KR100803755B1 - Portable electronic device having projection type display unit - Google Patents

Abstract

A portable electronic device having a projection-type display unit and the projection-type display unit are provided to prevent the deterioration of the entire performance caused by the overload of a main control unit by enabling a video control unit to perform various correction of an outputted image, thereby improving processing/outputting speed and miniaturizing the size of the terminal. A portable electronic device comprises a main control unit and a projection-type display unit. The main control unit outputs a video data display instruction including video data information according to user's selection to the projection-type display unit. The projection-type display unit projects an optical signal corresponding to the video data display instruction to realize a 2D(Second-Dimensional) image. The projection-type display unit comprises a light source system(210), a one-dimensional light modulator(230), a scanner(250), and a video control unit(280). The light source system radiates successively light according to a light source control signal. The one-dimensional light modulator modulates the successively inputted light to generate a one-dimensional line image, an optical signal, when a light modulator control signal is inputted. The scanner scans the optical signal in bi-directions when a scanner control signal is inputted and projects the optical signal to realize the 2D image. The video control unit outputs individually the light source control signal, the light modulator control signal, and the scanner control signal corresponding to the video data display instruction to the light source system, the light modulator, and the scanner when the video data display instruction is inputted from the main control unit.

Description

Portable electronic device having a projection display unit

1 is a block diagram of a portable electronic device according to an embodiment of the present invention.

Figure 2 is a schematic configuration diagram of a projection display using a one-dimensional optical modulator according to an embodiment of the present invention.

Figure 3 is a schematic configuration diagram of a projection display using a one-dimensional optical modulator according to another embodiment of the present invention.

4 is a perspective view of a portion of a piezoelectric diffractive light modulator (SOM) in accordance with a preferred embodiment of the present invention.

5 is a perspective view of a portion of a piezoelectric diffractive light modulator (SOM) according to another preferred embodiment of the present invention.

6 is a plan view of a piezoelectric diffractive light modulator (SOM) in accordance with a preferred embodiment of the present invention.

7 is a diagram showing the configuration of one frame projected on a screen according to one preferred embodiment of the present invention.

8 is a block diagram of a portable electronic device and a projection display device according to another embodiment of the present invention.

9 is a block diagram of an image control unit according to an embodiment of the present invention.

The present invention relates to a portable electronic device, and more particularly, to a portable electronic device having a projection display.

As portable electronic devices having various multimedia functions (for example, mobile phones, personal digital assistants (PDAs), notebooks, etc.) are widely used, the demand for realizing large images also increases in portable electronic devices. Doing. However, since the conventional portable electronic device mainly uses a liquid crystal display (LCD) as a display device, there is a problem in that the display device of the portable electronic device cannot be too large or too small in order to be easily carried by a user.

Thus, a portable electronic device having a projection display unit has been developed. However, in the related art, since the projection display unit provided in the portable electronic device controls and outputs a two-dimensional (that is, plane unit) image, the process of processing the image data to be output is complicated, and thus the processing and output time are delayed. There was a problem that caused the overall performance degradation of. In addition, since the device for modulating the processed light (for example, an optical modulator, etc.) must also be configured in two dimensions, it is difficult to miniaturize the size due to the complicated structure, which is not suitable for portable electronic devices.

In order to solve the conventional problems as described above, the present invention is to provide a portable electronic device having a projection display unit of a method for processing a one-dimensional image.

In addition, the present invention is to provide a portable electronic device having a projection display unit that can improve the processing and output speed by providing a projection display unit for processing a one-dimensional image to simplify the processing and output process.

Another object of the present invention is to provide a portable electronic device having a projection display unit that processes a one-dimensional image capable of miniaturization of a terminal.

Other objects of the present invention will be readily understood through the following description.

