CN101271266B - Portable digital motion picture projection integrated equipment and control method - Google Patents
Portable digital motion picture projection integrated equipment and control method Download PDFInfo
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- CN101271266B CN101271266B CN2007100872433A CN200710087243A CN101271266B CN 101271266 B CN101271266 B CN 101271266B CN 2007100872433 A CN2007100872433 A CN 2007100872433A CN 200710087243 A CN200710087243 A CN 200710087243A CN 101271266 B CN101271266 B CN 101271266B
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Abstract
The invention relates to a portable digital-film playing integral device component, a portable digital-film playing integral device using the component and a control method thereof. The portable digital-film playing integral device comprises a film player module, a power amplifier module and a projector, wherein, the film player module and the power amplifier module respectively comprise a film player mainboard and a power amplifier mainboard which are realized by a chip-grade integrated circuit board. The control method of the portable digital-film playing integral device ensures that the user can achieve the on and off operations of a playing device automatically in the form of one-key operation, which avoids the inconvenience for operating and the damage which can be caused by misoperation.
Description
Technical field
The present invention relates to a kind of portable digital motion picture projection integration apparatus and control method thereof.
Background technology
Fast development in the audio-visual technology of digitizing, traditional film formula motion picture projection technique is replaced by digital film projection technology gradually, this is because the disposable input of cinefilm (copy) is huge, serviceable life is short, can't carry out content update, and mechanical type cinematographic equipment weight is big, the volume heaviness, need the gearing of CD-ROM drive motor and complexity etc., and that digital film projector equipment has is in light weight, volume is small and exquisite, easy to carry, need not expensive film, need not complex operations, cheap characteristics, at technical elements, digital film projector equipment is mainly based on three big technical system, i.e. DLP technology, the LCD technology, the LCOS technology.
The total system of existing no film numeral cinematographic equipment mainly is made up of the two large divisions, and first is that collection signal recording, storage, broadcast are the information management system of one, second portion be collect image reduction, audio-frequency amplification is the projection system of one.The core of information management system is hard disk management device and harddisk memory, its effect is equivalent to cinefilm, but be better than cinefilm greatly, because that it has is with low cost, volume is small and exquisite, easy to use, life-span extremely longly, harmless plays and advantage such as can arbitrarily upgrade.Owing to adopted up-to-date MP4 technology, this system can use (EVD, HDV, the contour clear signal of HiVD source) film of storing tuber of stemona high image quality such as the hard disk of 120G.This hard disk information system is update content arbitrarily, and arbitrarily increases, deletes, edits movie list and content according to the projection needs, and this is by a USB interface realization at random.And relating under the situation of copyright problem, can exchange hard disk as the exchange cinefilm and realize program updating by setting up motion picture data switching centre.Projection system is made up of light source, demonstration, imaging three parts, and wherein one chip color liquid crystal scheme can be adopted in the display part, such as Sharp's projection screen, and its transmittance height, the contrast height, well arranged, bright-colored.Light source can adopt, such as, the compound Metal halogen lamp of 250W both-end, it has brightness height, beautiful in colour, Well-recovered, cheap, the advantage that the life-span is long.Imaging moiety adopts high-quality zoom projection lens, and it can change picture size arbitrarily under the situation of projection equipment invariant position.
And by digitizing technique, the picture of projection can carry out multiple effect and switch, as wide cut, cropping, miss old times or old friends, soft, high contrast, black and white or the like.And the complete machine operation realizes Full remote controlled, and loop play, spectators' program request interaction, specific functions such as commercial breaks, Karaoke are play, preset to unattended automatically.
In the digital movies mobile playing system of State Administration of Radio Film and Television film digital program administrative center, the mode of transmission distribution via satellite and the distribution of film input disc is carried out the issuing way of digital movie, and uses the terminal projection system of Highgrade integration aspect the projection of film.
In this terminal projection system, remove outside the basic motion picture projection part, also comprise projector and multichannel audio power amplifier, this can improve the video and the audio frequency output of this system, thereby reaches the audio visual effect of movie theatre level.In a kind of exemplary digital film projector system, it is mainly by projector (being projection section), and Play Server (being the motion picture projection part) and power amplifier (being the power amplifier part) three parts are formed, and each is as a separate equipment.Wherein, the video output of Play Server is connected with the video input of projector, the multichannel audio output of Play Server is connected with audio frequency power amplifier multichannel input interface, and the stereo audio output of Play Server is connected with audio frequency power amplifier left and right acoustic channels input interface.Go out beyond the essential part of said system, this system can also comprise external equipments such as multichannel audio amplifier, rack, screen, and it forms a complete digital film projector system by connecting above-mentioned projector, Play Server and power amplifier.Here, except Play Server, projector and power amplifier also all can adopt existing device, its system constitutes simple relatively, be convenient to user's operation, and with respect to above-mentioned no film numeral cinematographic equipment, owing to adopted special projector and power amplifier, it has the requisite item of existing traditional cinema Play System, thereby in the level that can both reach existing movie theatre aspect vision and the sound effect.
But, with respect to enhancing in function aspects, the shortcoming of the above-mentioned digital film projector system that possesses projector and power amplifier is, because this system has adopted special Play Server and power amplifier, and each all exists as a separate equipment, and connect by tone frequency channel wire betwixt, make this equipment aspect volume very big and and be not suitable for carrying, and increased user's inconvenience in use.
And because above-mentioned digital film projector system is by projector, three parts of Play Server and power amplifier are formed.Should be when the user uses this projection system, projector, Play Server and power amplifier all needed preheating and initialization procedure before operate as normal, and, because projector all is connected Play Server with power amplifier, under the situation of power-on, need be according to projector, the sequence of Play Server and power amplifier is carried out the preheating and the initialization procedure of each equipment.And in the middle of prior art, this is operated by user oneself, promptly, the user need at first connect projector, and wait for that the preheating of projector and initialization procedure finish, and connecting Play Server, after finishing, the preheating of Play Server and initialization procedure connect power amplifier afterwards, the burden that this has increased the user has caused the inconvenience of using.And, owing to then need user oneself manually to control, in operating process, make a mistake unavoidably, thereby cause infringement for equipment.
Therefore, need a kind of film digitizer projection equipment, it can realize the miniaturization of volume and the facilitation of operation when not reducing audio visual effect, so that the user carries and uses.
Summary of the invention
Therefore, the invention is intended to improve the problem and the shortcoming of existing digital film projector system.
The object of the present invention is to provide a kind of portable digital motion picture projection integrated equipment component, it realizes video output and the audio frequency output and the power amplification function of digital film projector equipment respectively with the surface-mounted integrated circuit of chip-scale, thereby realizes miniaturization.
The object of the present invention is to provide a kind of portable digital motion picture projection integration apparatus, its modularization by Play Server and power amplifier minimizes the volume and the quality of cinematographic equipment.
The present invention also aims to provide a kind of intelligence control method and system of portable digital motion picture projection integration apparatus, it can control the initialization and the preheating of various piece in the portable digital motion picture projection integration apparatus automatically, and need not user's independent operation.
According to purpose of the present invention, a kind of digital film projector assembly is provided, it comprises: the movie player mainboard, it is used to read cinematic data and the cinematic data that reads is decoded, with the video and audio signal of the cinematic data of exporting this decoding; One or more power amplifier mainboards, it connects movie player mainboard with from this movie player mainboard received audio signal, and to this sound signal carry out power amplification with output, and wherein, each of this movie player mainboard and power amplifier mainboard is to realize by the chip-scale integrated circuit on printed circuit board (PCB).
