KR20100097400A - Mobile terminal - Google Patents

Abstract

PURPOSE: A portable terminal is provided to control projecting direction of incident light of a projector module by a refractive lens or reflector, thereby conveniently watching stored video of the portable terminal. CONSTITUTION: A portable terminal comprises a display unit(151), a projector module(155), body housing and projection angle control member(300). The projector module changes a video signal into the incident light. The projector module projects the incident light. The body housing accepts the display unit and the projector module. The projection angle control member changes projection angle of the incident light by bending or reflecting the projected projection angle.

Description

Portable Terminal {MOBILE TERMINAL}

The present invention relates to a portable terminal. More specifically, the present invention is a portable terminal having a projection function of the image by the projector module, in order to adjust the projection angle of the projection light provided from the projector module by refracting or reflecting the projection light using a refractive lens or a reflector The present invention relates to a portable terminal for adjusting the projection direction of projection light.

Terminals may be divided into mobile / portable terminals and stationary terminals according to their mobility. The portable terminal may be further classified into a handheld terminal and a vehicle mount terminal according to whether a user can directly carry it.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

Recently, portable terminals have absorbed the functions of independent multimedia devices, and their own areas have been diluted. Recently, a portable terminal can take various still images or dynamic images, and store the captured images in the portable terminal and display them on a display unit provided in the portable terminal. The image displayed on the display unit may be not only a photographed image but also a data or a broadcast screen received by wireless or wired. Recently, a portable terminal employing a projector module has been introduced as an output means of the portable terminal.

In general, the projection light projected from an output device such as a projector is projected onto a screen installed vertically to display an image. However, portable terminals are often flat and longer than their width. Its thickness is also accelerating thinning. Therefore, when the projector module is mounted inside the portable terminal, the projection light projected by the portable terminal may be configured to be projected in the lateral direction or the front-rear direction of the housing constituting the main body.

However, in the case where the projection light is projected in the lateral direction of the main body housing constituting the main body of the portable terminal, when the portable terminal is mounted on the table and projected the projection light, the projection light projected by the projector module is installed on the table or the like. Since it may interfere with the surface, the portable terminal should be mounted using a separate holder.

In addition, even if artificially adjusting the projection angle of the projection light projected from the projector, there is a need for a method that can solve this problem can occur because the distortion of the image formed on the screen or wall.

Therefore, the projection angle of the projection light provided by the projector module can be selectively changed, and when the projection angle of the projection light provided by the projector module is selectively adjusted, it is possible to eliminate the distortion of the image that may be generated by the adjustment of the projection angle. What is needed is a portable terminal.

An object of the present invention is to provide a portable terminal capable of adjusting a projection angle of projection light in a portable terminal having a projection function of an image by a projector module.

In addition, the present invention is to provide a method for solving problems such as chromatic aberration, inversion of the image or changing the ratio of the image generated in the projection light when the projection light is refracted or reflected to change the projection direction of the projection light. It is a task.

In order to solve the above problems, the present invention provides a display unit, a projector module for converting and projecting an image signal into projection light, a main body housing accommodating the display unit and the projector module, and refracting or projecting the projection light projected from the projector module. Provided is a portable terminal including a projection angle adjusting member which reflects and changes a projection angle of projection light.

The projection angle adjusting member may be a refractive lens mounted inside the main body housing or detachably mounted to the main body housing and refracting projection light.

In addition, when the refractive lens is mounted inside the main body housing, the refractive lens may be rotatably mounted between the projection lens of the projector module and the main body housing.

In this case, the refractive lens may have a rotation axis at one end thereof in a longitudinal direction, and the projection light may be selectively incident on the refractive lens by the rotation of the rotation axis, or the incident angle of the projection light incident on the refractive lens may be changed. .

Here, the rotating shaft is connected to the drive wheel, the drive wheel may be mounted so that a portion thereof is exposed to the outside of the main housing.

In addition, the rotation shaft may be driven by a drive motor provided in the body housing.

Here, the refractive lens may be provided inside the refractive apparatus housing that is selectively detachable to the body housing.

The rotating shaft may be connected to a driving wheel, and the driving wheel may be mounted to expose a portion of the driving wheel to the outside of the deflector housing.

In this case, the projection angle adjusting member may be a reflecting mirror mounted inside the main body housing or detachably mounted to the main body housing to reflect the projection light.

Here, when the reflector is mounted inside the main body housing, the reflector may be rotatably mounted between the projection lens of the projector module and the main body housing.

In addition, the reflector may be provided with a rotation axis at one end thereof in the longitudinal direction, and the projection light may be selectively reflected by the reflector by the rotation of the rotation axis, or the incident angle of the projection light incident on the reflector may be changed.

Here, one or two reflectors may be provided inside the reflector housing selectively detachable from the main body housing.

In addition, when two reflectors are provided, a driving wheel may be connected to one end of at least one of the reflectors to be connected to the rotating shaft and the rotating shaft, and a portion of the reflecting mirror may be exposed to the outside of the reflector housing.

In this case, the reflector housing may be provided with a mounting pipe having a circular pipe shape, and the main body housing may include a mounting groove into which the mounting protrusion is rotatably inserted.

Here, the front or rear of the main body housing may be provided with a projection made of a light-transmissive material to project the projection light reflected from the reflector.

And a controller for controlling the projector module and the display unit. When the projection light projected by the projector module is refracted or reflected, the controller may temporarily adjust the projector module to correct or correct image inversion or chromatic aberration. It is possible to control to convert an image signal by an image into projection light.

According to the portable terminal according to the present invention, by using the projector module provided in the portable terminal, it is possible to view by viewing the image stored in the portable terminal.

In addition, according to the portable terminal according to the present invention, in a portable terminal having a projection function of the image by the projector module, the projection light is refracted or reflected through the refractive lens or reflector 600 to adjust the projection angle of the image To adjust the projection direction of the projected image.

In addition, the present invention can solve the chromatic aberration, the ratio change of the image or the image reversal that may be generated when the projection light projected from the portable terminal is refracted or reflected.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Like numbers refer to like elements throughout.

1 is a block diagram of a portable terminal related to an embodiment of the present invention.

The portable terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, and an interface. The unit 170, the controller 180, and the power supply unit 190 may be included. The components shown in FIG. 1 are not essential, so a portable terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules that enable wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and a network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short range communication module 114, a location information module 115, and the like. have.

