Inventor
EMA HIDETOSHI
JP30 patents
⚠️ This page may combine multiple inventors who share the name “EMA HIDETOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
27 patentsUS6498617B1Dec 24, 2002
Pulse width modulation circuit, optical write unit, image forming apparatus and optical write method
RICOH KK159 citations99
US6791596B2Sep 14, 2004
Method and apparatus for image forming capable of effectively generating pixel clock pulses
RICOH KK84 citations98
US6731317B2May 4, 2004
Pulse modulation signal generation circuit, and semiconductor laser modulation device, optical scanning device and image formation device using the same
RICOH KK84 citations98
US5784091AJul 21, 1998
Image forming system using digital ASIC and analog ASIC for processing image data and controlling semiconductor laser, and half-tone pixel representing method
RICOH KK107 citations98
US6118798ASep 12, 2000
Semiconductor laser control system
RICOH KK63 citations96
US5946334AAug 31, 1999
Semiconductor laser control system
RICOH KK85 citations96
US6917639B2Jul 12, 2005
Laser driver circuit
RICOH KK61 citations95
US5237579AAug 17, 1993
Semiconductor laser controller using optical-electronic negative feedback loop
RICOH KK44 citations93
US5138623AAug 11, 1992
Semiconductor laser control device
RICOH KK48 citations93
US5036519AJul 30, 1991
Semiconductor laser controller
RICOH KK51 citations93
US7684531B2Mar 23, 2010
Data recovery method and data recovery circuit
RICOH KK29 citations92
US7200091B2Apr 3, 2007
Light source driving unit and optical storage apparatus
RICOH KK18 citations92
US7193957B2Mar 20, 2007
Light source drive, optical information recording apparatus, and optical information recording method
RICOH KK24 citations92
US5258780ANov 2, 1993
Beam recorder forming low density dots
RICOH KK50 citations92
US5050177ASep 17, 1991
Laser diode driving circuit
RICOH KK22 citations92
US7746971B2Jun 29, 2010
Data recovery method, data recovery circuit, data transmitting/receiving apparatus and information processing apparatus
RICOH KK10 citations84
US7142486B2Nov 28, 2006
Signal processing method and signal processing apparatus
RICOH KK12 citations84
US7050080B2May 23, 2006
Image forming apparatus for controlling image writing by adjusting image clock
RICOH KK19 citations84
US7791634B2Sep 7, 2010
Pixel clock generator, pulse modulator, and image forming apparatus
RICOH KK12 citations83
US7518969B2Apr 14, 2009
Light source driving unit and optical storage apparatus
RICOH KK6 citations74
US6954415B2Oct 11, 2005
Light source drive, optical information recording apparatus, and optical information recording method
RICOH KK10 citations74
US6442183B1Aug 27, 2002
Semiconductor laser drive control circuit and image forming system using the same
RICOH KK10 citations74
US5325160AJun 28, 1994
Half tone recording method and light source device for writing
RICOH KK16 citations73
US7423940B2Sep 9, 2008
Signal processing method and signal processing apparatus
RICOH KK3 citations63
US6590599B2Jul 8, 2003
Apparatus and method for equivalently changing a write clock frequency
RICOH KK2 citations63
US7573790B2Aug 11, 2009
Light source driving unit and optical storage apparatus
RICOH KK0 citations52
US7480230B2Jan 20, 2009
Light source drive, optical information recording apparatus, and optical information recording method
RICOH KK0 citations52