According to another object of the present invention, a kind of portable digital motion picture projection integration apparatus is provided, it comprises: the movie player module, it comprises movie player mainboard and movie player motherboard power supply, be used for decoding, and export the video and audio signal of the cinematic data of this decoding for the cinematic data that reads; Power amplifier module, it has power amplifier mainboard and amplifier power supply; Wherein, each of this movie player mainboard and power amplifier mainboard is to realize by the chip-scale integrated circuit on printed circuit board (PCB), connect the movie player module receiving the sound signal of this movie player module output, and the sound signal of output after amplifying; Projector, it connects the movie player module, is used for carrying out projection operation for the vision signal that receives from this movie player module.
According to another purpose of the present invention, a kind of control method of portable digital motion picture projection integration apparatus is provided, it comprises step: detect the user and whether import power-on command; Transmit control signal to the power supply of projector with the connection projector, thus the preheating and the initialized processing of execution projector; Detect the initialization of projector and whether finish,, thereby carry out the initialized processing of movie player if finish then connect the power supply of movie player module; Detect the initialization of movie player and whether finish,, carry out the thermal pretreatment of power amplifier module if finish then connect the power supply of power amplifier module; Detect and whether to finish power amplifier module, if finish then point out subscriber equipment to enter normal operating conditions.
By above-mentioned portable digital motion picture projection integration apparatus and control method thereof, can when keeping vision and auditory effect, minimize the volume and the quality of digital film projector system, be convenient to user's use.And, because system adopts integrated chip-scale design, can reduce the process of user, thereby reduce the probability of device damage for the independent connection of each equipment.And, because the integrated design of this system, reduced the complexity of raw-material use and system in the device fabrication, thereby reduced production cost.
Description of drawings
Fig. 1 shows the example block diagram according to portable digital motion picture projection integration apparatus of the present invention;
Fig. 2 shows preheating and the initialization control method according to portable digital motion picture projection integration apparatus of the present invention;
Fig. 3 is the view of the control panel of cinematographic equipment of the present invention;
Fig. 4 is the structured flowchart of intelligent control module of the present invention.
Embodiment
Describe portable digital motion picture projection integration apparatus of the present invention below with reference to the accompanying drawings in detail.
Fig. 1 shows the example block diagram according to portable digital motion picture projection integration apparatus of the present invention.Be similar to digital film projector of the prior art system, this system mainly is made up of projector, movie player module and power amplifier module.
As shown in Figure 1, portable digital motion picture projection integration apparatus 10 of the present invention mainly comprises: projector 100, film (decoding) player module 200, power amplifier module 300, wherein movie player module 200 comprises movie player mainboard 201, it connects projector 100 by video output cable, and by audio output line connection power amplifier module 300, this movie player module 200 also comprises movie player motherboard power supply 202, it connects this movie player mainboard 201 by power lead, thereby provides work required power supply to this movie player mainboard 201.In addition, in movie player module 200, also comprise hard disk 203, IC-card read write line 204, CD-ROM drive 205 and control panel 206, it connects movie player mainboard 200 by data line respectively.Wherein, hard disk 203 is used to store the film that is used for the broadcast of movie player mainboard, IC-card read write line 204 is used to read the IC-card that the user inserts, the key that is used for extracting the IC-card access is deciphered the film that reads from hard disk 203, CD-ROM drive 205 is identical with the function of existing CD-ROM drive, be used for reading film from the CD that inserts CD-ROM drive, to be stored in the middle of the hard disk or to play-over, control panel 206 comprises the LCDs that the user operates each required parts of this cinematographic equipment and shows the duty of portable digital motion picture projection integration apparatus to the user, will be discussed in more detail below the concrete operations of control panel 206.Power amplifier module 300 comprises one or more power amplifier mainboards 301, and it receives the output audio signal from movie player mainboard 201, and connects outside audio amplifier by tone frequency channel wire, and under normal conditions, each power amplifier mainboard can connect two audio amplifiers.This power amplifier module also comprises amplifier power supply 302, and it connects above-mentioned one or more power amplifier mainboard 301 by power lead, thereby provides its operate as normal required power supply to power amplifier mainboard 301 when system works.