In order to achieve the above object, according to an aspect of the present invention, in the portable electronic device including a main control unit and a projection display unit, the projection display unit is a light source system for irradiating light according to the light source control signal, An optical modulator for generating a corresponding optical signal by modulating the light according to an optical modulator control signal, a scanner for bidirectionally scanning and projecting the optical signal emitted from the optical modulator onto a screen according to a scanner control signal, and the main controller And an image control unit which transmits and controls the light source control signal, the optical modulator control signal, and the scanner control signal to the light source system, the optical modulator, and the scanner, respectively, in response to an image data display command input through the light source control signal. The image data display command may include a projection display activation command and image data information. In addition, the optical signal represents one vertical or horizontal line image, which is a one-dimensional image of the screen, and a portable electronic device including a projection display unit, characterized in that implemented as a two-dimensional image by scanning in the scanner Is provided.

The image control unit may further include an image corrector, wherein the image corrector may correct the image data information according to an image correction command input through the main controller.

The image data information may include one or more of information on size, color, pixel, and resolution of image data corresponding to an image data output command.

According to another preferred embodiment of the present invention, an external device connection terminal connected to an external device for receiving various signals from the external device, a light source for irradiating light according to an original control signal, and the light modulator An optical modulator for generating a corresponding optical signal by modulating according to a control signal, a scanner for bidirectionally scanning and projecting the optical signal emitted from the optical modulator onto a screen according to a scanner control signal, and an input terminal connected through the external device connection terminal And an image controller for transmitting the light source control signal, the optical modulator control signal, and the scanner control signal to the light source system, the optical modulator, and the scanner, respectively, in response to the image data. A projection display unit active command and image data information, wherein the optical signal is It represents one horizontal or vertical line image of the one-dimensional image of Lynn, a projection display device, characterized in that is implemented as a two-dimensional image by a scan in the scanner is provided.

The image controller may further include an image corrector, wherein the image corrector may correct the image data information according to an image correction command input through the external device connection terminal.

The image data information may include one or more of information on size, color, pixel, and resolution of image data corresponding to an image data output command.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the same reference numerals will be used for the same means regardless of the reference numerals in order to facilitate the overall understanding.

1 is a block diagram of a portable electronic device according to an embodiment of the present invention.

Referring to FIG. 1, the portable electronic device 100 according to an exemplary embodiment of the present invention may include a main controller 110, a wireless communication unit 120, an input unit 130, a storage unit 140, and a camera unit 150. , A multimedia controller 160, a main display unit 170, and a projection display unit 180.

The main controller 110 controls the overall operation of the portable electronic device 100. For example, when the input unit 130 generates a signal corresponding to the user's selection and transmits it to the main control unit 110, the main control unit receives the various functions of the portable electronic device 100 to perform a corresponding operation. (For example, the camera unit 150, etc.) can be controlled.

In particular, the main controller 110 activates the projection display unit 180 and transmits image data (eg, image data (JPEG, BMP, etc.), video data (MPEG, AVI, etc.)) to the projection display unit 180. It performs the function. In this case, a signal for activating the projection display unit 180 (hereinafter, referred to as a “projection display activation command”) may be generated by the input unit 130 according to a user's selection. In addition, the image data is stored in the storage unit 140 or transferred directly from the camera unit 150 to the main control unit 110 (the image data at this time is raw data before being encoded in a preset manner) May be in the form of a). For example, when the projection display unit 180 is activated, a signal for outputting specific image data stored in the storage unit 140 (in this case, the signal may be a signal corresponding to the user's selection). (Hereinafter, referred to as an 'image data output command'), the main controller 110 reads the corresponding image data from the storage unit 140 and outputs the corresponding image data to the projection display unit 180. To send). Of course, the main controller 110 may transmit image data to the main display unit 170 at the same time. In this case, the main controller 110 may generate an image data display command and transmit the image data display command simultaneously or sequentially. The image data display command may include a signal for activating the projection display unit 180 (hereinafter referred to as a projection display activation command) and image data information on a frame forming a screen. For example, the image data information may include red, green, and blue light intensity information of the pixel by (number of pixels of the vertical scanning line) x (number of pixels of the horizontal scanning line).

