CN105491361A - Wireless synchronous multimedia projector - Google Patents
Wireless synchronous multimedia projector Download PDFInfo
- Publication number
- CN105491361A CN105491361A CN201610022416.2A CN201610022416A CN105491361A CN 105491361 A CN105491361 A CN 105491361A CN 201610022416 A CN201610022416 A CN 201610022416A CN 105491361 A CN105491361 A CN 105491361A
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- unit
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- wifi
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
- H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
Abstract
The invention discloses a wireless synchronous multimedia projector which comprises a master control module, a same-screen module, a WIFI module, a loudspeaker, an LED display screen, a power amplifier, a power supply module, a state indicating lamp, a combined press button and an antenna. The master control module is connected with the same-screen module, the WIFI module, the power amplifier, the state indicating lamp and the combined press button. The WIFI module is connected with the antenna and the same-screen module. The power amplifier is connected with the LED display screen and the loudspeaker. The power supply module is connected with the master control module, the loudspeaker and the LED display screen. According to the wireless synchronous multimedia projector, wireless synchronization technology is utilized, thereby preventing troubles in wired connection and ensuring no leakage of original data. The WIFI module can establish a WIFI network in an AP operation mode, and can be wirelessly connected with an intelligent terminal anytime and anywhere. Furthermore the WIFI module can operate in a station (STA) mode and accesses Internet. A full high definition (FHD) 1920*1080 resolution is used, thereby realizing full high definition display. The definition is higher than that of an existing projector by 3-6 times.
Description
Technical field
The present invention relates to projector's technical field, particularly relate to a kind of wireless synchronization multimedia projector.
Background technology
Projector's major technique has CRT(CathodeRayTube: cathode ray tube), LCD(LiquidCrystalDisplay: liquid crystal display), DLP(DigitalLightProcessor: digital light path processor).CRT and LCD projector adopts transmission-type mode of delivery, and DLP projector adopts reflective mode of delivery.CRT projector and LCD projector technology maturation, Applicative time is longer, stable performance, and the DLP projector applications time is shorter, technology awaits perfect further, but this projector adopts micromirror reflects shadow casting technique, and brightness and contrast significantly improves, volume and weight obviously reduces, and has stronger vitality and market potential remote.
But, no matter be the projector adopting CRT, LCD or DLP technology, all there is some deficiency following: the contact 1, between equipment all needs to be connected through a wired connection.Such as, the HDMI high definition line between projector and computer or VGA data wire, and the power line etc. of projector and computer; When we will use projector, need desktop computer or notebook computer to be connected with projector, relative to wireless connections, these " wired " are exactly " unnecessary ".Obviously, wired lower than wireless operating efficiency.2, confidentiality is bad.Existing projector, to Projection Display, needs the firsthand information of film source or display, and these data are normally sent to by Email in the computer that is connected with projector or use USB flash disk to copy.But regardless of which kind of situation above-mentioned, the possibility that firsthand information has divulging a secret or loses, therefore, the confidentiality of the firsthand information required for projection is bad.3, definition is not high.The resolution of current projector has VGA640*480, SVGA800*600, XGA1024*768, SXGA1280*1024, and above-mentioned resolution cannot reach full HD display.
Summary of the invention
For the deficiencies in the prior art, the invention of this reality proposes a kind of wireless synchronization multimedia projector, and this projector adopts wireless synchronization technology to avoid the trouble of wired connection, and ensures that firsthand information does not leak; This projector adopts FHD1920*1080 resolution, realizes full HD display.
To achieve these goals, technical solution of the present invention is as follows:
A kind of wireless synchronization multimedia projector, comprises main control module, same to panel module, WIFI module, loud speaker, LED display, power amplifier, power module, condition prompting lamp, combination button, antenna.Main control module is for the reception to information, computing and process; With panel module for receiving radio multimedium stream; WIFI module is for realizing the wireless connections of projector and intelligent terminal; Loud speaker is used for output audio stream; LED display is used for display of video streams; Power amplifier is used for amplifying video flowing and audio stream; Power module is for providing the voltage needed for work for described projector; Condition prompting lamp is for pointing out the operating state of described projector; Combination button is used for realizing described projector external key and controls; Antenna is used as the port of described projector and intelligent terminal radio communication.