Here, film (decoding) player mainboard 201 and power amplifier mainboard 301 have all adopted the integrated circuit (IC) design of chip-scale, thereby on two printed circuit board, realized the function of Play Server and power amplifier in the middle of the prior art respectively, made the volume and weight of portable digital motion picture projection integration apparatus 10 of the present invention with respect to reducing greatly in the prior art.For example, in the present invention, it is the surface-mounted integrated circuit realization of core that this movie player mainboard 201 can adopt with the em8621 chip of Sigma Design company exploitation, and the various peripherals that on this surface-mounted integrated circuit, are integrated and connected, for example, the interface of hard disk, CD-ROM drive, control panel etc., power amplifier mainboard 301 also is like this.Like this, movie player mainboard of the present invention and power amplifier mainboard are under the situation of operate as normal, can realize required the reading film and film is decoded of the portable digital motion picture projection integration apparatus of prior art, thereby output meets the effect of the required video and audio signal of digital film projector requirement, and it obviously realizes required independent Play Server and the power amplifier of above-mentioned effect in prior art on volume and weight.In addition, those of ordinary skill in the art also can be according to its specific (special) requirements separately, change for peripherals such as hard disk, CD-ROM drives, reach CD-ROM drive of faster reading speed or the like as changing more jumbo hard disk, thereby make this cinematographic equipment have a large amount of user-friendly extendable functions.
In addition, in the present invention, film (decoding) player mainboard 201 and one or more power amplifier mainboard 301 and other parts, connection as hard disk, CD-ROM drive, audio amplifier etc. has been finished by the technician in dispatching from the factory, and the every technical parameter at this cinematographic equipment requires to debug, so that this movie equipment can be in optimum state is set.This also avoided the user operate in the middle of equipment that incorrect link has been brought can't operate as normal, or even the problem of parts damages.
In addition, in order to coordinate the work of each module in this film projection system, the problem of the manual initialization of user and each module of preheating in the film projection system of solution prior art, in portable digital motion picture projection integration apparatus 10 of the present invention, also comprise intelligent control module 400, it is connected to projector 100 by data line respectively, movie player mainboard 201 and one or more power amplifier mainboard 301, so that detect projector 100 respectively, the state of movie player mainboard 201 and power amplifier mainboard 301, thereby control its operation by broadcasting control signal, and, this intelligent control module 400 also connects movie player motherboard power supply 202 and amplifier power supply 302, so that control switches on and off the power supply of movie player mainboard 201 and power amplifier mainboard 301.Like this, this intelligent control module can be connected under the situation of switch of this cinematographic equipment the user, finishes projector 100 automatically, the preheating and the initialization procedure of movie player mainboard 201 and power amplifier mainboard 301.
Below, will describe the initialization procedure of film digitizer of the present invention system with reference to the process flow diagram of figure 2 in detail.
At first, when the start button on the control panel that the user wants to use this equipment and press this cinematographic equipment (S100), this intelligent control module 400 sends starting-up signal to projector 100, so that open the power supply of projector 100, thereby make projector 100 preheatings (S201), and the initialization procedure (S202) of beginning projector 100.At this moment, this intelligent control module 400 continues to detect the state of projector 100, after the initialization that detects projector 100 is finished (S203), transmit a signal to movie player motherboard power supply 202, so that opening power and be movie player mainboard 201 power supply (S301).Movie player mainboard 201 begins its initialization procedure (S302) after energized, at this moment, intelligent control module 400 continues to detect the initialization procedure of movie player mainboard 201, and after the initialization procedure that detects movie player mainboard 201 finishes (S303), transmit a signal to power amplifier mainboard power supply 302, thereby be 302 power supplies (S401) of power amplifier mainboard power supply.Power amplifier mainboard 301 begins preheating (S402) after power supply opening, and connects audio amplifier (S403) after preheating.At this moment, this cinematographic equipment enters normal operating conditions.
