Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
  • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
  • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
  • G09G5/37—Details of the operation on graphic patterns
  • G09G5/373—Details of the operation on graphic patterns for modifying the size of the graphic pattern
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
  • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
  • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
  • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
  • G06Q20/00—Payment architectures, schemes or protocols
  • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
  • G06Q20/32—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using wireless devices
  • G06Q20/326—Payment applications installed on the mobile devices
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
  • G06Q20/00—Payment architectures, schemes or protocols
  • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
  • G06Q20/32—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using wireless devices
  • G06Q20/327—Short range or proximity payments by means of M-devices
  • G06Q20/3274—Short range or proximity payments by means of M-devices using a pictured code, e.g. barcode or QR-code, being displayed on the M-device
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
  • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
  • G09G5/10—Intensity circuits
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
  • G09G2360/00—Aspects of the architecture of display systems
  • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
  • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light

Definitions

• This disclosure relates to a program, a display control device, and a display control method.
• Patent Document 1 describes an information code reading system in which, when a display change instruction is obtained from a payment device by decoding an instruction code captured by an imaging unit in a mobile terminal, the display unit is controlled by a control unit to change the display state of the payment code in accordance with the display change instruction.
• Patent Document 1 in order for the mobile terminal to change the display state of the payment code, the reading device must issue a display change instruction, which does not sufficiently improve user convenience.
• This point is not limited to payment codes as in Patent Document 1.
• Conventional technology has not been able to sufficiently improve user convenience when the code screen is displayed.
• One of the purposes of this disclosure is to increase user convenience.
• the program disclosed herein causes the display control device to function as a display control unit that displays a code screen containing a code on the display unit of the display control device, and as a light information acquisition unit that acquires light information related to the light to the display control device when the code screen is displayed on the display unit, and the display control unit changes the display of the code screen based on the light information.
• This disclosure improves user convenience.
• FIG. 1 is a diagram illustrating an example of a hardware configuration of a display control system.
• FIG. 1 is a diagram illustrating an example of how a user uses a payment service.
• 10A and 10B are diagrams illustrating an example of a change in the attitude of the display control device when reading a code.
• FIG. 10 is a diagram showing an example of a code screen in which the size of the code is dynamically changed based on the attitude of the display control device.
• FIG. 2 is a diagram illustrating an example of functions realized in the first embodiment.
• FIG. 10 is a diagram illustrating an example of posture information.
• FIG. 2 is a diagram illustrating an example of processing executed in the first embodiment.
• FIG. 10 is a diagram illustrating an example of functions realized in a second embodiment.
• FIG. 10 is a diagram illustrating an example of processing executed in the second embodiment.
• FIG. 10 is a diagram illustrating an example of functions realized in a modification of the first embodiment.
• 10A and 10B are diagrams illustrating an example of a change in the attitude of the display control device when reading a code.
• 10A and 10B are diagrams illustrating an example of a change in the attitude of the display control device when reading a code.
• FIG. 2 is a diagram illustrating an example of a reference attitude.
• FIG. 10 is a diagram illustrating an example of upper content and lower content.
• FIG. 10 is a diagram showing an example of a code screen whose brightness changes depending on the attitude of the display control device.
• FIG. 10 is a diagram illustrating an example of how the size of a code is repeatedly changed.
• FIG. 10 is a diagram illustrating an example of functions realized in a modified example of the second embodiment.
• FIG. 10 is a diagram illustrating an example of a reference degree.
• FIG. 10 is
• First embodiment A first embodiment, which is an example of an embodiment of a program, a display control device, and a display control method according to the present disclosure, will be described.
• a display control system including a display control device and another device will be exemplified.
• Fig. 1 is a diagram showing an example of the hardware configuration of a display control system.
• the display control system 1 includes a display control device 10, a reading device 20, and a server 30.
• Each of the display control device 10, the reading device 20, and the server 30 is connected to a network N such as the Internet or a LAN.
• Fig. 1 shows one each of the display control device 10, the reading device 20, and the server 30, there may be multiple units of at least one of the display control device 10, the reading device 20, and the server 30.
• the display control device 10 is a device that controls the display of a code screen, which will be described later.
