CN101377677A - Projector network control system - Google Patents
Projector network control system Download PDFInfo
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- CN101377677A CN101377677A CNA2008101388235A CN200810138823A CN101377677A CN 101377677 A CN101377677 A CN 101377677A CN A2008101388235 A CNA2008101388235 A CN A2008101388235A CN 200810138823 A CN200810138823 A CN 200810138823A CN 101377677 A CN101377677 A CN 101377677A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
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Abstract
The present invention provides a projector network control system. The projector network control system comprises a projector, a network interface module and a control terminal; wherein, the projector comprises a controller and a first interface; the network interface module comprises an Ethernet controller, an Ethernet interface and a second interface; the first interface is connected with the second interface; and the Ethernet interface and the control terminal are simultaneously connected with the Ethernet and communicate with each other through the Ethernet. The present invention realizes the communication between the control terminal and the projector with the network interface chip, can be conveniently connected with projectors with different MCUs, has the advantages of low cost and high universality, and overcomes the defects of poor universality and high cost in the prior projector network connection.
Description
Technical field
The present invention relates to a kind of projector control system, relate to a kind of projector network control system more specifically.
Background technology
Along with the continuous development of network technology, Internet has become the important component part of information society, and the Internet technology will be deep in daily life and the used electronic equipment of work.We know that one of main expulsive force that the Internet technology is developed rapidly is the very ripe PC industry of standard.No matter be the hardware platform of PC, or operation system of software is all highly standardized, the also different small differences of the mode of operation of online.Yet just different with the household electrical appliance situation for all kinds of intelligent apparatus, their " heart " is a chip that is referred to as microcontroller (MCU), is commonly called as single-chip microcomputer.Because it is hundreds of that the microcontroller chip kind reaches, the hardware configuration and the order set of these microcontrollers have nothing in common with each other, and therefore, can not directly insert the Internet network by hardware interface and the interface software by standard as PC.How to allow all kinds of intelligent apparatus or household electrical appliance and Internet couple together, can make full use of existing Internet technology and resource, can all kinds of intelligent apparatus or household electrical appliance and Internet be coupled together with very low cost again, so that people can long-range these electronic equipments of acquisition information and control their operation, become the focus that today, information circle was paid close attention to.
In recent years, projector equipment, for example, digital projector is as own through more and more universal to the instrument of spectators' repertoire content.These projector are normally shown the content that computing machine produced on the surface of watching, and can show the image of the high-quality specialty level of certain size scope easily to spectators to allow the user.Therefore, now often with these projector equipments fixedly professional equipment and other Conference facilities. as the conference hall.Some unit, for example, commerce and school, often many projector equipments are installed in higher position or space that some are narrow, a lot of platform projections need be stacked such as also having some large-screen splicing walls, if the expense that needs after an a certain like this machine goes wrong to send someone to dismantle, keep in repair, install may be very high, bring very big inconvenience for the maintenance and management of machine.Whether whether the duties such as bulb, colour wheel, fan that are difficult to recognize all projector equipments whether are normal, perhaps have projector equipment to be stolen or move.If in time do not repair before use, then this class problem just may be incured loss through delay the user who wishes to use selected projector equipment.The management control of relevant a plurality of projector equipments can cause similar problem, for example, under the unrestricted situation of function that changes the projector equipment setting, selected the user of projector equipment must before using this projector equipment presentation content, change the setting that previous user kept afterwards.In addition, the user may forget and closes projector equipment, so can reduce the life-span of projector equipment shot-light.
As if the appearance of networked projection's machine solved this problem.The projector that networked projection's machine promptly can be controlled by network.Networked projection can realize by wired and wireless mode: wired form is meant directly netting twine is connected to network interface in the projector; Wireless mode then refer to projector built-in wireless network card, can realize that wireless network connects.Yet networked projection's technology is not also sought unity of standard at present, and the load mode between the different brands has nothing in common with each other.Present most of networked projections machine has all comprised two parts, and a part is the corresponding network management software of computer terminal; Another part is calculating, storage and the control system in the projector, finish networked projection's function, projector is except possessing the network function module, also need a computer system, to finish the conversion of network management, reception metadata cache and display message to shows signal with perfect calculating, storage and control ability.So just a problem occurred, if if having the projector that two or more is arranged in system of a plurality of projectors, the control computer of terminal is controlled with regard to needing different software, and some situation is complicated more possibly.And networked projection's machine of specialty costs an arm and a leg, if all projectors of original system are changed, cost is high, and original projector also can't play a role.
