WO2012083568A1

WO2012083568A1 - Micro-projector

Info

Publication number: WO2012083568A1
Application number: PCT/CN2010/080298
Authority: WO
Inventors: 张志军
Original assignee: 河南中光学集团有限公司
Priority date: 2010-12-23
Filing date: 2010-12-27
Publication date: 2012-06-28
Also published as: CN201945794U

Abstract

A micro-projector comprises an interface part for receiving at least one of a video file, a dynamic or static file; a format process part for processing the file received from the interface part as an information to be adapted for display of the micro-projector; an optical projection imaging part; a screen display control part for projecting the information processed by the format process part through the optical projection imaging part; a main control part for controlling a cooperation of the control interface part, the format process part, the optical projection imaging part and the screen display control part; and wherein the interface part is at least one of wireless interfaces such as a Bluetooth, WiFi, infrared and DLNA etc..

Description

Micro projector

The present invention relates to a projector, and more particularly to a pico projector. Background technique

Although the conventional projector provides a large screen effect, the body is bulky and inconvenient to carry, and its high lamp replacement cost hinders the application of the projector (especially in the home and portable business field) and popularity. With the development and widespread use of various portable devices, such as digital cameras, digital video cameras, portable multimedia players, portable digital assistant PDAs, notebooks, mobile phones, etc., projector manufacturers are working hard to promote the demand for portability. By reducing the size and weight of the projector, a pico projector (also known as a pocket projector) is produced after the portable projector.

Compared to a normal or portable projector, the pico projector is more compact and easy to carry, and can project images of the same quality as the former two in a short distance, so ^ J1⁄2.

The current micro projector can be divided into a light emitting diode (LED) and a laser light source from the perspective of the light source, wherein the LED light source has the advantage of high brightness and energy saving, and the laser light source has the advantage of high focusing accuracy. The micro-projector can be divided into liquid crystal on silicon (LCoS) technology and Digital Light Process (DLP) technology developed by Texas Instruments. Among them, the DLP display technology mainly uses a single-chip or multi-chip digital micromirror device (DMD) chip as an imaging device, and a projection technique for realizing a projected image by adjusting reflected light. The imaging principle of LCoS display technology is similar to that of liquid crystal LCD, except that it is controlled by light (liquid crystal is transmitted light control). The pico projector can be divided into multimedia and non-multimedia based on multimedia video decoding and memory device functions. The former is the body's own storage space and can even be expanded, and can automatically decode audio and video to play audio and video files. The latter needs to work with other devices such as computers to project. From the application point of view, it can be divided into stand-alone applications and Embedded applications. The present invention is discussed in the context of a stand-alone application.

No matter which kind of pico projector, it can basically project about 50 inches, it can work independently for a long time, and because of its weight of only a few hundred grams, it is increasingly popular in home entertainment and business applications. However, existing pico projectors only provide a USB interface as a communication interface with other devices, and do not provide more types (especially wireless) interfaces, which imposes limitations on the use of pico projectors.

It can be seen that there is a need for a projector device that provides a richer interface. Summary of the invention

The present invention provides a pico projector that overcomes the above drawbacks.

According to a first aspect of the present invention, a pico projector is provided, comprising:

An interface component, configured to receive at least one of a video, a dynamic or a static file; a format processing component, configured to process a file received from the interface component into information suitable for display by the micro projector;

An optical projection imaging component and a display control component, the display control component projecting information processed by the format processing component by optically projecting the imaging component;

a main control unit for controlling cooperative operation between the interface component, the format processing component, the optical projection imaging component, and the screen display control component;

The interface component includes a wireless interface.

Preferably, the wireless interface is at least one of a Bluetooth, WiFi, infrared, DLNA (Digital Living Network Alliance) interface. Among them, Bluetooth can be HCI (Host Controller Interface), such as HHW-USB10, HHW-USB10-R, etc.

Preferably, the main control unit is a CPU.

Preferably, the main control component also controls audio, video, etc. files to be output to other playback devices via the interface component.

Preferably, the interface component further comprises a wired interface, such as a USB, TF card, Mini USB, HDMI, Mini VGA, AV in, AUDIO out interface. Optionally, the optical projection imaging component comprises a lighting component and a single or multi-chip digital light processor/liquid crystal onlaid LCoS chip. Preferably, the digital light processor is a digital micromirror device DMD chip, and the illumination component is a photodiode LED or a laser light source.

