CN103414894A - Wireless real-time screen transfer equipment and method - Google Patents
- ️Wed Nov 27 2013
CN103414894A - Wireless real-time screen transfer equipment and method - Google Patents
Wireless real-time screen transfer equipment and method Download PDFInfo
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- CN103414894A CN103414894A CN2013103202354A CN201310320235A CN103414894A CN 103414894 A CN103414894 A CN 103414894A CN 2013103202354 A CN2013103202354 A CN 2013103202354A CN 201310320235 A CN201310320235 A CN 201310320235A CN 103414894 A CN103414894 A CN 103414894A Authority
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Abstract
The invention relates to wireless real-time screen transfer equipment which is characterized by comprising an emission module and a receiving end, wherein the emission module is installed in a user application terminal; the emission module comprises an emission end control module, an emission end background screen capture module and an emission end coding compression module; the emission module carries out capturing and transferring on data and sends the data to the receiving end through a wireless mode; the receiving end is connected to a large screen display terminal through a data line; the receiving end is used for receiving the data sent by the emission module and decoding and outputting the data. The invention further relates to a wireless real-time screen transfer method. According to the wireless real-time screen transfer equipment and method, through combination of the emission module and the receiving end, a previously traditional wired connection screen transfer technology is changed, real-time wireless screen transfer connection can be achieved, and convenience and rapidity of screen transfer are increased.
Description
Technical field
The present invention relates to pass the screen field, relate in particular to a kind of wireless real-time biography screen equipment and method.
Background technology
Pass screen: a plurality of screens are arranged, television screen, computer screen, mobile phone screen and pad screen etc. in general family.Content on a screen is shown on another screen and just is referred to as to pass screen.For example: computer screen is shown on the screen of television set, the mobile phone screen display on television screen etc.Pass screen and be further divided into wired biography screen and wireless biography screen.
Wired biography screen: by single line, computer or mobile phone are connected with television set in general, just can show the screen content of computer or mobile phone on TV, this becomes wired biography screen.
Wireless biography screen: wireless biography screen shields with respect to wired biography, utilizes exactly wireless network that the screen of mobile phone or computer is shown on television set.
Existing mobile intelligent terminal equipment (computer/apple/Android mobile phone or panel computer, the WINDOWS/IOS/ANDROID system is installed, hereinafter to be referred as transmitting terminal) to the audio frequency and video to large-screen of large-screen receiver/projecting apparatus, export two kinds of mode of operations are arranged, a kind of is that the Push Service of audio frequency and video is (non real-time, observe AirPlay or DLNA agreement), perhaps be called and throw screen, on market, existing equipment can only accomplish to throw screen.Another is real-time desktop mirroring service, or is called with screen, and miscellaneous equipment can't be accomplished in the market, therefore needs a kind of equipment that can accomplish to pass in real time screen of research and development.
Traditional technology all need to be by the special-purpose receiving device of former factory, and the equipment of each brand all can't be with other brand compatibility, in addition, also do not have in the market a universal equipment to come compatible WINDOWS/IOS or ANDROID equipment simultaneously, prevailing mode can only be to reach this purpose by wired mode, both exist apparent shortcoming, at first, due to the brand of many transmitting end equipments and the diversity of model, can't carry out adaptive various mobile terminals with unified receiving device; Secondly, if select the wired connection mode, due to transmitting end equipment peripheral interface disunity, cause the user need to prepare multiple physical connection cable, can in the flexibility to user's movement and use, cause some inconvenience.
As can be seen here, the technology and equipment of all existing existence all exists problems such as lacking compatibility, flexibility and convenience.
Summary of the invention
The drawbacks such as shortage compatibility, flexibility and convenience that exist for solving above-mentioned prior art and equipment, a kind of wireless real-time biography screen equipment is provided, this equipment can be realized the wireless biography screen of transmitting terminal and receiving terminal, and compatible plurality of devices, have good flexibility and convenience simultaneously.
Another object of the present invention is to provide a kind of wireless real-time biography screen method based on described wireless real-time biography screen equipment.
