White light enhanced color field sequential projection
Color filter wheel for endoscopes and processing of generated color Patent #: 5278639
ApplicationNo. 085978 filed on 05/27/1998
US Classes:348/743, With moving color filters348/180MONITORING, TESTING, OR MEASURING
ExaminersPrimary: Harvey, David E.
Attorney, Agent or Firm
International ClassH04N 009/12
AbstractA display system using red, green, blue, and white light. The system derives data for the white portion of a color wheel or a white device from the red, green and blue data. The white portion of the color wheel is controlled as if it were another primary color on the wheel. Errors are prevented by a correction applied if the unfiltered light from the source has a different color temperature than the white light produced using the red, green and blue segments of the color wheel, or the devices for those colors. Analysis is performed on the data to determine if white light is necessary to be added to each frame of data.