KR200224061Y1 - Camera controlling apparatus for image mobile communication device - Google Patents

Abstract

The present invention relates to a camera control apparatus of an image mobile communication terminal. In the conventional image mobile communication terminal, since the camera (CAM) is fixed to stare only at the front side of the terminal, the subject is placed at an appropriate position in front of the camera. It is only possible to send the best image to the other side when it is present, and it is difficult for the user to check whether the user is optimally positioned in the center of the other side of the terminal screen. Inside), it is difficult to transmit an optimal image in which the user's figure is located at the center of the screen. Therefore, the present invention includes a camera with a built-in distance sensor that can measure the distance to the subject; A motor unit for controlling the direction of the camera at any angle of up, down, left and right; In the video codec unit which receives and processes the image captured by the camera, the video codec further includes an image recognition and a motor control unit which receives the screen occupancy ratio and direction information of the subject, and controls the motor unit. Therefore, the direction of the camera is rotated so that the subject is at the center of the screen so that an image having an optimal composition can be transmitted to the counterpart terminal.

Description

CAMERA CONTROLLING APPARATUS FOR IMAGE MOBILE COMMUNICATION DEVICE}

The present invention relates to a camera control apparatus of an image mobile communication terminal, and more particularly, to a camera control apparatus of an image mobile communication terminal that actively controls the direction of the camera so that the subject is always located at the center of the camera in response to the movement of the subject. It is about.

Since the development of wired telephones, communication technology has made rapid progress from radios capable of talking at short distances without a wired connection between two parties, to cordless phones for 900MHz and mobile phones capable of making calls even in high-speed cars.

In particular, in recent years, the functions of mobile phones, which have only stayed in simple voice transmission, have been gradually expanded to enable the transmission of text messages and various information as well as internet access. As mobile communication standards are released using high frequency bands to provide excellent sound quality and enable video communication, manufacturers of mobile communication terminals are in full swing to develop corresponding video mobile communication terminals.

In this case, the image mobile communication terminal is fixed in a conventional mobile communication terminal capable of voice communication as shown in FIG. 1 such that a small camera (CAM) for photographing a subject faces the front of the terminal. Is common.

Accordingly, when the mobile communication terminal is directed toward the subject to be photographed, image information is transmitted to the counterpart.

FIG. 2 is a block diagram showing the configuration of the internal control apparatus of the image mobile communication terminal configured as shown in FIG. 1. When the camera CAM fixed to the terminal body photographs a subject as shown in FIG. A video codec unit 10 which receives an input and converts and converts it into a digital signal; A baseband signal processor (MSM) 20 is configured to process the converted signal to be transmitted through the wireless transmitter 30.

Next, in order to perform video communication using the video mobile communication terminal configured as described above, first open the folded cover of the mobile communication terminal and press a phone number of the other party to be called to make a call connection.

Accordingly, the face image of the user is transmitted to the counterpart through the camera CAM attached to the terminal, and the face image of the counterpart is output to the screen of the mobile communication terminal.

However, since the camera CAM is fixed to stare only the front face of the terminal together with the screen of the terminal, the optimum image can be transmitted to the counterpart only when the subject is placed at the proper position in front of the camera.

In addition, since it is difficult for the user to check whether the user is optimally positioned in the center of the other terminal's screen, the user's image is displayed on the other side in a situation where the surrounding environment is not stopped and frequently moves (for example, inside a vehicle). There is a problem in that it is difficult to transmit an optimal image located at the center of the.

Accordingly, the present invention was created to solve the above-mentioned conventional problems, and the camera of the video mobile communication terminal actively controlling the direction of the camera so that the subject can always be located at the center of the camera in response to the movement of the subject. The object is to provide a control device.

1 is an exemplary view illustrating a camera configuration of a conventional video mobile communication terminal.

Fig. 2 is a block diagram showing the construction of an internal control device of an image mobile communication terminal in Fig. 1;

Figure 3 is a block diagram showing the internal configuration of a video mobile communication terminal capable of controlling the direction of the camera by the present invention.

4 is an exemplary view shown to explain a camera operation of an image mobile communication terminal in FIG.

