https://deguiliu.github.io/tech-notes/tags/uvc/Recent content in UVC on 技术笔记Hugo -- 0.168.0zh-cnSun, 20 Sep 2026 08:00:00 +0000https://deguiliu.github.io/tech-notes/posts/architecture/embedded_usb_dual_video_output/Sun, 20 Sep 2026 08:00:00 +0000https://deguiliu.github.io/tech-notes/posts/architecture/embedded_usb_dual_video_output/一台嵌入式设备通过同一个 USB 控制器输出两路 UVC 视频：IAD 负责让主机看到两个摄像头，内部视频链负责分别产生两路帧，环形缓冲保证单路稳定，时间戳和上位机逻辑完成最终配对。https://deguiliu.github.io/tech-notes/posts/practice/usb_uvc_enumeration_and_negotiation/Fri, 18 Sep 2026 08:00:00 +0000https://deguiliu.github.io/tech-notes/posts/practice/usb_uvc_enumeration_and_negotiation/主机能够枚举一颗从未见过的芯片，并非因为主机预先识别了该芯片，而是因为设备按 USB 规范用描述符描述自身。描述符说明设备的身份与接口数量，Probe/Commit 协商确定输出格式。https://deguiliu.github.io/tech-notes/posts/architecture/uvc_vs_csi2_output_paths/Sun, 23 Aug 2026 08:00:00 +0000https://deguiliu.github.io/tech-notes/posts/architecture/uvc_vs_csi2_output_paths/同源像素走 UVC 时以描述符和 endpoint 面向 PC，走 CSI-2 时以 data type 和 VC 面向板级接收端，两者的封装、物理层与带宽边界不同。