Online Data Processing Methods in Xlet Applications for Seismic Early Warning and Emergency Services on Interactive Digital Television

In this paper, I described the methods that I used for the creation of Xlets, which are Java applets that are developed for the IDTV environment;and the methods for online data retrieval and processing that I utilized in these Xlets. The themes that I chose for the Xlets of the IDTV applications are Earthquake and Tsunami Early Warning;Recent Seismic Activity Report;and Emergency Services. The online data regarding the Recent Seismic Activity Report application are provided by the Kandilli Observatory and Earthquake Research Institute (KOERI) of Bogazici University in Istanbul;while the online data for the Earthquake and Tsunami Early Warning and the Emergency Services applications are provided by the Godoro website which I used for storing (and retrieving by the Xlets) the earthquake and tsunami early warning simulation data, and the DVB network subscriber data (such as name and address information) for utilizing in the Emergency Services (Police, Ambulance and Fire Department) application. I have focused on the methodologies to use digital television as an efficient medium to convey timely and useful information regarding seismic warning data to the public, which forms the main research topic of this paper.

Research and Application of Broad-Storage Architecture in Digital Television System

A new dual-mode transmission networks （DMTN） based on broad-storage architecture for digital television （DTV） is proposed, in which the primary TV network is superimposed by a complementary framework based on broad-storage TV （BSTV）. The necessity of congregating hot TV resources is discussed via analyzing the scale-free properties in DMTN. The self-organized parallel broadcasting technology （SPBT） and the uniform content locator （UCL） are studied to utilize availably transmission channels and to help consumers to communicate with each other expediently. Experimental results show that DMTN can provide not only traditional TV services on schedule, but also digital interactive TV services on demand by using a single channel.

Delivery Digital Television Services over Ethernet

A new architecture for digital television (DTV) delivery based on Ethernet was presented. In this architecture, new protocol stack and packet encapsulation were proposed to help implementation of DTV services over Ethernet link. A simple quality of service (QoS) structure was provided in traffic control of nodes to achieve QoS requirements of DTV delivery. Experiments were proceeded successfully to implement the idea. Finally, a short evaluation to QoS provisions was given, achieving good results.

Low Noise Amplifier Design for Digital Television Applications

The DVB-T (Digital Video Broadcasting—Terrestrial) standard is being deployed in many parts of the world for digital broadcasting services, providing a variety of features extending the capabilities of the older analog ones. In this paper, a two-stage low noise amplifier (LNA) is designed for use with the DVB-T standard. The design is employed based on microstrip. The microwave design meets all the specifications required, achieving input and output return loss below ?10 dB, high gain of 35 dB and high linearity. Low noise figure of 1.3 dB is achieved with the use of pHEMT transistor technology.

Digital television transmission based on asynchronous transfer mode

This paper introduces a method to realize digital television transmission based on asynchronous transfer mode (ATM), a technology based on fast packet switching. Choosing the integral multiple length of an ATM cell payload to equal to the length of an MPEG transport stream packet, an MPEG transport stream packet can be inextenso loaded by several ATM cells and trans-formed into ATM cells. Using ATM virtual connection technology and B-ISDN, the interoperability between ATM and DTV may be realized, and DTV signal transmission may also be realized finally.

Healthcare Application:An Analysis of Reception Studies in Interactive Digital Television

This paper presents a healthcare application for Brazilian digital television,its main purposes and its reception tests with end users.This is an applied research for testing the scope of the Global ITV project funded by the Brazilian National Council for Scientific and Technological Development(CNPq)and the European community which has developed a hybrid broadband and broadcasting platform.

HIGH-EFFICIENCY CODING FOR PAL COLOR TELEVISION SIGNAL

Proceeding from the specific characteristics of PAL television signals adopted in China this paper points out that if the fs = 2fsc of sub-Nyquist sampling and DPCM encoding is used for PAL complete signal and if the blanking time is utilized to transmit code of effective area, it is possible to transmit a color TV signal over PCM three-group channel.

Advanced Digital Techniques and Tendencies in the Development of Modem Digital Satellite Broadcasting

The fundamental aspects of digital broadcasting are its service flexibility and power savings, which make all-digital satellite broadcasting a viable and economic propositon compared with analog broadcasting. Tendencies in the development of digital television broadcasting are: (1) Stereophonic or two-language sound transmission with television in existing analog TV system, (2) Digital direct satellite broadcasting (D-DBS); (3)Digital high definition television (HDTV) Broadcasting.

Positioning models and systems based on digital television broadcasting signals

The requirement and feasibility of the positioning system using digital television(DTV)broadcasting signals are analyzed.The principle of DTV positioning on the basis of frame synchronization is brought forward and the ranging characteristic is studied that the observables are asynchronously measured during the same epoch interval.The models of the pseudo-range observation and Doppler carrier phase integral are researched.The system observation and state equations are presented on the basis of the above models.The simulation results showed that DTV positioning technology could remarkably improve the precision of system state estimates using smoothing methods for positioning systems or integrated navigation systems.The DTV positioning that has a sub-meter level ranging error and meter level positioning accuracy can parallel with and even taken as a beneficial substitute for the tradition positioning technology.

