refresh rate

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refresh rate

(hardware)
(Or "vertical refresh rate", "vertical scan rate") The maximum number of frames that can be displayed on a monitor in a second, expressed in Hertz.

The scan rate is controlled by the vertical sync signal generated by the video controller, ordering the monitor to position the electron gun at the upper left corner of the raster, ready to paint another frame. It is limited by the monitor's maximum horizontal scan rate and the resolution, since higher resolution means more scan lines. Increasing the refresh rate decreases flickering, reducing eye strain, but few people notice any change above 60-72 Hz.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

refresh rate

(1) The number of times per second all the pixels on a display screen are re-energized. CRTs required constant refreshing to keep the phosphors activated even when there was no change in the image. Flat panels (LCD, OLED, plasma) have a maximum refresh rate in order to support motion in the range of 60 to 240 Hz. See pixel response time and vertical scan frequency.

(2) The number of times per second that a DRAM chip is re-energized. See dynamic RAM.
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References in periodicals archive ?
A sampling frequency of 5 kHz is used by the instrumentation system to collect the three current signals studied at 50 Hz, 65, and 100 Hz. The assays were done of a startup transient continued by a steady state conditions with constant load torques.
[26] also demonstrated the effect of EA by using similar protocol to Lee and Beitz, as low (4 Hz) or high (100 Hz) frequencies of EA were used to see the cellular activity of central catecholaminergic (CA) synthesizing neurons in the LC.
The aim of this study was to evaluate the effects of TENS at low (10 Hz) and high (100 Hz) frequencies on autonomic balance in healthy subjects.
To investigate the effect of different frequencies on the AlTiN coating a pulse-frequency range from 100 Hz to 500 Hz was used.
Early studies concluded that electrical stimulation at a low frequency (2 Hz) accelerates endorphin and encephalin production, whereas high-frequency stimulation (100 Hz) up-regulates dynorphin level.
With 40,000 counts, B&K Precision's Model 879B handheld LCR meter measures L, C, R, D, Q, [theta], and ESR at 100 Hz, 120 Hz, 1 kHz, and 10 kHz with a basic 0.5% accuracy.
Yet sensory cells do react to pressure waves with frequencies below 100 Hz, as revealed by the fact that such signals actually evoke detectable micromechanical responses in nerve cells in the inner ear, as LMU neurobiologists now report in the journal Royal Society Open Science.
The groups were divided into the placebo group (n = 10), the low-frequency TENS group (10 Hz, n = 9), and the high-frequency TENS group (100 Hz, n = 10).
Although microseismic events may have lower SNR at high frequencies (above 100 Hz) we may still detect them if they have sufficient SNR at lower frequencies.
Its extensive feature set boosts state-of-the-art digital control technology and can deliver up to 300 VAC at output frequencies ranging from 30 Hz to 100 Hz. The AC+DC feature allows for applications that require a DC offset bias.