MDCP: Patent Abstact US05050145: Optical disk recording and reproducing apparatus having faster reproducing speed than recording speed

US05050145 Optical disk recording and reproducing apparatus having faster reproducing speed than recording speed

Assignee Sony Corporation

Assign./Filed Sept. 17, 1991/ Jan. 22, 1990

Inventors Yoshida; Tadao

Summary CD-MO system in which playback rotational speed is higher than recording rotational speed.

Abstract An optomagnetic disk recording and reproducing apparatus includes an optomagnetic disk having a vertical magnetic film capable of recording and reproducing an information signal, a recording and reproducing head unit for recording an information signal in the optomagnetic disk and reproducing an information signal recorded in the optomagnetic disk, a spindle motor for rotationally driving the optomagnetic disk, and means for controlling the spindle motor such that a rotational speed of the optomagnetic disk upon reproducing of an information signal recorded in the optomagnetic disk performed by the recording and reproducing head unit is set higher than the rotational speed of the optomagnetic disk upon recording of an information signal in the optomagnetic disk performed by the recording and reproducing head unit.

US05050145	Optical disk recording and reproducing apparatus having faster reproducing speed than recording speed
Assignee	Sony Corporation
Assign./Filed	Sept. 17, 1991/ Jan. 22, 1990
Inventors	Yoshida; Tadao
Summary	CD-MO system in which playback rotational speed is higher than recording rotational speed.
Abstract	An optomagnetic disk recording and reproducing apparatus includes an optomagnetic disk having a vertical magnetic film capable of recording and reproducing an information signal, a recording and reproducing head unit for recording an information signal in the optomagnetic disk and reproducing an information signal recorded in the optomagnetic disk, a spindle motor for rotationally driving the optomagnetic disk, and means for controlling the spindle motor such that a rotational speed of the optomagnetic disk upon reproducing of an information signal recorded in the optomagnetic disk performed by the recording and reproducing head unit is set higher than the rotational speed of the optomagnetic disk upon recording of an information signal in the optomagnetic disk performed by the recording and reproducing head unit.