Invention Grant
- Patent Title: USB system with spread spectrum EMI reduction
- Patent Title (中): USB系统具有扩频EMI降低功能
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Application No.: US11881416Application Date: 2007-07-27
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Publication No.: US07953175B2Publication Date: 2011-05-31
- Inventor: Dan Hariton , Narendar Venugopal , Duoc Nguyen , Santosh K. Panigrahi , Gautam K. Singh , Sushl Kumar
- Applicant: Dan Hariton , Narendar Venugopal , Duoc Nguyen , Santosh K. Panigrahi , Gautam K. Singh , Sushl Kumar
- Applicant Address: BM Hamilton
- Assignee: ON Semiconductor Trading, Ltd.
- Current Assignee: ON Semiconductor Trading, Ltd.
- Current Assignee Address: BM Hamilton
- Agent Kevin B. Jackson
- Main IPC: H04L27/00
- IPC: H04L27/00
Abstract:
A method for applying spread spectrum noise reduction techniques to USB specifically USB2.0 communications systems includes the step of generating a base (seed) frequency for the USB system, modulating the base (seed) frequency with a spread spectrum (SS) characteristic, and utilizing (as-is, not modified) the existing ASIC that multiplying the now modulated base (seed) frequency to generate the USB standard frequency signaling rate of 480 MHz with the SS characteristic within the USB standard specification for frequency deviation.
Public/Granted literature
- US20090028218A1 USB system with spread spectrum EMI reduction Public/Granted day:2009-01-29
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