专利名称：Information storage device with head
position detection outside a ur utilizable
region and an optical disk drive device
姓的英文having target velocity- controlled head
actuation
发明人：Masaharu Ogawa
申请号：US07/582647
申请日：19900913
公开号：US05285431A
公开日：锅居
夏至未至剧情介绍19940208楼房买卖合同
瞬息之间专利内容由知识产权出版社提供
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售货员摘要：In a disk drive device comprising an optical head having a movable part including a lens for focusing a light spot on a track of an optical disk and a photodetector which receives the light reflected from the track and provides a photoelectric conversion signal, a head actuator moves the movable part in a radial direction of the optical disk when the optical head access the tracks of the optical disk, and a motion detection means receives the photoelectric conversion signal and outputs a track-traver motion signal reprenting the track-traver motion of the light spot. An acceleration detecting means detects the acceleration of the head actuator. A target velocity generati
ng means generates a track-traversing target velocity determined by the output of acceleration detecting means and the photoelectric conversion signal. A state-obrver means receives the output signals from the acceleration detecting means and the motion detecting means, and outputs an estimated track-traver velocity of the light spot. A head actuator drive circuit controls the head actuator such that the estimated velocity
coincides with the target velocity.
申请人：MITSUBISHI DENKI KABUSHIKI KAISHA 代理机构：Jacobson, Price, Holman & Stern
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