综合业务终端视频模块硬件的设计
摘要
随着经济和技术的发展,电信网、广播电视网和计算机通信网将相互渗透,实现“三网合一”并向用户提供综合业务,这将是大势所趋。新型HFC接入网络能克服原来HFC网络漏斗噪声的严重影响,它能够为用户提供包括数字电视、IP电话和数据传输在内的综合业务。综合业务终端就是基于新型HFC接入网向家庭用户提供综合业务的设备,它可以让家庭用户通过一个网络,使用一个设备实现互联网接入、数字电视、IP电话等业务,还可享受视频点播、居家购物、网络游戏、远程教育等丰富的增值业务。本课题的任务就是对综合业务终端音视频模块进行硬件设计。
论文首先介绍了数字视频的特点及传输方法,接着简要介绍了数字电视涉及的DVB-C传输机制和MPEG-2压缩标准。其中MPEG-2是数字电视采用的信源编解码标准,且MPEG-2传输流是本课题中主要接收的数据格式;中国采用的Europe DVB-C协议则是信道传输编解码规范。
论文从功能要求、接口要求和性能要求等方面对综合业务终端进行了需求分析,并在此基础上提出了综合业务终端音视频模块的功能要求、性能指标要求、接口方法等。
论文根据视频模块需求分析及视频数据处理流程提出了综合业务终端视频模块的总体设计方案,其主要包括六个子功能模块:与主控接口模块、音视频解码模块、存储模块、外围接口模块、视频输出模块和电源模块。通过对现有的音视频解码芯片的反复比较,确定了以ST公司的STi5518作为音视频模块MPEG-2解码芯片。
在详细分析了芯片的技术特性之后,论文设计出了综合业务终端音视频模块的所有电路,包括:音视频解码模块的硬件电路、存储器电路、与主控模块的接口电路、音视频输出电路、电源电路、及可用于连接智能卡读卡器或接存储器卡的通用接口电路。
家用综合业务终端的开发是一个比较复杂、工作量巨大的工程,由于时间有限,所设计的音视频模块虽然能实现所要求的功能,但有待进一步优化,以适应市场需要。
With the development of economy and technology, it will be the trend of the times that the telecommunications network,CATV network and computer communication network infiltrate each other,and realize the unity of the three nets to offer integrated services for users. New HFC network can overcome the serious impact of the original one which has funnel noise,and it can provide integrated services to users, including digital TV, IP telephone, data transmission. The integrated services terminal (IST) is a device which is based on the new pattern HFC network and offers integrated services for family users, and it provides family users to realize the Internet access, digital TV and IP phone etc, from a network, and the family users also can enjoy the various value-added services for video on-demand, home shopping, internet games and distance education etc.The task of the subject is the hardware design of the A/V model in integrated services terminal.
The thesis introduces the feature and transmission method of digital video firstly, and then the DVB-C transmission mechanism and MPEG-2 compression standard about digital TV in brief . MPEG-2 is information sources’s decode standard used in digital TV ,and the MPEG-2 transport stream is the main receiving data format in the subject; Europe DVB-C protocol adopted in China is channel transmission decoding standard.
In this thesis, the requirement of IST is analyzed from the aspects of function, interface and performance request. On the basis of it, functional requirements, performance index requirement and interface method of IST’s A/V model is brought forward.
According to video model demand analysis and video data processing, program design of IST’video model is presented including six its major functional models: the main control interface model, audio and video decoding model,memory module,external interface module,video output model and power model. By comparing with the existing audio and video decoding chips, STi5518 is selected as the MPEG-2 decoding chip in A/V model .
After the technical characteristics of the chips are analysised in detail, all the IST’audio and video circuits are designed, including audio and video decoding model hardware circuit,memory circuit,the main control model interface circuit, audio and video output circuit,power circuit and common interface which is used to connect to the smart card reader or memory card.
The development of appliance Integrated Service Terminal is a more complex and huge workload project. As time is limited, it is be further optimized to meet the needs of the market, since audio and video model designed can realize the required functions.