• the display control device 10 is a smartphone, a mobile phone not classified as a smartphone, a tablet, a wearable device, a handheld terminal, or a personal computer.
• the display control device 10 may also be a portable device not classified as any of these.
• the display control device 10 may also be a non-portable device.
• the display control device 10 may be a device whose orientation can be changed.
• the display control device 10 includes a control unit 11, a memory unit 12, a communication unit 13, an operation unit 14, a display unit 15, a sensor unit 16, and an image capture unit 17.
• the control unit 11 includes at least one processor.
• the memory unit 12 includes at least one of volatile memory such as RAM and non-volatile memory such as flash memory.
• the communication unit 13 includes at least one of a communication interface for wired communication and a communication interface for wireless communication.
• the operation unit 14 is an input device such as a touch panel or a mouse.
• the display unit 15 is a display such as a liquid crystal or organic EL.
• the sensor unit 16 includes at least one sensor.
• the sensor unit 16 includes a sensor used to detect the attitude of the display control device 10.
• the sensor used to detect the attitude of the display control device 10 may be a known sensor.
• the sensor unit 16 may include an acceleration sensor, a gyro sensor, a geomagnetic sensor, an angle sensor, or a combination of these.
• the sensor unit 16 may also include a sensor called a motion sensor that includes multiple of these sensors.
• the sensor unit 16 may also include other sensors that are not used to detect the attitude of the display control device 10.
• the imaging unit 17 includes at least one camera.
• the imaging unit 17 may include at least one of an in-camera and an out-camera.
• the in-camera is a camera arranged on the same surface of the display control device 10 as the surface on which the display unit 15 is arranged.
• the out-camera is a camera arranged on the opposite surface of the display control device 10 to the surface on which the display unit 15 is arranged.
• the first embodiment gives an example in which the imaging unit 17 has a different configuration from the sensor unit 16, but because the optical element included in the imaging unit 17 is also a type of sensor, the imaging unit 17 may be part of the sensor unit 16.
• the reading device 20 is a device that reads the code described below.
• the reading device 20 is a POS terminal, a self-checkout terminal, a smartphone, a mobile phone not classified as a smartphone, a tablet, a wearable terminal, a handheld terminal, an ATM, an automatic ticket gate, or a personal computer.
• the reading device 20 includes a control unit 21, a memory unit 22, a communication unit 23, an operation unit 24, a display unit 25, and a reading unit 26.
• the hardware configurations of the control unit 21, the memory unit 22, the communication unit 23, the operation unit 24, and the display unit 25 may be the same as those of the control unit 11, the memory unit 12, the communication unit 13, the operation unit 14, and the display unit 15, respectively.
• the reading unit 26 includes at least one code reader.
• the reading unit 26 may include a known code reader.
• the reading unit 26 may include a barcode reader, a two-dimensional code reader, a camera, a scanner, or a combination of these.
• the first embodiment illustrates an example in which the reading unit 26 is included in the reading device 20, but the reading unit 26 may also be connected externally to the reading device 20.
• the reading device 20 may include only the reading unit 26, without including the control unit 21, memory unit 22, communication unit 23, operation unit 24, and display unit 25.
• the programs stored in the storage units 12, 22, and 32 may be supplied to the display control device 10, the reading device 20, or the server 30 via the network N.
• the display control device 10, the reading device 20, or the server 30 may also include at least one of a reading unit (e.g., a memory card slot) that reads a computer-readable information storage medium and an input/output unit (e.g., a USB port) for inputting and outputting data to and from an external device.
• a program stored in an information storage medium may be supplied to the display control device 10, the reading device 20, or the server 30 via at least one of the reading unit and the input/output unit.
• the method for acquiring the orientation information may be a publicly known method.
• the orientation information acquisition unit 101 may acquire the orientation information based on a publicly known algorithm.
• the method for acquiring the tilt information may be a publicly known method.
• the orientation information acquisition unit 101 may acquire the tilt information based on a publicly known algorithm. For example, the orientation information acquisition unit 101 acquires the orientation information based on a detection signal from the sensor unit 16.
• the orientation information acquisition unit 101 may calculate the gravity vector of the display control device 10 based on an acceleration sensor included in the sensor unit 16, and acquire the orientation information based on this gravity vector.
