KR101177892B1 - Mobile terminal for saving battery of app, and control method using the same - Google Patents

Abstract

PURPOSE: A portable terminal for controlling battery consumption of an application and a controlling method thereof are provided to prevent unnecessary battery consumption of a portable terminal by operating an application for vehicle number recognition. CONSTITUTION: A touch screen(151) displays an interface of an application for vehicle number recognition in response to touch input. An acceleration sensor(145) detects an angle between a touch screen side and a ground. A controller(180) operates the touch screen in order to display an interface of the application. The controller interrupts operation of the application and switches a current mode of the touch screen into a power saving mode.

Description

Mobile terminal for controlling battery consumption of an app and its control method {Mobile terminal for saving battery of App, and control method using the same}

The present invention relates to a mobile terminal and a control method thereof, and more particularly, to control an app's battery consumption by minimizing battery consumption for character recognition by driving an app only when the mobile terminal recognizes a license plate. A terminal, and a control method thereof.

BACKGROUND ART In order to delinquent vehicle taxes, penalties, and various vehicle-related taxes, or to crack down on illegal vehicles, portable terminals capable of performing vehicle number recognition are spread to public institutions and enforcement officers.

These portable terminals can image the license plate of the suspected vehicle as the officer moves through the jurisdiction, and can perform vehicle inquiry with the vehicle information database server by performing character recognition on the photographed license plate.

The vehicle inquiry may be made from an administrative network vehicle inquiry server that tracks a wanted, delinquent, stolen or stolen vehicle, a police agency server, or a server operated based on the consent or agreement of the individual operating the vehicle (e.g., non-life insurance company, liability insurance company, and The lant may be a server of a company), and the vehicle inquiry result may be provided to the mobile terminal again.

For the vehicle inquiry, the mobile terminal should capture the vehicle license plate and perform image processing on the captured image to obtain a vehicle number consisting of numbers and letters, and provide the vehicle number to the vehicle information database server. . At this time, the image processing for the image corresponds to the job that consumes the most power in the mobile terminal is limited in processing speed and capacity. The vehicle license plate area is determined from the image captured by the mobile terminal, and resized to a certain size, and then character recognition is performed. This processing operation causes excessive burden on various control logics such as a processor and a memory embedded in the mobile terminal. This speeds up the battery consumption of mobile handsets.

At present, a large number of enforcement officers who perform vehicle inquiries using a mobile terminal have a lot of vehicle inquiries, for example, when performing vehicle inquiries on more than 1,000 vehicles, when the available time of the mobile terminal battery is only 3-4 hours. There are also many, during the working hours, there is an inconvenience to be replaced with a spare battery. When selecting any one of the keys provided in the mobile terminal for this problem, a method of driving an app for vehicle inquiry has been proposed, but the current mobile terminal has been developed in the direction of using the touch screen, the home button Except for the (home button), you don't have the key to define your app's launch.

An object of the present invention is to provide a mobile terminal and a control method for controlling the battery consumption of the battery app to minimize unnecessary battery waste by running the app only when performing the license plate recognition using the mobile terminal.

According to the present invention, the above object is responsive to a touch input, the touch screen for displaying the interface of the app for vehicle number recognition, an acceleration sensor for detecting the angle of the surface of the touch screen to the ground, and the angle in advance When included in the set reference angle, it is determined by the environment in which the app is driven, and is achieved by the control unit for driving the touch screen for displaying the app and the interface of the app.

The above object is to determine the rotation angle of the mobile terminal on the basis of when the surface of the touch screen of the mobile terminal is perpendicular to the ground using an acceleration sensor, the rotation angle is a preset reference When included in the angle, driving the app for vehicle number recognition, and driving the touch screen to display the interface of the app.

According to the invention it is possible to prevent unnecessary battery consumption in the mobile terminal by running the app for the vehicle number recognition only when located at an angle capable of performing the vehicle number recognition by the mobile terminal.

1 and 2 are conceptual views illustrating a battery saving method of a mobile terminal according to the present invention.
3 is a block diagram of a portable terminal according to an embodiment of the present invention.
4 illustrates an example of a user interface displayed on a touch screen.
5 is a flowchart illustrating a method of controlling battery consumption of an app according to an embodiment of the present invention.

The vehicle information database server referred to in the present invention is an administrative network vehicle inquiry server for tracking a wanted, arrears, stolen or escaped vehicle, a police agency server, or a server operated based on the agreement or agreement of an individual who operates the vehicle (eg, non-life insurance). Business, liability insurance company, and landlord).