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 may include, for example, Digital Multimedia Broadcasting-Terrestrial (DMB-T), Digital Multimedia Broadcasting-Satellite (DMB-S), Media Forward Link Only (MediaFLO), and Digital Video Broadcast (DVB-H). Digital broadcast signals can be received using digital broadcasting systems such as Handheld and Integrated Services Digital Broadcast-Terrestrial (ISDB-T). Of course, the broadcast receiving module 111 may be configured to be suitable for not only the above-described digital broadcasting system but also other broadcasting systems.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives a wireless signal with at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data according to transmission and reception of a voice signal, a video call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access and may be built in or external to the portable terminal 100. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like. The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

The location information module 115 is a module for acquiring a location of a portable terminal, and a representative example thereof is a GPS (Global Position System) module.

Referring to FIG. 1, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera module 121 and a microphone 122. The camera module 121 processes image frames such as still images or moving images obtained by an image sensor in a video call mode or a photographing mode. The processed image frame may be displayed on the display unit 151 or projected to the outside by the projector module 155.

The image frame processed by the camera module 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more camera modules 121 may be provided according to a use environment. The camera module 121 may include a sensor for measuring brightness or illumination of a subject.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like. The sensing unit 140 detects the current state of the portable terminal 100 such as the open / closed state of the portable terminal 100, the position of the portable terminal 100, the presence or absence of a user contact, the orientation of the portable terminal, the acceleration / deceleration of the portable terminal, and the like. To generate a sensing signal for controlling the operation of the portable terminal 100. For example, when the portable terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed, and in the case of a folder phone, it may detect whether a folder is open. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. The sensing unit 140 may include a proximity sensor 141.

The output unit 150 is used to generate output related to visual, auditory, or tactile senses, which includes a display unit 151, an audio output module 152, an alarm unit 153, a haptic module 154, and a projector module. 155, and the like.

The display unit 151 displays (outputs) information processed by the portable terminal 100. For example, when the portable terminal is in a call mode, a user interface (UI) or a graphic user interface (GUI) related to a call is displayed. When the portable terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays a photographed or received image, a UI, or a GUI.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible). and at least one of a 3D display.

Some of these displays may be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display is TOLED (Transparant OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

According to an implementation form of the portable terminal 100, two or more display units 151 may exist. For example, the plurality of display units may be spaced apart or integrally disposed on one surface of the portable terminal 100, or may be disposed on different surfaces.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 may be configured in addition to an output device. It can also be used as an input device as a user input unit. The touch sensor may have, for example, a form of a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor may be configured to detect not only the position and area of the touch but also the pressure at the touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of a portable terminal surrounded by the touch screen or near the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. Proximity sensors have a longer life and higher utilization than touch sensors.

Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, the touch screen is configured to detect the proximity of the pointer by the change of the electric field according to the proximity of the pointer. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position where the proximity touch is performed by the pointer on the touch screen refers to a position where the pointer is perpendicular to the touch screen when the pointer is in proximity proximity.

The proximity sensor detects a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). Information corresponding to the sensed proximity touch operation and proximity touch pattern may be output on the touch screen.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 may also output a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the portable terminal 100. The sound output module 152 may include a receiver, a speaker, a buzzer, and the like. In addition, the sound output module 152 may be provided with a plurality of modules for the call mode and the module for outputting the sound generated during the reproduction of the multimedia.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the portable terminal 100. Examples of events occurring in the portable terminal include signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than a video signal or an audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152, so that they 151 and 152 may be classified as part of the alarm unit 153.

The haptic module 154 generates various tactile effects that the user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or may be sequentially output.

In addition to vibration, the haptic module 154 may be configured to provide a pin array that vertically moves with respect to the contact skin surface, a jetting force or suction force of air through the jetting or suction port, grazing to the skin surface, contact of the electrode, electrostatic force, and the like. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

The haptic module 154 may not only deliver the haptic effect through direct contact, but also may implement the user to feel the haptic effect through a muscle sense such as a finger or an arm. Two or more haptic modules 154 may be provided according to a configuration aspect of the portable terminal 100.

The projector module 155 is provided to convert and project an image signal into projection light. The projector module 155 may convert a still image or a dynamic image captured by the camera module 121 into projection light and project the converted image.

In addition, the image or image projected by the projector module 155 may be an image or image included in an image signal wirelessly received from the outside through the wireless communication unit 110. When photographing an image of a subject using the camera module 121, the projector module 155 projects the image captured by the camera module 121 or the stored image on the storage unit 160 as projection light. At the same time, the sound output module 152 may output a sound signal input from the microphone 122 or stored in the storage unit 160 as a sound.

Likewise, when projecting image signals wirelessly received from the outside through the wireless communication unit 110 as projection light, when an audio signal is provided together with the image signal, the sound output module 152 may output the sound signals together. .

The projector module 155 may be a method in which a transmissive LCD panel or a Lcos panel is used as an image element, and an LED or the like may be used as the light source. In recent years, a laser light type projector module has been introduced as a projector module. The laser light type projector module may be applied to a portable projector because the time required for preheating is very short and power consumption is small.

The memory 160 may store a program for the operation of the controller 180 and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). The memory 160 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, optical disk. The portable terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path with all external devices connected to the portable terminal 100. The interface unit 170 receives data from an external device, receives power, transfers the power to each component inside the portable terminal 100, or transmits the data inside the portable terminal 100 to an external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip that stores various types of information for authenticating the use authority of the portable terminal 100. The identification module may include a user identification module (UIM), a subscriber identify module (SIM), and a universal user authentication module ( Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Therefore, the identification device may be connected to the terminal 100 through a port.

The interface unit may be a passage through which power from the cradle is supplied to the portable terminal 100 when the portable terminal 100 is connected to an external cradle, or various command signals input from the cradle by the user may be used. It may be a passage that is delivered to the terminal. Various command signals or power input from the cradle may be operated as signals for recognizing that the portable terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the portable terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. The controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on the touch screen as text and an image, respectively.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

Various embodiments described herein may be implemented in a recording medium readable by a computer or similar device using, for example, software, hardware or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions.

In some cases such embodiments may be implemented by the controller 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. The software codes are stored in the memory 160 and can be executed by the control unit 180. [

2 is a front perspective view of an example of a portable terminal 100 according to the present invention.

The body of the portable terminal 100 disclosed in FIG. 2 may be provided in a bar form. However, the present invention is not limited thereto, and may be applied to various structures such as a slide type, a folder type, a swing type, a swivel type, and two or more bodies are coupled to be movable relative to each other. do.

The body includes a case forming an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. Various electronic components are built in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be further provided between the front case 101 and the rear case 102.

