KR100749481B1 - Device capable of non-contact function selection and method thereof - Google Patents

Abstract

A device for conducting a non-contact function and a method therefor are provided to enable a user to remotely control a menu function by using a camera, thus the user can more easily and quickly select a desired function. A light source unit(140) emits light to the outside. A camera unit(120) generates and outputs an image signal corresponding to an external image. An image data generator generates image data corresponding to the image signal. An identifier detects the location of a detection area formed by light inputted by being reflected on an indicator unit of the emitted light from the image data of each frame unit, and recognizes movement trace of the detection area by comparing more than two consecutive frames to generate equivalent change information, then outputs the generated information. One of plural information items displayed on a display(110) is displayed as being selected for the change information or a pointer moving by the change information is displayed.

Description

Device capable of non-contact function selection and method

1 is a block diagram of a mobile communication terminal according to an embodiment of the present invention.

2 is a view showing a state of appearance and a contactless function mode of a mobile communication terminal according to an embodiment of the present invention.

3 to 5 illustrate the principle of operation of a contactless function mode according to the invention.

6A and 6B illustrate a state of use of appearance and contactless function selection of a mobile communication terminal according to another embodiment of the present invention.

7 is a flowchart illustrating a process of executing a contactless function mode in a mobile communication terminal according to an embodiment of the present invention.

8 is a diagram illustrating an image mapping method between image data and a menu icon display area according to an embodiment of the present invention.

FIG. 9 is a table illustrating an image mapping program implementing the image mapping method of FIG. 8. FIG.

FIG. 10 is a diagram illustrating a recognition method of a contactless selected function using the image mapping method of FIG. 8. FIG.

<Description of the symbols for the main parts of the drawings>

100: mobile communication terminal

110: display unit

111: Menu icon display area

120: camera unit

125: image processing unit

130: key input unit

140: light source

150: control unit

155: memory section

The present invention relates to a method of selecting a function using a camera, and more particularly, to an apparatus and a method capable of selecting a contactless function using a camera.

With the recent rapid development of electronics and communication engineering, users can use various functions such as internet search, video communication, video or music playback, and satellite broadcasting by using digital home appliances such as computers and digital cameras or mobile communication terminals. I can enjoy it. Accordingly, in order for a user to enjoy more various functions, a key input method capable of efficiently selecting an intended function is desired.

Conventionally, the most widely used method of selecting a function is a method of directly pressing a plurality of key buttons of a key pad included in various devices. That is, the user presses the menu key on the keypad and then moves the direction key (or the cursor movement key) several times to move to the corresponding menu icon (Icon) displayed on the LCD screen, and the menu icon of the moved position using the selection key. You can use this function by selecting.

However, the conventional function selection method has a problem of requiring several button operations until the user finds the intended function. In particular, although the functions frequently used in practice are limited as compared to the vast functions of the recent digital devices, it is cumbersome for the user to go through the complicated process as described above every time to select the corresponding functions. As a result, the conventional function selection method requires a lot of time and effort to select a function for users who are poor in button and menu operation.

In addition, the conventional method of selecting a function must be provided with a key button for the function selection requires a separate mold operation for each key button. Therefore, there is a problem that the manufacturing process of the digital device becomes complicated and the manufacturing cost thereof increases. In addition, due to the fixed area occupied by the keypad, there is a problem in that the size and design of the digital device are limited.

In addition, a touch screen method through a display unit may be used as a function selection method, but there is a problem in that manufacturing cost increases due to mounting of a display unit capable of a touch screen.

Accordingly, it is an object of the present invention to provide an apparatus and method capable of selecting a non-contact function, which enables a user to easily and quickly select an intended function by remotely controlling a menu function using a camera.

Another object of the present invention is to provide an apparatus and a method capable of selecting a contactless function that may cause an interest to a user, away from the existing monotonous function selection method through a key button.

Still another object of the present invention is to provide an apparatus and method capable of selecting a contactless function capable of maximizing component utilization by allowing the provided camera to be used universally.

It is still another object of the present invention to provide a device and method capable of selecting a contactless function that can reduce the cost of manufacturing a keypad and increase the spatial utilization of a digital device, thereby minimizing size and design diversity.

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

According to an aspect of the present invention for achieving the above object, there is provided an image signal processor, an application processor and a digital processing device for performing a contactless function.

According to an embodiment of the present invention, a digital device having an imaging function includes a light source unit emitting light to the outside; A camera unit generating and outputting an image signal corresponding to an external image; An image data generator configured to generate image data corresponding to the image signal; And detecting a position of a detection area formed by the light reflected and input to the indicating means among the emitted light from the image data in each frame unit, and comparing the two or more consecutive frames to recognize the movement trajectory of the detection area. It may include an identification unit for generating and output corresponding change information. Herein, any one of the plurality of information items displayed on the display unit may be displayed as selected in the change information, or a pointer which is moved corresponding to the change information may be displayed.

The identification unit detects an area of the detection area in each frame unit, compares two or more consecutive frames, and generates and outputs change information corresponding to an area change of the detection area.

When the area of the detection area changes in an increasing direction, the change information may be recognized as an execution start command of the selected information item.

When the area of the detection area changes in a decreasing direction, the change information may be recognized as a deselection command of the selected information item.

The area of the detection area may be an area of a figure formed by an outline of the detection area or the number of pixels included in the detection area.

The light source unit may emit light having a wavelength or luminance to the outside. The identification unit may detect a position of the detection area in the image data using the wavelength or the luminance.

The digital processing apparatus may further include a key input unit including one or more key buttons. Here, the light source unit, the camera unit, and the identification unit may be started to be driven by input of a preset key button.

The image data may be YUV data or RGB data.

According to another preferred embodiment of the present invention, an image signal processor includes: an image data generator configured to generate image data corresponding to an image signal input from an image sensor; And detecting a position of a detection region formed by a predetermined light component in the image data in each frame unit, and comparing two or more consecutive frames to recognize a movement trajectory of the detection region to generate corresponding change information. It may include an identification unit for outputting. Here, the detection area may be an area formed by light that is reflected and input to the indicating means among the light emitted to the outside by the light source unit.

The change information may function as an input signal for controlling the digital processing device including the image signal processor.

The identification unit detects an area of the detection area in each frame unit, compares two or more consecutive frames, and generates and outputs change information corresponding to an area change of the detection area.

When the area of the detection area changes in an increasing direction, the change information may be recognized as an execution start command of the information item selected in the change information among a plurality of information items displayed on the display unit of the digital processing apparatus.

When the area of the detection area changes in a decreasing direction, the change information may be recognized as a command for deselecting an information item selected for the change information among a plurality of information items displayed on the display unit of the digital processing apparatus.

The light source unit may emit light having a wavelength or luminance to the outside. The identification unit may detect a position of the detection area in the image data using the wavelength or the luminance.

According to another preferred embodiment of the present invention, an application processor includes: a receiver configured to receive image data generated to correspond to an external image signal from an image signal processor; And detecting a position of a detection region formed by a predetermined light component in the image data in each frame unit, and comparing two or more consecutive frames to recognize a movement trajectory of the detection region to generate corresponding change information. It may include an identification unit for outputting. Here, the detection area may be an area formed by light that is reflected and input to the indicating means among the light emitted to the outside by the light source unit.

The change information may function as an input signal for controlling a digital processing device including the image signal processor and the application processor.

The identification unit detects an area of the detection area in each frame unit, compares two or more consecutive frames, and generates and outputs change information corresponding to an area change of the detection area.

When the area of the detection area changes in an increasing direction, the change information may be recognized as an execution start command of the information item selected in the change information among a plurality of information items displayed on the display unit of the digital processing apparatus.

When the area changes in a decreasing direction, the change information may be recognized as a command for deselecting an information item selected for the change information among a plurality of information items displayed on the display unit of the digital processing apparatus.

The light source unit may emit light having a wavelength or luminance to the outside. The identification unit may detect a position of the detection area in the image data using the wavelength or the luminance.

According to another aspect of the present invention for achieving the above object, there is provided a method of performing a contactless function mode and a recording medium on which a program for performing the method is recorded.

According to an embodiment of the present invention, a method in which a digital device having an imaging function performs a contactless function mode includes: emitting light to the outside by a light source unit; Generating and outputting an image signal corresponding to an external image by the camera unit; Generating image data corresponding to the image signal by an image data generator; And an identification unit detects a position of a detection area formed by light reflected and input to the indicating means among the emitted light from the image data in each frame unit, and compares two or more consecutive frames to determine a movement trajectory of the detection area. Recognizing may include generating and outputting the corresponding change information. Herein, any one of the plurality of information items displayed on the display unit may be displayed as selected in the change information, or a pointer which is moved corresponding to the change information may be displayed.

The identification unit may further perform the step of detecting the area of the detection area in each frame unit, comparing two or more consecutive frames to generate and output change information corresponding to the area change of the detection area.

When the area of the detection area changes in an increasing direction, the change information may be recognized as an execution start command of the selected information item.

When the area of the detection area changes in a decreasing direction, the change information may be recognized as a deselection command of the selected information item.

The area of the detection area may be an area of a figure formed by an outline of the detection area or the number of pixels included in the detection area.

The light source unit may emit light having a wavelength or luminance to the outside. The identification unit may detect a position of the detection area in the image data using the wavelength or the luminance.

The method of performing the contactless function mode may be performed prior to the step of inputting a predetermined key selection signal to start driving of the light source unit, the camera unit, and the identification unit.

The image data may be YUV data or RGB data.

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 describing the drawings, similar reference numerals are used for similar elements. 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 said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but other components may be present in the middle. It should be understood. 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, and the same or corresponding components will be denoted by the same reference numerals regardless of the reference numerals and redundant description thereof will be omitted.

Apparatus and method for selecting a contactless function according to the present invention can be applied to any digital device having a camera function. For example, the present invention can be used in digital home appliances such as TVs, refrigerators, digital cameras, computers, and various digital communication devices. However, the following description will focus on the mobile communication terminal which is one of the representative digital devices.

1 is a block diagram of a mobile communication terminal according to an embodiment of the present invention. Here, each block illustrated in FIG. 1 is merely shown separately for each function performed by the mobile communication terminal 100 according to the present invention for convenience of description. Therefore, it is apparent that two or more of each block may be integrated and implemented as a single chip, and may be implemented in more detail as necessary.

Referring to FIG. 1, the mobile communication terminal 100 according to the present invention includes a display unit 110, a camera unit 120, an image processor 125, a key input unit 130, a light source unit 140, a controller 150, The memory unit 155 is included. Although not shown in FIG. 1, the mobile communication terminal 100 according to the present invention may further include a radio unit for performing a wireless communication function and a handset unit for input and output of voice data.

The key input unit 130 provides a user interface for a user to input text and numeric data. The key input unit will be described with reference to FIG. 2. The movement trajectory and / or the light of the solid state function according to the present invention (that is, the light emitted from the light source unit 140, reflected by the subject (for example, the finger end) and input to the camera unit 120). A key button and / or a menu item for the execution of a control command using the formation area may be previously designated. The user may cause the mobile communication terminal 100 to enter the contactless function mode by selecting a corresponding key button and / or menu item. The light source unit 140 enters the contactless function mode. The camera unit 120, the image processing unit 125, and the like are controlled to operate accordingly.

The camera unit 120 may include a lens unit, an image sensor unit, and a signal processor. The lens unit (not shown) collects the light reflected by the subject, and the image sensor unit (not shown) converts the optical image signal collected by the lens unit into an electrical image signal and outputs it. The signal processor (not shown) converts the electrical image signal input from the image sensor unit into digital image data and outputs the digital image data.

Here, a charge coupled device (CCD) sensor, a complementary metal-oxide semiconductor (CMOS) sensor, or the like may be used as the image sensor, and a signal processor may be a digital signal processor (DSP) or the like.

The image processor 125 performs various image processing on image data input from the camera unit 120 or image data stored in the memory unit 155 to be described later. For example, the image processor 125 may compress and restore the image data, adjust the size or brightness (luminance) of the image data, interpolation between the pixels of the image data, and gamma correction the image data. Image processing such as color correction, format conversion for converting RGB image data into YUV image data, or the like. The image processor 125 may be integrated with the above-described signal processor and included as a component of the camera 120.

The image processing unit 125 is formed by reflecting the light irradiated by the light source unit 140 using the RGB image data or YUV image data by the indicating means (for example, a finger placed at a predetermined distance in front of the lens unit). It may further include an identification unit (not shown) for identifying a change in the movement trajectory or the formation area of the region (hereinafter referred to as 'detection region'). When the change in the detection area is identified by the controller 150, it is obvious that the identifier may be included in the controller 150. The detection area may be recognized by detecting only a wavelength component of light emitted from the light source unit 140 in the image data of each frame processed by the image processor 125. To this end, the wavelength of the light emitted from the light source unit 140 should be predetermined according to the type of light source provided, and the wavelength band for detection may be predetermined.

Identification of the detection area change may be performed while the mobile communication terminal 100 is operated in a preview mode. The preview mode refers to an execution mode in which an image signal input in real time through the camera unit 120 is displayed as visual information through the display unit 110. After checking the visual information displayed on the display unit 110 in the preview mode, the user selects a predetermined button (for example, a shutter button) to generate encoded image data corresponding to an external image and generates a memory unit ( 155) (ie, execution of Capture mode). The reason for the detection of the detection area change in the preview mode is that not only the image information of the current frame but also the image information of the previous frames to be compared are required to identify the movement trajectory or the change of the formation area of the detection area. to be. To this end, the image processor 125 may include a memory for storing image information about each frame (or analysis information analyzing a characteristic (eg, position, size, etc.) of a detection area in the corresponding frame). Can be.

The image processor 125 may be divided into an image signal processor and a back end chip. The image signal processor may convert the image signal input from the camera unit 120 into YUV data and output the YUV data to the back end chip. The backend chip may convert the input YUV data into JPEG or BMP by using a predetermined encoding method and store the same in the memory unit 155 or decode the image data stored in the memory unit 155 to be displayed on the display unit 110. have. The backend chip can also perform functions such as zooming in, zooming out, and rotating the image. Of course, the function of generating image data by a predetermined encoding method may be included in the image signal processor. The above-described identification unit may be included in the image signal processor or the back end chip.

The light source unit 140 emits light of a specific wavelength to the outside by a specific control signal (for example, a control signal for initiating the contactless function mode) of the controller 150. The wavelength of the light emitted from the light source unit 140 may be predetermined. Through this, by using a method such as using a filter that transmits only the light component corresponding to the wavelength, it is possible to facilitate the recognition of the detection region. Light emitted from the light source unit 140 is preferably determined to have a harmless characteristic to the human body.

Light emitted by the light source unit 140 may be reflected by the indicating means (for example, a user's finger) that is a subject and input to the camera unit 120. To this end, the light irradiation angle of the light source unit 140 is preset to an angle at which the irradiated light is reflected by the indicating means and input through the lens unit of the camera unit 120, or the user uses the key input unit 130 or the like to emit light. It can be implemented to adjust the irradiation angle. It is apparent that various light emitting devices (eg, light emitting diodes (LEDs), etc.) may be used as the light source unit 140 without limitation. The light source unit 140 may terminate light emission by a specific control signal (eg, a control signal for terminating the contactless function mode) of the controller 150.

The display unit 110 displays various data including an operation state of the mobile communication terminal 100, a character (or numeric data) input through the key input unit 130, image data stored in the memory unit 155 to be described later, and the like. Display. The display unit 110 may be implemented by, for example, a liquid crystal display (LCD), organic light emitting diodes (OLED), or the like. The display unit 110 may further include a separate display memory for temporarily storing the various data for display.

The light source unit 140 and the display unit 120 described above will be described in detail later with reference to FIG. 2.

The memory unit 155 may store various input data including image data, various programs necessary for the overall operation or function driving of the mobile communication terminal, data generated by program execution, and the like. In particular, the memory unit 155 according to the present invention may store an image mapping program for analyzing a function selected by a user in a non-contact state. The memory unit 155 may be implemented as an integrated memory or divided into a plurality of memory units (eg, a program memory, a data memory, an image memory, etc.).

The controller 150 controls the overall operation of the mobile communication terminal 100. For example, the controller 150 may control various data such as input data input through the key input unit 130 or image data stored in the memory unit 155 to be displayed through the display unit 110. have.

In addition, the controller 150 may control the imaging of the camera unit 120, the image processing of the image processor 125, and the operation of the light source unit 140. For example, the controller 150 may include a camera unit 120, an image processing unit 125, and the like so as to correspond to the execution or completion of the contactless function mode when a key button for designating entry / release to the contactless function mode is input. The operation of the light source unit 140 and the like can be controlled.

In addition, the controller 150 controls the camera unit 120, the image processing unit 125, and the light source unit 140 to be driven periodically (for example, at 0.1 second intervals) to check whether the contactless function mode is performed. If a valid movement (eg, horizontal movement or vertical movement) of the indicating means is detected through the camera unit 120 or the like, the contactless function mode may be continuously performed thereafter. In addition, if a valid movement is not detected, the operation may be performed in the sleep mode (sleep mode or standby) until the next time point of confirmation. After the operation of the contactless function mode is started, a check is performed every predetermined confirmation period (for example, every 10 seconds) to determine whether to continue the operation of the mode. In addition, it may be controlled to terminate the contactless function mode. Of course, it is obvious that the operation of the contactless function mode which is automatically started may be terminated by the input of a predetermined key button.

In addition, as described above, when the identification unit is included in the control unit 150, the control unit 150 determines the change of the detection area by using the sequential image data processed by the image processing unit 125, the contactless function The operation of the corresponding component may be controlled such that a control operation corresponding to the user control command inputted by the mode (for example, menu selection, moving the position of the pointer displayed on the display unit 110, etc.) is performed. have. For example, the controller 150 may load an image mapping program stored in the memory unit 155 and recognize a menu function corresponding to a position selected by the user (ie, the position of the detection area) using the image mapping program. have.

Of course, recognition information (eg, information about a change in the movement trajectory or the formation area) of the change in the detection area may be recognized by the image processor 125 so that a corresponding control signal may be input to the controller 150. Is as described above.

A method of recognizing a contactless selected function of the controller 150 or the image processor 125 using the image mapping program will be further described with reference to FIGS. 8 to 10.

2 is a diagram illustrating a state of appearance and a contactless function mode of a mobile communication terminal according to an embodiment of the present invention.

Although FIG. 2 illustrates a foldable mobile communication terminal 100, the mobile terminal 100 may have various forms (eg, flip type, slide type, etc.).

In addition, although FIG. 2 illustrates a case in which one light source unit 140 is provided on each side of each of the camera unit 120 (ie, the lens unit exposed to the outside), the number of light source units 140 that can be provided is not limited.

In some cases, the light source unit 140 may be omitted. For example, the indicator means (for example, indicator means implemented in the stylus pen type, etc.) having a light emitting portion capable of emitting light of a specific wavelength or luminance (hereinafter referred to as "wavelength") at one end If it is possible to input the control command in the contactless function mode according to the present invention by using the light source unit 140 may be omitted. This means that the position and / or range of the pixel corresponding to the wavelength of light emitted from the light emitting unit provided in the indicating means in the image data of each frame input through the camera unit 120 and processed by the image processing unit 125 is determined. This is because the change in the detection area can be identified by analyzing. However, hereinafter, the light source unit 140 will be described based on a case where the mobile communication terminal 100 is separately provided.

