Ryuichi Naito

Person

Tokorozawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Disc player with objective lens arranged in a zigzag pattern
- Patent number 6,262,964
- Issue date Jul 17, 2001
- Pioneer Electronic Corporation
- Hiroshi Yokota
- G11 - INFORMATION STORAGE
Information Patent Grant
Disc player with alternating ascending/descending guide devices
- Patent number 5,953,308
- Issue date Sep 14, 1999
- Pioneer Electronic Corporation
- Hiroshi Yokota
- G11 - INFORMATION STORAGE
Information Patent Grant
Disc player with parallel objective lenses
- Patent number 5,848,049
- Issue date Dec 8, 1998
- Pioneer Electronic Corporation
- Hiroshi Yokota
- G11 - INFORMATION STORAGE
Information Patent Grant
Disc player
- Patent number 5,677,904
- Issue date Oct 14, 1997
- Pioneer Electronic Corporation
- Hiroshi Yokota
- G11 - INFORMATION STORAGE
Information Patent Grant
Pulling-in circuit for PLL circuit, pulling-in method for PLL circu...
- Patent number 5,671,201
- Issue date Sep 23, 1997
- Pioneer Electronic Corporation
- Hiroshi Yokota
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for reproducing information recorded on CLV di...
- Patent number 5,646,921
- Issue date Jul 8, 1997
- Pioneer Electronic Corporation
- Hiroshi Yokota
- G11 - INFORMATION STORAGE
Information Patent Grant
Pulling-in circuit for PLL circuit, pulling-in method for PLL circu...
- Patent number 5,619,484
- Issue date Apr 8, 1997
- Pioneer Electronic Corporation
- Hiroshi Yokota
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disc with data recorded at different rates on different zon...
- Patent number 5,463,604
- Issue date Oct 31, 1995
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Opto-magnetic disk unit with improved dynamic range characteristics...
- Patent number 5,034,934
- Issue date Jul 23, 1991
- Pioneer Electronic Corp.
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Autochanger of writable discs including a non-volatile memory for s...
- Patent number 5,025,432
- Issue date Jun 18, 1991
- Pioneer Electronic Corporation
- Ryuichi Naito
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Autochanger of writable discs
- Patent number 5,025,431
- Issue date Jun 18, 1991
- Pioneer Electronic Corporation
- Ryuichi Naito
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for detecting finally recorded sector
- Patent number 5,023,876
- Issue date Jun 11, 1991
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Recorded data demodulation circuit
- Patent number 5,021,894
- Issue date Jun 4, 1991
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Read-out information signal processing circuit in an optical record...
- Patent number 5,001,698
- Issue date Mar 19, 1991
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Wide bandwidth photoelectric converting circuit
- Patent number 4,935,618
- Issue date Jun 19, 1990
- Pioneer Electronic Corporation
- Ryuichi Naito
- G01 - MEASURING TESTING
Information Patent Grant
Phase-locked loop circuit
- Patent number 4,929,917
- Issue date May 29, 1990
- Pioneer Electronic Corporation
- Fumihiko Yokogawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for detecting an error in loading a recording disc
- Patent number 4,679,181
- Issue date Jul 7, 1987
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Signal waveform equalizing circuitry
- Patent number 4,636,745
- Issue date Jan 13, 1987
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Focus servo device of a system for reading out recorded information
- Patent number 4,637,005
- Issue date Jan 13, 1987
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Disc drive control system
- Patent number 4,611,319
- Issue date Sep 9, 1986
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Focus servo control device for an optical system having an initial...
- Patent number 4,544,837
- Issue date Oct 1, 1985
- Pioneer Electronic Corporation
- Megumi Tanaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Digital modulation signal reading device
- Patent number 4,540,897
- Issue date Sep 10, 1985
- Pioneer Electronic Corporation
- Saburo Takaoka
- G11 - INFORMATION STORAGE
Information Patent Grant
Phase-locked loop detecting circuit
- Patent number 4,535,306
- Issue date Aug 13, 1985
- Pioneer Electronic Corporation
- Tadahiro Yamaguchi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Pick-up point dislocation detecting device in recording a disc player
- Patent number 4,493,068
- Issue date Jan 8, 1985
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Disc drive servo system
- Patent number 4,486,795
- Issue date Dec 4, 1984
- Pioneer Electronic Corporation
- Ryuichi Naito
- G11 - INFORMATION STORAGE

Ryuichi Naito

Person

Patents Grantslast 30 patents

Disc player with objective lens arranged in a zigzag pattern

Disc player with alternating ascending/descending guide devices

Disc player with parallel objective lenses

Disc player

Pulling-in circuit for PLL circuit, pulling-in method for PLL circu...

Method and apparatus for reproducing information recorded on CLV di...

Pulling-in circuit for PLL circuit, pulling-in method for PLL circu...

Optical disc with data recorded at different rates on different zon...

Opto-magnetic disk unit with improved dynamic range characteristics...

Autochanger of writable discs including a non-volatile memory for s...

Autochanger of writable discs

Method and apparatus for detecting finally recorded sector

Recorded data demodulation circuit

Read-out information signal processing circuit in an optical record...

Wide bandwidth photoelectric converting circuit

Phase-locked loop circuit

Method for detecting an error in loading a recording disc

Signal waveform equalizing circuitry

Focus servo device of a system for reading out recorded information

Disc drive control system

Focus servo control device for an optical system having an initial...

Digital modulation signal reading device

Phase-locked loop detecting circuit

Pick-up point dislocation detecting device in recording a disc player

Disc drive servo system