Inventor

Takayoshi Chiba

Inventor

Tokyo, JP

Overview

19→

Patents

1994–2010

Patent span

Physics

Primary field (CPC G)

Patents· 19 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 transducer79%

H03MCoding17%

H04LTransmission of digital information, e.g. telegraphic communication4%

PatentTitleYear

7,663,998'Information reproduction device and read clock monitoring method'2010 7,430,157'Recording device, recording method, reproducing device, and reproducing method'2008 6,906,990'Phase-change optical disk and optical disk apparatus'2005 6,570,940'Information reproducing apparatus and reproducing method'2003 6,441,661'PLL circuit'2002 6,317,471'Information reproducing apparatus and reproducing method'2001 6,289,059'Information reproducing apparatus and reproducing method'2001 6,192,502'Information reproducing apparatus and reproducing method'2001 6,097,685'Information reproducing apparatus and reproducing method'2000 5,867,463'Recording and reproducing apparatus including read/write mode reproducing control parameter setting means'1999 5,617,382'Optical information accessing system capable of reliable jump-back control'1997 5,563,854'Optical information accessing system capable of generating one sector initiation signal for each sector'1996 5,523,990'Apparatus for using window signal generators to enable detection of heater information such as an address mark, sector mark, or address information recorded on each sector of a disc recording medium only where such information could be present'1996 5,523,988'Optical pickup control apparatus'1996 5,521,893'Data recording apparatus'1996 5,502,699'Disc reproduction apparatus'1996 5,446,604'Apparatus for detecting addresses recorded on each sector of a disk by detecting a first address mark and then in the absence of a second address mark, generating a pseudo address mark a predetermined time after detecting the first address mark'1995 5,436,878'Disc recording and/or reproducing apparatus for permitting continuous sector processing at boundaries between recording regions with different recording densities'1995 5,353,175'Apparatus for using window signal generators to enable detection of header information such as an address mark, sector mark, or address information recorded on each sector of a disc recording medium only where such information could be present'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2010Patents assigned to SONY CORP (18)· patent assignee history

1994–2010Based in Tokyo, JP· patent location history

1996–1997Patents assigned to NEC CORP (4)· patent assignee history

2002Patents assigned to ASAHI CHEMICAL IND (1)· patent assignee history

2002Patents assigned to ASAHI CHEMICAL MICRO SYST (1)· patent assignee history

2002Based in Machida, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SONY CORP	18	1994–2010
NEC CORP	4	1996–1997
ASAHI CHEMICAL IND	1	2002
ASAHI CHEMICAL MICRO SYST	1	2002

Locations

Location	Patents	Span
Tokyo, JP	18	1994–2010
Machida, JP	1	2002