Main control module is connected with same panel module, WIFI module, power amplifier, condition prompting lamp, combination button respectively; WIFI module is respectively with antenna, be connected with panel module; Power amplifier is connected with LED display, loud speaker respectively; Power module is connected with main control module, loud speaker, LED display respectively.Prime filter, signal amplification unit, serial communication unit, demodulator, rear class filter is comprised with panel module.Prime filter, signal amplification unit, serial communication unit, demodulator, rear class filter connect in turn.
Further, WIFI module has two kinds of mode of operations: ap mode, STA mode .WIFI module work are when ap mode, and described projector is as the wireless connections of WIFI hot spot and intelligent terminal and intelligent terminal; When WIFI module is operated in ap mode, described projector is as STA website access network.
Further, double frequency 802.11a/b/g/n wireless network transmissions is adopted with panel module.
Further, antenna adopts double antenna design.
Further, LED display adopts FHD1920*1080 resolution.
Further, power module comprises EMI filter unit, rectification unit, filter unit, switch control unit, voltage transformation unit, output filtering unit.EMI filter unit, rectification unit, filter unit, switch control unit, voltage transformation unit, output filtering unit are linked in sequence successively.
Beneficial effect of the present invention:
(1) the present invention adopts wireless synchronization technology to avoid the trouble of wired connection, and ensures that firsthand information does not leak; (2) WIFI module of the present invention can set up wireless WIFI network under AP mode of operation, can carry out wireless connections whenever and wherever possible with intelligent terminal; And WIFI module enters the Internet under can being operated in STA mode; (3) the present invention adopts FHD1920*1080 resolution, realizes full HD display.
Accompanying drawing explanation
Fig. 1 is the block diagram of wireless synchronization multimedia projector.
Fig. 2 is the block diagram with panel module 2 in wireless synchronization multimedia projector.
Fig. 3 is the block diagram of power module 7 in wireless synchronization multimedia projector.
Wherein, the Reference numeral in Fig. 1 ~ Fig. 3 is: main control module 1, with panel module 2, WIFI module 3, loud speaker 4, LED display 5, power amplifier 6, power module 7, condition prompting lamp 8, combination button 9, antenna 10, prime filter 201, signal amplification unit 202, serial communication unit 203, demodulator 204, rear class filter 205, EMI filter unit 701, rectification unit 702, filter unit 703, switch control unit 704, voltage transformation unit 705, output filtering unit 706.
Embodiment
Fig. 1 is the block diagram of this wireless synchronization multimedia projector.Wherein, main control module 1 is comprised, with panel module 2, WIFI module 3, loud speaker 4, LED display 5, power amplifier 6, power module 7, condition prompting lamp 8, combination button 9, antenna 10.
Main control module 1 is connected with same panel module 2, WIFI module 3, power amplifier 6, condition prompting lamp 8, combination button 9 respectively; WIFI module 3 is respectively with antenna 10, be connected with panel module 2; Be connected with WIFI module 3 with panel module 2; Power amplifier 6 is connected with LED display 5, loud speaker 4 respectively; Power module 7 is connected with main control module 1, loud speaker 4, LED display 5 respectively.
Main control module 1 is for the reception to information, computing and process; With panel module 2 for receiving radio multimedium stream; WIFI module 3 is for realizing the wireless connections of multimedia projector and intelligent terminal; Loud speaker 4 is for output audio stream; LED display 5 is for display of video streams; Power amplifier 6 is for amplifying video flowing and audio stream; Power module 7 is for providing the voltage needed for work for this projector; Condition prompting lamp 8 is for pointing out the operating state of this projector; Combination button 9 controls for realizing projector's external key; Antenna 10 is used as the port of described projector and intelligent terminal radio communication.