In addition, the main controller 110 may correct the image data before outputting the image data to the main display unit 170 and / or the projection display unit 180. For example, the main controller 110 may adjust the size, color, and pixel of the image data to be output so as to correspond to a signal for correcting the image to be output (hereinafter, referred to as an 'image correction command'). And after correcting one or more of the resolutions, the corrected image data may be transmitted to the projection display unit 180. In this case, the image correction command may be a signal generated by the input unit 130 by the user's selection and transmitted to the main controller 110.

If the image display corrector 280-1 (see FIG. 9) is included in the projection display unit 180, the main controller 110 may transmit the input image correction command to the projection display unit 180. In this case, the image corrector 280-1 may correct the image data information to correspond to the image correction command. For example, an image correction command for correcting the resolution of the image data to be output through the projection display unit 180 to 640 × 480 (horizontal × vertical) (assuming that the resolution of the image data to be output is set to 320 × 240 in advance). When input by the user's selection, the main controller 110 transmits the input image correction command to the projection display unit 180, and the image corrector 280-1 corrects the image data information to correspond to the image correction command. The image control unit 280 may process the image data to be output to correspond to the corrected image data information.

In addition, when the portable electronic device 100 does not include the multimedia controller 160 separately, the main controller 110 may control the multimedia function. For example, the main controller 110 may control the active control and various operations of the camera unit 150.

The wireless communication unit 120 performs a wireless communication function of the portable electronic device 100. For example, when the wireless communication mode of the portable electronic device 100 is in operation, the wireless communication unit 120 may input voice and / or data signals (eg, video data, picture data, and a short message). Short message Service (SMS), etc.) are decoded in a predetermined manner and transmitted to the main control unit 110 or the voice and / or image signals input through the main control unit 110 are encoded in a predetermined manner. Can be sent outside.

The input unit 130 generates signals corresponding to the user's selection and transmits the signals to the main controller 110. In particular, the input unit 130 generates a projection display activation command, an image data output command, and / or an image correction command for performing the above-described functions, and transmits the generated command to the main controller 110. The input unit 130 may be a keypad and / or a touch pad.

The storage 140 may store various data used in the portable electronic device 100, and in particular, may store image data. For example, the raw image data (raw data) input through the camera unit 150 is encoded by the main controller 110 and / or the multimedia controller 160 and stored in the storage 140. The pre-stored image data may be read by the main controller 110.

The camera unit 150 may convert an image signal input from the outside into an electrical signal to generate raw image data and transmit the raw data to the main controller 110 and / or the multimedia controller 160. In this case, the main controller 110 may control the input image source data to be displayed through the main display unit 170 and / or the projection display unit 180.

The multimedia controller 160 controls a variety of multimedia functions (eg, MP3 file playback function, camera function, etc.) included in the portable electronic device 100. For example, a function of decoding input image data or encoding original image data may be performed. However, it will be apparent to those skilled in the art that the portable electronic device 100 may be implemented to perform the functions performed by the multimedia controller 160 in the main controller 110 without providing the multimedia controller 160 separately.

The main display unit 170 performs a function of outputting various functions performed by the portable electronic device 100 so that a user can recognize the same. For example, image data corresponding to an image data output command may be processed by the main controller 110 and output to the outside through the main display unit 170. The main display unit 170 may be a liquid crystal display (LCD).

The projection display unit 180 also performs a function of outputting various functions performed by the portable electronic device 100 so that a user can recognize the same. According to a user's selection, the projection display unit 180 may operate alone or simultaneously with the main display unit 170.

Hereinafter, the configuration and function of the projection display unit 180 will be described with reference to FIGS. 2 to 7.

2 is a schematic configuration diagram of a projection display unit using a one-dimensional optical modulator according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the projection display unit 180 includes three light sources 210, an illumination optical system 220, one panel (that is, one one-dimensional optical modulator 230), a relay optical system 240, and a scanner 250. ), A projection optical system 260, a screen 270, and an image control circuit 280. Here, since the illumination optical system 220, the relay optical system 240, and the projection optical system 260 are general components in the projection display unit 180, detailed description thereof will be omitted. In addition, the optical modulator 230 having a single panel has been described. However, this is for convenience of understanding. If the optical modulator having a plurality of panels modulates light corresponding to the one-dimensional image, the technical idea of the present invention is provided. Since the scope of the present invention does not limit the scope of the present invention. In addition, although the light source system 210 having three light sources has been described herein, this is only an exemplary embodiment for describing a method for displaying color (RGB method), and therefore, the number of light sources is not limited to that of the present invention. It does not limit the scope of rights.