数字化与工业化背景下浙江影视产业的机遇与挑战

浙江在历史上一直是中国电影的重镇,其影视产业有着深厚的历史底蕴。在影视产业化改革的推动下,浙江根据自身发展的特点,提升影视产业的整合性和集中度,积极探索影视产业工业化转型之路,提高生产效率,实现规模经济,取得了积极成效。在数智化背景下,生成式人工智能对影视生产的创意、策划、制作环节以及美学观念都将产生重要影响。浙江的影视产业在数字资产、大模型、算法等方面都已开始布局,未来将继续保持科技之翼与文学之翼同频共振,进一步整合数字技术与传统影视制作工艺,推动科技与内容的深度融合,通过优化资源配置和提高生产效率,实现高质量发展。

数字时代下影视动画艺术设计创新研究

目前人们精神文明标准逐渐提升,传统的影视艺术、动画艺术等作品渐渐不再能满足社会的要求。因此,需要对数字时代下的影视动画艺术进行设计创新。首先通过绘制动画基础线条、塑造VR模式下的人物形象、确定三维动画主题色彩、创建分镜头式的动画视觉场景、实现三维融合的数字影视艺术动画,对数字化的影视动画艺术进行创新设计。通过测试对影视动画技术的创新设计进行效果验证,以此推动影视动画以及相关行业的创新发展。实验结果表明,数字时代下影视动画艺术设计创新具有更好的处理效果,可以使画面更加清晰立体,为观众呈现出更具美感的动画作品。

基于5G的有线电视网络数字通信方案设计

随着第五代移动通信技术(5th-Generation Mobile Communication Technology,5G)的迅猛发展,有线电视网络数字通信技术逐渐受到业界的广泛关注。文章深入探索并设计一种基于5G的有线电视网络数字通信方案,介绍系统中5G基站的建设、有线电视网络的视频传输服务、5G网络信号优化策略。同时,开展实验验证设计方案的应用效果,结果表明基于5G的有线电视网络数字通信方案可以大幅度提升有线电视网络的通信速度和准确性。

地面数字电视发射系统优化

中央广播电视节目无线数字化覆盖工程施工完成后,地面数字电视发射系统需要持续实施综合优化,主要包括供配电系统、节目传送系统、发射系统和自动化系统等。本文总结了多年系统优化的工作经验,给广电同行提供借鉴。

国际中文教育“影视+国情教育”课程教学创新研究

调研来华留学生国情教育课程现状,分析其课程设置与教学模式的问题,提出国情教育融合影视的创新课程。“影视+国情教育”课程融合了影视艺术和国情教育理念,为提升国情教育质量提供了实用性的创新思路。创新课程的研究不仅能提升国情教育的教学效果,还为国情教育课程创新提供了有效建议。基于布鲁姆认知分类学理论,通过遴选当代优秀影视作品,搭建数字影视资源库,利用虚拟现实(VR)和增强现实(AR)技术,利用新媒体平台搭建学习社群,旨在构建具有时代性、共情性、多元性的“影视+国情教育”创新课程,实现国情教育和新时代同频共振,构建多元互动的课程大纲,提升国情教育的有效输入,激发学生对中国故事的创造性表达,助力传播中国好声音。

广播电视SDH数字微波传输系统常见故障解析与处置

广播电视同步数字体系(Synchronous Digital Hierarchy,SDH)数字微波传输系统在远距离、大容量传输等方面有着天然的技术优势,但由于传输过程中需要完成适配、复用和中继等信号处理步骤,导致系统运行时极易出现故障现象。因此,围绕SDH数字微波传输系统的设备组成、工作原理及功能模块展开深入研究,分析论证系统运行中常见的故障,解析故障原因并给出处置策略,以期为技术人员提供参考,提升广播电视SDH数字微波传输系统的稳定性和可靠性。

地面数字电视运行监测技术应用

随着信息技术的快速发展,地面数字电视作为一种新型的电视传输方式,因其高质量的图像和声音以及广泛的覆盖范围得到广泛应用。介绍地面数字电视的内涵,分析对其运行监测的必要性,提出技术应用的原则,并探讨了具体的应用方法,以期为地面数字电视的运行监测提供理论支持和实践指导,促进地面数字电视的服务质量和用户体验的提升。

数字时代广播电视无线发射技术的创新与发展

广播电视行业正经历前所未有的变革,无线发射技术作为广播电视传输的关键环节,其创新与发展尤为重要。探索数字时代广播电视无线发射技术的创新路径,成为行业发展的迫切需求。基于此,首先分析数字时代广播电视无线发射技术的演变历程,其次探讨数字时代广播电视无线发射技术的现状与挑战,最后分析数字时代广播电视无线发射技术的优化路径。

数字音频压缩在广播电视传输中的效能分析

通过对比分析脉冲编码调制(Pulse Code Modulation,PCM)音频文件和使用HE-AAC压缩后的音频文件,结果显示HE-AAC压缩技术在数据量减少、兼容性提升以及网络延迟降低等方面均表现出显著的优势。HE-AAC压缩技术在广播电视传输中具有较好的应用前景,能够提高传输效率,为观众提供更丰富的音频选择。