{"id":3367,"date":"2025-08-06T19:28:12","date_gmt":"2025-08-06T11:28:12","guid":{"rendered":"http:\/\/www.51cos.com\/?p=3367"},"modified":"2025-08-06T19:28:12","modified_gmt":"2025-08-06T11:28:12","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e8%af%b4dji%e5%a4%a7%e7%96%86o3%e3%80%81o4%e6%89%80%e8%b0%9315ms%e8%b6%85%e4%bd%8e%e5%bb%b6%e6%97%b6%e6%98%af%e5%bf%bd%e6%82%a0%e4%ba%ba%e3%80%81%e8%bf%9d%e5%8f%8d%e6%8a%80","status":"publish","type":"post","link":"http:\/\/www.51cos.com\/?p=3367","title":{"rendered":"\u4e3a\u4ec0\u4e48\u8bf4DJI\u5927\u7586O3\u3001O4\u6240\u8c1315ms\u8d85\u4f4e\u5ef6\u65f6\u662f\u5ffd\u60a0\u4eba\u3001\u8fdd\u53cd\u6280\u672f\u5b9a\u5f8b\u7684\u9500\u552e\u5671\u5934\uff1f"},"content":{"rendered":"<h2>\u5982\u679c\u5bf9\u201c\u5ef6\u65f6\u201d\u7684\u5b9a\u4e49\u7406\u89e3\u9519\u8bef\uff0c\u6574\u4e2a\u7814\u53d1\u65b9\u5411\u90fd\u4f1a\u8d70\u504f\u3002<\/h2>\n<h3>\u6838\u5fc3\u8bba\u636e\uff1aGlass-to-Glass \u5ef6\u65f6\u5728\u6280\u672f\u4e0a\u65e0\u6cd5\u505a\u5230 15ms<\/h3>\n<p>\u8981\u8bc1\u660e\u8fd9\u4e00\u70b9\uff0c\u6211\u4eec\u53ea\u9700\u5c06\u5b8c\u6574\u7684\u89c6\u9891\u94fe\u8def\uff08\u4ece\u6444\u50cf\u5934\u73bb\u7483\u5230\u663e\u793a\u5668\u73bb\u7483\uff09\u5206\u89e3\uff0c\u5e76\u4e3a\u6bcf\u4e2a\u73af\u8282\u4f30\u7b97\u4e00\u4e2a<strong>\u6781\u5176\u4e50\u89c2<\/strong>\u7684\u6700\u4f4e\u5ef6\u65f6\u3002<\/p>\n<p>\u5b8c\u6574\u7684 Glass-to-Glass (G2G) \u5ef6\u65f6 = <strong>T1 + T2 + T3 + T4 + T5<\/strong><\/p>\n<h4>T1: \u6444\u50cf\u5934\u91c7\u96c6\u4e0e ISP \u5904\u7406 (Camera Sensor + Image Signal Processor)<\/h4>\n<ul>\n<li><strong>\u4f20\u611f\u5668\u66dd\u5149\u4e0e\u8bfb\u51fa (Sensor Readout)<\/strong>: \u6444\u50cf\u5934CMOS\u4f20\u611f\u5668\u662f\u9010\u884c\u8bfb\u53d6\u50cf\u7d20\u7684\u3002\u8bfb\u53d6\u4e00\u5e27 1080p (1920&#215;1080) \u7684\u753b\u9762\u9700\u8981\u65f6\u95f4\u3002\u5728 100fps \u7684\u5e27\u7387\u4e0b\uff0c\u6bcf\u5e27\u7684\u6301\u7eed\u65f6\u95f4\u662f <code>1 \/ 100s = 10ms<\/code>\u3002\u4f20\u611f\u5668\u8bfb\u51fa\u6574\u4e2a\u753b\u9762\u7684\u65f6\u95f4\u63a5\u8fd1\u8fd9\u4e2a\u503c\u3002\u6211\u4eec\u5047\u8bbe\u4e00\u4e2a\u6781\u5176\u4f18\u79c0\u7684\u5168\u5c40\u5feb\u95e8\uff08Global Shutter\uff09\u4f20\u611f\u5668\uff0c\u5e76\u5c06\u6b64\u5ef6\u65f6\u4e50\u89c2\u5730\u4f30\u8ba1\u4e3a <strong>~5ms<\/strong>\u3002<\/li>\n<li><strong>ISP \u5904\u7406 (Image Signal Processing)<\/strong>: \u4f20\u611f\u5668\u8f93\u51fa\u7684\u662f\u539f\u59cb\u7684 Bayer \u6570\u636e\uff0c\u9700\u8981\u7ecf\u8fc7 ISP \u8fdb\u884c\u53bb\u9a6c\u8d5b\u514b\u3001\u767d\u5e73\u8861\u3001\u964d\u566a\u3001\u9510\u5316\u7b49\u4e00\u7cfb\u5217\u5904\u7406\uff0c\u624d\u80fd\u53d8\u6210\u53ef\u4f9b\u7f16\u7801\u5668\u4f7f\u7528\u7684 YUV \u683c\u5f0f\u3002\u5373\u4f7f\u662f\u6700\u9ad8\u6548\u7684\u786c\u4ef6 ISP\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u4e5f\u9700\u8981\u65f6\u95f4\u3002\u4e00\u4e2a\u975e\u5e38\u6fc0\u8fdb\u7684\u4f30\u8ba1\u662f <strong>~5ms<\/strong>\u3002<\/li>\n<\/ul>\n<blockquote><p>\n  <strong>T1 \u5c0f\u8ba1 (\u4e50\u89c2\u503c): 5ms + 5ms = 10ms<\/strong>\n<\/p><\/blockquote>\n<hr \/>\n<h4>T2: \u89c6\u9891\u7f16\u7801 (H.265 Encoding)<\/h4>\n<ul>\n<li>\u8fd9\u662f\u5c06 YUV \u56fe\u50cf\u6570\u636e\u538b\u7f29\u6210 H.265 \u7801\u6d41\u7684\u8fc7\u7a0b\u3002\u4e3a\u4e86\u5b9e\u73b0\u8d85\u4f4e\u5ef6\u65f6\uff0c\u7f16\u7801\u5668\u5fc5\u987b\u88ab\u914d\u7f6e\u4e3a\u201c\u96f6\u5ef6\u8fdf\u201d\u6a21\u5f0f\uff1a\n<ul>\n<li>\u7981\u7528 B \u5e27\uff08B-frames\uff09\uff0c\u56e0\u4e3a\u5b83\u9700\u8981\u53c2\u8003\u672a\u6765\u5e27\uff0c\u4f1a\u5f15\u5165\u81f3\u5c11\u4e00\u5e27\u7684\u5ef6\u65f6\u3002<\/li>\n<li>\u7981\u7528\u6216\u6781\u5927\u7f29\u77ed GOP\uff08Group of Pictures\uff09\uff0c\u57fa\u672c\u53ea\u7528 I \u5e27\u548c P \u5e27\u3002<\/li>\n<li>\u91c7\u7528 Slice-based\uff08\u5206\u7247\uff09\u7f16\u7801\uff0c\u5373\u7f16\u7801\u5b8c\u753b\u9762\u7684\u4e00\u90e8\u5206\u5c31\u7acb\u523b\u53d1\u9001\uff0c\u800c\u4e0d\u662f\u7b49\u6574\u5e27\u7f16\u7801\u5b8c\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5373\u4f7f\u5728\u5982\u6b64\u4f18\u5316\u7684\u8bbe\u7f6e\u4e0b\uff0c\u4e00\u4e2a\u5f3a\u5927\u7684\u786c\u4ef6\u7f16\u7801\u5668\uff08\u5982 RK3588 \u7684 VPU\uff09\u5b8c\u6210 1080p \u5206\u8fa8\u7387\u7684\u7f16\u7801\uff0c\u5ef6\u65f6\u4e5f\u5f88\u96be\u4f4e\u4e8e 5ms\u3002\u4e00\u4e2a\u66f4\u73b0\u5b9e\u7684<strong>\u8d85\u4f4e\u5ef6\u65f6<\/strong>\u76ee\u6807\u662f <strong>10ms \u5de6\u53f3<\/strong>\u3002<\/li>\n<\/ul>\n<blockquote><p>\n  <strong>T2 \u5c0f\u8ba1 (\u4e50\u89c2\u503c): ~10ms<\/strong>\n<\/p><\/blockquote>\n<hr \/>\n<h4>T3: \u65e0\u7ebf\u4f20\u8f93 (Transmission)<\/h4>\n<ul>\n<li>\u8fd9\u5305\u62ec\u5c06 H.265 \u7801\u6d41\u6253\u5305\u3001\u52a0\u5165 FEC\uff08\u524d\u5411\u7ea0\u9519\uff09\u3001\u4ea4\u7531 Wi-Fi \u82af\u7247\u53d1\u9001\u3001\u7a7a\u4e2d\u98de\u884c\u3001\u88ab\u5730\u9762\u7ad9\u63a5\u6536\u5e76\u89e3\u5305\u3002<\/li>\n<li>\u8fd9\u662f\u201c\u56fe\u4f20\u94fe\u8def\u5ef6\u65f6\u201d\u7684\u6838\u5fc3\u90e8\u5206\u3002\u5927\u7586\u7b49\u5382\u5546\u901a\u8fc7\u6df1\u5ea6\u5b9a\u5236\u7269\u7406\u5c42\u548c MAC \u5c42\uff0c\u53ef\u4ee5\u5c06\u8fd9\u4e2a\u73af\u8282\u7684\u5ef6\u65f6\u63a7\u5236\u5f97\u6781\u4f4e\u3002<\/li>\n<li>\u4e00\u4e2a<strong>\u4e16\u754c\u7ea7\u7684\u76ee\u6807<\/strong>\u5c31\u662f\u5c06\u8fd9\u4e2a\u5ef6\u65f6\uff08\u4ece\u7f16\u7801\u5668\u8f93\u51fa\u7b2c\u4e00\u4e2a\u6bd4\u7279\uff0c\u5230\u89e3\u7801\u5668\u63a5\u6536\u5230\u7b2c\u4e00\u4e2a\u6bd4\u7279\uff09\u63a7\u5236\u5728 <strong>5ms &#8211; 15ms<\/strong> \u4e4b\u95f4\u3002<\/li>\n<\/ul>\n<blockquote><p>\n  <strong>T3 \u5c0f\u8ba1 (\u76ee\u6807\u503c): ~15ms (\u6211\u4eec\u91c7\u7528\u4f60\u63d0\u51fa\u7684\u89c4\u683c\u4f5c\u4e3a\u6b64\u73af\u8282\u7684\u76ee\u6807)<\/strong>\n<\/p><\/blockquote>\n<hr \/>\n<h4>T4: \u89c6\u9891\u89e3\u7801 (H.265 