KR20040098338A - Signal processing apparatus of digital multi media broadcasting receiver - Google Patents

Abstract

PURPOSE: A signal processing device of a digital multimedia broadcast receiver is provided to receive signals delivered through a digital multimedia broadcast scheme to decode into moving images, data, and audio signals, and to output the decoded signals while storing the signals in a storage medium, so that a user can see moving images through a receiver. CONSTITUTION: A tuner(20) receives a selected frequency. A decoder(30) extracts moving image data and audio signals included in the frequency, decodes the data and the signals, and outputs the decoded data and the signals. An audio processor(40) converts the decoded audio signals into analog audio signals to output the analog signals. A video processing/graphic processor(50) converts the decoded moving image data into analog signals to output the signals. A main controller(60) outputs a frequency selection signal to the tuner(20), and controls an entire system such that the moving images, the data, and the audio signals stored in the first storage(10) can be supplied to a user. A display(70) outputs the moving image signals on a screen.

Description

SIGNAL PROCESSING APPARATUS OF DIGITAL MULTI MEDIA BROADCASTING RECEIVER}

The present invention relates to a signal processing apparatus of a digital multimedia broadcasting receiver.

In more detail, the digital multimedia broadcasting method receives a signal transmitted through the digital multimedia broadcasting method, decodes the video, data, and audio signals, and outputs the data through each output terminal. The present invention relates to a signal processing apparatus of a digital multimedia broadcasting receiver that enables not only to view a moving image through a receiver but also to frequently view a moving image stored in a storage medium.

Digital multimedia broadcasting is a next generation digital radio broadcasting technology that can replace AM and FM analog radio broadcasting for listening to music.

When the digital multimedia broadcasting technology is used, it is possible to provide various additional data services such as securities, traffic information, weather, as well as CD (Compact Disc) level audio service.

In addition, the digital multimedia broadcasting method uses a transmission method of orthogonal frequency division multiplexing (OFDM) used in digital video broadcasting (DVB) and wireless LAN, so that additional data services can be stably received even at high speed. can do.

In particular, since the digital multimedia broadcasting method can serve data to a plurality of users at the same time, the digital multimedia broadcasting method supports the users at a much lower price than the existing mobile communication network.

In addition, the digital multimedia broadcasting method can be applied to the MP3 player, telematics system, and the like, and many companies are spurring the development of systems necessary for digital multimedia broadcasting services such as receiving modules and sets.

Accordingly, the present invention has been made in accordance with the system development of the companies as described above, the object of the present invention is to receive the signal transmitted by the digital multimedia broadcasting method, decoded into a video, data and audio signal and output each Signal from digital multimedia broadcasting receiver that outputs through a terminal and saves in a predetermined storage media so that the video serviced through digital multimedia broadcasting method can be viewed through the receiver, and the video stored in the storage media can be viewed at any time. It is to provide a processing device.

1 is a block diagram illustrating a signal processing apparatus of a digital multimedia broadcasting receiver according to the present invention.

*** Explanation of main parts of drawing ***

100: digital multimedia broadcasting receiver

10: first storage unit 20: tuner

30: decoding unit 40: audio processing unit

50: Video processing / graphic processing unit

60: main control part 70: display part (LCD)

80: second storage unit

An embodiment of the present invention for achieving the above object is a receiving apparatus for receiving a digital audio signal and additional data processed according to a digital audio broadcasting method and providing the user to a frequency tuning signal input from the outside. A tuner for receiving a tuned frequency in response; A decoding unit for extracting video data and an audio signal included in the tuned frequency in response to a control signal input from the outside and then decoding and outputting the same according to a preset format; An audio processor converting the audio signal decoded by the decoding unit into an analog audio signal and outputting the analog audio signal; A video processing / graphic processing unit for converting the video data decoded by the decoding unit into an analog signal and outputting the analog signal; A system for outputting a frequency tuning signal corresponding to a key signal input according to a user's intention to the tuner, while providing a video, data and audio signal included in a frequency tuned by the tuner to the user. A controlling main controller; And a display unit for outputting a moving image signal output from the video processing / graphic processing unit on the screen under the control of the main control unit. A signal processing apparatus for a digital multimedia broadcasting receiver, comprising: a solution to the above problems.