Therefore, the method that this area needs the network control of a kind of projector not only can control the projector that current great majority do not have network control function, and cost is lower.
Summary of the invention
In order to address the above problem, the invention provides a kind of projector network control system, described projector network control system comprises projector, Network Interface Module and control terminal, described projector comprises the controller and first interface; Network Interface Module comprises ethernet controller, Ethernet interface and second interface; Described first interface connects described second interface, and described Ethernet interface is connected Ethernet simultaneously with described control terminal, communicates by Ethernet.
Described ethernet controller is a network interface chip.
Described network interface chip comprises T transmission and receiving filter and functional module interface, is used for sending and receiving ethernet data frame.
Described network interface chip communicates by MCUNet agreement and described second interface.
Described second interface is the SPI interface.
Further, the present invention also provides a kind of projector, comprises that described projector comprises the controller and first interface, and described projector also comprises a Network Interface Module, and described Network Interface Module comprises ethernet controller, Ethernet interface and second interface; Described first interface connects described second interface, and described Ethernet interface connects Ethernet.
Described ethernet controller is a network interface chip.
Described network interface chip comprises T transmission and receiving filter and functional module interface, is used for sending and receiving ethernet data frame.
Described network interface chip communicates by MCUNet agreement and described second interface.
Described second interface is the SPI interface.
The present invention adopts the method for network interface chip to realize communicating by letter between control terminal and the projector, communication between control terminal and the projector is finished by network interface chip, because network interface chip is the private NNI chip that is independent of MCU, the control communication between it and the projector can realize by the SPI interface.Therefore, projector network control system of the present invention can make things convenient for and projector with various different MCU connects, and realizes with low costly, and highly versatile has solved the existing projector network connection shortcoming that versatility is poor, cost is higher.
Description of drawings
Figure 1 shows that the synoptic diagram of a projector.
Figure 2 shows that the schematic diagram of projector 100.
Figure 3 shows that the synoptic diagram of the embodiment of a projector network control system of the present invention.
Embodiment
In order to make those skilled in the art understand the present invention program better, and above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Figure 1 shows that the synoptic diagram of a projector.Figure 2 shows that the schematic diagram of projector 100.As shown in the figure, projector 100 comprises a controller 110, an instruction interface 120 and a storer 130.During operate as normal, instruction interface 120 receives external command, and the external command that receives is sent to controller 110, and controller 110 receives this external command and responds, the work of control projector 100.Storer 130 storage number order codes and user's setting or the like information, controller 110 can call the related content that is stored in the storer 130 when work.
Figure 3 shows that the synoptic diagram of the embodiment of a projector network control system of the present invention.As shown in the figure, the projector network control system of present embodiment comprises projector 100, Network Interface Module 200 and control terminal 300.Projector 100 comprises controller 110, instruction interface 120 and storer 130; Network Interface Module 200 comprises ethernet controller 210, Ethernet interface 220 and equipment interface 230.The instruction interface 120 of projector 100 connects the equipment interface 230 of Network Interface Module 200, and the Ethernet interface of Network Interface Module 200 connects Ethernet, and control terminal 300 communicates by Ethernet and Network Interface Module 200.
Concrete, projector 100 can be a common projector, projector 100 comprises controller 110, instruction interface 120 and storer 130.During operate as normal, instruction interface 120 receives the instruction from Network Interface Module 200, and the instruction that will receive sends to controller 110, and controller 110 receives these external commands and also responds, the work of control projector 100.Controller 110 can also send to Network Interface Module 200 with relevant data by instruction interface 120 according to the instruction that receives.The controller 110 here can be an embedded MCU, also can be the chip of a special use.
The ethernet controller 210 of present embodiment is a network interface chip Webchip, Webchip is the integrated ethernet controller of a kind of height, T transmission and receiving filter, functional module interface have been generally comprised, be responsible for the transmission and the reception of ethernet data frame, comprise collision detection, frame head generation, frame stores processor etc.Because Webchip is a kind of universal standardization product that is independent of various microcontrollers, when the slip-stick artist uses the Webchip exploitation to have the intelligent apparatus of network function, neither need to understand complicated network technology, do not need to change original mature design yet, need only increase a bit of interface routine of communicating by letter and get final product with Webchip.