The cases may be formed by injecting synthetic resin, or may be formed to have a metal material, for example, stainless steel (STS), aluminum (Al) or titanium (Ti).

The terminal body, mainly the front case 101, includes a display unit 151, an audio output unit 152, a first camera module 121, a user input unit 130-1 / 131-1, 132, a microphone 122, and an interface unit. 170 and the like can be disposed.

As described above, when the display unit 151 and a sensor for detecting a touch operation (hereinafter referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 ) May also be used as an input device as a user input in addition to the output device. As described above, the touch sensor may have the form of a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or capacitance generated in a specific portion of the display unit 151 into an electrical input signal, and the touch sensor may be touched. And not only the area but also the pressure at the touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits the corresponding data to the controller 180 of FIG. 1. As a result, the controller 180 can know which area of the display unit 151 is touched.

The audio output unit 152 and the first camera module 121 are disposed in an area adjacent to one end of both ends of the display unit 151, and the first user input unit 131 and a microphone (not shown) in an area adjacent to the other end. ) Is placed. The second user input unit 132 and the interface unit 170 may be disposed at the sides of the front case 101 and the rear case 102. The user input unit may provide a command for controlling an operation of the portable terminal 100. The first, second, and third user input units 131, 132, and 133, which are manipulated to receive an input, may be included.

The first, second, and third user inputs 131, 132, 133 may be employed in any manner as long as the user is in a tactile manner of operation unit having a tactile feeling.

The contents input by the first, second, and third user input units 131, 132, and 133 may be variously set. For example, the first user input unit 131 receives a command such as start, end, scroll, and the like, and the second user input unit 132 adjusts the volume of the sound output from the sound output unit 152 or the display unit 151. Command), such as switching to the touch recognition mode.

In addition, the third user input unit 133 may be a control signal input unit for controlling the camera module or the like, and like the second user input unit 132, the third user input unit 133 may be disposed on side surfaces of the front case 101 and the rear case 102. Can be.

In addition, the portable terminal according to the present invention includes a projector module 155. The projector module 155 includes a projection lens, a light source, and an image device for converting an image signal into an image. The projector module 155 is a concept including a photometric sensor for measuring the illumination required for the projection of the projection light or the brightness or illumination of the subject, etc., may be modularized into one unit.

The projector module 155 is mounted inside the front case 101 and the rear case 102 constituting the main body of the portable terminal, and is mounted to expose the projection lens to the outside to project the projection light.

The projector module 155 may be mounted inside the longitudinal end of the portable terminal. In the embodiment shown in Figures 2 and 3, the projector module 155 is provided on the top of the portable terminal. Then, the projection lens of the projector module 155 is mounted to be exposed to the side of one end in the longitudinal direction.

The projector module 155 may project an image signal as a broadcast signal received wirelessly from the outside through the wireless communication unit 110, stored in the storage unit 160, or the like, and received by the broadcast receiving module 111. Can be converted and projected.

When converting and projecting an image signal into projection light by using the projector module 155, it is inconvenient for a user to project an image by holding a portable terminal. Therefore, it is necessary to mount or mount a fixed object on a fixed object. Therefore, the portable terminal according to the present invention employs a projection angle adjusting member for changing the projection direction of the projection light projected from the projector module. The details will be postponed later.

3 is a rear perspective view of the portable terminal shown in FIG. 2.

In FIG. 3, a second camera module 121 ′ may be provided on the rear surface of the rear case 102. The second camera module 121 ′ may be a camera module having different pixels from the first camera module 121 (see FIG. 2).

For example, the first camera module 121 has a low pixel so that the user's face is photographed and transmitted to the counterpart in case of a video call, and the second camera module 121 'captures a general subject. In many cases, they do not transmit immediately, so they may have a high pixel.

Accordingly, the flash 123 and the mirror 124 may be further disposed near the second camera module 121 ′. The flash 123 supplies light toward the subject when the subject is photographed by the second camera module 121 '. The mirror 124 allows the user to see his / her own face or the like when photographing (self-photographing) the user using the second camera module 121 '.

In addition, a second sound output unit 152 ′ may be further disposed on the rear surface of the rear case 102. The second sound output unit 152 ′ may implement a stereo function together with the sound output unit 152 (see FIG. 2), and may be used to implement a speakerphone mode during a call.

The second sound output unit 152 ′ may have a different output from the first sound output unit 152 shown in FIG. 2. For example, the second sound output unit 152 ′ may have a larger output than the first sound output unit 152.

An antenna (not shown) for receiving a broadcast signal may be additionally disposed on the side of the portable terminal. An antenna that forms part of the broadcast receiving module 111 (refer to FIG. 1) may be installed to be pulled out of the terminal body.

The power supply unit 190 may be mounted inside the portable terminal to supply power to the portable terminal. The power supply unit 190 may be built in or may be configured to be directly detachable from the outside of the terminal body. The power supply unit 190 may be a rechargeable battery.

In order to project an image using the portable terminal 100, the housing of the portable terminal 100 is mounted upright (when the projector module 155 is mounted on the front or rear of the case), or kept lying down ( 2 and 3, when the projector module 155 is mounted on the side of the housing). When the portable terminal is lying down, the captured image or the projected projection light is interfered by the passing surface.

Therefore, there is a need for a method capable of adjusting the projection angle of the projection light projected by the projector module 155.

Hereinafter, a method of adjusting the projection angle of the projection light projected by the projector module 155 will be described with reference to the accompanying drawings. Parts that overlap with the description with reference to FIGS. 2 and 3 will be omitted.

According to an aspect of the present invention, there is provided a portable terminal including a display unit and a projector module for converting and projecting an image signal into projection light including an image; A main body housing accommodating the display unit and the projector module; It provides a portable terminal comprising a; projection angle adjustment member for changing the projection angle of the projection light by refracting or reflecting the projection light projected from the projector module. The projection angle adjusting member may be a refractive lens or a reflector 600.

4 illustrates one embodiment of a portable terminal according to the present invention. In the embodiment shown in Figure 4, the projection angle adjusting member is a case that the refractive lens 300 is employed.

In the portable terminal illustrated in FIG. 4, the projector module 155 is built into the main body housing to project projection light toward the upper side of the portable terminal.

The projector module means that a light source for providing light, an image element for converting an image signal, and a projection lens 155a for projecting the light from the light source are projected into one unit in the housing 155b of the projector module. The projection lens 155a of the projector module may be disposed so that the projection lens 155a faces the side of the projection unit 103 provided in the main body housing of the portable terminal.

