Keyboard with optical cursor control device
AssigneePrimax Electronics Ltd.
InventorsChin-Kuan Lou, Chih-Wen Su
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Abstract
The present invention relates to a keyboard with an optical cursor control device. The keyboard includes a plurality of keys and the optical cursor control device. These keys contain a space bar. The optical cursor control device may generate a cursor control signal by sensing movement of a user's finger. The optical cursor control device is arranged in the vicinity of the space bar. As a result, the user can operate the optical cursor control device without the need of considerably changing the hand gesture.
Claims6
A keyboard with an optical cursor control device, said keyboard comprising:
- a plurality of keys depressed to input corresponding characters or signs, wherein said plurality of keys contain a space bar and the remainder keys;
- and
- said optical cursor control device arranged in the vicinity of said space bar for generating a cursor control signal by sensing movement of a user's finger, said optical cursor control device comprising:
- a light source for emitting light beams;
- an optical member for reflecting said light beams to said user's finger and focusing said light beams reflected by said user's finger;
- a sensor for receiving said focused light beams and generating said cursor control signal according to said focused light beams;
- and
- an upper cover sheltering said optical member and having a light-penetrable transparent portion, wherein said upper cover is exposed to a surface of said keyboard for allowing said user's finger to be placed thereon.
A keyboard with an optical cursor control device, said keyboard comprising:
- a plurality of keys depressed to input corresponding characters or signs, wherein said plurality of keys contain two space bars;
- and
- said optical cursor control device arranged between said two space bars for generating a cursor control signal by sensing movement of a user's finger, said optical cursor control device comprising:
- a light source for emitting light beams;
- an optical member for reflecting said light beams to said user's finger and focusing said light beams reflected by said user's finger;
- a sensor for receiving said focused light beams and generating said cursor control signal according to said focused light beams;
- and
- an upper cover sheltering said optical member and having a light-penetrable transparent portion, wherein said upper cover is exposed to a surface of said keyboard for allowing said user's finger to be placed thereon.
Dependencies are inferred from the claim text.