CN107153444B

CN107153444B - A kind of intelligent terminal and its method for displaying projection

Info

Publication number: CN107153444B
Application number: CN201610117786.4A
Authority: CN
Inventors: 李亚锐
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-02
Filing date: 2016-03-02
Publication date: 2019-11-12
Anticipated expiration: 2036-03-02
Also published as: CN107153444A

Abstract

The embodiment of the invention discloses a kind of intelligent terminals, it include: projection lens, projection screen, handheld terminal, the handheld terminal includes display screen and handheld terminal main body, the display screen is installed in the handheld terminal main body, the projection lens and the display screen are generally aligned in the same plane or the back side or side, the projection screen is connected with handheld terminal, and can be in open or close state with the display screen.The intelligent terminal solves the problems, such as to convert between current tablet computer and laptop slack, in the case where not increasing size, remain the succinct convenient feature of tablet computer (or flat board mobile phone), the demand for needing to efficiently input text has been taken into account again, it can also be interacted with handheld terminal display screen, and the display effect of 3D can be realized in different forms, it can be used as the platform of virtual reality.

Description

Intelligent terminal and projection display method thereof

Technical Field

The invention relates to the technical field of terminals, in particular to an intelligent terminal and a projection display method thereof.

Background

The notebook computer and the tablet computer have advantages and disadvantages, the efficiency of the computer is improved by processing a large amount of information before sitting on a writing desk, and the tablet computer is more convenient and fashionable when people see entertainment or simple public affairs in a subway or an airport. The existing proposal is to make the display of the computer into a tablet computer, and the display and the keyboard are detachable. The problem that arises is that when a conventional keyboard is used, the keyboard is bulky and inconvenient to carry. When a light and thin keyboard is adopted, the keyboard supporting the tablet personal computer has the problem of heavy weight and light weight. In addition, the light and thin keyboard has a certain thickness, and is difficult to be attached to the tablet computer, so that the tablet computer with the keyboard is slightly clumsy in mobile environments such as subways, and the fashion sense of the tablet computer is reduced. Therefore, the search for better integration between notebook and tablet computers is a constant search in the industry. From a market perspective, the computer market is very competitive, but new competitors are entering the market, and the market competition is unprecedented and is strong due to the homogenization of products.

In recent years, projection technology is continuously developed, and the volume of the miniature projector is set to be the size of a cigarette box, the optimal projection distance is 1.5-5 meters, and the projection area is 60-300 inches. On the other hand, short focus home projectors have also been developed to achieve a projected area of 100 inches at a distance of about 40 cm. Typically the curtain is much larger than the projector and so the product kit provides a tripod and spindle hanging curtain, which is separate from the projector.

On the other hand, various terminal devices, especially mobile terminal devices, currently employ liquid crystal panels as displays, such as tablet computers, notebooks, and mobile phones. The common feature of these products is that the high efficiency with physical keyboard and the portability without physical keyboard are always a difficult contradiction to solve, and taking a tablet computer as an example, the best solution at present is to make the display and the keyboard of a notebook computer into a detachable type, and make the display into a tablet computer which can be used alone. Therefore, a battery, a CPU, an internal memory, a heat dissipation and an interface which are originally arranged in the keyboard are integrated into the display to generate a required product, namely a tablet personal computer, and the keyboard becomes light and thin due to load reduction. The design aims to achieve the aim that the new problem caused by matching of a tablet personal computer and a keyboard is light weight, in addition, the keyboard with the thickness of 5mm is matched with the tablet personal computer with the thickness of 7 mm, and the overall thickness exceeds 14 mm due to the gap, so that the tablet personal computer still has the feeling of being bulky and inconvenient.

The inventors have attempted to solve the above-mentioned problems in the course of implementing the present invention and have presented a new solution.

Disclosure of Invention

The invention provides an intelligent terminal, which integrates a projection lens and a projection screen into a handheld terminal, and greatly improves user experience under the condition of not increasing much volume and cost.

An embodiment of the present invention provides an intelligent terminal, including: the handheld terminal comprises a display screen and a handheld terminal body, the display screen is installed on the handheld terminal body, the projection lens and the display screen are located on the same plane or the projection lens is located on the back of the display screen or the projection lens is located on the side face of the handheld terminal, and the projection screen is connected with the handheld terminal.

Optionally, the projection screen may be configured to present content that the handheld terminal needs to present, and/or the projection screen may implement dual-screen interaction with a display screen of the handheld terminal, and/or a coating of the projection screen presents images of the projection lens to both eyes of a user, and/or a coating of the projection screen reflects images of the projection lens to left and right eyes of the user, respectively, and at this time, the display screen may be switched to a touch input state.

Optionally, the projection lens is mounted near a frame of the display screen.

Optionally, the projection screen is a flat rigid housing and/or the projection screen is stiffened by a peripheral flange; and/or the front or the back of the projection screen and the display screen of the handheld terminal can be in an open or closed state; and/or when the projection screen is closed, the edge of the projection screen is half wrapped on the display screen and/or the back of the handheld terminal, and/or the middle of the projection screen is tilted so as to open the projection screen; and/or the projection screen is used as a support of the handheld terminal after being rotated and opened; and/or, calibrating the projection area of the projection screen with white.

