Display control apparatus, display control method, and system
地域：
Tokyo
摘要
A multifunction inkjet printer that displays an image on a display device includes: an operation display unit configured to receive an instruction from a user; and a CPU configured to control the display device to display an image, wherein, in a state where display on the display device is being performed at a first refresh rate, in response to the operation display unit receiving an instruction for displaying a code to be captured by a mobile terminal, the CPU is configured to control the display device to display the code at a second refresh rate that has a higher frequency than the first refresh rate.
說明書
The present disclosure relates to display control for displaying a code.
In recent years, a two-dimensional code such as a QR code (registered trademark) is displayed on a display device of an electronic apparatus, so that a user reads the two-dimensional code by use of a camera such as a mobile phone. Japanese Patent Laid-Open No. 2016-62324 discloses a technology of performing normal display with a contrast ratio for normal display and displaying a code with a contrast ratio for displaying a code.
However, there is a case in which interference fringes, which are caused by interference between a screen update timing of the display device of the electronic apparatus and a frame update timing of the camera, emerge on the screen of the camera, and the code cannot be properly read.
The display control apparatus according to an aspect of the present disclosure is a display control apparatus that displays an image on a display unit, the display control apparatus including: a reception unit configured to receive an instruction from a user; and a control unit configured to control the display unit to display an image, wherein, in a state where display on the display unit is being performed at a first refresh rate, in response to the reception unit receiving an instruction for displaying a code to be captured by a camera, the control unit is configured to control the display unit to display the code at a second refresh rate that has a higher frequency than the first refresh rate.
權(quán)利要求
What is claimed is:1. A display control apparatus that displays an image on a display unit, the display control apparatus comprising:at least one processor causing the display control apparatus to act as a plurality of units comprising:(1) a reception unit configured to receive an instruction based on a user input; and (2) a control unit configured to control the display unit to display an image, wherein the control unit causes the display unit to display, at a first refresh rate, a screen in which is not included a code to be captured by a camera provided on a terminal apparatus, and wherein the control unit causes the display unit to display, at a second refresh rate that has a higher frequency than the first refresh rate, a screen in which the code is included so that the terminal apparatus is able to access information obtained by reading the code. 2. The display control apparatus according to claim 1 , wherein, in response to an instruction received by the reception unit while the code is being displayed on the display unit, the control unit is configured to control the display unit to display, at the first refresh rate, an image displayed prior to the code. 3. The display control apparatus according to claim 1 , wherein, in a case where the reception unit does not receive an instruction during a predetermined time period from a timing where the code is displayed on the display unit, the control unit is configured to control the display unit to enter into a sleep mode. 4. The display control apparatus according to claim 1 , wherein, in a case where a predetermined time period in which the code is displayed on the display unit at the second refresh rate has elapsed, the control unit is configured to control the display unit to display the code at a third refresh rate that has a higher frequency than the second refresh rate. 5. The display control apparatus according to claim 4 , wherein, in a case where the reception unit does not receive an instruction during a predetermined time period from a timing where the code is displayed on the display unit at the third refresh rate, the control unit is configured to control the display unit to enter into a sleep mode. 6. The display control apparatus according to claim 3 , wherein, if the code is to be displayed on the display unit in a case where the display unit returns from the sleep mode, the control unit is configured to control the display unit to display the code at a refresh rate used at a timing where the display unit enters into the sleep mode, andwherein, if the code is not to be displayed on the display unit in a case where the display unit returns from the sleep mode, the control unit is configured to control the display unit to display an image at the first refresh rate. 7. The display control apparatus according to claim 1 , wherein, in a case where an information amount of the code to be displayed is equal to or smaller than a predetermined value, the control unit is configured to control the display unit to display the code at the second refresh rate, andwherein, in a case where the information amount of the code to be displayed is larger than the predetermined value, the control unit is configured to control the display unit to display the code at a fourth refresh rate that has a higher frequency than the second refresh rate. 8. The display control apparatus according to claim 1 , wherein the code corresponds to a two-dimensional code. 9. The display control apparatus according to claim 1 , wherein the second refresh rate has a higher frequency than a frame rate of the camera that reads the code. 10. The display control apparatus according to claim 9 , wherein the second refresh rate corresponds to a frequency that is more than twice the frame rate of the camera that reads the code. 11. The display control apparatus according to claim 9 , wherein the first refresh rate and the second refresh rate have frequencies that are higher than the frame rate of the camera that reads the code. 12. The display control apparatus according to claim 1 , wherein the display unit corresponds to an organic electro-luminescence (EL) display device in which a passive matrix driving system is employed. 13. The display control apparatus according to claim 1 , further comprising:the display unit; and a printing unit configured to print an image on a print sheet. 14. A display control method for displaying an image on a display unit, the display control method comprising:receiving an instruction based on a user input; and controlling the display unit to display an image, wherein the display unit is controlled to display, at a first refresh rate, a screen in which is not included a code to be captured by a camera provided on a terminal apparatus, and wherein the display unit is controlled to display, at a second refresh rate that has a higher frequency than the first refresh rate, a screen in which the code is included so that the terminal apparatus is able to access information obtained by reading the code. 15. A system including (a) a display control apparatus that displays an image on a display unit and (b) a camera that captures an image at a predetermined frame rate, the display control apparatus comprising:at least one processor causing the display control apparatus to act as a plurality of units comprising:(1) a reception unit configured to receive an instruction based on a user input; and (2) a control unit configured to control the display unit to display an image, wherein the control unit causes the display unit to display, at a first refresh rate, a screen in which is not included a code to be captured by the camera, the camera being provided on a terminal apparatus, and wherein the control unit causes the display unit to display, at a second refresh rate that has a higher frequency than the first refresh rate, a screen in which the code is included so that the terminal apparatus is able to access information obtained by reading the code.
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