Invention Grant
- Patent Title: LED current ramping method for optical mouse
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Application No.: US15382750Application Date: 2016-12-19
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Publication No.: US10042434B2Publication Date: 2018-08-07
- Inventor: Kwai Lee Pang
- Applicant: PixArt Imaging (Penang) SDN. BHD.
- Applicant Address: MY Penang
- Assignee: PixArt Imaging (Penang) SDN. BHD.
- Current Assignee: PixArt Imaging (Penang) SDN. BHD.
- Current Assignee Address: MY Penang
- Agent Winston Hsu
- Main IPC: G09G5/00
- IPC: G09G5/00 ; G06F3/03 ; G09G3/32 ; G06F1/32
Abstract:
An LED current ramping method for an optical mouse includes: determining a speed of the optical mouse; setting control bits according to the determined speed; sending the control bits to a digital circuit of the mouse; and decoding the control bits to selectively open and close switches in a constant current LED driver of the mouse to adjust a current according to the speed.
Public/Granted literature
- US20180173324A1 LED CURRENT RAMPING METHOD FOR OPTICAL MOUSE Public/Granted day:2018-06-21
Information query
