag chip includes a storage module, configured to store preset identification information, so as to compare the preset identification information with identification information of the mobile terminal.
Optionally, the touch screen desktop display further comprises a wired connection module;
the wired connection module is connected with the signal processing module, and is used for connecting signal input equipment so as to transmit audio and video signals of the signal input equipment.
Optionally, the touch screen display further comprises a signal channel switching key;
the signal channel switching key is arranged on the display main body and is mutually connected with the signal processing module, and the signal channel switching key is used for controlling the switching of the WIFI screen projecting module and the wired connection module.
Optionally, the touch screen display further comprises a horizontal and vertical screen switching key;
the transverse and vertical screen switching key is arranged on the display main body and electrically connected with the signal processing module, and is used for controlling the transverse screen/vertical screen display state of the display module.
Optionally, the touch screen display further comprises a wireless charging module;
the wireless charging module is arranged in the base and used for outputting a direct current power supply to the mobile terminal so as to charge the mobile terminal.
Optionally, the wireless charging module comprises an AC-DC circuit, a frequency converter and a power output coil;
the input end of the AC-DC circuit is connected with a commercial power alternating current power supply, the output end of the AC-DC circuit is connected with the input end of the frequency converter, and the output end of the frequency converter is mutually connected with the power output coil;
the AC-DC circuit is used for converting an input commercial power alternating current power supply into a direct current power supply and outputting the direct current power supply to the frequency converter;
the frequency converter is used for converting the direct-current power supply so as to output the converted alternating-current power supply to the electric power output coil;
and the power output coil is used for outputting the converted alternating current power supply to the mobile terminal.
According to the technical scheme, the touch screen projection display comprises a display main body, a base, an NFC label, a WIFI screen projection module, a signal processing module and a display module, wherein the display main body is arranged integrally with the display main body, the NFC label is attached to the surface of the base, the WIFI screen projection module is arranged in the base, and the signal processing module and the display module are arranged in the display main body. When the mobile terminal needs to wirelessly project a screen to a display, the mobile terminal is directly touched with the NFC label on the display base, the NFC label outputs a voltage signal as an interrupt signal to the WIFI screen projecting module, the NFC label is identified through preset identification information and the identification information of the mobile terminal, and after the comparison is consistent, the mobile terminal is controlled to be wirelessly connected with the display. The WIFI screen projection module is connected with the mobile terminal to transmit the audio and video signals of the mobile terminal to the signal processing module of the display for processing, and the audio and video signals of the mobile terminal are controlled to be played on the display module. The problem of in the correlation technique through fixed interface and specific equipment connection, can't compromise the new interface type that designs for increasing user experience at present, have certain limitation to the use of external signal equipment to and can increase user's use cost through the method of external adapter, the operation of repeated plug can increase the risk that display mainboard interface damaged, various lines of external signal input device have simultaneously increased the loaded down with trivial details of display use operation. The technical scheme of the invention improves the convenience of the display.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of a touch screen display according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a touch screen display according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an internal structure of an NFC tag in the touch screen display according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a wireless charging module in a touch screen display according to an embodiment of the invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Display |
31 | |
| 20 | |
81 | AC- |
| 30 | |
82 | |
| 40 | WIFI |
83 | |
| 50 | Signal processing module | R1 | A |
| 60 | Display module | R2 | |
| 70 | Wired connection module | C1 | |
| 80 | Wireless charging module | L1 | First inductor |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a touch screen display, which is used for quickly and conveniently wirelessly connecting mobile equipment. In the correlation technique, be connected with specific equipment through fixed interface, can't compromise the new interface type of designing for increasing user experience at present, use to external signal equipment has certain limitation, can increase user's use cost through the method of external adapter, the operation of plug repeatedly can increase the risk that display mainboard interface damaged, the various line of external equipment has simultaneously increased the loaded down with trivial details nature that the display used the operation, the desktop that is occupied by various data lines also can seem mixed and disorderly.