• changing the size, brightness, color, pattern, blinking effects, display position, orientation, image type, or a combination of these of the components of the code screen SC constitutes a change in display.
• the components of the code screen SC are objects displayed on the code screen SC.
• the components of the code screen SC may be code C, images other than code C, text, user interface parts, or other elements.
• changing the brightness of the code screen SC itself also constitutes a change in display.
• the display control unit 102 determines that the display control device 10 is in the first orientation. If the display control device 10 is determined to be in the first orientation, the display control unit 102 causes the display unit 15 to display a code screen SC including a code C of a first size, as shown on the left side of FIG. 4. If the angle ⁇ XY is negative, the display control unit 102 determines that the display control device 10 is in the second orientation. If the display control device 10 is determined to be in the second orientation, the display control unit 102 causes the display unit 15 to display a code screen SC including a code C of a second size that is larger than the first size, as shown on the right side of FIG. 4.
• the reading device 20 includes a data storage unit 200 and a processing execution unit 201.
• the data storage unit 200 is realized by the storage unit 22.
• the processing execution unit 201 is realized by the control unit 21.
• the processing execution unit 301 executes a predetermined process when the code C is read.
• the predetermined process executed by the processing execution unit 201 is a process on the side of the reading device 20, whereas the process executed by the processing execution unit 301 is a process on the side of the server 30.
• the process may otherwise be the same as the process described for the processing execution unit 201.
• the processing execution unit 301 upon receiving a payment request from the reading device 20, the processing execution unit 301 executes the predetermined process by executing payment based on information such as a code ID included in the payment request.
• the processing execution unit 301 may execute authentication in an electronic ticket service, permission to use a coupon in a coupon distribution service, or other processing as the predetermined process.
• the processing execution unit 301 may execute processing according to the service for which the display control system 1 is used as the predetermined process.
• the light information acquisition unit 103 may acquire light information at each of a plurality of points in time.
• the light information acquisition unit 103 acquires the latest light information based on the latest detection signal from the sensor unit 16 at predetermined time intervals. In other words, the light information acquisition unit 103 periodically acquires the latest light information.
• the light information acquisition unit 103 may record the history of light information in the data storage unit 100.
• the light information acquisition unit 103 may not periodically acquire the latest light information, but may acquire it irregularly.
• the light information acquisition unit 103 may acquire light information at least when the code screen SC is displayed.
• the light information acquisition unit 103 may also acquire light information when the code screen SC is not displayed.
• the display control unit 102 changes the display of the code screen SC based on the light information.
• the display control unit 102 changes the display of the code screen SC by changing the size of the code C on the code screen SC.
• the display control unit 102 may change the display of the code screen SC by changing the brightness of the code screen SC, the color of the code C, the background color of the code screen SC, the pattern of the code screen SC, the effect of the code C, the orientation of the code C, the type of code C, or a combination thereof.
• the display control unit 102 determines whether the light indicated by the light information is a predetermined light, and changes the display of the code screen SC based on the result of this determination.
• the predetermined light is light that serves as the criterion for whether the display of the code screen SC is changed. If the display control unit 102 determines that the light indicated by the light information is not a predetermined light, it does not change the display of the code screen SC, and if it determines that the light indicated by the light information is a predetermined light, it changes the display of the code screen SC. In other words, the display control unit 102 changes the display of the code screen SC when the light indicated by the light information is determined to be a predetermined light, as a condition (trigger).
• the display control unit 102 displays the code screen SC in the first display method.
• the display control unit 102 determines whether the display control device 10 has changed from the first light to the second light based on the light information. When it is determined that the display control device 10 has changed from the first light to the second light, the display control unit 102 displays the code screen SC in the second display method. When it is determined that the display control device 10 has returned from the second light to the first light, the display control unit 102 may return the code screen SC to the first display method.
• the types of light that the first light and second light are may be defined in the payment app, or may be defined in setting data referenced by the payment app.
• the setting data is assumed to be stored in the data storage unit 100.
• the display control unit 102 determines whether the display control device 10 is using the first light or the second light based on at least one of the payment app and the setting data.
• the types of display methods that the first and second display methods are may be defined in the payment app, or may be defined in setting data referenced by the payment app.
