KR20070058140A - Method and mobile communication terminal for providing video call function by using special effect - Google Patents

Abstract

A method for supplying a video call function using special effect and a mobile communication terminal are provided to perform mosaic, still image, and special effect processing functions according to a user' selection during a video call in order to transmit a moving picture to the other party's mobile communication terminal. If a mobile communication terminal demands access to the other party's terminal, a video call path is activated to initiate a video call function(S210). A camera takes a moving picture, and the taken moving picture is received(S220). A microprocessor decides whether a video conversion mode is inputted through a key input unit(S230). If so, a video converter converts the received moving picture according to the video conversion mode(S240). A DSP(Digital Signal Processor) performs an MPEG(Motion Picture Experts Group) encoding process to send the converted video to the other party's terminal(S250). The video is transmitted to the other party's terminal.

Description

Method and Mobile Communication Terminal for Providing Video Call Function by Using Special Effect}

1 is a view showing the configuration of a mobile communication terminal providing a video call function using a special effect according to an embodiment of the present invention;

2 is a flowchart illustrating a method of providing a video call function using special effects according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: mobile communication terminal 102: mode state storage unit

104: key input unit 106: LCD display unit

108: image conversion unit 110: additional device processing unit

112: camera 114: subscriber information storage unit

116: microprocessor 118: digital signal processing unit

120: baseband converter 122: speaker

124: RF signal processing unit

The present invention relates to a method for providing a video call function using a special effect and a mobile communication terminal. More specifically, during a video call, a video call function using a special effect of transmitting a video to a counterpart mobile communication terminal by performing a mosaic, still image, and special effect processing according to a user's selection through a key input unit of a mobile communication terminal is provided. It relates to a method and a mobile communication terminal.

As computers, electronics, and communication technologies have made great strides, various wireless communication services using wireless networks have been provided, and the functions of mobile communication terminals have been gradually expanded. The most basic wireless communication service is a wireless voice call service that provides a voice call to a mobile terminal user wirelessly, which can provide a call service regardless of time and place. In addition, while supplementing the shortcomings of the voice call service by providing a text message service, a wireless Internet service that provides an Internet communication service to a user of a mobile communication terminal through a wireless communication network has emerged. In recent years, portable information terminals such as laptop-type personal computers, PDAs, and cellular phones have been widely used as models equipped with photographing means such as digital still cameras and digital video cameras.

Accordingly, subscribers of mobile communication service can freely move and talk with the other party anytime and anywhere using wireless communication service, and various information necessary for life through wireless internet service such as news, weather, sports, gift , Exchange rates, and traffic information may be provided in various forms such as text, voice, and still images.

In addition, various applications such as games, word processors, and the like can be used on a mobile communication terminal. Also, a mobile communication terminal equipped with a photographing means can capture still images or moving images of a subject, and transfer and exchange image information or make a video call. .

Accordingly, customers of mobile communication services are demanding mobile terminals capable of providing various additional services in addition to basic voice call services, and mobile communication service providers and manufacturers of mobile communication terminals are required to add new additional services to meet the needs of these customers. While developing services, a mobile terminal capable of supporting these services is being developed.

In addition to carrying out voice calls while carrying a mobile communication terminal, the mobile subscriber can access the Internet through a mobile communication system using a wireless Internet technology to provide multimedia data services such as text, image, voice or video. To be provided. The wireless Internet allows a mobile subscriber to search and download a variety of information by accessing the Internet using a mobile communication terminal without time or space constraints.

Recently, with the development of the Internet and multimedia data technology, a content provider (CP) that provides various contents such as multimedia communication, network game, and video game has emerged, and various services provided by the content provider are provided as mobile communication terminals. The number of mobile subscribers to use has increased.

On the other hand, thanks to the development of mobile communication services, mobile communication terminals are evolving into terminals with multimedia functions, not simply terminals that support only voice calls and short message services. The camera is installed in the mobile communication terminal to take a picture, and the module having the function of playing a sound source can be mounted in the mobile communication terminal to play music, and recently, the module that can receive satellite broadcasting is installed. Therefore, the development of satellite broadcasting is being developed not only in terms of hardware but also in software.

As such, the field of using a mobile communication terminal has been widened. However, since a mobile communication terminal is based on the basic function of a voice call, a video call service has recently been provided in order to expand the scope of support for voice calls between mobile communication terminals.

However, in such a video call service, a user must continuously transmit a video recorded in real time. In a situation where it is difficult for a user to transmit a video recorded in real time, the user cannot transmit or record a video without any processing. There was a problem causing inconvenience.

