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Invention Grant
CN104216211B 投影仪以及投影仪系统 失效 - 权利终止

投影仪以及投影仪系统
Abstract:
本发明的投影仪以给定的切换定时切换第一影像和第二影像而交替地输出该第一影像和第二影像，投影仪具有：放电灯；放电灯驱动部，向放电灯供给驱动放电灯的驱动电流；状态检测部，对放电灯的劣化状态进行检测；及控制部，对放电灯驱动部进行控制，被在时间上相邻的切换定时夹持的期间以第一期间开始，以第二期间结束，控制部按照使驱动电流的绝对值在第一期间内相对地较小并且在第二期间内相对地较大的方式对放电灯驱动部进行控制，控制部在第一期间内，按照将交流电流作为驱动电流向放电灯供给的方式对放电灯驱动部进行控制，并且伴随着劣化状态的发展，按照使驱动电流的至少一部分的频率变高的方式对放电灯驱动部进行控制。
Abstract(English):

A projector that outputs a first image and a second image alternately, includes a discharge lamp driving section that supplies, to a discharge lamp, a drive current that drives the discharge lamp; a state detecting section that detects a deteriorating state of the discharge lamp; and a control section that controls the discharge lamp driving section, wherein the control section controls the discharge lamp driving section so that the absolute value of the drive current becomes relatively small in the first period and relatively large in the second period and, in the second period, the control section controls the discharge lamp driving section so that the discharge lamp driving section supplies an alternating current to the discharge lamp as the drive current and controls the discharge lamp driving section so that at least part of the frequency of the drive current is decreased with the progress of the deteriorating state.

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