Hitoshi Hirata

Person

Saitama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Audio signal modulating system with pre-emphasis
- Patent number 5,448,757
- Issue date Sep 5, 1995
- Pioneer Electronic Corporation
- Hitoshi Hirata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Notification system with voice in an audio system
- Patent number 5,287,333
- Issue date Feb 15, 1994
- Pioneer Electronic Corporation
- Hitoshi Hirata
- G11 - INFORMATION STORAGE
Information Patent Grant
Muting circuit for AM stereophonic receiver
- Patent number 4,490,838
- Issue date Dec 25, 1984
- Pioneer Electronic Corporation
- Akira Nishioka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
PLL Detection circuit having dual bandwidth loop filter
- Patent number 4,482,869
- Issue date Nov 13, 1984
- Pioneer Electronic Corporation
- Hitoshi Hirata
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Detector circuit having AGC function
- Patent number 4,471,311
- Issue date Sep 11, 1984
- Pioneer Electronic Corporation
- Hitoshi Hirata
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Sound system having suppression of AM stereophonic receiving circui...
- Patent number 4,468,537
- Issue date Aug 28, 1984
- Pioneer Electronic Corporation
- Tatsuo Numata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
PLL Detection circuit
- Patent number 4,433,308
- Issue date Feb 21, 1984
- Pioneer Electronic Corporation
- Hitoshi Hirata
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Stereo pilot signal eliminating circuit for AM stereophonic receiver
- Patent number 4,409,436
- Issue date Oct 11, 1983
- Pioneer Electronic Corporation
- Tatsuo Numata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Detector for sub signal of modulated AM stereophonic signal
- Patent number 4,404,428
- Issue date Sep 13, 1983
- Pioneer Electronic Corporation
- Hitoshi Hirata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Muting circuit for AM stereophonic receiver
- Patent number 4,383,136
- Issue date May 10, 1983
- Pioneer Electronic Corporation
- Tatsuo Numata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Current-controlled type division circuit
- Patent number 4,311,928
- Issue date Jan 19, 1982
- Pioneer Electronic Corporation
- Hitoshi Hirata
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Quadrature receiver
- Patent number 4,273,958
- Issue date Jun 16, 1981
- Pioneer Electronic Corporation
- Hitoshi Hirata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hitoshi Hirata

Person

Patents Grantslast 30 patents

Audio signal modulating system with pre-emphasis

Notification system with voice in an audio system

Muting circuit for AM stereophonic receiver

PLL Detection circuit having dual bandwidth loop filter

Detector circuit having AGC function

Sound system having suppression of AM stereophonic receiving circui...

PLL Detection circuit

Stereo pilot signal eliminating circuit for AM stereophonic receiver

Detector for sub signal of modulated AM stereophonic signal

Muting circuit for AM stereophonic receiver

Current-controlled type division circuit

Quadrature receiver