KR100367886B1 - video messaging service system for mobile communication terminal and method for sending/receiving the same - Google Patents

Abstract

The present invention relates to a system and method for transmitting a message including a video to a mobile communication terminal, the system configuration is:

A control module plugged into a web browser of a sender's computer and processing and transmitting a video message received from a camera and a microphone; A moving picture message server which receives the moving picture message, stores it for each recipient, and notifies the arrival of the message through the mobile communication network; And a mobile communication terminal for presenting the reached list upon receiving the message arrival and receiving and playing the video message from the video message server according to the receiver's selection.

Description

Video messaging service system for mobile communication terminal and video message transmission method and method for receiving same {video messaging service system for mobile communication terminal and method for sending / receiving the same}

The present invention relates to a mobile communication service system, and more particularly, to a system and method for transmitting a message including a moving picture to a mobile communication terminal.

In the conventional mobile communication system, a message is transmitted through a mobile communication terminal or a web site by inputting a short message to a messaging server providing a mobile communication service, storing the message in a messaging storage space of a receiver, and then sending the message through a mobile communication network. It is known to notify a recipient that he has arrived, and then the receiver establishes a data path to the messaging server and then receives and confirms a voice message.

However, such a conventional messaging service is limited to text information of 40 characters or less, and even in the case of a voice message, it is insufficient to transmit various emotional information by outputting only voice information.

Recently, in the process of promoting the introduction of the IMT-2000 system, a discussion has been made to exchange video signals using a high-speed mobile communication network. However, most of these discussions focus on video telephony. It takes a lot of time to fully generalize, and there is no known technique for transmitting some satisfactory moving picture information to users.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a system capable of supporting a messaging service including a video message and a method for transmitting and receiving the message.

Furthermore, an object of the present invention is to provide a system and a method capable of supporting such a service with minimal upgrade of existing universal mobile communication systems and mobile communication terminals.

1 illustrates a configuration of a video messaging service system according to an exemplary embodiment of the present invention.

2 illustrates an embodiment of a video processing module.

3 is a flowchart illustrating a video message transmission and reception method according to an exemplary embodiment of the present invention.

According to an aspect of the present invention for achieving the above object, a personal computer used by the sender of the video messaging service system of the present invention is equipped with a web browser and the web browser has a plug-in control module for communicating with a video message server. It is characterized by including.

According to this aspect of the present invention, the present invention can generate the video information and transmit it to the mobile communication terminal without any additional modification or user's expertise or effort on the user's computer, the mobile communication terminal is only video playback software Upgrading has the advantage of receiving video message service.

According to a further aspect of the present invention, the plug-in control module compresses a voice signal received from a microphone through a conventional voice processing card into a voice compression algorithm supported by a receiver's mobile communication terminal for voice calls. Contains modules

According to this aspect of the present invention, the present invention can enable a video messaging service with minimal program upgrade in the receiver's mobile communication terminal.

According to another aspect of the present invention, the present invention is characterized in that it comprises a video message server for storing video message information for each recipient.

According to such an advantageous aspect of the present invention, it is possible to efficiently manage relatively large amount of video message information, and can support video messaging service in a manner similar to a conventional text or voice messaging service, thereby minimizing the system at the sender or receiver side. It is possible to provide video messaging service only by changing.

According to an aspect of the present invention, there is provided a video messaging service system. The video messaging service system of the present invention performs video processing on a video signal input from a camera to generate message information, and the receiver's mobile communication terminal receives a voice call for a voice signal input from a microphone. At least one sender computer, each of which executes a web browser, comprising: a plug-in control module for compressing with a speech compression algorithm supported during demodulation, adding the message information to the message information, and transmitting the message information and the receiver call information; Is connected with the sender computer via a digital network; Store the message information received from the sender computer in a memory area of a receiver selected from receiver call information; Send a message arrival notification signal containing the receiver call information and indicating that the message information has been received; A video message server for transmitting the message information through a mobile communication network in response to a request of a mobile communication terminal of a receiver; a messaging server for transmitting a message arrival notification signal received from the video message server through a mobile communication network; Receiving the message arrival notification signal from the system to notify the recipient of the message arrival; Requesting the message information to the moving picture message server in response to the selection of the receiver and sequentially receiving the message information; And a mobile communication terminal for demodulating and outputting the video signal of the received message information from the video output module to the display device frame memory in sequence.

