KR100214527B1 - Multi-function multimedia reproduction apparatus - Google Patents

Abstract

The multi-function multimedia playback apparatus of the present invention is an analog signal input unit for analyzing and digitally processing analog multimedia information from a host, and multimedia for processing various digital multimedia information output from the analog signal input unit using a control program. A processor, a memory unit for recording various data in the multimedia processor and a playback program required for processing the same, a flash memory for storing the control information necessary for reproducing information about a playback device, and a user's selection of the host. A system control unit for transmitting and controlling each component unit, and a user output unit for displaying information processed by the multimedia processor in video and audio so that a user can know it. It is possible to process various multimedia information with one product by composing the common elements of various playback devices used in the city into one multimedia processor and processing information appropriately for the delivery media by giving information about the product before playback in each transmission medium. Also, the producer can overcome the limitations of development and playback by determining the information according to the characteristics of the playback apparatus and processing all that is to be implemented through various control programs required by the producer.

Description

Multifunctional Multimedia Player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multimedia playback apparatus, and more particularly, to a multimedia multifunction playback apparatus capable of playing various types of recording media with one playback apparatus.

Recently, various multimedia playback products using multimedia information that have been digitally compressed for home use include, for example, video CDs or DVD players using optical discs, cable TVs (CATVs) or VODs using communication lines. Video On Demand (VOD), Direct Broad System (DBS) using satellite broadcasting, etc., are spreading to provide various information, clear picture quality and sound quality.

All of these products are digitally converted to information and then compressed by the compression method such as MPEG to transmit the information to the reproduced product, and extracts the compressed information from the reproduced product to the user by using the existing creative or VCR), such as audio products, play with video and audio.

More specifically, in the case of an application using the optical disc shown in FIG. 1, the optical disc 1 on which information is recorded, the pickup 2 for detecting the optical signal reflected from the optical disc, and the pickup Servo 3 for driving, a digital signal processor 4 for digitally processing the data transmitted from the pickup 2, and converting the digital signal processed data to output digital video signals and audio signals. Decoder 5 for controlling, the output unit 6 for processing the digital video signal and the audio signal output from the decoder 5 as an analog signal and output to the TV (TV) 8 and control each component It consists of a control unit 7 for operation, the operation is as follows.

The information recorded on the optical disc 1 is detected by a pickup using an optical system and received as serial data, and then the serial data is transmitted to the digital signal processing unit 4 so that the information is transmitted according to the control signal of the controller 7. Decode, error-detect, and error-correct serial data.

The multimedia information decoded by the digital signal processor 4 is converted into digital video and audio signals that can be decompressed by the decoder 5 and delivered to the user. To this end, the decoding unit 5 is a function for separating the information consisting of the compressed video, audio signal and various programs for controlling it, the function of storing the program information for use in the control unit 7, compressed video, It should include the ability to unpack audio information and organize it for delivery to the user.

In the case of application products using communication lines, which are the media that are attracting the most attention in the current computer environment, bidirectional information is transmitted through modems, faxes, and the like by using a function of grouping the products separated from each other. With the wide range of services such as the Internet, movies and entertainment can be provided at home using a communication line or home shopping can be made through TV.

The cable TV shown in FIG. 2 is one of the application products using such a communication line, and is connected to a host 10 for providing information and the host 10 and a cable communication line (not shown) to provide various information from the host. It is composed of a set-top box (20) for processing so that the user can view through the TV 30, the set-top box 20 detects the channel selected by the user to receive a signal corresponding to the channel A tuner 21 for tuning, an analog-to-digital converter 22 for converting the tuned analog signal into a digital signal, and a digital signal processor 23 for decoding the digitally converted signal and detecting and correcting errors. ), A decoding unit 24 for dividing the decoded signal into a digital video signal and an audio signal so as to be delivered to a user, and an output of the decoding unit 24. Output control unit 25 for converting into a TV signal for viewing through the TV 30, the modem 26 for transmitting both information such as the current user's recognition, the current status between the host and the user and each component It is composed of a control unit 27 for overall control, the operation is as follows.