Optionally, the projection screen is connected with the side edge of the handheld terminal through a magnetic attraction connection and/or a plug, and/or the projection screen is switched between covering the display screen of the handheld terminal and covering the back of the handheld terminal by exchanging the left position and the right position of the projection screen; and/or, the plug device is used as a rotating shaft, and the rotating is 180 degrees, so that the projection screen is switched between covering the display screen of the handheld terminal or covering the back of the handheld terminal; and/or the magnetic attraction is provided with a rotating shaft connected with the projection screen; and/or the magnetic attraction rotating shaft is provided with a damping mechanism and/or a discrete clamp spring, and positioning information is provided when the projection screen rotates; and/or the projection lens adjusts the pitch angle of the projection lens according to the rotation information of the projection screen; the projection screen is connected with the connecting rod through the rotating shaft, the connecting rod is connected with a sliding groove in the side edge of the handheld terminal through a clamping bolt, and the clamping bolt can be inserted and pulled out; and/or, arranging a video chat camera on the projection screen; and/or when the projection screen covers the handheld terminal, the projection screen and the handheld terminal are more attached by utilizing magnetic attraction; and/or the projection screen is made of a semitransparent material or a reflecting mirror surface or a transparent (semitransparent) material with a reflecting coating; and/or the projection screen is made of an electrically-controlled variable glass material; and/or, the projection screen is provided with a hole to avoid a button, a lens, a microphone, a receiver, a jack and a slot on the handheld terminal, and/or the screen is provided with an electromagnetic induction coil to wirelessly charge the handheld terminal.

Optionally, the projection lenses are installed near two short borders of the display screen, and one or more projection lenses are installed to generate a 3D stereoscopic image.

Optionally, a fine optical cylindrical lens or a reflecting surface or a grating is mounted on the projection screen, so that light rays of the left and right projection lenses are projected to left and right eyes of a person respectively to form naked eye 3D; and/or when the projection screen is closed to the handheld terminal display screen, the optical cylindrical lens or the optical grating can respectively project the 3D images of the handheld terminal display screen to the left eye and the right eye of a user to form naked eye 3D.

Optionally, the projection lens is opened through an embedded flip cover of the handheld terminal or a projection distance is obtained through rotation of a section of swing arm.

Optionally, the projection screen can still be normally magnetically attracted and/or plugged with the handheld terminal after being exchanged left and right.

Optionally, the handheld terminal has a sensor for sensing opening and closing of the projection screen.

Optionally, the projection lens is recessed in the handheld terminal body, and the surface is covered with glass.

Optionally, the handheld device is equipped with at least two cameras, so that pictures or videos taken by the handheld device can be presented in a 3D form.

Optionally, the at least two cameras are respectively installed on a narrow side or a wide side of the handheld device, and the two cameras are parallel cameras, and the parallel cameras are used for shooting files and storing the files substantially independently; and/or the distance between the centers of the double lenses is more than 25mm and less than 70 mm; and/or each shooting lens is provided with a separate recording/flash lamp; and/or, the recording/flash lamp is in the middle of the photographic lens; and/or, a broadside dual speaker is provided.

Optionally, the projection screen is used to support the handheld terminal, so that the handheld terminal becomes an angle-adjustable projector, and the projection screen of the angle-adjustable projector is an external projection screen.

Optionally, the projection screen has a keyboard function simultaneously in any one of the following manners:

one side of the projection screen is used as the projection screen, the other side of the projection screen is an ultrathin keyboard, and the projection screen and the keyboard are switched by magnetic attraction plugging and unplugging of the projection screen which is exchanged left and right; or,

a sensing plate is arranged on the projection screen and can sense the touch of a user; or,

the keyboard is projected on the projection screen through the projection lens, when a user presses the keyboard, projection letters on the keyboard can be shielded, the letters are reflected to the collection lens, and the keyboard pressed on can be known through image recognition and algorithm evaluation; or,

an ultra-thin touch screen is adopted.

Optionally, the handheld terminal includes a tablet computer, a tablet smart phone, a portable computer, an intelligent game terminal, or an intelligent audio/video player.

The embodiment of the invention also provides a projection display method applied to any one of the intelligent terminals, which comprises the following steps:

the projection lens projects the content to be presented by the handheld terminal to a projection screen,

and the projection screen presents the content to be presented by the handheld terminal.

According to the embodiment of the invention, the projection lens and the projection screen are integrated on the handheld terminal, so that the user experience is greatly improved under the condition that the volume and the cost are not increased much. .

Drawings

FIG. 1 is a schematic diagram illustrating a connection between a tablet computer, a projection lens and a projection screen according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a keyboard, a projection lens, and a projection screen according to an embodiment of the present invention;

fig. 3a and 3b are schematic views illustrating a connection between a projection screen and a tablet computer according to an embodiment of the invention;

FIG. 4 is a schematic diagram of a desktop computer and a projection lens assembly according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a terminal device equipped with multiple cameras according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a terminal device serving as a projector according to an embodiment of the invention;

FIG. 7 is a schematic diagram of a projection screen with keyboard functions according to an embodiment of the invention;

FIG. 8 is a schematic diagram illustrating the association between a projection screen and a display screen of a handheld terminal according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a tablet computer, a projection lens and a projection screen according to another embodiment of the invention.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It should be noted that the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of brevity and description of the embodiments.

