KR20060021138A - Camera device having a function of image stabilizing and its method and mobile terminal using that camera device - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a camera device having a shake correction function, a method thereof, and a portable terminal using the same.

2. The technical problem to be solved by the invention

The present invention can obtain a high-quality image (eg, a photograph), not a shaken or smeared image, by driving a lens and a sensor (eg, an image sensor) in the reverse direction to offset the shake detected from the outside. It is an object of the present invention to provide a camera device having a shake correction function, a method thereof, and a portable terminal using the same.

3. Summary of Solution to Invention

The present invention provides a camera device comprising: optical means for condensing light reflected from a subject; Image acquisition means for acquiring an image by converting light collected by the optical means into an electrical signal; Shake detection means for generating a signal of a predetermined frequency (including high frequency, low frequency) according to the shake detected from the outside; Drive control means for generating a specific drive signal by analyzing a direction and speed of a shake in response to receiving a signal of a predetermined frequency from the shake detection means; And driving means for driving the optical means and the image acquisition means to cancel the shake in accordance with a specific drive signal from the drive control means.

4. Important uses of the invention

The present invention is used in the portable terminal.

Camera device, handheld terminal, image stabilization, lens, acceleration sensor, driving device

Description

Camera device having a function of image stabilizing and its method and mobile terminal using that camera device}             

1 is a block diagram of a wireless communication terminal to which a camera apparatus according to the prior art is applied;

2 is an explanatory diagram of an image photographed by the camera apparatus of FIG. 1;

3 is a configuration diagram of an embodiment of a wireless communication terminal to which a camera apparatus having a shake correction function according to the present invention is applied;

4 is a detailed configuration diagram of an embodiment of the camera apparatus of FIG. 3;

5 is a flowchart illustrating a shake correction method in a camera apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

100: wireless transmission and reception unit 200: input unit (keypad)

300: LCD 400: storage

500: image capturing unit (camera) 510: camera module

511: optical unit 512: image acquisition unit

530: shake detection unit 540: first drive control unit

541: First Filter Unit 542: First Data Extraction Unit

543: first signal generator 550: second drive controller

551: second filter unit 552: second data extractor

553: second signal generator 560: first driver

570: second drive unit 600: control unit

700: codec 800: audio output unit (speaker)

900: voice input unit (microphone)

The present invention relates to a camera device having a shake correction function and a method thereof, and a portable terminal using the same, and more particularly, a sensor (eg, an image sensor) for detecting a lens and an image in a reverse direction thereof to cancel a shake detected from the outside. The present invention relates to a camera device having a shake correction function, and a method and a portable terminal using the same, so as to obtain a high quality image (eg, a photo) rather than a shaken or smeared image.

First, the terms used in the present invention will be described.

In the present invention, a wireless communication terminal is a mobile communication terminal, a personal mobile communication terminal (PCS), a personal digital terminal (PDA), a smart phone, a next generation mobile communication terminal (IMT-2000), a wireless communication while being carried by an individual such as a wireless LAN terminal. Say this is possible terminal.

In addition, in the present invention, the portable terminal refers to a terminal capable of capturing an image while being carried by an individual such as a wireless communication terminal, a digital camera, a camcorder, and the like.

In addition, in the present invention, the left and right directions refer to a direction in which the camera shakes from side to side with respect to the person shooting the subject, and the up and down directions refer to a direction in which the camera shakes up and down, and the focus direction refers to a direction in which the camera moves away from or close to the subject. Say. The camera device and the method and the portable terminal using the same according to the present invention can detect the shake in the three directions, it is possible to detect the shake in any direction in the three-dimensional stereoscopic space and cancel it.

Recently, with the expansion of portable terminals equipped with camera functions such as digital cameras, camera phones, camcorders, and the like, many people enjoy taking pictures such as photos and videos even when they are on the move. Here, a case in which the camera apparatus according to the related art in the wireless communication terminal among the portable terminals is applied will be described with reference to FIG. 1.

1 is a block diagram of a wireless communication terminal to which a camera apparatus according to the prior art is applied.