Before explaining the structure and operation of the projection display unit 180, the one-dimensional optical modulator used in the present invention will be described with reference to FIGS.

4 is a perspective view of a portion of a piezoelectric diffraction type optical modulator (SOM) according to a preferred embodiment of the present invention, Figure 5 is a portion of a piezoelectric diffraction type optical modulator (SOM) according to another preferred embodiment of the present invention Perspective view.

4 and 5, light including substrates 410 and 510, insulating layers 420 and 520, sacrificial layers 430 and 530, ribbon structures 440 and 540, and piezoelectric elements 450 and 550. The modulation element is shown. That is, the light modulator may be configured to include m (m is any natural number) light modulation elements.

The substrates 410 and 510 are commonly used semiconductor substrates, and the insulating layers 420 and 520 are deposited as an etch stop layer, and an etchant for etching a material used as the sacrificial layers 430 and 530. It is formed of a material with a high selectivity for the etchant, where the etchant is an etching gas or an etching solution.

Here, reflective layers 420 (a) and 520 (a) may be formed on the insulating layers 420 and 520 to reflect incident light.

The sacrificial layers 430 and 530 support the ribbon structures 440 and 540 at both sides so that the ribbon structures 440 and 540 can be floated at regular intervals from the insulating layers 420 and 520, and the spaces are provided at the center. Serves to form.

The ribbon structures 440 and 540 operate up and down to change distances from the insulating layers 420 and 520, thereby causing diffraction and interference of incident light to optically modulate the signal. That is, the electrostatic signals applied to the piezoelectric members 450 and 550 induce the operation of the ribbon structures 440 and 540 and the incident light is modulated to have luminance corresponding to the operation of the ribbon. Here, the shape of the ribbon structures 440 and 540 may be configured as a plurality of ribbon shapes as described above, or may be configured to include a plurality of open holes in the center of the ribbon.

In addition, the piezoelectric members 450 and 550 control the ribbon structures 440 and 540 to move up and down in accordance with vertical contraction / expansion or left and right contraction / expansion in correspondence with the applied voltage.

The reflective layers 420 (a) and 520 (a) are formed to correspond to the holes 440 (b) and 540 (b) formed in the ribbon structures 440 and 540.

For example, when the wavelength of light is λ, no ribbon is applied or a predetermined voltage is applied to the ribbon reflective layers 440 (a) and 540 (a) and the bottom reflective layer formed on the ribbon structures 440 and 540. Assume that the interval between the insulating layers 420 and 520 on which the (420 (a) and 520 (a)) is formed is equal to nλ / 2 (n is a natural number).

Therefore, in the case of zero-order diffracted light (reflected light), the total path difference between the light reflected from the ribbon reflective layers 440 (a) and 540 (a) formed on the ribbon structure and the light reflected from the insulating layers 420 and 520 is nλ. However, constructive interference causes zero-order diffracted light to have maximum luminance. Here, in the case of + 1st and -1st diffraction light, the brightness of light has a minimum value due to destructive interference.

In addition, when a predetermined voltage different from the applied voltage is applied to the piezoelectric members 450 and 550, the ribbon reflective layers 440 (a) and 540 (a) and the bottom reflective layers 420 (a) and 520 formed in the ribbon structure. It is assumed that the interval between the insulating layers 420 and 520 in which (a)) is formed is equal to (2n + 1) λ / 4 (n is a natural number). Therefore, in the case of the zero-order diffracted light (reflected light), the light reflected from the ribbon reflective layers 440 (a) and 540 (a) formed on the ribbon structure and the bottom reflective layers 420 (a) and 520 of the insulating layers 420 and 520. Since the total path difference between the light reflected from (a)) is (2n + 1) λ / 2, the destructive light has minimum luminance due to destructive interference. In the case of the + 1st and -1st diffracted light, the luminance of light has a maximum value due to constructive interference. As a result of this interference, the light modulator can adjust the amount of reflected or diffracted light to load and transmit the signal to the light.