The projection unit 103 may be a transmissive glass or plastic, and may be made of a material capable of projecting the projection light without loss.

The refractive lens 300 as the projection angle adjusting member for changing the projection angle of the projection light by refracting or reflecting the projection light projected by the projector module 155 between the main body housing, that is, the projection unit 103 and the projector module 155. It may be provided.

The refractive lens 300 is mounted to change the projection direction of the projection light projected by the projector module 155 in the vertical direction.

That is, in the portable terminal illustrated in FIG. 4, when the portable terminal is mounted on a table or the like in the absence of the refractive lens, the portable terminal includes a flat and elongated main body housing, which is provided at one end in the longitudinal direction of the main body housings 101 and 102. When the projection light is projected on the projection unit 103 side, the projection light may cause interference with the upper surface (installation surface) of the table.

Therefore, in a state where the portable terminal is mounted horizontally on the installation surface, the projection angle should be adjustable to avoid interference between the projection light and the installation surface such as a table.

Therefore, the refractive lens 300 interposed between the projector module 155 and the projection unit 103 adjusts the incident projection light upward.

In addition, the refractive lens 300 may have a rotation shaft 310 at one end thereof. The rotating shaft 310 shown in FIG. 4 (a) is connected to the driving wheel 320. When the driving wheel 320 is rotated, the rotating shaft 310 provided at one end of the refractive lens 300 may rotate, and as a result, the refractive lens 300 may rotate.

A portion of the driving wheel 300 may be mounted to the main body housings 101 and 102 so as to be exposed to the outside of the main body housing. When a part of the driving wheel is exposed to the outside of the main body housing, the user can roll the exposed driving wheel 320 to adjust the angle of the refractive lens.

In order to expose a part of the driving wheel 320 to the outside, an opening 105 is formed in the main body housing. In the embodiment shown in FIG. 4A, the opening 105 is the main body. It may be formed on the front surface of the housing 101.

FIG. 4B is a cross-sectional view of the vicinity of the projector module 155 and the refractive lens 300 of the portable terminal shown in FIG. 4A.

The refractive lens 300 is disposed between the projector module 155 and the projection unit 103 of the main body housing so that the projection light projected from the projection lens 155a of the projector module may be incident on the refractive lens 155. Located in

The refractive lens 300 may have a structure that becomes thinner from top to bottom. In addition, the projector may have a length such that the entire projection light projected by the projection lens of the projector module can be incident.

4 (c) briefly illustrates a principle in which the projection angle of the projection light incident on the refractive lens 300 is changed.

By rotating the rotating shaft 310, it is possible to adjust the projection light projected from the lens unit 155a of the projector module 155, or selectively determine whether to enter the refractive lens 300. The principle of adjusting the projection angle of the projection light is illustrated in FIG. 4 (c), and a method of preventing the projection light from being incident or refracting selectively to the refractive lens will be described later.

The refractive lens 300 illustrated in FIG. 4C has a transmissive prism structure whose thickness becomes thinner from the top to the bottom.

When it is assumed that the projection light projected on the incident surface rs of the refractive lens is incident perpendicularly to the incident surface rs, the vertically incident projection light proceeds without additional refraction and is provided on the opposite side to the incident surface rs. The projection angle may be changed while being refracted while passing through the slope ps.

As shown in FIG. 4C, since the projection lens corresponds to a medium having a denser density than air, the magnitude of the incident angle x1 and the refractive angle y1 at the projection surface of the light l1 projected from the top of the projection light is the incident angle x1 is the refractive angle. It becomes smaller than y1. Therefore, the light l1 at the top of the projection light is projected upward, and likewise, the light l2 projected from the bottom of the projection light has a magnitude of the incident angle x2 and the refractive angle y2 on the projection surface smaller than the refractive angle y2. Therefore, the light l2 projected from the upper end of the projection light is projected upward.

Rotating the rotation axis provided at one end of the refractive lens 300 can of course adjust the inclination of the incident surface (rs) of the refractive lens 300, in some cases, may not be adjusted to the projection direction of the projection light have.

5 shows another embodiment of a portable terminal according to the present invention. In the description of the portable terminal illustrated in FIG. 4, overlapping portions will be omitted.

Although the portable terminal illustrated in FIG. 5 is common in that it includes a refractive lens 300 like the portable terminal illustrated in FIG. 4, the driving motor 330 provides a driving force for adjusting an installation angle of the refractive lens 300. There is a difference in that it is provided.

That is, a driving motor 330 for driving the rotating shaft provided at one end of the refractive lens 300 is provided at one end. Therefore, a user input unit (not shown) for driving the driving motor may be provided in the main body housing, and a user UI may be provided to adjust the projection direction of the projection light through the user input unit. Of course, a separate user input unit and a control UI may be provided together.

6 shows another embodiment of a portable terminal according to the present invention. Specifically, FIG. 6 (a) shows a state in which the portable terminal and the detachable refraction device 400 are separated, and FIG. 6 (b) shows the state in which the refraction device 400 is mounted, and FIG. 6 ( c) shows a cross-sectional view of the state in which the refractive apparatus 400 is mounted.

In the embodiment shown in Figure 6, the refractive lens 300 for adjusting the projection angle of the projection light is provided detachably rather than mounted inside the main body housing of the portable terminal.

In the portable terminal illustrated in FIG. 6, the refractive lens 300 for selectively adjusting the projection angle of the projection light may be provided inside the refractive apparatus housing 350 that is selectively attached to or detached from the main body housing. The refractive apparatus housing 350 may be provided with at least one mounting protrusion 355 to be selectively mounted on the main body housing, and the mounting protrusion 355 of the refractive apparatus housing may be inserted into the main body housing. Mounting groove 107 may be provided in a corresponding position. Positions of the mounting protrusion 355 and the mounting groove 107 may be changed in the body housing and the refraction device housing 350.

6 and 5, the rotating shaft 310 is mounted at one end of the refractive lens, and the driving wheel 320 for rotating the rotating shaft includes the refractive apparatus housing. 350 is partially exposed to the outside. Accordingly, an opening 355 may be formed in the refractive apparatus housing 350 to expose a part of the driving wheel 320 to the outside, and the principle of refraction of the projection light is common to the embodiment shown in FIG. 4. do.

7 shows another embodiment of a refractive lens of a portable terminal according to the present invention.

