Image forming apparatus, method of controlling image forming apparatus, and storage medium

Abstract

An image forming apparatus of the present invention includes a human detection unit configured to detect a human, an operation unit including a display device configured to display an operation screen, a touch panel configured to detect a touch operation of the operation screen, a control unit configured to return the operation unit from a first power state in which the display device does not display the operation screen to a second power state in which the display device displays the operation screen based on a detection result of the human detection unit, and an invalidation unit configured to invalidate a touch operation of the operation screen for a predetermined period after the returning starts.

1 - 11 . (canceled) 
     
     
         12 . A data processing apparatus comprising:
 a human detection sensor configured to sense a human;   a display unit;   a user operation detection unit configured to detect a user operation to the display unit; and   a display control unit configured to display a screen including a plurality of buttons on the display unit based on a sensing result of the human detection sensor in a state that the display unit does not display the screen, display the screen including the plurality of buttons on the display unit based on a user operation to the display unit detected by the user operation detection unit in a state that the display unit does not display the screen and change the screen to a first screen according to the user operation to a first button of the plurality of buttons detected by the user operation detection unit,   a time-counting unit configured to count time for a certain period, wherein the time-counting unit starts counting in a case where the human detection sensor senses the human,   wherein the time-counting unit does not change the screen to the first screen from when the counting is started until when the certain period is passed even in a case where the user operation detection unit detects the user operation, and   the time-counting unit resets a counter of a timer in a case where the user operation detection unit detects multiple predetermined operations by a user.   
     
     
         13 . The data processing apparatus according to  claim 12 , wherein the certain period includes a time period after the screen including the plurality of buttons is displayed. 
     
     
         14 . The data processing apparatus according to  claim 12 , wherein the display control unit receives a signal corresponding to the user operation to the first button detected by the user operation detection unit and does not output a signal relating to the received signal during the certain period. 
     
     
         15 . The data processing apparatus according to  claim 14 , wherein the signal corresponding to the user operation to the first button detected by the user operation detection unit is a coordinate data signal indicating a position of the first button. 
     
     
         16 . The data processing apparatus according to  claim 12 , wherein the display control unit receives a signal corresponding to the user operation to the first button detected by the user operation detection unit and does not generate an image corresponding to the first screen during the certain period. 
     
     
         17 . The data processing apparatus according to  claim 16 , wherein the signal corresponding to the user operation to the first button detected by the user operation detection unit is a coordinate data signal indicating a position of the first button. 
     
     
         18 . The data processing apparatus according to  claim 12 , wherein the user operation detection unit is a touch panel 
     
     
         19 . The data processing apparatus according to  claim 12 , wherein the state that the display unit does not display the screen is a state that nothing is displayed on the display unit. 
     
     
         20 . The data processing apparatus according to  claim 12 , wherein the data processing apparatus has a print function. 
     
     
         21 . The data processing apparatus according to  claim 12 , wherein the data processing apparatus has a copy function. 
     
     
         22 . The data processing apparatus according to  claim 12 , wherein the human detection sensor is an infrared sensor. 
     
     
         23 . The data processing apparatus according to  claim 12 , wherein the human detection sensor is an ultrasound type sensor. 
     
     
         24 . The data processing apparatus according to  claim 12 , wherein the multiple predetermined operations by the user are an operation of repeatedly touching the display unit. 
     
     
         25 . A method of controlling a data processing apparatus comprising a human detection sensor configured to sense a human, a display unit, a user operation detection unit, and a time-counting unit configured to count time for a certain period configured to detect a user operation to the display unit, the method comprising:
 displaying a screen including a plurality of buttons on the display unit based on a sensing result of the human detection sensor in a state that the display unit does not display the screen;   displaying the screen including the plurality of buttons on the display unit based on a user operation to the display unit detected by the user operation detection unit in a state that the display unit does not display the screen; and   changing the screen to a first screen according to the user operation to a first button of the plurality of buttons detected by the user operation detection unit,   
       wherein a timer-counting unit starts counting in a case where the human detection sensor senses the human and does not change the screen to the first screen from when the counting is started until when the certain period is passed even in a case where the user operation detection unit detects the user operation, and 
       the time-counting unit resets a counter of a timer in a case where the user operation detection unit detects multiple predetermined operations by a user.