KR20160089263A - Automatic horizontal keeping camera apparatus and method for the same - Google Patents

Automatic horizontal keeping camera apparatus and method for the same Download PDF

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Publication number
KR20160089263A
KR20160089263A KR1020150143780A KR20150143780A KR20160089263A KR 20160089263 A KR20160089263 A KR 20160089263A KR 1020150143780 A KR1020150143780 A KR 1020150143780A KR 20150143780 A KR20150143780 A KR 20150143780A KR 20160089263 A KR20160089263 A KR 20160089263A
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South Korea
Prior art keywords
horizontal
camera module
image sensor
horizontal control
control signal
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KR1020150143780A
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Korean (ko)
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KR102017750B1 (en
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정영식
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한국전자통신연구원
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Priority to US14/993,244 priority Critical patent/US9667869B2/en
Publication of KR20160089263A publication Critical patent/KR20160089263A/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • H04N5/23203—
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2217/00—Details of cameras or camera bodies; Accessories therefor
    • G03B2217/24—Details of cameras or camera bodies; Accessories therefor with means for separately producing marks on the film
    • G03B2217/242—Details of the marking device
    • G03B2217/245—Mechanical devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/20—Details of telephonic subscriber devices including a rotatable camera

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Studio Devices (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)

Abstract

Disclosed are an automatically leveling camera module and a method for leveling an image sensor. Particularly, according to an embodiment of the present invention, a method for leveling an image sensor and a camera module comprises the following steps: a level sensor recognizes if the image sensor is in a leveled state; a leveling control signal generating unit generates a leveling control signal, based on a result of comparing a reference state with the leveled state; and a leveling control device rotates either the camera module or the image sensor so as to maintain the leveled state according to the leveling control signal, and controlling the camera module or the image sensor to maintain the leveled state. The purpose of the present invention is for a smartphone or a video camera, equipped with a camera module, to stably perform taking a photograph or a video, even when the smartphone or video camera shakes, by leveling the camera module.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automatic horizontal-

The present invention relates to an automatic leveling camera device and a method therefor.

Recently, smart phones and video cameras are widely used, and camera modules are widely used in such devices. The camera module is a part that acquires images of a digital camera or a video camera, and is composed of a lens, a filter, and an image sensor.

It is very difficult to keep the screen horizontal when shooting a still image or movie using a smartphone or video camera equipped with a camera module. Therefore, when playing back still images or movies recorded on other devices, I see a very uncomfortable screen because it is not right.

In particular, when a video transmitted from a smart phone is viewed on a TV, since the TV can not be tilted, the transmitted video is displayed on the TV in a slanted form rather than horizontally, .

Also, if you do not maintain the correct level when taking a panorama, you will not get clear panoramic pictures. In order to solve such a problem, a product that maintains the screen level in software is commercially available, but such a software level maintenance results in deterioration of image quality or reduction of screen size.

There is a method to keep the camera or video camera moving horizontally by moving the entire camera mechanically. However, this method has a disadvantage that it is difficult to use as a portable device in a smart phone or a small video camera because the size of the horizontal holding device is large and heavy.

To solve such a problem, a technical method of automatically maintaining the camera module in a horizontal position in order to maintain the original image quality without deterioration has become necessary.

An object of the present invention is to enable a camera or a video camera equipped with a camera module to photograph a static image or a moving image stably maintained in a horizontal position while keeping the camera module horizontally.

It is another object of the present invention to provide a camera module capable of capturing clear panoramic photographs by keeping the camera module horizontal without providing a separate horizontal holding device.

According to an aspect of the present invention, there is provided an automatic horizontal holding camera device including a camera module including a camera lens, a filter, and an image sensor; A horizontal sensor for recognizing a positional state corresponding to the image sensor; A horizontal control signal generator for generating a horizontal control signal using a result of comparing the position state and the reference state; And a horizontal control unit for rotating the camera module based on the horizontal control signal and controlling the camera module to maintain the horizontal position.

