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| Last position memory ： ウィキペディア英語版 |
Last position memory
Last-position memory is a feature that allows media playback devices to continue from where a user pauses the playback, or after powering off the device.
==Early methods==
Last-position memory dates back to the days of magnetic tape-based media. For instance, open-reel tapes and cassette tapes automatically have this property since they automatically stay where they are when paused or stopped. Indeed, tape-based media can be started and stopped and left at any point, and moved to any point, the only problem being that the further the point one wishes to move to in a recording, the longer it takes to get there. It is easy to go back and listen again to the last few seconds of a tape recording, e.g. to listen to something one could not hear properly. Some tapes such as 8-track tapes couldn't be re-wound, seeing as "looped" with a solenoid that shifted the tape to a spool aside of its endless loop.
Other early methods of "last-position memory" sometimes involved a user having to manually jot down a timecode of a program, such as a movie they were watching, in order to know where to continue from. Early DVD players didn't have last-position memory, and they also suffered from always starting back at the beginning after a disc had been ejected.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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