• the display control unit 102 may control the display method of the code screen SC based on at least one of the payment app and the setting data.
• the light input to the display control device 10 in the upper state of FIG. 3 corresponds to the first light.
• the light input to the display control device 10 in the lower state of FIG. 3 corresponds to the second light.
• the display control unit 102 detects a change in light based on light information at each of multiple points in time, and changes the display of the code screen SC based on the change in light.
• the display control unit 102 detects a change in light such that the light becomes darker, and changes the display of the code screen SC based on the change in light.
• the light indicated by the light information may become darker due to the shadow of the reading unit 26, so the display control unit 102 changes the display of the code screen SC when it detects such a change in light.
• the display control unit 102 when the light information indicates the first light, the display control unit 102 causes the display unit 15 to display the code screen SC including the code C of the first size, as shown on the left side of FIG. 4.
• the display control unit 102 causes the display unit 15 to display a code screen SC including a code C of a second size that is larger than the first size, as shown on the right side of Figure 4.
• the display control unit 102 may determine whether the brightness of light at a certain point in time is equal to or greater than a threshold value based on light information at that point in time, rather than the amount of change in the degree of brightness of light. If the display control unit 102 determines that the brightness of light at that point in time is equal to or greater than the threshold value, it may not change the display of the code screen SC, and may change the display of the code screen SC if it determines that the brightness of light at that point in time is less than the threshold. If the light information is a binary value indicating whether or not light is detected, rather than the degree of brightness of light, the display control unit 102 may determine whether or not light is detected based on light information in a certain one dimension.
• Fig. 9 is a diagram showing an example of processing executed in the second embodiment.
• Fig. 9 shows processing of the display control device 10 among the processing executed in the display control system 1.
• the processing of Fig. 9 is executed by the control unit 11 executing a program (e.g., a payment application) stored in the storage unit 12.
• a program e.g., a payment application
• Each step of Fig. 9 is an example of a step included in the display control method according to the present disclosure.
• S20 to S23 are the same as S10 to S13, respectively.
• the display control device 10 acquires light information based on the detection signal from the sensor unit 16 (S24). Details of the processing of S24 are as explained above in relation to the processing content of the light information acquisition unit 103.
• the display control unit 102 changes the display of the code screen SC based on the light information (S25), and this processing ends. Details of the processing of S25 are as explained above in relation to the processing content of the display control unit 102.
• the display control device 10 enlarges the code C to make it easier to read, thereby preventing the code C from taking a long time to read. Because the user does not need to perform a special operation (e.g., tapping the code screen SC) to change the display of the code screen SC, the display control device 10 can reduce the user's operational burden.
• a special operation e.g., tapping the code screen SC
• the display control device 10 also acquires light information at each of a plurality of points in time.
• the display control device 10 detects changes in light based on the light information at each of the plurality of points in time, and changes the display of the code screen SC based on the changes in light.
• This allows the display control device 10 to display a flexible code screen SC on the display unit 15 that responds to changes in light, thereby improving user convenience.
• the display control device 10 can prioritize user visibility by not displaying code C as large.
• the display control device 10 can increase the size of code C to make it easier to read, preventing it from taking a long time to read code C.
• the display control device 10 detects changes in light such as the light becoming darker, and changes the display of the code screen SC based on this change. This allows the display control device 10 to display a flexible code screen SC on the display unit 15 that responds to changes in light, thereby improving user convenience. For example, the display control device 10 can prevent the code C from taking a long time to read by increasing the size of the code C so that it is easier to read even in darker light.
• the display control unit 102 changes the display of the code screen SC based on posture information.
• the display control unit 102 changes the display of the code screen SC based on light information.
• the display control unit 102 determines, based on a predetermined determination method, whether or not the code C is about to be read by the reading unit 26, and changes the display of the code screen SC based on the result of that determination.
• the predetermined determination method is a method for determining whether or not the code C is about to be read by the reading unit 26.
• the predetermined determination method can also be said to be a method for determining whether or not to change the display of the code screen SC.
• the determination method based on posture information described in the first embodiment is an example of a predetermined determination method.
• the determination method based on light information described in the second embodiment is an example of a predetermined determination method.
