Data storage device configuration using mutual information
US-12374365-B2 · Jul 29, 2025 · US
Optical disc device and optical disc determination method
US8964516B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8964516-B2 |
| Application number | US-201414221732-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 21, 2014 |
| Priority date | Mar 29, 2013 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An optical pickup of an optical disc device is configured to read a signal recorded in an optical disc. An envelope signal generation unit is configured to generate an envelope signal from the signal read by the optical pickup. An off-track level storage unit stores an off-track level. An off-track signal generation unit is configured to generate an off-track signal by binarizing the envelope signal, which is generated by the envelope signal generation unit, using the off-track level stored by the off-track level storage unit. A determination unit is configured to output a disc determination signal, which indicates whether the optical disc is a standard-density optical disc or a high-density optical disc in which a line density is higher than the standard density, based on the off-track signal generated by the off-track signal generation unit.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical disc device comprising: an optical pickup configured to read a signal recorded in an optical disc; an envelope signal generation unit configured to generate an envelope signal from the signal read by the optical pickup; an off-track level storage unit that stores an off-track level; an off-track signal generation unit configured to generate an off-track signal by binarizing the envelope signal using the off-track level stored by the off-trac…
Assignees
Inventors
Classifications
Physics · mapped topic
- G11B19/128Primary
Physics · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8964516B2 cover?
- An optical pickup of an optical disc device is configured to read a signal recorded in an optical disc. An envelope signal generation unit is configured to generate an envelope signal from the signal read by the optical pickup. An off-track level storage unit stores an off-track level. An off-track signal generation unit is configured to generate an off-track signal by binarizing the envelope s…
- Who is the assignee on this patent?
- Jvc Kenwood Corp
- What technology area does this patent fall under?
- Primary CPC classification G11B19/128. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).