KR20130069165A

KR20130069165A - Control method of mobile camera sensor having security camera application

Info

Publication number: KR20130069165A
Application number: KR1020110136753A
Authority: KR
Inventors: 우재근
Original assignee: 엘지이노텍 주식회사
Priority date: 2011-12-16
Filing date: 2011-12-16
Publication date: 2013-06-26

Abstract

PURPOSE: A control method of a mobile terminal including a security camera application is provided to reduce power consumption even when operating a security camera application. CONSTITUTION: Operation of a security camera application is judged(S200). When the security camera application is operated, detection operation is performed until a setting event in an image sensor included in a mobile terminal is generated(S220). Before the setting event is generated, the detection operation is performed by reducing FPS(Frame Per Second) of the image sensor and reducing a size of an image. If the setting event is judged as generated as a result of the detection operation result, the FPS and size of the image of the image sensor is recovered to the original state. [Reference numerals] (AA) Start; (BB) Finish; (S200) Security camera application operated?; (S210) FPS(Frame Per Second) lower image size; (S220) Definite saving event sensing; (S230) Saved event generated?; (S240) FPS(Frame Per Second) higher image size; (S250) Saving image

Description

Control method of mobile terminal including security camera application {CONTROL METHOD OF MOBILE CAMERA SENSOR HAVING SECURITY CAMERA APPLICATION}

The present invention relates to a control method of a mobile terminal including a security camera application, and more particularly, to a control method of a mobile terminal including a security camera application capable of detecting an external intruder at low power.

Recently, with the spread of smart phones, various applications using cameras included in smart phones are increasing. Application means application software installed in the mobile terminal. Among them, more and more applications for realizing the same effect as a real security camera using a camera provided in a smartphone.

However, in the case of a real security camera, the power supply can be made continuously, but in the case of a smart phone, there is a limit on the battery, and in order to continuously monitor an intruder such as a security camera, power consumption is considerable because the camera module must be operated continuously. Do.

Therefore, even in the case of a smartphone running a security camera application, there is a problem that it is difficult to perform the security function for a long time without connecting the battery charger.

1 illustrates an operation when a security camera application is executed in a conventional smartphone.

First, a camera driving message for the security camera application is input (S10). This is done when the user touches the security camera application icon displayed on the smartphone.

Then the camera module is initialized and camera preview starts (S20). That is, the clock module CLK, SYNC, and DATA signals of the image sensor are output for the camera module to operate normally.

Next, the security camera application through the camera image input is operated (S30), at which time power consumption is greatly generated due to the camera input / output (I / O) driving.

When the security camera application operates as described above, when an intruder is detected or other events occur, the security camera application stores or alerts the user (S40).

In the case of a security camera application using a conventional smartphone, the security program could only be driven by receiving an input image from the camera module. In this case, the camera output signal must be continuously received during the security program operation, which causes a significant power consumption.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a control method of a mobile terminal that can reduce power consumption even when operating a security camera application.

A control method of a mobile terminal according to an embodiment of the present invention for achieving the above object is a control method of a mobile terminal comprising a security camera application, comprising: determining whether the security camera application operation; When the security camera application is operating, performing a sensing operation until a setting event occurs in the image sensor included in the mobile terminal; performing the sensing operation, the setting event occurs Previously, the sensing operation is performed by lowering the frame per second (FPS) of the image sensor and reducing the image size.

And if it is determined that the setting event occurs as a result of the sensing operation, returning the FPS and the image size of the image sensor to their original state.

The method may further include storing the captured image after the FPS and the image size of the image sensor are returned to their original state.

The setting event may occur when motion of an image is detected.

In the performing of the sensing operation, the sensing operation may be performed by controlling the image sensor to limit the input / output (I / O) output of the image sensor.

The security camera application may be an application designed to notify a user when a motion of an external intruder is detected.

The method may further include outputting a warning sound or a warning sentence for notifying the user of the detection of an external intruder when the setting event occurs.

The mobile terminal may be a smart phone or a tablet PC.

According to the control method of the mobile terminal according to the configuration of the present invention, even when operating the security camera application it is possible to significantly reduce the power consumption to enable continuous security.

1 is a view showing an operation when the security camera application is executed in a conventional smartphone,
2 is a view for explaining in detail the control method of a mobile terminal according to an embodiment of the present invention, and
3 is a flowchart illustrating a flow of a method for controlling a mobile terminal according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

2 is a view for explaining a control method of a mobile terminal according to an embodiment of the present invention in detail. Although each block is generally indicated in the operation order, reference numerals 120 and 130 may be processed simultaneously or in a different order.

