Electronic device, cover device, and control method for recognizing signals and controlling a display module of electronic device

A cover device, comprising:

• a first cover including a coil;
• a second cover including a magnetic substance;
• a first part foldably connecting the first cover to the second cover;
• and
• an input device disposed at the first cover,
• wherein the cover coil is used to generate a first signal when at least a portion of the cover device is attached to an electronic device and the first cover approaches a digitizer panel of the electronic device,
• wherein the second cover includes a first sub-cover foldably connected to the first cover through the first part, second part and a second sub-cover foldably connected to the first sub-cover through a second part,
• wherein the magnetic substance is disposed at the second sub-cover,
• wherein the magnetic substance is detected by a sensor of the electronic device such that the electronic device identifies that at least a portion of the cover device is attached to a rear surface of the electronic device, and
• wherein when the first sub-cover is detached from the rear surface of the electronic device, the second sub-cover is configured to be tilted with respect to the first sub-cover such that the cover device supports the electronic device with a specific angle.

A method of operating an electronic device comprising at least one processor and a display including a display panel and a digitizer panel, the method comprising:

• identifying, by the at least one processor, whether at least a portion of a cover device including a first cover and a second cover is attached to a rear surface of a housing of the electronic device,
• transmitting, by the at least one processor, a confirmation command to the digitizer panel in response to at least a portion of the cover device being attached to the rear surface of the housing,
• controlling, by the at least one processor, the digitizer panel to detect a first signal executed based on the confirmation command when the first cover including a coil approaches the digitizer panel, and
• controlling, by the at least one processor, an operation of the display panel based on the detected first signal.