In order to solve the above-mentioned problems, the present invention provides a special effect of transmitting a video to a counterpart mobile communication terminal by performing a mosaic, still image, and special effect processing according to a user's selection through a key input unit of a mobile communication terminal during a video call. An object of the present invention is to provide a method for providing a video call function and a mobile communication terminal.

According to a first object of the present invention, a mobile communication terminal providing a video call function using a special effect of performing a mosaic, still image and special effect processing according to a user's selection during a video call to transmit a video to the other mobile terminal. A camera comprising a small lens and mounted or connected to the inside of the mobile communication terminal to start shooting a video when the video call function operates; An additional device processing unit for processing a function additionally connected or mounted to the mobile communication terminal and converting a video photographed by the camera into an electrical signal that can be processed by the mobile communication terminal; And a plurality of key buttons including a key button for selecting the video call function and a key button for selecting an image conversion mode including the mosaic, the still image, and the special effect of the video photographed by the camera. A key input unit; An image converting unit converting a moving image photographed by the camera according to the image converting mode including the mosaic, the still image, and the special effect selected through the key input unit; A digital signal processing processor for coding or decoding a voice packet and a data packet and processing sound data, comprising: a digital signal processing unit for encoding a moving image photographed by the camera or a moving image converted by the image conversion unit; And when the video call function is performed in the mobile communication terminal, perform video recording through the camera, convert the video photographed by the camera according to the image conversion mode, by the image conversion unit, and photograph by the camera. Provides a video call function using a special effect, characterized in that it comprises a microprocessor for controlling the function to encode a video or video converted by the image conversion unit in the digital signal processing unit and transmitted to the mobile communication terminal It provides a mobile communication terminal.

According to a second object of the present invention, a video call function using a special effect of transmitting a video to a mobile communication terminal by performing a mosaic, still image and special effects processing according to a user's selection of a mobile communication terminal during a video call A method comprising the steps of: (a) the mobile communication terminal recognizing that a video call path with the counterpart mobile communication terminal is activated via a mobile communication network to perform the video call function; (b) photographing a video through a camera and receiving the video through the attachment processing unit; (c) determining whether an image conversion mode including the mosaic, a still image, and a special effect is selected through a key input unit; (d) when it is determined in step (c) that the image conversion mode is selected through the key input unit, converts the video received from the camera according to the image conversion mode including the mosaic, still image, and special effects; Doing; (e) performing MPEG (Moving Picture Experts Group) encoding to transmit the video converted according to the video conversion mode to the counterpart mobile communication terminal; And (f) transmitting the MPEG-encoded video to the counterpart mobile communication terminal through the video call path.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram schematically illustrating an internal configuration of a mobile communication terminal that provides a video call function using a special effect according to an embodiment of the present invention.

The mobile communication terminal 100 according to the present invention includes a mode state storage unit 102, a key input unit 104, a liquid crystal display (LCD) display unit 106, a data storage unit 108, an image conversion unit 110, Attachment processing unit 111, camera 112, Subscriber Identity Module (SIM) 114, Microprocessor (116), Digital Signal Processor (DSP: Digital Signal Processor) 118, It includes a baseband converter 120, a speaker 122 and the RF signal processor 124.

The mode state storage unit 102 stores the current operation mode of the mobile communication terminal 100 selected by the key input unit 104 as a state flag (eg, 0, 1, 2, ...). That is, the microprocessor 116 for each mode to distinguish the standby mode, the origination mode, the search mode, the call mode, the normal incoming mode, the video conversion mode and the multimedia coloring service incoming mode, etc. of the mobile communication terminal 100. The mode state storage unit 102 is updated by assigning a unique state flag.

The key input unit 104 includes a plurality of keys including a key button for selecting a video call function and a key button for selecting an image processing mode including a mosaic, a still image, and a special effect of an image captured by the camera 112. It includes a button.

The LCD display unit 106 displays an operation state of the mobile communication terminal 100 including a state of use of the battery, a reception strength of radio waves, a date, a time, and the like. In particular, in connection with the present invention, the LCD display unit 106 displays a process of operating the video call function and a process of selecting an image processing mode.

The image conversion unit 108 performs mosaic, still image, and special effects on the image captured by the camera 112 according to the image processing mode selected by the key input unit 104.

The additional device processing unit 110 is for processing a function additionally connected or mounted to the mobile communication terminal 100. For example, the data input / output processing function for the additional device having a digital camera function, a camcorder function, an audio function, and the like is performed. Do this. In addition, the accessory processing unit 110 according to the preferred embodiment of the present invention converts the still image and the video captured by the camera 112 into an electrical signal that can be processed in the mobile communication terminal 100 and transmits.