At this time, the horizontal sensor may be composed of at least one of a gyroscope sensor, a gravity sensor, and an acceleration sensor.

At this time, the horizontal control device may determine the direction of rotation of the camera module based on the horizontal control signal, and may perform the rotation in the direction of the camera module using the servo motor.

At this time, the horizontal control device may determine the angle of rotation of the camera module based on the horizontal control signal, and may perform the rotation using the stepping motor at the angle of the camera module.

At this time, the horizontal control device can rotate the camera module at an angle between -180 degrees and 180 degrees.

In this case, the camera module includes a gradient filter, and the horizontal control device can rotate the gradation filter and the camera module in the same direction and angle based on the horizontal control signal.

In this case, the camera module may include a light removal unit for controlling the image circle in size and shape of the image sensor.

According to another aspect of the present invention, there is provided a camera device comprising: a camera module including a camera lens, a filter, and an image sensor; A horizontal sensor for recognizing a positional state corresponding to the image sensor; A horizontal control signal generator for generating a horizontal control signal using a result of comparing the position state and the reference state; And a horizontal control unit for rotating the image sensor of the camera module based on the horizontal control signal and controlling the image sensor to maintain the horizontal position.

At this time, the horizontal sensor may be composed of at least one of a gyroscope sensor, a gravity sensor, or an acceleration sensor.

At this time, the horizontal control device may determine the direction of rotation of the image sensor based on the horizontal control signal, and may perform the rotation of the image sensor using the servo motor.

At this time, the horizontal control device may determine the rotation angle of the image sensor based on the horizontal control signal, and may perform rotation of the image sensor using a step motor.

At this time, the horizontal control device can rotate the camera module at an angle between -180 degrees and 180 degrees.

At this time, the horizontal control device may be connected to the image sensor by an electromagnetic method.

According to another aspect of the present invention, there is provided a method of horizontally maintaining a camera module, comprising: recognizing a horizontal state of an image sensor by a horizontal sensor; Generating a horizontal control signal based on a result of the horizontal control signal generator comparing the horizontal state and the reference state; And rotating the camera module such that the horizontal control device maintains the horizontal position according to the horizontal control signal, and controlling the camera module to maintain the horizontal position.

In this case, the step of generating the horizontal control signal may generate the horizontal control signal including at least one of the rotation direction and the rotation angle of the camera module.

In this case, in the step of controlling the camera module to be horizontal, the direction of rotation of the camera module may be determined based on the horizontal control signal, and the camera module may be rotated using the servo motor.

At this time, in the step of controlling the camera module to be horizontal, the angle of rotation of the camera module is determined based on the horizontal control signal, and the camera module is rotated at the angle using the step motor .

At this time, the step of controlling the camera module to be horizontal may rotate the gradation filter and the camera module in the same direction and angle based on the horizontal signal.

According to the present invention, even when a smart phone or a video camera equipped with a camera module shakes by holding the camera module horizontally, it is possible to shoot a still image or a moving image stably maintained in a horizontal position.

 Further, according to the present invention, it is possible to photograph a clear panoramic picture by keeping the camera module horizontal without providing a separate horizontal holding device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to more fully understand the drawings recited in the detailed description of the present invention, a detailed description of each drawing is provided.
1 and 2 are conceptual diagrams (front views) of a camera module for explaining an embodiment of the present invention.
3 to 4 are conceptual views (side views) of a camera module for explaining an embodiment of the present invention.
5 is a conceptual diagram of an automatic leveling camera device according to an embodiment of the present invention.
6 to 7 are conceptual diagrams illustrating a connection state between a horizontal control device and a camera module according to an embodiment of the present invention.
8 is a conceptual diagram for explaining a horizontal holding function of a camera module according to an embodiment of the present invention.
9 is a flowchart illustrating a method of maintaining a camera module in a horizontal position according to an exemplary embodiment of the present invention.
10 is a flowchart illustrating a method of maintaining an image sensor in a horizontal position according to an embodiment of the present invention.