As shown in FIG. 1, the wireless communication terminal to which the camera apparatus according to the prior art is applied includes an optical signal 11 for condensing light reflected from a subject and an electric signal transmitted through the optical part 11. To generate and process image data by receiving an electrical signal from the image capturing unit (camera) 10 and the image capturing unit 12 including an image obtaining unit 12 for converting to And an image processor 20 for storing the image data, and a main processor 30 for controlling the components to acquire and store an image of a subject. Here, the optical unit 11 includes a lens, and the image acquisition unit 12 includes a sensor such as an image sensor.

In general, when the camera captures an image of a subject, a short shutter speed of a predetermined speed or more may be secured to obtain an image without shaking. Shutter speed is an adjustment of the exposure time to light so that images can be taken with appropriate brightness. Short shutter speeds of 1/30 sec or more for single lens reflex (SLR) cameras or equivalent digital cameras using 35 mm film Is needed. The shorter the shutter speed, the faster a moving object can acquire an image without shaking. On the other hand, in the case of long shutter speeds, the camera is shaken during the time the shutter is pressed, which is likely to generate a shake or smeared image.

On the other hand, a portable terminal having an image capturing function such as a wireless communication terminal is generally light and compact because many people use it on the go anytime and anywhere. Therefore, the lens provided in the camera device of the portable terminal is also a small, low-light lens, that is, a relatively dark lens.

However, since the amount of light required for a sensor (that is, a sensor for detecting an image) to receive light through the lens to detect an image of a subject is always constant, a relatively long light is collected to condense the required amount of light when the lens is dark. Shutter speed is required. In other words, when the lens is dark, there is a high possibility that the camera device is shaken during shooting due to a relatively long shutter speed, and thus a shaken or smeared image is taken.

In addition, since the portable terminal is light and compact, there is a problem in that the camera shakes due to the power of the hand applied to the camera or the normal hand shaking at the moment of pressing the shutter and thus the shaken or smeared image is taken.

In addition, in the case of a camera device and a portable terminal using the same according to the prior art, since a sensor for detecting an image, such as an image sensor, is fixed at a specific position in the camera, the sensor for detecting the image is also shaken when the camera is shaken. There was an issue that could not focus precisely.

Referring to FIG. 2, the optical unit 11 and the image acquisition unit 12 of the image capturing unit (camera) 10 have a long shutter speed and a shutter while the subject is fixed without shaking. It may be shaken in various directions due to the force applied to the camera device or normal hand shaking.

That is, in the conventional technology as described above, a sensor (for example, an image sensor) for detecting a lens and an image of the camera device is shaken together with the camera due to shaking due to a long shutter speed or normal hand shaking, resulting in an incorrect focus and shaking. There was a problem that images were blurred or smeared.

The present invention has been proposed to solve the above problems, by driving the optical unit and the image acquisition unit for image sensing in the reverse direction of the shake in accordance with the signal from the shake detection unit for detecting a shake from the outside, to cancel the shake, An object of the present invention is to provide a camera apparatus having a shake correction function and a method thereof, so that a high quality image can be obtained instead of a shaken or smeared image.

In addition, the present invention by using a camera device having a shake correction function that cancels the various shake caused by hand shake, fine movement, etc. during the image shooting to obtain a high quality image of the shake or smeared image while maintaining the portability intact Another object of the present invention is to provide a portable terminal having a camera device having a shake correction function.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. In addition, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

An apparatus of the present invention for achieving the above object, the camera device comprising: optical means for condensing light reflected from a subject; Image acquisition means for acquiring an image by converting light collected by the optical means into an electrical signal; Shake detection means for generating a signal of a predetermined frequency (including high frequency, low frequency) according to the shake detected from the outside; Drive control means for generating a specific drive signal by analyzing a direction and speed of a shake in response to receiving a signal of a predetermined frequency from the shake detection means; And driving means for driving the optical means and the image acquisition means to cancel the shake in accordance with a specific drive signal from the drive control means.

