Patent ID: 8063910

Claim:
A method comprising: writing data to one of two frame buffers in write access cycles, each of the write access cycles having a write and a non-write sub-period, and concurrently reading out data to a display device from the other of the two frame buffers in read access cycles, each of the read access cycles having a read and a non-read sub-period, a switching opportunity occurring when a read access cycle is in a non-read sub-period; executing a buffer switch by switching the writing of data and the reading of data to the respective opposite frame buffer during a switching opportunity while a write access cycle is in a non-write sub-period; incrementing a count of the number of times a buffer switch is not executed during a switching opportunity because a write access cycle is in a write sub-period; and if the count exceeds a particular threshold, masking a write access cycle subsequent to the count exceeding the threshold.