Specifically, FIG. 7 (a) shows a state in which the refractive lens 300 mounted on the portable terminal adjusts the projection angle of the projection light projected from the projector module 155, and 7 (b) shows the refractive lens mounted on the portable terminal. Is rotated and the projection light projected from the projector module 155 is projected without being incident on the refractive lens 300. FIG. 7 (c) shows the refractive lens 300 and the rotation axis 310 and The coupling relationship of the drive wheel 320 is shown.

In the embodiment shown in FIG. 7, the refractive lens 300 is rotatably mounted between the projector module 155 and the projection unit 103 of the main body housing, similar to the embodiment shown in FIG. 4 or 5. It is common in that it becomes. However, in the embodiment shown in FIG. 4, the projection light projected from the projector module is incident to the refractive lens 300 unconditionally. Therefore, even if the refraction lens 300 is properly rotated to prevent upward projection, the image may be distorted during the refraction process. Thus, the projection angle of the projection light is adjusted upward or downward using the projection lens 300. If this is not the case, a method is needed to prevent the projection light from entering the refractive lens.

As shown in FIG. 6, in the case of attaching and detaching the refraction device 400 having the refractive lens 300 to and detaching from the main body housing, the refractive lens 300 is separately provided in the main body housings 101 and 102. If fitted, a way to solve this is required.

Therefore, in the embodiment illustrated in FIG. 7, when the rotation shaft 310 provided at one end of the refractive lens 155 is provided near a vertex of one end in the longitudinal direction in the cross-sectional reference direction of the projection lens 300, the rotation shaft 310 is provided. Rotate the driving wheel (see FIG. 4) or operate the driving motor (see FIG. 5) to rotate the refractive lens 300 to a position where the projection light projected from the projector module 300 is not incident. In this case, since the projection light projected by the projection lens of the projector module may be projected through the projection unit without being incident on the refractive lens, it is possible to prevent the adjustment of the projection direction by the refractive lens.

As shown in FIG. 7, the refractive lens 300 has a slim triangular prism shape, and the main body housing may have a space in which the refractive lens is accommodated when the refractive lens 300 is rotated. .

As shown in FIG. 7 (c), the refractive lend has a slim triangular prism shape, and a rotation shaft 310 provided at one end thereof is connected to the upper portion of the refractive lens 300. Accordingly, the refractive lens 300 is positioned at a position where the lower portion of the refractive lens 300 is rotated and the projection light projected from the projector module 155 is not incident upon the rotation of the rotating shaft.

8 shows another embodiment of a projection lens according to the present invention. Specifically, FIG. 8 discloses another method for the refractive lens to selectively refract projection light. Specifically, FIG. 8A may selectively refract the projection light by the method in which the refractive lens 300 is displaced in the axial direction of the rotation axis.

Specifically, FIG. 8 (a) is a perspective view of the portable terminal, FIG. 8 (b) shows a state in which the projection lens of the portable terminal of FIG. 8 (a) refracts projection light, and FIG. 8 (c) is FIG. 8. The state in which the projection lens of the portable terminal of (a) is displaced in the direction of the rotational axis so that the projection light is projected without refraction.

Unlike the embodiment illustrated in FIG. 7, the method of blocking the incidence of the projection light by the refractive lens illustrated in FIG. 8 may be performed by rotating the refractive lens 300 of the rotating shaft 310 instead of the rotation of the refractive lens 300. A method of axial displacement is used. Using the method of displacing the refractive lens 300 in the axial direction of the rotation axis, the refractive lens 300 may be selectively refracted projection light.

The embodiment shown in FIG. 7 rotates the projection lens 300 to block the incident light of the projection light, but since the projection lens 300 is accommodated by rotating the projector, the projector module 155 is required. The distance between the projection unit 103 and the main body housing is a problem, but in the embodiment shown in Figure 8 the refractive lens 300 in the axial direction of the rotation axis 310 provided for the rotation of the refractive lens Since the displacement of the projection light can be avoided, the distance between the projector module 155 and the projection unit 103 of the main body housing can be minimized and the refractive lens can be disposed inside the main body housing.

Therefore, in the embodiment illustrated in FIG. 8, the opening 105 ′ formed in the main body housing so that a part of the driving wheel 320 is exposed has a width in the axial direction of the rotation shaft than the opening illustrated in FIG. 4 or the like. It may be formed to be large.

The operation of displacing the refractive lens 300 may be performed by a user's hand, but may be automatically provided with a separate propulsion device (not shown).

9 shows another embodiment of a portable terminal according to the present invention. In the embodiment shown in Fig. 9, a reflecting mirror 600 is employed as the projection angle adjusting member for adjusting the projection angle of the projection light.

In detail, FIG. 9A illustrates a state in which the projection light projected by the projector module 155 is reflected by the reflector 600 mounted inside the main body housing of the portable terminal to change the projection direction of the projection light. b) shows a state in which the reflector 600 is rotated so that the projection light is projected without the reflection of the reflector 600.

Unlike the refractive lens of the above-described embodiments, the reflector 600 may reflect the projection light to adjust the projection angle of the projection light. Although the refractive lens 300 refracts the projection light passing through the refractive lens 300 to adjust the projection angle of the projection light, the embodiment shown in FIG. 9 reflects the projection light to change the projection angle of the projection light. Has characteristics.

In the above-described embodiments, the case in which the projection unit projecting the projection light is provided in the main body housing is illustrated, but in the embodiment shown in FIG. 9, the projection unit is the side surface of the upper end of the main body housing (the first projection unit 103). ) And the rear surface of the main body housing (the second projection part 103 ') are provided. However, the position and number of the projection parts may be variously changed.

In the embodiment shown in FIG. 9, the second projection part 103 ′ is formed on the rear surface of the main body housing, but the projection part may be provided on the front surface of the main body housing.

The projection unit may be made of a light transmissive material (glass or transmissive plastic) to which the projection light reflected from the reflector is projected.

Similarly to the above-described siling example, the portable terminal shown in FIG. 9① is provided with the projector module 155 disposed on the upper part of the main body housing, and the projection lens 155a of the projector module 155 has the side surface of the upper end of the main body housing. It may be arranged to project the projection light toward.

Therefore, if the reflector 600 does not reflect the projection light, the projection light is projected through the first projection unit 103.

First, as shown in FIG. 9A, the projection light projected from the projector module 155 is reflected by the reflector 600 mounted inside the main body housing of the portable terminal to change the projection direction of the projection light. Like the above-described embodiments, the reflector 600 may be selectively rotated by providing a rotation shaft 610 at one end thereof.

