TW200643925A - Optic disk recognizing method - Google Patents
Optic disk recognizing methodInfo
- Publication number
- TW200643925A TW200643925A TW094118242A TW94118242A TW200643925A TW 200643925 A TW200643925 A TW 200643925A TW 094118242 A TW094118242 A TW 094118242A TW 94118242 A TW94118242 A TW 94118242A TW 200643925 A TW200643925 A TW 200643925A
- Authority
- TW
- Taiwan
- Prior art keywords
- error signal
- focusing error
- optic disk
- optic
- disk
- Prior art date
Links
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Disclosed is an optic disk recognizing method, which determines the type of a source optic disk in a movement period of an optic pickup. The method includes the steps of detecting to obtain a first focusing error signal, wherein the first focusing error signal has a trough value less than a first threshold; and detecting a second focusing error signal peak value of a second focusing error signal that is greater than a second threshold within a predetermined time period starting from the time when the first focusing error signal is acquired, and in case there is no such a second focusing error signal peak value satisfying the condition, then detecting to obtain an RF level signal peak value of an RF level signal that is greater than a third threshold at a time after the predetermined time period to the movement period of the optic pickup. As such, an optic disk drive can correctly determine if the type of the source optic disk belongs to a single-layer disk, a DVD dual-layer disk or an SACD dual-layer disk and then correctly read the contents of the optic disk.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94118242A TWI277963B (en) | 2005-06-02 | 2005-06-02 | Optic disk recognizing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94118242A TWI277963B (en) | 2005-06-02 | 2005-06-02 | Optic disk recognizing method |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200643925A true TW200643925A (en) | 2006-12-16 |
TWI277963B TWI277963B (en) | 2007-04-01 |
Family
ID=38626086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW94118242A TWI277963B (en) | 2005-06-02 | 2005-06-02 | Optic disk recognizing method |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI277963B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8411542B2 (en) | 2008-03-14 | 2013-04-02 | Mediatek, Inc. | Method for controlling layer changes for an optical disk drive |
-
2005
- 2005-06-02 TW TW94118242A patent/TWI277963B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8411542B2 (en) | 2008-03-14 | 2013-04-02 | Mediatek, Inc. | Method for controlling layer changes for an optical disk drive |
Also Published As
Publication number | Publication date |
---|---|
TWI277963B (en) | 2007-04-01 |
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