Concrete, the invention provides a kind of wireless real-time biography screen equipment, it is characterized in that: it comprises transmitter module and receiving terminal;
Described transmitter module is arranged in the user application terminal; Described user application terminal is the device connected with wireless network, such as being PC, can be also panel computer or the mobile phone of the panel computer of Android system or mobile phone, IOS system; Described transmitter module comprises that transmitting terminal control module, transmitting terminal backstage grab panel module and transmitting terminal compression coding module;
Described transmitter module captures transmission to data, and by wireless mode, data is sent to receiving terminal;
Described receiving terminal is connected in the large scale display terminal by data wire; Described large scale display terminal can be projecting apparatus or large screen television etc.; Receiving terminal is compatible different terminal equipment simultaneously; Described receiving terminal comprises receiving terminal decoder module, receiving terminal detection module, CPU processing module and picture output device;
The data that described receiving terminal transmits for receiving transmitter module, and data decode is exported.
Described transmitting terminal control module comprises reception server and background controller, be used to receiving described receiving terminal information for user selective reception end IP address, and sends corresponding control information to background controller according to the receiving terminal IP address that the user selects.
Described transmitting terminal backstage is grabbed panel module and is comprised command determination unit, linkage unit and data pick-up unit, realize the judgment device type and accept the order of described Background control computer, with described receiving terminal, connect afterwards, open screen capture, pick up frame data.
Described transmitting terminal compression coding module is carried out compression coding to the frame data that Zhua Ping unit, described transmitting terminal backstage obtains, and sets up and connect with receiving terminal, and the data after a compression coding are sent to receiving terminal.
Described receiving terminal decoder module realization is connected with described transmitting terminal compression coding module, and decodes after obtaining data; Described receiving terminal detection module requires or throws screen require automatically to detect and require to automatically switch according to difference to the same screen of described transmitter module; Described CPU processing module presets resolution threshold, is responsible for the resolution of coded format is detected; If data resolution reaches predefined resolution threshold, send data to picture output device and export; If data resolution does not reach predefined resolution threshold, the CPU processing module is carried out code optimization to data, after the elimination sawtooth, sends data to picture output device again and exports.
Described receiving terminal also comprises a judge module, and described judge module can carry out the judgement whether wireless network open and according to judged result, the client be proposed to prompting; Described judge module can also judge the information of transmitter module and the IP address of receiving terminal is fed back to transmitter module.
Preferably, the monitoring means of described receiving terminal can be realized automatically launch terminal being required with screen or throwing the monitoring that screen requires by wireless network, can realize that throwing screen between launch terminal equipment and receiving terminal apparatus is connected or with the seamless switching of screen connection.
Preferably, described CPU processing module is provided with a connect chip; Described connect chip is an analog-digital chip SGM3157, realizes the conversion of digital signal to analog signal, and described connect chip is exported HDMI digital signal or VGA analog signal or two paths of signals according to the type selecting of receiving terminal equipment and exported simultaneously.
Preferably, described receiving terminal is provided with HDMI interface, VGA interface and AV interface; Described receiving terminal is compatible AirPlay agreement, DLNA agreement and PC end simultaneously.
Preferably, described wireless real-time biography screen equipment, not only can throw screen, and can be with screen.
Preferably, described wireless real-time biography screen equipment, can also send to receiving terminal by audio frequency separately by transmitting terminal, and the AV interface by receiving terminal outputs to the equipment connected.
A kind of wireless real-time biography screen method according to described wireless real-time biography screen equipment, it is characterized in that: it comprises the following steps:
S1: whether the judge module of described receiving terminal is opened and is judged wireless network, closes if confirmed wireless network, can open wireless network by reminding user; As confirm the wireless network unlatching, show the IP address of this receiving terminal and open described monitoring service device;
S2: the monitoring service device of described transmitting terminal control module and described receiving terminal judge module is set up and is contacted, and the receiving terminal information that receives described monitoring service device feedback supplies user selective reception end IP address, and send corresponding control information to background controller according to the receiving terminal IP address that the user selects, carry out far call;
S3: described transmitting terminal backstage is grabbed panel module the device type of selecting is judged, and accept the order of described background controller, and judge whether to pass screen and connect, with described receiving terminal, connect after receiving information, open the screen capture thread, pick up frame data;
S4: described transmitting terminal compression coding module is carried out compression coding to the frame data that Zhua Ping unit, described transmitting terminal backstage obtains, and sets up and connect with receiving terminal, and the data after compression coding are sent to receiving terminal; Described monitoring means requires with screen launch terminal or throws screen to require to monitor by wireless network automatically;
S5: described receiving terminal decoder module is connected with described transmitting terminal compression coding module, and decodes after obtaining data; The connect chip of described CPU processing module requires or throws screen to require to judge and determine output HDMI digital signal or VGA analog signal according to the same screen of launch terminal; Described CPU processing module detects the resolution of coded format; If data resolution reaches predefined resolution threshold, decoded data is sent to picture output device and exports; If data resolution does not reach predefined resolution threshold, the CPU processing module is carried out code optimization to data, after the elimination sawtooth, again data decode is sent to picture output device and exports.
