用于光纤传输的视频压缩的硬件实现
|
摘要
随着光纤传输的普及和多媒体技术的不断发展,利用光纤实时传输压缩的数字视频信号已经成为远程监控领域一个重要的研究方向。同时,媒体处理器在多媒体技术设计中功能强大,使用方便,可以适应压缩数字视频光纤传输的需要。本文采用一种新的结构的数字光纤传输系统,并且完成了基于多媒体DSP芯片的视频压缩编解码的硬件设计,在光纤中实现了压缩数字视频信号的传输。
TMS320DM642是美国德州仪器(TI)公司推出的最新的一款媒体处理器,它集成了C64x的DSP内核、音视频外设接口以及网络通信I/0模块,为多媒体产品应用提供了理想的解决方案。当工作在720MHz频率的主频下,运算能力达到了5760MIPS,同时满足多种视频标准的编解码任务,可以满足本系统设计要求。具体来讲,本文主要完成了如下工作:
1)根据数字视频传输的特点,设计了数字视频光纤传输系统的总体方案,采用副载波复用技术实现分布式多路压缩视频信号的光纤传输。
2)根据系统总体方案,设计了基于多媒体处理芯片TMS320DM642实现的视频信号MPEG-2编解码。并且根据实验方案,进行了DSP系统总体设计以及外围接口设计、参数的确定以及相关器件的选择。根据DSP系统硬件各个电路的设计原理,探讨了高速PCB设计意义和注意事项,对本系统硬件电路PCB进行了细致的设计实现。
3)在完成系统硬件设计后,利用CCS平台对系统PCB进行软件测试,测试硬件设计是否实现了视频信号的MPEG-2压缩编解码并基本满足了课题的需求。
With the popularization of fiber transmitting technology and the development of multimedia technology, the real-time transmitting of digital encoding video signals with fiber has become an important research field of Long Distance Video Supervisory System. In addition, media processor, which is very powerful and convenient to use in multimedia applications,can satisfied the need of encoding digital video optical fiber transmitting technology. In the paper, a new digital video optical fiber transmission system is adopted here and the hardware implementation is designed for the DSP system to realize the encoding of video which is going to be transmitted in fiber.
TMS320DM642 is a new media processor provided by Texas Instrument Company. Integrated with C64x DSP core, audio and video peripheral interface and network module, it offers ideal solutions for high performance multimedia applications. When working at a clock rate of 720MHz, DM642 can execute 5760 Milionis instructions per second.DM642 can be used to realize compression or decompression algorithm for many video standards.
The methods and experiments in the paper are mainly as follows:
1. According to the character of digital video transmission, firstly a digital video optical fiber system is designed in the paper. The system adopts SCM multiplexing technique to transmit distributed access video signals in optical fiber.
2. In the paper, we can realize the MPEG2 encoder and decoder of video based on media processor TMS320DM642.And then the hardware platform is designed as well as the choice of chips and parameters. According to the hardware design of each part of the whole platform, this paper discusses about the importance of High Speed PCB design and the details provide a reasoned PCB design to the platform.
3. After the design of hardware platform, the code developing environment CCS is used to test whether the platform realize the function of MPEG2 decoder an encoder of video and satisfy the meet of the task.
TMS320DM642是美国德州仪器(TI)公司推出的最新的一款媒体处理器,它集成了C64x的DSP内核、音视频外设接口以及网络通信I/0模块,为多媒体产品应用提供了理想的解决方案。当工作在720MHz频率的主频下,运算能力达到了5760MIPS,同时满足多种视频标准的编解码任务,可以满足本系统设计要求。具体来讲,本文主要完成了如下工作:
1)根据数字视频传输的特点,设计了数字视频光纤传输系统的总体方案,采用副载波复用技术实现分布式多路压缩视频信号的光纤传输。
2)根据系统总体方案,设计了基于多媒体处理芯片TMS320DM642实现的视频信号MPEG-2编解码。并且根据实验方案,进行了DSP系统总体设计以及外围接口设计、参数的确定以及相关器件的选择。根据DSP系统硬件各个电路的设计原理,探讨了高速PCB设计意义和注意事项,对本系统硬件电路PCB进行了细致的设计实现。
3)在完成系统硬件设计后,利用CCS平台对系统PCB进行软件测试,测试硬件设计是否实现了视频信号的MPEG-2压缩编解码并基本满足了课题的需求。
With the popularization of fiber transmitting technology and the development of multimedia technology, the real-time transmitting of digital encoding video signals with fiber has become an important research field of Long Distance Video Supervisory System. In addition, media processor, which is very powerful and convenient to use in multimedia applications,can satisfied the need of encoding digital video optical fiber transmitting technology. In the paper, a new digital video optical fiber transmission system is adopted here and the hardware implementation is designed for the DSP system to realize the encoding of video which is going to be transmitted in fiber.
