Lecture capture EDU-02

Reference design · project selection and tests required..

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Choose a view, then a route, connection or device. Lines retain their original direction. Repeated device IDs refer to the same equipment across views.

EDU-02

Presentation and presenter video meet at the recorder. Room sound and recorded sound use separate mixes.

Video & data

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-02 · Video & dataReference design. HDMI presentation and SDI camera enter one recorder. Lecturer and question microphones plus presentation sound enter the DSP. Recording and room mixes are separate. Recorder status drives indication; an agreed upload workflow publishes to the institution's repository. REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"f69a081cf2fc4c9cead3b5459f9d069d6cfdb2a8b0a3f2dd72e35556faa12834","view":"signal","nodes":["PC","SW","SCREEN","REC","CAM","MEDIA","STORE"],"edges":["L01","L02","L03","L04","L10","L11"]}PIXEL COMMAND SOLUTIONS / EDU-02 / VIDEO & DATAVideo & dataREFERENCE DESIGN · PROJECT VALIDATION REQUIREDPC → SW: HDMIHDMISW → SCREEN: HDMI output 1HDMI output 1SW → REC: HDMI output 2HDMI output 2CAM → REC: 3G-SDI3G-SDIREC → MEDIA: Local writeLocal writeREC → STORE: IP file upload: agreed methodIP file upload: agreedmethodTeaching PC ×1 Includes operator monitorPCTeaching PC ×1Presentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extractionSWPresentation switcher×1Main display ×1SCREENMain display ×1Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabledRECRecorder ×1Presenter PTZ camera ×1 Separate DC powerCAMPresenter PTZ camera×1Recording medium ×1MEDIARecording medium ×1Institutional repository ×1 service Publication and access rulesSTOREInstitutionalrepository ×1 serviceVideo / LED dataNetwork / data
Devices, connections & design conditions 6 connections
  • Teaching PC ×1; Includes operator monitor → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: HDMI.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Main display ×1: HDMI output 1.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: HDMI output 2.
  • Presenter PTZ camera ×1; Separate DC power → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: 3G-SDI.
  • Microphones ×2; Lecturer + handheld questions → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: 2 analogue inputs.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: Analogue L/R.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Amplifier ×1: Line output 1: room mix.
  • Amplifier ×1 → Loudspeakers ×4; Initial layout assumption: Speaker lines.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Line output 2: record mix.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Recording medium ×1: Local write.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Institutional repository ×1 service; Publication and access rules: IP file upload: agreed method.
  • Institutional repository ×1 service; Publication and access rules → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Upload result / publication status (control/status/authorisation).
  • Integrated panel/controller ×1 → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: IP API: start / stop (control/status/authorisation).
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Integrated panel/controller ×1: IP API: actual recording state (control/status/authorisation).
  • Integrated panel/controller ×1 → Recording indicator ×1: GPIO: state indication (control/status/authorisation).
  • Integrated panel/controller ×1 → Presenter PTZ camera ×1; Separate DC power: IP VISCA: presets (control/status/authorisation).
  • Integrated panel/controller ×1 → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: IP: level / mute (control/status/authorisation).
  • Integrated panel/controller ×1 → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: RS-232: source (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: RS-232: power (control/status/authorisation).
PC
Teaching PC ×1 Includes operator monitor
SW
Presentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extraction
SCREEN
Main display ×1
REC
Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabled
CAM
Presenter PTZ camera ×1 Separate DC power
MEDIA
Recording medium ×1
STORE
Institutional repository ×1 service Publication and access rules
  1. PC → SWHDMI
  2. SW → SCREENHDMI output 1
  3. SW → RECHDMI output 2
  4. CAM → REC3G-SDI
  5. REC → MEDIALocal write
  6. REC → STOREIP file upload: agreed method

REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking.

Audio & return paths

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-02 · Audio & return pathsReference design. HDMI presentation and SDI camera enter one recorder. Lecturer and question microphones plus presentation sound enter the DSP. Recording and room mixes are separate. Recorder status drives indication; an agreed upload workflow publishes to the institution's repository. REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"f69a081cf2fc4c9cead3b5459f9d069d6cfdb2a8b0a3f2dd72e35556faa12834","view":"audio","nodes":["SW","REC","MIC","DSP","AMP","SPK"],"edges":["L05","L06","L07","L08","L09"]}PIXEL COMMAND SOLUTIONS / EDU-02 / AUDIO & RETURN PATHSAudio & return pathsREFERENCE DESIGN · PROJECT VALIDATION REQUIREDMIC → DSP: 2 analogue inputs2 analogue inputsSW → DSP: Analogue L/RAnalogue L/RDSP → AMP: Line output 1: room mixLine output 1: room mixAMP → SPK: Speaker linesSpeaker linesDSP → REC: Line output 2: record mixLine output 2: recordmixPresentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extractionSWPresentation switcher×1Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabledRECRecorder ×1Microphones ×2 Lecturer + handheld questionsMICMicrophones ×2Audio processor ×1 4 analogue inputs used Separate room / record mixesDSPAudio processor ×1Amplifier ×1AMPAmplifier ×1Loudspeakers ×4 Initial layout assumptionSPKLoudspeakers ×4Audio
Devices, connections & design conditions 5 connections
  • Teaching PC ×1; Includes operator monitor → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: HDMI.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Main display ×1: HDMI output 1.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: HDMI output 2.
  • Presenter PTZ camera ×1; Separate DC power → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: 3G-SDI.
  • Microphones ×2; Lecturer + handheld questions → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: 2 analogue inputs.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: Analogue L/R.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Amplifier ×1: Line output 1: room mix.
  • Amplifier ×1 → Loudspeakers ×4; Initial layout assumption: Speaker lines.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Line output 2: record mix.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Recording medium ×1: Local write.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Institutional repository ×1 service; Publication and access rules: IP file upload: agreed method.
  • Institutional repository ×1 service; Publication and access rules → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Upload result / publication status (control/status/authorisation).
  • Integrated panel/controller ×1 → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: IP API: start / stop (control/status/authorisation).
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Integrated panel/controller ×1: IP API: actual recording state (control/status/authorisation).
  • Integrated panel/controller ×1 → Recording indicator ×1: GPIO: state indication (control/status/authorisation).
  • Integrated panel/controller ×1 → Presenter PTZ camera ×1; Separate DC power: IP VISCA: presets (control/status/authorisation).
  • Integrated panel/controller ×1 → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: IP: level / mute (control/status/authorisation).
  • Integrated panel/controller ×1 → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: RS-232: source (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: RS-232: power (control/status/authorisation).
SW
Presentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extraction
REC
Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabled
MIC
Microphones ×2 Lecturer + handheld questions
DSP
Audio processor ×1 4 analogue inputs used Separate room / record mixes
AMP
Amplifier ×1
SPK
Loudspeakers ×4 Initial layout assumption
  1. MIC → DSP2 analogue inputs
  2. SW → DSPAnalogue L/R
  3. DSP → AMPLine output 1: room mix
  4. AMP → SPKSpeaker lines
  5. DSP → RECLine output 2: record mix

REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking.

Control & status

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-02 · Control & statusReference design. HDMI presentation and SDI camera enter one recorder. Lecturer and question microphones plus presentation sound enter the DSP. Recording and room mixes are separate. Recorder status drives indication; an agreed upload workflow publishes to the institution's repository. REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"f69a081cf2fc4c9cead3b5459f9d069d6cfdb2a8b0a3f2dd72e35556faa12834","view":"control","nodes":["SW","SCREEN","REC","CAM","DSP","STORE","CTRL","LAMP"],"edges":["L12","L13","L14","L15","L16","L17","L18","L19"]}PIXEL COMMAND SOLUTIONS / EDU-02 / CONTROL & STATUSControl & statusREFERENCE DESIGN · PROJECT VALIDATION REQUIREDSTORE → REC: Upload result / publication statusUpload result /publication statusCTRL → REC: IP API: start / stopIP API: start / stopREC → CTRL: IP API: actual recording stateIP API: actualrecording stateCTRL → LAMP: GPIO: state indicationGPIO: state indicationCTRL → CAM: IP VISCA: presetsIP VISCA: presetsCTRL → DSP: IP: level / muteIP: level / muteCTRL → SW: RS-232: sourceRS-232: sourceCTRL → SCREEN: RS-232: powerRS-232: powerPresentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extractionSWPresentation switcher×1Main display ×1SCREENMain display ×1Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabledRECRecorder ×1Presenter PTZ camera ×1 Separate DC powerCAMPresenter PTZ camera×1Audio processor ×1 4 analogue inputs used Separate room / record mixesDSPAudio processor ×1Institutional repository ×1 service Publication and access rulesSTOREInstitutionalrepository ×1 serviceIntegrated panel/controller ×1CTRLIntegratedpanel/controller ×1Recording indicator ×1LAMPRecording indicator ×1Control / status
Devices, connections & design conditions 8 connections
  • Teaching PC ×1; Includes operator monitor → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: HDMI.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Main display ×1: HDMI output 1.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: HDMI output 2.
  • Presenter PTZ camera ×1; Separate DC power → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: 3G-SDI.
  • Microphones ×2; Lecturer + handheld questions → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: 2 analogue inputs.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: Analogue L/R.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Amplifier ×1: Line output 1: room mix.
  • Amplifier ×1 → Loudspeakers ×4; Initial layout assumption: Speaker lines.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Line output 2: record mix.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Recording medium ×1: Local write.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Institutional repository ×1 service; Publication and access rules: IP file upload: agreed method.
  • Institutional repository ×1 service; Publication and access rules → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Upload result / publication status (control/status/authorisation).
  • Integrated panel/controller ×1 → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: IP API: start / stop (control/status/authorisation).
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Integrated panel/controller ×1: IP API: actual recording state (control/status/authorisation).
  • Integrated panel/controller ×1 → Recording indicator ×1: GPIO: state indication (control/status/authorisation).
  • Integrated panel/controller ×1 → Presenter PTZ camera ×1; Separate DC power: IP VISCA: presets (control/status/authorisation).
  • Integrated panel/controller ×1 → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: IP: level / mute (control/status/authorisation).
  • Integrated panel/controller ×1 → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: RS-232: source (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: RS-232: power (control/status/authorisation).
SW
Presentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extraction
SCREEN
Main display ×1
REC
Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabled
CAM
Presenter PTZ camera ×1 Separate DC power
DSP
Audio processor ×1 4 analogue inputs used Separate room / record mixes
STORE
Institutional repository ×1 service Publication and access rules
CTRL
Integrated panel/controller ×1
LAMP
Recording indicator ×1
  1. STORE → RECUpload result / publication status
  2. CTRL → RECIP API: start / stop
  3. REC → CTRLIP API: actual recording state
  4. CTRL → LAMPGPIO: state indication
  5. CTRL → CAMIP VISCA: presets
  6. CTRL → DSPIP: level / mute
  7. CTRL → SWRS-232: source
  8. CTRL → SCREENRS-232: power

REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking.

Typical architecture · not a project drawing