The wireless network of mentioning in the present invention all refers to the WiF standard network.
Described receiving terminal is as follows to the concrete output procedure of the data that receive:
At first by equipment connections such as receiving terminal and displays, the CPU processing module is sent to the HDMI interface by the digital signal of reception, then by the HDMI interface, directly be transferred to the equipment such as display, then this display apparatus is presented at the digital signal of reception on screen, and can hear corresponding sound, the CPU processing module is sent to connect chip by the digital signal of reception simultaneously, convert digital signal to analog signal, and analog signal is sent to the VGA interface, by the VGA interface, analog signal is sent to again to the equipment such as projecting apparatus, projecting apparatus shows analog signal on screen, final this wireless real-time biography screen equipment reaches the purpose of two-path video signal output, an i.e. road HDMI signal output and a road VGA signal output, , described receiving terminal can also wireless biography shield doc, the files such as pdf, and not only support IOS and Android system, also support the windows system, namely can support the wireless real-time biography screen of pc machine or notebook.
In order to projecting apparatus etc., to have the equipment output sound of AV interface, receiving terminal also comprises the AV interface, at first by equipment connections such as wireless real-time biography screen equipment and projecting apparatus, the CPU processing module sends to connect chip by the digital signal of reception, convert digital signal to analog signal, and analog signal is sent to VGA interface and AV interface, by the AV interface, simulated audio signal is sent to again to the equipment such as projecting apparatus, projecting apparatus shows the picture of analog signal on screen, and can sound, final this wireless real-time biography screen equipment reaches the purpose of the equipment output sound of the AV interface such as projecting apparatus, thereby better complete smart mobile phone and (have Android, the IOS system) and the wireless real-time biography of the equipment of windows system and projecting apparatus screen.
Receiving terminal also comprises at least one USB interface; USB interface by mouse with can control more easily the CPU processing module after USB interface is connected.
Receiving terminal also includes a hotspot analogue unit, in the situation that there is no wireless network, can use as the hotspot simulator, is used for simulating a wireless network for native system.
Beneficial effect of the present invention mainly contains following several respects:
(1) the present invention is by the perfect adaptation of transmitter module and receiving terminal, and wired connection traditional before having changed, with the screen technology, can realize that real-time radio passes screen and connects, and has increased the convenience and the rapidity that pass screen.
(2) compatible AirPlay agreement, DLNA agreement and PC hold described receiving terminal simultaneously; Increased the compatibility of equipment, can realize passing the screen docking for different transmitting terminals, without transforming receiving terminal, used convenient.
(3) utilize as much as possible the redundant configuration of user application terminal, increased the utilance of equipment and recreational.Receiving terminal adopts the ARM chip, and the cost low-power consumption is low, and long service life, is conducive to save capital protection of the environment.
(4) receiving terminal is undertaken connecting with screen by wireless biography screen except connecting the equipment such as large-scale tv machine, in addition, described receiving terminal also can be connected on the equipment such as projecting apparatus to be thrown screen and connects, meet the different user requirement, monitoring service device in the receiving terminal judge module can to transmitter module same screen and throw two kinds of demands of screen and realize automatic monitoring, without manual intervention, can realize with screen and throw the mutual switching of shielding two kinds of technology.
(5) do not having under the environment of wireless network, described receiving device can be modeled to a portable focus, makes transmitter module by connecting the hotspot of receiving terminal, so realize above-mentioned function.
