• Title/Summary/Keyword: object audio

Search Result 95, Processing Time 0.03 seconds

Dynamic Timed Multimedia Synchronization Model for Efficient Quality of Service (효율적인 서비스 품질을 위한 동적 시간형 멀티미디어 동기화 모델)

  • 이근왕;오해석
    • Journal of the Korean Institute of Telematics and Electronics C
    • /
    • v.36C no.10
    • /
    • pp.75-80
    • /
    • 1999
  • Multimedia synchronization model for distributed, continuous or discrete media that was guaranteed high quality of service is requited in developing multimedia application software. In this paper we have specific object controller which is called dynamic key media that is changed by user event generation. This becomes media whose event occurrence and periods can't be predicted. For event occurrence not only audio but also text and image can be chosen for key media and performs its role. Object controller transfers information for next transition. The proposed model offers high qualify of services by permitting maximum allowed jitter and skew in playout time and verified its effectiveness by simulation.

  • PDF

Resource Manager of QoS Supporting of Q-MOTP for Multimedia Object Data Transfer in MPLS Network Using Q-CBQ (Q-CBQ기반 MPLS망에서 Q-MOTP의 멀티미디어 객체 데이터 전송 QoS 지원을 위한 자원 관리자)

  • Choi, Won-Keun
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.38B no.12
    • /
    • pp.962-966
    • /
    • 2013
  • The internet will should require the QoS(quality of service) guarantees that the real-time traffic like as audio and video data will be operated well in the future. We had designed Q-MOTP which transfer multimedia object data and proved excellent performance. This paper describes an adaptive QoS management architecture and mechanism based on the information of system resources. Resource manager reports the system resource information periodically or when resources are in the overload state, or on demand by the QoS manager. By using this information, the QoS manager can predict QoS degradation and perform CAC.

Design of a Carousel Manager for Data Broadcasting Services (양방향 데이터방송 서비스를 위한 캐러셀 관리자 설계)

  • Kang Min-Goo
    • The Journal of the Korea Contents Association
    • /
    • v.5 no.5
    • /
    • pp.78-84
    • /
    • 2005
  • Various kinds of data broadcasting services can be offered using a return-channel in digital broadcasting TV compared to analog services. In these data broadcasting environments, several data(associated with TV broadcasting programs, or not) are provided to the TV audiences except for audio/video broadcasting data. In this paper, a structure of data manager for data/object carousel, based on data broadcasting protocols, was proposed for data broadcasting services using a return-channel, and were supported to the production technologies of DTV contents. These contents application techniques for DTV will be implemented with this data manager in MPEG2-TS data broadcasts using PID(Packet ID).

  • PDF

Development of software demultiplexer for DTV Signal Reception (DTV 수신을 위한 소프트웨어 Demultiplexer 개발)

  • Jin, Hyun-Joon;Park, Nho-Kyung;Kim, Moo-Han
    • Journal of IKEEE
    • /
    • v.7 no.2 s.13
    • /
    • pp.188-196
    • /
    • 2003
  • In this paper, a demultiplexer for MPEG-2 Transport Stream which can be applied to terrestrial digital broadcast is developed. The demultiplexer separates video, audio, and data from MPEG-2 multimedia stream and transports them to each decoders respectively. While most existing demultiplexers of MPEG-2 transport stream have been developed as hardware systems, but the fast increment of computer's performance enables a software demultiplexer to be worked in realtime. The developed demultiplexer is implemented as a software module called a filter using DirectShow of Microsoft which is based on COM(Component Object Model)and works on the Windows system. The operation of the demultiplexer is verified by using the GraphEdit tool and rendering a test file formatted as MPEG-2 transport stream.

  • PDF

Conformance Test for MPEG-4 Shape Decoders (MPEG-4 Shape Decoder의 적합성 검사)

  • 황혜전;박인수;박수현;이병욱
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.25 no.6B
    • /
    • pp.1060-1067
    • /
    • 2000
  • MPEG-4 visual coding is an object-based system. The current video coding standards, H.261, MPEG-1, and MPEG-2 encode frame by frame. On the other hand, MPEG-4 separately encodes several objects, such as video objects and audio objects, in the same frame. Each transmitted object is decoded and composed in one frame. Shape coding is a process of coding visual objects in a frame. In this paper we present conformance test method for MPEG-4 shape decoders. This paper reviews the basic shape decoding standard, and proposes conformance test methods for BAB type decoder, and CAE decoder for intra and inter VOPs. Our test generates all possible cases of shape motion vector difference and context.

  • PDF

Implementation of A Multimedia Streaming System using MPEG-4 (MPEG-4 표준을 이용한 멀티미디어 스트리밍 시스템 구현)

  • 임동근;이정우;김선태;마평수;호요성
    • Journal of Broadcast Engineering
    • /
    • v.6 no.3
    • /
    • pp.215-224
    • /
    • 2001
  • In recent days, research activities on multimedia services mainly focus on the multiplexing system with timing synchromization for media components, such as video, audio and text. The MPEG-4 standard emphasizes object-based coding which includes analysis and understanding of the Image content. Since in MPEG-4 we can define objects and encode them independently, we can manipulate and display each object for different applications. This feature of MPEG-4 is also vero useful for multimedia services, such as video streaming cia different network channels, digital versatile disc, internet TV, video E-mail, and so on. In this Paper, we implement a multimedia streaming system which is compliant with the MPEG-4 system and the MP4 file format.

