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Courtroom Technology


The Northern District of Oklahoma provides equipment and presentation capabilities in all of its courtrooms. This equipment allows lawyers to present and display many types of evidence and testimony to the courtroom participants in clearer and more comprehensible ways.

If you are interested in a demonstration of the equipment, or receiving training, please contact the judge's courtroom deputy. Requests for use of the evidence presentation system should be made in advance of the trial date.

Audio System

  • Microphones - There are a variety of microphones located throughout the courtrooms including desktop, wireless, and lapel microphones.
    • Desktop microphones are used at the Judge, Clerk, Probation, and Attorney locations.
    • The microphones on the counsel tables have privacy mute buttons, which mute the microphones as long as the button is pressed.
  • Other Audio Sources
    • VEPS Cart - Other audio sources include the components located on the Video Evidence Presentation System (VEPS) Cart, which are discussed in the Video System section below.
    • Auxiliary Devices - Audio input capabilities are also available for auxiliary devices such as laptop computers, cassette decks, and VCRs. Audio connectors are provided on the presentation cart, lectern, and on the connection plates at the attorney locations.
    • Infrared System - Each courtroom has a two-channel Infrared System for the hearing impaired and for foreign language interpretation. Arrangements should be made in advance with the Courtroom Deputy if you need to use the Infrared System. Transmitters, which are mounted in the courtroom, send audio signals to the headsets using infrared waves:
      • Channel 1 broadcasts the language interpretation.
      • Channel 2 broadcasts the proceedings for those requiring hearing assistance.
    • Induction Neck Loop for the Hearing Impaired - The Court also has an induction neck loop available for the hearing impaired. Incoming sound is fed directly to the hearing aid. The induction neck loop transmits the audio signal from the receiver to hearing aids with a telecoil (“T“) switch, acting as a substitute for a headset.
  • Speakers
    • Speakers are located throughout the courtroom with dedicated speakers at the judge, reporter and witness locations.
    • When a bench conference is called:
      • Only the bench conference microphone is on.
      • All other courtroom microphones are temporarily disabled.
      • Masking noise is played over the jury and gallery speakers.

Video System

The Video Evidence Presentation System (VEPS) has several components—most of which are located on the VEPS carts in each courtroom. The VEPS cart is a mobile, self-contained workstation used by attorneys and court staff for evidence presentation from a variety of sources. The cart can be used at multiple locations in the courtroom.

  • Video Sources
    • Using Your Laptop Computer - You can connect a laptop computer to the VEPS cart or either counsel table for audio/video presentations. Images from the laptop can be displayed on all of the courtroom monitors. Laptop audio/video cables are provided for connecting laptops at designated locations.
    • Touch Screen Monitors - The witness box location and the VEPS cart have monitors with touch annotation capabilities. Images viewed on each monitor are identical to the images appearing on all other evidence presentation monitors throughout the courtroom.
      • Presentation Cart Location - The LCD touch monitor on the VEPS cart acts as a control screen and video evidence monitor. Use your finger to touch the button you want to activate. The touch panel menus allow you to select and adjust audio and video settings and keep track of courtroom timers, as well as annotate or draw on any video that is currently being viewed on the courtroom monitors.
      • Witness Box Location - The touch monitor located at the witness box also allows the user to draw or mark on any video that is currently being viewed on the courtroom monitors. The touch monitor is easy to use because the witness draws directly on the screen with his finger.
    • Document Camera - The document camera, located on the VEPS cart, allows any item placed on its display surface to be viewed on the courtroom display devices. The document camera is located on top of the VEPS cart. The document camera can be used to present papers, transparencies, pictures, small 3-D objects, negatives, specimens and more.
    • DVD and VCR - Some of the VEPS carts include DVD players and VCRs, which allow you to play DVDs or VHS tapes for display on all of the courtroom's video output devices. While not all of the VEPS carts have the DVD players and VCRs installed, there are input capabilities available in all courtrooms and you can ask the court to provide a portable DVD player or VCR for you to use. You are also welcome to connect your own DVD player or VCR.
  • Viewing Video Sources - Tools for viewing video sources vary for each courtroom, but include LCD monitors, plasma screens, large LCD screens, and a screen and projector (Courtroom 3 only). Video feeds to the jury, witness, gallery, or attorney monitors can be activated or muted.

Audio/Video Conferencing

  • Teleconferencing - Teleconferencing capabilities are available in all courtrooms. Arrangements should be made in advance with the Courtroom Deputy if you wish to use this feature.
  • Videoconferencing - Courtrooms 1 and 3 are equipped with videoconferencing capabilities. Video conferencing is only available for use with the prior permission of the Court.
    • Scheduling - To schedule use of the video conferencing equipment during a hearing, please contact the courtroom deputy for the judge that will be hearing your case. There is currently no cost to use the system. Reservations should be made as early as possible. The Court does not own a bridge facility (used to connect more than two conference sites during a call); therefore, bridging services and the associated costs will be the responsibility of counsel.
    • Testing the System - Counsel will be asked to participate in a test call at least 30 minutes prior to the scheduled event, if using a conference system that is not located at the courthouse. Court personnel will be available to test the equipment at the courthouse location.