KR101408036B1 - Method and Device for Video Call - Google Patents

Abstract

The present invention provides a method for a caller and a called party to perform a video call after confirming their own state before they show themselves to the other party. To this end, the caller's picture of the caller being photographed in real time is displayed on the display of the caller's mobile phone, and the caller's phone number is selected on the display of the caller's mobile phone, and a video call is made, and until the caller receives the call, The display of the caller being photographed in real time is displayed on the cellular phone display of the called party.

Description

[0001] The present invention relates to a method and a device for video call,

The present invention relates to a video call. More specifically, the present invention relates to a method of allowing a caller and a called party to confirm their own appearance before a user shows his or her own appearance in a video call.

Controlling the camera in a mobile phone affects the stability of the application due to time delay or hardware control. Further, there is a problem that the video call is abnormally terminated due to unstable interlock between the camera control and the video call application installed in the mobile phone.

In the present invention, a method is provided in which a caller and a receiver of a video call can confirm their own appearance before showing their own image to the other party.

Specifically, the caller may check his / her face or surrounding environment before connecting the video call, and then try to make a video call, and the called party may check his / her face or surrounding environment before approving the video call incoming .

The present invention also provides a method of seamlessly connecting camera control and video call applications.

According to another aspect of the present invention, there is provided a method for performing a video call in a mobile phone, the method comprising: displaying, on a caller's mobile phone display, Selecting a call destination number on the caller's mobile phone display on which the caller's picture is displayed and transmitting a video call; And displaying a state of the caller being photographed in real time on the caller's mobile phone display and a state of the caller being photographed in real time on the caller's mobile phone display until the called video call is received by the called party.

Preferably, when the called mobile phone receives a video call call, the front camera mounted on the called mobile phone is driven.

Preferably, the calling party and the called party can use a video processing function supported by their respective mobile phones to give a special effect to the appearance of each mobile phone display or to select a substitute image.

Preferably, when the called party receives the originated video call, the video call is connected, the caller receives the video displayed on the called mobile phone display, the called party receives the video displayed on the calling mobile phone display, .

Preferably, when the caller operates the video call application, the front camera of the caller's mobile phone is driven, and the image of the caller being photographed in real time is automatically adjusted to the entire screen size of the calling mobile phone display. For this purpose, a screen size used as a full screen in a mobile phone display is standardized and stored in advance in an application framework of a mobile phone.

In another preferred embodiment of the present invention, the mobile phone displays a user's real time in front of the display of the mobile phone in real time until a call is received by the front-side camera of the mobile phone when the mobile phone sends a video call, Wherein the front camera is automatically operated upon receipt of an incoming call, and the user is displayed on the front face of the display in real time until the use is received.

As a preferred effect of the present invention, the caller tries to make a video call after checking his / her face or surrounding environment before connecting the video call, and the called party requests his or her face or surrounding environment Can be checked.

The caller can check his / her appearance before receiving a call even in case of a sudden video call, check his / her appearance through a mobile phone, and apply special effects (eg, Photoshop processing) It has the advantage of being more enjoyable and comfortable to use.

In addition, according to the present invention, even when switching from the Preview screen to the video call screen, it is not required to perform an operation such as resizing, so that a smooth video call connection can be performed, and a screen change is slowed while performing a resize operation It has the effect of solving difficult problems.

1 and 2 illustrate an internal structure of a cellular phone for providing a function of confirming a state of a user himself / herself by using a cellular phone during a video call according to a preferred embodiment of the present invention.
FIG. 3 is a flowchart illustrating a method of confirming the appearance of a caller and a called party before a video call is performed according to a preferred embodiment of the present invention. 4 (a) to 4 (h) illustrate an embodiment of performing a video call, which is a preferred embodiment of the present invention.
4 (a) to 4 (h) illustrate an embodiment of performing a video call, which is a preferred embodiment of the present invention.
FIG. 5 illustrates an embodiment of performing a video call in a called mobile phone, according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure of the invention for clarifying the technical idea of the present invention will be described in detail with reference to the accompanying drawings based on the embodiments of the present invention, It is to be understood that the same reference numerals are given to other drawings and that elements of other drawings may be cited when necessary in the description of the drawings.

In the following, a mobile phone is carried as an example of implementing a video call, but this is an example only for understanding, and can be implemented in a mobile phone, a smart phone, a handheld device, a BlackBerry, a PDA, a notebook, a computer, an iPad, Be careful.

1 and 2 illustrate an internal structure of a cellular phone for providing a function of confirming a state of a user himself / herself by using a cellular phone during a video call according to a preferred embodiment of the present invention.

FIG. 2 shows a detailed internal structure for controlling a camera module when implementing a video call application (hereinafter referred to as an "app") among the internal structures shown in FIG.