论文首先介绍了数字视频的特点及传输方法,接着简要介绍了数字电视涉及的DVB-C传输机制和MPEG-2压缩标准。其中MPEG-2是数字电视采用的信源编解码标准,且MPEG-2传输流是本课题中主要接收的数据格式;中国采用的Europe DVB-C协议则是信道传输编解码规范。
论文从功能要求、接口要求和性能要求等方面对综合业务终端进行了需求分析,并在此基础上提出了综合业务终端音视频模块的功能要求、性能指标要求、接口方法等。
论文根据视频模块需求分析及视频数据处理流程提出了综合业务终端视频模块的总体设计方案,其主要包括六个子功能模块:与主控接口模块、音视频解码模块、存储模块、外围接口模块、视频输出模块和电源模块。通过对现有的音视频解码芯片的反复比较,确定了以ST公司的STi5518作为音视频模块MPEG-2解码芯片。
在详细分析了芯片的技术特性之后,论文设计出了综合业务终端音视频模块的所有电路,包括:音视频解码模块的硬件电路、存储器电路、与主控模块的接口电路、音视频输出电路、电源电路、及可用于连接智能卡读卡器或接存储器卡的通用接口电路。
家用综合业务终端的开发是一个比较复杂、工作量巨大的工程,由于时间有限,所设计的音视频模块虽然能实现所要求的功能,但有待进一步优化,以适应市场需要。
With the development of economy and technology, it will be the trend of the times that the telecommunications network,CATV network and computer communication network infiltrate each other,and realize the unity of the three nets to offer integrated services for users. New HFC network can overcome the serious impact of the original one which has funnel noise,and it can provide integrated services to users, including digital TV, IP telephone, data transmission. The integrated services terminal (IST) is a device which is based on the new pattern HFC network and offers integrated services for family users, and it provides family users to realize the Internet access, digital TV and IP phone etc, from a network, and the family users also can enjoy the various value-added services for video on-demand, home shopping, internet games and distance education etc.The task of the subject is the hardware design of the A/V model in integrated services terminal.
The thesis introduces the feature and transmission method of digital video firstly, and then the DVB-C transmission mechanism and MPEG-2 compression standard about digital TV in brief . MPEG-2 is information sources’s decode standard used in digital TV ,and the MPEG-2 transport stream is the main receiving data format in the subject; Europe DVB-C protocol adopted in China is channel transmission decoding standard.
In this thesis, the requirement of IST is analyzed from the aspects of function, interface and performance request. On the basis of it, functional requirements, performance index requirement and interface method of IST’s A/V model is brought forward.
According to video model demand analysis and video data processing, program design of IST’video model is presented including six its major functional models: the main control interface model, audio and video decoding model,memory module,external interface module,video output model and power model. By comparing with the existing audio and video decoding chips, STi5518 is selected as the MPEG-2 decoding chip in A/V model .
After the technical characteristics of the chips are analysised in detail, all the IST’audio and video circuits are designed, including audio and video decoding model hardware circuit,memory circuit,the main control model interface circuit, audio and video output circuit,power circuit and common interface which is used to connect to the smart card reader or memory card.
The development of appliance Integrated Service Terminal is a more complex and huge workload project. As time is limited, it is be further optimized to meet the needs of the market, since audio and video model designed can realize the required functions.
引文
[1] 贾靖峰.“三网合一”技术可行性及其社会整合.国际新闻界.2002.(02).47-51.
[2] 金初高.世界数字电视发展前景简介.电视研究.2003.(04).80.
[3] 卢英锁.数字电视技术平台综述.电视技术.2003.(06).59-61.
[4] 陶智勇,周芳等编著,综合宽带接入技术,北京邮电大学出版社,2002
[5] 卢英锁,DVB 技术及其应用.现代电视技术,2004,第 12 期.
[6] 余兆明,余智.数字电视传输与组网,人民邮电出版社,2003.9
[7] 王利国. HFC 网络噪声漏斗效应的一种解决方案. 中国有线电视. 2003-18. 60-62.
