1. A packet generation device comprising: a first generation unit that generates a packet having a b-byte payload including a plurality of sets of first data corresponding to a pixels from the first data having m-bit image information for each pixel; and a second generation unit that generates a packet having a b-byte payload including a plurality of sets of second data corresponding to a pixels from the second data having n-bit image information for each pixel (where m<n), wherein a is defined so that (n−m)×a becomes multiples of 8, and wherein b is defined based on a least common multiple of the number of bytes of sets of the first data corresponding to a pixels and the number of bytes of sets of the second data corresponding to a pixels.