As used herein, the term "and/or" includes any combination of one or more of the associated listed items.

The starting point of the invention is that a projection lens and a projection screen (projection screen for short) are arranged on a tablet personal computer. A typical application is that the touch screen of a tablet computer becomes the input keyboard (or input component) and the projection screen becomes the display. Because the tablet computer is heavier and the projection screen is thinner and lighter, the center of gravity is stable and the thickness is increased by less than one millimeter. The invention provides an example that the projection lens is arranged on the front surface (touch screen surface) or the back surface of a tablet personal computer (mobile phone), and the projection screen is a rigid flat plate and is arranged on the side edge of the tablet personal computer. Through the design of multiple projection lenses and multiple cameras, a common tablet personal computer can also become a 3D display terminal and a shooting terminal, and a new broad field is expanded for the tablet personal computer (mobile phone). Similar to the case that the display screen of the tablet computer is still used as the display, and the projection screen is used as the input board by technical means, the invention is a compromise or derivative function of the scheme of the invention. The invention is explained by taking a tablet personal computer as an example, but can be popularized to similar products such as tablet mobile phones and even desktop computers.

In an embodiment of the present invention, an intelligent terminal includes: the handheld terminal comprises a display screen and a handheld terminal body, the display screen is installed on the handheld terminal body, the projection lens and the display screen are located on the same plane or the projection lens is located on the back of the display screen or the projection lens is located on the side face of the handheld terminal, and the projection screen is connected with the handheld terminal.

In the embodiment of the invention, the projection screen can be used for presenting contents required to be presented by the handheld terminal, and/or the projection screen can realize double-screen interaction with a display screen of the handheld terminal, and/or the coating film of the projection screen presents images of the projection lens to both eyes of a user, and/or the coating film of the projection screen reflects the images of the projection lens to the left eye and the right eye of the user respectively, so as to form naked eye 3D, and at the moment, the display screen can be switched to a touch input state.

In the embodiment of the invention, the projection lens is installed near the frame of the display screen.

In embodiments of the invention, the projection screen is a flat rigid housing, and/or the rigidity of the projection screen is enhanced by a peripheral flange; and/or the front or the back of the projection screen and the display screen of the handheld terminal can be in an open or closed state; and/or when the projection screen is closed, the edge of the projection screen is half wrapped on the display screen and/or the back of the handheld terminal, and/or the middle of the projection screen is tilted so as to open the projection screen; and/or the projection screen is used as a support of the handheld terminal after being rotated and opened; and/or, calibrating the projection area of the projection screen with white.

In the embodiment of the invention, the projection screen is connected with the side edge of the handheld terminal through a magnetic attraction connector and/or a plug, and/or the projection screen is switched between covering the display screen of the handheld terminal and covering the back of the handheld terminal by exchanging the left position and the right position of the projection screen; and/or, the plug device is used as a rotating shaft, and the rotating is 180 degrees, so that the projection screen is switched between covering the display screen of the handheld terminal or covering the back of the handheld terminal; and/or the magnetic attraction is provided with a rotating shaft connected with the projection screen; and/or the magnetic attraction rotating shaft is provided with a damping mechanism and/or a discrete clamp spring, and positioning information is provided when the projection screen rotates; and/or the projection lens adjusts the pitch angle of the projection lens according to the rotation information of the projection screen; and/or the projection screen is connected with the connecting rod through a rotating shaft, the connecting rod is connected with a sliding groove on the side edge of the handheld terminal through a clamping bolt, and the clamping bolt can be inserted and pulled out; and/or, arranging a video chat camera on the projection screen; and/or when the projection screen covers the handheld terminal, the projection screen and the handheld terminal are more attached by utilizing magnetic attraction; and/or the projection screen is made of a semitransparent material or a reflecting mirror surface or a transparent (semitransparent) material with a reflecting coating; and/or the projection screen is made of an electrically-controlled variable glass material; and/or, the projection screen is provided with a hole to avoid a button, a lens, a microphone, a receiver, a jack and a slot on the handheld terminal, and/or the screen is provided with an electromagnetic induction coil to wirelessly charge the handheld terminal.

In the embodiment of the invention, the projection lenses are arranged near two short frames of the display screen, and one or more projection lenses are arranged to generate a 3D stereoscopic image.

In the embodiment of the invention, a fine optical cylindrical lens or a reflecting surface or a grating is arranged on the projection screen, so that the light rays of the left projection lens and the right projection lens are respectively projected to left eyes and right eyes of a person to form naked eye 3D; and/or when the projection screen is closed to the handheld terminal display screen, the optical cylindrical lens or the optical grating can respectively project the 3D images of the handheld terminal display screen to the left eye and the right eye of a user to form naked eye 3D.

In the embodiment of the invention, the projection lens is opened through an embedded flip cover of the handheld terminal or the projection distance is obtained through the rotation of a section of spiral arm.

In the embodiment of the invention, the projection screen can still be normally magnetically attracted and/or plugged with the handheld terminal after being exchanged left and right.

In the embodiment of the invention, the handheld terminal is provided with the sensor for sensing the opening and closing of the projection screen.

In the embodiment of the invention, the projection lens is embedded in the handheld terminal body, and the surface of the projection lens is covered with glass.