The mobile terminal referred to in the present invention is a device having a function capable of capturing still images or moving images, and hardware and software, and capable of capturing a personal digital assistant (PDA), a general mobile phone, a smartphone, and other still images or moving images. And a portable device capable of transmitting a still image or a moving image captured by wireless communication to a vehicle information database server. In addition, the portable terminal referred to in the present invention should be an app that can extract the vehicle number by performing image recognition, image processing, character recognition.

In the present invention, the display device and the touch screen provided in the portable terminal may be described as being mixed with each other. Basically, since the display apparatus may receive user input while displaying various interfaces for the user, the display apparatus may be described differently according to its function. Therefore, the display apparatus and the touch screen will be described with the same reference numerals.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 and 2 are conceptual views illustrating a battery saving method of a mobile terminal according to the present invention.

First, FIG. 1 illustrates an example in which the mobile terminal 100 is not used, and illustrates a case where the touch screen of the mobile terminal 100 is vertically positioned on the ground. In general, when the display surface of the touch screen of the mobile terminal 100 is positioned perpendicular to the ground, the user corresponds to the case where the mobile terminal 100 is stored in a pocket, that is, not used. In this case, it may be regarded that the user does not perform the vehicle inquiry using the mobile terminal 100.

On the other hand, the touch screen of the mobile terminal 100 may be located parallel to the ground. This case corresponds to the case where the mobile terminal 100 is located on a desk or in a bag, and it can also be considered that the mobile terminal 100 is not used for vehicle inquiry.

Next, referring to FIG. 2, when the portable terminal 100 captures the license plate 10 of the vehicle by the user, the portable terminal 100 should rotate the camera in the direction of the license plate for imaging the license plate. . In this case, the touch screen of the mobile terminal 100 may form a predetermined angle with the opposite direction of the ground. The angle at this time is defined as a reference angle θ.

The reference angle θ is a reference line TL when the user photographs the vehicle license plate using the mobile terminal 100 or when the user performs a vehicle inquiry using the mobile terminal 100. It represents the angle with which. The reference line TL represents a direction opposite to the ground, and the reference angle θ corresponds to an angle formed with the reference line TL. The reference angle θ may be in a range of 20 degrees to 60 degrees, and at a smaller angle, it may be determined that the mobile terminal 100 does not image the license plate. However, the vehicle inquiry may be performed at an angle outside the reference angle θ.

Therefore, when the angle between the mobile terminal 100 and the reference line TL is within the reference angle θ, it is preferable that all the apps for vehicle inquiry are driven. When the mobile terminal 100 achieves the reference angle θ, the app photographs the license plate of the vehicle, performs character recognition on the captured image, or sends the character recognition result to the vehicle information database server (not shown). Send and receive the results.

On the other hand, when the mobile terminal 100 is less than the reference angle (θ), for example, when the display surface of the touch screen of the mobile terminal 100 is parallel to the ground, the mobile terminal 100 does not image the license plate. Can be judged. In general, when the display surface of the touch screen of the mobile terminal 100 is level with the ground, it is difficult to photograph the license plate of the vehicle, and even if the vehicle license plate is photographed, character recognition of the license plate is almost impossible. In this case, the mobile terminal 100 may minimize the battery consumption of the mobile terminal 100 by switching to a standby mode (or a power saving mode) or deactivating a function for image processing among the functions of the app.

Referring to FIG. 3, the mobile terminal 100 according to the present invention includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, and an output unit. 150, a memory 160, an interface unit 170, a controller 180, and a power supply unit 190 may be included. Such components may be configured by combining two or more components into one component, or by dividing one or more components into two or more components as necessary when implemented in an actual application.

The wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 113, a wireless Internet module 115, a short distance communication module 117, and a GPS module 119.

The broadcast receiving module 111 receives at least one of a broadcast signal and broadcast related information from an external broadcast management server through a broadcast channel. At this time, the broadcast channel may include a satellite channel, a terrestrial channel, and the like.

The mobile communication module 113 transmits and receives a radio signal to at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to a voice call signal, a video call signal, or a text / multimedia message transmission / reception.

The wireless Internet module 115 refers to a module for wireless Internet access, and the wireless Internet module 115 can be embedded in the mobile terminal 100 or externally. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short-range communication module 117 refers to a module for short-range communication. Bluetooth, radio frequency identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, and the like can be used as the short distance communication technology. A GPS (Global Position System) module 119 receives position information from a plurality of GPS satellites. The A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 123. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the touch screen 151.

