公开(公告)号：US09966099B2

公开(公告)日：2018-05-08

申请号：US15610787

申请日：2017-06-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuo Momoo ,  Yuichi Takahashi ,  Noritaka Akagi

IPC: G11B15/52 ,  G11B7/09 ,  G11B7/13

CPC classification number: G11B7/09 ,  G11B7/08582 ,  G11B7/13 ,  G11B7/14

Abstract: A record playback apparatus of the present disclosure includes a plurality of optical pickups that records information on a recording medium or plays back information from the recording medium; a single transport mechanism that transports the plurality of optical pickups together; and a transport control circuit that drives the single transport mechanism so that, when the single transport mechanism is driven to transport the plurality of optical pickups to respective target positions on the recording medium, absolute value of a maximum value of transport errors of the plurality of optical pickups with respect to the respective target positions becomes substantially equal to absolute value of a minimum value of transport errors of the plurality of optical pickups with respect to the respective target positions.