When the user wants to close this equipment, imported shutdown command detecting the user, for example, when the user presses the start button, this intelligent control module 400 is controlled these systems with the order opposite with the said system start process, that is, and and with power amplifier module, the above-mentioned module of lasting orderly close-down of movie module and projector, thus realize safety shutdown devices.
Like this, by the Based Intelligent Control in the middle of above-mentioned this cinematographic equipment switching on and shutting down process, this intelligence control method is by the duty of each parts of detection, and transmitting control commands is to control the operation of each parts, coordinated the preheating between each module, the initialization problem.This intelligence control method makes the user only need press the start button when switching on and shutting down and gets final product the inconvenience of having avoided loaded down with trivial details switching on and shutting down process to bring for the user.And this switching on and shutting down process is finished automatically by system control, has avoided, and for example, directly start does not have image thereby projector has preheating, or not preheating and directly open and connect audio amplifier and produce problem such as sonic boom of power amplifier.
In addition, according to top described, power amplifier module 300 of the present invention can comprise one or more power amplifier mainboards 301, and each power amplifier mainboard 301 connects two audio amplifiers.Here, according to the needs of user for sound quality, for example, stereo, surround sound, 5.1 channel stereo etc., this intelligent control module is optionally opened one or more in this power amplifier mainboard 301, thereby realize the required acoustics of user, will specify the structure and the control procedure thereof of intelligent control module of the present invention below with reference to figure 4.
Fig. 3 is the view of the control panel 206 of cinematographic equipment of the present invention, now, will describe the concrete work of cinematographic equipment of the present invention with reference to figure 3.
As shown in Figure 3, the control panel 206 of cinematographic equipment of the present invention comprises main liquid crystal display panel 300, a plurality of action buttons 301, CD-ROM drive 302, USB interface 303 and IC-card insert mouth 304, and volume is regulated button 305, secondary LCDs 306, track selecting button 307 and microphone interface 308.Wherein main this LCDs 300 is used for the display operation menu, the user is by operation accordingly in operation push-button button 301 choice menus, CD-ROM drive 302 is used to insert the CD that is used to download film, USB interface 303 is used to insert the USB hard disk that stores film or the memory storage of other USB connected mode, IC-card inserts mouth 304 and is used to insert film decoding card, volume is regulated button 305 and is used for regulating the volume that power amplifier mainboard is exported by the user, track selecting button 307 is used to select the number of channels of user's needs, and secondary LCDs 306 is used for the channel number of the current selection of explicit user.Microphone interface 308 is used to connect external microphone, so as in the motion picture projection process or before or after, use microphone to be correlated with by the user and explain and publicise.
Certainly, those of ordinary skills can expect, according to the use needs of user for this portable cinematographic equipment, except above-mentioned main liquid crystal display panel and secondary LCDs, can comprise also on the control panel of the present invention that more display screen to show other relevant information, perhaps uses a display screen to show the function of above-mentioned main liquid crystal display panel and secondary LCDs.In like manner, the present invention also can comprise the one or more buttons of realizing other function and the one or more interfaces that connect other external equipment, perhaps, reduce the number of button and interface by the equipment that merges or the performed function of delete button is connected with interface according to user's needs.Above-mentioned explanation only is exemplary, and the present invention is not limited to the number and the function of described concrete LCDs, action button and interface.
