Operation input system, electronic device and mobile terminal

1. An operation input system, comprising an electronic device having a display portion and a mobile terminal capable of near distance wireless communication with the electronic device, wherein

the electronic device is provided with the display portion which, when proximity of the mobile terminal is detected in a state of displaying a specific screen on the display portion, displays the specific screen but not operation input information associated with the specific screen in advance, and a transmitting portion which transmits the operation input information to the mobile terminal,

the mobile terminal is provided with a display portion which displays an operation input screen based on the operation input information transmitted from the electronic device, and a transmitting portion which transmits operation content instructed by a user from the operation input screen to the electronic device, and

the electronic device is provided with an updating portion which updates the specific screen in accordance with the operation content transmitted from the mobile terminal.

2. The operation input system according to claim 1 , wherein

when connection of the near distance wireless communication with the mobile terminal is established, the electronic device establishes connection of other wireless communication capable of longer-distance wireless communication than the near distance wireless communication with the mobile terminal.

3. The operation input system according to claim 1 , wherein

as the operation input information, the transmitting portion of the electronic device transmits ID information of an operation input item associated with the specific screen in advance to the mobile terminal,

the mobile terminal is provided with a storage portion in which operation input screen information associated with the ID information of the operation input item is stored, and

the display portion of the mobile terminal displays the operation input screen in accordance with the operation input screen information stored in the storage portion.

4. The operation input system according to claim 3 , wherein

the operation input item is set by the user in advance.

5. The operation input system according to claim 3 , wherein

in a case where the electronic device is an image forming apparatus, the specific screen is a preview screen, and the operation input item is an item concerning editing of a print preview image displayed on the preview screen.

6. The operation input system according to claim 3 , wherein

in a case where the electronic device is an electronic blackboard, the specific screen is a handwriting input screen, and the operation input item is an item concerning editing of a handwriting input image displayed on the handwriting input screen.

7. The operation input system according to claim 1 , wherein

as the operation input information, the transmitting portion of the electronic device transmits operation input screen information including ID information of an operation input item associated with the specific screen in advance to the mobile terminal, and

the display portion of the mobile terminal displays the operation input screen in accordance with the operation input screen information.

8. An electronic device having a display portion and capable of near distance wireless communication with a mobile terminal, wherein

the electronic device is provided with the display portion which, when proximity of the mobile terminal is detected in a state of displaying a specific screen on the display portion, displays the specific screen but not operation input information associated with the specific screen in advance, and a transmitting portion which transmits the operation input information to the mobile terminal,

a receiving portion which receives operation content instructed by a user for the operation input information from the mobile terminal, and

an updating portion which updates the specific screen in accordance with the operation content received by the receiving portion.