Here, the position where the camera unit 120 is provided may be different from the position illustrated in FIG. 2. In addition, the camera unit 120 may be used in combination for general image capturing in addition to the purpose of executing the contactless function mode according to the present invention. In this case, it may be necessary to distinguish whether the operation of the camera unit 120 or the image processing unit 125 is for the purpose of executing the contactless function mode or for general image capturing. This allows the image processing unit 125 to perform only an operation for recognizing a change in the detection area without having to perform all processing for displaying the preview image on the display unit 110 to suppress unnecessary power waste or processing efficiency reduction. It is to make it possible. To this end, the controller 150 may provide a control signal corresponding to what purpose an image signal currently input to the camera unit 120 and / or the image processor 125 is used. For example, when a user instructs execution of a contactless function mode, a specific control signal corresponding thereto is transmitted to the camera unit 120 and / or the image processing unit 125 so that general image capturing (eg, preview mode, capture) is performed. Contactless function mode can be executed. Similarly, when the user instructs the general image capturing, the specific control signal is transmitted to the camera unit 120 and / or the image processing unit 125 so as not to perform a series of processes for analyzing the detection area and recognizing the change. By doing so, unnecessary power waste or processing efficiency reduction can be suppressed. However, the following description will focus on the functions of the camera unit 120 and / or the image processing unit 125 when performing the contactless function mode.

2, the mobile communication terminal 100 according to an exemplary embodiment of the present invention includes a display unit 110, a camera unit 120, a key input unit 130, and a light source unit 140.

The light source unit 140 emits light of a specific wavelength to the outside. The light emitted by the light source unit 140 is reflected by the indicating means 200 (for example, the fingertip of the user), and the reflected light is input through the lens unit of the camera unit 120. Therefore, as described above, the light irradiation angle of the light source unit 140 is set to an angle at which the light reflected by the indicating means spaced apart from the mobile communication terminal 100 by a predetermined distance can be input through the camera unit 120. desirable.

Here, the light source unit 140 may be controlled to operate only when there is an instruction by the controller 150. For example, the user selects a predetermined button among the key buttons provided in the key input unit 130 (for example, presses the 'menu' button 131 or the side key 132 for a predetermined time) or a predetermined menu. When instructing execution of the contactless function mode by selecting an item or the like, the controller 150 may control the light source unit 140 to be turned on. In addition, when the user instructs to end the contactless function mode in a similar manner, the controller 150 may control the light source unit 140 to be turned off. As a result, the light source unit 140 is always turned on to prevent unnecessary consumption of the battery that may be generated by emitting light.

In addition, the controller 150 may control the imaging function of the camera unit 120 in the same manner. That is, when a general image capturing function is executed (that is, execution of the preview mode or the capture mode), the controller 150 may control the analysis of the detection area and the change recognition operation by the image processor 125 or the identification unit not to be performed. Can be.

Of course, when the mobile communication terminal 100 according to the present invention is provided with a separate motion recognition sensor (for example, a motion sensor, etc.) may be used to select a contactless function mode. That is, when the user takes a predetermined predetermined motion (for example, shaking his hand twice within 1 second) in front of a predetermined interval of the motion recognition sensor, the motion recognition sensor detects this and transmits a detection signal to the controller 150. To pass. In this case, the controller 150 may control the operation of the light source unit 140, the camera unit 120, and / or the image processor 125 by determining that the user selects the contactless function mode based on the transmitted detection signal. .

However, hereinafter, the selection of the contactless function selection mode is selected through the 'menu' button of the key input unit 130, and the light source unit 140 and the camera unit 120 operate only when the contactless function mode is selected. It is assumed to be described. Of course, the identification unit that performs detection region analysis and change recognition included in the image processor 125 or the controller 150 may be controlled to operate only when the contactless function mode is executed. Hereinafter, the case where the identification unit is included in the image processing unit 125 will be described.

The camera unit 120 generates and outputs an image signal corresponding to an external image in real time. The image signal is input to the image processor 125 and is converted into an image data format for generating recognition information (eg, information about a change in the movement trajectory or the formation area) of the change in the detection area. The converted image data format may be any one of YUV data, RGB data, and the like. The identification unit recognizes the detection area using the converted image data, recognizes the difference between the current frame and the previous frame, and generates recognition information (eg, information about a change in the movement trajectory or the formation area) of the change and the control unit. Enter 150. The above-described detection area may be recognized using image data input in real time in the preview mode form, or may be recognized using image data photographed continuously (capture mode form). However, in the latter case, processing speed may be slowed because photographed image data (eg, image data encoded according to a predetermined compression standard such as JPEG, MPEG, etc.) corresponding to an external image should be generated.

The key input unit 130 provides a user interface for a user to input text and numeric data. In addition, as described above, the user may set entry / release to the contactless function mode by using a predetermined key button of the key input unit 130. For example, the key buttons for designating entry / release into the contactless function mode may be previously designated to be different from each other. Of course, the key button for designating the entry / release to the contactless function mode may be designated as the same key button and may be alternately used as entry or release according to the number of inputs. It may also be preset to operate in the contactless function mode only while the predetermined button is being pressed. In addition, as described above, the entry / release of the contactless function mode may not be determined by pressing a predetermined key button but may be determined by the control of the controller 150.

The mobile communication terminal 100 according to the present invention selects a menu item (for example, each menu item illustrated on the screen 111 of FIG. 2) displayed on the display unit 110 using the contactless function mode and starts execution. As illustrated in FIG. 2, various function buttons (for example, a telephone call button, an internet access button, etc.) and / or a direction key button for moving a menu are omitted from the keypad as illustrated in FIG. 2. Can be.

However, to provide convenience to a user or to perform a function (for example, turn-on of a power source of a mobile communication terminal) that cannot be recognized through execution of a contactless function mode according to the present invention. Of course, some necessary function buttons can be included in the keypad. That is, the configuration or form of the key input unit 130 according to the present invention is a problem to be determined in consideration of the user's request, convenience of function selection, design efficiency of the mobile communication terminal, and the like, in addition to the form illustrated in FIG. It is obvious that various modifications are possible. For this reason, even in the case of the key input unit 130 shown in FIG. 2, some function buttons (for example, the 'menu' button 131 and the 'power' button 133) in addition to the buttons for inputting the alphanumeric data. It is illustrating the form provided.

As described above, the mobile communication terminal 100 capable of executing the contactless function mode according to the present invention can be removed or used for other purposes as long as the function button or the like existed. You will be able to. Of course, it is obvious that various omitable function buttons may be included in the keypad for user convenience.

In addition, when the user instructs execution of the contactless function mode, the display unit 110 according to the present invention displays all or part of the menu icons on the screen (hereinafter, 'menu icon display area 111'). '). For example, when the user instructs execution of the contactless function mode by selecting a predetermined button or menu item of the key input unit 130, the initial screen displayed through the display unit 110 displays the menu icon illustrated in FIG. 2. The display may include a screen including the region 111. Of course, it is obvious that the screen itself including the menu icon display area 111 may be used as the initial screen or the configuration method of the initial screen may be variously modified and applied. In the following description, it is assumed that the menu icon display area 111 is displayed through the entire display unit 110 when the contactless function mode is executed.

