KR20040022736A - Portable encoder using mpeg-4 technology - Google Patents

Abstract

PURPOSE: A portable encoder using an MPEG(Moving Picture Experts Group)-4 technology is provided to encode/store a moving image inputted from the outside as a high quality moving image, record/play a voice and a sound in an MP3(MPEG level 3) technology, and encode/store the moving image captured from the moving image by using a camera and a microphone. CONSTITUTION: An MPEG4 encoder(50) encodes the audio and the video signal to an MPEG4 standard. A digital video input part(60) receives a digital video signal in an IEEE1394(Institute of Electrical and Electronics Engineers) standard and outputs it to the MPEG4 encoder. A video signal processor(20) outputs the signal inputted through a video signal input part(10). An audio signal processor(40) outputs the signal inputted through an audio signal input part(30). A storage(100) and a memory card(110) store the compressed data of the MPEG4 encoder. A stereo decoder(130) decodes/outputs the audio data stored in the storage through an audio output part(140). A controller(70) controls an operation state of the MPEG4 encoder, the I/O of the data transferred to each part, and outputs the data stored in the storage through the stereo decoder.

Description

PORTABLE ENCODER USING MPEG-4 TECHNOLOGY

The present invention relates to a portable encoder using MPEG-4 technology, and more particularly, to connect a camcorder or the like to encode a video input from the outside in MPEG-4 format and to record a high-quality video and to record voice and sound in an MP3 manner. In addition to using a small camera and microphone that can be installed separately, video can be recorded directly and simultaneously recorded and stored on a memory card, and the saved multimedia video can be output through a USB port or transmitted through a memory card. It is about a portable encoder using MPEG-4 technology that can be carried in a small size for watching a video on a PC or PDA.

Recently, the development of ultra-high speed optical communication technology and data communication technology using the same have transformed the monotonous voice service-oriented communication service market into a multimedia service market that combines video and voice. The speed of the Internet service is also changed from the initial modem connection to the VDSL transmission technology by optical communication, and the upload and download speed is reaching 10MHz.

This high-speed communication technology has made multimedia a part of life and digital media dominates every company and home.

In the case of voice and sound equipment, analog sound is reproduced as analog voice sound or digital sound signal compressed in MP3 format, such as MP3 player, from a conventional tape player or CD player method, in which a sound signal is directly recorded and played using magnetic tape or CD. Devices that can compress and store or play back MP3s directly from signals have emerged.

These devices are very small in size compared to the existing devices and are easy to carry, and the configuration of the devices is very simple and inexpensive. Besides, it is possible to download MP3 voice signals freely from the Internet through a PC directly connected to the PC. You can also upload and send messages with your own voice or music.

In addition, in the case of cameras and camcorders, digital cameras and digital camcorders have become more popular in film cameras and analog camcorders in the past, and their storage means have been converted from photo prints, VHS tapes and 8mm tapes to photo files and 6mm digital tapes. In response, consumers' demands are shifting from poor-quality tape media to CDs and video files, which are digital media that do not change quality even after playing thousands of times.

On the other hand, in the case of a video recording or playback device such as a camcorder or VCR, the same attempt is made. Moving picture Experts Group 1 (MPEG-1) and MPEG-2 format video files of video signals are standardized, and software for playing and viewing these video files on a PC is already commercially available.

However, there are devices that can convert analog video captured by an optical camera to digital and convert it into MPEG-1 and MPEG-2 video files. However, it is expensive and the converted data is too large to encode a large amount of data. There is no problem.

Also, these devices are generally designed with the aim of converting the captured image using a camcorder or digital camera to MPEG-1 or MPEG-2 in an indoor environment equipped with a PC. As a method of application, an encoding board must be installed on a PC to encode or use a separate encoding device. These devices are large in size, difficult to move, and expensive, and can be used only by broadcasters and experts, and are difficult to carry.

Meanwhile, with the recent development of wireless Internet technology and the development of portable PCs such as laptop PDAs, camcorders have also been miniaturized to be very portable, and the image quality of the video has been greatly improved. IDC (Internet Data Center) is located in various places so that subscribers can easily access the Internet anytime, anywhere to send and receive the data they want.