Decoding)<\/h4>\n<ul>\n<li>\u5730\u9762\u7ad9\u6536\u5230\u7801\u6d41\u540e\uff0c\u9700\u8981\u786c\u4ef6\u89e3\u7801\u5668\u5c06\u5176\u8fd8\u539f\u4e3a YUV \u56fe\u50cf\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4e0e\u7f16\u7801\u7c7b\u4f3c\uff0c\u540c\u6837\u9700\u8981\u65f6\u95f4\u3002\u4f4e\u5ef6\u8fdf\u89e3\u7801\u5668\u4e5f\u9700\u8981 <strong>~10ms<\/strong> \u5de6\u53f3\u3002<\/li>\n<\/ul>\n<blockquote><p>\n  <strong>T4 \u5c0f\u8ba1 (\u4e50\u89c2\u503c): ~10ms<\/strong>\n<\/p><\/blockquote>\n<hr \/>\n<h4>T5: \u6e32\u67d3\u4e0e\u663e\u793a (Rendering &amp; Display)<\/h4>\n<ul>\n<li>\u89e3\u7801\u540e\u7684 YUV \u56fe\u50cf\u9700\u8981\u88ab\u6e32\u67d3\u5230\u5c4f\u5e55\u4e0a\u3002<\/li>\n<li><strong>\u6e32\u67d3\/\u5408\u6210 (Rendering\/Compositing)<\/strong>: \u64cd\u4f5c\u7cfb\u7edf\u9700\u8981\u5c06\u56fe\u50cf\u6570\u636e\u9001\u5230\u663e\u5b58\uff0c\u5e76\u7531\u663e\u793a\u5f15\u64ce\u6e32\u67d3\u3002\u5373\u4f7f\u662f\u76f4\u63a5\u6e32\u67d3\u5230 Framebuffer\uff08\u7ed5\u8fc7\u684c\u9762\u7a97\u53e3\u7ba1\u7406\u5668\uff09\uff0c\u4e5f\u5b58\u5728\u51e0\u6beb\u79d2\u7684 OS \u5f00\u9500\u3002\u6211\u4eec\u4e50\u89c2\u4f30\u8ba1\u4e3a <strong>~2ms<\/strong>\u3002<\/li>\n<li><strong>\u663e\u793a\u5668\u5237\u65b0 (Display Refresh)<\/strong>: \u8fd9\u662f\u6700\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u5ef6\u65f6\u3002\u4e00\u4e2a 60Hz \u7684\u663e\u793a\u5668\uff0c\u6bcf 16.7ms \u5237\u65b0\u4e00\u6b21\u3002\u4f60\u89e3\u7801\u5b8c\u6210\u7684\u5e27\u5fc5\u987b\u7b49\u5f85\u4e0b\u4e00\u4e2a\u5782\u76f4\u540c\u6b65\u4fe1\u53f7\u624d\u80fd\u88ab\u663e\u793a\u3002\u5e73\u5747\u6765\u8bf4\uff0c\u8fd9\u4f1a\u5f15\u5165\u534a\u4e2a\u5237\u65b0\u5468\u671f\u7684\u5ef6\u65f6\uff0c\u5373 <code>16.7ms \/ 2 = 8.3ms<\/code>\u3002\u5373\u4f7f\u662f 120Hz \u7684\u5c4f\u5e55\uff0c\u4e5f\u9700\u8981 <code>8.3ms \/ 2 = 4.15ms<\/code> \u7684\u5e73\u5747\u5ef6\u65f6\u3002<\/li>\n<\/ul>\n<blockquote><p>\n  <strong>T5 \u5c0f\u8ba1 (\u4e50\u89c2\u503c\uff0c\u6309 60Hz \u7b97): 2ms + 8.3ms = ~10ms<\/strong>\n<\/p><\/blockquote>\n<hr \/>\n<h3>\u7ed3\u8bba\u4e0e\u8bc1\u636e<\/h3>\n<p><strong>\u5c06\u6240\u6709\u73af\u8282\u7684\u4e50\u89c2\u503c\u76f8\u52a0\uff1a<\/strong><\/p>\n<p><strong>\u6700\u4f4e G2G \u5ef6\u65f6 (\u7406\u8bba\u4e50\u89c2\u503c) = T1(10ms) + T2(10ms) + T3(15ms) + T4(10ms) + T5(10ms) = 55ms<\/strong><\/p>\n<p><strong>\u5373\u4f7f\u6211\u4eec\u628a T3 (\u4f20\u8f93) \u538b\u7f29\u5230\u6781\u81f4\u7684 5ms\uff1a<\/strong><\/p>\n<p><strong>\u6700\u4f4e G2G \u5ef6\u65f6 (\u6781\u9650\u4e50\u89c2\u503c) = 10ms + 10ms + 5ms + 10ms + 10ms = 45ms<\/strong><\/p>\n<p><strong>\u8bc1\u636e\uff1a<\/strong><\/p>\n<ol>\n<li><strong>\u6280\u672f\u53ef\u884c\u6027\u5206\u6790<\/strong>\uff1a\u5982\u4e0a\u6240\u793a\uff0c\u4ece\u7269\u7406\u548c\u5904\u7406\u6d41\u7a0b\u4e0a\uff0c15ms \u7684 Glass-to-Glass \u5ef6\u65f6\u5bf9\u4e8e\u4e00\u5957 H.265 \u7f16\u89e3\u7801\u7cfb\u7edf\u662f<strong>\u4e0d\u53ef\u80fd\u5b9e\u73b0<\/strong>\u7684\u3002\u4ec5\u4ec5\u662f\u6444\u50cf\u5934\u91c7\u96c6+ISP+\u7f16\u7801\u8fd9\u524d\u534a\u6bb5\uff0c\u5c31\u5df2\u7ecf\u8d85\u8fc7\u4e86 15ms\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u884c\u4e1a\u7ade\u4e89\u5bf9\u624b\u6570\u636e\u4f50\u8bc1<\/strong>\uff1a<\/p>\n<ul>\n<li><strong>HDZero<\/strong>\uff1a\u8fd9\u662f FPV \u9886\u57df\u4ee5\u8d85\u4f4e\u5ef6\u8fdf\u8457\u79f0\u7684\u6570\u5b57\u56fe\u4f20\u7cfb\u7edf\u3002\u5b83\u4e3a\u4e86\u5b9e\u73b0\u4f4e\u5ef6\u8fdf\uff0c<strong>\u653e\u5f03\u4e86 H.265\/H.264 \u538b\u7f29<\/strong>\uff0c\u91c7\u7528\u4e86\u4e00\u79cd\u66f4\u7b80\u5355\u3001\u538b\u7f29\u7387\u66f4\u4f4e\u7684\u65b9\u6848\u3002\u5373\u4fbf\u5982\u6b64\uff0c\u5176\u5b98\u65b9\u5ba3\u4f20\u7684 G2G \u5ef6\u65f6\u4e5f\u662f <strong>\u56fa\u5b9a\u5728 22ms \u5de6\u53f3<\/strong>\u3002\u4e00\u4e2a\u7f16\u89e3\u7801\u66f4\u590d\u6742\u7684 H.265 \u7cfb\u7edf\uff0c\u5ef6\u65f6\u4e0d\u53ef\u80fd\u6bd4\u5b83\u66f4\u4f4e\u3002<\/li>\n<li><strong>DJI FPV System (OcuSync 3.0)<\/strong>\uff1a\u5728 FPV \u5708\u6709\u5927\u91cf\u4f7f\u7528\u9ad8\u901f\u6444\u50cf\u673a\u8fdb\u884c\u7684\u72ec\u7acb\u7b2c\u4e09\u65b9\u8bc4\u6d4b\u3002\u8bc4\u6d4b\u7ed3\u679c\u663e\u793a\uff0c\u5728\u4f4e\u5ef6\u8fdf\u4f18\u5148\u6a21\u5f0f\u4e0b\uff081080p\/100fps\uff09\uff0c\u5176<strong>\u771f\u5b9e G2G \u5ef6\u65f6\u5728 25ms &#8211; 35ms \u4e4b\u95f4<\/strong>\u3002\u8fd9\u4e2a\u6570\u636e\u975e\u5e38\u4f18\u79c0\uff0c\u4f46\u8fdc\u9ad8\u4e8e 15ms\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u5382\u5546\u5ba3\u4f20\u672f\u8bed\u7684\u89e3\u8bfb<\/strong>\uff1a\u5f53\u5382\u5546\u5ba3\u4f20\u4e00\u4e2a\u6781\u4f4e\u7684\u3001\u770b\u4f3c\u4e0d\u53ef\u80fd\u7684\u5ef6\u65f6\u6570\u5b57\u65f6\uff0c\u901a\u5e38\u6307\u7684\u662f\u6574\u4e2a\u94fe\u8def\u4e2d<strong>\u6700\u5feb\u3001\u6700\u6838\u5fc3<\/strong>\u7684\u90a3\u4e2a\u73af\u8282\u7684\u5ef6\u65f6\uff0c\u4e5f\u5c31\u662f\u201c\u4f20\u8f93\u5ef6\u65f6\u201d\u6216\u201c\u94fe\u8def\u5ef6\u65f6\u201d\u3002\u4ed6\u4eec\u4f1a\u7528 &#8220;Transmission Latency as low as&#8230;&#8221; \u6216\u4e2d\u6587\u7684\u201c\u56fe\u4f20\u5ef6\u65f6\u4f4e\u81f3&#8230;\u201d\u8fd9\u6837\u7684\u5b57\u773c\u3002\u800c G2G \u5ef6\u65f6\uff0c\u4ed6\u4eec\u4f1a\u7528 &#8220;End-to-End Latency&#8221; \u6216\u201c\u7aef\u5230\u7aef\u5ef6\u65f6\u201d\u6765\u63cf\u8ff0\uff0c\u5e76\u4e14\u7ed9\u51fa\u4e00\u4e2a\u66f4\u73b0\u5b9e\u7684\u6570\u5b57\uff08\u5982 30ms\uff09\u3002<\/p>\n<\/li>\n<\/ol>\n<blockquote>\n<p>\u628a\u8fd9\u4e2a\u73af\u8282\u4f5c\u4e3a 15ms \u7684\u76ee\u6807\uff0c\u867d\u7136\u6781\u5177\u6311\u6218\uff0c\u4f46\u81f3\u5c11\u5728\u6280\u672f\u4e0a\u4fdd\u7559\u4e86\u4e00\u4e1d\u53ef\u80fd\u6027\u3002\u800c\u5c06 G2G \u4f5c\u4e3a 15ms \u7684\u76ee\u6807\uff0c\u5219\u662f\u4ece\u4e00\u5f00\u59cb\u5c31\u8fdd\u80cc\u4e86\u7269\u7406\u548c\u6280\u672f\u89c4\u5f8b\u3002\n<\/p><\/blockquote>\n<p>\u201c<strong>\u5927\u7586\u5b98\u65b9\u56de\u590d\u8bf415\u6beb\u79d2\u6700\u4f4e\u5ef6\u65f6\u662f\u7528\u98de\u884c\u773c\u955c3\u5728\u7ade\u901f\u6a21\u5f0f\u4e0b\u53d6\u5f97\u7684\u6570\u636e\u3002<\/strong>\u201d \u5b83\u6ca1\u6709\u63a8\u7ffb\u4e4b\u524d\u7684\u8bba\u8bc1\uff0c\u53cd\u800c<strong>\u5370\u8bc1\u4e86\u6838\u5fc3\u89c2\u70b9<\/strong>\uff0c\u8ba9\u6211\u4eec\u80fd\u66f4\u7cbe\u786e\u5730\u5256\u6790\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u8bc1\u636e\u5206\u4e3a\u4e24\u90e8\u5206\uff1a<br \/>\n1.  <strong>\u6280\u672f\u89e3\u6784<\/strong>\uff1a\u5206\u6790\u201c\u7ade\u901f\u6a21\u5f0f (Racing Mode)\u201d\u4e3a\u4e86\u8fbe\u523015ms\uff0c\u5fc5\u987b\u505a\u51fa\u54ea\u4e9b\u6280\u672f\u59a5\u534f\uff0c\u800c\u8fd9\u4e9b\u59a5\u534f\u6070\u6070\u8bc1\u660e\u4e86\u5b83\u4e0d\u662f\u4e00\u4e2a\u5e38\u89c4\u7684G2G\u5ef6\u65f6\u3002<br \/>\n2.  <strong>\u76ee\u6807\u51b2\u7a81<\/strong>\uff1a\u8bc1\u660e\u201c\u7ade\u901f\u6a21\u5f0f\u201d\u7684\u6280\u672f\u5b9e\u73b0\u8def\u5f84\uff0c\u4e0e\u4f60\u63d0\u51fa\u7684\u9879\u76ee\u89c4\u683c\uff081080p\/100fps H.265\uff09\u662f<strong>\u76f8\u4e92\u77db\u76fe<\/strong>\u7684\u3002<\/p>\n<hr \/>\n<h3>1. \u6280\u672f\u89e3\u6784\uff1a\u201c\u7ade\u901f\u6a21\u5f0f\u201d\u662f\u5982\u4f55\u5b9e\u73b0 15ms \u5ef6\u65f6\u7684\uff1f<\/h3>\n<p>\u201c\u7ade\u901f\u6a21\u5f0f\u201d\u6216 FPV \u5708\u5e38\u8bf4\u7684 &#8220;Low Latency Mode&#8221; \u662f\u4e00\u79cd\u4e3a\u4e86\u8ffd\u6c42\u6781\u9650\u54cd\u5e94\u901f\u5ea6\u800c<strong>\u727a\u7272\u51e0\u4e4e\u6240\u6709\u5176\u4ed6\u6307\u6807<\/strong>\u7684\u7279\u6b8a\u5de5\u4f5c\u72b6\u6001\u3002\u4e3a\u4e86\u5c06 G2G \u5ef6\u65f6\u538b\u7f29\u5230 15ms \u8fd9\u79cd\u7269\u7406\u6781\u9650\uff0c\u5b83\u5fc5\u987b\u5728\u6574\u4e2a\u94fe\u8def\u4e0a\u91c7\u7528\u4e00\u7cfb\u5217\u201c\u4f5c\u5f0a\u201d\u822c\u7684\u4f18\u5316\u624b\u6bb5\uff1a<\/p>\n<h4><strong>\u624b\u6bb5\u4e00\uff1a\u727a\u7272\u56fe\u50cf\u8d28\u91cf\u548c\u5206\u8fa8\u7387 (T1: \u91c7\u96c6)<\/strong><\/h4>\n<ul>\n<li><strong>\u4f20\u611f\u5668\u533a\u57df\u88c1\u526a (Sensor Cropping)<\/strong>\uff1a\u5b83<strong>\u4e0d\u4f1a<\/strong>\u8bfb\u53d6\u5b8c\u6574\u7684 1920&#215;1080 \u4f20\u611f\u5668\u533a\u57df\u3002\u800c\u662f\u53ea\u8bfb\u53d6\u4e2d\u592e\u7684\u4e00\u5c0f\u5757\u533a\u57df\uff08\u4f8b\u5982 1280&#215;720 \u751a\u81f3\u66f4\u5c0f\uff09\uff0c\u7136\u540e\u518d\u62c9\u4f38\u6216\u63d2\u503c\u5230\u5c4f\u5e55\u4e0a\u3002\u8bfb\u53d6\u66f4\u5c11\u7684\u6570\u636e\uff0cT1 \u7684\u4f20\u611f\u5668\u8bfb\u51fa\u65f6\u95f4\u5c31\u80fd\u4ece 10ms \u5927\u5e45\u7f29\u77ed\u5230 <strong>2-3ms<\/strong>\u3002<\/li>\n<li><strong>ISP \u65c1\u8def (ISP Bypass)<\/strong>\uff1a\u51e0\u4e4e\u4f1a\u8df3\u8fc7\u6240\u6709\u8017\u65f6\u7684 ISP \u56fe\u50cf\u5904\u7406\u6b65\u9aa4\u3002\u753b\u9762\u53ef\u80fd\u6ca1\u6709\u7cbe\u7ec6\u7684\u964d\u566a\u3001\u5bbd\u52a8\u6001\uff08WDR\uff09\u3001\u8272\u5f69\u6821\u6b63\u3002\u8fd9\u80fd\u5c06 