In addition, an apparatus of the present invention for achieving another object, the portable terminal comprising: input means for receiving a camera driving request signal, the first shutter signal, the second shutter signal; Storage means for storing a program and an image for activating a camera module; The camera module for condensing light reflected from a subject and converting the light into an electrical signal to obtain an image; Shake control means for generating a specific drive signal by generating a signal of a predetermined frequency (including high frequency, low frequency) according to the sensed from the outside to analyze the direction and speed of the shake; Camera module driving means for driving the camera module to cancel the shake in accordance with a specific drive signal from the shake control means; And activating the camera module according to the input of the camera driving request signal through the input means, and the direction and speed of the shake detected by the shake control means from the outside as the first shutter signal is input through the input means. And control to generate a specific driving signal, and control the camera module driving means to drive the camera module according to the generated specific driving signal in response to receiving the second shutter signal through the input means. And control means for controlling the camera module to acquire an image of a subject and store the image in the storage means.

On the other hand, the method of the present invention for achieving the above object, the shake correction method in the camera device, the shake detection step for detecting a shake from the outside; A shaking information generating step of generating a signal of a predetermined frequency (including high frequency and low frequency) corresponding to the sensed shaking; A shaking information analyzing step of extracting vector data about shaking from the generated signal of a predetermined frequency to analyze the direction and speed of shaking; A shake cancel signal generation step of generating a specific drive signal corresponding to the camera to be driven in the reverse direction of the shake; A shake canceling step of canceling shake by causing the camera to be driven according to the generated specific drive signal; And an image acquisition step of acquiring an image by converting light collected from a subject into an electrical signal.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, prior to the detailed description of the present invention will be described by taking the case in which the camera device having a shake correction function according to the present invention is applied to a wireless communication terminal widely used today among portable terminals as an example.

3 is a configuration diagram of an embodiment of a wireless communication terminal to which a camera apparatus having a shake correction function according to the present invention is applied.

As shown in FIG. 3, the wireless communication terminal to which the camera apparatus having the shake correction function according to the present invention is applied includes a wireless transmitter / receiver 100 and a user for transmitting / receiving a wireless signal with an external device through a wireless communication network. An input unit (keypad) 200 for receiving various signals related to image capturing such as a camera driving request signal, first and second shutter signals, and a display unit (LCD) for outputting a screen according to control of the controller 600 ( 300, a camera driving program for activating the camera module 510 of the image capturing unit (camera) 500, a storage unit 400 for storing an image, and the like, and a camera module in a reverse direction with respect to the shaking detected from the outside. In response to receiving a camera driving request signal through an image capturing unit (camera) 500 and an input unit (keypad) 200 for driving an image of a subject by driving 510, the image capturing unit (camera) Activate the camera module 510 of the (500) and receive the first shutter signal through the input unit (keypad) 200. The image capturing unit (camera) 500 detects the shaking and shakes the shake. Analyzing the direction and the speed to control the camera module 510 to run in the opposite direction of the shake, the image taking part (camera) 500 in response to receiving the second shutter signal through the input unit (keypad) 200 ) Is a control unit 600 for controlling each component so as to acquire an image of the subject and store it in the storage unit 400, and a signal received from the wireless transmitter / receiver unit 100 under the control of the control unit 600. To be output to the voice output unit (speaker) 800, and converts the voice input from the voice input unit (microphone) 900 to a signal to be transmitted to the control unit 600 to be transmitted through the wireless transmission and reception unit 100 Codec 700 for the nose A voice output unit 800 for outputting the voice received from the deck (CODEC) 700, and a voice input unit (microphone) 900 for receiving the voice to be transmitted to the codec (CODEC) 700.

That is, in the present invention, the control unit 600 controls the overall operation of the terminal, and at the same time, the image capturing unit (camera) 500 detects the shake from the outside and drives the camera module 510 in the opposite direction to the shake. Off to control the image capture of the subject.

In addition, the storage unit 400 stores an operation program and a system program of the control unit 600, and the operation program and the system program are stored in a normal ROM area and can be erased as necessary. The storage unit 400 further includes a RAM for temporarily storing data generated during execution of various operation programs. In particular, the storage unit 400 stores a camera driving program for activating the camera module 510 of the image capturing unit (camera) 500, and an image.

In addition, the input unit 200 includes a plurality of numeric keys (letter keys), menu keys, and function keys for performing various functions, and outputs key data to the controller 600 by external operations. In particular, the input unit 200 is used to receive a signal related to image capturing such as a camera driving request signal, a first shutter signal, a second shutter signal, and the like from a user. Here, the camera driving request signal is a signal for activating the camera module 510 of the image capturing unit (camera) 500, the first shutter signal is a signal generated by pressing the shutter button halfway, and the second shutter signal is completely This signal is generated when the shutter is pressed.