TMS320DM642 is a new media processor provided by Texas Instrument Company. Integrated with C64x DSP core, audio and video peripheral interface and network module, it offers ideal solutions for high performance multimedia applications. When working at a clock rate of 720MHz, DM642 can execute 5760 Milionis instructions per second.DM642 can be used to realize compression or decompression algorithm for many video standards.
The methods and experiments in the paper are mainly as follows:
1. According to the character of digital video transmission, firstly a digital video optical fiber system is designed in the paper. The system adopts SCM multiplexing technique to transmit distributed access video signals in optical fiber.
2. In the paper, we can realize the MPEG2 encoder and decoder of video based on media processor TMS320DM642.And then the hardware platform is designed as well as the choice of chips and parameters. According to the hardware design of each part of the whole platform, this paper discusses about the importance of High Speed PCB design and the details provide a reasoned PCB design to the platform.
3. After the design of hardware platform, the code developing environment CCS is used to test whether the platform realize the function of MPEG2 decoder an encoder of video and satisfy the meet of the task.
引文
[1]蔡安妮,孙景鳌,多媒体通信技术基础,北京:电子工业出版社,2000,36~98
[2]刘富强,数字视频监控系统开发及应用,北京:机械工业出版社,2003,10~35
[3]Kooren, G., Fourteen video channels over a single optical fiber, Elektronica, v 41, n 18, 24 Sept. 1993, 23~27
[4]张宏科,裘正定,ATM网络互连原理与工程,北京:清华大学出版社, 1997,6~15
[5]黎洪松,数字视频技术及其应用,北京:清华大学出版社,1997,46~69
[6]武斌,夏宇闻,数字视频信号的长线传输,电子技术应用,2003 (1),62~65
[7]孙强,周虚,光纤通信系统及其应用,北京:清华大学出版社,北方交通大学出版社,2004,1~3
[8]侯正信,视频处理与通信,北京:电子工业出版社,2003,10~75
[9]何小海,图像通信,西安:西安电子科技大学出版社,2005,109~175
[10]宋玉娥,邱琪,阳树宗,高速数字光纤传输系统研究,成都:电子科技大学学报,2000, 109~125
[11]DSP在数字视频处理中的应用,http://www.ti.com.cn, 2005
[12]张兴周,孟克,现代光纤通信技术,哈尔滨:哈尔滨工程大学出版社,2003,1~3
[13] Iain E.G.Richardson,开发图象与视频压缩系统(欧阳合,韩军译),长沙:国防科技大学出版社,2005,60~79
[14]戴敏,DPS发展应用纵横谈,中国科技信息,2002, Vol.18:20~22
[15]张雄伟,陈亮,徐光辉等,DSP芯片的原理与开发应用,北京:电子工业出版社,2004,60~93
[16]季显,林俊超,余本喜,DSP嵌入式应用系统开发典型实例,北京:中国电力出版社,2005年,136~158
[17]汤广强,分布接入的视频光纤传输系统:[硕士学位论文],天津:天津大学,2007
[18] Phillips, M.R.,Analog optical fiber transmission systems: A comparison with digital systems, 2004 IEEE LEOS Annual Meeting Conference Proceedings (IEEE Cat. No.04CH37581), Vol.1, 2004, pt. 1, p 171
[19]林如俭,光纤电视传输技术,北京:电子工业出版社,2001,369~424
[20]范寿嗣,叶玉琴,薛道勇等,有线电视模拟-数字光纤与微波传输技术,北京:中国广播电视出版社,2000,100~113
[21]张劲松,陶智勇,韵湘,光波分复用技术,北京:北京邮电大学出版社,2002,1~3