In addition, the menu icon display area 111 may display all menu icons designated to individually execute all the functions of the mobile communication terminal, but are divided into nine divided areas as illustrated in FIG. 2 below. Assume that As described above, when the menu icon display area 111 is divided into nine division areas as illustrated in FIG. 2 to display a menu icon corresponding to each function, the user may frequently use 9 of the various functions included in the mobile communication terminal. It may be possible to select and display four functions.

Therefore, in the mobile communication terminal 100 capable of executing the contactless function mode according to the present invention, the menu icon display area 111 displayed on the display unit 110 is displayed with preset menu icons or a menu selected by the user. Icons may be displayed. For example, it may be possible to select menu icons by providing a button for changing a menu icon through a space occupied by the key input unit 130 or a separate space, or by using a key button that is already provided for the purpose. will be.

3 to 5 illustrate the operating principle of the contactless function mode according to the present invention. 3 to 5 illustrate a process of allowing a user to execute the contactless function according to the present invention by using the indicating means 200 after the execution of the contactless function mode by the user.

Here, the object (object) that can be used as the indicating means 200 is not limited, it is sufficient to reflect the light emitted from the light source unit 140 and input to the camera unit 120. However, hereinafter, it is assumed that the indicating means 200 is a user's finger. 3 and 4 separately illustrate only the camera unit 120 among devices capable of selecting a contactless function according to the present invention for convenience of description.

After instructing the user to execute the contactless function mode, the user places a finger in front of the camera unit 120 as shown in FIG. 3. In this case, light of a specific wavelength emitted from the light source unit 140 is reflected by the user's finger and input to the camera unit 120. The optical image information input to the camera unit 120 is converted into an image signal and input to the image processor 125. The image processor 125 converts the input image signal into image data for analyzing the detection area and recognizing the change. The converted image data may be any one of YUV image data, RGB data, and the like. The view angle of the camera unit 120 and the light emission angle of the light source unit 140 may be predetermined. For example, the view angle of the camera unit 120 and the light emission angle of the light source unit 140 may be set to 120 degrees, respectively. Of course, the view angle and the light emission angle can be variously modified.

At this time, the light reflected by the finger among the light of the specific wavelength emitted from the light source unit 140 forms an image on the lens unit, and the area formed by the reflected light is distinguished from other parts of the input image (for example, For example, wavelengths or luminances differ). By recognizing the detection area formed by the light reflected from the image data of each frame, it is possible to recognize the change information (for example, the movement trajectory and / or the formation area, etc.) of the detection areas between the frames sequentially. Therefore, the detection area may be formed to correspond to the movement trajectory and / or the movement direction of the finger.

For example, the identification unit may specify a detection area and recognize change information of the detection area between each frame by performing a filtering process such that only an area of a specific wavelength is detected. Alternatively, the identification unit may identify a detection area by detecting a region having a specific luminance component among the image data of each frame and recognize change information of the detection region between each frame. The effective range of the wavelength or luminance for specifying the detection region may be specified in advance, and the detection region may be specified by recognizing the positions of pixels corresponding to the wavelength component or the luminance component within the range.

Here, the movement trajectory of the detection area may be determined using, for example, how the center point of the detection area formed by the reflected light is changing in each frame. In addition, the formation area of the detection area may be determined using, for example, an area of a figure formed as an outline of the detection area in the image data of each frame, or may be determined using the number of pixels included in the detection area.

If the formation area of the above-described detection region is different between frames, it can be recognized as a press / release. For example, in a state in which one menu item is expanded and displayed on the display unit 110 (for example, 'telephone function' of FIG. 2) or when the pointer indicates one menu item, the area of the detection area is increased. If it is increased within a short time (that is, the finger is moved toward the lens in a short time), the corresponding menu item may be recognized as selected (pressed). Alternatively, the area of the detection area decreases within a short time in a state in which one menu item is expanded and displayed on the display unit 110 (for example, 'telephone function' of FIG. 2) or the pointer indicates a menu item that is already selected. When the small (ie, the finger is moved in the opposite direction of the lens portion in a short time), it can be recognized that the selection of the corresponding menu item is released (released). The increase or decrease in the formation area of the detection area can be determined by comparing the formation area calculated in units of frames between successive frames. However, for accuracy of judgment, it may be recognized as being pressed or released only when the increase or decrease is continuously recognized in several consecutive frames.

In the case of FIG. 4, it can be seen that the user's finger is located closer to the lens unit of the camera unit 120 as compared to FIG. 3. Assuming that the position of the user's finger has moved from the position of FIG. 3 to the position of FIG. 4, the detection area formed by the light reflected by the user's finger will gradually increase in each frame. In this case, the identification unit generates the corresponding recognition information and inputs it to the controller 150. The controller 150 recognizes that the selected menu item is selected so that a function (or application) corresponding to the menu item is driven. Can be. However, when the user uses the contactless function mode with the finger away from the lens part, the position of the finger may be shaken upward or downward at a predetermined interval. Can be set. Here, the selection range may be preset by the manufacturer at a predetermined distance in front of the camera unit 120. In this way, the user may select or execute the selected menu item by performing an operation such as pressing a virtual key button implemented above the lens unit of the camera unit 120.

In this case, the controller 150 determines whether the user selects the contactless function by comparing the formation area of the detection area according to the position of the finger in each input image frame. That is, the controller 150 may recognize that the user intends to select an arbitrary menu item or icon when the area of the area occupied by the finger in the input image gradually increases in the order of the respective image frames.

The principle of the contactless function selection according to the present invention will become more apparent from the description of FIG. 5 below.

Referring to FIG. 5, reference numeral 500 denotes a point of a user's finger point for convenience of description. Reference numerals 510 and 520 denote horizontal movements of the fingertips by the user, and reference numeral 530 denotes vertical movements of the fingertips. Of course, in addition to the finger end may be rotated (clockwise and / or counterclockwise), the description thereof will be omitted.

Here, horizontal movement (including rotation movement) refers to all movement loci of the user's fingertips that are moved on a constant (or within an error range) vertical distance from a plane provided with the lens portion of the camera unit 120. it means. Therefore, in FIG. 5, only the left and right movements (reference number 510) and the up and down movements (reference number 520) are illustrated as horizontal movements of the fingertips. And encompassing the direction, of course.

In addition, the vertical movement refers to an operation of the user to move the finger end closer or farther from the plane provided with the lens unit of the camera unit 120. In other words, the vertical movement means that the user takes an operation of pressing or releasing a virtual key button for selecting a function existing in a space within a selection range in front of the camera unit 120.

