KR0171373B1 - Multimedia i/o method and apparatus having client server construction - Google Patents

Abstract

The present invention provides a first process of receiving multimedia data at a remote location to enable the user to search audio and video data at a remote location in real time, as well as to conduct a video conference with another remote location. A second step of determining whether the data received in the step is image data; A third step of separating the video and audio signals by restoring the video data when it is determined that the video data is in the above process; A fourth step of outputting graphic data if it is determined that the image data is not image data in the second step; A fifth process of overlaying the video signal separated in the third process and the graphic data output in the fourth process; A sixth step of receiving a camera signal through an image reading means; A seventh step of receiving a microphone signal through a voice reading means; An eighth step of generating data input through the sixth and seventh steps as an analog signal; A ninth step of mixing and outputting data output in the eighth step into a digital signal; The present invention relates to a multimedia input / output method and apparatus having a client-server structure, comprising a tenth step of transmitting data converted in the ninth step to a remote location. Personal Digital Assistnat (PDA) or notebook computer, but the laptop type is not suitable for carrying weight and size, and existing personal digital assistants are easy to carry but can access remote multimedia data or retrieve multimedia information. There is an effect to solve the problem that the function was not provided.

Description

Multimedia input / output method and device therefor with client server structure

1 is a block diagram showing the configuration of the present invention.

2 is a flowchart of processing multimedia data transmitted in the present invention.

3 is a flowchart illustrating output of multimedia data input in the present invention.

* Explanation of symbols for main parts of the drawings

1: central control unit 2: peripheral device control unit

3: system input / output control unit 4: multimedia input / output control unit

5: wireless communication control unit 6: multimedia processing unit

7: Data storage unit 8: Program storage unit

A_SDATA: Analog Serial DATA, Analog Serial Data Bus

ADDR: Address Bus, Address Bus Signal

CLK: Clock, clock signal

DATA: Data bus signal

D_YUV: Digital YUV Signal, Digital YUV Signal

D_RGB: Digital RGB Signal, Digital RGB Signal

LCD: Liquid Crystal Display, Liquid Crystal Display

MDATA: Multimedia Data Bus, Multimedia Data Bus Signal

MIC: Microphone, Microphone

MPU: Central Control Unit, Main Processing Unit

SDATA: Serial Data Bus, Serial Data Bus Signal

SEL_C: Select Communication Controller, Wireless Communication Control Unit Selection Signal

SEL_M: Select Multimedia Processing Unit, Multimedia processing unit selection signal

SEL_R: Select Memory, system memory selection signal

SEL_S: Select System IO Controller, system input / output controller selection signal

SIO_DATA: System IO DATA Bus, System I / O Data Bus Signals

SYNC: Synchronization Signal, Video Synchronization Signal

The present invention provides a multimedia input / output method and apparatus having a client-server structure that enables not only to search audio and video data at a remote location in real time even when the user is moving, but also to have a video conference with another person at a remote location. It is about.

In general, for multimedia data processing such as audio-video-graphics, a multimedia dedicated hardware board is installed in a computer system or processed using software using a high performance processor.

In addition, in applications such as remote multimedia data retrieval, video conferencing, and video messaging, most users transmit and retrieve multimedia data using a communication means such as a telephone line or a local area network where a computer or a terminal is installed.

In particular, portable computers include personal digital assistants (PDAs) and notebook computers. However, laptops are not suitable for carrying weight and size. There is a problem that there is not provided a function for accessing or retrieving multimedia information.

An object of the present invention for solving the above problems is not a Add-On type board to be mounted on a conventional computer system bus, but as a single board equipped with an independent power supply and communication device. It is portable and can easily access remote multimedia data through LCD and Pen input attached to the device, and also has a client server structure for video conferencing through camera. The present invention provides a multimedia input / output method and an apparatus thereof.

According to another aspect of the present invention, there is provided a data processing method of a multimedia input / output device, comprising: a first step of receiving multimedia data at a remote location; A second step of determining whether the data received in the step is image data; A third step of separating the video and audio signals by restoring the video data when it is determined that the video data is in the above process; A fourth step of outputting graphic data if it is determined that the image data is not image data in the second step; And a fifth process of overlaying the video signal separated in the third process and the graphic data output in the fourth process.

According to another aspect of the present invention, there is provided a data output method in a multimedia input / output device, comprising: a first step of receiving a camera signal through an image reading means; A second step of receiving a microphone signal through a voice reading means; A third process of generating data input through the first process and the second process as analog signals, respectively; A fourth step of mixing and converting the data output in the third step into a digital signal; And a fifth process of transmitting the data converted in the fourth process to a remote site.

According to still another aspect of the present invention, there is provided a data input / output method in a multimedia input / output device, comprising: a first step of receiving multimedia data at a remote location; A second step of determining whether the data received in the step is image data; A third step of separating the video and audio signals by restoring the video data when it is determined that the video data is in the above process; A fourth step of outputting graphic data if it is determined that the image data is not image data in the second step; A fifth process of overlaying the video signal separated in the third process and the graphic data output in the fourth process; A sixth step of receiving a camera signal through an image reading means; A seventh step of receiving a microphone signal through a voice reading means; An eighth process of generating data input through the sixth and seventh processes as an analog signal, respectively; A ninth step of mixing and outputting data output in the eighth step into a digital signal; And a tenth step of transmitting the data converted in the ninth step to a remote location.

