Lifetime improvement of laser diodes in optical drives

A life-extending, laser driver technology, applied in the direction of instruments, beam sources, optical recording heads, etc., can solve problems such as increased time amount, sub-optimal laser diode time amount, replication head cannot be quickly corrected, etc., to achieve increased working time, The effect of reducing power consumption and ambient temperature, reducing duty cycle

Inactive Publication Date: 2011-05-18
HARMAN BECKER AUTOMOTIVE SYST
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, the amount of time that the laser diode can be effectively turned off between read operations is not optimal
[0010] Furthermore, completely stopping the focus and tracking servo loops can be a disadvantage of optical drives implemented in vehicles or portable devices, which are exposed under mechanical disturbances such as

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Lifetime improvement of laser diodes in optical drives
  • Lifetime improvement of laser diodes in optical drives
  • Lifetime improvement of laser diodes in optical drives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The advantages of embodiments of the replicating device formulated according to the invention will now be explained in further detail with reference to the accompanying drawings.

[0039] figure 1 is a block diagram illustrating the configuration of the constituent parts of the reproduction apparatus 100 according to the present invention.

[0040] Such as figure 1 As shown, the reproduction apparatus 100 has an optical pickup or optical head 110 for reading data recorded on a recording track of an optical disc 1, which is an optical record carrier.

[0041] The optical record carrier may be any storage device suitable for recording compressed or uncompressed content, eg audio data and / or video data, and which can be read by optical means.

[0042] Preferably, the optical record carrier is an optical disc 1 such as a magneto-optical disc, CD, DVD, Blu-ray disc or HD (High Definition) disc. The reproduction apparatus 100 is adapted to read the data recorded on the rec...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A reproducing apparatus for reproducing data recorded on an optical record carrier is provided having an improved lifetime of the laser light source used to read the data. The reproducing apparatus includes a laser driver unit that is adapted to drive the light output of the laser light source to change from a reading mode, in which data recorded in the optical disc is being read for being reproduced, into a laser lifetime extension mode when an operation of reading said data is paused. In the laser lifetime extension mode, the laser light source is driven to emit a pulsed light output, therefore, the amount of time in which the laser light source is on without being needed is reduced and the lifetime of the laser light source is improved.

Description

technical field [0001] The invention relates to a reproducing device for reproducing data on an optical record carrier having a laser light source for reading recorded data, in particular to a reproducing device having a laser light source with an extended lifetime. Background technique [0002] Optical drives and reproducing devices for optical discs such as CD (Compact Disc) players and DVD players have been widely spread in recent years as household appliances, portable equipment and standard automobile equipment. Therefore, great efforts have been devoted to the development of cost-effective devices with low power consumption and high durability components. [0003] The laser diode used to read the recorded data from the optical disc is one of the most critical components of an optical drive in terms of cost and operating life. In particular, the lifetime of laser diodes is known to decrease with increasing ambient temperature and / or laser drive current. Therefore, eff...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G11B7/125G11B7/005
CPCG11B7/0901G11B7/126G11B7/005G11B7/0908
Inventor 理查德·拉奇曼迈克尔·霍恩克
Owner HARMAN BECKER AUTOMOTIVE SYST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap