| 摘要 |
In response to a positional relationship (distance, or a combination of distance and angle) between an information output unit and a user who uses information displayed in the display unit, a control unit changes the amount of information to be displayed in the display unit based on an information level, the number of pieces of information, a scrolling speed or a cycle. In some aspects, the control unit controls the information output unit to increase the amount of information to be output when the user is close to the display unit.
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