The mode of operation of WIFI module 3 has two kinds: ap mode and STA mode.When WIFI module 3 is operated in ap mode, projector, as the founder of wireless network, as wireless router, as a WIFI hot spot, can allow other intelligent terminal wireless access with it.When WIFI module 3 is operated in STA mode, projector, as a STA website, can connect the wireless routing of surrounding, access Internet.
Fig. 2 is the block diagram with panel module 2 in wireless synchronization multimedia projector.Prime filter 201, signal amplification unit 202, serial communication unit 203, demodulator 204, rear class filter 205 is comprised with panel module 2.Wherein, prime filter 201, signal amplification unit 202, serial communication unit 203, demodulator 204, rear class filter 205 connect in turn.
Prime filter 201 carries out filtering for the signal that will receive; Signal amplification unit 202 is for amplifying filtered for prime filter 201 signal; Serial communication circuit is used for the signal after to signal amplification unit 202 amplification and carries out synchronous transmission; Demodulator 204 is digital signal for the signal receiving transmitted by serial communication circuit; Rear class filter 205 carries out filtering for the digital signal exported by demodulator 204, dispels burr signal.
Demodulator 204 comprises video demodulator unit and audio demodulation unit.Video demodulator unit is used for the video data in the information received to carry out video decode; Audio demodulation unit is used for the voice data in the information received to carry out audio decoder.Intelligent terminal can connecting wireless network, comprises smart mobile phone, Intelligent flat etc.
Fig. 3 is the block diagram of power module 7 in wireless synchronization multimedia projector.Power module 7 comprises EMI filter unit 701, rectification unit 702, filter unit 703, switch control unit 704, voltage transformation unit 705, output filtering unit 706.EMI filter unit 701, rectification unit 702, filter unit 703, switch control unit 704, voltage transformation unit 705, output filtering unit 706 are linked in sequence successively.
EMI filter unit 701 is for reducing the electromagnetic interference of projector; Filter unit 703 carries out filtering for the direct current exported rectification unit 702; Switch control unit 704 is for the transmission of drive current; Voltage transformation unit 705 for by DC conversion for projector work needed for voltage; Output filtering unit 706 carries out rear class filtering for the electric current exported voltage transformation unit 705.
The course of work of power module 7 is as follows.The input of EMI filter unit 701 is connected with 220V civil power, and EMI unit, by isolated to power module 7 and electrical network, on the one hand, prevents the electromagnetic wave in electrical network to be input in power module 7; On the other hand, prevent the electromagnetism clutter in power module 7 from entering electrical network, affect the use of other electric equipment.The input of EMI filter unit 701 is provided with the piezo-resistance for preventing surge current and thunderbolt.Rectification unit 702 is the rectifier bridge that four diodes are formed, and 220V alternating current becomes pulse direct current after rectification unit 702, and filter unit 703 paired pulses direct current carries out filtering, and pulse direct current is become level and smooth direct current.Switch control unit 704 receives a pulse signal, drives galvanic transmission.Voltage transformation unit 705 is made up of solenoid, and high-tension DC conversion is the direct current of 12V ~ 20V by voltage transformation unit 705, the direct current of 12V ~ 20V after output filtering unit 706 filtering needed for projector supply module power.
Combination button 9, for realizing the peace key control of projector, can realize external key to the opening or closing of projector, the adjustment of volume and the open and close etc. of projector's audio video synchronization function.
Condition prompting lamp 8 is for pointing out the operating state of projector.Preferably, under open state, when projector works, condition prompting lamp 8 sends green light; When projector is in holding state, condition prompting lamp 8 sends red light.
LED display 5 adopts the resolution of full HD display FHD1920*1080 to replace the display screen of VGA640*480, SVGA800*600, XGA024*768, SXGA1280*1024 resolution in conventional projectors, thus reaching video or the display of picture high definition, definition is than existing projector height 3-6 doubly.
