Akira Hirota

Person

Chigasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Recording of frequency-multiplex signal on recording medium
- Patent number 5,062,008
- Issue date Oct 29, 1991
- Victor Company of Japan, Ltd.
- Yutaka Ichinoi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic video tape recording and reproducing apparatus
- Patent number 5,051,846
- Issue date Sep 24, 1991
- Victor Company of Japan, Ltd.
- Takuya Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Helical scan type magnetic recording and reproducing apparatus reco...
- Patent number 4,757,391
- Issue date Jul 12, 1988
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Magnetic recording apparatus for carrying out recording by selectiv...
- Patent number 4,719,518
- Issue date Jan 12, 1988
- Victor Company of Japan, Ltd.
- Koichi Kido
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Video signal reproducing apparatus having a noise reduction circuit
- Patent number 4,682,251
- Issue date Jul 21, 1987
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for recording a video signal sampled at frequency f.sub.s...
- Patent number 4,682,250
- Issue date Jul 21, 1987
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Chrominance signal recording apparatus utilizing digital sampling a...
- Patent number 4,646,165
- Issue date Feb 24, 1987
- Victor Company of Japan Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Video signal recording and reproducing apparatus
- Patent number 4,644,412
- Issue date Feb 17, 1987
- Victor Company of Japan, Ltd.
- Naomichi Nishimoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Combination of reproducing heads and a rotary transformer device
- Patent number 4,639,805
- Issue date Jan 27, 1987
- Victor Company of Japan, Ltd.
- Akira Hirota
- G11 - INFORMATION STORAGE
Information Patent Grant
Video signal delay circuit
- Patent number 4,635,116
- Issue date Jan 6, 1987
- Victor Company of Japan, Ltd.
- Akira Hirota
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording and reproducing apparatus for recording and reproducing a...
- Patent number 4,626,927
- Issue date Dec 2, 1986
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cue signal recording circuit for magnetic recording and reproducing...
- Patent number 4,626,934
- Issue date Dec 2, 1986
- Victor Company of Japan, Ltd.
- Masajhi Yoshida
- G11 - INFORMATION STORAGE
Information Patent Grant
Sound and video multiplex recording system
- Patent number 4,622,597
- Issue date Nov 11, 1986
- Victor Company of Japan, Limited
- Akira Hirota
- G11 - INFORMATION STORAGE
Information Patent Grant
Noise reducing system for video signal
- Patent number 4,618,893
- Issue date Oct 21, 1986
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Noise reducing system for video signal
- Patent number 4,607,285
- Issue date Aug 19, 1986
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Color video signal recording and/or reproducing system
- Patent number 4,593,327
- Issue date Jun 3, 1986
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Video signal processing apparatus with pre-emphasis and de-emphasis...
- Patent number 4,587,576
- Issue date May 6, 1986
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Noise reduction circuit for a video signal
- Patent number 4,563,704
- Issue date Jan 7, 1986
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit for reducing noise in a carrier chrominance signal
- Patent number 4,558,353
- Issue date Dec 10, 1985
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Video memory device
- Patent number 4,536,795
- Issue date Aug 20, 1985
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Color video signal recording and/or reproducing system
- Patent number 4,490,749
- Issue date Dec 25, 1984
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Magnetic recording and/or reproducing apparatus
- Patent number 4,486,789
- Issue date Dec 4, 1984
- Victor Company of Japan, Ltd.
- Akira Hirota
- G11 - INFORMATION STORAGE
Information Patent Grant
Audio signal recording and/or reproducing system for eliminating au...
- Patent number 4,476,501
- Issue date Oct 9, 1984
- Victor Company of Japan, Ltd.
- Akira Hirota
- G11 - INFORMATION STORAGE
Information Patent Grant
Video signal recording and/or reproducing system
- Patent number 4,425,584
- Issue date Jan 10, 1984
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Pilot signal recording and reproducing system
- Patent number 4,414,586
- Issue date Nov 8, 1983
- Victor Company of Japan, Ltd.
- Akira Hirota
- G11 - INFORMATION STORAGE
Information Patent Grant
Tracking control system in a magnetic reproducing apparatus
- Patent number 4,402,022
- Issue date Aug 30, 1983
- Victor Company of Japan, Ltd.
- Akira Hirota
- G11 - INFORMATION STORAGE
Information Patent Grant
Multiple-channel rotary transformer circuit in a magnetic recording...
- Patent number 4,364,098
- Issue date Dec 14, 1982
- Victor Company of Japan, Ltd.
- Akira Hirota
- G11 - INFORMATION STORAGE
Information Patent Grant
Video signal, speed-change reproducing system
- Patent number 4,342,053
- Issue date Jul 27, 1982
- Victor Company of Japan, Ltd.
- Akira Hirota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for controlling rotation of rotating structure
- Patent number 4,295,171
- Issue date Oct 13, 1981
- Victor Company of Japan, Ltd.
- Akira Hirota
- G11 - INFORMATION STORAGE
Information Patent Grant
System for recording and/or reproducing an audio signal which has b...
- Patent number 4,246,615
- Issue date Jan 20, 1981
- Victor Company of Japan, Limited
- Yuma Shiraishi
- G11 - INFORMATION STORAGE

Akira Hirota

Person

Patents Grantslast 30 patents

Recording of frequency-multiplex signal on recording medium

Magnetic video tape recording and reproducing apparatus

Helical scan type magnetic recording and reproducing apparatus reco...

Magnetic recording apparatus for carrying out recording by selectiv...

Video signal reproducing apparatus having a noise reduction circuit

Apparatus for recording a video signal sampled at frequency f.sub.s...

Chrominance signal recording apparatus utilizing digital sampling a...

Video signal recording and reproducing apparatus

Combination of reproducing heads and a rotary transformer device

Video signal delay circuit

Recording and reproducing apparatus for recording and reproducing a...

Cue signal recording circuit for magnetic recording and reproducing...

Sound and video multiplex recording system

Noise reducing system for video signal

Noise reducing system for video signal

Color video signal recording and/or reproducing system

Video signal processing apparatus with pre-emphasis and de-emphasis...

Noise reduction circuit for a video signal

Circuit for reducing noise in a carrier chrominance signal

Video memory device

Color video signal recording and/or reproducing system

Magnetic recording and/or reproducing apparatus

Audio signal recording and/or reproducing system for eliminating au...

Video signal recording and/or reproducing system

Pilot signal recording and reproducing system

Tracking control system in a magnetic reproducing apparatus

Multiple-channel rotary transformer circuit in a magnetic recording...

Video signal, speed-change reproducing system

System for controlling rotation of rotating structure

System for recording and/or reproducing an audio signal which has b...