Hiroyuki Hirano

Person

Saitama, 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
Recording medium playing apparatus for reproducing same time inform...
- Patent number 6,049,654
- Issue date Apr 11, 2000
- Pioneer Electronic Corporation
- Yoshiki Furuta
- 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
Clock generator circuit and a synchronizing signal detection method...
- Patent number 4,982,110
- Issue date Jan 1, 1991
- Pioneer Electronic Corporation
- Fumihiko Yokogawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Circuit for digitally generating a tracking error signal to avoid o...
- Patent number 4,935,912
- Issue date Jun 19, 1990
- Pioneer Electronic Corporation
- Hiroyuki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for data recording and reproducing with error...
- Patent number 4,908,811
- Issue date Mar 13, 1990
- Pioneer Electronic Corporation
- Fumihiko Yokogawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Automatic loading disc player
- Patent number 4,879,705
- Issue date Nov 7, 1989
- Pioneer Electronic Corporation
- Yoshio Aoyagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Clock generator circuit and a synchronizing signal detection method...
- Patent number 4,872,155
- Issue date Oct 3, 1989
- Pioneer Electronic Corporation
- Fumihiko Yokogawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Servo circuit for generating a tracking error signal for optical di...
- Patent number 4,860,271
- Issue date Aug 22, 1989
- Pioneer Electronic Corporation
- Fumihiko Yokogawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Programmed reproduction system for still picture recording/reproduc...
- Patent number 4,845,571
- Issue date Jul 4, 1989
- Pioneer Electronic Corporation
- Hiroyuki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Automatic loading disc player
- Patent number 4,829,502
- Issue date May 9, 1989
- Pioneer Electronic Corporation
- Yoshiro Aoyagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Automatic loading disc player
- Patent number 4,701,902
- Issue date Oct 20, 1987
- Pioneer Electronic Corporation
- Yoshiro Aoyagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Tracking-servo device
- Patent number 4,613,963
- Issue date Sep 23, 1986
- Pioneer Electronic Corporation
- Hiroyuki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Tracking servo control system for an information read-out system
- Patent number 4,544,872
- Issue date Oct 1, 1985
- Pioneer Electronic Corporation
- Hiroyuki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Pick-up device positioning arrangement in an information disc player
- Patent number 4,545,003
- Issue date Oct 1, 1985
- Pioneer Electronic Corporation
- Hiroyuki Hirano
- G11 - INFORMATION STORAGE
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
Tone control circuit utilizing variable gain amplifier
- Patent number 4,328,465
- Issue date May 4, 1982
- Pioneer Electronic Corporation
- Saburo Takaoka
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tone control device
- Patent number 4,284,965
- Issue date Aug 18, 1981
- Pioneer Electronic Corporation
- Ryozi Higashi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tone control device
- Patent number 4,271,398
- Issue date Jun 2, 1981
- Pioneer Electronic Corporation
- Ryozi Higashi
- H03 - BASIC ELECTRONIC CIRCUITRY

Hiroyuki Hirano

Person

Patents Grantslast 30 patents

Disc player with objective lens arranged in a zigzag pattern

Recording medium playing apparatus for reproducing same time inform...

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...

Clock generator circuit and a synchronizing signal detection method...

Circuit for digitally generating a tracking error signal to avoid o...

Method and apparatus for data recording and reproducing with error...

Automatic loading disc player

Clock generator circuit and a synchronizing signal detection method...

Servo circuit for generating a tracking error signal for optical di...

Programmed reproduction system for still picture recording/reproduc...

Automatic loading disc player

Automatic loading disc player

Tracking-servo device

Tracking servo control system for an information read-out system

Pick-up device positioning arrangement in an information disc player

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

Tone control circuit utilizing variable gain amplifier

Tone control device

Tone control device