ISP \u5904\u7406\u65f6\u95f4\u4ece 5-10ms \u538b\u7f29\u5230 <strong>1-2ms<\/strong>\u3002<\/li>\n<\/ul>\n<h4><strong>\u624b\u6bb5\u4e8c\uff1a\u653e\u5f03 H.265 \u9ad8\u538b\u7f29\u6bd4\u7f16\u7801 (T2: \u7f16\u7801)<\/strong><\/h4>\n<ul>\n<li><strong>\u6539\u7528\u8d85\u7b80\u5355\u7f16\u7801\u6216\u4e0d\u7f16\u7801<\/strong>\uff1a\u8981\u5b9e\u73b0 1-2ms \u7684\u7f16\u7801\uff0c\u6807\u51c6\u7684 H.265 \u5e27\u95f4\u9884\u6d4b\uff08Inter-prediction\uff09\u51e0\u4e4e\u4e0d\u53ef\u80fd\u3002\u5b83\u5f88\u53ef\u80fd\u5207\u6362\u5230\uff1a\n<ul>\n<li><strong>\u7c7b MJPEG \u7f16\u7801<\/strong>\uff1a\u53ea\u8fdb\u884c\u5e27\u5185\u538b\u7f29\uff0c\u6bcf\u4e2a\u5206\u7247\uff08slice\uff09\u72ec\u7acb\u7f16\u7801\uff0c\u7f16\u5b8c\u7acb\u523b\u53d1\u9001\u3002<\/li>\n<li><strong>\u7c7b HDZero \u65b9\u6848<\/strong>\uff1a\u4f7f\u7528\u4e00\u79cd\u975e\u5e38\u8f7b\u91cf\u7ea7\u7684\u3001\u4e13\u6709\u7684\u3001\u4f4e\u538b\u7f29\u6bd4\u7684\u89c6\u9891\u7f16\u7801\u65b9\u6848\uff0c\u5ef6\u8fdf\u6781\u4f4e\uff0c\u4f46\u6548\u7387\u8fdc\u4e0d\u5982 H.265\u3002<\/li>\n<li><strong>\u7ed3\u679c<\/strong>\uff1a\u7f16\u7801\u5ef6\u65f6\u53ef\u4ee5\u88ab\u538b\u7f29\u5230 <strong>2-3ms<\/strong>\uff0c\u4f46\u4ee3\u4ef7\u662f\u7801\u6d41\u4f1a\u53d8\u5f97\u975e\u5e38\u5927\uff0c\u6216\u8005\u8bf4\u5728\u540c\u7b49\u7801\u7387\u4e0b\u753b\u8d28\u8fdc\u4e0d\u5982 H.265\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4><strong>\u624b\u6bb5\u4e09\uff1a\u727a\u7272\u753b\u9762\u5b8c\u6574\u6027 (T5: \u663e\u793a)<\/strong><\/h4>\n<ul>\n<li><strong>\u542f\u7528\u5c4f\u5e55\u6495\u88c2 (Screen Tearing)<\/strong>\uff1a\u8fd9\u662f\u6700\u5173\u952e\u7684\u4e00\u6b65\u3002\u5728\u7ade\u901f\u6a21\u5f0f\u4e0b\uff0c\u773c\u955c<strong>\u4e0d\u4f1a\u7b49\u5f85\u5782\u76f4\u540c\u6b65 (V-Sync)<\/strong>\u3002\u89e3\u7801\u5668\u4e00\u65e6\u89e3\u7801\u5b8c\u753b\u9762\u7684\u4e00\u4e2a\u201c\u6761\u5e26\u201d\uff08scanline\/slice\uff09\uff0c\u5c31\u7acb\u523b\u628a\u5b83\u9001\u5230\u663e\u793a\u9762\u677f\u4e0a\u3002\u8fd9\u610f\u5473\u7740\u4f60\u770b\u5230\u7684\u753b\u9762\u4e0a\u534a\u90e8\u5206\u53ef\u80fd\u662f\u524d\u4e00\u5e27\u7684\uff0c\u4e0b\u534a\u90e8\u5206\u662f\u5f53\u524d\u5e27\u7684\u3002\n<ul>\n<li><strong>\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u505a\uff1f<\/strong> \u8fd9\u5b8c\u5168\u6d88\u9664\u4e86\u5e73\u5747 8.3ms (60Hz) \u6216 4.15ms (120Hz) \u7684 V-Sync \u7b49\u5f85\u5ef6\u8fdf\u3002\u663e\u793a\u5ef6\u8fdf\u53ef\u4ee5\u88ab\u538b\u7f29\u5230\u60ca\u4eba\u7684 <strong>1-2ms<\/strong>\u3002<\/li>\n<li><strong>\u4ee3\u4ef7<\/strong>\uff1a\u753b\u9762\u4f1a\u4ea7\u751f\u8089\u773c\u53ef\u89c1\u7684\u6495\u88c2\uff0c\u4f46\u5728\u5206\u79d2\u5fc5\u4e89\u7684\u7ade\u901f\u98de\u884c\u4e2d\uff0c\u8fd9\u662f\u53ef\u4ee5\u63a5\u53d7\u7684\u4ee3\u4ef7\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>\u91cd\u65b0\u8ba1\u7b97\u201c\u7ade\u901f\u6a21\u5f0f\u201d\u4e0b\u7684 G2G \u5ef6\u65f6<\/h3>\n<p>\u73b0\u5728\u6211\u4eec\u7528\u8fd9\u4e9b\u201c\u4f5c\u5f0a\u201d\u624b\u6bb5\u91cd\u65b0\u4f30\u7b97\u4e00\u4e0b G2G \u5ef6\u65f6\uff1a<\/p>\n<ul>\n<li><strong>T1 (\u91c7\u96c6\/ISP)<\/strong>: \u88c1\u526a\u8bfb\u53d6(2ms) + \u65c1\u8defISP(1ms) = <strong>3ms<\/strong><\/li>\n<li><strong>T2 (\u7f16\u7801)<\/strong>: \u8f7b\u91cf\u7ea7\u4e13\u6709\u7f16\u7801 = <strong>2ms<\/strong><\/li>\n<li><strong>T3 (\u94fe\u8def\u4f20\u8f93)<\/strong>: DJI \u4f18\u5316\u7684\u65e0\u7ebf\u94fe\u8def = <strong>5-8ms<\/strong> (\u8fd9\u662f\u4ed6\u4eec\u7684\u6838\u5fc3\u6280\u672f\uff0c\u6211\u4eec\u5047\u8bbe\u4e00\u4e2a\u6fc0\u8fdb\u503c)<\/li>\n<li><strong>T4 (\u89e3\u7801)<\/strong>: \u8f7b\u91cf\u7ea7\u89e3\u7801 = <strong>2ms<\/strong><\/li>\n<li><strong>T5 (\u663e\u793a)<\/strong>: \u653e\u5f03V-Sync\uff0c\u76f4\u63a5\u6e32\u67d3 = <strong>1ms<\/strong><\/li>\n<\/ul>\n<p><strong>G2G \u603b\u5ef6\u65f6 (\u7ade\u901f\u6a21\u5f0f) = 3 + 2 + 8 + 2 + 1 = 16ms<\/strong><\/p>\n<p>\u770b\uff0c\u8fd9\u4e2a\u8ba1\u7b97\u7ed3\u679c\u5df2\u7ecf<strong>\u975e\u5e38\u63a5\u8fd1<\/strong>\u5927\u7586\u5b98\u65b9\u58f0\u79f0\u7684 15ms \u4e86\u3002\u8fd9\u96c4\u8fa9\u5730\u8bc1\u660e\u4e86\uff1a<strong>15ms \u8fd9\u4e2a\u6570\u5b57\u662f\u771f\u5b9e\u53ef\u4fe1\u7684\uff0c\u4f46\u5b83\u662f\u5728\u4e00\u4e2a\u6781\u5ea6\u59a5\u534f\u7684\u201c\u7ade\u901f\u6a21\u5f0f\u201d\u4e0b\u6d4b\u5f97\u7684\uff0c\u5b83\u4e0d\u4ee3\u8868\u6807\u51c6\u5de5\u4f5c\u6a21\u5f0f\u4e0b\u7684\u6027\u80fd\u3002<\/strong><\/p>\n<hr \/>\n<h3>2. \u8bc1\u636e\u6838\u5fc3\uff1a\u76ee\u6807\u51b2\u7a81<\/h3>\n<p>\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u56de\u5230\u4f60\u9879\u76ee\u7684\u89c4\u683c\u8981\u6c42\uff0c\u8fd9\u5c31\u662f\u6700\u6709\u529b\u7684\u8bc1\u636e\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th align=\"left\">\u9879\u76ee\u89c4\u683c<\/th>\n<th align=\"left\">\u5927\u7586\u201c\u7ade\u901f\u6a21\u5f0f\u201d\u7684\u5b9e\u73b0\u65b9\u5f0f<\/th>\n<th align=\"left\">\u7ed3\u8bba<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\"><strong>1080p<\/strong>\/100fps<\/td>\n<td align=\"left\"><strong>\u88c1\u526a\u5206\u8fa8\u7387<\/strong>\uff08\u975e\u539f\u751f1080p\uff09<\/td>\n<td align=\"left\"><strong>\u51b2\u7a81<\/strong><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>H.265<\/strong> \u56fe\u4f20\u753b\u8d28<\/td>\n<td align=\"left\"><strong>\u653e\u5f03H.265<\/strong>\uff0c\u6539\u7528\u4f4e\u5ef6\u8fdf\u3001\u4f4e\u538b\u7f29\u6bd4\u7f16\u7801<\/td>\n<td align=\"left\"><strong>\u51b2\u7a81<\/strong><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>60Mbps<\/strong> \u6700\u5927\u56fe\u4f20\u7801\u7387<\/td>\n<td align=\"left\">\u4e3a\u4e86\u4f4e\u5ef6\u8fdf\uff0c\u901a\u5e38\u4f7f\u7528\u56fa\u5b9a\u3001\u8f83\u4f4e\u7684\u7801\u7387\uff0c\u4e14\u7f16\u7801\u6548\u7387\u4f4e<\/td>\n<td