In addition, video-related peripherals have undergone a number of developments and changes in recent years, leading to the development of devices capable of receiving video signals from camcorders, encoding them as MPEG signals, and storing them in a small memory.

However, these devices have poor picture quality due to the performance limitations of the MPEG encoding chip, and the deterioration of the picture quality is obvious when the screen is enlarged. There is a disadvantage in that it is supplied.

The present invention was created to solve the above problems, and an object of the present invention is to connect to a camcorder or the like to encode a video input from the outside in MPEG-4 format to store the high-definition video and at the same time the voice and sound in the MP3 method Not only can you record and play back, you can also record videos directly and record them on a memory card by using a small camera and microphone that can be installed separately. You can also output saved multimedia videos through a USB port or via a memory card. It is to provide a portable encoder using MPEG-4 technology that can be carried in a small size for watching a video on a PC or PDA.

1 is a block diagram schematically illustrating a portable encoder using MPEG-4 technology.

2 is a diagram showing an embodiment of a portable encoder using MPEG-4 technology according to the present invention.

-Explanation of symbols for the main parts of the drawings-

10: video signal input unit 20: video signal processing unit

30: audio signal input unit 40: audio signal processing unit

50: MPEG4 encoding unit 60: digital video input unit

70: control unit 80: display unit

90: operation unit 100: storage unit

110: memory card 120: USB input / output unit

130: stereo decoding unit 140: audio signal output unit

The present invention for realizing the above object is a video signal input unit for receiving a video signal, an audio signal input unit for receiving an audio signal, an audio output unit for outputting an audio signal in stereo, data in USB standard USB input / output unit for inputting / outputting video signal, MPEG4 encoding unit for encoding video signal and audio signal in MPEG-4 standard, Digital video input unit for receiving digital video signal in IEEE1394 standard and outputting to MPEG4 encoding unit, Video signal input A video signal processor for outputting to the MPEG4 encoder to decode the signal input through the encoder, an audio signal processor for encoding and digitally processing the signal input through the audio signal input and output to the MPEG4 encoder, and a compression of the MPEG4 encoder. To store collected data And a memory card for storing, detaching, and moving the compressed data of the MPEG4 encoding unit, a stereo decoding unit for decoding and outputting audio data stored in the storage unit through a audio output unit as a stereo signal, and an MPEG4 encoding unit. Control unit for selecting the encoding method, playback method and operation, and control the operation state of the MPEG4 encoding unit according to the state of the control unit, as well as input and output of data to the storage unit or memory card and USB input / output unit or digital video input unit. A control unit for controlling input / output of data and outputting data stored in a storage unit through a stereo decoding unit, and a display unit for displaying an operation state of the control unit.

The type encoded by the MPEG4 encoding unit is characterized in that the MPEG-1, MPEG-2, MPEG-4, MP3.

According to the present invention made as described above, a video signal or an audio signal input through a video signal input unit, an audio signal input unit and a digital video input unit is encoded through an MPEG4 encoding unit by a method selected by an operation unit and stored in a storage unit or a memory card, or via a USB input / output unit. It outputs to the outside and decodes the audio signal stored in the storage unit to the stereo output through the audio signal output unit is operated to listen to music.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, this embodiment is not intended to limit the scope of the present invention, but is presented by way of example only.

1 is a block diagram schematically illustrating a portable encoder using MPEG-4 technology.

As shown here, a video signal input unit 10 for receiving a video signal, an audio signal input unit 30 for receiving an audio signal, an audio signal output unit 140 for outputting an audio signal in stereo, A USB input / output unit 120 for inputting / outputting data in a USB standard, an MPEG4 encoding unit 50 for encoding a video signal and an audio signal in an MPEG-4 standard, and an MPEG4 encoding unit receiving a digital video signal in an IEEE1394 standard. A digital video input unit 60 for outputting to 50 is provided.

At this time, the video signal input unit 10 and the audio signal input unit 30 is composed of an RCA terminal configured to receive a video signal or an audio signal output from an analog camcorder, VCR, DVD, TV, microphone, etc. 140 is composed of a stereo terminal to connect the stereo jack, such as earphones to listen to music.

The USB input / output unit 120 is connected to a computer or a web camera supporting a USB standard and configured to exchange data.