Optionally, the format processing component includes a chip that supports hard decoding, such as 1080p, 720p hard decoding, such as TELECHNIPS TCC (Telechips) 8900, TCC890 TCC8902 chip.

Optionally, the pico projector further includes an input and output device. Preferably, the input and output device comprises at least one of a speaker, a keyboard, a mouse, and a keypad.

Optionally, the interface component is disposed in an area of the pico projector that is closer to the micro projector housing (such as a side); preferably, the distance between the interface component and the side of the housing is 1 Projector within centimeters.

Optionally, an operation panel is disposed on the outer casing of the pico projector, and the interface component is disposed on a periphery of the main control key on the operation panel.

Optionally, the pico projector further includes a storage device. For example, the interface of an external storage device (such as external storage, hard disk, etc.), external storage device.

According to another aspect of the present invention, a method for a pico projector is provided, comprising: receiving at least one of a video, a dynamic or a static file via an interface component of the pico projector;

Processing the received file into information suitable for display by the pico projector;

The information processed by the format processing component is projected by the optical projection imaging component; wherein the interface component comprises a wireless interface.

Preferably, the wireless interface is at least one of a Bluetooth, a WiFi, and an infrared interface.

Preferably, the interface component further includes a wired interface, such as a USB, TF card, Mini USB, HDMI, Mini VGA, AV in, AUDIO out interface.

Optionally, the method includes controlling playback of the received file by an input and output device on the pico projector. Preferably, the input and output device is a speaker, a keyboard, a keypad, and the like.

Optionally, the optical projection imaging component comprises a lighting component, and a single or multi-chip digital light processor or a liquid crystal onlaid LCoS chip. According to another aspect of the present invention, there is provided an apparatus comprising a processor having stored thereon computer readable instructions for causing execution of the following operations by the processor:

Receiving at least one of a video, a dynamic or a static file via an interface component of the pico projector;

Projecting information processed by the format processing component by optical projection imaging component; wherein the interface component includes at least Bluetooth, WiFi, USB, TF card, Mini USB, HDMI, Mini VGA, AV in, AUDIO out interface One.

According to another aspect of the present invention, there is provided a computer readable storage medium having stored thereon program instructions in accordance with the method of the present invention. DRAWINGS

The above-described features, advantages, and other features and advantages of the present invention will become apparent to those skilled in the < The drawings show only exemplary embodiments that schematically illustrate the connection between the various components and should not be construed as limiting the invention. among them,

1 is a structural view exemplarily showing a pico projector according to an embodiment of the present invention; FIG. 2 is a view exemplarily showing communication between a pico projector and a portable device according to an embodiment of the present invention;

FIG. 3 is a flow chart exemplarily illustrating a method in accordance with one embodiment of the present invention. detailed description

The solution of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a structural diagram exemplarily showing a pico projector according to an embodiment of the present invention. As shown in FIG. 1, the pico projector includes an interface component for receiving various files that can be recognized and displayed by the pico projector, including but not limited to various audio, video, dynamic or static files, such as divx, xvid. , avi, mp4, mov, wmv, ape, wma, flv, mp3, da" vob, jpeg, gif, bmp, rmvb, 3gp, rm, 1080p, NTSC, pal, 1024 x 768, 800 x 600, 640 x 480 XGA, SVGA, VGA, VESA, PC, Macintosh and other formats for audio, video, image files, PPT slides, PDF, WORD, EXCEL documents and more. The interface component is preferably a wireless interface, and may be one or more of, for example, Bluetooth, WiFi, and infrared. Optionally, the interface component may further include a wired interface such as USB, TF, Mini USB, HDMI, Mini VGA, AV in, AUDIO out. In addition, the interface component can also be connected to a power line to supply power to the projector.