When the information recorded in the host 10 is transmitted to the tuner 21 of the set-top box 20 through the cable (not shown), the tuner detects the channel selected by the user and operates the analog-to-digital converter 22. The digital signal processor 23 transmits the data to the digital signal processor 23. The digital signal processor 23 performs decoding, error detection, and correction by a quadrature amplitude modulation (QAM) method.

Subsequently, the multimedia information decoded by the digital signal processor 23 is converted into a video and audio signal that can be decompressed by the decoder 24 and delivered to a user. For this purpose, the decoder 24 Is a function of separating information consisting of a compressed video, an audio signal and various programs controlling the same, storing program information for use by the control unit 27, a function of uncompressing compressed video, audio information, and a user thereof. It should include the ability to organize it for delivery.

Subsequently, the output control unit 25 converts the digital video and audio signals output from the decoding unit 24 to the TV 30 so that the user can see them.

In addition, in the case of the application using the satellite broadcasting shown in Figure 3, the cable TV is almost similar, the difference is that the information recorded in the host 10 through the receiving antenna 40 for broadcasting using the satellite (50) The digital signal is to be processed using the Quadrature Phase Shift Key (QPSK) method used in broadcasting after digital conversion.

However, various multimedia playback apparatuses according to the related art cannot be used together even though many common elements are included in the digitally compressed multimedia information processing process. There is a problem of economic loss because you have to buy.

Accordingly, an object of the present invention is to configure a common element in one multimedia processor to solve the above problems and to give information about the product before playback in each delivery medium to properly process the information in one product. It is to provide a multi-functional multimedia playback device that can process a variety of multimedia information.

1 is a block diagram showing the configuration of an optical disc application product as a multimedia player according to the prior art.

2 is a block diagram showing the construction of a communication line application product as a multimedia reproduction apparatus according to the prior art.

3 is a block diagram showing the configuration of a satellite broadcasting application product as a multimedia playback apparatus according to the prior art.

4 is a block diagram showing the configuration of a multi-function multimedia playback apparatus according to the present invention.

5 is a block diagram showing a detailed configuration of the multimedia processor of FIG.

6 is a block diagram showing the detailed configuration of the user output unit of FIG.

* Explanation of symbols for main parts of the drawings

310: analog signal input unit 320: multimedia processor

330: Memory unit 340: System control unit

350: flash memory 360: user output unit

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 4, the multi-function multimedia playback apparatus of the present invention includes an analog signal input unit 310 for analyzing and digitally processing multimedia information as various types of analog signals from a host that manages various types of information. A multimedia processor 320 for processing digital multimedia information output from the analog signal input unit 310, a memory unit 330 for recording various data in the multimedia processor and a playback program for processing the same, and a playback device Flash memory 350 for storing the information and control information necessary for playback, and connected to the host 200 and the user input unit 100 to transmit a user's selection to the host, and transmit the user's selection to the various playback apparatuses from the multimedia processor. Information about the camera and required information for playback The system controller 340 for controlling the multimedia processor 320, and the user output unit 36 for displaying the information processed by the multimedia processor 320 in video and audio so that the user can know It is configured to include.

The user input 100 generally refers to various methods of transmitting a function desired by a user to a system using a remote controller, a mouse, a joystick, or a keyboard, and may be determined by a system configuration.

The host 200 is an entity that collectively operates various multimedia information. The host 200 has various types of information and has various kinds of control programs for processing the information according to the user's requirements and the present invention.

The analog signal input unit 310 is an optical disk processing unit 311 for digitally converting the information recorded on the optical disk to be processed by the multimedia processor by analyzing the various signals using the optical, and analyzes the various signals coming through the communication line Communication module 312 for digital conversion for processing by the multimedia processor after modulating through a tuner and a satellite for digital conversion for processing by the multimedia processor after modulating the broadcast wave received through a satellite broadcasting antenna And a broadcast processor 313.

As illustrated in FIG. 5, the multimedia processor 320 includes an information input unit 321 for inputting information output from the analog signal input unit and a control program output from the system control unit, and general control of each component in the multimedia processor. Control unit 322 for performing a multimedia function by the multimedia processor, an external memory connection unit 323 for connecting the external memory and the control unit 322, various external devices (audio codecs) and the The external device connection unit 324 for connecting the control unit, the internal memory 325 for recording various information necessary for internal use in the multimedia processor, and various kinds of information at high speed according to the control signal of the control unit 322. The preprocessing unit 326 for processing and the video information processed by the operation unit 326 And a video information processing unit 327 for processing and outputting the digital information, and a digital signal processing unit 328 for processing a variety of decoding and modulation algorithms at high speed.