The accompanying drawing explanation
Fig. 1 is transmitter module and the receiving terminal structured flowchart of wireless real-time transmission equipment of the present invention;
Fig. 2 is the receiving terminal structured flowchart of wireless real-time transmission equipment of the present invention;
Fig. 3 is workflow Fig. 1 of wireless real-time transmission method of the present invention;
Fig. 4 is workflow Fig. 2 of wireless real-time transmission method of the present invention;
Fig. 5 is workflow Fig. 3 of wireless real-time transmission method of the present invention;
Fig. 6 is CPU processing module structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further explained, wireless real-time biography screen equipment as depicted in figs. 1 and 2, it comprises transmitter module 1 and receiving
terminal2;
Transmitter module 1 is arranged in the user application terminal, and the user application terminal is the device connected with wireless network, such as being PC, can be also panel computer or the mobile phone of the panel computer of Android system or mobile phone, IOS system;
Transmitter module 1 comprises that transmitting
terminal control module10, transmitting terminal backstage
grab panel module11 and transmitting terminal
compression coding module12;
1 pair of data of transmitter module capture transmission, and by wireless mode, data are sent to receiving
terminal2;
Transmitting
terminal control module10 comprises
reception server101 and
background controller102, for the information that the receives receiving
terminal2 IP address for user's
selective reception end2, and the IP address of the
receiving terminal2 of selecting according to the user sends corresponding control information to
background controller102.
The transmitting terminal backstage is grabbed
panel module11 and is comprised
command determination unit111,
linkage unit112 and data pick-
up unit113, realize the judgment device type and accept the order of described Background control computer, with described receiving terminal, connect afterwards, open screen capture, pick up frame data.
The frame data that Zhua Ping unit, 12 pairs of described transmitting terminal backstages of transmitting terminal
compression coding module11 obtains carry out compression coding, and set up and connect with receiving terminal, and the data after compression coding are sent to receiving
terminal2.
Receiving
terminal2 is connected on the large scale display terminal by data wire, and the large scale display terminal can be large screen television or projecting apparatus etc., the large scale display terminal that receiving
terminal2 can be compatible different.
Receiving
terminal2 comprises receiving
terminal decoder module21, receiving
terminal detection module22,
CPU processing module23 and
picture output device24;
The data that receiving
terminal2 transmits be used to receiving transmitter module 1, and data decode is exported.
21 realizations of receiving terminal decoder module are connected with transmitting terminal
compression coding module12, and decode after obtaining data; Receiving
terminal detection module22 can be realized automatically launch terminal being required with screen or throwing the monitoring that screen requires by wireless network, can realize that throwing screen between launch terminal equipment and receiving terminal apparatus is connected or with the seamless switching of screen connection;
CPU processing module23 presets resolution threshold, is responsible for the resolution of coded format is detected; If data resolution reaches predefined resolution threshold, the rear data of decoding are sent to
picture output device24 and export; If data resolution does not reach predefined resolution threshold,
CPU processing module23 can be carried out code optimization to data, by after data decode, being sent to picture
output device24, exports after the elimination sawtooth again.
Receiving terminal 2 also comprises a
judge module20, and
judge module20 can carry out the judgement whether wireless network open and according to judged result, the client be proposed to prompting;
Judge module20 can also judge the information of transmitter module 1 and the IP address of receiving
terminal2 is fed back to transmitter module.
23 is provided with a
connect chip230; The same screen that connect chip is selected according to receiving
terminal2 requires or throws screen to require to select output HDMI digital signal or VGA analog signal.
Connect chip is an analog-digital chip SGM3157, digital signal can be converted to analog signal, thereby realize selecting the different data way of outputs according to the difference of receiving device, or HDMI digital signal and VGA analog signal two paths of signals can be exported simultaneously.
Receiving
terminal2 is compatible AirPlay agreement, DLNA agreement and PC end simultaneously.