In addition, the video message transmission method of the present invention according to the above-described aspect is:

Receiving message information including moving picture data and voice data compressed to be decodable by the mobile communication terminal from a plug-in control module in a web browser of a sender's personal computer;

Identifying a recipient from the message information;

Storing the message information in a storage space allocated to the identified recipient;

A message arrival notification step of notifying the messaging server of the mobile communication system that the message information has been reached, including identification information of the receiver;

And transmitting the message information in response to a request of a receiver's mobile communication terminal.

In addition, the video message receiving method of the present invention according to the above-described aspect:

Receiving message arrival notification information indicating arrival of message information from a messaging server;

Presenting the arrival notification information to a user;

Connecting to the video message server in response to a user's request;

Requesting a message from the video message server;

Receiving message information including moving picture information and compressed voice information from the moving picture message server;

Decoding the received video information and copying frame-by-frame to the display memory of the mobile communication terminal, and demodulating the received compressed voice information by using the voice demodulation module of the mobile communication terminal and outputting the same to a speaker; It is characterized by.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce.

1 is a block diagram of a video messaging service system according to an exemplary embodiment of the present invention.

The messaging service system according to the above embodiment includes a sender's computer 100, a messaging system 200, a mobile communication terminal 300, various known mobile communication devices 510, 520, 530, and web servers 400. , 500).

The messaging center web server 400 illustrates web servers that operate web sites that provide video messaging services over the Internet. The message sender is connected to the messaging center web server 400 through the web browser 110 and may undergo a procedure such as membership registration and authentication. At this time, by implicit or explicit method, the user can select the URL where the plug-in necessary for the video messaging service, such as Microsoft's Active-X and Java, is located. This plug-in will download and install this plug-in. Indeed, such a plug-in may exist at any location on the Internet but is shown in the figure as a plug-in web server 500 included in the messaging system 200.

On the other hand, the sender's computer 100 includes a microphone 131 for sound input and a sound card or voice processing card 132, a camera 141 for inputting a video and a camera interface, for example, a USB port 142. Include. Here, the camera 141 is shown in the form of outputting after analog-to-digital conversion of the analog video information input from the CCD. However, such an illustration is an example, and any form may be used as long as it is a computer input device for moving image input. As of the filing date, various camera equipments are used in connection with computers, and each equipment manufacturer has written and provided device drivers that work well in various operating systems in order to use their equipments in connection with computers. . Therefore, the video data can be easily obtained by using them in any operating system, and most of the video data obtained is video data having color values.

According to an exemplary embodiment of the present invention, the video processing module 122 of the present invention decodes the color image data to reduce the resolution, and converts the color image data into a gray image having two or four gray values and then adds the gray image data. And arbitrary signal compression processing is performed. This is because most mobile phones are equipped with gray LCD monitors, and the IS95-A, which has a first data rate of mobile communication environment, supports 14Kbps of bandwidth and 64Kbps of IS95-B, but in reality it is much lower than this. Optional embodiment. Therefore, the present invention is not limited to this embodiment, and if a faster standard such as IMT2000 is realized in the future, such a signal processing and compression process is a field applicable to those skilled in the art.

Hereinafter, the processing of the video processing module 122 of the plug-in control module 120 will be described in detail. 2 shows an embodiment of the video processing module 122. In general, since the mobile phone display 321 is a gray conversion process (122-1). In general, the input format of the camera has YUV or RGB value. In the case of YUV format, the Y value and the RGB value of G value are regarded as gray values. Can be. However, if you can afford it, more complex calculations such as (G + B) / 2 can be used to support more accurate luminance values. Afterwards, since the resolution of the mobile phone display 321 is lower than that of the camera 141, it may be necessary to undergo a decimation process. However, the order of such processing is not necessarily limited to this order, and according to the specifications and performance of the display 321 and the display circuit 322 of the mobile phone, the algorithm or processing order of the processing itself may be optimally selected for efficiency. . The image quality improvement processor 122-3 converts the input gray image value to be optimally recognized by the human eye in the liquid crystal display by reflecting a difference between the characteristics of the liquid crystal display generally employed in a mobile phone and the characteristics of a camera input signal. For example, image processing such as pixel value mapping processing is executed. Such image processing may include an image brightness adjustment process of multiplying a pixel value by a specific scaling factor, and may include shape data enhancement filtering such as image sharpening.

