HT204154: Thunderbolt ports and displays: Frequently asked questions (FAQ)
Learn about Thunderbolt ports and displays: Frequently asked questions (FAQ)
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Mar 26, 2015 3:14 PM in response to Alarik108by Ziatron,Your display may not be on the "approved" list, or was removed from it. (Sony televisions seem to fail the HDCP handshake more than others.)
Apple's Mac lines includes a form of digital copy protection that will prevent protected media, such as DRM-infused iTunes movies, from playing back on devices that aren't compliant with the new priority protection measures.
The Hollywood demanded technology is called High-bandwidth Digital Content Protection (HDCP) and aims to prevent copying of digital audio and video content as it travels across a variety of display connectors, even if such copying is not in violation of fair use laws.
Among the connectors supported by the technology are the Mini DisplayPort found on Macs, in addition to others such as Digital Visual Interface (DVI), High-Definition Multimedia Interface (HDMI), Gigabit Video Interface (GVIF), Unified Display Interface (UDI) and Thunderbolt.
Apple has apparently acquired a license for the technology and is now using it across its lines to to prevent transmission of purchased iTunes content (and some DVDs) to devices that don't include support for HDCP.