Wireless keyboard with improved radiation transmission

• US 6,967,835 B2
• Filed: 04/08/2003
• Issued: 11/22/2005
• Est. Priority Date: 04/08/2003
• Status: Expired due to Fees

• Current Assignee: Darfon Electronics Corporation
• Original Assignee: Darfon Electronics Corporation
• Inventors: Chiang, Chih-Hsiang
• Primary Examiner(s): Feild, Lynn
• Assistant Examiner(s): Edwards, Anthony Q.
• Application Number:
  US10/409,904
• Publication Number:
  US 20040201953A1
• Time in Patent Office: 959 Days
• Field of Search: 361/679, 361/680, 361/683, 361/684, 361/686, 342/53, 235/462.45, 235/462.46, 455/556.1, 455/556.2, 385/31, 385/32, 385/53, 385/66, 385/73, 385/74, 248/299.1, 398118-142, 439/445, 439/446, 439578-603
• US Class Current: 361/679.08
• CPC Class Codes: G06F 3/0202 Constructional details or processes of manufacture of the input device
• CPC Class Codes: G06F 3/0231 Cordless keyboards

Abstract

The invention relates to a wireless keyboard capable of operating with a radiation-based signal receiver of a computing apparatus. The wireless keyboard includes a radiation-based signal transmitter functions converting a corresponding key signal into a radiation beam and emitting the radiation beam. The wireless keyboard also includes a user-adjustable guiding device having a first end and a second end. The first end abuts on the radiation-based signal transmitter such that the radiation beam emitted by the radiation-based signal transmitter enters into the guiding device from the first end. The guiding device also leads the radiation beam out from the second end. The radiation beam, led out from the second end of the guiding device, has a covered zone. When the keyboard operates with the radiation-based signal receiver, the second end of the guiding device approaches the radiation-based signal receiver by adjusting the guiding device such that the radiation-based signal receiver is located in the covered zone of the radiation beam.

Claims

1. A first electronic device capable of communicating with a second electronic device via a radiation beam, said first electronic device comprising:

a housing;

a radiation-based signal transmitter, disposed on the housing, for emitting the radiation beam; and

a guiding device having a first end and a second end, the first end disposed on the housing and neighboring to the radiation-based signal transmitter such that the radiation beam emitted by the radiation-based signal transmitter enters into the guiding device from the first end, and substantially transmits along the longitudinal axis of the guiding device and out from the second end; and

a supporting stand disposed on the housing for supporting the second electronic device in a predetermined position, wherein the guiding device is adjustable so that the radiation beam, led out from the second end of the guiding device, transmits toward the second electronic device supported by the supporting stand.

2. The first electronic device of claim 1, wherein the guiding device comprises a flexible tube and a bundle of optical fibers wrapped by the flexible tube.