本文叙述一种具有可变传输速率的硬盘驱动器脉冲检测电路。使用这种电路,可把磁盘记录面分成几个区,改变每个区的记录信号频率,从而保持各个分区中的磁化翻转密度基本相同。这种等密度记录方式,充分利用了磁头/盘的记录潜力,在维持现有磁头/盘的情况下,能大大提高磁盘驱动器的记录总容量。由于集成电路技术的迅速发展,这种方法在可行性及降低成本方面都有不少优点。 This article describes a hard disk drive pulse detection circuit with variable transfer rate. Using this circuit, the recording surface of the disk can be divided into several areas, changing the frequency of the recording signal of each area, so as to keep the magnetization flip density in each area basically the same. This isopycnic recording method, which takes full advantage of the recording potential of a magnetic head / disk, greatly improves the total recording capacity of the disk drive while maintaining the existing head / disk. Due to the rapid development of integrated circuit technology, this method has many advantages in terms of feasibility and cost reduction.