In the embodiment of the invention, the handheld device is provided with at least two cameras, so that pictures or videos shot by the handheld device can be presented in a 3D form.

In the embodiment of the invention, the at least two cameras are respectively arranged on the narrow side or the wide side of the handheld device, the two cameras are parallel cameras, and the files shot by the parallel cameras are stored independently; and/or the distance between the centers of the double lenses is more than 25mm and less than 70 mm; and/or each shooting lens is provided with a separate recording/flash lamp; and/or, the recording/flash lamp is in the middle of the photographic lens; and/or, a broadside dual speaker is provided.

In an embodiment of the present invention, the projection screen is used for supporting the handheld terminal, so that the handheld terminal becomes an angle-adjustable projector, and a projection screen of the angle-adjustable projector is an external projection screen.

In the embodiment of the invention, the projection screen has a keyboard function simultaneously in any one of the following modes:

an ultra-thin touch screen is adopted.

In the embodiment of the invention, the handheld terminal comprises a tablet personal computer, a tablet smart phone, a portable computer, an intelligent game terminal or an intelligent audio/video player.

The following takes a tablet computer as an example, and the embodiments of the present invention are further described with reference to the drawings.

Fig. 1 is a schematic diagram of a connection between a tablet computer 1, a projection lens 3, and a projection screen 2 according to an embodiment of the present invention, where upper and lower narrow sides 101 and 102 of the tablet computer are provided, and a display screen of the tablet computer faces upward (the display screen may face downward, see fig. 2). The projection screen 2 is typically a flat panel that is attached to the side of the tablet computer, typically to the broad side of the tablet computer. One or more projection lenses may be provided, for example, projection lenses 301 or 303 are installed on the upper and lower narrow sides of the tablet computer, and image information is displayed on the projection screen 2 by using the projection lenses, and the display screen of the tablet computer can be used as a keyboard or game keys. The projection screen 211 may optionally be white.

With the projection lenses 301 and/or 303, it is also possible to form a 3D (three-dimensional) video, for example, using polarized glasses so that the images of the lenses 302 and 301 are received by the left and right eyes of a person, respectively, forming a 3D video. For another example, the left and right projection lenses project images onto the projection screen in a time-sharing manner, and the 3D image is formed by opening and closing the glasses. For another example, a projection lens is used to project the images seen by the left and right eyes crosswise. For another example, vertical lenticular lens glass 211 is disposed on the projection screen, so that the left and right images enter different eyes of the person, respectively, to form naked-eye 3D. For another example, the projection screen is made of a translucent material so that other people can see the content on the projection screen, or the projection screen is a reflective mirror surface and can reflect the image of the projection lens to the glasses of the user to achieve the effects of amplification, 3D and the like, or the projection screen is transparent (or translucent) and is provided with a local coating 2112 which can reflect the image to the user, for example, the images of the left and right projection lenses are reflected to the left and right eyes of the user through the local coating 2112 to form naked eye 3D images, so that the user can see the actual environment without wearing glasses and can see the virtual 3D image. Another advantage of the transparent (or translucent) screen with a coating is that when the projection screen covers the display screen of the tablet computer, the user can also see the contents of the display screen and can touch the input, similar to a mobile phone sticker. Or the projection screen is made of a similar electric control glass material and can be switched among transparent, white, black and the like. By the invention, the tablet computer can become a terminal of Virtual Reality (VR) or Augmented Reality (AR).

Obviously, the projection screen can be made into a flat plate shape, and the size of the projection screen is equivalent to, slightly larger than or slightly smaller than that of the tablet computer, so that the projection screen can cover the display screen of the tablet computer and can be turned to the back of the tablet computer. In order to provide the projection screen 2 with greater strength, one method is to fold the edge 202 of the projection screen 2 where it is stressed, with a raised middle portion 201 to facilitate opening. The edge folds can also block a portion of the projected light. When the projection screen is closed, the hole 214 on the projection screen avoids the lens, the keys (such as home key and volume key), the receiver, the microphone, the jack, the card slot and other components of the tablet computer. The magnet 103a on the tablet computer and the magnet 212 on the projection screen can attract each other. There are other conventional designs such as slightly raised dots (not shown) on the sides of the tablet computer against the projection screen lip 202.

A method for combining a projection screen with a tablet personal computer is to adopt a mode of a side magnetic attraction 222 plug connector 223 and adopt a symmetrical design, namely the projection screen is pulled out and can still be magnetically attracted with the tablet personal computer after being rotated by 180 degrees. Through the form of pulling out, rotating 180 degrees, reinserting, solved projection screen can both cover the panel computer display screen, can cover the problem behind the panel computer again in laminating. The projection screen can be plugged into a tablet computer to take power, and electric signals are guided to other places, for example, the electric signals are guided to the lens 213, by means of thin film wires and the like.