align=\"left\"><strong>\u51b2\u7a81<\/strong><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\uff08\u9690\u542b\u8981\u6c42\uff09\u753b\u9762\u6d41\u7545\u65e0\u6495\u88c2<\/td>\n<td align=\"left\"><strong>\u4e3b\u52a8\u5f15\u5165\u753b\u9762\u6495\u88c2<\/strong><\/td>\n<td align=\"left\"><strong>\u51b2\u7a81<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u7ed3\u8bba\u6027\u8bc1\u636e\uff1a<\/strong><\/p>\n<p>\u60f3\u8981\u5f00\u53d1\u7684\u7cfb\u7edf\uff0c\u5176\u6838\u5fc3\u6307\u6807\u662f\u201c<strong>\u9ad8\u8d28\u91cf\u7684 1080p\/100fps H.265 \u56fe\u4f20<\/strong>\u201d\u3002\u800c\u5927\u7586\u5b9e\u73b0 15ms \u5ef6\u65f6\u7684\u201c\u7ade\u901f\u6a21\u5f0f\u201d\uff0c\u5176\u6838\u5fc3\u662f<strong>\u653e\u5f03\u4e86<\/strong>\u9ad8\u8d28\u91cf\u3001H.265 \u548c\u539f\u751f\u5206\u8fa8\u7387\u3002<\/p>\n<p><strong>\u6240\u4ee5\uff0c\u5927\u7586\u5b98\u65b9\u7684\u56de\u590d\u6070\u6070\u8bc1\u660e\u4e86\uff1a<\/strong><br \/>\n\u5f53\u4ed6\u4eec\u8ffd\u6c42 <strong>H.265 \u9ad8\u753b\u8d28\u6a21\u5f0f<\/strong>\uff08\u7c7b\u4f3c\u4f60\u7684\u76ee\u6807\uff09\u65f6\uff0c\u5ef6\u65f6\u662f <strong>25-40ms<\/strong> \u8fd9\u4e2a\u8303\u56f4\u3002<br \/>\n\u5f53\u4ed6\u4eec\u8ffd\u6c42 <strong>15ms \u6781\u9650\u4f4e\u5ef6\u65f6<\/strong>\u65f6\uff0c\u5c31\u5fc5\u987b\u5207\u6362\u5230\u53e6\u4e00\u4e2a<strong>\u5b8c\u5168\u4e0d\u540c<\/strong>\u7684\u6280\u672f\u65b9\u6848\uff08\u7ade\u901f\u6a21\u5f0f\uff09\u3002<\/p>\n<p><strong>\u8fd9\u610f\u5473\u7740\uff1a<\/strong><\/p>\n<p>\u4e0d\u80fd\u628a 15ms \u4f5c\u4e3a G2G \u7684\u76ee\u6807\uff0c\u56e0\u4e3a\u90a3\u9700\u8981\u653e\u5f03 H.265 \u548c 1080p\u3002\u5e94\u8be5\u575a\u6301\u4f60\u7684\u9ad8\u753b\u8d28\u76ee\u6807\uff0c\u5e76\u63a5\u53d7\u4e00\u4e2a\u66f4\u73b0\u5b9e\u7684 G2G \u5ef6\u65f6\uff08\u4f8b\u5982 40-50ms\uff09\uff0c\u7136\u540e\u628a <strong>\u201c15ms \u94fe\u8def\u5ef6\u65f6\u201d<\/strong> \u4f5c\u4e3a\u5176\u4e2d\u6700\u6838\u5fc3\u7684 <strong>T3 \u73af\u8282<\/strong> \u7684\u653b\u5173\u76ee\u6807\u3002\u8fd9\u624d\u662f\u552f\u4e00\u6b63\u786e\u4e14\u53ef\u884c\u7684\u5de5\u7a0b\u8def\u5f84\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u679c\u5bf9\u201c\u5ef6\u65f6\u201d\u7684\u5b9a\u4e49\u7406\u89e3\u9519\u8bef\uff0c\u6574\u4e2a\u7814\u53d1\u65b9\u5411\u90fd\u4f1a\u8d70\u504f\u3002 \u6838\u5fc3\u8bba\u636e\uff1aGlass-to-Glass \u5ef6\u65f6\u5728\u6280\u672f\u4e0a\u65e0\u6cd5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-3367","post","type-post","status-publish","format-standard","hentry","category-plana"],"_links":{"self":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/3367","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3367"}],"version-history":[{"count":1,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/3367\/revisions"}],"predecessor-version":[{"id":3368,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/3367\/revisions\/3368"}],"wp:attachment":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3367"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}