*** Description of the symbols for the main parts of the drawings ***

100: motor unit 200: image recognition and motor control unit

In order to achieve the above object, the present invention provides a mobile communication terminal capable of video communication, comprising: a camera with a built-in distance sensor capable of measuring a distance from a subject; A motor unit for controlling the direction of the camera at any angle of up, down, left and right; The video codec unit for receiving and processing an image captured by the camera further includes an image recognition and a motor control unit which receives the screen occupancy ratio and direction information of the subject and controls the motor unit.

Hereinafter, with reference to the accompanying drawings an embodiment according to the present invention in detail as follows.

FIG. 3 is a block diagram illustrating an internal configuration of an image mobile communication terminal capable of controlling a direction of a camera according to the present invention. As shown in FIG. 3, a camera (MV_CAM) having a built-in distance sensor capable of measuring a distance from a subject and ; A motor unit (100) for controlling the direction of the camera (MV_CAM) at any angle of up, down, left and right; In the video codec unit 10 that receives and processes the image captured by the camera MV_CAM, the image recognition and motor control unit 200 receives the screen occupancy ratio and direction information of the subject and controls the motor unit 100. It further comprises a.

Here, the image recognition and motor control unit 200 uses a signal analyzed by the video codec unit 10 to distinguish between the subject and the background, and to what extent the subject occupies on the screen and occupies a predetermined percentage or less. In this case, it determines which direction the screen occupies is occupied.

Accordingly, the direction of the camera is controlled in the direction in which the subject moves by detecting whether the subject moves in the up, down, left, or right direction from the center of the screen.

That is, the motor unit 100 is controlled by the direction detected by the image recognition and the motor controller 200, and the image information of the camera MV_CAM moved by the control of the motor unit 100 is received in real time. When the subject is positioned in the center of the screen, the movement stops.

As a result, the camera tracks the subject and moves according to the movement of the subject.

FIG. 4 is an exemplary view for explaining a camera operation of an image mobile communication terminal in FIG. 3. Unlike the related art, the camera MV_CAM has a motor built therein so as to be rotated in up, down, left, and right directions. Consists of.

That is, the front view shown in (a) and the top view shown in (c) show left and right rotations of the camera, and the left and right views shown in (b) show up and down rotations.

In other words, if the screen occupancy ratio of the subject does not fall below a predetermined ratio set by the user (for example, about 70%), it is determined that the subject is not located at the center of the screen and searches for a direction in which the occupancy ratio is high.

That is, the high occupancy ratio on the left means that the camera direction is biased to the right, so that the image recognition and motor control unit 200 controls the motor unit 100 to direct the camera direction to the left side.

At this time, the degree of rotation of the camera can be arbitrarily set at the time of manufacture according to the screen occupancy rate of the subject, it is obvious that the rotational speed can also be set differently depending on the degree of movement of the subject.

Hereinafter, as described above, the image signal in which the subject is centered on the screen is compressed by the video codec unit 10 as in the prior art, and then the baseband signal processing apparatus 20 and the wireless transmitter 30 of the terminal pass through the base station. By transmitting to the terminal, a video call is made.

As described above, the camera control apparatus of the inventive image mobile communication terminal actively rotates the direction of the camera according to the movement of the subject so that the subject is at the center of the screen, so that an image having an optimal composition can be captured so that the other side can be captured. There is an effect that can provide a better image to the terminal.

Claims (3)

A mobile communication terminal capable of a video call, comprising: a camera with a built-in distance sensor for measuring a distance to a subject; A motor unit for controlling the direction of the camera at any angle of up, down, left and right; The video codec unit for receiving and processing the image captured by the camera, the image mobile communication terminal further comprises an image recognition and motor control unit for controlling the motor unit by receiving the screen occupancy ratio and direction information of the subject, etc. Camera controls. The apparatus of claim 1, wherein the camera is configured to be rotatable in up, down, left, and right directions in hardware. The apparatus of claim 1, wherein the image recognition and motor control unit is configured to determine a rotation speed and a rotation amount of the camera according to the screen occupancy ratio and the degree of movement of the subject.