Obviously, it is the core of the present invention to combine a tablet personal computer (tablet phone), a projection lens and a self-contained projection screen, and it is the solution of the present invention to use the tablet personal computer to provide a support and a proper tilt angle for the projection screen to match with the projection lens, and it is the key point of the present invention to use the tablet personal computer display screen and the projection screen to present interaction (i.e., in this scenario, the tablet personal computer can be laid flat on a desk as an input end or a control end, the projection screen is a face facing to a person, and a user can conveniently operate the tablet personal computer touch screen when watching the projection screen, even the handheld terminal and the projection lens present in the eyes of the user at the same time of the image of the projection screen). Therefore, the projection lens is not required to be arranged on the front surface and the back surface of the tablet personal computer, and only needs to be arranged on the tablet personal computer; the projection screen is not necessarily linked with the side of the tablet computer, but is necessarily linked with the tablet computer, otherwise the projection screen loses the support and the reference object, and the relative position relationship/angle relationship among the projection screen, the projection lens and the touch screen cannot be conveniently, accurately and stably ensured. In addition, the conciseness and portability are souls of tablet computers and mobile phones, so that the following requirements are also met as much as possible: 1) the portable screen of panel computer, 2) still remain when closing the lid to the panel computer portability of panel computer, 3) both can open the projection screen towards handheld terminal display screen, can accomodate behind the panel computer compactly again in order to do benefit to and carry along with the panel computer and do not influence the conventional portable use of panel computer. While the foregoing has shown an embodiment that meets the above stated needs, another embodiment is shown in FIG. 9.

The projection lens 3 is placed in the groove, the surface is covered with the transparent glass 100, and rays such as 311 are projected.

Fig. 2 is a schematic diagram of the connection between the keyboard 11, the projection lens 302 and the projection screen 2 according to the embodiment of the present invention. By keyboard 11, it is meant the front surface of the keyboard, and may also be generally referred to as the back surface of a tablet computer, or the surface of a projector. The projection lens selects the left, middle, and right different positions 301/302/303, respectively, typically the middle or both. The keypad is provided with keys 111. The projection screen 2 is attached to the side of the keyboard. In order to protect the projection screen, the front and back sides of the projection screen are coated with soft materials, the middle of the projection screen is white, and the edges of the projection screen are coated with light absorbing materials 216.

Fig. 3 is a schematic view of a magnetic connection between a tablet computer and a projection screen according to the present invention. The projection screen 2 can be used as a support for the tablet computer 1 after being turned over and opened. The projection screen bend edge 202 can have increased strength compared to flat projection screens. Fig. 3a illustrates an imaginary turning of the projection screen, which is often required to be opened more than 270 °, i.e., θ 1>270 °, in order to support the tablet computer, which is difficult to achieve in practice. Meanwhile, when the projection screen needs to be turned over to the back of the tablet computer, the edge 202 of the projection screen cannot be attached to the back of the tablet computer. The projection screen is inserted into the tablet personal computer again after being exchanged left and right, the opening angle of the projection screen is smaller than 90 degrees, namely theta 2 is smaller than 90 degrees, and the edge 202 of the projection screen can be precisely attached to the tablet personal computer. The magnet 103b on the back of the tablet computer is attracted to the magnet 212 on the projection screen.

The projection screen is connected with the tablet computer 1 through the magnetic connector 221 and the plug connector 223. One projection screen configuration is a projection screen with a shaft 222 mounted on the magnetic attachment to provide a fixed connection for the projection screen. The rotating shaft 222 is provided with a sensor capable of sensing the rotation angle of the projection screen, and is provided with a clamp spring and a damping structure, so that when the projection screen rotates to the optimal projection angle, the rotating shaft obtains relatively large damping. The snap spring has various structures, has been widely applied to automobile doors, damping wrenches and the like for many years, and is not shown in the figure.

The projection screen is connected with the tablet computer 1 through the magnetic connector 221 and the plug connector 223. Another projection screen structure is to form a rotatable device with the plug connector 223, so that the projection screen can be turned over to cover the back of the tablet computer by rotating 180 degrees around the plug connector 223.

At present, the back of a mainstream tablet computer or a mobile phone adopts an all-metal shell, so that wireless charging is difficult to implement. As can be seen from fig. 3b, if the electromagnetic induction coil is installed on the projection screen, an electromagnetic induction signal can be obtained from the wireless charger, and the electromagnetic induction signal is rectified, filtered, converted into an induction current, and transmitted to the tablet pc through the plug connector 223 for charging; or, the electromagnetic induction signal on the projection screen is directly transmitted to the tablet computer through the plug-in connector 223, and the electromagnetic induction signal is rectified, filtered and converted into induction current in the tablet computer to charge the tablet computer.

FIG. 4 is a schematic diagram of a desktop computer, a projection lens and a projection screen. The rear of the desktop computer display is used as a projection screen 2, and the projection lens is designed to be hidden, one is to obtain the projection distance through a bottom flip 231 or a side flip 232, and the other is to obtain the projection distance in a rotating manner, for example, the projection lens 233 rotates around a rotating shaft 234. The desktop monitor can be flipped over by the vertical pivot 237 or the horizontal pivot 238. The projected area 20 is white.

Fig. 5 is a schematic diagram of a terminal device equipped with multiple shots, typically dual shots. Terminal device 1, projection screen 2, projection lens 301/302. For simple description, taking a mobile phone terminal as an example, a double-shot lens is arranged on the back of the mobile phone, such as a narrow-side parallel double-shot lens 301a/302a or a wide-side parallel double-shot lens 301b/302b, and the parameters of the two lenses are the same, and the two lenses are horizontally placed during shooting and can be independently stored in the mobile phone, or are combined into a file in a certain format so as to be convenient for copying and transferring, but the two files are actually two files. When displayed, the documents shot by the two lenses are respectively released through the two projection lenses 301/302 to achieve a 3D effect. At present, a mobile phone is provided with double lenses, but only one picture is output, and the invention outputs two shooting files which can be two images or two videos, and aims to realize 3D. The shooting file can be immediately sent to the projection lens to be displayed, and the field shooting effect can be presented. The problem of left-right matching of images shot and watched exists in the actual process, namely the left side and the right side of the 3D shot are consistent, and only different projection lenses need to be matched according to a 3D mode.