The digital video input unit 60 is configured to input an image and an audio output from a digital camcorder supporting the IEEE 1394 standard.

In addition, the type encoded by the MPEG4 encoding unit 50 encodes MPEG-1, MPEG-2, and MP3 standards including MPEG-4.

In addition, the video signal processing unit 20 for outputting the signal input through the video signal input unit 10 to the MPEG4 encoding unit 50 and the signal input through the audio signal input unit 30 are encoded and Compression of the audio signal processor 40 for sound processing and output to the MPEG4 encoder 50, the storage 100 for storing the compressed data of the MPEG4 encoder 50, and the MPEG4 encoder 50 The memory card 110 to store the removable data to be removable and moved, and the stereo decoding unit for decoding and outputting the audio data stored in the storage unit 100 via the audio signal output unit 140 as a stereo signal ( 130, an operation unit 90 for selecting an encoding method, a reproduction method and an operation through the MPEG4 encoding unit 50, and an operation state of the MPEG4 encoding unit 50 in accordance with the state of the operation unit 90. not It controls the input and output of the data moving to the storage unit 100 or the memory card 110 and the input and output of the data moving to the USB input / output unit 120 or the digital video input unit 60 and stereo the data stored in the storage unit 100. The control unit 70 for outputting through the decoding unit 130, and the display unit 80 for displaying the operating state of the control unit 70.

Here, MPEG-4 (Moving Picture Experts Group 4) is a standard for next-generation multimedia that is proposed and standardized by SG29 WG11 under ISO / IEC. Its applications include broadcasting, home shopping using broadcast, real-time moving picture, animation and voice transmission. It can be used in various programs such as education, entertainment, home shopping or information guide on the Internet, and the important advantage of MPEG-4 is that each media used in the existing multimedia communication is viewed as a single object. It is an object-oriented system that allows you to construct an object, and is a technology that enables independent processing of objects.

Referring to the operation of the present invention made as described above are as follows.

First, a digital video (DV) video signal recorded by a digital camcorder is input to the MPEG4 encoding unit 50 through the IEEE1394 interface of the digital video input unit 60, and the video signal of the digital video in the MPEG4 encoding unit 50 is MPEG-. 1, encoded as MPEG-2, MPEG-4 video files. The signal compressed into the MPEG file is stored in the built-in storage unit 100 or the memory card 110.

The same process applies to converting video or audio signals output from external analog camcorders, VCRs, TVs, DVDs, and microphones without using a digital camcorder.

That is, the video signal and the audio signal output from the analog camera are input through the video signal input unit 10 and the audio signal input unit 30, respectively, and the video signal is decoded by the video signal processing unit 20 to decode the MPEG4 encoder 50. The audio signal is encoded by the audio signal processor 40 and digitally processed to be input to the MPEG4 encoder 50.

The video and audio signals input in this way are encoded by the MPEG-4 encoding unit 50 according to MPEG-1, MPEG-2, MPEG-4, etc. and stored in the embedded storage unit 100 or the memory card 110. .

In addition, when the user tries to view or output the MPEG video file stored in the storage unit 100 or the memory card 110 to the outside, when connected to a computer that supports the USB standard through the USB input / output unit 120, the USB input / output unit By outputting data stored in the storage unit 100 or the memory card 110 through the 120, the video file stored in the storage unit 100 or the memory card 110 using a video playback software such as a Windows media player in a computer. Can be played back.

In addition, when the memory card 110 can be mounted and used in a computer, the memory card 110 may be detached from the portable encoder according to the present invention, mounted in the computer, and the data stored in the memory card 110 may be reproduced. .

The video encoded by the MPEG4 encoding unit 50 can encode VGA-quality image quality of 160 × 120, 240 × 160, 320 × 240, 640 × 480 into a high-definition video without interruption at 10, 15, 30 frames per second. The user can select the image quality and the frame of the encoded image through the operation unit 90.