In the above, the distance between the ribbon structures 440 and 540 and the insulating layers 420 and 520 on which the bottom reflective layers 420 (a) and 520 (a) are formed is nλ / 2 or (2n + 1) λ / 4. Although it has been described, it is obvious that various embodiments which can control the intensity of interference by diffraction and reflection of incident light by having various intervals can be applied to the present invention. Hereinafter, the optical modulation device of the type shown in FIG. 4 will be described.

6 is a plan view of a piezoelectric diffractive light modulator (SOM) according to a preferred embodiment of the present invention.

A piezoelectric diffraction type optical modulator (SOM) is an optical modulator capable of controlling the amount of incident light and luminance by changing a distance between a substrate and a ribbon by applying a predetermined voltage to the piezoelectric body.

Referring to FIG. 6, the light modulator consists of m micrometers, where m is any natural number. In detail, the optical modulator includes a first pixel (pixel # 1), a second pixel (pixel # 2),... And m micro mirrors 400-1, 400-2, ..., 400-m, hereinafter referred to as 400, which are responsible for the m-th pixel (pixel #m). In the present invention, since a role of one light modulation element plays a role of a micro mirror for reflection of light, hereinafter referred to as a micro mirror.

That is, the optical modulator is responsible for image data information of the one-dimensional image of the vertical scanning line or the horizontal scanning line (assuming that the vertical scanning line or the horizontal scanning line is composed of m pixels), and each micromirror 400 is It is responsible for any one of m pixels constituting the one-dimensional image (vertical scanning line or horizontal scanning line).

Therefore, the light reflected and diffracted by each micro mirror 400 is projected on the screen as a two-dimensional image by the optical scanning device.

For example, when an image with VGA 640X480 resolution is projected, 480 pixels reflected from 480 vertical pixels are screened through the optical scanning device and this operation is performed 640 times on one side of the optical scanning device. As it happens, one frame of screen with a resolution of 640x480 is generated. The optical scanning device may be a polygon mirror, a rotating bar, a galvano mirror, or the like. The optical scanning device according to an embodiment of the present invention has a shape of a hexagonal column and assumes a case of rotating.

Hereinafter, the light modulation principle will be described based on the first micro mirror that is in charge of the first pixel (pixel # 1), but the same may be applied to other pixels.

In the ribbon structure 440 according to an embodiment of the present invention, two holes 440 (b) -1 are formed and three ribbon reflective layers 440 (a) -1 are formed. Two bottom reflective layers (not shown) are formed in the insulating layer 420 to correspond to the two holes 440 (b) -1. In addition, another bottom reflective layer is formed on the insulating layer 420 corresponding to the portion of the gap between the first pixel (pixel # 1) and the second pixel (pixel # 2). Therefore, the number of ribbon reflective layers 440 (a) -1 and bottom reflective layers per pixel is equal to three. That is, as described above with reference to FIGS. 4 and 5, it is possible to adjust the luminance of modulated light.

7 is a view showing the configuration of one frame projected on the screen according to an embodiment of the present invention.

In FIG. 7A, when the scan is performed by the scanner 250 in the horizontal direction, a direction from the first vertical scan line to the nth vertical scan line is referred to as a forward, and from the nth vertical scan line to the first vertical scan line, FIG. The direction is called backward. Obviously, of course, the opposite may be true. In addition, in FIG. 7B, when the scan by the scanner 250 is performed in the vertical direction, a direction from the first horizontal scan line to the mth horizontal scan line is referred to as a forward, and from the mth horizontal scan line to the first horizontal scan line, FIG. The direction of was called backward.

The two-dimensional display method by the bi-directional scan in the scanner 250 in the vertical and / or horizontal direction is apparent to those skilled in the art, a detailed description thereof will be omitted here.