It is to be understood that the specific structural or functional description of embodiments of the present invention disclosed herein is for illustrative purposes only and is not intended to limit the scope of the inventive concept But may be embodied in many different forms and is not limited to the embodiments set forth herein.

The embodiments according to the concept of the present invention can make various changes and can take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms may be named for the purpose of distinguishing one element from another, for example, without departing from the scope of the right according to the concept of the present invention, the first element may be referred to as a second element, The component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like are used to specify that there are features, numbers, steps, operations, elements, parts or combinations thereof described herein, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

1 is a front view of a camera module for explaining an embodiment of the present invention.

1, the camera module 100 includes a lens 120, an image sensor 110, an actuator (not shown) for focusing a subject, a low-pass filter for anti-aliasing (Not shown) for determining the brightness and the brightness distribution of the photographic scene. However, in order to explain the present invention, the camera module 100 may include a lens 120 and a light- Only the image sensor 110 is displayed.

2 is a front view of a camera module for explaining an embodiment of the present invention.

2, the camera module 200 includes a lens 220 and an image sensor 210, a rotation plate 230 with an image sensor attached thereto, an actuator (not shown) for focusing a subject, A low-pass filter (not shown) for anti-aliasing, a photometry module (not shown) for detecting a brightness and a brightness distribution of the photographic scene, and the like. Only the lens 220, the image sensor 210 and the rotary plate 230 are displayed in the module 200.

The difference between the camera module shown in Fig. 1 and the camera module shown in Fig. 2 is whether or not the rotating plate 230 is present.

1 is to rotate the camera module, which is shown in FIG. 2, which rotates the image sensor, and uses the rotary plate 230 to rotate the image sensor. However, when the image sensor 210 can be rotated without the rotation plate 230, the rotation plate 230 may be omitted.

3 is a side view of a camera module for explaining an embodiment of the present invention.

Referring to FIG. 3, the lens 120 of the camera module 100 may be composed of one lens or a plurality of lenses. It may also include a mirror, such as a reflective lens. As the image sensor 110, a CMOS image sensor using a complementary metal-oxide-semiconductor (CMOS) or a CCD image sensor using a charge-coupled device may be used.

4 is a side view of a camera module for explaining an embodiment of the present invention.

Referring to FIG. 4, the lens 220 of the camera module 200 may be composed of one lens or a plurality of lenses. It may also include a mirror, such as a reflective lens. As the image sensor 210, a CMOS image sensor using a complementary metal-oxide-semiconductor (CMOS) or a CCD image sensor using a charge-coupled device may be used.

FIG. 4 is a diagram in which a rotation plate 230 is added in FIG. 3. As described above, when the image sensor 210 can be rotated without the rotation plate 230, the rotation plate 230 may be omitted.

5 is a conceptual diagram of an automatic leveling camera device according to an embodiment of the present invention.

Referring to FIG. 5, the horizontal sensor may be a gyroscope sensor, a gravity sensor, or an acceleration sensor. The horizontal sensor may be attached to the image sensor 110 or the camera module 100. The horizontal sensor generates horizontal sensor data 310, which is information on the direction and angle in which the image sensor 110 is inclined or inclined from the reference state (horizontal state), and transmits it to the horizontal control signal generator

The horizontal control signal generator generates the horizontal control signal 520 based on the horizontal sensor data 510.

In this case, when the horizontal sensor data 510 is information on the direction and angle of inclination of the camera module 200 in the reference state (horizontal), the horizontal control signal generator may be inclined in a direction opposite to the tilting direction of the camera module 100 And sends out the horizontal control signal 520 so as to rotate by a true angle.

In this case, when the horizontal sensor data 510 is information on the direction and angle in which the image sensor 210 is tilted in the reference state (horizontal), the horizontal control signal generator generates a horizontal control signal by tilting the image sensor 210 in the opposite direction And sends out the horizontal control signal 520 so as to rotate by a true angle.

