Log in
Enquire now
‌

US Patent 7561505 Disk apparatus

OverviewStructured DataIssuesContributors

Contents

Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent
1

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
75615051
Patent Inventor Names
Tomomitsu Morishige1
Date of Patent
July 14, 2009
1
Patent Application Number
115416971
Date Filed
October 3, 2006
1
Patent Primary Examiner
‌
Thang V. Tran
1
Patent abstract

There is provided a disk apparatus adapted to allow the rotational frequency of an optical disk to reach a predetermined rotational frequency soon for shifting to a reproducing operation, when setting up the rotation of the optical disk, even if the optical disk may have a large weight. The change in the rotational frequency of an optical disk is detected at a predetermined time interval; the rotational acceleration of the optical disk is calculated based on the detected change in the rotational frequency of the optical disk at the predetermined time interval; it is determined whether or not the weight of the optical disk is greater than that of a reference optical disk based on the difference between the calculated rotational acceleration of the optical disk and the rotational acceleration of the reference optical disk; and the driving voltage of a spindle motor is increased if it is determined that the weight of the optical disk is greater than that of the reference optical disk.

Timeline

No Timeline data yet.

Further Resources

Title
Author
Link
Type
Date
No Further Resources data yet.

References

Find more entities like US Patent 7561505 Disk apparatus

Use the Golden Query Tool to find similar entities by any field in the Knowledge Graph, including industry, location, and more.
Open Query Tool
Access by API
Golden Query Tool
Golden logo

Company

  • Home
  • Press & Media
  • Blog
  • Careers
  • WE'RE HIRING

Products

  • Knowledge Graph
  • Query Tool
  • Data Requests
  • Knowledge Storage
  • API
  • Pricing
  • Enterprise
  • ChatGPT Plugin

Legal

  • Terms of Service
  • Enterprise Terms of Service
  • Privacy Policy

Help

  • Help center
  • API Documentation
  • Contact Us
By using this site, you agree to our Terms of Service.