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  2. List of copy protection schemes - Wikipedia

    en.wikipedia.org/wiki/List_of_copy_protection...

    Serial Copy Management System Records in the sub code data bits that expresses whether the media is copy allowed(00), copy once(10) or copy prohibited(11). Traitor Tracing Rather than directly preventing copying, embeds user information into files so if they are uploaded, the copyright holder could find out exactly who uploaded the file.

  3. Audio Home Recording Act - Wikipedia

    en.wikipedia.org/wiki/Audio_Home_Recording_Act

    The AHRA required that all digital audio recording devices conform to a form of copy protection called the Serial Copy Management System or its functional equivalent. [15] A SCMS is a section of code which permits limited copying of an original recording, but prohibits copies from being made by subsequent generations.

  4. Serial Copy Management System - Wikipedia

    en.wikipedia.org/wiki/Serial_Copy_Management_System

    The Serial Copy Management System (SCMS) is a copy protection scheme that was created in response to the digital audio tape (DAT) invention, in order to prevent DAT recorders from making second-generation or serial copies. SCMS sets a "copy" bit in all copies, which prevents anyone from making further copies of those first copies. It does not ...

  5. Printer tracking dots - Wikipedia

    en.wikipedia.org/wiki/Printer_tracking_dots

    Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was used to print the document.

  6. Media control symbols - Wikipedia

    en.wikipedia.org/wiki/Media_control_symbols

    To identify a feature or a selector control that reverses automatically the tape running direction every time the tape comes to either of its limits. Repeat once U+1F502 🔂 — Information: U+2139 ℹ #6222 Information, general; help, general: To identify the control to examine the status of the equipment. Reload U+1F503 🔃 — Refresh U+ ...

  7. Teletype Model 33 - Wikipedia

    en.wikipedia.org/wiki/Teletype_Model_33

    A less-common tape reader had a four-position START/AUTO/STOP/FREE lever. In the AUTO position it could be commanded on and off remotely. The tape punch is the unit directly behind the reader. As it exits the machine, the tape passes under a triangular lip that allows the tape to be easily torn by lifting against the sharp edge of the lip.

  8. International Standard Recording Code - Wikipedia

    en.wikipedia.org/wiki/International_Standard...

    The International Standard Recording Code (ISRC) is an international standard code for uniquely identifying sound recordings and music video recordings. The code was developed by the recording industry in conjunction with the ISO technical committee 46, subcommittee 9 (TC 46/SC 9) , which codified the standard as ISO 3901 in 1986, and updated ...

  9. Soundboard (computer program) - Wikipedia

    en.wikipedia.org/wiki/Soundboard_(computer_program)

    Thanks to the popularization of online videogames and communication tools through the Internet, different soundboard software has appeared. Note the following developments: EXP Soundboard (open source and compatible with WAV and MP3 audio files) Soundpad, or with more features Noise-o-matic, Resanance or Voicemod (combining a voice changer, a voice generator and a soundboard in the same app.)