The concrete operations of user for this cinematographic equipment will be described below, after the user presses the start button, as previously mentioned, system carries out automatic initialization and warm, and shows the Control-Menu of this equipment after equipment can operate as normal on display panel.At this moment, the user can be by a plurality of action button 301 input various commands, and as the film information of storing in inquiry film decoding card and the hard disk, movie is provided with the operations such as every attribute of cinematographic equipment.When the user wants outside CD to be inserted CD-ROM drive 302, or outside hard disk is connected USB interface 303 when outside CD or outside hard disk read film, thereby in the middle of the hard disk with the film information fetch equipment in outside CD or the outside hard disk itself.When inserting IC-card with film decoding card, the user inserts mouthfuls 304 and during order by action button 301 input movie, the information that the film that reads in information that equipment reads can blocking decoding from film and the hard disk carries compares, thereby determines whether this film can be play by this cinematographic equipment.And under the situation of playing this film, change for the relevant information in the film decoding card.In the movie process, the user also can use video demonstration the carry out required adjusting of action button 301 for projection equipment, and uses volume adjusting button 305 and sound channel selector button 307 to regulate for the audio frequency output of projection equipment.After playing end, the user imports shutdown command, and as pressing the start button once more, then equipment is finished shutdown process automatically under the control of intelligent control module.
Fig. 4 shows the structured flowchart according to intelligent control module 400 of the present invention, and as shown in the figure, intelligent control module 400 of the present invention mainly comprises controller 410 and one or more relay 420.In the present invention, controller 410 is a single-chip microcomputer, and this relay 420 can be embodied as can be by monolithic processor controlled electronic switch.This controller 410 connects movie player mainboard and power amplifier mainboard by data line respectively, thereby read its status information with the signal that receives from movie player mainboard and power amplifier mainboard, and transmit control signal to projector, movie player power supply and amplifier power supply through data line by analyzing its status information.Here, according to top control flow about the described portable digital motion picture projection integration apparatus of the present invention of Fig. 2, if show the power supply that to connect projector, movie player module or power amplifier module, then Single-chip Controlling is opened above-mentioned one or more electronic switch, thereby transmits control signal to connect above-mentioned projector, movie player power supply and amplifier power supply.In addition, as discussed previously, in order to satisfy the sound equipment requirement of different user, the present invention can connect in a plurality of power amplifier mainboards at least one or a plurality of.For example, go for stereophonic effect as the user, the user can pass through track selecting button 307 input commands, like this, controller will be controlled the power supply of connecting one of a plurality of power amplifier mainboards, thereby two audio amplifiers that connect to connect this power amplifier mainboard realizing stereo required left and right acoustic channels effect, and show current two audio amplifiers having connected a power amplifier mainboard on secondary LCDs 306.And if the user goes for the surround sound effect of 5.1 sound channels of using usually in the digital camera, the user can be by track selecting button 307 input commands to connect the power supply of three power amplifier mainboards, thereby connect six audio amplifiers, to realize 5.1 surround sound effects, at this moment, with top similar, on secondary LCDs 306, show current six audio amplifiers having connected three power amplifier mainboards.
Like this, by above-mentioned integrated portable portable digital motion picture projection integration apparatus design, the present invention can realize the portable digital motion picture projection integration apparatus that volume and weight all reduces greatly with respect to existing digital film projector equipment, thereby is convenient to user's use.
In addition, the automatic control of the intelligent control module by this portable digital motion picture projection integration apparatus, the present invention can control the preheating and the initialization procedure of each module of this cinematographic equipment automatically, thereby reduces user's inconvenience and the possible infringement to cinematographic equipment.
Claims (10)
1. portable digital motion picture projection integration apparatus, it comprises:
The movie player module, it comprises movie player mainboard and movie player motherboard power supply, is used for decoding for the cinematic data that reads, and exports the video and audio signal of the cinematic data of this decoding;
Power amplifier module, it has power amplifier mainboard and amplifier power supply, connects the movie player module receiving the sound signal of this movie player module output, and the sound signal of output after amplifying;
Wherein, each of this movie player mainboard and power amplifier mainboard is to realize by the chip-scale integrated circuit on printed circuit board (PCB);
Projector, it connects the movie player module, is used for carrying out projection operation for the vision signal that receives from this movie player module; And
One intelligent control module, it connects the movie player mainboard by data line respectively, power amplifier mainboard and projector, and by data line connection movie player power supply and power amplifier mainboard power supply, be used to detect the duty of above-mentioned movie player mainboard, power amplifier mainboard and projector, and transmit control signal automatically to control the work of above-mentioned parts.
