Browse Definitions:
Definition

HD downconverter (high-definition downconverter)

An HD (high-definition) downconverter is a device that converts high-definition television ( HDTV ) video to standard-definition video that can be viewed on conventional television (TV) receivers or computer monitors, or recorded on DVD . A high-end HD downconverter performs these functions with a minimum of blurring, aliasing , and conversion noise, and can provide output at a variety of refresh rate s and aspect ratio s.

HDTV is a digital television display technology that provides image quality similar to that of 35-mm movies, and sound quality similar to that of a digital audio compact disc ( CD ). HD resolution is 720 or 1080 lines per frame, while standard resolution is 480 lines per frame. DVD is an optical disc technology with a multi-gigabyte ( GB ) storage capacity on a disc that is the same size as a CD of the type used for audio reproduction and computer storage.

HDTV broadcasters have expressed interest in HD downconverters, because they facilitate the conversion of HD programming to standard format for simulcasting to subscribers who might not own HDTV receivers. HD downconverters can also be used to simulcast HDTV programming over the Internet for viewing on personal computers. Video production engineers can use HD downconverters to record HDTV programs on DVD.

Some companies describe their products as HD-SDI ( Serial Digital Interface ) downconverters. Also see HD upconverter , a device that converts the digital data on a DVD to a format that can be viewed directly on an HDTV receiver without intermediate conversion to an analog signal.

This was last updated in March 2011

Continue Reading About HD downconverter (high-definition downconverter)

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

SearchSecurity

  • principle of least privilege (POLP)

    The principle of least privilege (POLP), an important concept in computer security, is the practice of limiting access rights for...

  • identity management (ID management)

    Identity management (ID management) is the organizational process for identifying, authenticating and authorizing individuals or ...

  • zero-day (computer)

    A zero-day vulnerability, also known as a computer zero day, is a flaw in software, hardware or firmware that is unknown to the ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity and disaster recovery (BCDR)

    Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

SearchStorage

  • SAS SSD (Serial-Attached SCSI solid-state drive)

    A SAS SSD (Serial-Attached SCSI solid-state drive) is a NAND flash-based storage or caching device designed to fit in the same ...

  • MTTR (mean time to repair)

    MTTR (mean time to repair) is the average time required to fix a failed component or device and return it to production status.

  • OpenStack Swift

    OpenStack Swift, also known as OpenStack Object Storage, is an open source object storage system that is licensed under the ...

SearchSolidStateStorage

  • hybrid hard disk drive (HDD)

    A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.

Close