In addition, the signal processing apparatus of the digital multimedia broadcasting receiver, characterized in that it comprises a storage means for storing the moving picture data processed by the video processing / graphics processing unit, the above-mentioned problem is solved.

The present invention also provides a signal processing apparatus for a digital multimedia broadcasting receiver, comprising a first port for outputting moving image data processed by the video processing / graphic processing unit.

The present invention also provides a signal processing apparatus for a digital multimedia broadcasting receiver, comprising a second port for outputting moving image data processed by the video processing / graphic processing unit.

The storage means is one of a hard disk, a flash memory, and an external storage medium. The signal processing apparatus of the digital multimedia broadcasting receiver solves the above problems.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the digital multimedia broadcasting receiver 100 to which the present invention is applied includes an operation program for the main controller 60 to be described later to operate the entire system of the digital multimedia broadcasting receiver 100. A first tuner 10, a tuner 20 for receiving a tuned frequency in response to a frequency tuned signal input from the main control section 60, and the tuner in response to a control signal input from the main control section 60; A decoding unit 30 which extracts the video data and the audio signal included in the received frequency and decodes the signal according to a preset format, and converts the audio signal decoded by the decoding unit 30 into an analog audio signal and outputs the analog audio signal. An audio processor 40 and a video processor for converting the video data decoded by the decoder 30 into analog signals and outputting the analog signals. And a graphic processing unit 50 and a frequency tuning signal corresponding to a key signal input according to a user's intention to the tuner 20, while moving images and data included in the frequencies tuned by the tuner 20. And a main controller 60 for controlling the entire system according to an operation program stored in the first storage unit 10 so as to provide an audio signal to the user, and the video processing under control of the main controller 60. And a display unit 70 for outputting a moving image signal output from the graphic processing unit 50 on the screen, and a second storage unit 80 storing the moving image data processed by the video processing / graphic processing unit 50. do.

The digital multimedia broadcasting receiver 100 includes a first port for outputting moving image data processed by the video processing / graphic processing unit 50. In this case, the first port is a USB port, and the digital multimedia broadcasting receiver 100 transmits video data received through the antenna to a computer system connected through a USB port.

In addition, the digital multimedia broadcasting receiver 100 further includes a second port for outputting digital video processing at high speed in addition to the USB port, wherein the second port is an RS1394 port.

The second storage unit 80 may include a hard disk, a flash memory, an external storage medium, and various storage media, and the second storage unit 80 may include both an internal storage device and an external storage device.

The operation of the signal processing apparatus included in the digital multimedia broadcasting receiver configured as described above is as follows.

First, the main control unit 60 reads the operation program stored in the first storage unit 10 when the user turns on the power of the digital multimedia broadcasting receiver 100 so that the entire system can be operated by the operation program. To control the system.

When the user selects a channel by using a key input means not shown in the drawing, the main control unit 60 receives a key signal corresponding to the channel, and receives a frequency tuning signal corresponding to the key signal from the tuner. Output to (20). In this case, the tuner 20 may receive a frequency of 175 to 242 MHz or a frequency of 1452 to 1492 MHz. The frequency tuning signal is a signal for selecting a channel of the frequency band. In this case, the signal is a signal obtained by synthesizing and processing a digital audio signal processed according to a digital multimedia broadcasting scheme and video data encoded in MPEG4 according to a predetermined scheme.

Then, the tuner 20 receives only the signal of the channel corresponding to the frequency tuning signal of the main controller 60 among the signals received through the antenna and outputs the signal to the decoding unit 30.