Afterwards, the dither processor 122-4 processes the gray image to be viewed as a gray image of a multi-gradation. In general, the visual characteristics of a human may be mathematically expressed to output a multi-gradation image on a display or a printer that can express only a small gray scale value. Will be reflected and processed. Algorithms known to be well suited for use in liquid crystal displays include the Barkes, Sierra, Jarvis, Judice and Ninke, Stucki algorithms, etc. In this embodiment, the calculation amount is small and the image quality is not different. The invention employs the Floyd and Steinberg algorithm. A preferred embodiment of the present invention employs a modified Floyd and Steinberg algorithm that can be selected for a cell phone employing a liquid crystal monitor capable of supporting four grays. At this time, the boundary value for this algorithm was selected to be 64, 100, 160 to adjust the image brighter than the equal values 64, 128, 192.

Since the compressed processor 122-5 already has only 2 bits per pixel, the amount of data is sufficiently reduced, so that image compression such as PCM is not very meaningful. In the case of the liquid crystal monitor in the mono mode, the data can be further reduced by only one bit value per pixel. In addition, even if a method such as Run Length Coding is applied, the amount of image data can be reduced, but since a large portion of pixel values can be overlapped when expressed in byte format due to the characteristics of the dithered data, In the embodiment, compression is performed using a ZIP algorithm used in document compression without accessing a conventional image compression technique. However, this algorithm can be selected in consideration of the performance of the cellular phone and the characteristics and quantity of the dithered image data, for example, the compression process may not be performed at all.

Next, the voice processing module 121 encodes the voice data received from the device driver of the voice processing card or the sound card 132 into a compression algorithm that the mobile communication terminal can decode with a voice codec adopted for a normal voice call. . Compression algorithms adopted in mobile phones include Q-CELP and EVRC. The processed video signal and audio signal are converted into video message information, which is a data packet of an appropriate size, together with the control information necessary for their reproduction, for example, the mobile phone number of the receiver, the data for control for lip sync, and the like. It is sent to the video message server through the control module.

Next, the messaging system 200 will be described in detail. According to a preferred embodiment of the present invention, the messaging system 200 includes a messaging server 220 commonly referred to as an SMS center, a gateway 211 commonly referred to as an interworking function (IWF), and mobile communication devices 510, 520, and 530. Is a known system component that is already known or very similar to the existing messaging system. The video message server 210 characteristic of the present invention stores a relatively large amount of video message information in a memory area partitioned by recipient. In addition, the video message server 210 requests a typical messaging server 220 to notify the receiver of the mobile terminal 300 of the arrival of such a video message, while the user who has received such a request sets up a call path. If it is, the video message information is transmitted through user identification. The messaging server 220 may use an existing SMS. According to the SMS method, the user recognizes whether a message arrives through a ring tone or the like and sets a call of the data mode to the video message server 210 by pressing an appropriate selection button. At this time, the user selects an arbitrary message from the given list and receives information corresponding to the selected information from the video message server 210. The video message information can be transmitted in a message unit or a video frame unit. The method of sending a message unit downloads the entire selected message at a time while the communication channel is open, and the mobile communication terminal downloads the downloaded video. After storing the message in memory, the memory is accessed to play the video message. Therefore, this method requires sufficient memory space for the mobile communication terminal. Next, the method of sending video frame unit is applicable when the memory capacity of the mobile communication terminal is insufficient and the call condition is relatively good. Within the wireless communication bandwidth limit, the server transmits the selected message frame by frame and the receiving side transmits the selected message. Receive and play in real time. However, the transmission unit may be appropriately selected depending on the playback environment such as wireless communication bandwidth and free memory space of the terminal.

Next, a mobile communication terminal 300 according to an embodiment of the present invention will be described. In the mobile communication terminal 300 according to the embodiment, the call circuit 310 including the voice demodulation module 311, the display 321, the display circuit 322, and the messaging service circuit 340 are known or not. Very similar configurations. That is, when the message is received through the call circuit 310, the messaging service circuit 340 receives it, demodulates the voice information to the voice demodulation module 311 and outputs it to the speaker, and the video information demodulates the signal from the video demodulation module. The video information is reproduced by writing the data frame by frame to the display memory of the display 321 through the display circuit 322. However, in the download mode, the video demodulation module 330 first downloads the video message information to the internal memory and copies the message information to the display memory frame by frame. According to such a configuration, the mobile communication terminal 300 according to the preferred embodiment of the present invention adds only the video demodulation module 330 to the messaging service module 330 by software upgrade in the existing CDMA mobile phone. It can be easily implemented by setting the branch path to the video message classification and video demodulation module.