First, the security camera application is operated (100). Here, the security camera application refers to an application that implements the same surveillance function as a real security camera in a smartphone. When the security camera application operates, the image sensor of the camera module is operated in a security mode through a communication method such as I2C (110). Operation in the security mode refers to a mode for minimizing power consumption in an image sensor that performs a function of a security camera application.

When entering the security mode, the I / O (input / output) output is stopped to reduce power consumption (120) and the analog stage inside the sensor is controlled to reduce the frame per second (FPS) and reduce the image size (130). . This minimizes power consumption in detecting intruders and determining the occurrence of configuration events. Here, detecting the intruder means capturing the movement of the subject by the image sensor. The occurrence of a setting event refers to a case where a security element is detected including a movement of a subject.

The image sensor entering the security mode detects an intruder (140). In this case, the image sensor detects the movement of the subject with the minimum FPS and the image size, thereby greatly reducing the power consumption.

If the intruder is not detected, the image sensor continuously detects the movement of the subject with the minimum FPS and the image size, but if the intruder is detected, the FPS is increased again and the image size is enlarged (150). And I / O output (160) to operate the camera module normally. As a result, the image sensor can obtain a high quality screen and the user can identify the intruder through the captured image.

The I / O output here refers to a clock CLK, a sync SYNC, a data DATA signal, and the like. In the above description, the mobile terminal may be a smartphone or a tablet PC.

According to the control method of the mobile terminal according to an embodiment of the present invention by the above configuration it is possible to continue to execute the security camera application, which is a problem because the power consumption of the existing smart phone is severe. That is, according to the control method of the mobile terminal according to an embodiment of the present invention, power consumption is reduced, so that an intruder can be searched for a long time by using the mobile terminal.

3 is a flowchart illustrating a flow of a control method of a mobile terminal according to an embodiment of the present invention.

First, it is determined whether the security camera application is operating (S200). If the security camera application does not work (S200-No). Wait for the security camera application to run.

When the security camera application operates (S200-Yes) to reduce the frame per second (FPS) and reduce the image size (S210). Lowering the FPS and reducing the image size can minimize the operating load on the camera module.

Thereafter, whether or not a setting event occurs is detected (S220). The setting event may occur when an intruder's movement is detected in the security camera application. That is, when the movement of the subject is detected by the image sensor, a flag indicating that the setting event is detected may be turned on, and at this point, it is determined that the intruder movement is detected.

If no setup event occurs (S230-No), that is, if an intruder's movement is not detected, the setup event detection operation continues (S220), and if a setup event occurs (S230-Yes), the camera module Run it back to its original state. That is, after increasing the FPS and the image size to improve the resolution, the intruder continuously photographs the movement (S240).

Finally, the captured image is stored in the storage module provided in the mobile terminal so that the user can check (S250).

Although not shown in FIG. 3, when an intruder is detected, the method may further include outputting a warning sound or a warning sentence for notifying the detection of the external intruder.

When operating a security camera application as described above, the security function is performed only inside the sensor, and while the camera's analog receiver receives the camera input signal while the function is being performed, the digital signal processing block receives the input signal until the intruder is detected from the input signal received from the receiver. / O Do not export output. That is, while the security function is performed, the camera cannot be known from the outside and power consumption due to I / O is reduced.

In the foregoing description, each component and / or function described in various embodiments may be implemented in combination with each other, and those skilled in the art may recognize the present invention described in the claims below. It will be understood that various modifications and variations can be made in the present invention without departing from the spirit and scope.

Claims

In the control method of a mobile terminal including a security camera application,
Determining whether the security camera application is operating;
When the security camera application is operating, performing a sensing operation until a setting event occurs in the image sensor included in the mobile terminal,
The performing of the sensing operation may include:
Before the setting event occurs, the control method of the mobile terminal, characterized in that the sensing operation is performed by lowering the frame per second (FPS) of the image sensor and reducing the image size.

The method of claim 1,
And if it is determined that the setting event occurs as a result of the sensing operation, returning the FPS and the image size of the image sensor to their original state.

The method of claim 2,
And storing the photographed image after the FPS and the image size of the image sensor are returned to their original states.

The method of claim 1,
The setting event is a control method of a mobile terminal, characterized in that occurs when the movement of the image is detected.

The method of claim 1,
The performing of the sensing operation may include:
And controlling the image sensor to limit input / output (I / O) output of the image sensor to perform the sensing operation.

The method of claim 1,
The security camera application is a control method of a mobile terminal, characterized in that the application designed to notify the user when the movement of the external intruder is detected.

The method of claim 1,
And outputting a warning sound or a warning sentence for informing a user of the detection of an external invader when the setting event occurs.

The method of claim 1,
The mobile terminal is a control method of a mobile terminal, characterized in that a smart phone (tablet PC) or a tablet PC (tablet PC).