As illustrated in FIG. 6, the user output unit 360 may include a digital video output from the multimedia processor, for example, when a user uses a TV as an output device capable of detecting an actual video signal and an audio signal. First and second digital-to-analog (D / A) converters 351 and 352 for analog processing audio signals, and analog video signals output from the first D / A converter to be encoded for TV and output to the TV. And an audio signal processing unit 364 for filtering and amplifying the analog audio signal output from the TV encoder 363 and the second D / A converter 352.

The multi-function multimedia playback apparatus according to the present invention configured as described above, processes a variety of components related to the playback configured in the existing multimedia playback apparatus with a single multimedia processor, and performs the various functions performed by each element multimedia processor The software can be used for various types of playback with a single playback device. The operation method can be divided into two types, the decision of the playback device and the playback by the playback device. same.

First, the operation for determining the playback device, the user through the user input unit to determine the desired playback device while looking at the initial screen, the system control unit controls the control program of the playback device necessary for the playback device determined from the host the analog signal One of the various methods of the input unit 310 is selected and downloaded.

In addition, the downloaded control program is stored in a flash memory for use by the system controller, and the system controller performs initialization for each function so that the internal blocks can work. Therefore, a digital signal algorithm for modulation, error detection, and error correction is also prepared.

On the other hand, when the playback device is determined, playback by the playback device is started.

The final output to be reproduced is the same as the video and audio signal that is reproduced in each existing playback device, the home appliance such as a TV, the user enjoys the desired modulation information.

All the functions of the playback are processed by the software operated according to the adjustment of the system control unit using the control program prepared by the playback device determination by the time division method in the multimedia processor. Use the same method as the decision.

The system controller uploads a control program suitable for the characteristics of the information currently being transmitted to the memory unit using a control program stored in a flash memory, and the controller of the multimedia processor uses an internal memory and a calculation unit using the control program uploaded to the memory unit. If the control program according to the transmitted information does not exist in the memory unit, the controller may request the system controller.

The information transmitted from the analog signal input unit is processed by an algorithm suitable for each medium in the digital signal processor, and stored in the memory unit or transmitted to the system controller through the information input unit as a flash memory or reproduced to the video information processor. Outputs a video signal and an audio signal by an external device connection unit to a user output unit.

The system controller continuously exchanges information using a communication line with a host during playback, which is necessary for a function such as a smart card used in conventional satellite broadcasting and may be used for home shopping in the future.

As described above, according to the present invention, by configuring a common element of the various playback devices used in multimedia playback in one multimedia processor and processing the information appropriately for the delivery medium by giving information about the product before playback in each delivery medium A single product can handle a variety of multimedia information, and producers can overcome the limitations of development and playback by determining the information according to the characteristics of the playback device and processing all that they want to implement through various control programs that they need. It can be effective.

Claims (3)

An analog signal input unit for analyzing and digitally processing analog multimedia information from a host; a multimedia processor for processing various digital multimedia information output from the analog signal input unit using a control program; A memory unit for recording a reproducing program required to process this, a flash memory for storing the control information necessary for reproducing information about the reproducing apparatus, and a system for transmitting a user's selection to the host and collectively controlling each component. And a control unit and a user output unit for displaying information processed by the multimedia processor in video and audio so that a user can know the information. 2. The apparatus of claim 1, further comprising: an information input unit for inputting the analog signal input unit and an output of the system control unit, a control unit for overall control of each component unit in the multimedia processor, an external memory connection unit for connecting the external memory unit and the control unit; An external device connection unit for connecting various external devices to the control unit, an internal memory for recording various types of information necessary for internal use in a multimedia processor, an operation unit for processing various types of information, and a video processed by the operation unit. And a video signal processor for processing and outputting information into one frame information and a digital signal processor for processing algorithms related to decoding and modulation. The multi-function multimedia playback apparatus of claim 1, wherein the system controller continuously exchanges information with the host even during playback.