Short for high-bandwidth digital-content protection, a specification developed by Intel for protecting digital entertainment content that uses the DVI interface. HDCP encrypts the transmission of digital content between the video source, or transmitter — such as a computer, DVD player or set-top box — and the digital display, or receiver — such as a monitor, television or projector. HDCP is not designed to prevent copying or recording of digital content but to protect the integrity of content as it is being transmitted.
Implementation of HDCP requires a license obtainable from the Digital Content Protection, LLC, which then issues a set of unique secret device keys to all authorized devices. During authentication, the receiver will only accept content once it demonstrates knowledge of the keys. Furthermore, to prevent eavesdropping and stealing of the data, the transmitter and receiver will generate a shared secret value that is consistently checked throughout the transmission. Once authentication is established, the transmitter encrypts the data and sends it to the receiver for decryption.
Short for High-level Data Link Control, a transmission protocol used at the data link layer (layer 2) of the OSI seven layer model for data communications. The HDLC protocol embeds information in a data frame that allows devices to control data flow and correct errors. HDLC is an ISO standard developed from the Synchronous Data […]
Handheld Device Markup Language is used to format content for Web-enabled mobile phones. HDML is Openwave’s (formerly known as phone.com) proprietary language, which can only be viewed on mobile phones that use Openwave browsers. HDML came before the WAP standard was created. It uses Openwave’s Handheld Device Transport Protocol (HDTP), instead of WAP. Phones access […]
Short for hard disk recorder, another name for a personal video recorder.
Short for High-Definition Television, a new type of television that provides much better resolution than current televisions based on the NTSC standard. HDTV is a digital TV broadcasting format where the broadcast transmits widescreen pictures with more detail and quality than found in a standard analog television, or other digital television formats. HDTV is a […]
HDTV-ready refers to a television set which does not come with an integrated HDTV tuner. You must purchase the tuner (also called the HDTV receiver, set-top box, or HDTV decoder) separately.