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PWM nedir?
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2995 Mesaj
25 Şubat 2013; 21:30:25 
Bu mesajla ilgili şikayetinizi bu icon a tıklayarak yapabilirsiniz. Şikayet PM

Aşağıdaki linkte bir yazı var. Anladığım kadarı LED panellerde kullanılan ve yan etkisi kötü olan bir teknoloji. PWM iptal edilemiyor ama ortalama çözüm olarak hiç yoktan bir öneri var.

http://www.tftcentral.c...se_width_modulation.htm

Ekranınızdaki tüm otomatik ayarları kapatın (dinamik ayar vs.) ve parlaklığı sona getirin. Ondan sonra ekran kartınıznın parlaklık ayarını kullanın.
quote:


Reducing the Effects of PWM

If you find PWM backlight flickering distracting or just want to see if reducing it makes reading on a monitor easier, I'd encourage you to try the following: Turn the brightness of your monitor up to maximum and disable any automatic brightness adjustments. Now use the colour correction available in your video card drivers or calibration device to reduce the brightness to normal levels (usually by adjusting the contrast slider). This will reduce the luminance and contrast of your monitor while leaving the backlight on as much as possible during PWM cycles. While not a long-term solution for most due to the decreased contrast, this technique can help to discover if a reduction in PWM usage is helpful.

A much better method of course would be to purchase a display not relying on PWM for dimming, or at least one which uses a much higher cycling frequency. Sadly no manufacturers seem to have yet implemented PWM at frequencies that would limit visible artefacts (likely well above 500Hz for CCFL and above 2kHz for LED). Additionally, some displays using PWM do not use a 100% duty cycle even at full brightness, meaning they will always produce flicker. Several LED-based displays may in fact be currently available which do not use PWM, but until backlight frequency and modulation become listed in specifications it will be necessary to see the display in person.


mevzuyu bilenler belki daha detaylı açıklayacaktır.



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2102 Mesaj
26 Şubat 2013; 21:06:25 

ne gibi bi yan etkisi var ?
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