[22]Texas Instruments, TMS320DM642 Technical Overview, Sept.2002
[23]Texas Instruments,TMS320DM642 Video/Imaging Fixed-Point Digital Signal Processor, Data Manual,2004
[24]Texas Instruments,TMS320C6000系列DSP的CPU与外设(卞红雨,纪祥春,乔刚等),清华大学出版社,2007,100~273
[25]TMS320C64x DSP Two-Level Internal Memory Reference Guide[R], Texas Instruments, 2004
[26]TMS320C6000 DSP Cache User's Guide [R], Texas Instruments, 2003
[27]Texas Instrument, TMS320C6000 Peripherals Reference Guide, Feb.2001
[28]Texas Instrument, TMS320C6000 DSP General-Purpose Input/Output (GPIO) Reference Guide, Aug.2001
[29]Texas Instrument,TMS320C6000 DSP Enhanced Direct Memory Access (EDMA) Controller Reference Guide,2004
[30]李方慧,王飞,何佩锟,TMS320C6000系列DSPs原理与应用,北京:电子工业出版社,2003,351~364
[31]Texas Instrument, TMS320C6000 DSP Peripherals Overview Reference Guide, Nov.2003
[32]Texas Instrument Incorporated ,TVP5150AM1 Data Manual[M],2004
[33]刘康,基于DM642的网络多媒体开发平台的设计与实现:[硕士学位论文],天津:天津大学,2005
[34]Philips, Digital Video Encoder SAA7120H/121H Data Manual [M], 2002
[35]Texas Instrument,TMS320C6000 DSP EMIF Reference Guide, Jul.2003
[36]Micron Technology Inc, MT48LC16M8A2 Manual Rev.G [M], 2003
[37]FASL LLC, S29GLxxxM MirrorBitTM Flash Family, 2004
[38]Texas Instrument , TMS320C6000 DSP Power-Down Logic and Modes Reference Guide,2004
[39]Texas Instrument,TMS320C6000 DSP Software-Programmable Phase-Locked Loop (PLL) Controller Reference Guide,2004
[40]Texas Instrument,TMS320DM64x Power Consumption Summary,2004
[41]Texas Instrument,TPS54310 Manual,2007
[42]曾峰,巩海洪,曾波,印刷电路板(PCB)设计与制作(第2版).北京:电子工业出版社,2005,10~175
[43]彭启琮,管庆,DSP集成开发环境:CCS及DSP/BIOS的原理与应用,北京:电子工业出版社,2004,176~273
[44]Texas Instruments Incorporated, TMS320 DSP/BIOS User's Guide, 2001
[45]Texas Instruments Incorporated, Code Composer Studio User's Guide, 2000
[46]TMS320C6000 DSP/BIOS Application Programming Interface (API) Reference Guide, Texas Instruments Incorporated, 2001
[47]杨品,MPEG运动图像压缩编码标准(ISO/IEC 11172),北京:机械工业出版社,1999,1~15
[2]刘富强,数字视频监控系统开发及应用,北京:机械工业出版社,2003,10~35
[3]Kooren, G., Fourteen video channels over a single optical fiber, Elektronica, v 41, n 18, 24 Sept. 1993, 23~27
[4]张宏科,裘正定,ATM网络互连原理与工程,北京:清华大学出版社, 1997,6~15
[5]黎洪松,数字视频技术及其应用,北京:清华大学出版社,1997,46~69
[6]武斌,夏宇闻,数字视频信号的长线传输,电子技术应用,2003 (1),62~65
[7]孙强,周虚,光纤通信系统及其应用,北京:清华大学出版社,北方交通大学出版社,2004,1~3
[8]侯正信,视频处理与通信,北京:电子工业出版社,2003,10~75
[9]何小海,图像通信,西安:西安电子科技大学出版社,2005,109~175
[10]宋玉娥,邱琪,阳树宗,高速数字光纤传输系统研究,成都:电子科技大学学报,2000, 109~125
[11]DSP在数字视频处理中的应用,http://www.ti.com.cn, 2005
[12]张兴周,孟克,现代光纤通信技术,哈尔滨:哈尔滨工程大学出版社,2003,1~3