The lens distance of the current double-camera mobile phone is within 25mm, and the purpose is to generate a picture. And the distance between human eyes is between 45 and 65mm, in order to achieve better 3D effect, the maximum distance between the lenses of the invention is more than 25mm, usually less than 70mm, and a plurality of lenses with different distances (such as 3 lenses) can be compatible with micro-distance or long-distance 3D shooting.

On the other hand, in order to obtain a better live effect, a recording hole or a flash is provided for each lens, for example, recording/flash 321a/322/a/321b/322b is provided for each lens 301a/302a/301b/302b, or recording/flash 321c/321d is provided in the middle of the photographing lens. Multi-channel speakers 331/332 are provided on the wide or narrow sides of the phone (narrow side speakers not shown) to create a stereo effect when playing video.

Fig. 6 is a schematic diagram of the terminal device of the present invention serving as a projector, still taking the tablet pc 1 as an example, wherein the projection lens 3 is capable of projecting pictures or images to an external curtain 28. There are two ways, one is that the projection screen 2 is supported as a plane, for example, on a table, and the desired projection effect can be obtained by adjusting the angle θ 3. Another way is to open an angle θ 3, for example, θ 3 is 25 ° to 45 °, and use the projection screen 2 and the side edge of the tablet pc 1 to stand the terminal device of the present invention, and manually adjust the terminal device to obtain the desired projection effect. As previously mentioned, adding the flap 202 can increase the strength of the projection screen.

Fig. 6 also illustrates another support of the tablet computer according to the present invention, which is comfortable and convenient especially when the user uses the induction pen to input on the tablet computer. In order to ensure larger supporting force, damping springs can be added besides increasing damping of a rotating shaft of the projection screen and damping of the clamp springs.

Fig. 7 is a schematic diagram of a projection screen with keyboard functions, and the projection screen is combined with a tablet computer and a projection lens. The projection screen 2 has the characteristics of fig. 1 to fig. 6, such as symmetrical magnetic attraction plugging, a rotating shaft, a damping mechanism, a clamp spring mechanism, and plugging capable of turning 180 degrees. There are many different ways to realize the compatibility of the projection screen and the keyboard, and the formed keyboard can be selected on one side of the projection screen or on the back of the projection screen. The related method comprises the following steps:

1. one side of the projection screen is used as the projection screen, the other side of the projection screen is an ultrathin keyboard, and the projection screen and the keyboard are switched by magnetic attraction plugging and unplugging which are interchanged from left to right.

2. The projection screen is provided with an electric shock sensing board which can sense the touch of fingers, and the example of the sensing board is a handwriting board on an automobile.

3. The keyboard is projected on the projection screen through the projection lens 301/303 on the tablet personal computer, when a finger presses the keyboard, the letter projection 29 on the keyboard is blocked and reflected to the collection lens 401/403, and through image recognition and algorithm evaluation, which keyboard is pressed on can be known.

4. A touch screen is used. The disadvantage is the high cost and the relatively thick size of the touch screen.

Fig. 8 is a schematic diagram of the association of a projection screen with a display screen of a handheld terminal. It should be noted that, obviously, the projection screen may be made of a composite material, for example, the projection screen has a magnetic attraction corresponding to a tablet computer, the rotating shaft of the projection screen is made of a wear-resistant metal, the frame of the projection screen is made of a light metal or plastic or carbon fiber, and the middle of the projection screen is made of a metal, a plastic, a carbon fiber, glass, a display screen, a composite material, or the like. When the projection screen is closed to the screen of the handheld terminal, the optical cylindrical lens as shown in fig. 1 is arranged in the middle of the projection screen, and 3D images on the screen of the handheld terminal can be reflected to the left and right eyes of a user respectively to form naked eye 3D. The left and right 3D images of the display of the handheld terminal can be staggered with the cylindrical lens of the projection screen and even just reversed left and right, and the solution is that the 3D images of the handheld terminal can continuously move left and right by the width of at least one cylindrical lens.

The projection screen of fig. 8 is actually independent of the projection and is associated with the display screen of the handheld terminal. In fact, because the display of the current handheld terminal needs to add a touch screen function and 3D display, and it is difficult to add a lenticular lens, especially if the lenticular lens is required to be added when needed and removed when not needed, the technology cannot be done at present. Like this need, the present invention presents a solution to add a projection screen. For another example, when the projection screen is at an angle, for example, 45 °, with respect to the display of the handheld terminal, the projection screen (e.g., a transparent acrylic material with a certain thickness and a smooth surface) can reflect the image on the handheld terminal to the eyes of the user, thereby creating a special effect such as a 3D floating feeling. Of course, the projection screen can display the images of the projection lens and the handheld terminal simultaneously as described in fig. 1.