In addition, when a user inputs his or her own voice to the audio signal input unit 30 using a microphone, the audio signal processor 40 receives the audio signal, encodes the same, and performs digital sound processing to convert the MPEG4 encoder 50 into an MP3 file. By encoding it directly through the stereo decoding unit 130 to convert it into a digital audio sound signal and then output it to the audio signal output unit 140 can be directly enjoyed, as well as to the storage unit 100 or memory card 110 If you do, you can also use it as a voice recorder and MP3 player.

In addition, when the MP3 file stored in the memory card 110 in the computer is mounted on the portable encoder of the present invention, the control unit 70 may convert the digital sound signal and then output the digital sound signal through the audio signal output unit.

On the other hand, the display unit 80 displays the operation state of the controller 70, the remaining capacity of the battery, and the storage time such as the remaining capacity of the storage unit 100 or the memory card 110.

As described above, the present invention encodes the video recorded by the camcorder as MPEG-4 file in real time by connecting the digital video input unit 60 and the camcorder to the storage unit 100 or the memory card 110. Or capture video and sound directly using an analog camcorder and microphone separately from the camcorder, and convert it to MPEG-4 files in real time from the MPEG4 encoding unit 50 and then store it in the built-in storage unit 100 or Stored in the memory card 110.

After saving the video like this, you can connect to the computer or PDA and watch the saved video using the Windows multimedia player built in the computer or PDA and remotely control the video through the internet network through the computer or the wireless internet network through the PDA. Can be sent to.

2 is a diagram showing an embodiment of a portable encoder using MPEG-4 technology according to the present invention.

The portable encoder using the MPEG-4 technology according to the present invention is configured in a state in which the volume of the cigarette pack is about the size of the cigarette pack in a state where the memory card is detachably mounted therein, so that the portable device can be easily carried.

As shown here, the control unit 90 for selecting the size of the image encoded by the MPEG4 encoding unit 50 or recording (REC), stop (STOP), set (SET), and the setting status and operation as shown here. A display unit 80 for displaying the status is provided, and a digital video input unit 60, a USB input / output unit 120, a video signal input unit 10, and an audio signal input unit 30 are configured on the back side, and a power adapter can be connected. The connector (DC IN) is configured. In addition, the insertion hole 115 and the battery BAT are coupled to the side to insert the memory card 110.

As described above, the present invention can connect to a camcorder or the like to encode a video input from the outside in MPEG-4 format and store it as a high-definition video, and to record and play back voice and sound in an MP3 manner as well as to install it separately. By using a small camera and microphone, video can be recorded and recorded simultaneously and saved on a memory card. Small multimedia cameras and microphones can be used to output a multimedia video through a USB port or transfer it through a memory card for viewing on a PC or PDA. It has the advantage of being portable in size.

In addition, the compressed video according to the present invention can be transmitted in real time via the Internet, there is an advantage that can build an Internet broadcast station.

Claims (2)

A video signal input unit for receiving a video signal; An audio signal input unit for receiving an audio signal, An audio output unit for outputting audio signals in stereo; USB input / output unit for inputting / outputting data in USB standard, MPEG4 encoding unit for encoding video signals and audio signals in MPEG-4 standard, A digital video input unit for receiving a digital video signal according to the IEEE1394 standard and outputting it to an MPEG4 encoding unit; A video signal processor for outputting the signal inputted through the video signal input unit to the MPEG4 encoder; An audio signal processor for encoding and digitally processing the signal input through the audio signal input unit and outputting the digital signal to the MPEG4 encoder; A storage unit for storing the compressed data of the MPEG4 encoding unit; A memory card configured to store, detach and move the compressed data of the MPEG4 encoding unit; A stereo decoding unit for decoding and outputting audio data stored in the storage unit as a stereo signal through the audio output unit; An operation unit for selecting an encoding method, a reproduction method, and an operation through the MPEG4 encoding unit; In addition to controlling the operation state of the MPEG4 encoding unit according to the state of the operation unit, the storage unit controls the input / output of data moving to the storage unit or the memory card and the input / output of data moving to the USB input / output unit or the digital video input unit. A control unit for outputting data stored in the stereo decoding unit; Display unit for displaying the operating state of the controller Portable encoder using MPEG-4 technology, characterized in that consisting of. The portable encoder according to claim 1, wherein the type encoded by the MPEG4 encoder is MPEG-1, MPEG-2, MPEG-4, or MP3.