As shown in Figure 1, the format processing component is operative to process the file received from the interface component into information suitable for display by the pico projector, such as converting a file in jpg format to a BMP format. Among them, hard decoding technology is preferably employed to support 1080P full HD video. Of course, soft decoding using the CPU is also possible. Then, the display control unit projects the information processed by the format processing unit through the optical projection imaging unit, for example, according to the information characteristics to be projected, such as the image size, and the like, and performs display at an optimum size. Here, the display control component may be activated based on a user's instruction or may be automatically triggered after the format processing component generates the processed information. Wherein, in addition to the illumination assembly, the optical projection imaging component may further comprise a single or multiple digital light processor or a liquid crystal LCoS chip. The digital light processor is a DMD chip, and the lighting assembly is an LED or a laser source. In addition, the pico projector according to the present invention further includes a main control unit such as one or more central processing unit CPUs (such as ARM processors) carried on the main board for controlling interface components, format processing components, and optical projection imaging. The component and the screen display the coordinated operation between the control components. In addition, as shown in FIG. 1, the pico projector may have a built-in or external power source, for example, a rechargeable ion battery (3.7V, 2000 mAh). Specifically, the optical projection imaging unit may adopt one or more of the following configurations. Or all of them: WVGA ( 854 480 ) resolution, brightness of 35 lumens, contrast ratio of 1200: 1, LED (RGB) light source with a lamp life of up to 20,000 hours, projection ratio of 2.2: 1 (distance / width) ), the projection distance is 10" to 126", the image size is 5" to 66" (16: 9, measured ratio), the display ratio is 16:9 (compatible with 4: 3), the display color is 100% NTSC color .

For another example, the memory of the pico projector can be 600MHz or 256M. Its memory can be a built-in 128M, or an external 16GB micro SD card. Its speaker can be a 1W speaker. The wireless Bluetooth interface can be the 2.1 interface (EDR). Its input and output interface can be DC input, (such as 3.5mm) AV or audio input, mini VGA or USB or SD slot input. Optionally, such a miniature projector housing is equipped with a power cord, a 15 watt power adapter, a mini USB, a VGA cable, an A/V cable, a tripod, and the like. Such pico projectors can be up to 127 x 71 x l8 (millimeters).

Those skilled in the art will appreciate that the various components of the pico projector described above can be implemented by selecting any existing, currently in development, future generation hardware technology, device suitable for the particular application environment and needs.

Optionally, the pico projector may further comprise a heat sink member, such as a fan or an ultra-small silent fan. Optionally, the pico projector may further include a volatile memory, a non-volatile memory, a removable external storage device, and the like.

It will be appreciated that the main control component of the present invention can also control the output of audio, video, etc. files to other playback devices via the interface component.

The pico projector according to the present invention can play voice information through other devices operatively in communication therewith, such as a computer, a cell phone, a personal digital assistant, and the like. Alternatively/optionally, it is also possible to bring a speaker or the like to play various files independently. Preferably, it can also reserve an audio interface to provide better sound. Alternatively, it may include other various suitable input and output devices such as a keyboard, a soft/hard keypad, a main function key having a control direction, a selection function, and the like. Preferably, the interface component is located on or around the keyboard, keypad, main function keys, or on the side of the projector housing. For example, the projector provides a video player user interface that provides pause/continue, fast forward, rewind, volume adjustment, etc. on the touch screen or on the keyboard. Preferably, the user interface is automatically hidden in full screen mode.

2 is a diagram exemplarily showing communication between a pico projector and a portable device in accordance with one embodiment of the present invention. In this embodiment, the portable device is a PDA, the operating system running thereon is, for example, version 4.6.0 or 5.0.0, and the pico projector according to the present invention is provided with a Bluetooth interface, both of which communicate via a Bluetooth interface. Among them, the PDA includes a corresponding application in addition to the Bluetooth interface, thereby controlling communication between the two. Alternatively, a pairing password can be set between the two to improve security. Here, WinCE6.0 runs on the pico projector operating system. Of course, those skilled in the art will appreciate that the operating system shown herein is merely exemplary and that any suitable operating system is available for the devices shown.

It should be noted that Figure 2 is merely an example enumerated for illustrative purposes. It will be readily understood by those skilled in the art that the interface component configured on the pico projector of the present invention can communicate with any mobile device, fixed device, portable device having a corresponding interface, including but not limited to a mobile phone, a station, a unit, and a device. , television, multimedia computer, multimedia board, internet node, communicator, desktop computer, computer, laptop, personal digital assistant (PDA:), digital camera, digital video camera, MP3, MP4 or any combination thereof The stored file is displayed for projection.