The movement trajectory or the formation area according to the horizontal movement and the vertical movement of the finger end is interpreted using image data corresponding to an external image continuously input through the camera unit 120. That is, the identification unit may recognize a change in the movement trajectory and the formation area of the detection area by analyzing image data corresponding to each frame which is continuously input. As described above, for example, the center point of the detection area may be used for the movement trajectory analysis, and the area of the figure formed by the outline or the number of pixels included in the detection area may be used for the analysis of the formation area.

In this case, the information display state of the display unit 110 may be changed and displayed according to the movement trajectory of the recognized finger end. For example, when the contactless function mode according to the present invention is started, when a pointer similar to a mouse pointer is displayed on the display unit 110, the pointer may be moved and displayed to correspond to the movement trajectory of the recognized detection area. In addition, when the selected menu item is relatively enlarged and displayed as illustrated in FIG. 2, the menu item corresponding to the movement trajectory of the recognized detection area is relatively enlarged to display (for example, the detection area is moved to the left side). If it is recognized, the menu item located on the left side may be enlarged and displayed. Of course, the display method of the menu item corresponding to the movement trajectory of the detection area may be varied, for example, such that the color or font size is changed or flickered.

Accordingly, the user may select the menu icon by horizontally moving or rotating the finger end in the direction in which the menu icon corresponding to the function to be selected or executed is located. In this case, the menu icons of the menu icon display area 111 may also be distinguished and displayed (moved) in order while simultaneously drawing the same trajectories corresponding to the movement trajectories of the fingertips in the input image of each frame. This allows the user to make contactless selection of their intended functions faster and more accurately.

When the desired menu icon is specified through the above-described process (ie, moving to the corresponding menu icon), the user moves the finger end within the selection range as shown by reference numeral 530 of FIG. 5. The vertical movement operation corresponds to an operation of pressing a key button by the user, and through this, the controller 150 may recognize that a function or an application corresponding to a menu icon selected by the user is instructed to be executed. This is determined by recognizing that the formation area of the detection area gradually increases in successive frames.

Similarly, the user may release the specification of the specified menu icon or the like using the contactless function mode. For example, in order to collectively delete a plurality of personal information stored in the phone book, a user may specify a plurality of personal information by using the above-described method (for example, by specifying any one personal information and performing a press operation). Then, if you want to resolve the specific to keep any one person's personal information, so that the pointer or the like is located in the personal information, then move the finger end in the reverse direction of the reference number 530 so that the specification of the personal information is released (released) You may. This can be determined by recognizing that the formation area of the detection area gradually decreases in successive frames.

Here, the controller 150 may use the rate of change of the size of the formation area of the detection area in the input image for more accurate determination of whether the contactless function is selected. For example, in a case where the rate of change in size between the areas of the area where the indicating means is picked up in the input image of each frame input within a predetermined time is equal to or greater than a preset range (ratio), the controller 150 may press or release by the user. Recognizing that contactless function selection (ie vertical movement) has been made.

By using the area-to-area size change rate, it is possible to make an accurate determination of the contactless function selection regardless of the indicating means used by the user. For example, in the case of using the indicating means having its own light emitting portion at the end, as described above, the area of the detection area will increase or decrease as the distance between the indicating means and the camera portion 120 approaches or increases. This is because light emitted from the self-light emitting unit of the indicating means is directly input to the camera unit 120, the area where a specific brightness component is detected in the input image may be formed in proportion to the distance between the indicating means and the camera unit 120 Because. Therefore, even in such a case, if the rate of change of the detection area is used, the contactless state is obtained regardless of whether the area of the detection area increases or decreases as the distance between the indicating means and the camera unit 120 approaches. Accurate recognition of whether a function is selected may be enabled.

In addition to the above-described method, if the area occupied by the detection area corresponding to the fingertip in the input image of each frame and its positional change are used, it can be used in the present invention regardless of the implementation method. For example, as a user takes an action such as clicking a button with a finger, an area occupied by a detection area in each image frame input within a predetermined time increases and then decreases again over a predetermined ratio. It may be recognized that the contactless function is selected. That is, this is a case where the user sets the contactless function selection when the user places the indicating means within the predetermined selection range and then again moves out of the selection range within a predetermined time.

6A and 6B illustrate a state of use of appearance and contactless function selection of a mobile communication terminal according to another embodiment of the present invention.

Referring to FIG. 6A, unlike FIG. 2, the camera unit 120 and the light source unit 140 are positioned in a predetermined space in a key pad where the key input unit 130 is formed. Of course, even in this case, the principle of the contactless function selection according to the present invention described above may be applied as it is. However, by arranging the camera unit 120 and the light source unit 140 as shown in FIG. 6A, some of the above-described non-contact function selection methods may be omitted.

For example, the focus of the camera unit 120 and the light emission angle of the light source unit 140 so that the positions of the virtual key buttons formed on the space within the selection range and the number buttons actually formed on the keypad correspond one to one. Can be set in advance. In this case, the user will not need to horizontally move the fingertip to the position where the function (menu icon) to be selected is displayed. That is, the user places the finger tip directly in the space on the same number button (button 1) as the corresponding number of the menu icon (for example, the phone call icon) to be selected (number 1 in FIG. 2). You can select (Phone call function).

Of course, in general, when the key button is continuously pressed, the detection area corresponds to the position of each key button such that the finger moves away from the mobile communication terminal 100 after pressing the key button and then presses the next key button. Only in this case, the corresponding key button may be recognized as selected. That is, even in this case, the entire process of FIG. 3 to FIG. 5 may be performed, but even in this case, the horizontal movement trajectory of the fingertip is shortened by the user, thereby increasing the burden on the interpretation of the input image of the controller 150. Can be reduced partly.

In addition, unlike FIG. 6A, unlike FIG. 6A, the camera unit 120 and the light source unit 140 do not independently position a predetermined space in a key pad where the key input unit 130 is formed, and share one key button area. The figure illustrates the case. As the camera unit 120 and the light source unit 140 are miniaturized, the camera unit 120 and the light source unit 140 may be formed in one region of one key button (for example, button 5), and thus may not need to occupy a separate region as illustrated in FIG. 6A. Because.

7 is a flowchart illustrating a process of executing a contactless function mode in a mobile communication terminal according to an embodiment of the present invention.

In step S701, the user first instructs execution of the contactless function mode in the mobile communication terminal 100 by pressing a predetermined button (for example, a 'menu' button) of the key input unit 130.

As described above, the controller 150 may control an operation of one or more of the display unit 110, the camera unit 120, the image processing unit 125, the light source unit 140, and the like simultaneously with entering the contactless function mode. . For example, the controller 150 may start to output an image signal corresponding to the external image to the camera unit 120 and instruct the light source unit 140 to turn on. In addition, the display 110 may control the initial screen to be displayed by switching to a screen including the menu icon display area 111. Here, the light source unit 140 emits light having a specific wavelength and / or luminance, and the camera unit 120 generates and outputs an image signal corresponding to a real-time external image, or continuously photographs a subject at predetermined time intervals. .

