Patent ID: 8228395

Claim:
A method for processing image frames in a digital still camera, said method comprising: receiving a first plurality of pixel values representing an image frame in a first format; storing said first plurality of pixel values in a memory; forming a second plurality of pixel values representing said image frame in a second format by processing said first plurality of pixel values; overwriting at least a part of said first plurality of pixel values in storing said second plurality of pixel values; and performing a first image processing operation on said first plurality of pixel values representing all of said image frame and a second image processing operation on said second plurality of pixel values; and storing said second plurality of pixel values starting from a start location which is earlier than a first location in said memory from which said first plurality of pixel values are stored, wherein said start location is chosen such that any required ones of the first plurality of pixel values for said first image processing operation is available at time instances of said performing when those pixel values would be required, wherein said storing comprises said overwriting.