On the other hand, when the horizontal sensor data 510 contains only the information about the tilted direction of the camera module 100, the horizontal control signal generator outputs the horizontal control signal 520). In this case, since the tilting degree of the camera module 100 is adjusted in the opposite direction by the horizontal control signal 520, the camera module 100 has a negative feedback structure, and as a result, the camera module 100 can maintain the horizontal position.

In the case where the horizontal sensor data 310 contains only information on the direction in which the image sensor 210 is tilted, the horizontal control signal generator outputs a horizontal control signal such that the image sensor 210 rotates in a direction opposite to the tilted direction Signal 320. In this case, the degree of tilt of the image sensor 210 is adjusted in the opposite direction by the horizontal control signal 320, so that the image sensor 210 has a negative feedback structure. As a result, the image sensor 210 can maintain the horizontal state.

6 is a conceptual diagram for explaining a connection state between a horizontal control device and a camera module according to an embodiment of the present invention.

Referring to FIG. 6, the camera module 100 is connected to a step motor 610, which is an embodiment of the horizontal control device 600, by a shaft 620 of a step motor.

 At this time, the horizontal control device 600 is constituted by the step motor 610, but any horizontal control device including the servo motor can be used if the camera module 100 can be rotated according to the horizontal control signal.

It is preferable to use a step motor which is advantageous for controlling the accurate rotation angle when the horizontal control signal contains the information of the magnitude of the inclined angle.

It is preferable to use a servo motor in a case where the horizontal control signal contains only information on a direction in which the horizontal control signal is merely tilted and is controlled in a feedback manner.

Although the step motor 410 and the camera module 100 are physically connected to the axis 420 of the step motor in FIG. 4, the camera module 100 and the horizontal control device 400 are connected to each other by an electromagnetic method, Lt; / RTI >

7 is a conceptual diagram illustrating a connection state between a horizontal control device and an image sensor according to an embodiment of the present invention.

7, the image sensor 210 is attached to a rotary plate 230. The rotary plate 230 is connected to a step motor 610, which is an embodiment of the horizontal control device 600, It is connected. At this time, the horizontal control device 600 is constituted by the step motor 610, but any horizontal control device including the servo motor can be used if the rotation plate 230 can be rotated according to the horizontal control signal.

It is preferable to use a step motor which is advantageous for controlling the accurate rotation angle when the horizontal control signal contains the information of the magnitude of the inclined angle.

It is preferable to use a servo motor in a case where the horizontal control signal contains only information on a direction in which the horizontal control signal is merely tilted and is controlled in a feedback manner.

6, the step motor 610 and the rotation plate 230 attached with the image sensor 210 are physically connected to the shaft 620 of the step motor. However, The horizontal control device 600 may be connected.

If the horizontal control device 600 can rotate the image sensor 210 according to the horizontal control signal without the rotation plate 230, the rotation plate 130 may be omitted.

8 is a conceptual diagram for explaining a horizontal holding function of a camera module according to an embodiment of the present invention.

Referring to FIG. 8, when a conventional smartphone 800 is tilted 45 degrees to the left with respect to a vertical line, the image sensor of the camera module is also tilted to the left by 45 degrees. It can be seen that the image sensor 110 of the camera module 100 is kept horizontal even if the smartphone 810 with the automatic horizontal holding camera device is tilted by 45 degrees.

9 is a flowchart illustrating a method of maintaining a camera module in a horizontal position according to an exemplary embodiment of the present invention.

Referring to FIG. 9, in an operation method of an automatic horizontal holding camera apparatus according to an embodiment of the present invention, the horizontal sensor recognizes the horizontal state of the image sensor (S910).

At this time, the horizontal sensor generates horizontal state data and sends it to the horizontal control signal generation unit. The horizontal state data may be an angle in which the image sensor is inclined from the horizontal state or inclined with respect to the horizontal state.

In addition, the horizontal control signal generator generates a horizontal control signal (S920).

At this time, the horizontal control signal generator generates a horizontal control signal corresponding to the horizontal state data and sends it to the horizontal control device.