[8] John CaTSoulis 著,徐君明,许铁军等译,嵌入式硬件设计,中国电力出版社,2004
[9] 孙志行,宋玉炎等,数字机顶盒技术及其市场前景,电视技术 2002 年第一期
[10] 林建俊,数字电视机顶盒及其在国内的发展,中国有线电视 2003 年第十六期
[11] 聂秀英,流媒体技术的典型应用-IPTV 业务,中国多媒体视讯,2005.6
[12] 徐昊.高中低端机顶盒方案争市场.中国有线电视.2003-6.38-41
[13] MPEG-2 简介. 北京电信科技.1999-04.左永荣.
[14] 金鸿,陈森编著,印制电路技术,化学工业出版社,2003
[15] 苗 雅 玲 . 浅 谈 广 电 有 线 网 络 向 三 网 融 合 方 向 发 展 . 科 技 情 报 开 发 与 经济.2003.13(1).105-106.
[16] 丁莉. 数字视频广播条件接收.北京广播学院学报(自然科学版) .2002.9(04).56-61.
[17] 孙亚楠, 郑南宁等.基于DVB-C的数字机顶盒系统及其软件. 中国有线视.2002.(17):9-12.
[18] ISO/IEC 13818-1.Generic Coding of Moving Pictures and Associated Audio-Part1:Systems.1994.1-132.
[19] CX2415x: Integrated Receiver Decoder Set-top Box Solution . Conexant Company .2000.6
[20] ST Microelectronics.STi5518 Single-Chip Set-top Box Decoder with MP3 and Hard Disk Driver Support.Datasheet.2001.1-301.
[21] MB86H20: SmartMPEG? –MPEG-2 Decoder. For Set-Top Boxes.Fujitsu Microelectonics Pacific Asia LTD
[22] SST39LF/VF040 Datasheet, Silicon Storage Technology,Inc. 2000.
[23] Philips Semiconductors.TDA8004T.IC card interface Dec.30 1999.1-24.
[24] International Standard ISO 7816-1,Identification Cards,Integrated Circuit(s) Cards withContacts,Part 1:Physical Characteristics.1987.
[25] International Standard ISO 7816-2,Identification Cards,Integrated Circuit(s) Cards withContacts,Part 2:Dimensions and Location of the Contacts.1988.
[26] International Standard ISO 7816-3,Identification Cards,Integrated Circuit(s) Cards with Contacts,Part 3:Electronic signals and transmission protocols.1989.
[27] TOSHIBA Corporation, 1S1585-1S1588 Diode Datasheet,2000
[28] Wayne Wolf, Ernest Frey, Tutorial on Embedded System Design, IEEE Computer Design, VLSI in Computers and Processors, 1992
[29] Rekesh Gupta, Hasan Pirkul, Hybrid fiber co-axial CATV network design with variable capacity optical network units, European Journal of Operational Research 123(2000) 73-85
[30] Yun Ling, On current carrying capacities of PCB traces, Electronic Components and Technology Conference, 2002
[31] Song, S., Wu, Z, A broadband integrated services network architecture based on DWDM, Electrical and Computer Engineering, 2001
[32] Lionel J. D’Luna, Loke K. Tan, A Single-Chip Universal Cable Set-Top Box/Modem Transceiver, IEEE Jounal of Solid-State Circuits, November 1999
[33] Coutinho, J.G.F., Luk, W., Optimising and adapting high-level hardware designs, Field-Programmable Technology, 2002
[34] M.Rostami, E.Macedo, Robust Cable Remote Control for Set-Top Boxes, IEEE Melecon, May 2002
[35] Rafi Nave, Yossi TSuria, Advanced Use of TV Set Top Boxes, International Broadcasting Convention, September 1997
[2] 金初高.世界数字电视发展前景简介.电视研究.2003.(04).80.
[3] 卢英锁.数字电视技术平台综述.电视技术.2003.(06).59-61.
[4] 陶智勇,周芳等编著,综合宽带接入技术,北京邮电大学出版社,2002
[5] 卢英锁,DVB 技术及其应用.现代电视技术,2004,第 12 期.