Similarly, a driving wheel may be provided on the rotation shaft 610, and a part of the driving wheel 620 may be exposed to the outside. The reflector 600 may selectively project the projection light to the first projection part 103 and the second projection part 103 'depending on whether the projection light is reflected, but reflect the projection light to the second projection When the projection 103 'is projected, the projection direction of the projection light projected onto the second projection 103' may be additionally adjusted. That is, in addition to changing the projection direction from the first projection portion to the second projection portion 103 ', the projection direction of the projection light projected onto the second projection portion 103' may be additionally adjusted by rotating the reflector.

As shown in (a) of FIG. 9 (a), when the incident angle of the projection light incident on the reflector 600 provided at the front end of the projection lens of the projector module is adjusted in an inclined state, the second projection part 103 ' You can adjust the projection angle of the projected light with.

FIG. 9B illustrates a state in which the reflector 600 is rotated in parallel with the main body housing by using a rotation shaft and a driving wheel provided in the reflector 600. As shown in (b) of FIG. 9 (b), the reflector 600 is in a state of not interfering with the projection light.

9 (a) is a method that can be used when projecting the projection light through the second projection unit 103 'provided on the back of the main body housing when projecting an image by standing up a portable terminal. 9 (b) is used when projecting the projection light toward the side of the upper end of the main body housing, when the portable terminal is mounted with the portable terminal lying down, or when the user directly lifts the portable terminal and projects an image. That's how it can be.

10 shows another embodiment of a portable terminal according to the present invention. The difference between the embodiment shown in FIG. 10 and the embodiment shown in FIG. 9 is different in that it is provided by a driving motor 630 instead of a driving wheel for adjusting the reflection angle of the reflector 600.

The reflector 600 has a rotation shaft 610 at one end thereof, a driving motor 630 for driving the rotation shaft 610 is provided at one end, and a user input unit for driving the driving motor 630 ( Not shown) may be provided separately in the main body housing, a user UI may be provided to adjust the projection direction of the projection light through the user input unit, or a separate user input unit and a control UI may be provided together. The same applies to a portable terminal having a refractive lens.

11 shows another embodiment of a portable terminal according to the present invention. The portable terminal according to the present invention shown in FIG. 11 includes a reflecting apparatus 700 detachably attached to the main body housing. The reflecting apparatus 700 has a reflecting mirror 600 therein.

Specifically, (a) of FIG. 11 is a perspective view of the main body housing and the reflecting apparatus 700 of the portable terminal separated, and FIG. 11 (b) shows that the reflecting apparatus 700 of the portable terminal is mounted on the main body housing of the portable terminal. FIG. 11C is a cross-sectional view of the portable terminal in which the reflector 700 is mounted.

The projection light provided by the projector module 155 is projected through the projection unit (or projection lens) provided at the upper side of the main body housing when the reflecting apparatus 700 is not mounted, but the projection light as necessary. The reflector 700 may be mounted to project the light toward the rear direction or the front direction of the main body housing.

The reflecting apparatus 700 includes the refractive apparatus and the refractive lens 600 shown in FIG. 6 or the reflecting mirror 600, and the projection direction of the projection light refracted or reflected by the refractive apparatus or the reflecting apparatus is in the longitudinal direction of the main body. There is a difference between the front or rear direction of the main body housing.

As illustrated in FIG. 11C, the refraction apparatus 700 may change the projection angle of the image by reflecting the projection light provided from the projector module 155 in a state where the refraction device 700 is mounted in the main body housing.

Further, in addition to changing the projection direction of the projection light provided from the projector module 155 at right angles, the rotation angle 610 provided in the reflector 600 is rotated to adjust the reflection angle of the projection light reflected from the reflector 600. Can be. Therefore, in some cases, upward projection or downward projection of the projection light may be possible.

The reflector shown in FIG. 11 also has a rotating shaft 610 and a driving wheel 620 at one end of the reflector 600, similar to the refractive apparatus shown in FIG. 5, and the reflector 600, the rotating shaft 610, and the Since a part of the driving wheel 620 is provided with a reflector housing 750 and a mounting protrusion 755 to be exposed, overlapping description thereof will be omitted.

12 shows another embodiment of a portable terminal according to the present invention. 12 is different in that the reflecting apparatus 700 shown in FIG. 12 has two reflecting mirrors 600 therein.

Including the two reflectors 600 has the following advantages. When one reflector 600 is provided, inversion of the image included in the projection light may occur. That is, when one reflector 600 is mounted or when a reflector having one reflector 600 is mounted, the image may be reversed while the projection light provided from the projector module 155 is reflected. However, if the reflected projection light is reflected again by the additional reflector 600, the image is inverted to have an advantage that the same image as that of the original image can be enjoyed.

In the portable terminal illustrated in FIG. 12, the reflecting apparatus includes a first reflecting mirror 600 and a second reflecting mirror 600 '.

When the first reflecting mirror 600 and the second reflecting mirror 600 'are substantially spaced apart in parallel, the projection light provided from the projector module is reflected from the first reflecting mirror 600 to reflect the second reflecting mirror 600'. The second reflector 600 'reflects the projection light again to project an image onto a screen or a wall.

The reflector housing 750 may have a mounting pipe 755 in the form of a circular pipe, unlike the aforementioned refractor or reflector. If the mounting protrusion is provided in the form of a pipe, and the mounting groove 107 is configured in such a manner that the circular pipe can be inserted, the mounting groove 107 can be rotated while the reflecting device 700 is mounted in the main housing.

When the portable terminal is mounted on a table or the like in a state in which the reflector 700 is not mounted, interference between the projection light and the mounting surface may occur, thereby increasing the projection height of the projection light.

In addition, the reflector 600 constituting the reflector 700 shown in FIG. 12 may also include a driving wheel 620 and a rotating shaft 610 to adjust the installation angle.

In the reflector shown in FIG. 12, the second reflector 600 ′ is provided with a rotation shaft 610 and a driving wheel 620. By adjusting the installation angle of the second reflector 600 'by rotating the driving wheel 620, the projection angle of the projection light reflected and projected by the reflector 700 may be adjusted.

FIG. 13 illustrates a process of reflecting and projecting projection light inside the reflector shown in FIG. 12. More specifically, FIG. 13 (a) shows a case in which the light reflected by the reflector is projected in a state where only the height is changed in parallel with the direction incident to the reflector 700, and FIG. 13 (b) shows the reflection. The projection angle of the projection light projected by the reflector 700 may be upwardly adjusted by rotating the second reflector 600 'constituting the apparatus 700 to reduce the incident angle a of the reflected projection light.