For example, if the horizontal state data contains only a tilted direction, the horizontal control signal may be a feedback control signal for driving the servo motor.

On the other hand, if the horizontal state data includes both the inclined direction and the inclined angle, the horizontal control signal may be a PWM (Pulse Width Modulation) signal for driving the stepping motor.

Further, the horizontal control device rotates the camera module (S930).

When the horizontal control signal is a feedback control signal for driving the servo motor, the servo motor, which is a horizontal control device, moves in a direction opposite to the tilt direction of the image sensor, and the horizontal sensor And the process is repeated until the image sensor is leveled (610).

On the other hand, when the horizontal state data contains the inclined direction and the inclined angle, and the horizontal control signal is the PWM signal for driving the step motor, the step motor as the horizontal control device rotates the image sensor in an inclined angle As a result, the image sensor is kept horizontal.

A gradated filter is effectively used to photograph a subject with a large difference in exposure such as a landscape photograph, but the direction of the gradation is fixed, so that the photographing portion should not be rotated unless the gradation filter is fixed.

In the present invention, since the entire camera module 100 is rotated in order to maintain the horizontal position, even if the gradient filter is built in the camera module 100 or mounted outside the camera module 100, Therefore, it is free from the restriction due to the rotation of the gradient filter, and is effective especially for the exposure control which can occur in the panoramic photographing.

In the case where the image sensor 110 of the camera module 100 is in the shape of a rectangle rather than a square, a fire hood, a partition wall having a hole with a rectangular shape or a similar effect has a vignetting effect The effect of suppressing the inflow of stray light, which is an unintended light, is minimized.

On the other hand, since the image circle formed through the lens in the process is transformed into a rectangular shape instead of a circular shape, the vignetting is rather disadvantageous in case of unintended rotation.

In the camera device according to the embodiment of the present invention, when the camera module 100 is physically fixed with the component reducing the mutual light and rotates together with the component, the ghosts and the lens flare can be effectively suppressed It has the advantage of being able to shoot horizontally.

10 is a flowchart illustrating a method of maintaining an image sensor in a horizontal position according to an embodiment of the present invention.

Referring to FIG. 10, in an operation method of an image sensor automatic horizontal hold camera apparatus according to an embodiment of the present invention, the horizontal sensor recognizes the horizontal state of the image sensor (S1010).

At this time, the horizontal sensor generates horizontal state data and sends it to the horizontal control signal generation unit. The horizontal state data may be an angle in which the image sensor is inclined from the horizontal state or inclined with respect to the horizontal state.

Also, the horizontal control signal generator generates a horizontal control signal (S1020).

At this time, the horizontal control signal generator generates a horizontal control signal corresponding to the horizontal state data and sends it to the horizontal control device.

For example, if the horizontal state data contains only a tilted direction, the horizontal control signal may be a feedback control signal for driving the servo motor.

On the other hand, if the horizontal state data includes both the inclined direction and the inclined angle, the horizontal control signal may be a PWM (Pulse Width Modulation) signal for driving the stepping motor.

Further, the horizontal control device rotates the image sensor (S1030).

When the horizontal control signal is a feedback control signal for driving the servo motor, the servo motor, which is a horizontal control device, moves in a direction opposite to the tilt direction of the image sensor, and the horizontal sensor And the process is repeated until the image sensor is leveled (610).

On the other hand, when the horizontal state data contains the inclined direction and the inclined angle, and the horizontal control signal is the PWM signal for driving the step motor, the step motor as the horizontal control device rotates the image sensor in an inclined angle As a result, the image sensor is kept horizontal.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100, 200: camera module 110, 210: image sensor
120, 220: lens 510: horizontal state data
520: horizontal control signal 600: horizontal control device
610: Step motor 620:
800: Smartphone without automatic leveling camera device
810: A smart phone having an automatic horizontal holding camera device

Claims (20)

