Patent ID: 6927760
Filing Date: 2005-08-09
Classification: G06F

Abstract:
1. A keyboard capable of operating with a radiation-based signal receiver of a portable computing apparatus, the radiation-based signal receiver being set on or near a top side of the portable computing apparatus, said keyboard comprising: a housing having an accommodating room; a user input device mounted in the housing, the user input device comprising a plurality of user-operable keys; a processor for generating a corresponding key signal responsive to key-in of one of the keys; a radiation-based signal transmitter for converting the corresponding key signal into a radiation beam and emitting the radiation beam, the radiation beam having a covered zone; a user-adjustable engaging device having a first end engaging with the housing and a second end where the radiation-based signal transmitter is fixed, the engaging device accompanying with the radiation-based signal transmitter being capable of being accommodated into the accommodating room; and wherein when the keyboard and the portable computing apparatus, set upright, are substantially positioned in co-planar, the radiation-based signal transmitter is capable of being lifted higher than the top side of the portable computing apparatus by adjusting the engaging device, and when the keyboard operates with the radiation-based signal receiver, the radiation-based signal transmitter approaches the radiation-based signal receiver by adjusting the engaging device such that the radiation-based signal receiver is located in the covered zone of the radiation beam.