Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/415

Free-forming one-way network

Authors Cue, Nelson
Lee, Che-kin
Tam, Wing-Yim
Issue Date 2001-09-11
Source US Patent , 6,289,222. Washington, DC: US Patent and Trademark Office, 2001.
Summary A one-way or single-channel communication network utilizing electromagnetic radiation signals of a fixed single or narrow-band frequency in free air space consists of a plurality of transmitters and a central receiver in which each message is encoded in a wave train and is tagged with a sender identity (ID). The central receiver, which can be a single unit or a plurality of units connected in cascade, detects the messages in the free air space and send them along to a central processing unit (CPU) for message handling. Possible additional features of the system are: an option of a small display panel on the individual transmitter to show the message to be sent plus the number of attempts a message was sent within a preset time; a separate feedback segment, such as a colour change of a characteristic symbol on a central display screen visible to the sender, providing a confirmation that the message has been received; each symbol on the display screen showing the number of times a message was received from the corresponding transmitter within a present time; and a built-in option to either retain or black out the ID tag on the messages to be processed by the CPU. The free forming aspect of the system stems from the portability of the ID-encoded transmitters which enables any combination of transmitters to form a communication network, and a plurality of such combinations to form a plurality of networks.
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Language English
Format Patent
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