[13] Iain E.G.Richardson,开发图象与视频压缩系统(欧阳合,韩军译),长沙:国防科技大学出版社,2005,60~79
[14]戴敏,DPS发展应用纵横谈,中国科技信息,2002, Vol.18:20~22
[15]张雄伟,陈亮,徐光辉等,DSP芯片的原理与开发应用,北京:电子工业出版社,2004,60~93
[16]季显,林俊超,余本喜,DSP嵌入式应用系统开发典型实例,北京:中国电力出版社,2005年,136~158
[17]汤广强,分布接入的视频光纤传输系统:[硕士学位论文],天津:天津大学,2007
[18] Phillips, M.R.,Analog optical fiber transmission systems: A comparison with digital systems, 2004 IEEE LEOS Annual Meeting Conference Proceedings (IEEE Cat. No.04CH37581), Vol.1, 2004, pt. 1, p 171
[19]林如俭,光纤电视传输技术,北京:电子工业出版社,2001,369~424
[20]范寿嗣,叶玉琴,薛道勇等,有线电视模拟-数字光纤与微波传输技术,北京:中国广播电视出版社,2000,100~113
[21]张劲松,陶智勇,韵湘,光波分复用技术,北京:北京邮电大学出版社,2002,1~3
[22]Texas Instruments, TMS320DM642 Technical Overview, Sept.2002
[23]Texas Instruments,TMS320DM642 Video/Imaging Fixed-Point Digital Signal Processor, Data Manual,2004
[24]Texas Instruments,TMS320C6000系列DSP的CPU与外设(卞红雨,纪祥春,乔刚等),清华大学出版社,2007,100~273
[25]TMS320C64x DSP Two-Level Internal Memory Reference Guide[R], Texas Instruments, 2004
[26]TMS320C6000 DSP Cache User's Guide [R], Texas Instruments, 2003
[27]Texas Instrument, TMS320C6000 Peripherals Reference Guide, Feb.2001
[28]Texas Instrument, TMS320C6000 DSP General-Purpose Input/Output (GPIO) Reference Guide, Aug.2001
[29]Texas Instrument,TMS320C6000 DSP Enhanced Direct Memory Access (EDMA) Controller Reference Guide,2004
[30]李方慧,王飞,何佩锟,TMS320C6000系列DSPs原理与应用,北京:电子工业出版社,2003,351~364
[31]Texas Instrument, TMS320C6000 DSP Peripherals Overview Reference Guide, Nov.2003
[32]Texas Instrument Incorporated ,TVP5150AM1 Data Manual[M],2004
[33]刘康,基于DM642的网络多媒体开发平台的设计与实现:[硕士学位论文],天津:天津大学,2005
[34]Philips, Digital Video Encoder SAA7120H/121H Data Manual [M], 2002
[35]Texas Instrument,TMS320C6000 DSP EMIF Reference Guide, Jul.2003
[36]Micron Technology Inc, MT48LC16M8A2 Manual Rev.G [M], 2003
[37]FASL LLC, S29GLxxxM MirrorBitTM Flash Family, 2004
[38]Texas Instrument , TMS320C6000 DSP Power-Down Logic and Modes Reference Guide,2004
[39]Texas Instrument,TMS320C6000 DSP Software-Programmable Phase-Locked Loop (PLL) Controller Reference Guide,2004
[40]Texas Instrument,TMS320DM64x Power Consumption Summary,2004
[41]Texas Instrument,TPS54310 Manual,2007
[42]曾峰,巩海洪,曾波,印刷电路板(PCB)设计与制作(第2版).北京:电子工业出版社,2005,10~175
[43]彭启琮,管庆,DSP集成开发环境:CCS及DSP/BIOS的原理与应用,北京:电子工业出版社,2004,176~273
[44]Texas Instruments Incorporated, TMS320 DSP/BIOS User's Guide, 2001
[45]Texas Instruments Incorporated, Code Composer Studio User's Guide, 2000
[46]TMS320C6000 DSP/BIOS Application Programming Interface (API) Reference Guide, Texas Instruments Incorporated, 2001
[47]杨品,MPEG运动图像压缩编码标准(ISO/IEC 11172),北京:机械工业出版社,1999,1~15