A kind of wireless real-time biography screen method according to described wireless real-time biography screen equipment, it is characterized in that: it comprises the following steps:
S1: whether 20 pairs of wireless networks of the judge module of receiving
terminal2 are opened and are judged, close if confirmed wireless network, can open wireless network by reminding user; As confirm the wireless network unlatching, show the IP ip address of this receiving terminal and open described monitoring service device;
S2: transmitting
terminal control module10 is set up and is contacted with the monitoring service device 201 of receiving
terminal judge module20, and the information that receives the receiving
terminal2 of monitoring service device 201 feedbacks supplies user selective reception end IP address, and send corresponding control information to background controller according to the receiving terminal IP address that the user selects, carry out far call;
S3: the device type that 11 pairs of selections of panel module are grabbed on the transmitting terminal backstage judges, and accepts the order of
background controller102, judges whether to carry out to connect with screen, with receiving
terminal2, connects after receiving, and opens the screen capture thread, picks up frame data;
S4: the frame data that Zhua Ping unit, 12 pairs of transmitting terminal backstages of transmitting terminal
compression coding module11 obtains carry out compression coding, and set up and connect with receiving terminal, and the data after compression coding are sent to receiving terminal;
S5: receiving
terminal decoder module21 is connected with transmitting terminal
compression coding module12, and decodes after obtaining data; The connect chip of
CPU processing module23 requires or throws screen to require to judge and determine output HDMI digital signal or VGA analog signal according to the same screen of launch terminal; The resolution of 23 pairs of coded formats of CPU processing module detects; If data resolution reaches predefined resolution threshold, the rear data of decoding are sent to picture
output device24 and export; If data resolution does not reach predefined resolution threshold, 23 pairs of data of CPU processing module are carried out code optimization, after the elimination sawtooth, send data to picture output device again and export.
Below in conjunction with Fig. 3 to Fig. 5, the throwing screen technology that the present invention receives is further explained, the first step, receiver module 1 sends broadcast, addressing is carried out in receiving terminal IP address in local area network, in case after finding and being fed back, receiving terminal 2_IP address table will show on the user application terminal, for the user, select, after the user has selected some receiving terminal IP address, user application terminal and receiving
terminal2 have just been set up man-to-man conversation mechanism, until transmitter module 1 provides the information stopped.Simultaneously, transmitter module 1 also can send to the screen resolution
data receiving terminal2, and receiving
terminal2 can not have standby resolution to make automatic adaptation according to output, has so just set up dialogue mechanism;
Second step, in case set up conversation mechanism, receiver module 1 can pick up frame data, and data are encoded and compressed with the form of jpeg, then by the jpeg data with H, 264 video flowing coded system is sent to receiving
terminal2 with the tcp data bag;
The 3rd step, after receiving
terminal2 is received the tcp data bag, discharge compressed package by decoding with picture format.Simultaneously packet is detected, process and optimize picture sawtooth and sharpening with
CPU processing module23, then with stream media format, play.
The present invention comprises backstage and grabs screen technology, real-time video coding techniques, Streaming Media biography screen technology, AIRPLAY/DLNA service background real time monitoring.
The screen technology is grabbed on backstage, and transmitting terminal iPhone/iPad screen S creencapture4 backstage captures, WINDDOWS screen/ANDROID mobile phone/flat screens framebuffer5 captures, any convergent-divergent of screen buffer buffer; No matter transmitting terminal is WINDOWS, IOS or ANDROID system, by unified receiving
terminal2, all can realize the function of wireless biography screen;
The real-time video coding techniques, transmitting terminal carries out the Real Time Compression coding to the screen content captured, and transmitter module can be optimized to reduce transmission data and time to multi-core CPU simultaneously;
Streaming Media passes the screen technology, after 1 pair of receiving
terminal2 addressing of transmitter module, coupling, the video flowing through compressed encoding is pushed to receiving
terminal2 by wireless mode, and receiving
terminal2 can carry out real-time decoding to Streaming Media.When the transmitting terminal coding efficiency is weak, original resolution hour, when playing, receiving terminal carries out reverse sawtooth picture frame processing (eliminate sawtooth, beautify picture), in the Streaming Media mode, with mirror image, show on the display device that receiving terminal connects, time delay is no more than 500 milliseconds.
AIRPLAY/DLNA backstage Real-Time Monitoring, during the system operation, transmitter module 1 can send the UDP message packet broadcast that comprises source IP address, receiving
terminal2 receive after the packet of transmitter module 1 can do the IP matching addresses with associated after, the screenshotss content of transmitter module 1 just can be to be sent to receiving
terminal2 in accordance with the AIRPLAY/DLNA agreement and with stream media format.
