| 摘要 |
PROBLEM TO BE SOLVED: To store data of two frames by using one frame memory, to store data of three frames by using two frame memories, and to process data at the same frequency as the driving frequency of a DDR memory, while using the DDR memory. SOLUTION: This signal processing device includes a signal processing part which receives and converts data, consisting of a 1st number of bits synchronizing with a 1st frequency clock from an external device and converts the data into data consisting of a 2nd number of bits and synchronizes the data of a second number of bits with a second frequency clock and outputs the synchronized data and two frame memories which store the data of the 2nd number of bits from the signal processing part and stores data of three frames. Consequently, video data of three frames can be stored in the two frame memory and are compared, and corrected video data are calculated. COPYRIGHT: (C)2005,JPO&NCIPI
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