Facsimile and static presentation processing – Facsimile – Picture signal generator
Reexamination Certificate
2007-11-27
2007-11-27
Lee, Cheukfan (Department: 2625)
Facsimile and static presentation processing
Facsimile
Picture signal generator
C358S445000, C358S446000, C358S483000, C358S482000, C358S443000
Reexamination Certificate
active
10373205
ABSTRACT:
An image reading device includes a CCD which photoelectrically converts optical information and outputs an image signal in an analog form, a PGA which receives an output from the CCD, amplifies the output with a programmable gain, and outputs the output, an ADC which receives an output from the PGA, A/D-converts the output, and outputs an image signal in a digital form, and a CPU which calculates a gain which makes an output from the ADC match a reference value by using an output from the ADC and the reference value, thereby setting a gain for the PGA. This arrangement makes it possible to set a gain in a short period of time and shorten the first copy time in an image forming apparatus or MFP system using the image reading device of this invention.
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Kabushiki Kaisha Toshiba
Lee Cheukfan
Toshiba Tec Kabushiki Kaisha
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