Being example with the PS2000 chip below describes the ethernet controller 210 of present embodiment:
PS2000 is the important member in the Webchip network interface series, and it mainly is made up of key control unit, UART, embedded Modem interface module, standard Modem interface, RS-485 transmitting-receiving control module, LED demonstration control, DS2401 interface, SPI interface module etc.Key control unit is mainly realized communication and protocol conversion; The DS2401 interface is the electronic tag interface, is used to connect the DS2401 integrated circuit, for electronic equipment provides only electronic standard; By the SPI serial line interface, can be connected with the MCU application system is convenient; The state display interface is driving LED directly; Have multiple serial communication mode available---can external RS-232, RS485, interface circuit such as embedded Modem or standard Modem, also can select RF or IrDA communication mode for use.PS2000 is 44 pin MQFP encapsulation, adopts single 5V power supply, have volume little, low in energy consumption, with the characteristics such as procotol compatibility of emGatewayTM.
The PS2000 inside solidification MCUNet agreement.The MCUNet agreement is that the Gateway on MCU electronic equipment and the computer platform sets up a kind of software protocol of getting in touch, and simple in structure, function is strong, with emGateway and OSGI protocol-compliant.At first, the MCUNet agreement has been stipulated a kind of master slave relation, and Gateway is main system (master) forever, and electronic equipment is from system (slave) forever.Gateway can authorize electronic equipment clawback (Callback).Secondly, MCUNet has defined the state performance parameter list (capabilitiestable) and the argument table (variablestable) of electronic apparatus system.The process of message exchange is based upon on MCU system state performance parameter table and the argument table basis between electronic equipment and the Gateway.The effect of the system state performance parameter table of electronic equipment is to tell Gateway some characterisitic parameters of electronic apparatus system, as size of the shared byte number of number, the argument table of variable in the system variable table, nonvolatile memory, the expression type of character string (ASCII, UNICODE or other) etc.The effect of the coefficient variation table of electronic equipment is exactly that the information that needs between MCU and the Gateway to exchange is enumerated out, expresses by an argument table.The information of all exchanges is all within the expression scope of this argument table between MCU and the Gateway.The information that exceeds argument table, Grateway is with off the docket.
Since the PS2000 inside solidification MCUNet agreement, it and emGateway and OSGI protocol-compliant.Application system designer needn't consider any procotol fully, need only explain and carry out the instruction and data that PS2000 sends and just can realize being connected with the Internet network.The MCUNet procotol is finished by PS2000, selects the UART interface chip during as UART system of design for use.
The equipment interface 230 of present embodiment can be a SPI interface.SPI is the abbreviation of English SerialPeripheral interface, as the term suggests be exactly Serial Peripheral Interface.The SPI interface is mainly used in EEPROM, FLASH, and real-time clock, AD converter also has between digital signal processor and the digital signal decoder.SPI is a kind of high speed, full duplex, synchronous communication bus, and on the pin of chip, only take four lines, saved the pin of chip, saved the space on the layout of PCB simultaneously, provided convenience, just for this characteristic that is simple and easy to usefulness, this communication protocol that now increasing chip is integrated.
The Principle of Communication of SPI is very simple, and it is with master-slave mode work, and this pattern has a main equipment and one or more slave unit usually, needs at least 4 lines, in fact 3 also can (during one-way transmission).Also be that all are total based on the equipment of SPI, they are SDI (data inputs), SDO (data output), SCK (clock), CS (sheet choosing).
(1) SDO-main equipment data output, the input of slave unit data
(2) SDI-main equipment data input, the output of slave unit data
(3) SCLK-clock signal is produced by main equipment
(4) CS-slave unit enable signal is controlled by main equipment
Wherein CS is whether control chip is selected, that is to say (noble potential or electronegative potential) when having only chip selection signal to be the enable signal of predesignating, and is just effective to the operation of this chip.This just allows to connect a plurality of SPI equipment on same bus become possibility.
Next 3 lines of communication just have been responsible for.Communication is finished by exchanges data, will know earlier that here SPI is a serial communication protocol, that is to say that data are transmission of one one.The reason of SCK clock line existence that Here it is provides time clock by SCK, and SDI, SDO then finish data transmission based on this pulse.Data output is by the SDO line, and data change when rising edge clock or negative edge, are read at back to back negative edge or rising edge.It is reportedly defeated to finish one digit number, and same principle is also used in input.Like this, in the change of at least 8 clock signals (upper edge and lower edge for once), just can finish the transmission of 8 bit data.