Although some displays are provided with wireless screen projection modules, the wireless screen projection modules are generally divided into two types, for example, an android system mobile phone and an IOS system mobile phone, the first type is that a mobile phone end is opened to set a wireless screen projection option of the mobile phone and the wireless screen projection option is opened, a list is searched in the wireless screen projection option to find the name of the wireless screen projection module built in the display, and after the connection is successful, audio and video information of the android system mobile phone end can be projected to the display to be played. At this time, if the audio/video played by the mobile phone end is to be transmitted to the display without affecting other operations of the mobile phone, then the mobile phone needs to be opened to set wireless connection options, a WIFI search list is opened, the hotspot name sent by the wireless screen projection module in the display is found, after the mobile phone end inputs the corresponding password to connect the hotspot successfully, the browser is opened to input the local area network IP address of the hot spot sent by the wireless screen projection module in the display according to the prompt of the display end, a plurality of setting options of the wireless screen projection module of the display are displayed on the webpage of the browser, the wireless screen projection module can be accessed to a router of a local area network through network setting options, so that the wireless screen projection module of the mobile phone end and the wireless screen projection module of the display are in the same local area network, then, the audio and video played by the mobile phone end can be delivered to a display screen, and meanwhile, the mobile phone can quit the player to perform other operations; the other one is that all relevant steps of will connecting are all written to and are thrown the screen APP in, and after the display switches to the wireless screen passageway of throwing, can show a two-dimensional code on the display, no matter be android system cell-phone, still IOS system cell-phone only need scan the two-dimensional code, the cell-phone end will be opened the cell-phone browser automatically and enter into corresponding throwing screen APP and download the interface, throw screen APP download installation after accomplishing, open and throw screen APP and will appear throwing the screen connection operation.
However, these wireless screen projection operations are still relatively cumbersome, which may reduce the user experience in the actual use process, and is relatively low in convenience.
In order to solve the above problem, in an embodiment of the present invention, as shown in fig. 1, the touch screen display includes:
a display main body 10;
a base 20 disposed on the display main body 10;
the NFC tag 30 is attached to the surface of the base 20 and used for outputting a voltage signal when the mobile terminal touches;
and the WIFI screen projection module 40 is arranged in the base 20, is electrically connected with the NFC tag 30, and is used for receiving the voltage signal output by the NFC tag 30 and controlling the voltage signal to be wirelessly connected with the mobile terminal so as to transmit the audio and video signal of the mobile terminal.
In this embodiment, the touch screen display further includes: the signal processing module 50 is arranged in the display main body 10, an input end of the signal processing module 50 is connected with an output end of the WIFI screen projecting module 40, and the signal processing module 50 is used for processing audio and video signals transmitted by the WIFI screen projecting module 40;
and the display module 60 is arranged on the display main body 10, and the display module 60 is used for receiving the audio and video signals processed by the signal processing module 50 and displaying the audio and video of the mobile terminal.
In this embodiment, the touch screen display further includes a first resistor R1, a second resistor R2, a first capacitor C1, and a first inductor L1;
the input end of the NFC tag 30 is in signal connection with a mobile terminal, the output end of the NFC tag 30 is connected to a first end of a first resistor R1, a second end of the first resistor R1, a first end of a first capacitor C1 and a first end of a first inductor L1 are connected to each other, a second end of the first capacitor C1 is grounded, a second end of the first inductor L1 is connected to a first end of a second resistor R2 and to the input end of the WIFI screen projecting module 40, and a second end of the second resistor R2 is a power supply end.
The NFC tag 30 includes an NFC antenna coil and an NFC tag chip;
the NFC antenna coil is an input end of the NFC tag 30, an output end of the NFC antenna coil is connected with an input end of the NFC tag chip, and an output end of the NFC tag chip is an output end of the NFC tag 30;
the NFC antenna coil is used for receiving the mobile terminal identification signal and outputting the mobile terminal identification signal to the NFC tag chip;
and the NFC tag chip is used for controlling output voltage signals to the WIFI screen projection module 40 when the identification signals received by the NFC antenna coil are consistent with preset identification signals. The NFC tag chip includes a storage module 31 for storing preset identification information to be compared with the identification information of the mobile terminal. It can be understood that the preset identification signal stored in the storage module 31 of the NFC tag 30 is information such as an address and a device name of the mobile terminal.
In the above embodiment, as shown in fig. 3, the NFC tag 30 further includes a radio frequency front end, a reset control, a power management, a clock management, an encoding, a decoding, an internal counter, and the like. The NFC antenna coil on the NFC tag 30 is coupled with the electromagnetic energy and transmits the electromagnetic energy to an NFC tag chip connected with the NFC antenna coil, and the NFC tag chip converts the electromagnetic energy into a power supply required by circuits such as a microcontroller, a codec and a storage module 31 in the NFC tag chip through a rectifying circuit; when circuits such as the microcontroller, the codec and the storage module 31 start to work after being powered on, preset identification information stored in the NFC tag chip can be compared with identification information of the mobile terminal through the NFC antenna coil, and when the identification information is consistent, the output voltage signal is controlled to the WIFI screen projection module 40.