Receiving
terminal2 is undertaken connecting with screen by wireless biography screen except connecting the equipment such as large-scale tv machine, in addition, receiving
terminal2 also can be connected on the equipment such as projecting apparatus to be thrown screen and connects, meet the different user requirement, monitoring service device 201 in the
judge module20 of receiving terminal 2 can to transmitter module 1 same screen and throw two kinds of demands of screen and realize automatic monitoring, without manual intervention, can realize with screen and throw the mutual switching of shielding two kinds of technology.
As shown in Figure 6, the step of receiving terminal 2 output data is as follows:
At first by equipment connections such as receiving terminal and displays,
CPU processing module23 is sent to HDMI interface 231 by the digital signal of reception, then by
HDMI interface231, directly be transferred to the equipment such as display, then this display apparatus is presented at the digital signal of reception on screen, and can hear corresponding sound,
CPU processing module23 is sent to connect
chip230 by the digital signal of reception simultaneously, convert digital signal to analog signal, and analog signal is sent to
VGA interface232, by
VGA interface232, analog signal is sent to again to the equipment such as projecting apparatus, projecting apparatus shows analog signal on screen,
final receiving terminal2 completes the purpose of two-path video signal output, an i.e. road HDMI output and road VGA output, meet smart mobile phone and (have Android, the IOS system) and the equipment of windows system and projecting apparatus and possess the wireless real-time biography screen of the display device of HDMI interface, this receiving terminal and transmitter module can also wireless biography shield doc, the files such as pdf, and not only support IOS and Android system, also support the windows system, namely can support the wireless real-time biography screen of pc or notebook.
In order to projecting apparatus etc., to have the equipment output sound of VGA interface, receiving
terminal2 also comprises
AV interface233; At first by equipment connections such as receiving
terminal2 and projecting apparatus,
CPU processing module23 sends to connect
chip230 by the digital signal of reception, convert digital signal to analog signal, and analog signal is sent to
VGA interface232 and
AV interface233, by
VGA interface232 and
AV interface233, analog signal is sent to the equipment such as projecting apparatus again, projecting apparatus shows the picture of analog signal, and can sound on screen.
Receiving terminal 2 also comprises at least one USB interface; USB interface by mouse with can control more easily the CPU processing module after USB interface is connected.
Receiving
terminal2 includes housing, is provided with panel on described housing, on described panel, is provided with AIRPLAY logo and DLNAlogo.
Receiving terminal 2 also includes a hotspot analogue unit, in the situation that there is no wireless network, can use as the hotspot simulator, is used for simulating a wireless network for native system.
Embodiment mono-
Transmitter module 1 is installed among the ipad terminal, operation film program on ipad, and receiving
terminal2 is connected on TV,
The first step, transmitter module 1 sends broadcast, addressing is carried out in the IP address of the receiving
terminal2 in local area network, after searching out the IP address of receiving
terminal2 and being fed back, the AIRPLAY logo of transmitting terminal will highlightedly demonstrate the name list of receiving
terminal2, for the user, selects, after the user has selected some receiving terminals, user application terminal and receiving
terminal2 are just set up, and have played man-to-man conversation mechanism; Transmitter module 1 sends to receiving
terminal2 requirement connected with screen by broadcast, and receiving terminal switches automatically according to the throwing screen connection request of transmitter module 1, is switched to the screen pattern of throwing.
Second step, after setting up conversation mechanism, transmitter module 1 carries out compression coding according to the AirPLAY agreement to frame data by the data of video file, is sent to receiving
terminal2;
The 3rd step, after receiving
terminal2 is received packet, be reduced into video file by decoding by compressed package according to the AirPLAY agreement and discharge, and then video file is play on TV format with stream media format.
