ringtone
Definition:
A ringtone is a sound or music clip that replaces the standard ring sound on a mobile phone. Many mobile phones can have multiple ringtones which allows you to associate specific ringtones with specific callers in your mobile phone contact list. Ringtones can be purchased over the Internet and downloaded to your mobile phone or in some cases, ringtones can be purchased directly from your mobile phone.
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progressive scan
Progessive scan is a method for "painting" a video signal by displaying video lines sequentially (progressively) from top to bottom. This is in contrast to the alternating odd/even method used with an
interlaced signal. Progressive scan signals are considered superior to interlaces signals due to their scalability for high definition displays and the absence of quirks sometimes associated with interlaced signals.