In this embodiment, the touched mobile terminal can be directly identified by the NFC tag 30 attached to the surface of the base 20, and after the identification is passed, a voltage signal is output to the WIFI screen projection module 40, so that the WIFI screen projection module 40 is wirelessly connected to the mobile terminal. The WIFI screen projection module 40 adds a signal receiving end without an external interface to the display, and the signal transmission of the mobile terminal can be directly completed through wireless data transmission. The WIFI screen projection module 40 can be used for realizing communication with the mobile terminal, and after the WIFI screen projection module 40 is connected with the mobile terminal, multimedia files in the mobile terminal can be projected on a screen to be displayed on a display. The user gets rid of the restriction of various signal interfaces and adapters, and the user can transmit pictures without connecting the mobile terminal and the display through cables, so that a better display effect is provided for the user, and the convenience of mobile office and entertainment is improved.
In the above embodiment, the mobile terminal implementing the above operation needs to support the NFC function, and after the mobile terminal approaches the NFC tag 30 on the base 20, the information stored on the NFC tag 30 can be quickly identified, the wireless screen projection function of the mobile terminal is quickly turned on, and the WIFI screen projection module 40 of the base 20 is automatically connected, where the speed of issuing the information transmission instruction is millisecond-level. The compatibility of the display is improved, meanwhile, the application scene is not limited to complicated wiring of various signal input devices any more due to wireless screen projection, the mobility of the display is improved, and the problem that desktop connecting wires are disordered is avoided.
Specifically, that is, the WIFI screen projection module 40 is built in the base 20 of the display, and the NFC tag 30 recorded with specific instruction information is attached to the surface of the base 20, the WIFI screen projection module 40 adopts a WIFI direct connection communication mode, and can be used as a slave device to send a WIFI hotspot signal, a mobile terminal ready for screen projection is used as a master device, after the mobile terminal touches the specific NFC tag 30 on the display base 20, at this time, when an NFC tag 30 circuit is read by the mobile terminal, as shown in fig. 2, an output terminal FD pin of the NFC tag 30 can provide a set of voltage signals of 1.45-1.75V as an interrupt signal to notify a master MCU of the WIFI screen projection module 40 to enter a waiting connection state, the mobile terminal can directly read information such as a WIFI address and a device name stored in a memory of an NFC tag chip, and then directly initiate a connection command, thereby realizing fast connection of WIFI. Further, as for the functions of the NFC tag 30, different function differentiation can be performed according to different requirements of a user, for example, the NFC tag 30 is brushed by the mobile terminal, and a WIFI connection is established with the display; the mobile terminal swipes the NFC tag 30 again and may terminate the connection or put the display into a sleep mode to save power consumption.
It should be noted that, the specific principle of implementing wireless screen projection between the mobile terminal and the display in the scheme is as follows: after the mobile terminal is connected with the WIFI screen projection module 40 through the WIFI P2P, the mobile terminal negotiates with the WIFI screen projection module 40 through the RTSP protocol, the mobile terminal inquires about information such as audio/video support format, audio/video decoding resolution, compression ratio and the like of the WIFI screen projection module 40, confirms that the mobile terminal encodes and packages multimedia information stored in the mobile terminal into a specific negotiated format and size, simultaneously controls and adjusts the resolution of the audio/video in real time according to the quality of a current WIFI signal, packs the audio/video into TS or PES audio/video streams after negotiation is completed, transmits the audio/video streams into a segment of data stream to the WIFI screen projection module 40 through the HTTP/UDP protocol of the WIFI network, decodes the audio/video streams through the MCU in the screen projection module 40 after the WIFI screen projection module 40 receives the transmitted continuous data stream, loads the audio/video streams into the memory at the same time, and transmits the data to the signal processing module 50 of the display, finally, the picture is smoothly displayed on the display module 60 of the display.