A camera module including a camera lens, a filter, and an image sensor;
A horizontal sensor for recognizing a positional state corresponding to the image sensor;
A horizontal control signal generator for generating a horizontal control signal using a result of comparing the position state and the reference state; And
And a horizontal control device for rotating the camera module based on the horizontal control signal and controlling the camera module to maintain a horizontal position. The method according to claim 1,
The horizontal sensor
A gyroscope sensor, a gravity sensor, or an acceleration sensor. The method according to claim 1,
The horizontal control device
Determines the direction of rotation of the camera module based on the horizontal control signal, and performs the rotation in the direction of the camera module using the servo motor. The method according to claim 1,
The horizontal control device
Wherein the controller determines the angle of rotation of the camera module based on the horizontal control signal and performs the rotation using the stepping motor at the angle of the camera module. The method of claim 4,
Wherein the horizontal control device rotates the camera module at an angle between -180 degrees and 180 degrees. The method according to claim 1,
Wherein the horizontal control device is physically connected to the camera module. Claim 1
The camera module
A gradient filter,
Wherein the horizontal control device rotates the gradation filter and the camera module in the same direction and angle based on the horizontal control signal. Claim 1
The camera module
And a light removal unit for controlling the image circle in size and shape of the image sensor. A camera module including a camera lens, a filter, and an image sensor;
A horizontal sensor for recognizing a positional state corresponding to the image sensor;
A horizontal control signal generator for generating a horizontal control signal using a result of comparing the position state and the reference state; And
And a horizontal control unit for rotating the image sensor of the camera module based on the horizontal control signal and controlling the image sensor to maintain the horizontal position. Claim 9
The horizontal sensor
A gyroscope sensor, a gravity sensor, or an acceleration sensor. Claim 10
The horizontal control device
Wherein the control unit determines the rotation direction of the image sensor based on the horizontal control signal and performs rotation of the image sensor using the servo motor. Claim 10
The horizontal control device
Wherein the controller determines the rotation angle of the image sensor based on the horizontal control signal and performs rotation of the image sensor using a step motor. Claim 12
Wherein the horizontal control device rotates the camera module at an angle between -180 degrees and 180 degrees. Claim 9
Wherein the horizontal control device is physically connected to the image sensor. Claim 9
Wherein the horizontal control device is connected to the image sensor in an electromagnetic manner. Recognizing a horizontal state of the image sensor by the horizontal sensor;
Generating a horizontal control signal based on a result of the horizontal control signal generator comparing the horizontal state and the reference state; And
Rotating one of the camera module and the image sensor so that the horizontal control device maintains the horizontal in accordance with the horizontal control signal, and controlling one of the camera module and the image sensor to maintain the horizontal
Wherein the camera module and the image sensor are horizontally aligned. 18. The method of claim 16,
The step of generating the horizontal control signal
Wherein the controller generates the horizontal control signal including at least one of a rotation direction and a rotation angle of any one of the camera module and the image sensor. 18. The method of claim 17,
Wherein the step of controlling any one of the camera module and the image sensor to be horizontal
Wherein the control unit determines the direction of rotation of one of the camera module and the image sensor based on the horizontal control signal and rotates any one of the camera module and the image sensor using the servo motor. How to keep modules and image sensors level. 18. The method of claim 17,
Wherein the step of controlling any one of the camera module and the image sensor to be horizontal
Determining an angle of rotation of one of the camera module and the image sensor based on the horizontal control signal and performing the rotation using the stepping motor at any one of the camera module and the image sensor A method for holding a camera module and an image sensor in a horizontal position. 18. The method of claim 17,
Wherein the step of controlling any one of the camera module and the image sensor to be horizontal
And rotating the gradation filter and the camera module in the same direction and angle based on the horizontal signal.
KR1020150143780A 2015-01-16 2015-10-15 Automatic horizontal keeping camera apparatus and method for the same KR102017750B1 (en)

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Publication number Priority date Publication date Assignee Title
WO2021010528A1 (en) * 2019-07-18 2021-01-21 엘지전자 주식회사 Camera and control method therefor

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