2. portable digital motion picture projection integration apparatus as claimed in claim 1, wherein, this movie player module further comprises the hard disk that is used to store film data, be used to read the CD-ROM drive of CD, be used to read the IC-card read write line of film decoding card and be used for by user's operation with the input various command be used to be connected various external equipments and display device current working state control panel to the user.
3. portable digital motion picture projection integration apparatus as claimed in claim 2, wherein, the coupling of the key of the key that reads from film decoding card by this IC-card read write line of this movie player mainboard and the film data of storing in hard disk to read the film data of storage from hard disk.
4. portable digital motion picture projection integration apparatus as claimed in claim 2, wherein, the coupling of the key of the key that reads from film decoding card by this IC-card read write line of this movie player mainboard and the film data of storing in CD to read film data from CD.
5. portable digital motion picture projection integration apparatus as claimed in claim 2, wherein, this control panel comprises a plurality of buttons that are used for being imported by the user multiple order, and information such as the duty of display system are given one or more LCDs of user and inserted the interface of external equipment.
6. portable digital motion picture projection integration apparatus as claimed in claim 1, wherein, this intelligent control module comprises controller and one or more relay.
7. the control method of a portable digital motion picture projection integration apparatus, it comprises step:
Detect the user and whether import power-on command;
Transmit control signal to the power supply of projector, and carry out the preheating and the initialized processing of projector with the connection projector;
Detect the initialization of projector and whether finish,, and carry out the initialized processing of movie player if finish then connect the power supply of movie player module;
Detect the initialization of movie player and whether finish,, then carry out the thermal pretreatment of power amplifier module if finish then connect the power supply of power amplifier module;
Detect and whether to finish the preheating of power amplifier module, if finish then point out subscriber equipment to enter normal operating conditions.
8. method as claimed in claim 7, wherein, whether this detection user imports the step of power-on command and whether presses the realization of start button by detecting the user.
9. method as claimed in claim 7, wherein, by on the control panel listen or visual display prompting subscriber equipment enters normal operating conditions.
10. method as claimed in claim 7 wherein, is connected the connection between power amplifier module and the audio amplifier after subscriber equipment enters normal operating conditions.
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| CN2007100872433A CN101271266B (en) | 2007-03-22 | 2007-03-22 | Portable digital motion picture projection integrated equipment and control method |
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| CN2007100872433A CN101271266B (en) | 2007-03-22 | 2007-03-22 | Portable digital motion picture projection integrated equipment and control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1778104A (en) * | 2003-05-23 | 2006-05-24 | Il&Fs教育和科技服务有限公司 | Portable projection device |
| CN2869936Y (en) * | 2006-01-19 | 2007-02-14 | 青岛双百数字科技有限公司 | Telecontrolled integrated digital film projector |
| CN2869935Y (en) * | 2006-01-19 | 2007-02-14 | 青岛双百数字科技有限公司 | Touch-control type integrated digital film prejector |
| CN2872412Y (en) * | 2006-02-23 | 2007-02-21 | 北京老来乐网络文化传播有限公司 | Integrated housing of digital film projector |
-
2007
- 2007-03-22 CN CN2007100872433A patent/CN101271266B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1778104A (en) * | 2003-05-23 | 2006-05-24 | Il&Fs教育和科技服务有限公司 | Portable projection device |
| CN2869936Y (en) * | 2006-01-19 | 2007-02-14 | 青岛双百数字科技有限公司 | Telecontrolled integrated digital film projector |
| CN2869935Y (en) * | 2006-01-19 | 2007-02-14 | 青岛双百数字科技有限公司 | Touch-control type integrated digital film prejector |
| CN2872412Y (en) * | 2006-02-23 | 2007-02-21 | 北京老来乐网络文化传播有限公司 | Integrated housing of digital film projector |
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| CN101271266A (en) | 2008-09-24 |
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