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1. 发明授权

US4422067A Dynamic self-checking safety circuit means 失效
标题翻译：动态自检安全电路手段
公开(公告)号：US4422067A
公开(公告)日：1983-12-20
申请号：US308703
申请日：1981-10-05
申请人： Rodney L. Clark , William R. Landis , Paul B. Patton , Charles B. Yancey
发明人： Rodney L. Clark , William R. Landis , Paul B. Patton , Charles B. Yancey
IPC分类号： G05F1/66 , G08B29/16 , G08B29/00
CPC分类号： G08B29/16
摘要： A safety circuit which connects a condition responsive circuit to a cyclic signal detecting circuit. In order to provide the cyclic signal detecting circuit with a continuous cyclic input, the condition responsive circuit and a cyclic redundancy checker is provided. The cyclic redundancy checker identifies a specific series of logic bits from the condition responsive circuit and responds favorably only to that series of logic bits. If any other series of logic bits occurs, the cyclic redundancy checker of the system ceases to function, thereby causing the cyclic signal detecting circuit to cease to function and it in turn opens a series contact to deenergize a critical load in a control system.
摘要翻译：一种将条件响应电路连接到循环信号检测电路的安全电路。为了提供具有连续循环输入的循环信号检测电路，提供了条件响应电路和循环冗余校验器。循环冗余校验器从条件响应电路识别特定系列的逻辑位，并且仅对该系列逻辑位有利地响应。如果出现任何其他系列的逻辑位，则系统的循环冗余校验器将停止工作，从而使循环信号检测电路停止工作，并且继而打开串联触点以使控制系统中的临界负载消弧。

2. 发明授权

US4072825A Hotel/motel automatic control system 失效
公开(公告)号：US4072825A
公开(公告)日：1978-02-07
申请号：US701430
申请日：1976-06-30
申请人： Gerald M. McLay , Calvin D. Houdek , Charles B. Yancey
发明人： Gerald M. McLay , Calvin D. Houdek , Charles B. Yancey
IPC分类号： H04M3/537 , H04M11/00 , H04M3/42 , H04Q3/54
CPC分类号： H04M11/00 , H04M3/537
摘要： A microprocessor control system for monitoring and controlling a plurality of different parameters or features of a large number of like-kind entities, each characterized by such parameters or features. The control system is particularly suitable for automatically controlling on an indiviudal room basis, parameters within hotels/motels such as: counting the number of outgoing calls, paging guests having messages and controlling room message waiting indicators, placing wake-up calls to guest rooms at predesired wake-up times, and tracking in real-time the housekeeping and occupancy status of each hotel/motel room. Incidentally to the room status feature, telephone sets within unoccupied rooms or within rooms being cleaned are automatically disabled from registering outgoing calls, but may be used for registering emergency calls. All control functions are performed by a microprocessor under hardwire program or firmware command. Each room has identified therewith in the control system a plurality of identifiable Feature circuits addressable by and responsive to commands by the microprocessor for interfacing with the respective telephone set circuits servicing that room. The microprocessor and Feature circuits interface with pre-existing telephone equipment within the hotel/motel at the site of the central telephone control circuit bay within the hotel/motel, requiring no additional wiring to or any new circuit installations within the hotel/motel rooms. Hotel/motel personnel and the control system communicate with one another by means of a plurality of personalized desk consoles, by means of a plurality of room status and message waiting display scanners strategically located throughout the hotel/motel, and by means of a printer. The room status and message waiting scanners sequentially display those room numbers currently requiring maid or housekeeping service, or for which a message is waiting, respectively. The printer provides, under microprocessor control, a hard-copy record of all console and many feature processing functions of the control system.

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