The camera 112 may be mounted or connected inside the mobile communication terminal 100 in a configuration including a small lens. When the video call function is operated according to a key input from a user, the camera 112 starts shooting a video.

The subscriber information storage unit 114 stores a mobile identification number (MIN), an electronic serial number (ESN), a personal security key, and various data necessary for the operation of the mobile communication terminal 100. The subscriber information storage unit 114 is also called a subscriber identification module (SIM) card because it is inserted into a slot in the mobile communication terminal 100 in the form of a card, and is connected between the mobile communication terminal 100 and the VoIP network. Perform the interface function. That is, when the power of the mobile communication terminal 100 is turned on, the mobile communication terminal 100 transmits and receives all information on the SIM card with the mobile communication network, and performs voice calls, data transmission and the like at the same time as the use approval is denied from the mobile communication network. You can do it.

When the video call function is performed in the mobile communication terminal 100, the microprocessor 116 starts capturing a video through the camera 112 and transmits the video to the counterpart mobile communication terminal according to the image conversion mode selected according to the user's key input. The video conversion unit 108 processes the captured video by the camera 112.

In addition, the microprocessor 116 according to an exemplary embodiment of the present invention processes the video captured by the camera 112 or the video processed by the image conversion unit 108 in the mobile communication terminal 100 or in a counterpart mobile communication terminal. In order to transmit, the digital signal processing unit 118 performs moving picture expert group (MPEG) encoding.

The digital signal processor 118 codes or decodes a voice packet and a data packet, functions as an equalizer to remove multipath noise, and performs a digital signal processing function of acoustic data. As a processing processor, the digital signal processing unit 118 according to an exemplary embodiment of the present invention receives a moving picture captured by the camera 112 or a moving picture processed by the image conversion unit 108 through the microprocessor 116 to move the other party. MPEG encoding is performed for transmission to the communication terminal.

The baseband converter 120 converts a signal transmitted / received between the RF signal processor 124 and the digital signal processor 118, the speaker 122, and the microphone 124 into a signal of a baseband band, and converts a digital-analog signal. (DAC: Digital to Analog Conversion) and Analog to Digital Conversion (ADC). In addition, the baseband converter 120 transmits the transmission data (TXIQ) to the RF signal processor 126, and controls the power (POWER) of the RF signal processor 124 or automatically controls its gain (AGC). . The RF signal processor 124 receives the received signal RXIQ.

The speaker 122 outputs sound data transmitted from the baseband converter 120 as an audible sound, and a microphone (not shown) converts a user's voice input into an electrical signal.

The RF signal processor 126 demodulates and amplifies an RF signal received from the RF antenna, modulates a transmission signal applied from the baseband converter 120, and transmits the modulated signal to a radio wave space.

On the other hand, the mobile communication terminal 100 according to an embodiment of the present invention is a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, GSM (Global System for Mobile) phone, W-CDMA (Wideband CDMA) Phones, CDMA-2000 phones, Mobile Broadband System (MBS) phones, and the like. Here, MBS phone refers to a mobile phone to be used in the fourth generation system currently being discussed.

2 is a flowchart illustrating a method of providing a video call function using special effects according to a preferred embodiment of the present invention.

When the mobile communication terminal 100 requests access to the other party's mobile communication terminal through the mobile communication network, the video call path is activated to start the video call function (S210). The mobile communication terminal 100 performs a video call function by selecting a video call function with the counterpart mobile communication terminal through the key input unit 104 or by answering a video call request call received from the counterpart mobile communication terminal.

When the video call function is started, the camera 112 captures a video and receives the video through the additional device processor 110 (S220).

The microprocessor 116 receiving the video received from the camera 112 determines whether the image conversion mode is received through the key input unit 104 (S230).

In the case where it is determined in step S230 that the image conversion mode is input through the key input unit 104, image conversion of the video received from the camera 112 according to the image conversion mode including the mosaic, still image, and special effects selected in step S230 In step 108, the conversion is performed (S240).

The digital signal processor 118 performs MPEG encoding in order to transmit the image converted by the image converter 108 to the counterpart mobile communication terminal according to the image conversion mode including mosaic, still image, and special effects (S250). .

The image conversion and MPEG encoding image is transmitted to the other party's mobile communication terminal through the RF signal processor 124 and the RF antenna (S260).

