Furthermore, in order to efficiently transmit image data of a larger size than the
character data, a method of sending data after compression is implemented. If the bit
string of Figure 2 is viewed in a sequence from top left, it is understood that there are 10
consecutive 0s followed by 34 consecutive 1s, and then 20 consecutive 0s. This
consecutive number of the same value is called a run length. Here, a method for using
this run length to compress image data is considered.