Abstract: Provided is a display apparatus including: a liquid crystal panel; a source driver configured to output a grayscale voltage to the liquid crystal panel; a timing controller configured to transmit a source control signal to the source driver; a scaler configured to transmit image data corresponding to content received from an external source to the timing controller; and a controller configured to adjust a driving scan rate of the liquid crystal panel to correspond to a set scan rate of the content, and control at least one of the scaler or the timing controller to adjust a data rate of an output signal based on the driving scan rate.

Abstract: Provided is a data management system that is configured to divide a table in a database into one or more partitions based on data included in a particular column included in the table, associate an encryption key with each partition of the partitions and store the encryption key in the memory, and execute cryptographic processing for data included in the partition by the encryption key being associated with the partition.