On the other hand, when it is determined in step S230 that the image conversion mode has not been input through the key input unit 104, the process proceeds to step S250 to perform MPEG encoding on the video received from the camera 112 without the image conversion process.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, in a situation in which it is difficult to transmit a video recorded in real time while performing a video call in a mobile communication terminal, a special effect is processed on the video and transmitted to the other mobile terminal. There is an effect that can perform a video call without the inconvenience of the other party.

Claims (7)

A mobile communication terminal providing a video call function using a special effect of transmitting a video to a mobile communication terminal by performing a mosaic, still image and special effects processing according to a user's selection in a video call, A camera including a small lens and mounted or connected inside the mobile communication terminal to start shooting a video when the video call function operates; An additional device processing unit for processing a function additionally connected or mounted to the mobile communication terminal and converting a video photographed by the camera into an electrical signal that can be processed by the mobile communication terminal; And a plurality of key buttons including a key button for selecting the video call function and a key button for selecting an image conversion mode including the mosaic, the still image, and the special effect of the video photographed by the camera. A key input unit; An image converting unit converting a moving image photographed by the camera according to the image converting mode including the mosaic, the still image, and the special effect selected through the key input unit; A digital signal processing processor for coding or decoding a voice packet and a data packet and processing sound data, comprising: a digital signal processing unit for encoding a moving image photographed by the camera or a moving image converted by the image conversion unit; And When the video call function is performed in the mobile communication terminal, video recording is performed through the camera, and the video conversion unit converts the video photographed by the camera according to the image conversion mode, and photographs by the camera. A microprocessor for controlling a function of encoding a moving picture or a moving picture converted by the image converter by the digital signal processor and transmitting the encoded video to the mobile communication terminal Mobile communication terminal providing a video call function using a special effect comprising a. The method of claim 1, wherein the mobile communication terminal, An LCD display unit which displays an operation state of the mobile communication terminal including a state of use of a battery, reception strength of radio waves, a date and time, and displays a process of operating the video call function and selecting a video conversion mode; Demodulating and amplifying the RF signal received from the RF antenna, and using the special effects, characterized in that it further comprises an RF signal processing unit for transmitting the video encoded by the digital signal processing unit to the mobile communication terminal via the RF antenna A mobile communication terminal that provides a video call function. The method of claim 1, wherein the mobile communication terminal, A mode state storage unit for storing an operation mode of the mobile communication terminal including a standby mode, an outgoing mode, a call mode, a video conversion mode, a video call mode, and an incoming mode selected by the key input unit as a status flag; A speaker for outputting the sound data as an audible sound; A subscriber information storage unit for storing a mobile identification number (MIN), an electronic serial number (ESN), a personal security key, and data necessary for the operation of the mobile communication terminal; And A baseband converter for converting a signal transmitted and received between the RF signal processor, the digital signal processor, and the speaker that outputs the acoustic data into an audible sound, into a baseband signal, and performing digital-to-analog conversion and analog-digital conversion A mobile communication terminal providing a video call function using a special effect, characterized in that it further comprises. The method of claim 1, The digital signal processor performs MPEG (Moving Picture Experts Group) encoding to process the video taken by the camera or the video converted by the image converter in the mobile communication terminal or to transmit to the other mobile communication terminal. A mobile communication terminal providing a video call function using a special effect. In the method of providing a video call function using a special effect of transmitting a video to the mobile communication terminal by performing a mosaic, still image and special effects processing according to the user's selection of the mobile communication terminal, (a) the mobile communication terminal recognizing that the video call path with the counterpart mobile communication terminal is activated through a mobile communication network to perform the video call function; (b) photographing a video through a camera and receiving the video through the attachment processing unit; (c) determining whether an image conversion mode including the mosaic, a still image, and a special effect is selected through a key input unit; (d) when it is determined in step (c) that the image conversion mode is selected through the key input unit, converts the video received from the camera according to the image conversion mode including the mosaic, still image, and special effects; Doing; (e) performing MPEG (Moving Picture Experts Group) encoding to transmit the video converted according to the video conversion mode to the counterpart mobile communication terminal; And (f) transmitting the MPEG-encoded video to the counterpart mobile communication terminal through the video call path. Method for providing a video call function using a special effect comprising a. The method of claim 5, If it is determined in the step (c) that the image conversion mode is not selected, the special effects, characterized in that for performing the MPEG encoding without converting the video received from the camera after transmitting to the other mobile terminal A method of providing a video call function using. The method of claim 5, In the step (a), the video call function is started by selecting the video call function with the counterpart mobile communication terminal through the key input unit or in response to the video call request call received from the counterpart mobile communication terminal. A method for providing a video call function using special effects.

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