The camera 121 may be driven when the angle between the mobile terminal 100 and the reference line TL is in a range of 20 degrees to 60 degrees. For example, the camera 121 may determine whether or not the power is supplied or driven when the intermittent member performing the vehicle inquiry photographs the vehicle license plate. The camera 121 operates only when the mobile terminal 100 achieves the reference angle θ, thereby minimizing battery consumption of the mobile terminal 100.

The image or image frame captured by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. The camera 121 may be equipped with two or more cameras according to the configuration of the terminal. However, in the present invention, it is preferable to determine whether the camera 121 is driven by applying the reference angle θ only to the camera that does not face the user, that is, the camera that faces outward for imaging the license plate.

When the user looks at the touch screen 151 of the mobile terminal 100, whether the internal camera facing the user is driven may be driven when the mobile terminal 100 achieves the reference angle θ, or not It may not.

The microphone 123 receives an external sound signal by a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 113 and output when the voice data is in the call mode.

The user input unit 130 generates key input data that the user inputs to control the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, a finger mouse, and the like.

The sensing unit 140 senses the current state of the portable terminal 100 such as the open / close state of the portable terminal 100, the position of the portable terminal 100, Thereby generating a sensing signal.

The sensing unit 140 may include a proximity sensor 141, a pressure sensor 143, and an acceleration sensor 145. The proximity sensor 141 may detect the presence or absence of an approaching object or an object present in the vicinity without mechanical contact. The proximity sensor 141 may detect a proximity object by using a change in an alternating magnetic field or a change in a static magnetic field, or by using a change rate of capacitance. Two or more proximity sensors 141 may be provided according to the configuration aspect.

The pressure sensor 143 may detect whether pressure is applied to the portable terminal 100, the magnitude of the pressure, and the like. The pressure sensor 143 may be installed at a portion where the pressure of the portable terminal 100 is required depending on the use environment. If the pressure sensor 143 is installed on the touch screen 151, the touch input through the touch screen 151 and a greater pressure than the touch input are applied according to the signal output from the pressure sensor 143. The pressure touch input can be identified.

The acceleration sensor 145 converts an acceleration signal in one direction into an electrical signal, and is widely used with the development of micro-electromechanical systems (MEMS) technology. The acceleration sensor 145 measures the acceleration of a large value embedded in an airbag system of a vehicle and used to detect a collision. There are many different types of measurements. The acceleration sensor 145 is usually configured by mounting two or three axes in one package, and in some cases, only one Z axis is required depending on the use environment. Therefore, when the acceleration sensor in the X-axis direction or the Y-axis direction is used instead of the Z-axis direction for some reason, the acceleration sensor may be mounted on the main substrate by using a separate piece substrate.

The acceleration sensor 145 detects an angle formed between the touch screen 151 and the reference line TL of the mobile terminal 100. The detection result of the acceleration sensor 145 is provided to the controller 180, and the controller 180 determines whether the mobile terminal 100 achieves the reference angle θ based on the detection result of the acceleration sensor 145. .

The controller 180 may wake-up when the mobile terminal 100 achieves the reference angle θ, or drive an app for vehicle inquiry.

The controller 180 may include one or two or more processors. The controller 180 determines whether the angle measured by the acceleration sensor 145 corresponds to the reference angle θ when the app for vehicle inquiry is selected through the touch screen 151, and determines whether the app corresponds to the reference angle θ. Can be driven or not.

On the other hand, when the mobile terminal 100 deviates from the reference angle θ while the app for vehicle tracking is driven, the controller 180 saves only the functions of the camera 121 and the app related to the camera 121. You can switch to the mode or turn it off.

This is in case the user of the mobile terminal 100 extracts the vehicle number from the camera photographed image and then transmits the vehicle number to the vehicle information database server (not shown). When the user provides the extracted vehicle number to the vehicle information database server, the mobile terminal 100 may deviate from the reference angle θ, and at this time, switch all functions of the app for vehicle tracking to the power saving mode or turn off. There is no need.

The controller 180 drives an app and can process a task requested by the driven app. For example, the controller 180 extracts a vehicle license plate area from an image captured by the camera 121, resizes the extracted vehicle license plate area to a predetermined size, and performs character recognition on the resized image to obtain a vehicle number. Can be extracted.

In this case, the app driven by the controller 180 may have the following functions.

