Communications: electrical – Tactual indication
Patent
1997-01-31
1999-08-10
Swarthout, Brent A.
Communications: electrical
Tactual indication
34082546, H04B 336
Patent
active
059365161
ABSTRACT:
A vibrating apparatus (200) comprises a vibrating element (202), electromagnetic coils (204, 206), driver circuits (210, 212), and a controller (208) coupled to the electromagnetic coils (204, 206) through driver circuits (210, 212). The vibrating element (202) has a first end fixedly mounted to a housing (106) and a second end having a permanent magnet (216) attached thereto. The electromagnetic coil (204) is positioned adjacent to the permanent magnet (216), and the electromagnetic coil (206) is positioned adjacent to the permanent magnet (216) on a side opposite the electromagnetic coil (204). The controller (208) generates signals to the electromagnetic coils (204, 206) through the driver circuits (210, 212) for producing magnetic fields around the electromagnetic coils (204, 206), where the magnetic fields attract and repel the permanent magnet (216) such that the vibrating element (202) vibrates at its resonating frequency.
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Narea Jaime
Przybylski Daniel
Clark Richard K.
Motorola Inc.
Oskorep John J.
Swarthout Brent A.
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