In step S702, the user places a pointing means such as a finger in front of the camera unit 120, and moves the pointing means horizontally or vertically. An image signal corresponding to the movement of the indicating means is generated and input to the image processing unit 125, and the image processing unit 125 analyzes the change information of the detection area (for example, the movement trajectory and / or the change in the forming area). Generates and outputs image data to be generated.

In step S703, the identification unit analyzes sequentially input image data for each frame to determine the position and area of the detection area. As described above, the detection area is recognized by the analysis of an external image reflected from the light source unit 140 by the indicating means and input to the camera unit 120. Here, as described above, the detection region may be recognized using characteristics (eg, wavelength and / or luminance) of light emitted from the light source unit 140.

In step S704, the identification unit recognizes the movement trajectory (i.e., horizontal movement or vertical movement) of the indicating means by using the movement trajectory of the detection area and the sequential change in the formation area in each input image frame. . As described above, the identification unit may recognize the horizontal movement of the indicating means using, for example, a change in the position of the center point of the detection region, and recognize the vertical movement of the indicating means using the area increase (or change rate) of the detection region. Can be. As described above, the identification unit may recognize the detection area and generate change information by using the image mapping program stored in the memory unit 155. A method of recognizing a contactless selected function using an image mapping program will be described in detail with reference to FIGS. 8 to 10.

In step S705, the controller 150 determines whether the indicating means has moved horizontally by using the change information of the detection area recognized by the identification unit.

If the indicating means moves horizontally, it is for changing the menu item (or information) displayed as selected on the display unit 110 to another one or for changing the position of the pointer, so that the controller 150 performs a corresponding process in S706. Control each component. For example, when the indication means moves horizontally to the right in a state in which 'telephone function' is selected on the display unit 110 as shown in FIG. 2, the 'message' icon located on the right side of the 'telephone function' icon is enlarged. The display screen of the display unit 110 will be converted to be displayed.

However, if the indicating means is vertically moved, the controller 150 is for executing or releasing the menu item (or information) corresponding to the position of the pointer or the menu item (or information) displayed as selected on the display unit 110. Controls each component so that the corresponding process is performed in S707. For example, when the indicating means moves vertically in the direction approaching the lens unit while the display means is selected by the horizontal movement of the indicating means as shown in FIG. 2, the mobile communication terminal 100 is configured to perform the telephone function. Will start the functional mode.

In step S708, the controller 150 determines whether the contactless function mode is terminated. Termination of the contactless function mode may be performed, for example, by input of a predetermined function button or menu item. If the end of the contactless function mode is instructed, the step is terminated. Otherwise, the process proceeds to step S703 again.

8 is a diagram illustrating an image mapping method between image data and a menu icon display area according to an embodiment of the present invention, and FIG. 9 is a table illustrating an image mapping program implementing the image mapping method of FIG. 8 as a table. FIG. 10 is a diagram illustrating a recognition method of a contactless selected function using the image mapping method of FIG. 8.

Referring to FIG. 8, the image data processed by the image processing unit 125 has a predetermined size (for example, m horizontal pixels m × n vertical pixels). In order to ensure that the coordinate information according to the movement of the indicating means is correctly recognized in the contactless function mode as described above, the standardized size and shape (for example, the menu icon display area 111 that can interpret the image data by the image mapping program) ) May be preceded by a process of converting the same size and shape into pixels). The conversion of the input image may be performed by the image processor 125 or the identification unit under the control of the controller 150.

In this case, the origin information of the image data together with the image data may be stored in the image memory. The origin information may be used as reference information for the identification unit to recognize coordinates corresponding to the detection area in the image data. The origin information may be designated as any one of the vertex information of the input image. In addition, the coordinate information corresponding to the detection area may be a center point of the recognized detection area.

Here, the coordinate information (P11 to P33) of each divided area in which the image data is divided is set to be mapped one-to-one with each function (menu icon) displayed on the menu icon display area 115 of the display unit 110. Can be.

9 is a table illustrating an image mapping program for determining coordinates of a detection area in image data. The image mapping program to be described below is merely an example, and various algorithms or programs for recognizing data coordinates may be used.

In addition, the table of FIG. 9 assumes that the menu icon display area 111 is divided into nine partial regions (ie, individual functions) as illustrated in FIG. 2. Therefore, the image mapping program may differ according to the number of functions displayed in the menu icon display area 111. The table of FIG. 10 assumes that vertex information at the lower left is selected as the origin information of the image data, and thus the image mapping program may be different even when other origin information is selected.

Hereinafter, a method of recognizing a contactless function selection through an image mapping program according to the present invention will be described with reference to FIGS. 8 and 9, wherein the coordinates of the detection area are represented by (x, y) and the coordinates of the origin information ( Hereinafter, 'origin' is referred to as (0, 0). Here, x represents the length component value in the horizontal direction (ie, the number of horizontal pixels) with respect to the origin, and y represents the length component value in the vertical direction (ie, the number of vertical pixels) with respect to the origin.

In the case where the x value is 0 <x <m / 3, the coordinate information for all coordinates (x, y) corresponding to the case where the y value is 0 <y <n / 3 is recognized as P11, and the y value is Coordinate information for all coordinates (x, y) corresponding to n / 3 <y <2n / 3 is recognized as P21, and all coordinates (x for y value 2n / 3 <y <n) , coordinate information for y) is recognized as P31.

In addition, when the x value is m / 3 <x <2m / 3, the coordinate information of all coordinates (x, y) corresponding to the case where the y value is 0 <y <n / 3 is recognized as P12. The coordinate information of all coordinates (x, y) corresponding to the case where y value is n / 3 <y <2 n / 3 is recognized as P22, and when the y value is 2n / 3 <y <n Coordinate information for all coordinates (x, y) to be recognized as P32.

In addition, when the x value is 2m / 3 <x <m, the coordinate information for all coordinates (x, y) corresponding to the case where the y value is 0 <y <n / 3 is recognized as P13, and y Coordinate information for all coordinates (x, y) corresponding to the case where the value is n / 3 <y <2n / 3 is recognized as P23, and all coordinates corresponding to the case where the y value is 2n / 3 <y <n Coordinate information about (x, y) is recognized as P33.

Accordingly, in the case of FIG. 10, the coordinates (x, y) of the detection area (assuming a black dot in the drawing) are within the range of 0 <x <m / 3, and the y value It corresponds to the case where it falls in the range of 2n / 3 <y <n. Therefore, the controller 150 may recognize that the detection area is located at P31 using the image mapping program. Accordingly, the identification unit may input the recognition information to the controller 150 so that a menu icon corresponding to the partition information P31 is designated and displayed (see FIG. 2). When the area of the detection area increases while the corresponding menu icon is designated and displayed, the controller 150 executes a function corresponding to the menu icon specified by the recognition information from the identification unit (phone call function in FIG. 2). Will be.