13 (a), the incident angle of the projection light reflected by the second reflector 600 'is a degree, but if the incident angle is reduced by b by rotating the rotation axis, the projection angle of the projection light can be adjusted upward.

In this way, the projection direction of the projection light provided from the projector module 155 can be optimized.

In the embodiments shown in FIGS. 2 to 13, a method of adjusting or changing the projection angle of the projection light provided from the projector module by using a refractive lens (or a refractive device) or a reflector (or a reflection device) has been examined. . However, when the projection direction of the projection light is changed by using the refraction lens or the reflector, distortion of the image, for example, chromatic aberration, image inversion, or change of aspect ratio may occur while the projection light is refracted or reflected. . The distortion of the image increases as the distance between the portable terminal and the screen increases. This problem caused by using a refractive lens or a reflector cannot be solved mechanically, but can be solved using a software method, as described below.

Hereinafter, a method of solving the above-described problems will be described with reference to FIGS. 14 to 17.

14 illustrates a process of processing an image to solve chromatic aberration that may occur when a portable terminal according to the present invention includes a refractive lens.

Since the refractive index of glass and the like becomes smaller as the wavelength of light becomes longer, like a general transparent material, when the image of the object is formed through the refractive lens, the position or magnification of the image varies depending on the color of the object (light wavelength). It is called tea. When looking at white light through a refractive lens with chromatic aberration, the longer the wavelength is closer to red, the farther the focus is from the lens, and the shorter the wavelength is closer to the lens, the closer the lens is.

That is, the projection light projected onto the refractive lens that can be applied to the portable terminal according to the present invention is that the incident projection light is a mixture of light of various colors, while passing through the refractive lens, the violet light having the shortest wavelength When passing through the refraction lens, the angle of refraction is greatest, and the red light with the longest wavelength has the smallest angle of refraction.

Accordingly, among the projection light beams provided by the projector module, the red light projection light is relatively less refracted, and the violet light projection light is relatively more refracted.

Fig. 14 (a) shows the original image, Fig. 14 (b) shows the projected image when the projection light projected from the projector module without the refractive lens is projected normally on the screen, and Fig. 14 (c) shows the projector. The projection light projected from the module displays an image formed by the projection light passing through the refractive lens when the refractive lens is used for upward projection, and FIG. 14 (d) shows the projection of the original image as the projection light. FIG. 14E illustrates an image obtained by converting the temporary image of FIG. 14D into projection light and projecting the temporary image formed to correct chromatic aberration.

If the refractive lens is not used, the image formed by the projection light will be a distortion-free image as shown in Fig. 14 (b), but if the refractive lens is used without correction of the original image as shown in Fig. 14 (c) As described above, an image may be formed to reach a position that is higher upward than the letter “R” indicated in red in the refraction of the letter “P” indicated in purple. That is, chromatic aberration will occur if there is no proper correction process according to the difference in refractive index.

Therefore, when the refractive lens is used, in order to remove the chromatic aberration as described above, as shown in Fig. 14 (d), the letter "P" displayed in purple is more upward than the letter "R" indicated in red. Create a temporary image to be displayed.

Since the image shown in FIG. 14 (d) is an image formed when the projection light is generated by projecting the temporarily processed image, the image shown in FIG. 14 (d) is converted into the projection light and projected onto the refractive lens. As shown in FIG. 14E, the same result as the original image can be obtained.

4 to 8, when the refractive lens is used, an example is used to upwardly adjust the projection direction of the projection light. Therefore, the chromatic aberration of the image shown in FIG. 14 indicates that light having a short wavelength is displayed upward. It is marked as distorted. Therefore, in the case of using the refraction lens for adjusting the projection direction of the projection light downward projection of the violet-based light shown in Figure 14 (c) will be seen to be shifted downward rather than upward.

Since the image distortion due to chromatic aberration may worsen the overall sharpness of the image due to the projection light, as shown in FIGS. 14 (d) and 14 (e), the temporary image assuming chromatic aberration is converted into projection light. Projection can reduce distortion of an image due to chromatic aberration, as shown in FIG.

15 is a block diagram of a method for correcting chromatic aberration when using a refractive lens.

The user who wants to project the projection light by the projector module may project the projection light from the projector module according to the user's control signal input through the control of the portable terminal (S100).

If the user sets the correction of the chromatic aberration in advance in preparation for the occurrence of the chromatic aberration (S200) or selects the correction of the chromatic aberration during the projection process (S200), in the embodiments shown in FIGS. 2 to 8, the angle of the refractive lens Alternatively, the sensing unit 140 detects a position and the like, and determines whether to use the refractive lens (S300).

That is, when the angle and the position of the refractive lens corresponds to the angle and the position at which the projection light is incident, the control unit generates a temporary image (S400) and converts the temporary image into projection light (S500A), to the temporary image By the projection light (S600A).

However, even if the user sets the correction of the chromatic aberration in advance in preparation for the occurrence of the chromatic aberration (S200) or selects the correction of the chromatic aberration during the projection process (S200), in the step of determining whether to use the refractive lens (S300), the refractive lens When the refractive lens is rotated at an angle at which the projection light is not incident on or the position of the refractive lens moves to the state where the projection light is not incident, the user sets the correction of the chromatic aberration in advance in preparation for the occurrence of chromatic aberration (S200). Even when the chromatic aberration correction is selected (S200) during the projection process, the correction for chromatic aberration is unnecessary.

Therefore, in this case, the original image may be converted into projection light (S500B), and the projection light by the original image may be projected (S600B).

As shown in FIG. 7 and FIG. 8, it may be optional for the projection light to be incident on the projection lens even in a portable terminal having a refractive lens.

This determination is a method of correcting chromatic aberration when using a refractive lens by rotating or moving the refractive lens for adjusting the projection direction of the projection light, the process of the projection light incident on the refractive lens can be selectively controlled And, it is assumed that the sensing unit of the portable terminal can determine whether the projection light is incident on the refractive lens.

Therefore, the sensing unit may be set to detect whether the refractive lens refracts the projection light by detecting a rotational displacement of the refractive lens or the like.

16 illustrates a process of processing an image to solve image inversion that may occur when the portable terminal according to the present invention includes the reflector 600.

FIG. 16 (a) shows an original image for display on the projector module, FIG. 16 (b) shows an image of the projected image when the projection light projected from the projector module without a reflector is normally projected on a screen, etc. FIG. 16 (c) shows an image formed by the projection light reflected from the reflector when the reflector is used for changing the projection direction of the projection light projected from the projector module, and FIG. 16 (d) shows the projection image of the original image. In the case of the projection, the temporary image for correcting the image inversion is shown, and FIG. 16 (e) shows an image in which the projection light including the temporary image of FIG. 16 (d) is reflected by the reflector 600 and formed on a screen or the like. .