In addition, the display unit 300 is a display device such as a liquid crystal display (LCD). The display unit 300 is controlled by the controller 600 to display the state of the wireless communication terminal or the progress of the program. That is, the overall state of the wireless communication terminal and the contents received are displayed.

In addition, the image capturing unit 500 acquires an image of the subject by canceling the shake sensed from the outside under the control of the controller 600. In particular, the image capturing unit 500 detects a shake from the outside, analyzes the vector data of the shake and drives the camera module 510 in the reverse direction of the shake to obtain an image of the subject. That is, the camera module 510 is driven in the opposite direction to the shake by analyzing the direction and speed of the shake detected from the outside under the control of the controller 600 receiving the first shutter signal, and receiving the second shutter signal. An image of the subject is obtained under the control of the controller 600. A more detailed configuration and operation thereof will be described with reference to FIG. 4.

4 is a detailed block diagram of an embodiment of the camera apparatus of FIG. 3.

As shown in FIG. 4, the camera apparatus having the shake correction function according to the present invention includes an optical unit 511 for condensing light reflected from a subject and light incident through the optical unit 511. A camera module 510 including an image acquisition unit 512 for converting the signal to the control unit 600 and transmitting the signal to a predetermined frequency indicating the shake (including high frequency and low frequency) by detecting a shake from the outside. The shake detection unit 530 for generating and extracting the vector data according to the low frequency received from the shake detection unit 530 to analyze the direction and speed of the shake in the left and right direction and the vertical direction to generate the first driving signal The first drive control unit 540 for extracting the high-frequency from the shake detection unit 530 to extract the vector data to the left and right of the focal direction in the focal direction The second driving controller 550 for analyzing the direction and the speed to generate the second driving signal, and the optical unit 511 of the camera module 510 according to the first driving signal from the first driving controller 540. A first driver 560 for driving and a second driver 570 for driving the image acquisition unit 512 of the camera module 510 according to a second drive signal from the second drive controller 540. do.

Here, the first and second driving controllers 540 and 550 will be described in more detail. The first driving controller 540 may include a first filter unit 541 for filtering low frequencies received from the shake detection unit 530. And a first data extractor 542 for analyzing the direction and the speed of the shake by extracting the vector data in the left and right directions and the vertical direction from the filtered low frequency, and according to the analysis result of the direction and the speed of the shake. The first driver 560 includes a first signal generator 543 for generating a first driving signal to drive the optical unit 511 of the camera module 510 in the direction of canceling the shake. In addition, the second driving controller 550 extracts the second filter unit 551 for filtering the high frequency received from the shake detection unit 530 and the vector data for the left and right and focus directions from the filtered high frequency. The second data extractor 552 for analyzing the direction and speed of the shake, and the second drive unit 570 in the direction to cancel the shake in accordance with the analysis result of the direction and speed of the shake of the camera module 510 And a second signal generator 553 for generating a second driving signal to drive the image acquisition unit 512.

That is, the optical unit 511 of the camera module 510 refers to a lens of a general camera. The optical unit 511 of the camera module 510 is connected to the first driving unit 560 including an actuator, and is driven by the first driving unit 560. do. In particular, the optical unit 511 is driven to cancel the shake in the vertical direction in which the shake width is greatest.

In addition, the image acquisition unit 512 of the camera module 510 detects an image of a subject. Here, the image sensor 512 may be implemented by using an image sensor, and the like is connected to the second driver 570 including an actuator, so that the image sensor 512 is driven by the second driver 570. .

In addition, the shake detection unit 530 detects a shake from the outside (that is, the direction and speed of the shake) and generates a signal having a frequency corresponding thereto. In particular, the shake detection unit 530 detects shake in all directions in a three-dimensional space by detecting a shake direction in a left, right, up and down direction and a focusing direction. At this time, a signal having a corresponding frequency is generated according to the detected shake speed and the direction thereof, for example, a low frequency is generated according to the detection of the shake in the left and right directions and the up and down directions, and the shake in the left and right directions and the focal direction. By detecting the high frequency can be generated. In this case, the shake detection unit 530 may be implemented using an acceleration sensor. In the case of the acceleration sensor, the shake may be sensed in one or two directions depending on the performance of the individual sensor. That is, in the above embodiment, the left and right directions and the up and down directions are sensed together, and the left and right directions and the focal directions are sensed together as an example, but each direction is configured to be detected by different sensors or by one sensor. It can be implemented in various ways, such as configured to be detected. Of course, it is also possible to implement the shake detection unit 530 using other devices capable of detecting a shake (direction and speed) from the outside, not the acceleration sensor.

