TW200632882A - A method and apparatus to measure a track pitch of a compact disk - Google Patents

A method and apparatus to measure a track pitch of a compact disk

Info

Publication number
TW200632882A
TW200632882A TW094107264A TW94107264A TW200632882A TW 200632882 A TW200632882 A TW 200632882A TW 094107264 A TW094107264 A TW 094107264A TW 94107264 A TW94107264 A TW 94107264A TW 200632882 A TW200632882 A TW 200632882A
Authority
TW
Taiwan
Prior art keywords
track pitch
measure
compact disk
track
read
Prior art date
Application number
TW094107264A
Other languages
Chinese (zh)
Other versions
TWI310546B (en
Inventor
Shih-Cheng Fang
Yi-Long Hsiao
Original Assignee
Quanta Storage 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 Quanta Storage Inc filed Critical Quanta Storage Inc
Priority to TW94107264A priority Critical patent/TWI310546B/en
Publication of TW200632882A publication Critical patent/TW200632882A/en
Application granted granted Critical
Publication of TWI310546B publication Critical patent/TWI310546B/en

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

A method and apparatus to measure a track pitch of a compact disk utilizes a processor to read a pulse number recorded in a read only memory to drive a driving means, and then measure track numbers read by a reading means. Before measuring the track pitch, the pulse number products an angle driven by an unit pulse and then products a displacement pushed by a unit angle to obtain total displacement of the reading means driven by the driving means. Finally, the total displacement divides the track number to obtain the track pitch of the compact disk.
TW94107264A 2005-03-09 2005-03-09 A method and apparatus to measure a track pitch of a compact disk TWI310546B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW94107264A TWI310546B (en) 2005-03-09 2005-03-09 A method and apparatus to measure a track pitch of a compact disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW94107264A TWI310546B (en) 2005-03-09 2005-03-09 A method and apparatus to measure a track pitch of a compact disk

Publications (2)

Publication Number Publication Date
TW200632882A true TW200632882A (en) 2006-09-16
TWI310546B TWI310546B (en) 2009-06-01

Family

ID=45072267

Family Applications (1)

Application Number Title Priority Date Filing Date
TW94107264A TWI310546B (en) 2005-03-09 2005-03-09 A method and apparatus to measure a track pitch of a compact disk

Country Status (1)

Country Link
TW (1) TWI310546B (en)

Also Published As

Publication number Publication date
TWI310546B (en) 2009-06-01

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees