专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4358792A Precision screen elevating and control means for a projection television receiver 失效
标题翻译：用于投影电视接收机的精密屏幕提升和控制装置
公开(公告)号：US4358792A
公开(公告)日：1982-11-09
申请号：US235059
申请日：1981-02-17
申请人： James D. Domoleczny , Raymond D. Y. Loh , Hans E. Manske , Joseph N. Marchese , Carl A. Michelotti
发明人： James D. Domoleczny , Raymond D. Y. Loh , Hans E. Manske , Joseph N. Marchese , Carl A. Michelotti
IPC分类号： H04N5/74 , H04N5/64
CPC分类号： H04N9/3141 , H04N2005/7483
摘要： An ultra-compact projection television receiver is disclosed comprising in combination cabinet means for enclosing the receiver components including a vertically reciprocable, rear projection viewing screen selectively storable in the cabinet. Precision elevating means provides for raising and lowering the screen between a stored position in the cabinet and a receiver-operable viewing wherein the screen is emerged. A television system has an ON control mode for providing television sound and pictures and an OFF control mode. Control means coupled to the elevating means and the television system provide for sensing the position of the screen in its reciprocation, and obstructions to said reciprocation manifested by increased resistance to said reciprocation, and correlatively controlling the elevating means and the OFF/ON control modes of the television system in response thereto. The control means are programmed to cause the screen to rise smoothly to its raised position without an abrupt stop and pictures to appear and sound to be heard the instant the raised position is attained. Safety is enhanced as obstructions to screen reciprocation are sensed and the reciprocation is stopped. The receiver is caused to automatically place the television system in the OFF mode when the screen is stored.
摘要翻译：公开了一种超紧凑型投影电视接收机，其包括用于封闭接收器组件的组合柜装置，包括可选择性地存储在机柜中的可垂直往复运动的后投影观察屏幕。精密提升装置用于在橱柜的存储位置和出现屏幕的接收器可操作的观看之间提升和降低屏幕。电视系统具有用于提供电视声音和图像的ON控制模式以及OFF控制模式。耦合到提升装置和电视系统的控制装置提供用于感测屏幕在其往复运动中的位置，以及阻碍所述往复运动的障碍，这表现为对所述往复运动的增加的阻力表现，并且相关地控制升降装置和OFF / ON控制模式电视系统响应于此。控制装置被编程为使得屏幕平滑地升高到其升高位置，而不会突然停止，并且在达到升高位置的瞬间出现图像并听到声音。当检测到屏障往复运动的障碍物并且停止往复运动时，安全性得到增强。当存储屏幕时，使接收机自动将电视机置于OFF模式。

IPRDB

热门服务

关于我们

友情链接

联系方式