Inventor
FUJIOKA SOUICHIRO
JP4 patents
Patents
4 patentsUS5321557AJun 14, 1994
Magnetic recording and reproducing apparatus having multiple magnetic heads
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations73
US5313346AMay 17, 1994
Tracking error detection system having at least two magnetic heads with opposite azimuths and circuitry for detecting tracking error by determining a phase difference of output signals from all circuits based on signals produced by the magnetic heads
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations72
US4891588AJan 2, 1990
Device for detecting rotation speed having feedback circuitry and improved frequency-response
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations71
US5299072AMar 29, 1994
Video and audio signal recording apparatus with editing-use erase heads
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations61