Drive circuit and display device

A drive circuit, comprising:

• conversion section to convert input image data into output image data by using tables, which respectively correspond to different predetermined physical properties of a display device, and each of which defines a relationship between input data and output data;
• table creating section, in a case where a current physical property of the display device is changed into another physical property to which the current physical property is switched over, to create a table that the conversion section uses after the physical property is changed, the table creating section creating the table by applying a difference table to a table corresponding to the current physical property, the difference table being based on a difference between the table corresponding to the current physical property and a table corresponding to said another physical property;
• said drive circuit further comprising:
• an internal memory for storing at least three difference tables which respectively correspond to a plurality of the physical properties which are continuously switched over in the display device, the number of said at least three difference tables is less, by at least one, than the number of all of difference tables which are stored in an external memory and are provided for the different physical properties, respectively, the difference table being based on a difference between a table corresponding to a certain physical property and another table corresponding to another physical property to which the certain physical property is switched over;
• difference table managing section to (i) obtain a difference table located before a first end difference table from the external memory so as to store the difference table in the internal memory, and deleting a second end difference table from the internal memory, in a case where the table creating section newly uses the first end difference table, and (ii) obtain a difference table located after the second end difference table from the external memory so as to store the difference table in the internal memory, and delete the first end difference table from the internal memory, in a case where the table creating section newly uses the second end difference table, the first and second end difference tables being stored in the internal memory, a difference table located after the first end difference table being stored in the internal memory but a difference table located before the first end difference table not being stored in the internal memory, and a difference table located before the first end difference table being stored in the internal memory but a difference table located after the second end difference table not being stored in the internal memory.