Back to results
US 2004/0001047 A1Published application
Wireless PDA keyboard
OwnerSen-Cheng Wanginventor
Life of this patent
Estimating the term…
Abstract
A wireless PDA keyboard includes a keyboard set, a control circuitry, an infrared transmitter, a battery set and a holding stand. The keyboard set is pressed to generate signals to the control circuitry that converts the signals and transmits keyboard data to PDAs with infrared transmitter, the existing PDAs infrared receiver can receive data accordingly; the direction of the infrared transmitter on the keyboard can be adjusted to fit all the PDAs with different specifications.
Claims3
A wireless PDA keyboard comprising:
- a keyboard set;
- an infrared transmitter transmitting data to PDAs;
- a control circuitry converting the signals from said keyboard set into said infrared transmitter;
- a battery set for offering the power;
- a holding stand having a angle adjustable revolving arm with a side housing that contains said infrared transmitter;
- wherein said infrared transmitter is installed inside said side housing of said revolving arm on back side of said holding stand;
- by adjusting the direction of said revolving arm, said infrared transmitter faces a corresponding infrared receiver of PDAs.
4 more elements
Dependencies are inferred from the claim text.