-Down-

1) Request to drive the camera 121 to the controller 180.

2) When the camera 121 is driven, the license plate area extraction is performed on the image captured by the user. Extraction of the license plate area may take into account the border shape of the license plate, the color of the license plate letters and numbers, and the color inside the license plate.

3) Perform character recognition on the license plate area.

4) The character recognition result is transmitted to the connection path of the preset vehicle information database server. At this time, the app may request the use of the wireless communication unit 110 to the controller 180.

5) The user interface is displayed on the touch screen 151. The user interface may include a menu for transmitting the extracted vehicle number to the vehicle information database server, a menu for requesting imaging of the camera 121, a text recognition menu, and a menu for displaying the location of another neighboring user on an electronic map. have.

Here, the menu for displaying the location of the other user on the electronic map is a menu for displaying the location of the enforcement officer and the other public officials on the electronic map using the mobile terminal 100 to perform a vehicle inquiry for the vehicle in the jurisdiction, When several officers share the jurisdiction jointly and crack down on it, it is possible to cooperate and share with each other, and to find out the area where the crackdown has not been done and to handle the crackdown work quickly and easily.

In addition, the controller 180 typically controls the operation of each unit to control the overall operation of the portable terminal 100. For example, voice communication, data communication, video communication, and the like. Preferably, the controller 180 may include a multimedia playback module 181 for multimedia playback, and an app driving control module 182. The multimedia playback module 181 may be configured in hardware in the controller 180 or separately from software in the controller 180. [

The app driving control module 182 determines whether the angle measured by the acceleration sensor 145 with respect to the surface and the ground of the touch screen 151 falls within the reference angle θ range. When the angle measured by the acceleration sensor 145 is included in the reference angle θ, the app driving control module 182 determines that the app can photograph the license plate of the app, and activates the hardware and software requested by the app. You can switch to In this case, the app driving control module 182 may also switch the touch screen 151 displaying the interface of the app to the on state.

On the contrary, when the angle measured by the acceleration sensor 145 is out of the reference angle θ, the app driving control module 182 may determine that the app cannot photograph the license plate. In this case, the app driving control module 182 may switch the touch screen 151 to a power saving mode or off, and may turn off some of the functions of the app to the power saving mode to block unnecessary battery waste.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a touch screen 151, an audio output module 153, an alarm unit 155, and a haptic module 157.

The touch screen 151 displays and outputs information processed by the mobile terminal 100. For example, when the portable terminal 100 is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the portable terminal 100 is in the video communication mode or the photographing mode, the photographed or received images can be displayed individually or simultaneously, and the UI and the GUI are displayed.

The audio output module 153 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 153 outputs sound signals related to functions performed in the portable terminal 100, for example, a call signal reception tone, a message reception tone, and the like. The sound output module 153 may include a speaker, a buzzer, and the like.

The alarm unit 155 outputs a signal for notifying the occurrence of an event of the portable terminal 100. Examples of events occurring in the portable terminal 100 include call signal reception, message reception, and key signal input. The alarm unit 155 may output a signal for notifying occurrence of an event in a form other than an audio signal or a video signal.

The memory 160 may store a program for processing and controlling the control unit 180 and may store a function for temporarily storing input or output data (e.g., a phone book, a message, a still image, .

In addition, the memory 160 provides temporary storage space required by the app for vehicle inquiry. In this case, the memory 160 loads an image captured by the camera 121, extracts a license plate area from the loaded image, and provides a temporary storage space necessary for extracting a vehicle number from the license plate area to the app. can do.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM , And a ROM. ≪ / RTI >

The interface unit 170 serves as an interface with all external devices connected to the portable terminal 100. Examples of external devices connected to the mobile terminal 100 include a wired / wireless headset, an external charger, a wired / wireless data port, a memory card, a memory card, a SIM / UIM card, and the like, and an audio I / O (Input). / Output) terminal, video I / O (Input / Output) terminal, earphone, and the like. The interface unit 170 receives data from the external device or receives power from the external device and transmits the data to each component in the portable terminal 100 so that data in the portable terminal 100 can be transmitted to the external device . The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

4 illustrates an example of a user interface displayed on a touch screen.

Referring to FIG. 4, the app may display the jurisdiction of the touch screen 151 and the positions of other intermittent officers (or officials) located in the jurisdiction in real time.

