An information output unit according to the present invention includes a first-gamma-correction-information storing unit that stores gamma correction information suitable for display of an image by a first liquid crystal display unit, a gamma correction unit that applies gamma correction based on the gamma correction information stored in the first-gamma-correction-information storing unit to inputted image information and outputs obtained image information to the liquid crystal display unit, a second gamma-correction-information storing unit that stores, when gamma correction is applied to the image information outputted by the gamma correction unit, gamma correction information for obtaining image information suitable for display of an image by a second liquid crystal display unit, and a control unit that outputs the gamma correction information stored in the second-gamma-correction-information storing unit to the liquid crystal display unit. Therefore, it is possible to obtain an information output unit that can make it unnecessary to perform operation in replacing a liquid crystal display unit and can prevent an increase in size of an apparatus, an increase in power consumption, and the like.