• the predetermined determination method may be a determination method other than the determination methods described in each of the first and second embodiments.
• the display control unit 102 may determine, based on the captured image, whether or not an object other than the reading unit 26 has approached the code screen SC.
• An object approaching the code screen SC can also be said to mean that an object is approaching the code C, the in-camera of the photographing unit 17, or the display control device 10.
• the display control unit 102 need only determine, from the captured image, that an object corresponding to the foreground has approached the code screen SC, rather than using an object detection algorithm to detect a specific object.
• An object approaching the code screen SC corresponds to the code C being about to be read by the reading unit 26. Whether or not an object is approaching the code screen SC corresponds to the code C not being about to be read by the reading unit 26.
• the display control device 10 of the third embodiment determines whether or not the code C is about to be read by the reading unit 26 based on a predetermined determination method, and changes the display of the code screen SC based on the result of this determination. This allows the display control device 10 to achieve the same effects as those described in the summary of the first embodiment and/or the summary of the second embodiment. For example, even if the display control device 10 does not detect posture and light, as long as it has a function that can implement another determination method, it can achieve the same effects as those described in the summary of the first embodiment and/or the summary of the second embodiment using the other determination method.
• Modification of the first embodiment] 10 is a diagram showing an example of functions realized in the modified example of the first embodiment.
• the display control device 10 of the modified example of the first embodiment realizes a reference attitude setting unit 104 and an execution determination unit 105.
• the reference attitude setting unit 104 and the execution determination unit 105 are each realized by the control unit 11.
• the orientation information acquisition unit 101 may acquire, as tilt information, information on the tilt of the display control device 10 and the orientation V1 of the code screen SC.
• the information on tilt indicates not only the tilt of the display control device 10 but also the orientation V1 of the code screen SC.
• the orientation V1 of the code screen SC can also be referred to as the orientation V1 of the display control device 10 or the display unit 15.
• the orientation V1 of the code screen SC can also be referred to as the orientation V1 of the surface of the housing of the display control device 10 on which the display unit 15 is exposed.
• the tilt information indicates the roll angle ⁇ X, pitch angle ⁇ Y, and yaw angle ⁇ Z described in FIG. 6.
• the attitude information and tilt information described in the first embodiment may indicate only some of these three angles, rather than all of them, but the tilt information in Modification 1-1 indicates all of these three angles.
• the tilt information may indicate orientation V1, but because orientation V1 can be calculated from these three angles, the tilt information does not need to indicate orientation V1.
• the display control unit 102 identifies the tilt of the display control device 10 based on the roll angle ⁇ X and pitch angle ⁇ Y of the tilt information, rather than on the yaw angle ⁇ Z. This is as described in the first embodiment.
• the display control unit 102 determines the orientation V1 of the code screen SC based on the roll angle ⁇ X, pitch angle ⁇ Y, and yaw angle ⁇ Z indicated by the tilt information.
• the display control unit 102 determines the direction of the normal to the display unit 15 displaying the code screen SC as the orientation V1 of the code screen SC based on the tilt information.
• the display control unit 102 may determine the orientation V1 of the code screen SC based on at least the yaw angle ⁇ Z of the tilt information.
• the display control unit 102 may determine the orientation V1 of the code screen SC without based on at least one of the roll angle ⁇ X and the pitch angle ⁇ Y of the tilt information.
• the tilt information may be represented by information other than Euler angles, such as the roll angle ⁇ X, pitch angle ⁇ Y, and yaw angle ⁇ Z.
• the tilt information may be expressed in the quaternion, rotation matrix, axis angle representation, direction cosine matrix, pointing angle, or other formats described in the first embodiment.
• the method for acquiring the tilt information may be a known method.
• the attitude information acquisition unit 101 may acquire the tilt information based on a known algorithm.
• FIG. 11 is a diagram showing an example of the change in the posture of the display control device 10 when reading code C.
• a reading method in which the user presents code C is given as an example.
• a reading method in which the user presents code C is referred to as the presentation type.
• code C may also be read using the presentation type, but variant 1-1 gives an example of a different type of reading method.
• the user holds code C over the reading unit 26 placed in a predetermined position (for example, on a table in a store).
• a reading method in which the user holds code C over the reading unit 26 is referred to as the holding type.
