Invention Grant
US08335144B2 Laser driving apparatus, laser driving method, optical apparatus, optical unit and pulse current generation circuit
失效
激光驱动装置,激光驱动方法,光学装置,光学装置和脉冲电流产生电路
- Patent Title: Laser driving apparatus, laser driving method, optical apparatus, optical unit and pulse current generation circuit
- Patent Title (中): 激光驱动装置,激光驱动方法,光学装置,光学装置和脉冲电流产生电路
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Application No.: US12662034Application Date: 2010-03-29
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Publication No.: US08335144B2Publication Date: 2012-12-18
- Inventor: Hiroyuki Chiba , Motoi Kimura
- Applicant: Hiroyuki Chiba , Motoi Kimura
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Rader Fishman & Grauer, PLLC
- Priority: JP2009-107524 20090427
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
Disclosed herein is a laser driving apparatus, including: a driving unit adapted to current drive a laser device with a current value in accordance with a level of a signal supplied thereto; and an emission light waveform correction unit adapted to receive supply of a pulsed reference signal and generate, based on a correction timing pulse interlocked with a rising edge and/or a falling edge of a pulse, a correction signal having a level different from that of the reference signal and then supply the correction signal to the driving unit so that the shape of the emission light waveform of the laser device becomes close to that of a rectangular wave.
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