{
  "added_at": "2026-11-08",
  "category": "reconstruction-cases",
  "class": "hardware",
  "description_en": "ntrig-calib reconstructs the Surface Pro 3 N-Trig digitizer's calibration exchange as a Linux Python script. The project describes Ghidra analysis of CalibG4.exe and NCPTransportInterface.dll, including NCP framing, START_CALIB and GET_STATUS commands and HID report transport. The author reports a working fix on one device while documenting uncertain response behavior and calibration longevity.",
  "description_zh": "ntrig-calib 将 Surface Pro 3 的 N-Trig 数字化仪校准流程重建为 Linux Python 脚本。项目记录对 CalibG4.exe 和 NCPTransportInterface.dll 的 Ghidra 分析，涵盖 NCP 帧格式、START_CALIB 与 GET_STATUS 指令及 HID 报告传输。作者报告单台设备修复成功，同时指出响应行为和校准持久性仍有不确定性。",
  "entry_url": "https://awesomerea.org/resources/ntrig-calib-surface-pro-3-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/ntrig-calib-surface-pro-3-case/",
  "evidence_class": 2,
  "evidence_status": "observed",
  "evidence_url": "https://github.com/thiswillbeyourgithub/ntrig-calib/blob/03256e10abb8a9ac37849309361b03b6aa4fea19/README.md",
  "group": "cases",
  "id": "ntrig-calib-surface-pro-3-case",
  "json_url": "https://awesomerea.org/resources/ntrig-calib-surface-pro-3-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/ntrig-calib-surface-pro-3-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/ntrig-calib-surface-pro-3-case/index.md",
  "name": "ntrig-calib: reconstructing Surface Pro 3 digitizer calibration",
  "name_zh": "ntrig-calib：重建 Surface Pro 3 数字化仪校准流程",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirement_facets": [
    "prerequisites",
    "testing",
    "limits",
    "license"
  ],
  "requirements": [
    "Surface Pro 3 with an N-Trig DuoSense digitizer running Linux.",
    "The author reports success on one device; the NCP response path has not been checked across multiple devices or kernel versions.",
    "Calibration may drift again, and success conditions are not fully understood.",
    "AGPL-3.0 License."
  ],
  "requirements_zh": [
    "需要运行 Linux、配有 N-Trig DuoSense 数字化仪的 Surface Pro 3。",
    "作者报告单台设备成功；NCP 响应路径尚未在多台设备或不同内核版本上检查。",
    "校准可能再次漂移，成功条件尚未完全明确。",
    "AGPL-3.0 许可证。"
  ],
  "scope": "unknown",
  "targets": [
    "binary",
    "protocol"
  ],
  "url": "https://github.com/thiswillbeyourgithub/ntrig-calib",
  "verification": "source-reviewed",
  "verified_at": "2026-11-06"
}