• the user changes the orientation of the display control device 10 so that the code screen SC faces the reading surface of the reading unit 26.
• Having the code screen SC facing the reading surface of the reading unit 26 means that the angle between the orientation V1 of the code screen SC and the orientation V2 of the reading surface of the reading unit 26 is 180 degrees or approximately 180 degrees. Approximately 180 degrees is an angle close to 180 degrees. For example, approximately 180 degrees may be 150 degrees to 210 degrees.
• the user since the reading surface of the reading unit 26 faces upward, the user changes the orientation of the display control device 10 so that the code screen SC faces downward.
• the user changing the tilt of the display control device 10 and the orientation of the code screen SC corresponds to changing the orientation of the display control device 10.
• the reading surface of the reading unit 26 can face in any direction.
• the direction in which the reading surface of the reading unit 26 faces is not limited to the upward direction.
• the reading surface of the reading unit 26 may face diagonally upward, horizontally, diagonally downward, downward, or in another direction. Regardless of the direction in which the reading surface of the reading unit 26 faces, the user simply changes the orientation of the display control device 10 so that the code screen SC faces the reading surface of the reading unit 26.
• Figure 12 is a diagram showing an example of the change in attitude of the display control device 10 when reading code C.
• the reading surface of the reading unit 26 faces horizontally.
• the user changes the attitude of the display control device 10 so that the code screen SC faces horizontally, opposite the reading surface of the reading unit 26.
• the user can hold code C over the reading unit 26.
• the display control unit 102 in variant example 1-1 changes the display of the code screen SC based on the tilt information, etc. For example, when the tilt information, etc. indicates a first tilt and orientation, the display control unit 102 displays the code screen SC in a first display method.
• the first tilt and orientation is a tilt and orientation in which the code screen SC does not face the reading surface of the reading unit 26.
• the first tilt and orientation is a tilt and orientation in which the code screen SC does not face downward.
• the first tilt and orientation is a tilt and orientation in which the code screen SC does not face horizontally.
• the display control unit 102 determines, based on the tilt information, whether the display control device 10 has changed from a first tilt and orientation to a second tilt and orientation.
• the second tilt and orientation is a tilt and orientation in which the code screen SC faces toward the reading surface of the reading unit 26.
• the second tilt and orientation is a tilt and orientation in which the code screen SC faces downward.
• the second tilt and orientation is a tilt and orientation in which the code screen SC faces horizontally.
• the display control unit 102 displays the code screen SC in the second display method.
• the display control unit 102 may return the code screen SC to the first display method.
• the display control unit 102 may change the display of the code screen SC based on information such as tilt.
• the display control unit 102 may determine not only the tilt described in the first embodiment, but also whether the code screen SC is facing upward or diagonally upward, and may change the display of the code screen SC if it is determined that the code screen SC is facing upward or diagonally upward.
• the posture information acquisition unit 101 may acquire posture information at each of a plurality of time points, as described in the first embodiment.
• the display control unit 102 may detect a change in posture of the display control device 10 based on the posture information at each of the plurality of time points, and change the display of the code screen SC based on the change in posture of the display control device 10.
• the display control unit 102 detects, as the posture change, a difference between the posture indicated by the posture information at a first time point among the plurality of time points and the posture indicated by the posture information at a second time point among the plurality of time points.
• the display control unit 102 determines whether a change in the attitude of the display control device 10 is a predetermined change.
• the predetermined change is a change that serves as a criterion for whether to change the display of the code screen SC.
• the predetermined change may be the amount of change in attitude exceeding a threshold, a change from a first attitude to a second attitude, or some other change.
• Variation 1-2 takes as an example a case where the amount of change in attitude exceeding a threshold corresponds to the predetermined change.
• the display control unit 102 can determine whether a change in attitude of the display control device 10 is a predetermined change by determining whether the amount of change in the Euler angles is exceeding a threshold.
• the display control unit 102 changes the display of the code screen SC.
• the display control unit 102 changes the display of the code screen SC when the change in posture of the display control device 10 is determined to be a predetermined change, which is the condition (trigger).
• the method of changing the display of the code screen SC may be the same as in the first embodiment. For example, as shown in FIG. 4, the display control unit 102 may change the display of the code screen SC by enlarging the code C.