Referring back to FIG. 2, the light source system 210 includes a red light source 212, a green light source 214, and a blue light source 216 that irradiate three primary colors of light, red light, green light, and blue light, respectively. The three light sources 210 are preferably light sources corresponding to three primary colors of light, but this does not limit the scope of the present invention, and various combinations of light sources having different colors may be possible. The three light sources 210 are preferably laser light sources. In addition, the light source system 210 includes a red light source 212, a green light source 214, and a blue light source 216, and the red light source and the green light source according to a light source control signal. And on-off of the blue light source can be controlled. Here, the light source control signal may be generated by the image control unit 280 to correspond to the image data display command received from the main controller 110 and transmitted to the light source system 210. In addition, when any one of the red light source 212, the green light source 214, and the blue light source 216 is in an on state, the remaining light sources are controlled to be in an off state. For example, when the red light source 212 is activated by the red light source control signal, the remaining green light source 214 and the blue light source 216 may be inactive. In this case, as described above, the red light source control signal may be generated by the image control unit 280 to correspond to the image data display command received from the main controller 110 and transmitted to the light source system 310. This is to prevent the color light from being distorted due to the plurality of light sources being incident on the light modulator 230 because the light modulator 230 is composed of one panel.

Each color light of the three light sources 210 is reflected by the illumination optical system 220 at a predetermined angle and is incident on the one-dimensional light modulator 230.

The one-dimensional light modulator 230 receives color light from any one of the red light source 312, the green light source 314, and the blue light source 316. At the same time, two or more color lights are not incident, and only color light of one color is incident at a time.

As described above, the one-dimensional light modulator 230 generates diffracted light by modulating incident light according to light intensity information of one scan line when projected onto the screen 270. Here, one scanning line means any one of the horizontal scanning lines or the vertical scanning lines among (pixels of the vertical scanning lines) x (pixels of the horizontal scanning lines) constituting one frame of the color image. In the following description, the one-dimensional optical modulator 230 is responsible for any one vertical scan line, but this is not a limitation of the scope of the present invention.

In the one-dimensional optical modulator 230, the MEMS structure illustrated in FIG. 4 may be disposed in parallel by the number of pixels constituting the vertical scan line to cover one vertical scan line. One vertical scan line is a one-dimensional image, and the screen 270 represents a two-dimensional image, and the one-dimensional image is scanned by the scanner 250 to be described later, thereby representing the two-dimensional image.

The one-dimensional optical modulator 230 receives color light not including image data information, and according to the optical modulator control signal received from the image control unit 280 to be described later, the image data information about the corresponding color light and the corresponding vertical scan line ( That is, light intensity information) is loaded on the color light. This process is modulation of color light. That is, the one-dimensional optical modulator 230 is in charge of the panel representing the image data information. Through this, the color light carrying the image data information, that is, the diffracted light, is transmitted to the scanner 250 via the relay optical system 240.

The scanner 250 spreads the diffracted light in space according to the scanner control signal received from the image control unit 280. The projection optical system 360 includes a projection lens, and projects the diffracted light developed in the space by the scanner 250 as a color image on the screen 270.

As described above, the diffracted light developed in the space by the scanner 250 is a one-dimensional image signal indicating one vertical scanning line of any frame of the screen to be expressed, which is modulated by the one-dimensional optical modulator 230.

As the scanner 250 rotates in the horizontal direction, the diffracted light is projected onto a vertical scan line at a predetermined position corresponding to the image signal in the screen 270. When all the image signals of each vertical scanning line are projected in the horizontal direction due to the rotation of the scanner 250, one frame is completed and one screen is completed to be seen as one screen to the human eye.

The scan by the scanner 250 is made in the horizontal direction, and the modulation by the one-dimensional optical modulator 230 is described with respect to each vertical scan line. However, the scan by the scanner 250 is made in the vertical direction. The modulation by the one-dimensional optical modulator 230 may be performed for each horizontal scanning line.

