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class="wh-tooltip"><p class="shortdesc">CAN<span class="ph">、CAP</span>、CIR、GPAI、GPIO、I2C、PSADC、PWM 等接口模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d3752e6799" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d3752e6799-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d3752e6799-link">安全</a><div class="wh-tooltip"><p class="shortdesc">SPI ENC、CE、eFuse 等安全模块的介绍和使用说明。</p></div></div></div></li></ul></li></ul></div>
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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1">
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<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://aicdocco/taskstopics/sdk/dvp/dvp_user_guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">DVP 使用指南</h1>
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<div class="date inPage">16 May 2025</div><div style="color: gray;">
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Read time: 1 minute(s)
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</div>
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<div class="- topic/body concept/conbody body conbody">
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<div class="- topic/p p" data-ofbid="d113430e33__20250519091516">Digital Video Port (DVP) 模块是一个负责从 Sensor （传感器）中获取数据，经过格式转换或者缩放后输出到内存 (DRAM) 中的硬件组件。DVP
|
||
模块应用于嵌入式系统和多媒体设备中，用于处理来自摄像头的视频数据。<div class="table-container"><table class="- topic/table table frame-all" id="concept_h4d_fwt_tzb__table_jwg_mmg_d1c" data-ofbid="concept_h4d_fwt_tzb__table_jwg_mmg_d1c" data-cols="3"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">术语定义</span></caption><colgroup><col style="width:16.611295681063122%"/><col style="width:30.564784053156153%"/><col style="width:52.823920265780735%"/></colgroup><thead class="- topic/thead thead">
|
||
<tr class="- topic/row">
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__1"><p class="- topic/p p" data-ofbid="d113430e53__20250519091516">术语</p></th>
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__2"><p class="- topic/p p" data-ofbid="d113430e57__20250519091516">定义</p></th>
|
||
<th class="- topic/entry entry colsep-0 rowsep-1" id="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__3"><p class="- topic/p p" data-ofbid="d113430e61__20250519091516">注释说明</p></th>
|
||
</tr>
|
||
</thead><tbody class="- topic/tbody tbody">
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__1"><p class="- topic/p p" data-ofbid="d113430e71__20250519091516">CMA</p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__2"><p class="- topic/p p" data-ofbid="d113430e75__20250519091516">Contiguous Memory Allocator</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__3"><p class="- topic/p p" data-ofbid="d113430e79__20250519091516">连续内存分配器</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__1"><p class="- topic/p p" data-ofbid="d113430e86__20250519091516">DVP</p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__2"><p class="- topic/p p" data-ofbid="d113430e90__20250519091516">Digital Video Port</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__3"><p class="- topic/p p" data-ofbid="d113430e94__20250519091516">用于接收视频数据数据，转换格式后存放到内存中</p></td>
|
||
</tr>
|
||
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__1"><p class="- topic/p p" data-ofbid="d113430e101__20250519091516">VBI</p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__2"><p class="- topic/p p" data-ofbid="d113430e105__20250519091516">Vertical Blanking Interval</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__3"><p class="- topic/p p" data-ofbid="d113430e109__20250519091516">垂直消隐期</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__1"><p class="- topic/p p" data-ofbid="d113430e116__20250519091516">ISP</p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__2"><p class="- topic/p p" data-ofbid="d113430e120__20250519091516">Image Signal Processing</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__3"><p class="- topic/p p" data-ofbid="d113430e124__20250519091516">图像信号处理，一般指对前端图像传感器输出信号的处理</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__1"><p class="- topic/p p" data-ofbid="d113430e131__20250519091516">MBUS</p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__2"><p class="- topic/p p" data-ofbid="d113430e135__20250519091516">Media Bus</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__3"><p class="- topic/p p" data-ofbid="d113430e139__20250519091516">V4L2 框架中用到的一种媒体类型，用于两个 L2 设备之间的协商</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__1"><p class="- topic/p p" data-ofbid="d113430e147__20250519091516">MPP</p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__2"><p class="- topic/p p" data-ofbid="d113430e151__20250519091516">Media Process Platform</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__3"><p class="- topic/p p" data-ofbid="d113430e155__20250519091516">通用多媒体处理软件平台</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__1"><p class="- topic/p