# US 7,744,238 B2 · Input device having multi-stage indicating lamp

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- Number: US 7,744,238 B2
- Document ID: US7744238B2
- Status: Granted
- Kind: B2
- Application number: 12/236,119
- Filed: 2008-09-23
- Published: 2009-12-24
- Granted: 2010-06-29
- Earliest claimed: 2008-06-20
- Assignees: Primax Electronics Ltd.
- Inventors: A-Ming Chang; Chou-Liang Liu; Chih-Wen Su; Chien-Pang Chien; Ying-Che Tseng
- Web page: https://patentgrep.com/patent/US7744238B2

## CPC

- G06F 3/0317: {in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

The present invention relates to an input device having a multi-stage indicating lamp. The input device includes a case and an electronic lighting module. The electronic lighting module includes a printed circuit board, a first electronic lighting element, a second electronic lighting element, a light guide post member, a light-shielding member, a lamp cover and a button. By means of the light guide post member and the light-shielding member, the possibility of scattering the light beams is reduced.

## Claims

### Claim 1

An input device having a multi-stage indicating lamp, said input device comprising:
a case having a plurality of case perforations and multiple case ribs, wherein each case rib is arranged between two adjacent case perforations; and
an electronic lighting module for providing different light signals, and comprising:
a printed circuit board having a board hole;
a first electronic lighting element arranged on said printed circuit board for emitting first light beams;
a second electronic lighting element arranged on said printed circuit board for emitting second light beams;
a light guide member comprising a light guide platform, multiple upper light guide posts for guiding said first and second light beams, and multiple lower light guide posts for guiding said first and second light beams, wherein said upper light guide posts are inserted into corresponding case perforations such that said case ribs are embedded into corresponding gaps between adjacent upper light guide posts, and the number of said upper light guide posts is the same as the number of said lower light guide posts; and
a light-shielding member arranged between said light guide member and said printed circuit board and comprising multiple channels and a light-shielding rib, wherein said lower light guide posts are inserted into corresponding channels, and said light-shielding rib is received in said board hole.

### Claim 2 (depends on 1)

The input device having a multi-stage indicating lamp according to claim 1 wherein said light guide platform further comprises multiple light guide holes, each of said light guide holes being arranged between two adjacent upper light guide posts.

### Claim 3 (depends on 2)

The input device having a multi-stage indicating lamp according to claim 2 wherein multiple upper light-shielding ribs are formed on an upper surface of said light-shielding member, each of said upper light-shielding ribs being arranged between two adjacent channels.

### Claim 4 (depends on 1)

The input device having a multi-stage indicating lamp according to claim 1 further comprising a lamp cover, which is disposed on a surface of said case, for sheltering said case perforations.

### Claim 5 (depends on 1)

The input device having a multi-stage indicating lamp according to claim 1 further comprising a button, which is disposed on a surface of said case, wherein a mode-switching signal is generated when said button is pressed down by a user.

### Claim 6 (depends on 5)

The input device having a multi-stage indicating lamp according to claim 5 further comprising a control unit, which is mounted on said printed circuit board and receives said mode-switching signal, wherein said control unit controls said first electronic lighting element to individually emit said first light beams, said second electronic lighting element to individually emit said second light beams or said first and second electronic lighting elements to simultaneously emit said first light beams according to said mode-switching signal.

### Claim 7 (depends on 1)

The input device having a multi-stage indicating lamp according to claim 1 wherein said input device is a mouse.

### Claim 8 (depends on 1)

The input device having a multi-stage indicating lamp according to claim 1 wherein said first electronic lighting element is a light emitting diode (LED).

### Claim 9 (depends on 1)

The input device having a multi-stage indicating lamp according to claim 1 wherein said second electronic lighting element is a light emitting diode (LED).