| 释义 |
DictionarySeeCCDSuper CCD
Super CCDA type of CCD sensor from Fujifilm that is used in its digital cameras. Super CCD uses a honeycomb structure of octagon-shaped light sensors (photodiodes) at 45 degree angles rather than 90 degrees. Introduced in 2000 with its FinePix camera line, the diagonal design accommodates larger photodiodes that are closer together than the traditional row-column arrangement. In addition, the sensors more closely resemble nature and human vision. In 2003, Fujifilm introduced the following enhancements.
Super CCD HR (High Resolution)
After the Super CCD captures the image, Fuji's signal processing doubles the number of pixels for output, creating new pixels based on the colors from surrounding pixels.
Super CCD SR (Super Dynamic Range)
Mimicking the sensitivity and greater tonal range of analog color film, Super CCD SR uses a large and small photodiode for each color pixel (photosite). The large S-pixel is sensitive to normal and dark details, while the smaller R-pixel is less sensitive and used to capture bright details. The output of both sensors is mixed by the camera. In its second generation, the R-pixel is relocated in order to make the S-pixel larger.
MedicalSeeVENOUS ACCESS DEVICES: A. An over-the-needle catheter; B. An inside-the-needle catheter. VENOUS ACCESS DEVICES: A. An over-the-needle catheter; B. An inside-the-needle catheter.venous access deviceA specially designed catheter for gaining and maintaining access to the venous system. This device provides access for patients who require intravenous fluids or medications for several days or more, e.g., those having a bone marrow transplant or who are receiving long-term total parenteral nutrition. See: venous port See: illustrationventricular assist device Abbreviation: VAD
A pump to treat heart failure. It helps the ventricles to contract and move blood to the lungs and/or the aorta. See: left ventricular assist device
charge-coupled device Abbreviation: CCD
A device used in video and digital imaging (such as in CT scanning) that creates electronic images from light. See also: device">CCD catheter." href="javascript:eml2('davisTab', 'd15a.jpg')"> VENOUS ACCESS DEVICES: A. An over-the-needle catheter; B. An inside-the-needle catheter.VENOUS ACCESS DEVICES: A. An over-the-needle catheter; B. An inside-the-needle catheter.venous access deviceA specially designed catheter for gaining and maintaining access to the venous system. This device provides access for patients who require intravenous fluids or medications for several days or more, e.g., those having a bone marrow transplant or who are receiving long-term total parenteral nutrition. See: venous port See: illustrationventricular assist device Abbreviation: VAD
A pump to treat heart failure. It helps the ventricles to contract and move blood to the lungs and/or the aorta. See: left ventricular assist device
charge-coupled device Abbreviation: CCD
A device used in video and digital imaging (such as in CT scanning) that creates electronic images from light. See also: device |
