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Zap time The zap time is the total duration of time from which the viewer changes the channel using a remote control to the point that the picture of the new channel is displayed. This includes the corresponding audio. These delays exist in all television systems, but they are more pronounced in digital television and systems that use the internet such as IPTV. Human interaction with the system is completely ignored in these measurements, so zap time is not the same as channel surfing. Zap time can be very disturbing for some viewers and for this reason it is considered an issue that must be addressed in IPTV systems.〔IPTV over DSL systems. "(''IPTV testing over DSL'' )"〕 ==Factors== The delays when changing the channel can be caused by several different factors. These factors can be classified according to the systems that cause them. Consequently, there are network factors, MPEG acquisition factors, and set top box buffering/decode factors.〔IPTV challenges and metrics. "(''IPTV Challenges'' )"〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Zap time」の詳細全文を読む
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