| 外置式非标准视频同步信号发生器的设计 |
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| 引用本文： | 乔双,宋建中.外置式非标准视频同步信号发生器的设计[J].光电工程,2005,32(10):31-34. |
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| 作者姓名： | 乔双 宋建中 |
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| 作者单位： | 东北师范大学 物理学院,吉林,长春,130024;中国科学院长春光学精密机械与物理研究所,吉林,长春,130033;中国科学院长春光学精密机械与物理研究所,吉林,长春,130033 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用TMS320F206作为USB接口芯片PDIUSBD12的控制器，实现对高速数据采集卡的同步控制。主机从荻得的非标准视频数据中提取同步信号参数，通过USB接口及时传输给DSP，DSP对分频系数实行模糊控制，产生精度可达7ps的视频同步信号，实现非标准视频信号的采集和稳定显示。分别对行频为15．625kHz、场频为50Hz的CCD视频信号，及行频为48．656kHz、场频为60Hz的计算机显示器视频泄漏信号进行了采集与显示，证实了此方案的可行性。
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| 关 键 词： | 信号发生器 视频同步信号 USB DSP |
| 文章编号： | 1003-501X(2005)10-0031-04 |
| 收稿时间： | 2004-12-13 |
| 修稿时间： | 2005-04-15 |
Design of an external generator for generating video synchronous signals |
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| QIAO Shuang,SONG Jian-zhong.Design of an external generator for generating video synchronous signals[J].Opto-Electronic Engineering,2005,32(10):31-34. |
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| Authors: | QIAO Shuang SONG Jian-zhong |
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| Affiliation: | 1. Physics Department, Northeast Normal University, Changchun 130024, China; 2. Changchun Institute of Optics, Fine Mechanics and Physics, the Chinese Academy of Science, Changchun 130033, China |
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| Abstract: | In order to display stochastic video information stably, an external generator for generating video synchronous signals is presented in the paper. Using TMS320F206 as a controller of USB interface chip PDIUSBD12, high data acquisition can be controlled synchronically. From the acquired stochastic video data, PC transfers parameters of synchronous signal to DSP duly through USB interface and DSP processes frequency division coefficients by fuzzy control. As a result, the DSP can generate video synchronous signals with precision 7ps to control the acquisition and display stochastic video signals stably. Successful acquisition and display of stochastic video signals with line-period 15.625kHz and field-frequency 50Hz and the video leaky signals of computer display with line-period 48.656kHz and field-frequency 60Hz respectively demonstrate that this plan is feasible. |
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| Keywords: | USB DSP |
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