Fig. 9 is a schematic structural diagram of a tablet computer, a projection lens and a projection screen according to another embodiment of the present invention, where the handheld terminal-tablet computer 1, the projection screen 2 and the projection lens 3 are on the side of the tablet computer 1. A groove 272 is formed in the side edge of the tablet computer, and the linkage rod 271 is combined with the groove 272 through two clamping bolts 2741 and 2742, so that the linkage rod 271 slides by taking the groove as a guide groove. The projection screen 2 is connected with the tablet personal computer 1 through the linkage rod 271, the distance between the projection screen 2 and the projection lens 3 is adjusted through the sliding of the linkage rod 271 in the groove, and the elevation angle of the projection screen 2 and the projection lens 3 is adjusted through the rotating shaft 273. When the latch is removable, for example, the latch 274 is removable, the projection screen 2 can perfectly cover the front and back of the tablet pc 1. Obviously, it is also possible that the projection lens is located on both the upper and lower surfaces of the tablet pc in fig. 9 (see fig. 1, 2, 5, and 7).

The invention takes a tablet personal computer as an embodiment, and illustrates that a projection lens, the tablet personal computer and a projection screen are combined together, thereby providing a new scheme for combining a notebook computer and a keyboard.

For a micro projector, besides a projection lens, the micro projector also comprises components such as a CPU, a power supply, a USB port, a memory, even a battery and the like. According to the invention, the projection lens of the micro projector is integrated on the tablet personal computer, so that the resources of the tablet personal computer can be fully utilized, and related devices of the projector are saved, so that the volume and the cost of the tablet personal computer are not increased much after the projection lens is added.

The projection screen is attached to the tablet computer using the tablet computer as a support. In this case, the projection screen is typically a rigid panel and is conveniently molded to a shape that conforms to the surface of the tablet computer. Because the projection screen has a thickness less than one millimeter, the thickness of the notebook computer formed by the tablet computer and the projection screen is equivalent to that of the tablet computer. Through symmetrical engineering design, the front and back surfaces of the projection screen and the tablet computer can be attached to each other, so that the volume of the notebook or the tablet computer is very compact and concise.

Note that, in recent years, the flip phone is almost completely disappearing, the tablet phone has become an absolute trend, and the tablet pc is an enlarged tablet phone in nature and is also a new favorite in recent years. However, the notebook and the tablet personal computer have advantages and disadvantages, the notebook is suitable for working when sitting in front of an office desk, at the moment, the keyboard of the notebook is large, the distance between the keyboards is also large, therefore, the keyboard input speed is high, the display of the notebook is opposite to human eyes, the user can conveniently look at the screen by the human eyes, and the advantages enable the notebook to process a large number of transactions in the office environment and have high efficiency. But the notebook appears clumsy in a mobile environment. The tablet personal computer is suitable for reading and small amount of word processing in a mobile environment, for example, in a crowded subway and a narrow and bumpy airplane, a stable workbench is not available at the moment, one hand or two hands are required to hold the tablet personal computer, and how to combine the notebook computer with the tablet personal computer becomes an industrial problem and cannot be well solved. Similar situations also exist on the mobile phone, and because the mobile phone screen is small, errors are easy to occur when characters are input. It is not good to infinitely enlarge the screen and to design a mobile phone with a keyboard, for example, a 6 inch mobile phone is already large, but when text is needed, the screen and the keyboard are both 3 inches. A mobile phone with a keypad, such as motorola Milestone2, has a larger keypad and display screen obtained by adding a keypad, with the result that it is a serious problem of visual bloat. At present, the tablet personal computer and the tablet mobile phone develop towards ultra-thin, and the thickness of a mainstream product is only about 7 millimeters.

The invention aims at the mainstream display terminals such as a tablet personal computer and a tablet mobile phone, and has the following characteristics:

the projection lens is placed on the tablet personal computer and the tablet mobile phone for the first time, the projection is carried out on the projection screen, and the ultrathin hard-shell projection screen is combined, so that the thicknesses of the tablet personal computer and the tablet mobile phone are increased by less than 1 mm, and only a few tenths of millimeters are added to the thinnest thickness, and the thickness is equivalent to that of a mobile phone cover. In order to not increase the thicknesses of the tablet personal computer and the mobile phone additionally and simultaneously achieve the artistic appearance, the projection lens is embedded into the tablet personal computer and the mobile phone, and the surface of the projection lens is covered with glass, so that the attractive appearance and the delicacy of the existing mainstream products are still maintained.

And the edge of the projection screen is folded, so that the projection screen has both ultrathin property and hardness. For example, the use of titanium metal has greater strength, but is too expensive. Through the flanging treatment, the portable metal material or plastic similar to the metal shell of the mobile phone can be adopted, and the higher hardness can be achieved.

The touch screen of the tablet computer or the mobile phone is changed into the input keyboard for the first time, and the projection screen is used as the display, so that the tablet computer is converted into the notebook. On the basis, a multi-projection lens technology (or a single projection lens for time-sharing display of a 3D image) and a double-lens technology on a tablet personal computer and a mobile phone are used for the first time to form a terminal capable of displaying and shooting a 3D video, and a Virtual Reality (VR) terminal product is provided.

