Title:
スプレッドスペクトルクロック生成器及びスプレッドスペクトルクロック信号を生成する方法
Document Type and Number:
Japanese Patent JP4880288
Kind Code:
B2
Abstract:
A spread spectrum clock generator (SSCG) and method of generating a spread spectrum clock (SSC) signal, in which the SSCG may include a controller outputting a given modulation voltage signal based on a difference between an average frequency of a first feedback signal and a comparison frequency signal input thereto, or based on comparison in total phase variations between a second feedback signal and the comparison frequency signal, and a sub-system for generating a first control voltage as a function of an input reference frequency signal and a second feedback signal input thereto. An adder may add the first control voltage signal and the modulation voltage signal to generate a second control voltage signal, and a voltage control oscillator (VCO) may generate the SSC signal based on the second control voltage signal.
Inventors:
Hot bell
Zhang
Money
Akiho Guo
Xuyuan
Source of money
Kim Hyun Wanted
Park Duke
Zhang
Money
Akiho Guo
Xuyuan
Source of money
Kim Hyun Wanted
Park Duke
Application Number:
JP2005323908A
Publication Date:
February 22, 2012
Filing Date:
November 08, 2005
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
H03L7/18; G06F1/04; H03K7/06; H03L7/087; H03L7/22
Domestic Patent References:
| JP11220386A | ||||
| JP2004289703A | ||||
| JP2004208037A |
Foreign References:
| US6046646 |
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro