Naslov
Computer pointing device

Autori
Breyer, Branko ; Ferek-Petrić, Božidar

Broj patenta
US 5, 959, 612

Godina
1999

Datum patenta
28.09.1999.

Nositelj prava
Breyer, Branko ; Ferek-Petric, Bozidar, Zagreb, Hrvatska

Sažetak
A compact computer pointing device without moving parts detects the movement of objects, typically an operator's hand, in a detection area at a pre-selected height above the device. In an ultrasonic embodiment, the device includes two ultrasonic transmitter-receivers mounted at an appropriate position on the computer housing or keyboard. These transmitter-receivers use the Doppler effect to sense the vector velocity of objects moving in front of them. In an optical embodiment, the device consists of two optical emitters-receivers mounted at an appropriate position on the computer housing or keyboard. These emitter-receivers sense the vector velocity of objects moving in front of by cross-correlating the light reflected from the object with the incident light. In both the ultrasonic and the optical embodiment, the velocity vector thus determined is used to generate signals for corresponding movement of a pointer on the computer display. The device is particularly suited for compact computers in which space is limited.

Izvorni jezik
Engleski

Znanstvena područja
Računarstvo

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