The decoding unit 30 decodes the received signal according to a preset format, and then outputs audio data to the audio processing unit 40, and outputs the audio data to the audio processing unit 40. ) In this case, the audio data decoded by the decoding unit 30 is basically encoded by MPEG 1 Layer 2 or MPEG 2 Layer 2 or AC (Advanced Audio Coding), and encoded by WMA (Widow Media Audio). The encoded audio data is decoded by the decoding unit 30. That is, the decoding unit 30 converts the signal input from the tuner 20 into a digital signal, and separates the audio signal and the video signal from the converted signal to the audio processing unit 40 and the video processing / graphic processing unit ( 50). In particular, the decoding unit 30 divides the muxed signal into digital audio signals, digital video signals, and digital additional data signals according to the digital multimedia broadcasting standard, and outputs them to respective processing blocks.

Then, the audio processor 40 converts the audio data into an analog signal and outputs the L and R ports of the speaker, respectively.

The video processing / graphics processing unit 50 processes the decoded moving image data so as to be output through the display unit 70, that is, the LCD. Of course, the video processing / graphic processing unit 50 outputs a video signal to a USB port or an RS1394 port provided in the digital multimedia broadcasting receiver 100. At this time, the USB port is connected to the computer system, and the received video is stored in the computer system, so that it can be viewed again later. Meanwhile, the video processing / graphics processing unit 50 performs an audio processing process separately so that audio data is output to the USB port, the RS1394 port, and the second storage unit 80 together with the video data. .

In addition, the RS1394 port is a port to which the corresponding processing system is connected when a high speed digital video processing that cannot be supported by the USB port is performed.

Meanwhile, the main controller 60 controls the video processing / graphic processing unit 50 in response to a storage key signal input according to a user's intention, and the video processing / graphic processing unit 50 controls the decoding unit 30. Decoded video data and audio data are stored in the second storage unit 80.

The decoding unit 30 and the video processing / graphics processing unit 50 applied to the present invention process moving image data compressed by the MEPG-4, but may process other kinds of moving images in addition to the MEPG-4. In the present invention, the audio data is encoded by AAC (Advanced Audio Coding), which meshes with the MEPG-4 video. That is, the AAC has the best compression and sound quality among the existing audio coding.

Accordingly, the present invention receives a signal transmitted through a digital multimedia broadcasting to a digital multimedia broadcasting receiver, decoded into a video, data and audio signal to be output through the respective output terminals, so that the desired processing system such as a computer system The video can be stored and used again for later viewing or use. Unlike conventional digital audio broadcasting receivers, video data can be additionally received and output in addition to digital audio signals and additional data. Achieve effect.

In addition, the present invention has the effect of storing the moving picture and audio data transmitted by digital multimedia broadcasting in the internal or external storage medium, so that the stored video can be viewed at any time.

The present invention has the effect of having a function of storing and processing various additional data.

The present invention is not limited only to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical spirit of the present invention.

Claims (5)

A receiving apparatus for receiving a digital audio signal and additional data processed according to a digital audio broadcasting method and providing the same to a user, A tuner for receiving a tuned frequency in response to a frequency tuned signal input from the outside; A decoding unit for extracting video data and an audio signal included in the tuned frequency in response to a control signal input from the outside and then decoding and outputting the same according to a preset format; An audio processor converting the audio signal decoded by the decoding unit into an analog audio signal and outputting the analog audio signal; A video processing / graphic processing unit for converting the video data decoded by the decoding unit into an analog signal and outputting the analog signal; A system for outputting a frequency tuning signal corresponding to a key signal input according to a user's intention to the tuner, while providing a video, data and audio signal included in a frequency tuned by the tuner to the user. A controlling main controller; And A display unit for outputting a moving image signal output from the video processing / graphic processing unit on a screen according to the control of the main control unit; Signal processing apparatus of the digital multimedia broadcasting receiver, characterized in that configured to include. The method of claim 1, And a storage means for storing moving image data processed by the video processing / graphic processing unit. The method of claim 1, And a first port for outputting moving image data processed by the video processing / graphic processing unit. The method of claim 1, And a second port for outputting moving image data processed by the video processing / graphic processing unit. The method of claim 2, wherein the storage means, Signal processing apparatus of the digital multimedia broadcasting receiver, characterized in that any one of a hard disk, a flash memory and an external storage medium.