As described above, the apparatus and method capable of selecting a contactless function according to the present invention has an effect of allowing a user to easily and quickly select an intended function by remotely controlling a menu function using a camera.

In addition, the present invention has an effect that can be interesting to the user in selecting a function from the existing monotonous function selection method through the key button.

In addition, the present invention has the effect of maximizing component utilization by allowing the camera provided in the digital device to be used universally.

In addition, the present invention has the effect of reducing the manufacturing cost of the keypad, increase the spatial utilization of the digital device can be miniaturized and diversity in design.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (34)

A digital processing apparatus equipped with an imaging function, A light source unit emitting light to the outside; A camera unit generating and outputting an image signal corresponding to an external image; An image data generator configured to generate image data corresponding to the image signal; And In the image data of each frame unit, the position of the detection area formed by the light reflected and input to the indicating means among the emitted light is detected, and two or more consecutive frames are compared to recognize the movement trajectory of the detection area. It includes an identification unit for generating and outputting the change information, And a pointer to which any one of a plurality of information items displayed on the display unit is selected as the change information or is moved according to the change information is displayed. The method of claim 1, The identification unit detects an area of the detection area in each frame unit, and compares two or more consecutive frames to generate and output change information corresponding to an area change of the detection area. Claim 3 was abandoned when the setup registration fee was paid. The method of claim 2, And when the area changes in a direction in which the area increases, the change information is recognized as a command to start execution of the selected information item. Claim 4 was abandoned when the registration fee was paid. The method of claim 2, And when the area changes in a decreasing direction, the change information is recognized as a deselection command of the selected information item. The method of claim 2, And the area is an area of a figure formed by an outline of the detection area or the number of pixels included in the detection area. Claim 6 was abandoned when the registration fee was paid. The method of claim 1, And the light source unit emits light having a wavelength or luminance to the outside. Claim 7 was abandoned upon payment of a set-up fee. The method of claim 6, And the identification unit detects a position of the detection area in the image data using the wavelength or the luminance. The method of claim 1, Further comprising a key input including at least one key button, And the driving of the light source unit, the camera unit, and the identification unit by input of a preset key button. The method of claim 1, And the light source unit, the camera unit, the image data generation unit, and the identification unit periodically start and end driving until the position of the detection area is detected. Claim 10 was abandoned upon payment of a setup registration fee. And the image data is YUV data or RGB data. In the image signal processor, An image data generator for generating image data corresponding to the image signal input from the image sensor; And Detecting the position of a detection region formed by a predetermined light component in the image data in each frame unit, comparing two or more consecutive frames, recognizing a movement trajectory of the detection region, and generating corresponding change information; Including an identification unit for outputting, And the detection area is an area formed by light that is reflected and input to the indicating means among the light emitted to the outside by the light source unit. The method of claim 11, And the change information functions as an input signal for controlling a digital processing device including the image signal processor. The method of claim 12, The identification unit detects an area of the detection area in each frame unit, and compares two or more consecutive frames to generate and output change information corresponding to the area change of the detection area. The method of claim 13, When the area changes in the increasing direction, the change information is recognized as an instruction to start execution of the information item selected in the change information among a plurality of information items displayed on the display unit of the digital processing apparatus. Processor. The method of claim 13, When the area changes in a decreasing direction, the change information is recognized as a command for deselecting an information item selected for the change information among a plurality of information items displayed on a display unit of the digital processing apparatus. Processor. The method of claim 11, And the light source unit emits light having a wavelength or luminance to the outside. The method of claim 16, And the identification unit detects a position of the detection area in the image data by using the wavelength or the luminance. A receiver configured to receive image data generated to correspond to an external image signal from an image signal processor; And Detecting the position of a detection region formed by a predetermined light component in the image data in each frame unit, comparing two or more consecutive frames, recognizing a movement trajectory of the detection region, and generating corresponding change information; Including an identification unit for outputting, The detection area is an application processor, characterized in that the area formed by the light is reflected by the indicating means of the light emitted to the outside by the light source. The method of claim 18, Wherein the change information functions as an input signal for controlling a digital processing device including the image signal processor and the application processor. The method of claim 19, The identification unit detects an area of the detection area in each frame unit, and compares two or more consecutive frames to generate and output change information corresponding to the area change of the detection area. The method of claim 20, When the area changes in an increasing direction, the change information is recognized as an execution start command of an information item selected in the change information among a plurality of information items displayed on a display unit of the digital processing apparatus. . The method of claim 20, When the area changes in a decreasing direction, the change information is recognized as a command for deselecting an information item selected for the change information among a plurality of information items displayed on a display unit of the digital processing apparatus. . The method of claim 18, The light source unit is an application processor, characterized in that for emitting light of a wavelength or luminance to the outside. The method of claim 23, wherein And the identification unit detects a position of the detection area in the image data using the wavelength or the luminance. In the method in which the digital device having an imaging function performs a contactless function mode, A light source unit emitting light to the outside; Generating and outputting an image signal corresponding to an external image by the camera unit; Generating image data corresponding to the image signal by an image data generator; And The identification unit detects the position of the detection area formed by the light reflected from the emitted light from the image data in each frame unit by the indicating means, and compares two or more consecutive frames to recognize the movement trajectory of the detection area. Generating and outputting corresponding change information, The method of claim 1, wherein any one of the plurality of information items displayed on the display unit is displayed as being selected in the change information or a pointer is moved corresponding to the change information. The method of claim 25, The identification unit detects an area of the detection area in each frame unit, and compares two or more consecutive frames to generate and output change information corresponding to the area change of the detection area. How to perform contact function mode. Claim 27 was abandoned upon payment of a registration fee. And the change information is recognized as a command for starting execution of the selected information item when the area changes in a direction in which the area is increased. Claim 28 was abandoned upon payment of a registration fee. The method of claim 26, And when the area changes in a decreasing direction, the change information is recognized as a command for deselecting the selected information item. The method of claim 26, And the area is an area of a figure formed by an outline of the detection area or the number of pixels included in the detection area. The method of claim 25, And the light source unit emits light having a wavelength or brightness to the outside. The method of claim 30, And the identification unit detects a position of the detection area in the image data using the wavelength or the luminance. The method of claim 25, And a step of inputting a predetermined key selection signal to start driving of the light source unit, the camera unit and the identification unit is performed in advance. The method of claim 25, And the light source unit, the camera unit, the image data generation unit, and the identification unit repeat the corresponding steps periodically until the position of the detection area is detected. Claim 34 was abandoned upon payment of a registration fee. And the image data is YUV data or RGB data.

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