Embodiment bis-
Transmitting terminal 1 is installed among computer terminal, and receiving
terminal2 is connected on TV, in computer terminal operation PDF program,
The first step, transmitter module 1 sends broadcast, the I P address of the receiving
terminal2 in local area network carries out addressing, after searching out the IP address of receiving
terminal2 and being fed back, the DLNAlogo of transmitting terminal will highlightedly demonstrate the name list of receiving
terminal2, for the user, select, after the user had selected some receiving terminals, user application terminal and receiving
terminal2 had just been set up man-to-man conversation mechanism; Transmitter module 1 sends and throws the requirement that screen connects to receiving
terminal2 by broadcast, and receiving terminal switches automatically according to the same screen connection request of transmitter module 1, is switched to same screen pattern;
Second step, after setting up conversation mechanism, transmitting terminal 1 can capture the frame data of launch terminal, and data are encoded and compressed with the form of jpeg, then the jpeg data is sent to receiving
terminal2 with the video flowing coded system of DLNA with the tcp data bag;
The 3rd step, after receiving
terminal2 is received packet, be reduced into video stream file by decoding by compressed package according to the DLNA agreement and discharge, and then with stream media format, with screen, plays on television set.
Embodiment tri-
Transmitting terminal 1 is installed among the Android terminal, and receiving
terminal2 is connected on large projector, in computer terminal operation film program,
The first step, transmitter module 1 sends broadcast, addressing is carried out in the IP address of the receiving
terminal2 in local area network, after searching out the IP address of receiving
terminal2 and being fed back, the DLNAlogo of transmitting terminal will highlightedly demonstrate the name list of receiving
terminal2, for the user, select, after the user had selected some receiving terminals, user application terminal and receiving
terminal2 had just been set up man-to-man conversation mechanism; Transmitter module 1 sends and throws the requirement that screen connects to receiving
terminal2 by broadcast, and receiving terminal switches automatically according to the throwing screen connection request of transmitter module 1, is switched to the screen pattern of throwing;
Second step, after setting up conversation mechanism, transmitter module 1 carries out compression coding according to the DLNA agreement to frame data by the data of video file, is sent to receiving
terminal2;
The 3rd step, after receiving
terminal2 is received packet, be reduced into video file by decoding by compressed package and discharge, and then video is play on projecting apparatus with stream media format.
The wireless network be connected between user application terminal and large scale display terminal in the present invention is the WiFi standard network.
(1) the present invention is by the combination of transmitter module and receiving terminal, and wired connection traditional before having changed, with the screen technology, can realize that real-time radio passes screen and connects, and has increased the convenience and the rapidity that pass screen.
(2) compatible AirPlay agreement, DLNA agreement and PC hold described receiving terminal simultaneously; Increased the compatibility of equipment, can both realize passing the screen docking for different transmitting terminals, without transforming receiving terminal, used convenient.
(3) receiving terminal is realized shielding connection request or throwing the automatic switchover of shielding connection request transmitter module is same, and according to shielding connection request or throwing screen connection request selection output HDMI digital signal or VGA analog signal or two paths of signals, exporting simultaneously.
(4) receiving terminal adopts the ARM chip, and the cost low-power consumption is low, and long service life, is conducive to save capital protection of the environment.
(5) do not having under the environment of wireless network, described receiving device can be modeled to a portable focus, makes transmitter module by connecting the hotspot of receiving terminal, so realize above-mentioned function.
The person of ordinary skill in the field is to be understood that: in the situation that do not break away from basic principle of the present invention; can carry out various modifications, retouching, combination to the present invention, supplement or the replacement of technical characterictic, these are equal to substitute mode or within obviously mode of texturing all falls into protection scope of the present invention.
Claims (10)
1. wireless real-time biography screen equipment, it is characterized in that: it comprises transmitter module and receiving terminal;
Described transmitter module is arranged in the user application terminal; Described transmitter module comprises that transmitting terminal control module, transmitting terminal backstage grab panel module and transmitting terminal compression coding module; Described transmitter module captures transmission to data, and by wireless mode, data is sent to receiving terminal;
Described receiving terminal is connected in the large scale display terminal by data wire; Described receiving terminal comprises receiving terminal decoder module, receiving terminal detection module, CPU processing module and picture output device; The data that described receiving terminal transmits for receiving transmitter module, and data decode is exported; Described picture output device contains an ARM master chip.
2. wireless real-time biography screen equipment according to claim 1, it is characterized in that: described transmitting terminal control module comprises reception server and background controller, for receiving the described receiving terminal information IP address for user's selective reception end, and the IP address of the receiving terminal of selecting according to the user sends corresponding control information to background controller.
3. wireless real-time biography screen equipment according to claim 1, it is characterized in that: described transmitting terminal backstage is grabbed panel module and is comprised command determination unit, linkage unit and data pick-up unit, realize the judgment device type and accept the order of described background controller, with described receiving terminal, connect afterwards, open screen capture, pick up frame data.
