Invention Grant
- Patent Title: Optical information recording method and apparatus
- Patent Title (中): 光信息记录方法和装置
-
Application No.: US10408367Application Date: 2003-04-08
-
Publication No.: US07313075B2Publication Date: 2007-12-25
- Inventor: Naruhiro Masui , Kenya Yokoi
- Applicant: Naruhiro Masui , Kenya Yokoi
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Dickstein Shapiro LLP
- Priority: JP10-189190 19980703
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical information recording method and apparatus which records information on a recording medium by irradiating the recording medium with an irradiation light of a recording power to form a recorded-mark on the recording medium such that reflection coefficient from an area of the recorded-mark is different than a reflection coefficient from an area of the recording medium where the recorded-mark is not formed by a changing power of the irradiation light. Information is recorded by modulating the irradiation light according to the information for recording, forming a recorded-mark on the recording medium by changing the power of the irradiation light between a recording power and a non-recording power, receiving reflection light of the irradiation light reflected by the recording medium and producing a corresponding light signal, determining a state of the recorded-mark based upon the light signal produced during a predetermined period of time immediately after the irradiation light changes from the recording power to the non-recording power, and controlling the recording power of the irradiation light according to the state of the recorded-mark.
Public/Granted literature
- US20030189885A1 Optical information recording method and apparatus Public/Granted day:2003-10-09
Information query
IPC分类: