P

Inventor

MIYASHITA AKIRA

JP56 patents
⚠️ This page may combine multiple inventors who share the name “MIYASHITA AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

10 patents
US5949747ASep 7, 1999

Test recording method and optical information recording/reproducing apparatus for determining an optimum power of the light output from a light source in erasing pieces of information recorded on a land and groove of a recording medium

CANON KK61 citations96
US6147943ANov 14, 2000

Information recording and/or reproducing method and apparatus in which a servo process of a light beam is interrupted between input/output control of data at predetermined periods

CANON KK27 citations92
US5825729AOct 20, 1998

Information recording and/or reproducing method and apparatus in which a servo process of a light beam is interrupted between input/output control of data at predetermined periods

CANON KK21 citations92
US5815477ASep 29, 1998

Write test method for use in recording process for recording information by modulating the power of a laser light thereby forming a high-temperature state and a low-temperature state on a recording medium

CANON KK32 citations92
US5592456AJan 7, 1997

Information reproducing apparatus and method

CANON KK22 citations92
US6049516AApr 11, 2000

Information recording and/or reproducing method and apparatus in which a servo process of a light beam is interrupted between input/output control of data at predetermined periods

CANON KK5 citations74
US5781222AJul 14, 1998

Optical information recording/reproducing apparatus supplying a smaller high-frequency current to a first semiconductor laser for generating a light beam to record information than to a second semiconductor laser for reproducing recorded information

CANON KK12 citations74
US5627813AMay 6, 1997

Optical information recording and/or reproducing apparatus and method with auto power control function for two light sources

CANON KK11 citations74
US7108347B2Sep 19, 2006

Apparatus for determining discharging state of liquid droplets and method, and inkjet printer

CANON KK5 citations63
US5701280ADec 23, 1997

Optical information recording and/or reproducing apparatus in which a reproducing light beam is modulated with at least a 100% degree of modulation

CANON KK4 citations63

OTSUKA KAGAKU KK

7 patents

SONY CORP

5 patents

SUMITOMO CHEMICAL CO

3 patents

MIYASHITA AKIRA

3 patents

TAKASAGO PERFUMERY CO LTD

3 patents

DENSO CORP

3 patents

TOSOH CORP

2 patents

KANEBO LTD

2 patents

ISHIGE HIROYUKI

2 patents

SONY INTERACTIVE ENTERTAINMENT INC

2 patents

SONY GROUP CORP

2 patents

SUMITMO CHEMICAL COMPANY LTD

1 patent

NEC CORP

1 patent

MARUZEN KASEI KABUSHIKI KAISHA

1 patent

SUZUKI KAZUHIRO

1 patent

NTT ELECTRONICS CORP

1 patent

EBATA KOICHI

1 patent

Showing the top 50 of 56 patents by PatentIndex Score.