Be noted that the SCK signal wire only by main equipment control, slave unit can not control signal wire.Equally, in a equipment, has a main control equipment at least based on SPI.Chuan Shu characteristics like this: such transmission mode has an advantage, different with common serial communication, common serial communication one-time continuous transmits at least 8 bit data, and SPI allows the transmission of one one of data, even allow to suspend, because the SCK clock line is controlled by main control equipment, when not having the clock saltus step, data are not gathered or transmitted to slave unit.That is to say that main equipment is by finishing the control to communication to the control of SCK clock line.SPI still is a data exchange agreement: because the data input and output line of SPI is independent, so allow to finish simultaneously the input and output of data.The implementation of different SPI equipment is not quite similar, and mainly is the asynchronism(-nization) that data change and gather, in the clock signal upper edge or the lower edge gather different definition arranged.In point-to-point communication, the SPI interface does not need to carry out addressing operation, and is full-duplex communication, seems simple efficient.
The Ethernet interface 220 of present embodiment can be common RJ45 interface.RJ45。Be the network interface of standard, no longer describe in detail here.
By top explanation as can be seen, the Network Interface Module 200 of present embodiment is connected with Ethernet by RJ45 Ethernet interface 220 on the one hand, link to each other with the controller 110 of projector 100 by the SPI interface on the other hand, receive the data relevant with transmission by ethernet controller 210 controls.Control terminal 300 is connected on the Ethernet equally, and like this, control terminal 300 just can communicate by Ethernet and Network Interface Module 200.
When the user need control projector 100, only need user interface input corresponding instruction by control terminal 300, control terminal 300 receives user's instruction and it is encapsulated, and says that the relevant information of target projection machine is sent to Ethernet together.Ethernet controller 210 detects the data in the Ethernet at any time, when destination address that detects a certain instruction and own address are complementary, receives also corresponding this instruction.Ethernet controller 210 sends to projector 100 with the instruction transformation that receives for the signal that is fit to the SPI interface, projector 100 receives this instruction and sends it to controller 110 by instruction interface 120, controller 110 these instructions of response are controlled projector 100.
Detect instruction if the instruction that controller 110 receives is one, for example detect the temperature when front projection machine, controller 110 need feed back to control terminal 300 with the temperature information that detects.Controller 110 at first sends to Network Interface Module 200 with detected temperature information by instruction interface 120, Network Interface Module 200 receives this information by equipment interface 230, and send it to ethernet controller 210, ethernet controller 210 is packaged into the form of ethernet data frame with this information and the relevant information (for example IP address) that adds control terminal 300, is sent to Ethernet by Ethernet interface 220.Control terminal 300 detects the data in the Ethernet equally, when destination address that detects a certain ethernet data frame and own address are complementary, receives also this ethernet data frame.Control terminal shows by user interface this Frame processing back such as decode, to tell the Current Temperatures of user projector 100.
More than be exactly the implementation method of projector network control system of the present invention and the concrete course of work.The present invention adopts the method for Webchip to realize communicating by letter between control terminal and the projector, communication between control terminal and the projector is finished by Webchip, because Webchip is the private NNI chip that is independent of MCU, the control communication between it and the projector can realize by the SPI interface.Therefore, projector network control system of the present invention can make things convenient for and the projector's connection with various different MCU, and Webchip supports physical interfaces such as RS-232, USB by MCUNet agreement and gateway communication.Realize with low costly, highly versatile has solved existing projector network and has connected the shortcoming that versatility is poor, cost is higher.
Certainly; above-mentioned explanation is not to be limitation of the present invention; the present invention also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (10)
1, a kind of projector network control system is characterized in that, described projector network control system comprises projector, Network Interface Module and control terminal, and described projector comprises the controller and first interface; Network Interface Module comprises ethernet controller, Ethernet interface and second interface; Described first interface connects described second interface, and described Ethernet interface is connected Ethernet simultaneously with described control terminal, communicates by Ethernet.
2, projector network control system according to claim 1 is characterized in that: described ethernet controller is a network interface chip.
3, projector network control system according to claim 2 is characterized in that: described network interface chip comprises T transmission and receiving filter and functional module interface, is used for sending and receiving ethernet data frame.