[6] 余兆明,余智.数字电视传输与组网,人民邮电出版社,2003.9
[7] 王利国. HFC 网络噪声漏斗效应的一种解决方案. 中国有线电视. 2003-18. 60-62.
[8] John CaTSoulis 著,徐君明,许铁军等译,嵌入式硬件设计,中国电力出版社,2004
[9] 孙志行,宋玉炎等,数字机顶盒技术及其市场前景,电视技术 2002 年第一期
[10] 林建俊,数字电视机顶盒及其在国内的发展,中国有线电视 2003 年第十六期
[11] 聂秀英,流媒体技术的典型应用-IPTV 业务,中国多媒体视讯,2005.6
[12] 徐昊.高中低端机顶盒方案争市场.中国有线电视.2003-6.38-41
[13] MPEG-2 简介. 北京电信科技.1999-04.左永荣.
[14] 金鸿,陈森编著,印制电路技术,化学工业出版社,2003
[15] 苗 雅 玲 . 浅 谈 广 电 有 线 网 络 向 三 网 融 合 方 向 发 展 . 科 技 情 报 开 发 与 经济.2003.13(1).105-106.
[16] 丁莉. 数字视频广播条件接收.北京广播学院学报(自然科学版) .2002.9(04).56-61.
[17] 孙亚楠, 郑南宁等.基于DVB-C的数字机顶盒系统及其软件. 中国有线视.2002.(17):9-12.
[18] ISO/IEC 13818-1.Generic Coding of Moving Pictures and Associated Audio-Part1:Systems.1994.1-132.
[19] CX2415x: Integrated Receiver Decoder Set-top Box Solution . Conexant Company .2000.6
[20] ST Microelectronics.STi5518 Single-Chip Set-top Box Decoder with MP3 and Hard Disk Driver Support.Datasheet.2001.1-301.
[21] MB86H20: SmartMPEG? –MPEG-2 Decoder. For Set-Top Boxes.Fujitsu Microelectonics Pacific Asia LTD
[22] SST39LF/VF040 Datasheet, Silicon Storage Technology,Inc. 2000.
[23] Philips Semiconductors.TDA8004T.IC card interface Dec.30 1999.1-24.
[24] International Standard ISO 7816-1,Identification Cards,Integrated Circuit(s) Cards withContacts,Part 1:Physical Characteristics.1987.
[25] International Standard ISO 7816-2,Identification Cards,Integrated Circuit(s) Cards withContacts,Part 2:Dimensions and Location of the Contacts.1988.
[26] International Standard ISO 7816-3,Identification Cards,Integrated Circuit(s) Cards with Contacts,Part 3:Electronic signals and transmission protocols.1989.
[27] TOSHIBA Corporation, 1S1585-1S1588 Diode Datasheet,2000
[28] Wayne Wolf, Ernest Frey, Tutorial on Embedded System Design, IEEE Computer Design, VLSI in Computers and Processors, 1992
[29] Rekesh Gupta, Hasan Pirkul, Hybrid fiber co-axial CATV network design with variable capacity optical network units, European Journal of Operational Research 123(2000) 73-85
[30] Yun Ling, On current carrying capacities of PCB traces, Electronic Components and Technology Conference, 2002
[31] Song, S., Wu, Z, A broadband integrated services network architecture based on DWDM, Electrical and Computer Engineering, 2001
[32] Lionel J. D’Luna, Loke K. Tan, A Single-Chip Universal Cable Set-Top Box/Modem Transceiver, IEEE Jounal of Solid-State Circuits, November 1999
[33] Coutinho, J.G.F., Luk, W., Optimising and adapting high-level hardware designs, Field-Programmable Technology, 2002
[34] M.Rostami, E.Macedo, Robust Cable Remote Control for Set-Top Boxes, IEEE Melecon, May 2002
[35] Rafi Nave, Yossi TSuria, Advanced Use of TV Set Top Boxes, International Broadcasting Convention, September 1997