Camera system comprising color display and processor for decoding data blocks in printed coding pattern

A camera system comprising:

• a substrate having a coding pattern printed thereon, said coding pattern having at least one data block, wherein each data block contains a data area having an encoded control block, said control block containing encoded information regarding the size of data encoded in the data area;
• and
• a handheld digital camera device comprising:
• a digital camera unit comprising a first image sensor for capturing images and a color display for displaying captured images to a user;
• and
• an integral processor configured for:
• controlling operation of the first image sensor and color display;
• decoding an imaged coding pattern printed on a substrate;
• and
• performing an action in said handheld digital camera device based on the decoded coding pattern, wherein said decoding comprises the steps of:
• identifying the data block in the imaged coding pattern;
• decoding the control block to determine the size of data to be extracted from the data area;
• and
• decoding the coding pattern contained in the data area of the data block.