Patent ID: 8363070

Claim:
A drive circuit comprising: a conversion section to convert input image data into output image data by using a table, corresponding to a current physical property, among at least three tables which are prepared respectively for different numerical ranges of a physical property of a display device, and each of which defines a relationship between input image data and output image data; an internal memory configured to store the at least three tables, including a lower table corresponding to a lower numerical range of the physical property, a middle table corresponding to a middle numerical range of the physical property and an upper table corresponding to a upper numerical range of the physical property, the number of said at least three tables is less, by at least one, than the number of all tables which are stored in an external memory and are provided for the different numerical ranges of the physical property, respectively; and a table managing section configured to, (i) obtain a table that corresponds to a numerical range of the physical property lower than the numerical range of the physical property corresponding to the lower table from the external memory so as to store the table in the internal memory, and delete the upper table from internal memory, if the conversion section newly uses the lower table, and (ii) obtain a table that corresponds to a numerical range of the physical property greater than the numerical range of the physical property corresponding to the upper table from the external memory so as to store the table in the internal memory, and delete the lower table from the internal memory, if the conversion section newly uses the upper table, wherein the table managing section; allows a table corresponding to a numerical range of the physical property that is adjacent to the numerical range of the physical property of the lower table to be stored in the internal memory, does not allow a table corresponding to a numerical range of the physical property that is not adjacent to either the numerical range of the physical property of the lower table or the numerical range of the physical property of the upper table not to be stored in the internal memory, and allows a table corresponding to a numerical range of the physical property that is adjacent to the numerical range of the physical property of the upper table to be stored in the internal memory.