Apple Inc.

Mathew W Hernandez

Richard D Cappels, Sr

Jesse Michael Devine

A pixel matrix preferably containing nine pixels is analyzed to determine whether or not all of the image values for the pixels in the pixel matrix correspond to a full saturation level. If the image values do correspond to full saturation level, preferably the center pixel is produced using a variably reduced toner output. If all of the image values do not correspond to full saturation level, the center pixel is produced using conventional methods. The system of the preferred embodiment is comprised of an input buffer for storing the image values, a comparator for comparing the image values with a toner modification value to determine if the pixel or pixels should be produced using a variably reduced toner output. The pixels are then preferably stored temporarily in an output buffer and then sent to a memory to be produced.

System and method for variable toner output in output devices

Reflection wand

A system for correcting an output device for the effects reflected ambient illumination comprises an output device, a calibration memory, a reflectivity memory, a system memory, a processor, an input device, a video card, a color display memory, and a reflection device of known reflectivity. The color display memory stores a first graphical interface and a second graphical interface. The first graphical interface displays a range of intensities of outputs that the display device can generate. The second graphical interface displays a range of hues that the display device can generate. The reflection device defines an aperture. The reflection device is compared to the first graphical interface and the second graphical interface by viewing the interfaces through the aperture. The present invention includes a method for compensating an output device for reflected ambient illumination. The system receives a first input of an intensity of the first graphical interface that appears to match the ambient illumination reflected from the reflection device; the system then receives a second input of a hue of the second graphical interface that appears to match the ambient illumination reflected from the reflection device. The system determines the intensity and hue of the ambient illumination reflected from the output device by matching the intensity and hue of the ambient illumination reflected from the reflection device with the output of the output device. The system then adjusts the outputs of the output device to compensate for the reflected ambient illumination.

System and method for adjusting the illumination characteristics of an

A system for correcting an output device for the effects of reflected ambient illumination comprises a reflection device of known reflectivity. The color display memory stores a first graphical interface and a second graphical interface. The first graphical interface displays a range of intensities of outputs that the display device can generate. The second graphical interface displays a range of hues that the display device can generate. The reflection device has a target surface which defines an aperture. The ambient light reflecting from the target surface is compared to the first graphical interface and to the second graphical interface by viewing the interfaces through the aperture. The system receives a first input of an intensity of the first graphical interface that appears to match the ambient illumination reflected from the reflection device; the system then receives a second input of a hue of the second graphical interface that appears to match the ambient illumination reflected from the reflection device. The system determines the intensity and hue of the ambient illumination reflected from the output device by matching the intensity and hue of the ambient illumination reflected from the reflection device with the output of the output device. The system then adjusts the outputs of the output device to compensate for the reflected ambient illumination.

System to determine the color of ambient light for adjusting the

A system for compensating the output of an output device to eliminate reflected ambient illumination comprises a display device, a calibration memory, a reflectivity memory, a memory, a processor, an input device, a video card, and an achromatic card that serves as a standard for comparison to the output of the output device. The reflectivity memory stores the reflectivity characteristics of the output device. The calibration memory stores the optical characteristics of the output device. The memory stores the reflectivity characteristics of the achromatic card, data, and program instruction steps of the system. The output of the output device is adjusted to match the ambient illumination reflected from the achromatic card. The processor then determines the tristimulus values of the ambient illumination through the known tristimulus values of the output generated by the output device, the reflectivity characteristics of the achromatic card, and the reflectivity characteristics of the output device. The processor then uses the tristimulus values of the ambient illumination to determine the bias setting of the output device to compensate all outputs generated by the output device for the ambient illumination reflected from the output device.

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Half Moon Bay, CA, United States of America

Mathew W Hernandez