In the description of FIG. 14, a temporary image for image reversal is generated by generating a temporary image for image reversal except that a reflector 600 is used instead of a refractive lens, and a problem that occurs when one reflector 600 is used is image inversion instead of chromatic aberration. By converting the projection light into a projection light and reflecting the light by the reflector again, the same image as that of the original image can be displayed.

17 is a block diagram of a method of correcting image inversion when using a reflector. Descriptions common to correction methods for removing chromatic aberration generated when using a refractive lens are omitted.

Similarly, it is determined whether the correction of the image inversion is selected (S100 (2)) or whether the correction of the image inversion is set (S100 (2)) (S300 (2)).

That is, when the angle or position of the reflector corresponds to the angle and position at which the projection light is reflected, the controller generates a temporary image (S400 (2)) and converts the temporary image into projection light (S500A (2)). Thus, projection light (S600A (2)) by the temporary image is projected.

However, even if the user has previously set the correction of the image inversion in preparation for the occurrence of the image inversion (S200 (2)) or the correction of the image inversion during the projection process (S200 (2)), the use of the reflector 600 is used. In the step of determining (S300 (2)), the reflector 600 is rotated at an angle at which the projection light is not reflected to the reflector 600, or the position of the reflector is moved in a state where the projection light is not incident. In this case, even if the user sets the correction of the image reversal in advance (S200 (2)) or selects the correction of the image reversal during the projection process (S200 (2)) in preparation for the occurrence of the image reversal, No correction is necessary.

Therefore, in this case, the original image may be converted into projection light (S500B (2)) and the projection light by the original image may be projected (S600B (2)).

In addition, when the projection light is upwardly projected using a refraction lens and the projection direction of the projection light is changed by using a reflector, and when the projection direction is upwardly adjusted (see FIG. 13 (b)), The phenomenon that the image becomes trapezoidal may occur.

Such trapezoidalization of the image (phenomena in which the upper part of the image is larger than the lower part) is solved using software techniques such as dithering, or similarly to the above-described methods for solving problems such as chromatic aberration and image inversion. This can be solved to some extent by creating a temporary image (projection light generated by making the upper part of the image smaller than the lower part).

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims. . It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

1 is a block diagram of a portable terminal related to an embodiment of the present invention.

2 is a front perspective view of an example of a portable terminal 100 according to the present invention.

3 is a rear perspective view of the portable terminal shown in FIG. 2.

4 illustrates one embodiment of a portable terminal according to the present invention.

5 shows another embodiment of a portable terminal according to the present invention.

6 shows another embodiment of a portable terminal according to the present invention.

7 shows another embodiment of a refractive lens of a portable terminal according to the present invention.

8 shows another embodiment of a projection lens according to the present invention.

9 shows another embodiment of a portable terminal according to the present invention.

10 shows another embodiment of a portable terminal according to the present invention.

11 shows another embodiment of a portable terminal according to the present invention.

12 shows another embodiment of a portable terminal according to the present invention.

FIG. 13 illustrates a process of reflecting and projecting projection light inside the reflector shown in FIG. 12.

14 illustrates a process of processing an image to solve chromatic aberration that may occur when a portable terminal according to the present invention includes a refractive lens.

15 is a block line for a method of correcting chromatic aberration when using a refractive lens;

It is also.

16 illustrates a process of processing an image to solve image inversion that may occur when the portable terminal according to the present invention includes the reflector 600.

17 is a block diagram of a method of correcting image inversion when using a reflector.

Claims (16)

A display unit; A projector module for converting and projecting an image signal into projection light; A main body housing accommodating the display unit and the projector module; And a projection angle adjusting member configured to change the projection angle of the projection light by refracting or reflecting the projection light projected from the projector module. The method of claim 1, And the projection angle adjusting member is a refractive lens mounted inside the main body housing or detachably mounted to the main body housing and refracting projection light. The method of claim 2, When the refractive lens is mounted inside the main body housing, the refractive lens is rotatably mounted between the projection lens and the main body housing of the projector module. The method of claim 3, The refractive lens is provided with a rotation axis at one end thereof in a longitudinal direction, and the projection light is selectively incident on the refractive lens by rotation of the rotation axis, or the incident angle of the projection light incident on the refractive lens is portable, characterized in that the change terminal. According to claim 4, The rotating shaft is connected to the driving wheel, the driving wheel is a portable terminal, characterized in that a portion of which is mounted so as to be exposed to the outside of the main housing. According to claim 4, The rotating shaft is driven by a drive motor provided in the main body housing. According to claim 4, The refractive lens is a portable terminal, characterized in that it is provided inside the refraction device housing that is selectively detachable to the body housing. The method according to claim 7, The rotating shaft is connected to a driving wheel, the driving wheel is a portable terminal, characterized in that a portion of which is mounted so as to be exposed to the outside of the deflector housing. The method of claim 1, The projection angle adjusting member is mounted inside the main body housing or detachably mounted to the main body housing, characterized in that the portable reflector reflecting the projection light. 10. The method of claim 9, When the reflector is mounted inside the main body housing, the reflector is rotatably mounted between the projection lens and the main body housing of the projector module. 10. The method of claim 9, The reflector has a rotation axis at one end thereof in a longitudinal direction, and the projection light is selectively reflected by the reflector by the rotation of the rotation axis, or the incident angle of the projection light incident on the reflector is changed. . 10. The method of claim 9, The reflector is provided with one or two inside the reflector housing that is selectively detachable to the main body housing. The method of claim 12, When the two reflectors are provided, the portable terminal characterized in that it comprises a driving wheel connected to the rotating shaft and the rotating shaft at one end of at least one of the reflectors, the part of which is exposed to the outside of the reflector housing. The method of claim 12, The reflective terminal housing is provided with a mounting pipe having a circular pipe shape, and the main body housing is provided with a mounting groove for rotatably inserting the mounting protrusion. The method of claim 10, And a projection unit made of a light transmissive material on which the projection light reflected from the reflector is projected on the front or rear surface of the main body housing. The method of claim 1, The controller further includes a control unit for controlling the projector module and the display unit. When the projection light projected by the projector module is refracted or reflected, the controller is configured to provide a temporary image for correcting or correcting image inversion or chromatic aberration. And converting the image signal into projection light.

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