TW200643925A - Optic disk recognizing method - Google Patents

Optic disk recognizing method

Info

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
Application number
TW094118242A
Other languages
Chinese (zh)
Other versions
TWI277963B (en
Inventor
Jyh-Haur Chen
Original Assignee
Via Tech Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Via Tech Inc filed Critical Via Tech Inc
Priority to TW94118242A priority Critical patent/TWI277963B/en
Publication of TW200643925A publication Critical patent/TW200643925A/en
Application granted granted Critical
Publication of TWI277963B publication Critical patent/TWI277963B/en

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  • 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.
TW94118242A 2005-06-02 2005-06-02 Optic disk recognizing method TWI277963B (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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