When the video call application S100 is selected in the application 100, the application framework 110 automatically adjusts the size of the image received from the camera to fit the display of the mobile phone. In addition, the application framework 110 calls an internal Resource Manager (S110), and the Resource Manager (S110) calls a library for camera control in the library terminal (120). Then, the camera driver (S130) of the Linux kernel 130 is driven through the library used for the called camera control.

In a preferred embodiment of the present invention, the Preview size is automatically adjusted to fit the full screen of the mobile phone display (see Figures 4 (b) and (f)). Preview means an image displayed on the display screen of the caller or the called party's mobile phone before the video call is performed when the video call app is activated. To this end, in the application framework 110 of the mobile phone, the screen size used for the full screen in the mobile phone display is standardized and stored in advance for each mobile phone.

Thus, according to the present invention, even when switching from the Preview screen to the video call screen, it is not required to perform an operation such as resizing, so that a smooth video call connection can be performed, and a screen change is slowed while performing a resize operation Solve difficult problems.

 Referring to FIG. 2, an embodiment for controlling the camera module during a video call will be described as follows.

When the user starts the video call application in his / her mobile phone (200), the Preview (S210) of the application framework terminal (210) creates the preview which is the image shot in the front camera module of the mobile phone. In this case, the Preview size is automatically adjusted in accordance with the display full screen of each mobile phone in the SurfaceView (S210), and the display full screen size of each mobile phone of the standardized mobile phone is stored in the application framework (210) for automatic adjustment.

 The SurfaceView (S210) receives the image transmitted from the Camera Service (ICS) (S220) in the Libraries stage (220) through the SurfaceFlinger (S221) (S230).

The Camera Service (ICS) (S220) serves as a binding for interworking with a part provided by the API to use the data information generated from the front camera. In other words, when the camera information is requested from the external API, it is responsible for the role of connection channel for information request and management.

The SurfaceFlinger (S221) is responsible for buffering camera data to be transmitted to the SurfaceView (S210), controlling the sync to be transferred when necessary in the API, and binding channel with the SurfaceView (S210).

Thereafter, when a video call is performed between the caller and the recipient, the Camera Service (ICS) (S220) in the Libraries unit 220 transmits the screen provided to the sender and the receiver to the recipient and the caller, respectively (S240).

After the called party receives the video call and the video call is connected, the caller receives the image displayed on the mobile phone display in the Camera Service (ICS) of the called party's mobile phone Libraries, And receives the image displayed on the display of the mobile phone and performs a video call.

Referring to FIGS. 3 and 4 (a) to 4 (h), in the present invention, both a caller and a called party will explain a method of confirming their own appearance using a cellular phone during a video call.

FIG. 3 is a flowchart illustrating a method of confirming the appearance of a caller and a called party before a video call is performed according to a preferred embodiment of the present invention. 4 (a) to 4 (h) illustrate an embodiment of performing a video call, which is a preferred embodiment of the present invention.

The sender drives the video call application (S311). When the video call app is activated, a front camera mounted on the mobile phone is driven, and an image photographed by the front camera is displayed on the full screen of the mobile phone (see FIG. 4B) in real time (S311 and S312). The caller can check his or her own environment and the surrounding environment through the full screen of the mobile phone display as shown in FIG. 4 (b) using the front camera.

At this time, the caller can check whether his or her own image displayed on the mobile phone display is suitable for a video call or not, and can give a special effect such as a photoshop effect to his or her own image displayed on the mobile phone display. In addition, when the user does not want to convey his or her own image displayed on the cellular phone display to the called party, the user can select a substitute image.

The caller confirms his / her appearance and then selects the called number in the address book (Fig. 4 (c)) to send a video call (Fig. 4 (d)). In this case, it is necessary to note that the caller can perform a variety of modifications, such as searching the address book, selecting a caller using a shortcut, or directly inputting a telephone number (S313).

After that, the video call is switched to the idle screen, and the idle screen displays the image of the caller photographed by the front camera until the video call is made with the called party (S314, FIG. 4E). Even at this time, the caller can give a special effect such as a photoshop effect to his / her appearance displayed on the cellular phone display. In addition, when the user does not want to convey his or her own image displayed on the cellular phone display to the called party, the user can select a substitute image.

Upon receiving the video call call, the called party processes the video call incoming call, and in this case, performs request / response processing according to the standard SIP. In operation S320, the caller ID and call connection information (e.g., video and audio codec, network information, and the like) indicating the name of the corresponding phone number stored in the caller's phone number or the called party's mobile phone are analyzed to analyze the video call incoming call.

When the called party receives the video call call, the front camera mounted on the called party's mobile phone is driven, and the video call receiving screen is displayed to display the calling party's phone number or the like (FIG. 3 S321, FIG. 4 (f)).

When receiving a video call incoming call, the image captured by the front camera is displayed in real time in the receiver's mobile phone display, and the size of the shot image displayed at this time can be set to the size of the full screen mode of the mobile phone display , Fig. 4 (f)).

Then, when the called party receives the video call, the caller is connected to the call. Until the call is connected, the caller's mobile phone display shows the caller's picture taken in real time from the front camera, and the called party's mobile phone display shows the caller's picture taken in real time.

After the video call is connected, the called party and the caller can perform the video call as shown in FIGS. 4 (g) and 4 (h) (S323 and S324). In this case, it is possible to display the caller's image displayed before the connection of the video call on the caller's mobile phone display as it is without resizing and display the image of the called party on the display.

It is possible to display the caller's image displayed prior to the connection of the video call without displaying a resize, and to display the image of the called party on the mobile phone display.

FIG. 5 illustrates an embodiment of performing a video call in a called mobile phone, according to a preferred embodiment of the present invention.

The called party processes a call waiting process for receiving a video call call. In the case of a smart phone, a background process type service is used, which can be modified in various ways (S510).

When the called party receives the video call incoming call (S520), the incoming call is analyzed (S530) and the camera apparatus is controlled (S540).

Analysis of the incoming call (S530) follows the standardized SIP, followed by calling ID and call connection information (e.g., video and audio codec, network information, etc.) indicating the name of the corresponding phone number stored in the calling party phone or the called mobile phone, (S531).

In step S540, the front camera mounted on the mobile phone is driven in step S240, and the image is displayed on the display of the mobile phone through the camera service (ICS) in the Libraries stage (FIG. 2, .

Thereafter, the recipient's cellular phone enters a video call reception screen mode, and displays the caller's telephone number or sender's name and the called party image captured in real time from the front camera (S550).

The called party determines whether to make a video call after confirming the video call reception screen mode (S560). If the call is rejected, the camera drive is terminated (S561). When the call is connected, the image of the called party displayed on the display of the mobile phone through the Camera Service (ICS) in the Libraries stage (FIG. 2, 220) is transmitted to the caller in step S541 and a video call is performed (S571, S580).

The present invention has been described above with reference to preferred embodiments thereof. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

Claims (13)

Displaying on the caller's mobile phone a picture of the caller being photographed in real time;
The caller may select the called number by calling the address book built in the cellular phone on the caller's mobile phone display on which the caller's picture is displayed or the calling party may directly input the called party's phone number, Selecting and transmitting a video call; And
And displaying a state of the caller being photographed in the real time and a state of the caller being photographed in real time on the mobile phone display of the called party on the caller's mobile phone display until the called party receives the transmitted video call, Video call method. The method of claim 1, wherein the called mobile phone
And a front camera mounted on the called party's mobile phone is driven upon receiving a video call incoming call. The method according to claim 1,
The called party is connected to the video call when the called party receives the originated video call, the calling party receives the video displayed on the called party's mobile phone display, the called party receives the video displayed on the calling party's mobile phone display, Characterized by a video call method. The method according to claim 1, further comprising: when receiving an incoming call from the called mobile phone
And a front camera of the called party's mobile phone is driven. The method according to claim 1,
Wherein a front camera of the caller's mobile phone is driven when the caller runs a video call application and the appearance of the caller being photographed in real time is automatically adjusted to the entire screen size of the caller's mobile phone display, Way. 6. The method of claim 5,
Wherein the screen size used in the full screen in the mobile phone display is standardized and stored in advance in the application framework of the mobile phone. delete The method of claim 3,
A video call is connected when the called party receives the originated video call and the caller receives an image displayed on a mobile phone display in a Camera Service (ICS) within the called party's mobile phones Libraries unit, Wherein the video communication is performed by receiving the image displayed on the display of the mobile phone in the Camera Service (ICS). The method of claim 1, wherein the caller and the called party
Wherein a special effect is given to an image displayed on each mobile phone display or an image displayed on each mobile phone display can be changed to a substitute image by using an image processing function supported by each mobile phone. The front camera installed at the time of originating a video call is driven to display the user's real time in front of the display of the terminal in real time until the called party receives the telephone,
Wherein the front camera is automatically operated upon receipt of an incoming call that a video call has been received and displays the user's appearance on the front face of the display in real time until the user arrives. 11. The method of claim 10, wherein the user
Wherein the terminal is capable of providing a special effect or a substitute image to its own image displayed on the display by using an image processing function supported by the terminal. 11. The method of claim 10,
Wherein the image of the user photographed in real time from the front camera is automatically adjusted to a full screen size of the display of the terminal. 13. The method of claim 12,
Wherein a screen size used as a full screen in a display of the terminal is standardized and stored in advance in an application framework of the terminal.

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