Pulse width modulation frequency conversion
作者： Andrew M. Kameya , Victor K. Lee , Bin Zhao
DOI:
关键词:
摘要: A pulse width modulation (PWM) frequency converter (100) converts an input PWM signal to output having a different while maintaining substantially equal duty ratio. The samples the for cycle using sampling clock (112). filter module (108) filters resulting set of one or more parameters compensate noise introduced by potential mismatch, jitter, ambient variations, and other non-deterministic issues, thereby generating filtered parameters. employed compares difference between current previous (or historical) from earlier sampled predetermined change threshold in determining then is used generate corresponding cycles signal.
lens.org 参考文章(56)
Kwok D. Hu, Robert W. Bloemer, Ring transmission network for interfacing control functions between master and slave devices ,(1984)
Adam J. Whitworth, Hassan B. Shami, Automatic voltage selection for series driven leds ,(2006)
Franky So, Chengping Wei, Michael P. Norman, Pre-charge driver for light emitting devices and method ,(1996)
Ham-Huah Hsu, Circuit and method for pulse width modulation ,(2004)
Bin Zhao, Phase-shifted pulse width modulation signal generation ,(2009)
Chun-Lung Chiu, Wen-Shi Huang, PWM buffer circuit for adjusting a frequency and a duty cycle of a PWM signal ,(2007)
Seijun Nishimura, Toshiya Fujiyama, Satoru Ito, LED-switching controller and LED-switching control method ,(2004)
Vladimir Alexander Muratov, Stefan Wlodzimierz Wiktor, Distributing clock and programming phase shift in multiphase parallelable converters ,(2003)
Da Liu, Yung-Lin Lin, Controller circuitry for light emitting diodes ,(2005)
Gregory J. Dygert, Method and apparatus for controlling light emitting diodes ,(2003)