Another feature of the present invention for achieving the above object is a multimedia input and output device, the client-server structure that is connected to a remote computer server (Server) via the attached wireless communication control unit (5) It is configured to enable the user to easily use the desired multimedia information anywhere through the multimedia processing unit 6, the multimedia input and output control unit 4 mounted on the multimedia input and output device.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment according to the present invention.

FIG. 1 is a block diagram showing the configuration of the present invention, and has a client-server structure connected to a computer server located at a remote location through an attached wireless communication control unit 5. The multimedia processing unit 6 and the multimedia input / output control unit 4 are mounted so that the user can easily use the desired multimedia information anywhere.

In addition, the system input / output control unit 3 has a function that can be used for applications such as video conferencing or video messages in remote locations through the screen display of multimedia data, pen input, and camera input.

In addition, the peripheral device control unit 2 additionally provides serial and parallel ports, and has an extension function to externally mount a modem device or a printer device for printing a printout.

The operation of the apparatus according to the present invention configured as shown in FIG. 1 is briefly described as follows.

The central control unit 1 executes the initial operation by the operating program in the program storage unit 8.

Accordingly, the central control unit 1 sends the serial data SDATA and the clock signal CLK to the peripheral device control unit 2 to drive the attached modem or printer device.

The system input / output control unit 3 selects the system input / output control unit 3 as the SEL_S signal from the central control unit 1 and, in the case of a video signal through the SIO_DATA bus, mixes a digital 16-bit YUV signal and a digital 8-bit signal to form an analog RGB signal. Is converted into a liquid crystal display (LCD).

In the input through the attached pen, the digital input coordinate value of the pen is input to the central control unit 1 via the SIO_DATA bus.

In addition, when multimedia data is transmitted from a remote location, the multimedia data is transferred directly from the wireless communication control unit 5 to the multimedia processing unit 6 through the M_DAT serial bus line.

In this case, since the multimedia data is compressed in the multimedia processor 6, the multimedia processor 6 restores the multimedia data and converts the multimedia data into a digital 16-bit YUV signal.

Then, the corresponding data converted to the multimedia input / output control unit 4 is sent.

The multimedia input / output controller 4 converts the input digital 16-bit YUV signal into a digital RGB signal, inputs it to the system input / output controller 3, and outputs the overlay to the LCD display.

The video composite signal, which is an analog video signal input from the camera, is converted into a digital RGB signal by the system input / output control unit 3, and the audio signal input from the microphone is input to the multimedia processing unit 6 through the A_SDAT bus line, and the multimedia input / output control unit It is compressed by the multimedia processing unit 6 in an interleave form with the video data transmitted from (4).

The compressed audio-video image data is input to the wireless communication control unit 5 via the MM_DAT bus line and transmitted to the server system at a remote location.

The operation process according to the present invention operating as described above is the same as the flowchart shown in FIG. 2, and FIG.

In the conventional portable computer, there is a personal digital assistant (PDA) or a notebook computer, etc. by providing a multimedia input / output method and apparatus having a client server structure according to the present invention operating as described above. The size is not suitable to carry, the existing personal information terminal is easy to carry, but there is an effect that solves the problem that the function to access the multimedia data of the remote location, or to retrieve the multimedia information is not provided.

Claims (2)

In the multimedia data input / output processing method in a multimedia information terminal, a client is connected to a computer server located at a remote location through a wireless communication control unit, and has a single board type for multimedia input / output processing by mounting an independent power supply and a wireless communication device. A multimedia information terminal having a server-type structure, the multimedia information terminal comprising: a first process of receiving multimedia data at a remote location; A second step of determining whether the data received in the step is image data; A third process of restoring the image data, separating the image and audio signals, and outputting the audio signal to the outside through a speaker when the image data is determined in the above process; A fourth step of outputting graphic data if it is determined that the image data is not image data in the second step; Performing a fifth process of overlaying the video signal separated in the third process and the graphic data output in the fourth process to display to the outside through the LCD display means to receive and process the multimedia data of the remote place, and through the image reading means. A sixth process of receiving a camera signal; A seventh step of receiving a microphone signal through a voice reading means; An eighth process of generating data input through the sixth and seventh processes as an analog signal, respectively; A ninth step of mixing the data output in the eighth step into a digital signal, converting the data into transmission data, reading only the video signal separately, and displaying the video signal to the outside through the LCD display means; And performing a tenth step of transmitting the transmitted data converted in the ninth step to a remote location, thereby transmitting and processing the multimedia data. A multimedia input / output device comprising: a wireless communication control unit (5) connected to a remote computer server and a multimedia processing unit (6) for processing multimedia to enable multimedia communication with a remote computer server via the wireless communication control unit (5) ), A multimedia input / output control unit 4 for controlling input / output of multimedia voice and video processed by the multimedia processing unit 6, a peripheral control unit 2 for controlling serial / parallel input / output with peripheral devices, and a camera. A system input / output control unit (3) for providing a video signal and an input signal through a signal input pen to the multimedia input / output controller (4) or outputting the output video signal of the multimedia input / output controller (4) to an LCD screen; In addition to the control box, a data storage unit 7 and a program storage unit 8 for multimedia communication processing are provided. It is composed of a central control unit (1) to control the entire system to perform the function of the client-server structure connected to the negative computer server, and consists of a single board type that is operated by an independent power source, the user can freely carry the multimedia Multimedia input / output device having a client server structure, characterized in that configured to enable easy use of information.