FIG. 3 is a flow chart exemplarily illustrating a method in accordance with one embodiment of the present invention. The method includes, at step 301, receiving a file via an interface component of the pico projector. At step 302, the received file is processed into information suitable for display by the pico projector. At step 303, information processed by the format processing component is projected and displayed by the optical projection imaging component.

Moreover, for the pico-projector described above with respect to the present invention, those skilled in the art will readily appreciate that any suitable method steps can be utilized to implement, control, and operate the interfaces, devices, and the like that are included. Moreover, it will be apparent to the skilled person that the inverse module in the schematic block diagram and the flowchart presented in the above description may be implemented in whole or at least in part by electronic hardware, computer software and/or firmware, depending on the logic module, The functionality of the flowchart steps, as well as the design constraints that are imposed by hardware or software to the extent to which the various devices, logic modules, and flowchart steps are imposed. The presented logic modules and flow chart steps can be implemented, for example, with one or more digital signal processors, application specific integrated circuits, field programmable gate arrays, or other programmable devices. The computer software can be stored in a variety of storage media of the electrical, magnetic, electromagnetic or optical type and can be read and executed by a processor such as a microprocessor. To this end, the processor and the storage medium may be coupled to interchange information, or the storage medium may be included in the processor. The invention has been described above by means of exemplary embodiments. It should be noted that various alternatives, modifications, alternatives, combinations, and the like may be made by those skilled in the art without departing from the spirit of the invention and the scope of the appended claims Inside.

Claims

Claim

1. A pico projector comprising:

The interface component is one or more wireless interfaces.

The pico projector according to claim 1, wherein the wireless interface is Bluetooth, such as HHW-USB10, HHW-USB10-R; and/or the main control unit is a CPU; and/or the optical The projection imaging component comprises a lighting component and a single or multi-chip digital light processor/liquid crystal onlaid LCoS chip; preferably, the digital light processor is a digital micromirror device DMD chip, the illumination component photodiode LED or laser light source And/or the wireless interface is at least one of Bluetooth, WiFi, infrared, DLNA.

The pico projector according to claim 1, wherein the format processing component is a chip supporting hard decoding, such as 1080p, 720p hard decoding, TCC8900, TCC890K TCC8902 chip; the interface component further includes one or more The wired interface is preferably at least one of a USB, TF, Mini USB, HDMI, Mini VGA, AV in, AUDIO out interface.

The pico projector according to any one of claims 1 to 3, further comprising an input/output device; preferably, the input and output device comprises a speaker, a keyboard, a keypad, a storage device, a mouse, At least one of an interface of an external storage device (such as an external memory, a hard disk, etc.), an external storage device, a volatile memory, and a non-volatile memory.

The pico projector according to any one of claims 1 to 3, wherein the interface member is disposed in the pico projector and is closer to a side of the pico projector housing Preferably, the interface member is within 1 cm of the side of the housing; and/or the housing of the pico projector is provided with an operation panel, and the interface member is disposed on the operation panel The upper main control key is peripheral; and/or the main control unit controls audio, video, and the like to be output to other playback devices via the interface unit.

6. A method for a pico projector, comprising:

7. The method of claim 6, wherein the wireless interface is at least one of a Bluetooth, WiFi, infrared, DLNA interface; and/or the method further comprises passing an input and output device on the pico projector Controlling playback of the received file; and/or the main control component controlling audio, video, etc. to be output to other playback devices via the interface component; preferably, the input and output device is a speaker, Jt, mouse, keypad, etc. And/or the interface component further includes a wired interface, such as a USB, TF card, Mini USB, HDMI, Mini VGA, AV in, AUDIO out interface; and/or the optical projection imaging component includes a lighting component, and a single piece Or multiple digital light processors or 3⁄4 LCD LCoS chips.

8. An apparatus comprising a processor having stored thereon computer readable instructions for causing execution of the following operations by the processor:

The information processed by the format processing component is projected by the optical projection imaging component; wherein the interface component comprises a wireless interface, preferably a Bluetooth, WiFi, DLNA interface, preferably further comprising a USB, a TF card, a Mini USB, an HDMI At least one of wired interfaces such as Mini VGA, AV in, and AUDIO out.

9. An apparatus comprising means for performing the method steps according to claim 6 or 7. Device.

10. Apparatus according to claim 9, said apparatus being implemented by a computer program, preferably said computing sequence being stored on a computer readable shield.