公开(公告)号：US5475741A

公开(公告)日：1995-12-12

申请号：US254394

申请日：1994-06-06

申请人： William R. Davis ,  Dennis W. Mowers ,  Richard P. Greenthal ,  Paul Szymanski ,  Ronald A. Wray ,  Richard A. Davidson

发明人： William R. Davis ,  Dennis W. Mowers ,  Richard P. Greenthal ,  Paul Szymanski ,  Ronald A. Wray ,  Richard A. Davidson

IPC分类号： G09F9/35 ,  G09G3/36 ,  H04M11/00

CPC分类号： G09F9/35 ,  G09G3/36 ,  G02F1/13306 ,  G02F2203/60 ,  G09G2320/041

摘要： This system is for use by a visitor to a facility that has multiple occupants, public-subscriber or other phone service, and an individual phone outlet at each occupant's part of the facility. A microphone and speaker are provided so that a visitor seeking access can speak with an occupant. A communication circuit carries signals between (1) the mike and speaker and (2) the phone service--to enable the conversation through an individual phone outlet. Manual controls, preferably including a standard phone keypad, are positioned for use by the visitor. An electronic memory holds directory information, particularly including occupant names and corresponding dial-up codes. An LCD, behind a protective window, shows the visitor the directory data. Names and other directory data can be fed into the memory remotely, preferably through either: ordinary phone connections using standard DTMF signals--with automated confirmation of input data by a voice-synthesis chip--or a modem. Data can also be input through a separate local hand-held programing device, or a local computer communication port. The phone circuit, even when in use for visitor-occupant conversation, can be used for the remote input. The visitor selects an occupant by finding a name in the display and then dialing that occupant's code. A microprocessor reads the data from the memory, responds to the controls, and manages: the LCD to exhibit the data, the sequence of data exhibition, the circuit to initiate communication via the phone service, etc.

摘要翻译： 该系统供访客使用，具有多个乘客，公共订户或其他电话服务的设施，以及每个乘客的设施部分的个人电话插座。 提供麦克风和扬声器，使得访问者可以与乘客说话。 通信电路在（1）麦克风和扬声器之间传送信号，（2）电话服务 - 通过个人电话插座实现对话。 手动控制，最好包括一个标准的电话键盘，供访客使用。 电子存储器保存目录信息，特别是包括占用者姓名和相应的拨号代码。 保护窗后面的一个LCD显示访客的目录数据。 名称和其他目录数据可以远程地馈送到存储器中，优选地通过以下两者之一：使用标准DTMF信号的普通电话连接 - 通过语音合成芯片或调制解调器自动确认输入数据。 也可以通过单独的本地手持编程设备或本地计算机通信端口输入数据。 手机电路即使在进行访问者占用对话时也可用于远程输入。 访客通过在显示屏中找到一个名字，然后拨打该乘客的代码来选择一个乘客。 微处理器从存储器读取数据，响应控制，并管理：LCD显示数据，数据展示顺序，通过电话服务发起通信的电路等。

公开(公告)号：US5416495A

公开(公告)日：1995-05-16

申请号：US985017

申请日：1992-12-04

申请人： William R. Davis ,  John F. Ahlstrom ,  Richard P. Greenthal

发明人： William R. Davis ,  John F. Ahlstrom ,  Richard P. Greenthal

IPC分类号： G09F9/35 ,  G09G3/36

CPC分类号： G09F9/35 ,  G09G3/36 ,  G02F1/13306 ,  G02F2203/60 ,  G09G2320/041

摘要： A liquid-crystal display preferably eighteen lines of forty characters each, is mounted in a case. The temperature of the display medium is held within operating limits for the display--notwithstanding ambient temperature and humidity variations over generally normal ranges for at least the temperate zones, and even if the display unit receives direct sunlight. The unit works outdoors, at temperatures to at least 46.degree. C. (115.degree. F.) as well as in buildings with no temperature control. This is accomplished by use of a shading hood, and a window (preferably unperforated polycarbonate, curved, upward-and-outward-concave, and cylindrical-segment) that reflects to a viewer only light from the hood underside. No ventilating fan, plenum or other ventilating opening is needed. A circuit-board-mounted temperature sensor controls the contrast-adjusting voltage of the display--using data in a digital-memory "look up" table. A heater is preferably provided, also temperature-controlled. The entire unit can be flush-mounted in a wall without disrupting operation. Visible glare arising in reflection at the window is reduced by the hood-and-window combination, without need for any antireflection coating on the window.

摘要翻译： 液晶显示器优选地安装在壳体中，每个具有四十个字符的十八行。 显示介质的温度保持在显示器的操作限度内 - 尽管在至少温带区域的大致正常范围内的环境温度和湿度变化，并且即使显示单元接收直接的阳光。 该设备在室外工作，温度至少为46℃（115°F）以及没有温度控制的建筑物。 这通过使用遮光罩和窗户（优选未穿孔聚碳酸酯，弯曲，向上和向外 - 凹入和圆柱形部分）来实现，其仅向来自观察者的观察者反射来自罩下侧的光。 不需要通风扇，增压室或其他通风口。 电路板安装的温度传感器控制数字存储器“查找”表中的显示器使用数据的对比度调节电压。 优选地设置加热器，也是温度控制的。 整个单元可以嵌入式安装在墙壁上，而不会中断操作。 通过遮光罩和窗户组合可以减少在窗户反射中产生的可见眩光，而不需要窗口上的任何抗反射涂层。