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As magnetic recording density grows, the nonlinear distortions, known as transition shift and partial erasure,arise and limit the performance of the detector. In designing a detector, a phase detector is required to estimate the timing error in a timing recovery loop; the Muller & Mueller's phase detector is often adopted for its simple realization. In this article, we focus on the characteristics...
Nonlinear effects arise in the high-density magnetic recording, which causes a performance degradation of the corresponding detector. Design of the timing recovery is crucial for the detector, and it becomes complicated in the presence of the nonlinear effects. In this article, we examine the effects of the Muller & Mueller's phase detector for a nonlinear magnetic recording channel. For simplicity,...
A driving system is presented for generating a uniform luminance picture on passive matrix organic light emitting diode (PMOLED) panels in this paper. Especially, the controller overcomes the problem of luminance non-uniformity on displaying pictures. Because the controller is a voltage type driver, the output impedance of the driver is much less than that of the current-type driver. Hence, the controller...
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