Wireless add-on keyboard system and method

Details Wireless add-on keyboard system and method Wireless add-on keyboard system and method

1999-02-25

2000-10-17

Tong, Nina

Communications: electrical

Condition responsive indicating system

Specific condition

34082556, 341 20, 341 22, 341 26, 341173, 345168, 345172, G08B 1314

Patent

active

061338338

ABSTRACT:
A wireless keyboard or keypad (22) is powered remotely by a radio frequency exciter/receiver (20) and used in a radio frequency identification system (10). The wireless keyboard and the exciter/receiver communicate without wires via electrostatic or electromagnetic radiation. No power source is integrated with the wireless keypad. Thus, the wireless keypad is readily added to, or retrofit into, an existing radio frequency identification system. The keyboard has a plurality of keys (24) or control members that are manually actuated. Depression of a key or button, or other actuation of a control member, causes a predetermined response signal associated with that key to be generated. The response signal relates to an operation for a device or system associated with the exciter/receiver.

REFERENCES:
patent: 5009227 (1991-04-01), Nieuwstad
patent: 5406273 (1995-04-01), Nishida et al.
patent: 5859599 (1999-01-01), Shiga
patent: 5861822 (1999-01-01), Park et al.
patent: 5870033 (1999-02-01), Strolo
patent: 5920308 (1999-07-01), Kim
patent: 5925110 (1999-07-01), Klein
patent: 5949335 (1999-09-01), Maynard
patent: 5955975 (1999-09-01), Frederick et al.
patent: 5977886 (1999-11-01), Barile et al.

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