In this embodiment, the negotiated format may be data types such as Micro-USB and Type-C, so as to control the display module 60 to play the decoded data such as Micro-USB and Type-C through the signal processing module 50. It can be understood that the wireless connection between the display and the mobile terminal is via WIFI communication. Specifically, under the condition that a wireless network exists, the display and the mobile terminal realize data transmission through the same local area network, and realize same-screen display or screen projection display; under the condition that no wireless network exists, the display and the mobile terminal can be in the same local area network in a mode of starting a display hotspot to perform on-screen display. According to the scheme, the screen of the multimedia file in the mobile terminal is projected through the WIFI screen projection module 40, the problem of poor compatibility of a hardware interface is solved, and the compatibility of a display is improved.
It should be noted that, since the WIFI screen projection module 40 is directly transmitted through the WIFI protocol, after the data transmitted by the WIFI protocol is received by the WIFI screen projection module 40, the received data cannot be directly transmitted to the signal processing module 50, a decoder in the WIFI screen projection module 40 is required to decode the data into a data Type that can be identified by the display module 60, such as a data Type of Micro-USB or Type-C; and then transmitted to the signal processing module 50, and the decoded data is displayed on the display module 60 in the form of pictures and sounds.
In the above embodiment, the storage module 31 in the NFC tag 30 may be, but is not limited to, a Programmable Read Only Memory (PROM), an Erasable Programmable Read Only Memory (EPROM), a charged erasable programmable read only memory (EEPROM), and the like. The display module 60 may be, but is not limited to, an LED display screen, an LCD display screen, etc., and is configured according to the actual application. The signal processing module 50 is used for feeding back the data such as Micro-USB and Type-C decoded by the WIFI screen projection module 40 to the display module 60 for playing. That is, the multimedia file is acquired from the mobile terminal through the WIFI screen projection module 40, and the display module 60 is controlled to play the multimedia file acquired from the WIFI screen projection module 40. It is understood that the signal processing module 50 may be, but is not limited to, a DSP, MCU or other programmable logic device.
The display in the above-mentioned scheme may be, but is not limited to, a desktop display, a portable display, and the like.
According to the technical scheme, the touch screen projection display comprises a display main body 10, a base 20, an NFC label 30, a WIFI screen projection module 40, a signal processing module 50 and a display module 60, wherein the display main body 10 and the base 20 are integrally arranged with the display main body 10, the NFC label 30 is attached to the surface of the base 20, and the WIFI screen projection module 40, the signal processing module 50 and the display module 60 are arranged in the display main body 10. When the mobile terminal needs to wirelessly project a screen to a display, the mobile terminal is directly touched with the NFC label 30 on the display base, the NFC label 30 outputs a voltage signal as an interrupt signal to the WIFI screen projecting module 40, the NFC label 30 identifies the voltage signal through preset identification information and identification information of the mobile terminal, and after the voltage signal is compared with the identification information, the mobile terminal is controlled to be wirelessly connected with the display. Namely, the mobile terminal is connected with the WIFI screen projection module 40, so as to transmit the audio/video signal of the mobile terminal to the signal processing module 50 of the display for processing, and control the audio/video of the mobile terminal to be played on the display module 60. The problem of in the correlation technique through fixed interface and specific equipment connection, can't compromise the new interface type that designs for increasing user experience at present, have certain limitation to the use of external signal equipment to and can increase user's use cost through the method of external adapter, the operation of repeated plug can increase the risk that display mainboard interface damaged, various lines of external signal input device have simultaneously increased the loaded down with trivial details of display use operation. The technical scheme of the invention improves the convenience of the display.
In one embodiment, as shown in FIG. 1, the touch screen display further comprises a wired connection module 70;
the wired connection module 70 is connected to the signal processing module 50, and the wired connection module 70 is used for connecting a signal input device to transmit audio and video signals of the signal input device. It can be understood that the wired connection between the display and the terminal device can be realized through the wired connection module 70, and the wired connection module 70 can be an interface such as VGA, DVI, HDMI, etc. to realize connection with signal input devices such as a computer, DVD, X-BOX, etc., so that the application scene of the touch screen display can be wider.
In one embodiment, the touch screen display further comprises a signal channel switching key (not shown);
the signal channel switching key is disposed on the display main body 10 and interconnected with the signal processing module, and the signal channel switching key is configured to control switching between the WIFI screen projecting module 40 and the wired connection module 70. It can be understood that, for the display, the signal channel switching key may be disposed adjacent to the menu adjusting key of the display main body 10, and before we perform the wireless screen projection operation, the signal channel of the display may be switched from the wired connection module 70 to the WIFI screen projection module 40 to connect the mobile device by pressing the signal channel switching key, so as to prepare to receive the audio and video information transmitted by the mobile device. The scheme can improve the convenience of the display and is convenient for a user to select a connection mode.