4. wireless real-time biography screen equipment according to claim 1, it is characterized in that: described transmitting terminal compression coding module is carried out compression coding to the frame data that Zhua Ping unit, described transmitting terminal backstage obtains, and set up and connect with receiving terminal, the data after compression coding are sent to receiving terminal.
5. wireless real-time biography screen equipment according to claim 1 is characterized in that: described receiving terminal decoder module is realized and being connected of described transmitting terminal compression coding module, and is decoded after obtaining data; Described receiving terminal detection module requires or throws screen require automatically to detect and require to automatically switch according to difference to the same screen of described transmitter module; Described CPU processing module presets resolution threshold, is responsible for the resolution of coded format is detected; If data resolution reaches predefined resolution threshold, send data to picture output device and export; If data resolution does not reach predefined resolution threshold, the CPU processing module is carried out code optimization to data, after the elimination sawtooth, sends data to picture output device again and exports.
6. wireless real-time biography screen equipment according to claim 1 or 5, it is characterized in that: described receiving terminal also comprises a judge module, described judge module can carry out the judgement whether wireless network open and according to judged result, the client be proposed to prompting; Described judge module also comprises a monitoring service device, and the information of described transmitter module is judged and the IP address of receiving terminal is fed back to transmitter module.
7. wireless real-time biography screen equipment according to claim 1 or 5, it is characterized in that: the monitoring means of described receiving terminal can be realized automatically launch terminal being required with screen or throwing the monitoring that screen requires by wireless network, can realize that throwing screen between launch terminal equipment and receiving terminal apparatus is connected or with the seamless switching of screen connection.
8. according to the described wireless real-time biography screen equipment of the arbitrary claim of claim 1-4, it is characterized in that: described CPU processing module is provided with a connect chip; Described connect chip selects output HDMI digital signal or VGA analog signal or two paths of signals to export simultaneously according to the device type of receiving terminal.
9. wireless real-time biography screen equipment according to claim 1 or 5, it is characterized in that: described receiving terminal is provided with HDMI interface, VGA interface and AV interface; Described receiving terminal is compatible AirPlay agreement, DLNA agreement and PC end agreement simultaneously.
10. the wireless real-time biography screen method of a wireless real-time biography screen equipment according to claim 1, it is characterized in that: it comprises the following steps:
S1: whether the judge module of described receiving terminal is opened and is judged wireless network, closes if confirmed wireless network, can open wireless network by reminding user; As confirm the wireless network unlatching, show the IP address of this receiving terminal and open described monitoring service device;
S2: the monitoring service device of described transmitting terminal control module and described receiving terminal judge module is set up and is contacted, and the receiving terminal information that receives described monitoring service device feedback supplies user selective reception end IP address, and send corresponding control information to background controller according to the receiving terminal IP address that the user selects, carry out far call;
S3: described transmitting terminal backstage is grabbed panel module the device type of selecting is judged, and accept the order of described background controller, and judge whether to pass screen and connect, with described receiving terminal, connect after receiving information, open the screen capture thread, pick up frame data;
S4: described transmitting terminal compression coding module is carried out compression coding to the frame data that Zhua Ping unit, described transmitting terminal backstage obtains, and sets up and connect with receiving terminal, and the data after compression coding are sent to receiving terminal; Described monitoring means requires with screen launch terminal or throws screen to require to monitor by wireless network automatically;
S5: described receiving terminal decoder module is connected with described transmitting terminal compression coding module, and decodes after obtaining data; The connect chip of described CPU processing module requires or throws screen to require to judge and determine output HDMI digital signal or VGA analog signal according to the same screen of launch terminal; Described CPU processing module detects the resolution of coded format; If data resolution reaches predefined resolution threshold, decoded data is sent to picture output device and exports; If data resolution does not reach predefined resolution threshold, the CPU processing module is carried out code optimization to data, after the elimination sawtooth, again data decode is sent to picture output device and exports.
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| CN2013103202354A CN103414894A (en) | 2013-07-29 | 2013-07-29 | Wireless real-time screen transfer equipment and method |
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Application publication date: 20131127 |