FT17P

The FT17N is a NTSC/EIA-compatible image sensor which is provided with a 12-phase vertical transport clock structure in the image section.

The FT17P image sensor is a PAL/CCIR vesion of Philips Semiconductors' dual aspect ratio image sensor, which is provided with a 12-phase vertical transport clock structure in the image section.

By selecting the appropriate phase type of the vertical image clock pulses it is possible to put the image sensor in the required aspect ratio mode. In the 4:3 aspect ratio mode a virtual 4- phase mode is applied and in the 16:9 mode a virtual 3-phase mode is applied.

Offering the advantage of optimizing the performance of a switchable camera in both 4:3 and 16:9 aspect ratio modes, the frame transfer technology supports the same number of active lines and active pixels in both modes. The image diagonals of these formats are within the tolerances of the required optical devices, making FT17P is possible to use the same camera lenses for both aspect ratio modes. Now the camera manufacturer can construct a switchable camera in which the selected aspect ratio mode is purely determined by the electronic circuitry's.