Disk device

Abstract

A disk device includes: an optical pick-up, operable to reproduce data recorded in a disk; a flaw detector, operable to output a flaw detecting signal when a flaw formed on the disk is detected; and a jump controller, operable to control a track jump of the optical pick-up including a first track jump and a second track jump subsequent to the first track jump. A timing of starting to control the track jump corresponding to a still reproduction mode is determined based on a rotational position of the disk. When the flaw detecting signal is outputted in a time period in which the jump controller controls the first track jump corresponding to the still reproduction mode, the jump controller sets a timing for stating the second track jump to a timing different from a timing for starting the first track jump.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram showing an electric structure of a DVD recorder of one embodiment of a disk device according to the present invention.

FIG. 2 is a block diagram showing an electric structure of a flaw detecting unit.

FIG. 3 is an explanatory view showing a signal wave form related to the flaw detecting unit.

FIG. 4 is a flowchart showing an operation of the embodiment during a track jump.

FIG. 5 is an explanatory view showing the relation in time between an FG pulse, the track jump and a flaw detecting signal.

FIG. 6 is an explanatory view showing the relation between the timing of the track jump and the timing of outputting the flaw detecting signal.

Claims

1. A disk device comprising: optical pick-up means for reproducing data recorded in a disk;pulse generating means for outputting an FG pulse every time a spindle motor for rotating the disk rotates by a prescribed angle;flaw detecting means for outputting a flaw detecting signal when a flaw formed on the disk is detected; andjump control means for controlling a track jump of the optical pick-up means, the jump control means starting to control of the track jump in accordance with a timing of outputting the FG pulse at the time of a still reproduction; whereinwhen the jump control means detects that the flaw detecting signal is outputted during controlling the tack jump corresponding to the still reproduction, the jump control means sets a different timing for starting a subsequent track jump from the previous timing of starting the track jump, andwhen the jump control means detects that the flaw detecting signal is outputted at the time of starting to control the track jump corresponding to the still reproduction, the jump control means sets the timing of starting the track jump to a timing delayed by a prescribed amount therefrom.

2. A disk device comprising: an optical pick-up, operable to reproduce data recorded in a disk;a flaw detector, operable to output a flaw detecting signal when a flaw formed on the disk is detected; anda jump controller, operable to control a track jump of the optical pick-up including a first track jump and a second track jump subsequent to the first track jump, whereina timing of starting to control the track jump corresponding to a still reproduction mode is determined based on a rotational position of the disk, andwhen the flaw detecting signal is outputted in a time period in which the jump controller controls the first track jump corresponding to the still reproduction mode, the jump controller sets a timing for stating the second track jump to a timing different from a timing for starting the first track jump.

3. The disk device according to claim 2, wherein when the flaw detecting signal is outputted at a time point at which the jump controller starts to control the track jump corresponding to the still reproduction mode, the jump controller sets a timing for starting the track jump to a timing delayed by a prescribed amount therefrom.