In FIG. 4, the entire jurisdiction ranges from A to F, and three intermittent officers 201, 202, and 203 are in charge of the jurisdiction. Zones A, B, and F are areas where the interrogator currently conducts secondary inquiries, while Zones C, D, and E correspond to areas where the intermediary should perform secondary inquiries.

At this time, if the location of the user of the mobile terminal 100 corresponds to Zone A, the enforcement officer may select one of Zone C and Zone D as the next work place.

In this case, the user of the mobile terminal 100 may notify the other control members 202 and 203 of their next work place, and after the other control members 202 and 203 recognize this, they may select their next work place.

5 is a flowchart illustrating a method of controlling battery consumption of an app according to an embodiment of the present invention.

First, the controller 180 calculates an angle formed between the mobile terminal 100 and the reference line TL by referring to the sensing value of the acceleration sensor 145 (S301). Next, the controller 180 determines whether the portable terminal 100 achieves the calculated angle and the reference angle θ (S302). The reference angle θ means when the mobile terminal 100 exists in a range of 20 degrees to 60 degrees.

Next, the controller 180 limits the driving of the app when the mobile terminal 100 does not achieve the reference angle θ (S303). In this case, the controller 180 may switch the function of the app to a power saving mode or off.

Next, when the mobile terminal 100 achieves the reference angle θ, the controller 180 switches the app to the activated state and activates the touch screen 151 (S304). Next, the controller 180 determines whether the camera 121 is driven to capture an image (S305). The determination of whether the camera 121 captures an image may be determined based on whether the app requests to drive the camera. In this case, when the camera 121 drives to capture an image, the controller 180 executes an application program code to perform image processing (S307), extracts a vehicle number (S308), and extracts the extracted vehicle number. The vehicle may be transmitted to a lane-defense database server (not shown) (S309). When transmitting the extracted vehicle number to the vehicle number database server, the controller 180 may drive the wireless communication unit 110 to transmit the extracted vehicle number to a preset connection path (connection path of the vehicle information database server) in the app. .

On the other hand, if the driving of the camera 121 is not confirmed, the controller 180 determines whether the app transmits the extracted vehicle number to the vehicle number database server (S306), and transmits the vehicle number to the vehicle number database. If it is determined that the determination is made to return to step S304, and if it is determined that the vehicle number is not transmitted, the process returns to step S301.

100: mobile terminal θ: reference angle
TL: baseline

Claims (12)

delete delete delete delete A touch screen responsive to a touch input and displaying an interface of an app for vehicle number recognition;
An acceleration sensor detecting an angle of the surface of the touch screen to the ground; And
And a controller configured to determine the environment in which the app is driven when the angle is included in a preset reference angle, and to drive the touch screen to display the app and the interface of the app.
The control unit,
When the angle is out of the reference angle, the driving of the app is stopped, the touch screen displaying the interface of the app is put into a power saving mode,
And a wireless communication unit for receiving a location of another mobile terminal in which the app for vehicle number recognition is installed.
The controller may be configured to display an electronic map on the touch screen and to display the location of the other mobile terminal on the displayed electronic map.
The electronic map,
The mobile terminal for controlling the battery consumption of the app, characterized in that the jurisdiction for performing the vehicle number identification is displayed to be distinguishable. delete delete Determining a rotation angle of the mobile terminal based on when the surface of the touch screen of the mobile terminal is perpendicular to the ground using a speed sensor;
Driving an app for vehicle number recognition when the rotation angle is included in a preset reference angle;
Driving the touch screen to display an interface of the app;
Stopping driving of the app when the rotation angle is out of the reference angle;
Switching the touch screen to a power saving mode when the rotation angle is out of the reference angle;
Driving the app,
Displaying the location of the other mobile terminal in which the app for the vehicle number is installed on the electronic map: further comprising:
The app,
How to control the battery consumption of the app, characterized in that the character recognition for the license plate. delete delete delete Determining a rotation angle of the mobile terminal based on when the surface of the touch screen of the mobile terminal is perpendicular to the ground using a speed sensor;
Driving an app for vehicle number recognition when the rotation angle is included in a preset reference angle;
Driving the touch screen to display an interface of the app;
Stopping driving of the app when the rotation angle is out of the reference angle;
Switching the touch screen to a power saving mode when the rotation angle is out of the reference angle;
Driving the app,
Displaying the location of the other mobile terminal in which the app for the vehicle number is installed on the electronic map: further comprising:
The electronic map,
The jurisdiction in which the vehicle number recognition is performed is displayed so as to be distinguishable.

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