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In video games, input lag is either the delay between the television or monitor receiving a signal and it being displayed on the screen〔http://www.flatpanelshd.com/focus.php?subaction=showfull&id=1229335064〕 (see display lag below), or the delay between pressing a button and seeing the game react.〔http://www.anandtech.com/show/2803〕 In electronic hardware development, input lag is the delay between an electronic input signal being generated (pressing a button as above) and processed (IO ports have been read, and memory updated to reflect the state of the input). In this field, the phenomena detailed below, are referred to as Output Lag. More formally, the terms 'Input Latency' and 'Output Latency' are also used. Due to gamers being largely unaware of the phenomena of input lag at this low level, the terms input lag and output lag became confused over time, and the above description, where input and output lag are combined into a singular phenomena known as input lag, has become popular. Overall, the correct terminology is clear - A delay between a physical input occurring (e.g., I/O pin voltage change) and it being processed electronically (I/O pins read by processor and memory registers updated to reflect the state of the pins) is input lag, and a delay between an electronic output being sent (e.g., memory register set to reflect the desired state of an output) and it being processed into a physically observable phenomena (e.g., memory register read and I/O pin voltage modified accordingly), is output lag. In short, Input Lag occurs on input devices, Output Lag occurs on output devices. The following are descriptions based on the colloquial use of the term, as used by gamers. ==Potential causes of delay from pressing a button to the game reacting== The potential causes for "input lag"- according to the second definition- are described below (steps which have negligible contributions to the input lag have been omitted). Each step in the process increases "input lag", however the net result may be unnoticeable if the overall "input lag" is low enough. 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「Input lag」の詳細全文を読む スポンサード リンク
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