Inventor
SHIRAI HIDEMICHI
JP3 patents
Patents
3 patentsUS4442461AApr 10, 1984
Signal recording and/or reproducing technique
SONY CORP30 citations90
US4734903AMar 29, 1988
Level control circuit for light beam recording apparatus
SONY CORP3 citations59
US4757490AJul 12, 1988
Modulation abnormality detector for optical sound-recording system
SONY CORP1 citations49