Device for write compensation in magnetic-media recording
Номер патента: MY123209A
Опубликовано: 31-05-2006
Автор(ы): Johannes O Voorman, Johannes W M Bergmans, Steven L Brittenham
Принадлежит: Hewlett Packard Co, Koninkl Philips Electronics Nv
Опубликовано: 31-05-2006
Автор(ы): Johannes O Voorman, Johannes W M Bergmans, Steven L Brittenham
Принадлежит: Hewlett Packard Co, Koninkl Philips Electronics Nv
Реферат: DEVICE FOR WRITE PRECOMPENSATION OF DATA SIGNALS TO BE RECORDED ON A MAGNETIC MEDIUM, WHICH DEVICE HAS AN INPUT FOR RECEIVING INPUT DATA SIGNALS AND AN OUTPUT FOR SUPPLYING THE OUTPUT SIGNALS TO BE RECORDED, AT LEAST A PLURALITY OF THE SIGNAL TRANSITIONS IN. THESE OUTPUT DATA SIGNALS BEING DELAYED WITH RESPECT TO THE CORRESPONDING SIGNAL TRANSITIONS IN THE INPUT DATA SIGNAL, THE SIGNAL PATH BETWEEN THE INPUT AND THE OUTPUT INCLUDING A SERIES ARRANGEMENT OF A FILTER CIRCUIT AND A HYSTERESIS CIRCUIT, THE HYSTERESIS CIRCUIT RECEIVES THE OUTPUT SIGNAL OF THE FILTER CIRCUIT AND SUPPLIES A BINARY SIGNAL AS ITS OUTPUT SIGNAL.THIS WRITE PRECOMPENSATION DEVICE SIMPLY ENABLES ALLOWANCE TO BE MADE FOR THE INFLUENCE OF A LARGE NUMBER OF PRECEDING SYMBOL VALUES ON A TRANSITION TO BE RECORDED. WHEN THE DEVICE IS COMBINED WITH A KNOWN WRITE COMPENSATION DEVICE IT SUFFICESTO USE A SIMPLE FILTER.MOST ILLUSTRATIVE DRAWING IS (FIGURE 3.)
Device for write compensation in magnetic-media recording
Номер патента: WO1999044201A8. Автор: Johannes W M Bergmans,Johannes O Voorman,Steven L Brittenham. Владелец: Philips Svenska AB. Дата публикации: 1999-12-29.