Patent ID: 7328846

Claim:
A communication method performed between a display apparatus having a display screen capable of displaying moving pictures and a light receiving apparatus having a light receiving means capable of receiving light by using a two-dimensional dynamic code which is a two-dimensional code changing along a time axis, the communication method comprising the steps of: configuring the two-dimensional dynamic code so as to include a plurality of symbols, the symbols including a data symbol which is a two-dimensional code expressed with a format for data transmission, and an anchor symbol which is a two-dimensional code expressed with a format for anchor transmission; and displaying the data symbol on the display screen in the display apparatus, along the time axis, while displaying the anchor symbol on the display screen every time the data symbol is displayed once or a plurality of times, wherein: the two-dimensional dynamic code further includes a synchronous symbol which is a two-dimensional code expressed with a format for synchronization and a header symbol which is a two-dimensional code expressed with a format for header; in the display apparatus, before the data symbol and the anchor symbol are displayed, the synchronous symbol and the header symbol are displayed on the display screen; and in the light receiving apparatus, before the data symbol and the anchor symbol are read, the synchronous symbol and the header symbol are read by the light receiving means.