Due to the limitation of a mechanical structure, the edge of the projection screen is bent, and the flat computer and the mobile phone screen are taken as input keys, the projection screen is difficult to turn 360 degrees to be attached to the front side and the back side of the flat computer and the front side and the back side of the mobile phone. The invention adopts the technical scheme of combining magnetic insertion and extraction with 180-degree left-right rotation, thereby better solving the problem. Because the opening angle of the projection screen must be matched with the projection lens, a damping rotating shaft is also arranged on the pluggable magnetic sucker, and a clamp spring is arranged for positioning. The light and thin projection screen ensures that the projection screen can be stably stopped at a required rotation angle only by small damping and clamp spring resistance.

Therefore, the invention completely solves the problem of connection between the tablet personal computer and the mobile phone and the projection lens and the ultrathin projection screen. The functions are realized at the cost that the thickness of the mobile phone cover is almost increased for the tablet personal computer and the mobile phone.

In order to promote and derive functions, such as the function of a projection screen and a keyboard, the invention realizes the function through 4 schemes. As another example, another derivative function is that the terminal of the present invention acts as a projector.

The embodiment of the invention also discloses a projection display method applied to the intelligent terminal, which comprises the following steps:

It should be noted that the description of the present invention and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and is not limited to the embodiments described in the present specification, which are provided as additional limitations to the present invention and to provide a more thorough understanding of the present disclosure. Modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims

1. An intelligent terminal comprises a handheld terminal body, the handheld terminal comprises a display screen and a handheld terminal body, the display screen is installed on the handheld terminal body, and the intelligent terminal is characterized by further comprising a projection screen, the projection screen is connected with the side edge of the handheld terminal body through a magnetic attraction and/or a plug and can be directly connected with or detached from the handheld terminal body, a rotating shaft is arranged on the magnetic attraction and connected with the projection screen, the rotating shaft is provided with a damping mechanism and/or a discrete clamp spring, and positioning information is provided when the projection screen rotates;

when the projection screen is connected with the handheld terminal, the projection screen can be used as a display of the handheld terminal, and when the projection screen is detached from the handheld terminal, the handheld terminal can independently work;

wherein:

(1) the handheld terminal is a tablet phone or a tablet computer, namely a turnover cover without fixed connection;

(2) the display screen of the handheld terminal is a touch screen;

(3) when the projection screen is connected with the handheld terminal, the touch screen can be used as a keyboard of the projection screen;

(4) when the projection screen is connected with the handheld terminal, the projection screen can obtain display data and a power supply from the handheld terminal and display the display data on the projection screen; or, the handheld terminal further comprises a projection lens, and the display content of the handheld terminal can be projected onto the projection screen.

2. The terminal of claim 1, wherein the image of the projection screen is capable of being presented in 3D to both eyes of the user to form naked eye 3D.

3. The terminal according to claim 1 or 2, wherein the projection screen and the front or back of the display screen of the handheld terminal can be opened or closed; and/or the projection screen is used as a support of the handheld terminal after being rotated and unfolded.

4. The terminal of claim 1 or 2, wherein the projection screen and the side of the handheld terminal are interchanged left and right by exchanging the projection screen, so that the projection screen is switched between covering the display screen of the handheld terminal or covering the back of the handheld terminal; and/or, the plug is used as a rotating shaft, the rotating is carried out for 180 degrees, so that the projection screen is switched between covering the display screen of the handheld terminal or covering the back of the handheld terminal; and/or the projection lens adjusts the pitch angle of the projection lens according to the rotation information of the projection screen; and/or the projection screen is connected with a connecting rod through a rotating shaft, the connecting rod is connected with a sliding groove on the side edge of the handheld terminal through a clamping bolt, and the clamping bolt can be inserted and pulled out; and/or, arranging a video chat camera on the projection screen; and/or when the projection screen covers the handheld terminal, the projection screen and the handheld terminal are more attached by utilizing magnetic attraction; and/or the projection screen is made of a semitransparent material or a reflecting mirror surface; and/or the projection screen is made of transparent material or semitransparent material with a reflective coating; and/or the projection screen is made of an electrically-controlled variable glass material; and/or, there is the hole on the projection screen, in order to avoid button, camera lens, microphone, earphone, jack and slot on the handheld terminal, and/or, install electromagnetic induction coil on the projection screen, do handheld terminal carries out wireless charging.

5. The terminal according to claim 1 or 2, wherein the projection screen is provided with a fine optical cylindrical lens or a reflecting surface or a grating, so that light rays on the projection screen are projected to left and right eyes of a person respectively to form naked eye 3D; and/or when the projection screen is closed to the handheld terminal display screen, the optical cylindrical lens or the optical grating can respectively project the 3D images of the handheld terminal display screen to the left eye and the right eye of a user to form naked eye 3D.

6. The terminal of claim 1, wherein the handheld terminal has a sensor for sensing whether the projection screen is connected to the handheld terminal.

7. The terminal according to claim 1, wherein the hand-held terminal is equipped with at least two cameras to take 3D images or videos and can present the taken images or videos in 3D on the projection screen.

8. The terminal of claim 7, wherein the 3D dual lens centers are spaced more than 25mm apart and less than 70mm apart.

9. The terminal of claim 1, wherein the projection screen is configured to support the handheld terminal when a projection lens is disposed on the handheld terminal, so that the handheld terminal becomes an angle-adjustable projector capable of projecting the content in the handheld terminal onto an external projection screen.