preemphasis

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preemphasis

[prē′em·fə·səs]
(electronics)
A process which increases the magnitude of some frequency components with respect to the magnitude of others to reduce the effects of noise introduced in subsequent parts of the system.
References in periodicals archive ?
Although there are pre-emphasis and equalization techniques to recover the eye diagram from a near-closed state, skew poses a unique challenge.
Long distance transmission with less distortion by pre-emphasis mode
To guarantee optimal signal integrity, the I/O technology includes transmit pre-emphasis, receive equalization, low jitter clocks, and noise isolation design techniques.
CalDriCon offers a solution not to distort eye diagram at receivers with pre-emphasis technology.
For example, macromodeling would be using a traditional IBIS model with an external VHDL-AMS model to represent a SerDes IO buffer with pre-emphasis.
3V, 4-channel, 1:1 DP-to-DP ReDriver supporting automatic pre-emphasis and output swing regeneration (using Link Training signaling) will sample February 2009, at 250K/yr: $1.
Optical Pre-emphasis, which facilitates equalization of optical powers or optical signal-to-noise-ratios of all the WDM wavelength channels propagating in a fiber; and many other innovations.
The new products reportedly feature: receive equalization (Rx EQ) and transmit pre-emphasis to improve signal integrity; impendent pre-emphasis control, allowing designers to tune outputs according to different trace or cable lengths; low power at 600mW; external control of Vbb; as well as low jitter performance (30 picoseconds) at 4.
With three mouse clicks, the eye diagram of a 30-inch long version of the microstrip above was simulated (FIGURE 3) and in one mouse click, the improvement when adding 50% pre-emphasis was simulated (FIGURE 4).
Often a technique called pre-emphasis is used by a transmitter to limit the overshoot during consecutive 1's or 0's.
In particular, the device allows users to tailor signal integrity by fine-tuning transmitter pre-emphasis, receiver equalization and output voltage swing through over 36 programmable settings to optimally offset system-specific backplane and interconnect losses.
Pre-emphasis, amplitude, and impedance in the transmitter