US2003031099A1PendingUtilityA1

Head amplifier and an optical disk device using the same

Priority: Dec 16, 1998Filed: Oct 17, 2002Published: Feb 13, 2003

Est. expiryDec 16, 2018(expired)· nominal 20-yr term from priority

Inventors:Hiroyuki Tsuchinaga Hiroyuki Minemura

G11B 7/0053G11B 20/10009G11B 2220/2537G11B 7/005G11B 11/10595G11B 20/10027G11B 7/09

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Claims

Abstract

An information recording method for recording information by irradiating an information recording medium with light, including steps of providing the information recording medium with a physical identification field (PID) and a data field, and utilizing a head amplifier for amplifying a detection signal in the PID field with a first gain and amplifying a detection signal in the data field with a second gain different from the first gain to record the information to the data field.

Claims

exact text as granted — not AI-modified

What is claimed is:  
     
         1 . An information recording method for recording information by irradiating an information recording medium with light, comprising the steps of: 
 providing said information recording medium with a physical identification field (PID) and a data field; and    utilizing a head amplifier for amplifying a detection signal in said PID field with a first gain and amplifying a detection signal in said data field with a second gain different from said first gain to record the information to said data field.    
     
     
         2 . An information recording method according to  claim 2 , further comprising the steps of obtaining a tracking error signal while recording the information in said data field.

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