The image control unit 280 receives an image data display command from the main controller 110. The image data display command may include a projection display activation command and image data information, and the image data information may be included in a frame forming one screen. Image data information may be included. That is, as described above, the image data information may include information on the light intensity of red, green, and blue of the pixel by (number of pixels of the vertical scanning line) x (number of pixels of the horizontal scanning line). For example, if the number of pixels of the vertical scanning line is m (natural number) and the number of pixels of the horizontal scanning line is n (natural number), one frame is composed of n first to nth vertical scanning lines or m first to mth horizontal lines. It can be said that it consists of a scanning line.

The image control unit 280 extracts light intensity information regarding red, green, or blue in a predetermined order from the image data information received through the main controller 110, and outputs a corresponding light source control signal to the light source system 210. To send. In addition, the image control unit 280 may transmit an optical modulator control signal corresponding to the image data information to the optical modulator 230 and a scanner control signal corresponding to the scanner 250. Control of the light source system 210, the optical modulator 230, the scanner 250, etc. by the image control unit 280 will be apparent to those skilled in the art, and a detailed description thereof will be omitted herein.

3 is a schematic configuration diagram of a projection display unit using a one-dimensional optical modulator according to another exemplary embodiment of the present invention.

Referring to FIG. 3, the projection display unit 300 using the 1D optical modulator according to another exemplary embodiment of the present invention includes a light source system 310, an illumination optical system 320, three panels 320, and a color combining system 350. , Projection unit 360 and screen 370. That is, unlike the projection display unit described with reference to FIG. 2, this is a three-panel projection display unit 300.

Hereinafter, the operation of the three-panel projection display unit 300 will be briefly described.

The light source system 310 includes a plurality of laser light sources including a red light source 312, a green light source 314, and a blue light source 316, which are three primary colors of light. Each color light in the light source system 310 is incident on each panel 320 through the beam forming lenses 320a and 320b of the illumination optical system 320.

Each of the three panels 330 includes light modulators 332, 334, and 336, and each light modulator 332, 334, and 336 is responsible for one color light. Each incident color light (red light, green light, blue light) is modulated by the light intensity and projected onto the color combining system 350.

The color synthesizing filter 352 of the color synthesizing system 350 synthesizes red, green, and blue light, each of which is modulated by the light intensity, and extracts only signal components by the spatial filter 354.

The projection unit 360 is developed in a space by a scanner 362 (galvanometer mirror in this example) which synchronizes with the image signal, and is projected as a color image on the screen 170 by the projection lens 364.

That is, unlike the one-panel method described with reference to FIG. 2, in the case of the three-panel projection type display unit 300, the red light source 312, the green light source 314, and the blue light source 316 may operate at the same time. Compared to the method, the output speed is faster, but the size of the projection display unit is larger than that of the one-panel method, which has a disadvantage of inhibiting the miniaturization of the portable electronic device 100.

8 is a block diagram of a portable electronic device and a projection display device according to another embodiment of the present invention.

Referring to FIG. 8, the portable electronic device 100 according to an exemplary embodiment of the present invention may include a main controller 810, a wireless communication unit 820, an input unit 830, a storage unit 840, and a camera unit 850. , A multimedia controller 860, a main display unit 870, and an external device input terminal 880. The main controller 810, the wireless communication unit 820, the input unit 830, the storage unit 840, the camera unit 850, the multimedia control unit 860, and the main display unit 870 are the same as described above with reference to FIG. 2. Or similar, detailed description thereof will be omitted.

An external device may be connected to the external device input terminal 880. For example, the projection display device 890 may be connected to the external device input terminal 880 and may be controlled by the main controller 810. The external device input terminal 880 may be in the form of a 24-pin input / output terminal and / or an audio input / output terminal.

The interior of the projection display device 890 is the same as or similar to the projection display unit 180 described with reference to FIG. 3. However, the projection display device 890 may be connected to the portable electronic device 800 through the external device connection terminal 895. For example, the projection display device 890 may perform an operation under the control of the main controller 810 through an external device connection terminal 895.