4, according to the arbitrary described projector network control system of claim 1-3, it is characterized in that: described network interface chip communicates by MCUNet agreement and described second interface.
5, according to the arbitrary described projector network control system of claim 4, it is characterized in that: described second interface is the SPI interface.
6, a kind of projector, comprise that described projector comprises the controller and first interface, is characterized in that: described projector also comprises a Network Interface Module, and described Network Interface Module comprises ethernet controller, Ethernet interface and second interface; Described first interface connects described second interface, and described Ethernet interface is used to connect Ethernet.
7, projector network control system according to claim 6 is characterized in that: described ethernet controller is a network interface chip.
8, projector network control system according to claim 7 is characterized in that: described network interface chip comprises T transmission and receiving filter and functional module interface, is used for sending and receiving ethernet data frame.
9, according to the arbitrary described projector network control system of claim 6-8, it is characterized in that: described network interface chip communicates by MCUNet agreement and described second interface.
10, projector network control system according to claim 9 is characterized in that: described second interface is the SPI interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101388235A CN101377677A (en) | 2008-08-01 | 2008-08-01 | Projector network control system |
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| CNA2008101388235A CN101377677A (en) | 2008-08-01 | 2008-08-01 | Projector network control system |
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| CN101377677A true CN101377677A (en) | 2009-03-04 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102932193A (en) * | 2012-11-28 | 2013-02-13 | 迈普通信技术股份有限公司 | Network device, management terminal and configuration management system |
| CN103678221A (en) * | 2013-12-27 | 2014-03-26 | 广东威创视讯科技股份有限公司 | Method and mobile device for acquiring operation information of spliced-wall system |
| CN104808619A (en) * | 2015-03-07 | 2015-07-29 | 上海恩辅信息科技有限公司 | Internet of things equipment control system based on automatic environment light control and method |
| CN107037756A (en) * | 2017-04-17 | 2017-08-11 | 北京京东尚科信息技术有限公司 | Data transmission method and device |
| CN107679002A (en) * | 2017-11-27 | 2018-02-09 | 中山路得斯空调有限公司 | A kind of data buffer storage formula communication device |
| CN108446088A (en) * | 2018-04-18 | 2018-08-24 | 广州视源电子科技股份有限公司 | Terminal and screen projection system |
| CN108615508A (en) * | 2018-04-02 | 2018-10-02 | 屏丽科技成都有限责任公司 | A kind of method for changing liquid crystal display display mode and the LCD projection devices using this method |
| CN112289087A (en) * | 2020-11-23 | 2021-01-29 | 杭州云梯科技有限公司 | Intelligent teaching system based on projection equipment |
-
2008
- 2008-08-01 CN CNA2008101388235A patent/CN101377677A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102932193A (en) * | 2012-11-28 | 2013-02-13 | 迈普通信技术股份有限公司 | Network device, management terminal and configuration management system |
| CN103678221A (en) * | 2013-12-27 | 2014-03-26 | 广东威创视讯科技股份有限公司 | Method and mobile device for acquiring operation information of spliced-wall system |
| CN104808619A (en) * | 2015-03-07 | 2015-07-29 | 上海恩辅信息科技有限公司 | Internet of things equipment control system based on automatic environment light control and method |
| CN107037756A (en) * | 2017-04-17 | 2017-08-11 | 北京京东尚科信息技术有限公司 | Data transmission method and device |
| CN107037756B (en) * | 2017-04-17 | 2020-11-20 | 北京京东尚科信息技术有限公司 | Data transmission method and device |
| CN107679002A (en) * | 2017-11-27 | 2018-02-09 | 中山路得斯空调有限公司 | A kind of data buffer storage formula communication device |
| CN107679002B (en) * | 2017-11-27 | 2020-04-10 | 中山路得斯空调有限公司 | Main control circuit of data caching type communication device |
| CN108615508A (en) * | 2018-04-02 | 2018-10-02 | 屏丽科技成都有限责任公司 | A kind of method for changing liquid crystal display display mode and the LCD projection devices using this method |
| CN108446088A (en) * | 2018-04-18 | 2018-08-24 | 广州视源电子科技股份有限公司 | Terminal and screen projection system |
| CN112289087A (en) * | 2020-11-23 | 2021-01-29 | 杭州云梯科技有限公司 | Intelligent teaching system based on projection equipment |
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Open date: 20090304 |