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    • 5. 发明授权
    • Alarm device
    • 报警装置
    • US08305209B2
    • 2012-11-06
    • US12629292
    • 2009-12-02
    • Hidesato MoritaMakoto MasuyamaToshimitsu Watanabe
    • Hidesato MoritaMakoto MasuyamaToshimitsu Watanabe
    • G08B1/00
    • G08B17/00G08B25/10
    • Provided is an alarm device capable of performing transmission and reception reliably while suppressing an amount of current consumption. An alarm device (100) includes: a fire detection circuit (7); a control circuit (1); and a transmitting/receiving circuit (5). The transmitting/receiving circuit (5) transmits the status signal to the another alarm device (100) with a transmission pattern formed by combining transmission periods and transmission suspension periods a predetermined number of times, and receives the status signal transmitted by the another alarm device (100) in an intermittent reception cycle. A time length of each of the transmission periods and the transmission suspension periods is set so that the another alarm device (100) that has failed to receive the status signal transmitted in a first intermittent reception cycle can receive the status signal in a second intermittent reception cycle and subsequent intermittent reception cycles.
    • 提供能够在抑制电流消耗量的同时可靠地进行发送接收的报警装置。 报警装置(100)包括:火灾检测电路(7); 控制电路(1); 和发送/接收电路(5)。 发送/接收电路(5)通过将发送周期和发送暂停时段组合预定次数而形成的发送模式将状态信号发送到另一个报警装置(100),并且接收另一个报警装置发送的状态信号 (100)处于间歇接收周期。 设定发送期间和发送暂停期间的时间长度,使得在第一间歇接收周期中发送的状态信号未能接收的另一报警装置(100)能够在第二间歇接收中接收到状态信号 周期和随后的间歇接收周期。
    • 7. 发明申请
    • PROJECTOR
    • 投影机
    • US20100225888A1
    • 2010-09-09
    • US12711396
    • 2010-02-24
    • Toshimitsu Watanabe
    • Toshimitsu Watanabe
    • G03B21/16
    • G03B21/16
    • A projector configured to modulate a luminous flux emitted from a light source in accordance with image information, forms an image light, and projects the image light, includes: an exterior housing having an intake vent for taking in the ambient air, and an insertion slot communicating with the intake vent; an anti-dust filter being installed in the exterior housing so as to be mountable in and removable from the exterior housing through the insertion slot, prevents dust from intruding into the exterior housing from the intake vent; and a cover configured so as to be switchable between an open condition in which it exposes the insertion slot, and a closed condition in which it covers the insertion slot.
    • 一种投影仪,配置成根据图像信息调制从光源发出的光束,形成图像光并投影图像光,包括:外部壳体,具有用于吸入环境空气的进气口和插入槽 与进气口连通; 防尘过滤器安装在外壳中,以便通过插入口安装在外壳中并从外壳移除,防止灰尘从进气口进入外壳; 以及被构造成能够在其暴露于插入口的打开状态之间切换的盖以及覆盖插入槽的封闭状态。