p" data-ofbid="d113430e162__20250519091516">Sensor</p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__2"><p class="- topic/p p" data-ofbid="d113430e166__20250519091516">即 Camera</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__3"><p class="- topic/p p" data-ofbid="d113430e170__20250519091516">本文中指摄像头</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__1"><p class="- topic/p p" data-ofbid="d113430e177__20250519091516">VIN</p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__2"><p class="- topic/p p" data-ofbid="d113430e181__20250519091516">Video Input</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-0" headers="concept_h4d_fwt_tzb__table_jwg_mmg_d1c__entry__3"><p class="- topic/p p" data-ofbid="d113430e185__20250519091516">视频输入（采集）模块</p></td>
|
||
</tr>
|
||
</tbody></table></div></div>
|
||
<section class="- topic/section section" id="concept_h4d_fwt_tzb__id3" data-ofbid="concept_h4d_fwt_tzb__id3"><h2 class="- topic/title title sectiontitle">模块特性</h2>
|
||
|
||
<ul class="- topic/ul ul simple" id="concept_h4d_fwt_tzb__ul_qyb_ydt_2dc" data-ofbid="concept_h4d_fwt_tzb__ul_qyb_ydt_2dc">
|
||
<li class="- topic/li li" data-ofbid="d113430e199__20250519091516">
|
||
<p class="- topic/p p" data-ofbid="d113430e201__20250519091516">最大支持 1080P@30 帧 录像</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d113430e205__20250519091516">
|
||
<p class="- topic/p p" data-ofbid="d113430e207__20250519091516">支持 5M 拍照</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d113430e211__20250519091516">
|
||
<p class="- topic/p p" data-ofbid="d113430e213__20250519091516">支持 YUV422 和 BT.656 两种方式，BT.656 支持隔行模式，最大支持 8 位输入</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d113430e217__20250519091516">
|
||
<p class="- topic/p p" data-ofbid="d113430e219__20250519091516">支持针对图像帧中的行和列分别做裁剪</p>
|
||
</li>
|
||
</ul>
|
||
<p class="- topic/p p" data-ofbid="d113430e224__20250519091516">目前，<span class="- topic/ph ph">Luban-Lite</span> DVP 驱动已支持的 Camera 型号有：</p>
|
||
<ul class="- topic/ul ul simple" id="concept_h4d_fwt_tzb__ul_ryb_ydt_2dc" data-ofbid="concept_h4d_fwt_tzb__ul_ryb_ydt_2dc">
|
||
<li class="- topic/li li" data-ofbid="d113430e232__20250519091516">
|
||
<p class="- topic/p p" data-ofbid="d113430e234__20250519091516">OV2640、OV2659、OV5640、OV7670</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d113430e238__20250519091516">
|
||
<p class="- topic/p p" data-ofbid="d113430e240__20250519091516">TP9950（HD-TVI/CVBS/HD Analog Video Decoder）</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d113430e244__20250519091516">
|
||
<p class="- topic/p p" data-ofbid="d113430e246__20250519091516">GM7150（低功耗 NTSC/PAL 视频解码器）</p>
|
||
</li>
|
||
</ul>
|
||
<p class="- topic/p p" data-ofbid="d113430e251__20250519091516">DVP 的硬件框图：</p>
|
||
<figure class="- topic/fig fig fignone" id="concept_h4d_fwt_tzb__id4" data-ofbid="concept_h4d_fwt_tzb__id4">
|
||
|
||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="concept_h4d_fwt_tzb__image_syb_ydt_2dc" src="../../../images/dvp/dvp_hw_structure.png" alt="dvp_hw_structure"/></div><br/>
|
||
<figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">DVP 硬件架构</span></figcaption></figure>
|
||
</section>
|
||
<section class="- topic/section section" id="concept_h4d_fwt_tzb__section_yht_1ft_2dc" data-ofbid="concept_h4d_fwt_tzb__section_yht_1ft_2dc"><h2 class="- topic/title title sectiontitle">应用场景</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d113430e273__20250519091516">从整个系统看，DVP 有以下应用场景：</p>
|
||
<ol class="- topic/ol ol arabic simple" id="concept_h4d_fwt_tzb__ol_tyb_ydt_2dc" data-ofbid="concept_h4d_fwt_tzb__ol_tyb_ydt_2dc">
|
||
<li class="- topic/li li" data-ofbid="d113430e278__20250519091516">
|
||
<p class="- topic/p p" data-ofbid="d113430e280__20250519091516">从传感器采集数据到内存中，然后让 DE 将其显示到屏幕上。</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d113430e284__20250519091516">
|
||
<p class="- topic/p p" data-ofbid="d113430e286__20250519091516">从传感器采集数据到内存中，使用 CPU 或者 VE 进行编码，最后再将编码后的数据保存到内存中。</p>
|
||
</li>
|
||
</ol>
|
||
<figure class="- topic/fig fig fignone" id="concept_h4d_fwt_tzb__id5" data-ofbid="concept_h4d_fwt_tzb__id5">
|
||
|
||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="concept_h4d_fwt_tzb__image_uyb_ydt_2dc" src="../../../images/dvp/dvp_hw_data_flow.jpg" width="480" alt="dvp_hw_data_flow"/></div><br/>
|
||
<figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 2</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">DVP 应用的数据流</span></figcaption></figure>
|
||
</section>
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</div>
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|
||
<span class="oxy-icon oxy-icon-up"></span>
|
||
</div>
|
||
|
||
<div id="modal_img_large" class="modal">
|
||
<span class="close oxy-icon oxy-icon-remove"></span>
|
||
<div id="modal_img_container"></div>
|
||
<div id="caption"></div>
|
||
</div>
|
||
|
||
|
||
<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
|
||
|
||
|
||
</body>
|
||
</html> |