Abstract: The present invention relates to a system (10) for navigating and positioning an instrument (12, 40, 112) in a body (14). The instrument (12, 40, 112) is detectable by the system (10) and the system (10) displays a view to an operator. The instrument (12, 40, 112) is adapted to identify tissue parameters. The system (10) is adapted to display an image being a combined image of the interior of a body (14) and an indication of the tissue parameter at the appropriate earlier locations. The present invention further relates to a method (44) including determining tissue parameters and displaying the parameters in an image of a body (14). The present invention further relates to a software implemented method (44) for being executed on a digital processor. The present invention further relates to an instrument (12, 40, 112).

Abstract: A color display screen has a plurality of cells (2). Each cell (2) has a pixel (P) capable of providing a first output light of a first color and a second output light of a second color and a photosensitive device (D) for converting an optical display control signal (Li) into electrical signals (1). The optical display control signal (Li) includes information about the first output light and the second output light to control the first output light and the second output light. The photosensitive device (D) includes a decoder (DM) for decoding the information about the first and the second output light.

Abstract: The display screen (5) comprises a plurality of cells (2). Each cell (2) comprises a pixel (P) able to generate light (Lo) when driven by an electrical signal (I), a driver circuit (A) for providing the electrical signal (I) and a photosensitive device (D) for receiving optical display signals (Li) to control the pixel (P) via the driver circuit (A). The display system (6) has the display screen (5) and an optical image source (3) for transmitting optical display signals (Li) to each photosensitive device (D) of the plurality of cells (2).