The antenna 10 of this projector adopts double antenna to design and MIMO technique, can reach the Wireless Data Transmission speed of 2 times.Employing double antenna designs, and intelligent terminal is no longer limited with single-frequency bandwidth, and system by automatic decision and the antenna of switching signal the best, ensures Signal reception, brings more stable same screen mirror effect and data transmission bauds.Adopt double frequency 802.11a/b/g/n wireless network, to reach faster with shielding enjoyment; And supporting that apple, Android mobile phone/flat board are with shielding mirror image, reaching 15 meters with screen coverage, smooth with screen effect.
Operation principle of the present invention is: the mode of operation of WIFI module 3 is controlled by main control module 1, usually, WIFI module 3 is operated in ap mode, projector self sets up WIFI overlay network, realize being connected with projector after the intelligent terminal such as mobile phone, flat board searches this wireless network, then intelligent terminal is opened with shielding function.Intelligent terminal displaying video, meanwhile, receive the signal such as video flowing, audio stream of intelligent terminal institute displaying video with panel module 2, prime filter 201 pairs of signals carry out the electromagnetic interference of filtering filtering; Filtered signal is carried out amplification process by signal amplification unit 202; Serial communication unit 203 by amplify after signal synchronous transmission to demodulator 204; In demodulator 204, the video data in the signal received is carried out video decode by video demodulator unit, and the voice data in the signal received is carried out audio decoder by audio demodulation unit.The vision signal of decoding and audio signal are carried out filtering process by rear class filter 205, and then vision signal and audio signal are passed to main control module 1 process.Main control module 1 processes video signal and audio digital signals respectively, generates the video flowing and audio stream that can play; Power amplifier 5 pairs of video flowings and audio stream do and amplify process, then respectively video flowing, audio stream are passed to LED display 5 and loud speaker 4, thus realize the synchronous broadcasting of intelligent terminal.When there being wireless network covering around, under WIFI module 3 can be operated in STA mode, even if projector realizes being connected as a STA website and surrounding wireless network, thus projector realizes online browsing picture, video, and plays in real time.
Cellphone multimedia synchronized projection machine provided by the invention is connected by the WIFI of WIFI module 3 its own transmission and smart mobile phone or the intelligent terminal such as dull and stereotyped, without the need to any network (wired or wireless), therefore, service condition is very wide in range, be not subject to the impact of the network bandwidth or speed, the own WIFI that can set up a kind of 2.4G whenever and wherever possible between this multimedia synchronous projector and intelligent terminal connects, and by realizing associating between intelligent terminal with multimedia synchronous projector fast with panel module 2, thus realize the object of synchronized projection.The picture real-time synchronization that intelligent terminal is play can be shown on large scale high-definition display screen, break the restriction that intelligent terminal screen is little; Also the media streams such as the audio frequency that intelligent terminal stores, video, word and picture can be shown on large scale display screen.In addition, intelligent terminal also can the multimedia data on network is wireless be pushed on the display screen of projector.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that other improvement that those skilled in the art directly derive without departing from the basic idea of the present invention or associate and change all should be thought to be included within protection scope of the present invention.
