Inventor
Keishi Ueno
Inventor
Iruma, JP
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer89%
H03DDemodulation or transference of modulation from one carrier to another6%
H03MCoding6%
PatentTitleYear
8,270,274'Optical disk inspection device and inspection method'20128,018,798'Demodulation circuit and optical disk drive'20117,983,132'Optical disk apparatus'20117,957,239'Optical disk drive for adjusting power of a recording laser'20117,764,580'Demodulator'20107,697,405'Inspection apparatus for optical disk having phase modulated wobble tracks and optical disk apparatus for driving the optical disk'20107,541,955'A/D conversion circuit and optical disk drive'20097,436,746'Tilt detection system, tilt detection method and tilt adjustment method'20087,298,680'Optical disc apparatus'20077,212,486'Optical disk device setting a gain of an amplifier so that a peak value and a bottom value of wobble signal components coincide'20077,054,246'Optical disk device adapted for reliably detecting pre-pit information formed on an optical disk'20066,999,388'Optical disk apparatus'20066,992,962'Wobble signal detection circuit having a lowpass filter for detecting a wobble signal with reduced sampling noise'20066,876,707'Signal processing circuit and signal processing method'20056,807,135'Tilt detection system, tilt detection method and tilt adjustment method'20046,031,796'Optical disk apparatus'20005,914,927'Optical disk apparatus'19995,305,157'Read circuit providing two different reference levels for reading the servo sectors and data sectors of a rotating data storage disk'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2012Patents assigned to TEAC CORP (17)· patent assignee history
1994Based in Fuchu, JP· patent location history
1999–2000Patents assigned to NEC CORP (2)· patent assignee history
1999–2008Based in Hanno, JP· patent location history
2006–2012Based in Iruma, JP· patent location history
2007Based in Saitama, JP· patent location history
2010Patents assigned to TEAC COPORATION (1)· patent assignee history
2012Patents assigned to UENO KEISHI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TEAC CORP | 17 | 1994–2012 |
| NEC CORP | 2 | 1999–2000 |
| TEAC COPORATION | 1 | 2010 |
| UENO KEISHIself | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Iruma, JP | 10 | 2006–2012 |
| Hanno, JP | 6 | 1999–2008 |
| Saitama, JP | 1 | 2007 |
| Fuchu, JP | 1 | 1994 |