9 is a configuration diagram of an image control unit according to an exemplary embodiment of the present invention.

9, the image control unit 280 according to an exemplary embodiment of the present invention may include an image corrector 280-1, a light source controller 280-2, a scanner controller 280-3, and an optical modulator controller ( 280-4).

The image corrector 280-1 corrects one or more of the size, color, pixel, and resolution of the projection to be output included in the image data information to correspond to the image correction command. In this case, the image correction command may be generated by the input unit 130 according to a user's selection and received by the image control unit 280 from the main controller 110. The method of correcting the image data information has been described above with reference to FIG. 1, and thus a detailed description thereof will be omitted.

The light source controller 280-2 may generate a light source control signal for controlling the light source system 210. For example, when the image control unit 280 receives the image data information from the main controller 110, the light source controller 280-2 generates a light source control signal corresponding to the image data information and outputs it to the light source system 210. can do. In addition, the scanner controller 280-3 generates a scanner control signal for controlling the scanner 250, and the optical modulator controller 280-4 generates an optical modulator control signal for controlling the optical modulator 230. .

That is, the image control unit 280 includes the image corrector 280-1 to perform various corrections (eg, color correction, size correction, or resolution correction) of the image to be output by the image control unit 280. The overall performance of the portable electronic device due to the overload of the main controller 110 can be prevented.

In addition, it is obvious that the technical idea that the image control unit 280 includes the image corrector 280-1 may be equally applied to the projection display device 890 described above.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, the portable electronic device according to the present invention has an effect of providing a more improved processing speed and output speed by including a projection display unit of a 1D image processing method.

In addition, the portable electronic device according to the present invention has an effect of miniaturizing the terminal by providing a projection type display unit for processing a one-dimensional image.

In addition, since the portable electronic device according to the present invention can correct image data inside the projection display unit, it is possible to prevent the overload of the main control unit so as to prevent the deterioration of the overall function of the portable electronic device.

Claims (6)

In a portable electronic device comprising a main control unit and a projection display unit, The main controller outputs an image data display command including image data information according to a user's selection to the projection display unit, The projection display unit projects an optical signal corresponding to the image data display command to implement a 2D image. The projection display unit, A light source system for sequentially irradiating light according to the light source control signal; A one-dimensional optical modulator for modulating the light which is sequentially input when an optical modulator control signal is input to generate and irradiate the optical signal that is a corresponding one-dimensional line image; A scanner configured to scan the optical signals sequentially inputted in both directions, and to project two-dimensional images by inputting a scanner control signal; And When the image data display command is input from the main controller, the light source control signal, the optical modulator control signal, and the scanner control signal corresponding to the image data display command are output to the light source system, the optical modulator, and the scanner, respectively. Portable electronic device comprising a projection display unit comprising an image control unit. The method of claim 1, The image control unit includes an image corrector, The main controller outputs an image correction command generated by a user's selection to the image corrector, And the image corrector corrects the image data information according to the image correction command. The method of claim 2, The image corrector is configured to correct one or more of information on the size, color, pixel, and resolution of the image data among the information included in the image data. Portable electronic devices included. A projection type display apparatus for realizing a two-dimensional image by projecting an optical signal corresponding to image data received from a connected external device, An external device connection terminal connected to the external device to receive the image data from the external device; A light source system for sequentially irradiating light according to the light source control signal; A one-dimensional optical modulator for modulating the light which is sequentially input when an optical modulator control signal is input to generate and irradiate the optical signal that is a corresponding one-dimensional line image; A scanner configured to scan and project the optical signals sequentially inputted in both directions when the scanner control signal is input to implement a two-dimensional image; And And an image control unit for outputting the light source control signal, the optical modulator control signal, and the scanner control signal to the light source system, the optical modulator, and the scanner, respectively, when the image data is input. The method of claim 4, wherein The image control unit further includes an image corrector, And the image corrector corrects the image data information according to the image correction command when an image correction command is input from the external device. The method of claim 5, And the image corrector corrects one or more of information on a size, color, pixel, and resolution of the image data among the information included in the image data. .

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