Hereinafter, a video message transmission method and a reception method thereof according to an embodiment of the present invention will be described in detail.

3 is a flowchart illustrating a video message transmission and reception method according to an embodiment of the present invention.

A user who wants to transmit a video message according to the present invention connects to a messaging center web server 400 that provides a video messaging service through the web browser 110 of the sender computer 100 (S310). The messaging center web server 400 may be located anywhere on the Internet and may be provided by a plurality of service providers. A user who wishes to use the video messaging service for the first time is connected to a plug-in web server 500 located at an arbitrary address on the Internet in an explicit / implicit manner by an instruction encoded in a web page of the messaging center web server 400, and therefrom. The plug-in control module 120 capable of supporting a video messaging service, for example, downloads Microsoft's Active-X control (Active-X control) (S320). Thereafter, the sender records a video message through the camera 141 and the microphone 131 mounted to the computer (S330). The recorded video message is transmitted to the video message server 210. The video message server 210 may be physically the same server as the messaging center web server 400, or a plurality of video message servers 210 may exist. The video message server 210 allocates memory space for each recipient and stores the message for a predetermined period of time, for example, for one month (S340). Afterwards, the video message server 210 requests a notification of the arrival of the message to the messaging server 220 that provides a typical messaging service. The messaging server 220 notifies the recipient of the message through the mobile communication networks 510, 520, and 530 according to the messaging protocol, for example, SMS, ISMS, WAP, etc. (S350). ) Is not enough memory to receive only brief information (S360) and actually receive the message is connected to the messaging server in the data communication mode via the mobile communication network (S370) it is preferable to play back frame by frame while receiving a video message (S370) (S390). However, as mentioned above, if the memory capacity of the mobile communication terminal 300 is sufficient and the bandwidth of the mobile communication network allows, it is more advantageous to play the stream while receiving in real time. Thus, the invention encompasses both aspects and the claims should be construed in this sense.

As described in detail above, the present invention can be easily implemented by software upgrade to a mobile communication terminal using an existing text or voice messaging service, and can be effectively used for various contents using video messaging, for example, advertisements. This is a useful technique.

While the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many various obvious modifications are possible without departing from the scope of the invention from this description. Accordingly, the invention can only be construed limited by the words of the appended claims.

Claims (6)

delete Message information is generated by performing video processing on the video signal input from the camera, and the voice signal input from the microphone is compressed using a voice compression algorithm supported by the receiver's mobile communication terminal during demodulation of the voice. At least one sender computer each of which executes a web browser; and a plug-in control module for transmitting the message information and the receiver call information. Is connected with the sender computer via a digital network; Store the message information received from the sender computer in a memory area of a receiver selected from receiver call information; Send a message arrival notification signal containing the receiver call information and indicating that the message information has been received; A video message server for transmitting the message information through a mobile communication network in response to a request of a mobile communication terminal of a receiver; A messaging server for transmitting a message arrival notification signal received from the video message server through a mobile communication network; Receive the message arrival notification signal from the messaging server to notify a recipient of the message arrival; Requesting the message information to the moving picture message server in response to the selection of the receiver and sequentially receiving the message information; A mobile communication terminal which demodulates a video signal of the received message information from an internal video output module and sequentially outputs the video signal to a display device frame memory; Video message service system comprising a. Receiving message information including a moving picture from a plug-in control module in a web browser of a sender's personal computer; Identifying a recipient from the message information; Storing the message information in a storage space allocated to the identified recipient; A message arrival notification step of notifying the messaging server of the mobile communication system that the message information has been reached, including identification information of the receiver; And transmitting the message information in response to a request of a receiver's mobile communication terminal. The method of claim 3, wherein receiving message information from a plug-in control module in a web browser of the sender's personal computer includes: Receiving message information including speech data compressed to be decodable by the mobile communication terminal; Video message transmission method comprising a. An arrival notification receiving step of receiving message arrival notification information indicating the arrival of the message information from the messaging server; A list presentation step of presenting the arrival notification information to a user; A server access step of accessing the video message server in response to a user request; A message requesting step of requesting a message from the video message server; A message receiving step of receiving message information including moving picture information from the moving picture message server; And a display step of decoding the received video information by copying and displaying the received video information frame by frame into the display memory of the mobile communication terminal. The method according to claim 5, wherein the message information received in the message receiving step further comprises compressed voice information; And demodulating the received compressed voice information by using the voice demodulation module of a mobile communication terminal and outputting the compressed voice information to a speaker.