2007-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/708124摘要：影音多媒體一直是人們相當重要的溝通媒介及娛樂方式。最初，影音以類比的方式擷取、儲存或傳輸。但是隨著數位電路的發展及個人電腦的普及化，造就了影音資料的數位化以及眾多影音資料壓縮標準的產生，例如ISO/IEC的MPEG系列，ITU-T的H.261、H.263，以及兩個組織共同制定的H.264/MPEG-4 AVC。網際網路的流行更將影音資料的傳輸帶到了一個新的境界，許多因應而生的應用，像是隨選視訊、視訊會議、遠距教學等，都為人們生活帶來了更多的便利及娛樂。預計我國在幾年之內將使數位電視廣播系統完全取代傳統的類比電視廣播系統。因此，在未來的數位家庭技術中，數位影音必定會是不可或缺的一部分。 然而，要達到在家裡可以以各種裝置隨時隨地取得數位影音的理想，必將面臨三個挑戰：第一，數位內容的智財權問題。第二，異質性網路的管理。第三，家庭網路內的影音傳輸品質 (QoS) 。本計畫的研究目的在於研究數位家庭閘道器之多媒體訊號處理，以提供品質良好之數位影音訊號傳輸並做到完善的數位權利管理。計劃第一年的里程碑是研究content-aware QoS之信號處理及數位權利管理 (DRM) 系統。第二年將開始研究complexity-aware 影音串流及MHP (Multimedia Home Platform) 上之數位權利管理。最後一年，將做系統整合、效能評估並加入H.264之error-resilient機制，並且將對complexity-aware之視訊編碼器做R-D最佳化。 <br> Abstract: Multimedia has always been a very important means of communication and entertainment for people. At first, multimedia is captured, stored and transmitted in the analog form. But following the prevalence of digital circuits and personal computers, multimedia signals have become digital and many multimedia compression standards have emerged, such as the MPEG series developed by ISO/IEC, the H.261 and H.263 created by ITU-T, and H.264/MPEG-4 AVC developed by both organizations. The popularity of Internet brings multimedia into a new stage. Many applications such as video on demand, video conferencing, remote learning, all bring more convenience and entertainment to people’s lives. It is forecasted that the analog video broadcasting system will be replaced by the digital video broadcasting system in a few years in Taiwan. Therefore, digital multimedia will play an important role in future digital home. To fulfill the dream of accessing digital multimedia contents anywhere in the home, we face three challenges. First, we have to solve the problem of digital rights protection. Second, we have to be able to manage the heterogeneous networks. Third challenge is the maintenance of QoS for digital multimedia transmission. Our plan’s goal is to research on multimedia signal processing for home gateway in order to provide digital multimedia access in the home with excellent quality and complete digital right management. The milestone of the first year is to research on content-aware QoS and digital rights management system. The milestone of the second year is to research on complexity-aware streaming and digital rights management on MHP and mobile devices. The milestone of the final year is to research on the error-resilient video streaming for H.264, R-D optimization for complexity-aware encoder, system integration and performance evaluation.數位權利管理服務品質家庭閘道器DRMQuality of ServiceHome gateway