In addition, the first filter unit 541 included in the first driving control unit 540 removes the low frequency received from the shake detection unit 530 using a filter such as a lowpass filter. In addition, the first data extractor 542 extracts the vector data for the shake from the low frequency received from the first filter unit 541 to analyze the direction and speed of the shake, and the first signal generator 543 According to the analysis result, the first driver 560 generates a first driving signal to drive the optical unit 511 of the camera module 510.

In addition, the second filter unit 551 included in the second driving controller 550 removes noise by using a filter such as a highpass filter, etc., from the high frequency signal received from the shake detection unit 530. The second data extractor 552 extracts the vector data for the shake from the high frequency received from the second filter 551 to analyze the direction and the speed of the shake, and the second signal generator 553 According to the analysis result, the second driver 570 generates a second driving signal to drive the image acquisition unit 512 of the camera module 510. The first and second signal generators 543 and 553 may further perform a function of amplifying the generated first and second driving signals.

In addition, the first driver 560 drives the optical unit 511 to cancel the shake from the outside as the first drive signal is received from the first signal generator 543, and the second driver 570 As the second drive signal is received from the second signal generator 553, the image acquisition unit 512 is driven to cancel the shake from the outside. The first and second drivers 560 and 570 may be implemented using any one of various actuators such as a linear motor, an ultrasonic motor, a two-axis solenoid, and the like.

5 is a flowchart illustrating a shake correction method in a camera apparatus according to the present invention.

First, as the shake detection unit 530 detects the shake from the outside (501) generates a signal of a predetermined frequency to indicate the direction and speed of the shake (502). For example, a low frequency wave may be generated by detecting a shake in the left and right directions and a vertical direction, and a high frequency may be generated by detecting the shake in the left and right directions and a focus direction. Here, the shake detection unit 530 may be implemented using one or more acceleration sensors.

Thereafter, the first and second filter units 541 and 551 of the first and second driving controllers 540 and 550 receive low and high frequencies from the shake detection unit 530, respectively, and perform filtering accordingly. The first and second data extractors 542 and 552 are shaken from the low or high frequencies as the filtered low and high frequencies are received from the first filter unit 541 and the second filter unit 551, respectively. Extract the vector data for and analyze the direction and speed of shaking (503). Here, the first filter unit 541 may be implemented using a low pass filter for removing low frequency noise, and the second filter unit using a high pass filter for controlling high frequency noise.

Thereafter, the first signal generator 543 drives the specific signal according to the analysis result of the first data extractor 542 and the second signal generator 553 according to the analysis result of the second data extractor 552. Each signal is generated (504).

Then, the first driver 560, which receives the specific drive signal from the first signal generator 543, drives the optical unit 511 of the camera module 510 from the second signal generator 553. The second driver 570 receiving the signal drives the image acquisition unit 512 of the camera module 510, respectively or together (505). The first and second drivers 560 and 570 may be implemented using any one of various actuators such as a linear motor, an ultrasonic motor, a two-axis solenoid, and the like.

Thereafter, the image acquisition unit 512 converts the light collected by the optical unit 511 of the camera module 510 into an electrical signal to obtain an image (506).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention has an effect of canceling the shake by driving the optical unit and the image acquisition unit in the reverse direction of the shake sensed from the outside during image capturing, thereby obtaining a high quality image rather than a shaken or smeared image.                     

That is, according to the present invention, a sensor (for example, an image sensor) and a lens for detecting an image are driven in the opposite directions according to the direction of the shake to cancel the shake from the outside, so that the image is taken regardless of the direction and the size of the shake. The shake is corrected to obtain a high quality image.

In addition, the present invention is capable of driving the sensor for detecting the image to prevent the focus blur due to the external shake and to accurately focus, thereby obtaining a cleaner image.