In one embodiment, the touch screen display further comprises a horizontal and vertical screen switching key (not shown);
the horizontal and vertical screen switching key is arranged on the display main body 10 and electrically connected with the signal processing module 50, and is used for controlling the horizontal screen/vertical screen display state of the display module 60. It can be understood that the position of the horizontal and vertical screen switching key on the display main body 10 may be adjacent to the menu adjusting key on the display main body 10, or may be other positions on the display main body 10, and is not particularly limited; for audio and video signals projected onto a display by a mobile terminal, a horizontal screen display or a vertical screen display can be performed on a display module 60 of the display, when the mobile terminal projects a horizontal screen picture, the picture on the display module 60 can be switched into a required vertical screen full-screen display mode through a horizontal and vertical screen switching key, and when the mobile terminal projects a horizontal screen picture, the picture on the display module 60 can be switched back to the horizontal screen full-screen display mode through pressing the horizontal and vertical screen switching key. Therefore, the user can watch conveniently, and the use experience of the user is improved.
In one embodiment, as shown in fig. 1 and 4, the touch screen display further comprises a wireless charging module 80;
the wireless charging module 80 is disposed in the base 20, and the wireless charging module 80 is configured to output a direct current power to the mobile terminal to charge the mobile terminal.
In this embodiment, the wireless charging module 80 includes an AC-DC circuit 81, a frequency converter 82, and a power output coil 83;
the input end of the AC-DC circuit 81 is connected to a commercial power alternating current power supply, the output end of the AC-DC circuit 81 is connected to the input end of the frequency converter 82, and the output end of the frequency converter 82 is connected to the power output coil 83;
the AC-DC circuit 81 is configured to convert an input commercial AC power into a DC power, and output the DC power to the frequency converter 82;
the frequency converter 82 is configured to convert the dc power supply to output the converted ac power supply to the power output coil 83;
and the power output coil 83 is used for outputting the converted alternating current power supply to the mobile terminal.
It should be noted that wireless charging module 80 in this scheme sets up in base 20, and convenience of customers utilizes NFC label 30 and WIFI to throw screen module 40 and throw the picture of mobile terminal to the display and go up official working, see the video, when playing the recreation, utilizes wireless charging module 80 to charge for our mobile terminal simultaneously, can also continuously charge for mobile terminal when handling official working the amusement, has promoted the convenience of display.
It is understood that the wireless charging module 80 is based on maxwell's electromagnetic field theory, i.e., electromagnetic field generation, magnetic field generation, i.e., electric and magnetic fields are actually convertible under certain conditions. Wireless charging is achieved based on the theory that alternating current is converted into magnetic field output in a wireless charging base (transmitter), and then the mobile terminal (receiver) converts the magnetic field into alternating current power for conversion so as to be used by the mobile terminal. That is, the wireless charging module 80 and the mobile terminal are respectively provided with a built-in coil, when the two are close to each other, the transmitting coil of the wireless charging module 80 generates a certain current in the receiving coil of the mobile terminal through electromagnetic induction based on the alternating current with a certain frequency, so that the point energy is transferred from the transmitting end to the receiving end, and the wireless charging module 80 starts to supply power to the mobile terminal.
In the above embodiment, those skilled in the art should know that the touch screen display further includes a power supply, which can be implemented to supply power to the WIFI screen projection module 40, the signal processing module 50, the wireless charging module 80, and the like, so that the touch screen display can normally operate.
Based on the above embodiment, the scheme aims to expand the compatibility of the display, increase the flexibility of the use of the display, widen the application scene of the display, integrate the NFC tag 30, the WIFI screen projection module 40 and the wireless charging module 80 in the display, enable the display to be no longer a single display unit, and meanwhile have the function of charging mobile terminals such as mobile phones, and redefine the use mode of the display. The method is particularly important for users who seek interest and product experience. For example, a general game fan can be made to obtain the pleasure of a large screen game on a display; the white collar in the office can use the mobile phone to share the data with the colleagues and the clients in real time; common family users can share audio and video resources with family members through mobile phones.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the specification and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A touch screen display, the touch screen display comprising:
a display main body;
a base disposed on the display main body;
the NFC tag is attached to the surface of the base and used for outputting a voltage signal when the mobile terminal touches;
and the WIFI screen projection module is arranged in the base, is electrically connected with the NFC tag, and is used for receiving the voltage signal output by the NFC tag and controlling the voltage signal to be wirelessly connected with the mobile terminal so as to transmit the audio and video signal of the mobile terminal.
