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1. 发明授权

US3854131A Auto-monitoring communication devices for handicapped persons 失效
公开(公告)号：US3854131A
公开(公告)日：1974-12-10
申请号：US35346273
申请日：1973-04-23
申请人： LAMERS D , VANDERHEIDEN G , VOLK A , GEISLER C
发明人： GEISLER C , VOLK A , VANDERHEIDEN G , LAMERS D
IPC分类号： B41J7/00 , G06F3/00 , G06F3/01 , G06F3/033 , G09B21/00 , H03M11/00
CPC分类号： G06F3/016 , B41J7/005 , G06F3/033 , G06F3/04842 , G09B21/00 , H03M11/00
摘要： A communication device is provided for handicapped persons, such as persons suffering from cerebral palsy who are unable to speak, write, or operate a typewriter. The device comprises a board or panel having a matrix of communication elements thereon, such as letters, numerals, symbols, words and the like. A corresponding matrix of sensors is mounted under the board. The handicapped person operates a slider or cursor which is movable on the surface of the panel. Each sensor is sensitive to the proximity of the cursor and is operable by an element of the cursor when such element is moved opposite the communication element which corresponds to the sensor. For example, the cursor may carry a permanent magnet for operating the sensors, which may be in the form of reed switches. Many other types of sensors and cursors may be employed. When the magnet or other operating element of the cursor is moved over a particular communication element, the corresponding sensor is operated. The sensors are connected to control circuits which preferably operate a red light or other signal to show that one of the sensors has been operated. After the sensor remains operated for a predetermined interval, the control circuits generate a print command signal which causes a character to be printed, corresponding to the communication element which is associated with the sensor. The character may be printed by either a hard copy printer or a video display, or both. The control circuits preferably actuate a green light or some other print signal which indicates that the communication element has been printed. The delay in the printing of the communication element makes it possible for the handicapped person to move the cursor over the surface of the panel without causing any character to be printed until the cursor is brought to rest or caused to hover in proximity to one of the communication elements for a predetermined time interval. Thus, the device prints the communication element in response to cessation of movement of the cursor rather than movement thereof.

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