Patent ID: 11915455
Assignee: IMAGINATION TECHNOLOGIES LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 10:
11. The method of claim 10, wherein:
the two-dimensional block of second values is divided into at least one size of sub-blocks of second values;
the method further comprising dynamically selecting which of the two-dimensional block of second values and the sub-blocks of second values are to be stored in compressed format;
the header further comprising:
information for the two-dimensional block of second values indicating whether the two-dimensional block of second values is in compressed format,
information for each sub-block of second values indicating whether that sub-block of second values is in compressed format, and
for each block and sub-block of second values that is in compressed format, common base information that is common to the second values of that block or sub-block; and

the body further comprising:
for each second value that forms part of a block or sub-block of second values that is in compressed format, a fixed-length parameter for that second value that is zero, one or more than one bits in length, that second value being obtainable from the common base information for that block or sub-block and the fixed-length parameter for that second value; and
for each second value that does not form part of a block or sub-block of second values that is in compressed format, that second value.