JPH0258737A - Controller for semiconductor laser writing - Google Patents

Controller for semiconductor laser writing

Info

Publication number
JPH0258737A
JPH0258737A JP20998688A JP20998688A JPH0258737A JP H0258737 A JPH0258737 A JP H0258737A JP 20998688 A JP20998688 A JP 20998688A JP 20998688 A JP20998688 A JP 20998688A JP H0258737 A JPH0258737 A JP H0258737A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
circuit
writing power
write
output
controller
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP20998688A
Inventor
Shigeru Nishida
Original Assignee
Seiko Epson Corp
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

Links

Abstract

PURPOSE: To stably record and regenerate signals by estimating the effect of remaining heat by integrating write signals and controlling the writing power by using an estimated output.
CONSTITUTION: This controller is provided with a writing power setting circuit 1, write signal generation circuit 2, write pulse detection circuit 3 and pulse integration circuit 4. The output of the write pulse detection circuit 3 is integrated by the pulse integration circuit 4 and negatively fed back to the writing power setting circuit 1. Since the writing power is controlled by means of the output of the write pulse integration circuit 4 in such a manner, a stable recording domain can be formed and bit-width recording can be realized.
COPYRIGHT: (C)1990,JPO&Japio
JP20998688A 1988-08-24 1988-08-24 Controller for semiconductor laser writing Pending JPH0258737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20998688A JPH0258737A (en) 1988-08-24 1988-08-24 Controller for semiconductor laser writing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20998688A JPH0258737A (en) 1988-08-24 1988-08-24 Controller for semiconductor laser writing

Publications (1)

Publication Number Publication Date
JPH0258737A true true JPH0258737A (en) 1990-02-27

Family

ID=16581970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20998688A Pending JPH0258737A (en) 1988-08-24 1988-08-24 Controller for semiconductor laser writing

Country Status (1)

Country Link
JP (1) JPH0258737A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1091993A (en) * 1996-08-30 1998-04-10 Samsung Electron Co Ltd Laser diode driving device using reduced waveform
US8972867B1 (en) 1998-12-31 2015-03-03 Flashpoint Technology, Inc. Method and apparatus for editing heterogeneous media objects in a digital imaging device
US8970761B2 (en) 1997-07-09 2015-03-03 Flashpoint Technology, Inc. Method and apparatus for correcting aspect ratio in a camera graphical user interface
US9224145B1 (en) 2006-08-30 2015-12-29 Qurio Holdings, Inc. Venue based digital rights using capture device with digital watermarking capability

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1091993A (en) * 1996-08-30 1998-04-10 Samsung Electron Co Ltd Laser diode driving device using reduced waveform
US5956357A (en) * 1996-08-30 1999-09-21 Samsung Electronics Co., Ltd. Laser diode driving apparatus using attenuated waveform
US8970761B2 (en) 1997-07-09 2015-03-03 Flashpoint Technology, Inc. Method and apparatus for correcting aspect ratio in a camera graphical user interface
US8972867B1 (en) 1998-12-31 2015-03-03 Flashpoint Technology, Inc. Method and apparatus for editing heterogeneous media objects in a digital imaging device
US9224145B1 (en) 2006-08-30 2015-12-29 Qurio Holdings, Inc. Venue based digital rights using capture device with digital watermarking capability

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