发明名称 |
Optical disk playing apparatus and method for discriminating optical disk |
摘要 |
An optical disk playing apparatus which performs at least a focusing servo operation for reading light as a servo operation and irradiates the reading light onto one optical disk, receives reflected light from the optical disk by a pickup to obtains a light receiving signal, moves an irradiated position of the reading light onto the optical disk to cross tracks on the disk; generates a tracking error signal in response to the reading signal during the track crossing; compares the tracking error signal with a threshold value; and determines the type of the optical disk in accordance with the number of pulses in the compared result signal within a predetermined period from start of the track crossing.
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申请公布号 |
US6952387(B2) |
申请公布日期 |
2005.10.04 |
申请号 |
US20020114065 |
申请日期 |
2002.04.03 |
申请人 |
PIONEER CORPORATION |
发明人 |
NISHIO YOSHIMICHI;YAMAZAKI HITOSHI;MATSUO KAZUNORI;SUZUKI TAKASHI;HASHIZUKA YOSHIHIRO;SASAKI TAKASHI;TAKAHASHI KENICHI;GOTO HIROKI;WATARIHANA HIDEAKI |
分类号 |
G11B7/00;G11B7/004;G11B7/085;G11B7/09;G11B19/12;G11B21/08;(IPC1-7):G11B5/58 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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