Advances in magnetic and optical recording. 4. Signal processing systems on digital recording.
نویسندگان
چکیده
منابع مشابه
Signal Processing for Two-dimensional Magnetic Recording
With magnetic storage devices already achieving storage densities of up to 400 Gigabits per square inch (Gb/in), the state of the art is rapidly approaching theoretical limits (dictated by thermal stability concerns). Hence, there is an effort in the industry to develop alternative magnetic storage technologies. Two-dimensional magnetic recording (TDMR) is one such candidate technology. In cont...
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A nonlinear signal-processing model is derived for the optical recording channel based on scalar diffraction theory. In this model, the signal waveform is written in closed form as an explicit function of the channel bits that are stored on an optical disk, thereby comprising both linear and nonlinear terms. Its explicit dependence on the channel bits makes this model well suited for signal-pro...
متن کاملSignal Processing for Bit-Patterned Media and Heat-Assisted Magnetic Recording Systems with Media Noise
With the advent of the information age, the demand for larger storage capacity is ever increasing. However, the need to continue scaling conventional magnetic recording technologies to higher areal densities has led to physical and engineering limits which are difficult to overcome. New magnetic recording technologies are required. Bit-patterned media recording (BPMR) and heat-assisted magnetic...
متن کاملSignal Space Detection for DVD Optical Recording
A signal space detector (SSD) based on a single hyperplane is proposed which offers nearly the same performance as the fixed delay tree search with decision feedback (FDTS/DF) for the digital versatile disk (DVD) channel. The FDTS/DF detector with a reasonable decision delay performs almost as well as the optimal maximum likelihood sequence detector (MLSD) due to the EFMplus modulation code tha...
متن کاملDiscrete-time Models for Digital Magnetic Recording
Using a fundamental result from detection theory, this paper translates the most popular continuous-time models for digital magnetic recording into simple discrete-time models which are equivalent from an information transfer point of view, and which are closely related to the optimum performances of all commonly applied receiver types. The models take account of the head-to-medium spacing, med...
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ژورنال
عنوان ژورنال: The Journal of the Institute of Television Engineers of Japan
سال: 1988
ISSN: 0386-6831,1884-9652
DOI: 10.3169/itej1978.42.330