Patent ID: 8195622

Claim:
A computer implemented method, comprising: encoding data, by a data processing system, into a first data section of a plurality of data sections in a file, the first data section including a first data value of a first type or a second type; and encoding data into a second data section of the plurality of data sections in the file, the second data section to include information to allow a decoder to perform a data check operation to verify the data of the second data section if the first data section includes the first data value of the first type, the first data section to include information to allow the decoder to determine whether to perform the data check operation to verify the data of the second data section, the decoder to skip the data check operation without verifying the data of the second data section if the first data section includes a first data value of the second type, wherein when the first data value is of the first type in the first data section, the encoding data in the first data section includes encoding information into a critical data chunk in an image data that indicates to the decoder that the data check operation will be performed.