In addition, the present invention is capable of driving the lens as well as the sensor for sensing the image, there is an effect to enable a more precise and wide correction for the shake from the outside.

In addition, the present invention has the effect of obtaining a high-quality image, not a shake or smeared image using a portable terminal widely used in everyday life.

That is, while maintaining the portability, mobility, and convenience of the portable terminal as it is, there is an effect that can correct the shake during image capture due to the dark lens and light weight, which is the limitation of the portable terminal.

In addition, the camera device having a shake correction function according to the present invention has an effect that can be applied to various types of portable terminals, such as a wireless communication terminal, a digital camera, a camcorder.

In addition, the present invention by using any one of a variety of actuators (linear motor, ultrasonic motor, two-axis solenoid, etc.) to drive the sensor for detecting the lens and the image, In addition to providing a high speed and low noise correction of the shake, there is an effect that can contribute to the miniaturization of the camera device and the portable terminal using the same.

Claims (9)

In the camera device, Optical means for condensing light reflected from a subject; Image acquisition means for acquiring an image by converting light collected by the optical means into an electrical signal; Shake detection means for generating a signal of a predetermined frequency (including high frequency, low frequency) according to the shake detected from the outside; Drive control means for generating a specific drive signal by analyzing a direction and speed of a shake in response to receiving a signal of a predetermined frequency from the shake detection means; And Drive means for driving the optical means and the image acquisition means to cancel the shake in accordance with a specific drive signal from the drive control means; Camera apparatus having a shake correction function comprising a. The method of claim 1, The drive control means, Extract the vector data of the shake from the signal of the predetermined frequency received from the shake detection means to analyze the direction and the speed of the shake so that the optical means and the image acquisition means are driven individually or together in the reverse direction of the shake. Generates a drive signal, The drive means, Camera apparatus having a shake correction function, characterized in that for driving each or together the optical means and the image acquisition means in accordance with a specific drive signal received from the drive control means. The method of claim 2, The drive control means, And performing a filtering on a signal of a predetermined frequency received from the shake detecting means, and extracting vector data about a shake from the signal of the predetermined frequency. The method according to any one of claims 1 to 3, The shake detection means, Camera apparatus having a shake correction function comprising an acceleration sensor. In the shake correction method in the camera device, A shake detection step of detecting a shake from the outside; A shaking information generating step of generating a signal of a predetermined frequency (including high frequency and low frequency) corresponding to the sensed shaking; A shaking information analyzing step of extracting vector data about shaking from the generated signal of a predetermined frequency to analyze the direction and speed of shaking; A shake cancel signal generation step of generating a specific drive signal corresponding to the camera to be driven in the reverse direction of the shake; A shake canceling step of canceling shake by causing the camera to be driven according to the generated specific drive signal; And An image acquisition step of acquiring an image by converting light collected from a subject into an electrical signal. Shake correction method in the camera device comprising a. The method of claim 5, wherein The shake cancellation step, The shake correction method of the camera device, characterized in that for driving the optical unit and the image acquisition unit of the camera, respectively or together in accordance with the generated specific drive signal to cancel the shake. In a portable terminal, Input means for receiving a camera driving request signal, a first shutter signal, and a second shutter signal; Storage means for storing a program and an image for activating a camera module; The camera module for condensing light reflected from a subject and converting the light into an electrical signal to obtain an image; Shake control means for generating a specific drive signal by generating a signal of a predetermined frequency (including high frequency, low frequency) according to the sensed from the outside to analyze the direction and speed of the shake; Camera module driving means for driving the camera module to cancel the shake in accordance with a specific drive signal from the shake control means; And When the camera driving request signal is input through the input means, the camera module is activated, and when the first shutter signal is input through the input means, the shake control means detects the direction and speed of the shake from the outside. Analyze and control to generate a specific drive signal, in response to receiving the second shutter signal through the input means to control the camera module driving means to drive the camera module according to the generated specific drive signal to the camera Control means for controlling the module to acquire an image of a subject and store it in the storage means Portable terminal comprising a. The method of claim 7, wherein The camera module, A portable terminal comprising a lens and an image sensor. The method according to claim 7 or 8, The portable terminal, A portable terminal comprising a wireless communication terminal, a digital camera, and a camcorder.

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