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Home Theater Glossary: U

universal remote controls: Remote control devices used in a home theater that are supposed to work with any electronics device via onboard code databases. Some programmable remotes allow you to create macros that perform multiple tasks at one time.

upconversion: A scaling of the resolution of a video signal to a higher resolution. This process can occur inside a DVD or Blu-ray disc player, an A/V receiver, or an HDTV. For example, an A/V receiver with upconversion takes lower-resolution video input (such as composite or S-video) and converts it to a higher-resolution format (such as component video or HDMI).

USB: An acronym for Universal Serial Bus. USB is a serial bus standard that allows you to connect peripheral devices to a computer.

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