Patent ID: 6950208

Claim:
A control method for a data communication apparatus capable of receiving binary image data having a first resolution and a second resolution lower than the first resolution, and color image data having the second resolution comprising: the first notification step of notifying a partner apparatus of an image data reception function having the first resolution and a color image data reception function as maximum receiving capacity; the determination step of determining whether the partner apparatus instructs transmission of color image data at the first resolution on the basis of the notification in the first notification step; and the second notification step of notifying the partner apparatus of an image data reception function having the second resolution and the color image data reception function as receiving capacity when transmission of color image data at the first resolution is determined in the determination step to be instructed; the history holding step of holding an execution history of the second notification step for each of a plurality of communication partners including the partner apparatus; and the control step of controlling which of the first and second notification steps is executed on the communication with the partner apparatus.