  • PDF

Method of extracting context from media data by using video sharing site

  • Kondoh, Satoshi;Ogawa, Takeshi
    • Proceedings of the Korean Society of Broadcast Engineers Conference
    • /
    • 2009.01a
    • /
    • pp.709-713
    • /
    • 2009
  • Recently, a lot of research that applies data acquired from devices such as cameras and RFIDs to context aware services is being performed in the field on Life-Log and the sensor network. A variety of analytical techniques has been proposed to recognize various information from the raw data because video and audio data include a larger volume of information than other sensor data. However, manually watching a huge amount of media data again has been necessary to create supervised data for the update of a class or the addition of a new class because these techniques generally use supervised learning. Therefore, the problem was that applications were able to use only recognition function based on fixed supervised data in most cases. Then, we proposed a method of acquiring supervised data from a video sharing site where users give comments on any video scene because those sites are remarkably popular and, therefore, many comments are generated. In the first step of this method, words with a high utility value are extracted by filtering the comment about the video. Second, the set of feature data in the time series is calculated by applying functions, which extract various feature data, to media data. Finally, our learning system calculates the correlation coefficient by using the above-mentioned two kinds of data, and the correlation coefficient is stored in the DB of the system. Various other applications contain a recognition function that is used to generate collective intelligence based on Web comments, by applying this correlation coefficient to new media data. In addition, flexible recognition that adjusts to a new object becomes possible by regularly acquiring and learning both media data and comments from a video sharing site while reducing work by manual operation. As a result, recognition of not only the name of the seen object but also indirect information, e.g. the impression or the action toward the object, was enabled.

  • PDF

The development of the WEB-Based Virtual Reality for the Treatment of the Alcoholism (알코올중독자 치료를 위한 WEB 기반 가상현실 제작)

  • Paek, Seung-Eun;Beack, Seung-Hwa;Ryu, Jong-Hyun;Kim, Dong-Wan
    • Proceedings of the KIEE Conference
    • /
    • 2004.07d
    • /
    • pp.2690-2692
    • /
    • 2004
  • Medications or cognitive-behavior methods have been mainly used as a treatment of alcoholism. lately the virtualy technology has been applied to the kink of alcoholic disorders. A virtual environment makes him having ability to over come the drink. In this study, we were implemented by making panorama images and 3D object modules using 3D Studio MAX. VRML, JAVA Applet. And the BAR stimulator that composed with a position sensor head mount display, and audio system, is suggested. To illustrate the physiological difference between a person who has a alcoholism and and without a liquor bottle, heart rate was measured during experiment, and also measured a Person's HR after the virtual reality training. we demonstrated the subjective effectiveness of virtual reality psychotherapy through the clinical experiment.

  • PDF

Object-based Audio Player using a User Information (사용자 정보를 반영한 객체 기반 오디오 재생 기술)

  • Moon, Jae-Won;Jung, Jong-Jin;Kim, Kyung-Won;Lim, Tae-Beom;Lee, Seok-Pil
    • Proceedings of the Korean Information Science Society Conference
    • /
    • 2010.06b
    • /
    • pp.197-200
    • /
    • 2010
  • 멀티미디어 서비스는 신호 처리 기술의 발달 및 전송 환경의 개선으로 정보 전달의 기존 역할 뿐 아니라 사용자의 다양한 요구 및 재생 환경을 반영하는 맞춤형 서비스로 진화하고 있다. 본 논문에서는 사용자의 다양한 청취 환경 변화, 선호도 및 감정을 네트워크상 입력 디바이스를 통해 전송하고, 이를 바탕으로 처리한 객체 기반 음원을 다채널 스피커를 통해 출력하는 능동형 재생 플랫폼을 제안한다. 다수의 청취자는 각각의 감성 및 환경 정보 등 음원 처리에 관련 데이터베이스를 실시간 저장하여 동일한 음원으로 단일 플랫폼에서 다양한 청취감으로 음원 재생이 가능하다.

  • PDF

Comparisons between Distributed Connections and Centralized Connections of Multimedia Streams for Computer-based Audio-Video Teleconferences (컴퓨터 영상회의 시스템을 위한 분산형과 집중형 스트림 연결 구조 비교)

  • Lee, Gyeong-Hui;Kim, Du-Hyeon;Im, Heon-Gyu;Im, Yeong-Hwan
    • The Transactions of the Korea Information Processing Society
    • /
    • v.3 no.3
    • /
    • pp.591-607
    • /
    • 1996
  • To support various multimedia applications. MuX server produces object-oriented and consistent interfaces for creation, copying, splitting, mixing and interleaving of streams. In this paper, we describes distributed connection structures and centralized connection structures which can be used in building a teleconferencing system using basic objects of MuX and compares merits and demerits of each structure from the viewpoint of multimedia related performance like delay and synchronization.

  • PDF