2. The touch screen display of claim 1, further comprising:
the signal processing module is arranged in the display main body, the input end of the signal processing module is connected with the output end of the WIFI screen projecting module, and the signal processing module is used for processing the audio and video signals transmitted by the WIFI screen projecting module;
and the display module is arranged in the display main body and used for receiving the audio and video signals processed by the signal processing module and displaying the audio and video of the mobile terminal.
3. The touch screen display of claim 2, further comprising a first resistor, a second resistor, a first capacitor, and a first inductor;
the input end of the NFC tag is in signal connection with the mobile terminal, the output end of the NFC tag is connected with the first end of the first resistor, the second end of the first resistor, the first end of the first capacitor and the first end of the first inductor are mutually connected, the second end of the first capacitor is grounded, the second end of the first inductor is connected with the first end of the second resistor and is connected with the input end of the WIFI screen projection module, and the second end of the second resistor is a power supply end.
4. The touch screen display of claim 3, wherein the NFC tag comprises an NFC antenna coil and an NFC tag chip;
the NFC antenna coil is an input end of the NFC tag, an output end of the NFC antenna coil is connected with an input end of the NFC tag chip, and an output end of the NFC tag chip is an output end of the NFC tag;
the NFC antenna coil is used for receiving the mobile terminal identification signal and outputting the mobile terminal identification signal to the NFC tag chip;
and the NFC tag chip is used for controlling an output voltage signal to the WIFI screen projection module when the identification signal received by the NFC antenna coil is consistent with a preset identification signal.
5. The touch screen display of claim 4, wherein the NFC tag chip comprises a storage module for storing predetermined identification information for comparison with identification information of the mobile terminal.
6. A touch screen desktop display as recited in claim 2, wherein the touch screen desktop display further comprises a wired connection module;
the wired connection module is connected with the signal processing module, and is used for connecting signal input equipment so as to transmit audio and video signals of the signal input equipment.
7. The touch screen display of claim 6, further comprising a signal path switch key;
the signal channel switching key is arranged on the display main body and is mutually connected with the signal processing module, and the signal channel switching key is used for controlling the switching of the WIFI screen projecting module and the wired connection module.
8. The touch screen display of claim 2, further comprising a landscape screen toggle button;
the transverse and vertical screen switching key is arranged on the display main body and electrically connected with the signal processing module, and is used for controlling the transverse screen/vertical screen display state of the display module.
9. The touch screen display of claim 1, further comprising a wireless charging module;
the wireless charging module is arranged in the base and used for outputting a direct current power supply to the mobile terminal so as to charge the mobile terminal.
10. The touch screen display of claim 9, wherein the wireless charging module comprises an AC-DC circuit, a frequency converter, and a power output coil;
the input end of the AC-DC circuit is connected with a commercial power alternating current power supply, the output end of the AC-DC circuit is connected with the input end of the frequency converter, and the output end of the frequency converter is mutually connected with the power output coil;
the AC-DC circuit is used for converting an input commercial power alternating current power supply into a direct current power supply and outputting the direct current power supply to the frequency converter;
the frequency converter is used for converting the direct-current power supply so as to output the converted alternating-current power supply to the electric power output coil;
and the power output coil is used for outputting the converted alternating current power supply to the mobile terminal.
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| CN202010654199.5A CN111669644A (en) | 2020-07-07 | 2020-07-07 | Touch screen display |
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| CN202010654199.5A CN111669644A (en) | 2020-07-07 | 2020-07-07 | Touch screen display |
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| CN112367543A (en) * | 2020-10-27 | 2021-02-12 | 海信视像科技股份有限公司 | Display device, mobile terminal, screen projection method and screen projection system |
| WO2022267946A1 (en) * | 2021-06-23 | 2022-12-29 | 广州视源电子科技股份有限公司 | Nfc-based screen transmission device connection method and apparatus, and computer device |
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