Claims (10)
1. a wireless synchronization multimedia projector, is characterized in that:
Comprise main control module (1), same to panel module (2), WIFI module (3), loud speaker (4), LED display (5), power amplifier (6), power module (7), condition prompting lamp (8), combination button (9), antenna (10);
Main control module (1) is connected with same panel module (2), WIFI module (3), power amplifier (6), condition prompting lamp (8), combination button (9) respectively; WIFI module (3) is connected with antenna (10), same to panel module (2) respectively; Power amplifier (6) is connected with LED display (5), loud speaker (4) respectively; Power module (7) is connected with main control module (1), loud speaker (4), LED display (5) respectively;
Main control module (1) is for the reception to information, computing and process; Same panel module (2) is for receiving radio multimedium stream; WIFI module (3) is for realizing the wireless connections of projector and intelligent terminal; Loud speaker (4) is for output audio stream; LED display (5) is for display of video streams; Power amplifier (6) is for amplifying video flowing and audio stream; Power module (7) is for providing the voltage needed for work for described projector; Condition prompting lamp (8) is for pointing out the operating state of described projector; Combination button (9) controls for realizing described projector external key; Antenna (10) is as the port of described projector and intelligent terminal radio communication;
Described same panel module (2) comprises prime filter (201), signal amplification unit (202), serial communication unit (203), demodulator (204), rear class filter (205);
Prime filter (201), signal amplification unit (202), serial communication unit (203), demodulator (204), rear class filter (205) connect in turn.
2. wireless synchronization multimedia projector according to claim 1, is characterized in that:
Described WIFI module (3) has two kinds of mode of operations: ap mode, STA mode;
When WIFI module (3) is operated in ap mode, described projector is as the wireless connections of WIFI hot spot and intelligent terminal and intelligent terminal;
When WIFI module (3) is operated in ap mode, described projector is as STA website access network.
3. wireless synchronization multimedia projector according to claim 1, is characterized in that:
Described demodulator (205) comprises video demodulator unit, audio demodulation unit; Video demodulator unit is used for the video data in the information received to carry out video decode; Audio demodulation unit is used for the voice data in the information received to carry out audio decoder.
4. wireless synchronization multimedia projector according to claim 1, is characterized in that:
When projector works, described condition prompting lamp (8) sends green light; When projector is in holding state, described condition prompting lamp (8) sends red light.
5. wireless synchronization multimedia projector according to claim 1, is characterized in that:
Described same panel module (2) adopts double frequency 802.11a/b/g/n wireless network transmissions.
6. wireless synchronization multimedia projector according to claim 1, is characterized in that:
Described antenna (10) adopts double antenna design.
7. wireless synchronization multimedia projector according to claim 1, is characterized in that:
Described LED display (5) adopts FHD1920*1080 resolution.
8. wireless synchronization multimedia projector according to claim 1, is characterized in that:
Described power module (7) comprises EMI filter unit (701), rectification unit (702), filter unit (703), switch control unit (704), voltage transformation unit (705), output filtering unit (706);
EMI filter unit (701), rectification unit (702), filter unit (703), switch control unit (704), voltage transformation unit (705), output filtering unit (706) are linked in sequence successively.
9. wireless synchronization multimedia projector according to claim 7, is characterized in that:
The input of described EMI filter unit (701) is provided with the piezo-resistance for preventing surge current and thunderbolt.
10. wireless synchronization multimedia projector according to claim 7, is characterized in that:
Described rectification unit (702) is the rectifier bridge that four diodes are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610022416.2A CN105491361A (en) | 2016-01-14 | 2016-01-14 | Wireless synchronous multimedia projector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610022416.2A CN105491361A (en) | 2016-01-14 | 2016-01-14 | Wireless synchronous multimedia projector |
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| CN201610022416.2A Pending CN105491361A (en) | 2016-01-14 | 2016-01-14 | Wireless synchronous multimedia projector |
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| CN107018394A (en) * | 2017-04-18 | 2017-08-04 | 深圳市迅光智能科技有限公司 | A kind of projector for showing cellphone information |
| CN107079383A (en) * | 2016-12-16 | 2017-08-18 | 深圳前海达闼云端智能科技有限公司 | For the method for projection, device, system and electronic equipment |
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| CN108766062A (en) * | 2018-06-08 | 2018-11-06 | 华北理工大学 | A kind of multimedia teaching apparatus used of imparting knowledge to students |
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| CN109167954A (en) * | 2018-09-30 | 2019-01-08 | 厦门亿联网络技术股份有限公司 | A kind of wireless more HDMI throwing screen display devices |
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Application publication date: 20160413 |