• a change in the attitude of the display control device 10 from the upper attitude of Figure 3 to the lower attitude of Figure 3 may correspond to the predetermined change in the attitude of the display control device 10.
• a change from the upper attitude of Figure 11 to the lower attitude of Figure 11 may correspond to the predetermined change in the attitude of the display control device 10.
• a change from the upper attitude of Figure 12 to the lower attitude of Figure 12 may correspond to the predetermined change in the attitude of the display control device 10.
• the display control unit 102 may change the display of the code screen SC when detecting a change in attitude such as at least one of Figures 3, 11, and 12.
• the display control device 10 of variant 1-2 acquires posture information at each of multiple points in time.
• the display control device 10 detects changes in the posture of the display control device 10 based on the posture information at each of the multiple points in time, and changes the display of the code screen SC based on the changes in the posture of the display control device 10.
• This allows the display control device 10 to display a flexible code screen SC on the display unit 15 that corresponds to changes in the posture of the display control device 10, thereby improving user convenience. For example, if the amount of change in the posture of the display control device 10 exceeds a threshold, it is estimated that code C is about to be read, and in such a case, the display control device 10 can change the display of the code screen SC to make code C easier to read.
• Modification 1-3 For example, in Modification 1-2, the display control unit 102 may detect the rotation of the display control device 10 as a change in the attitude of the display control device 10, and change the display of the code screen SC based on the rotation of the display control device 10.
• the display control unit 102 can detect rotation about any rotation axis
• Modification 1-3 takes as an example a case where the display control unit 102 detects rotation about a rotation axis in a direction other than the Z-axis direction in FIG. 6.
• the other direction is a direction different from the Z-axis direction.
• the other direction may be a direction whose angle with the Z-axis is equal to or greater than a threshold value (e.g., 30 degrees).
• the display control unit 102 determines whether the rotation of the display control device 10 is a predetermined rotation.
• the predetermined rotation is a rotation that serves as a reference for determining whether to change the display of the code screen SC.
• the predetermined rotation may be the amount of rotation in a direction other than the Z-axis direction being equal to or greater than a threshold, or may be another rotation.
• Modification example 1-3 gives an example in which the amount of rotation in a direction other than the Z-axis direction being equal to or greater than a threshold corresponds to the predetermined rotation.
• the display control unit 102 detects the amount of rotation in a direction other than the Z-axis direction based on the roll angle ⁇ X and the pitch angle ⁇ Y.
• the display control unit 102 determines whether the rotation of the display control device 10 is a predetermined rotation. That is, the display control unit 102 changes the display of the code screen SC when the rotation of the display control device 10 is determined to be a predetermined rotation, as a condition (trigger).
• the method of changing the display of the code screen SC may be the same as in the first embodiment. For example, as shown in FIG. 4, the display control unit 102 may change the display of the code screen SC by increasing the code C.
• the predetermined rotation may be a rotation in which the amount of rotation (rotation angle or rotation angular velocity) is equal to or greater than a threshold value.
• the rotation of the display control device 10 from the upper state of FIG. 3 to the lower state of FIG. 3 may correspond to the predetermined rotation of the display control device 10.
• the rotation of the display control device 10 from the upper state of FIG. 11 to the lower state of FIG. 11 may correspond to the predetermined rotation of the display control device 10.
• the rotation of the display control device 10 from the upper state of FIG. 12 to the lower state of FIG. 12 may correspond to the predetermined rotation of the display control device 10.
• the display control unit 102 may change the display of the code screen SC when detecting at least one of the rotations in FIG. 3, FIG. 11, and FIG. 12.
• the display control device 10 of variant 1-3 detects the rotation of the display control device 10 as a change in the attitude of the display control device 10, and changes the display of the code screen SC based on the rotation of the display control device 10. This allows the display control device 10 to display a flexible code screen SC on the display unit 15 that corresponds to the rotation of the display control device 10, thereby improving user convenience. For example, if the amount of rotation of the display control device 10 exceeds a threshold, it is estimated that code C is about to be read, and in such a case the display control device 10 can change the display of the code screen SC to make code C easier to read.
• the change in the attitude of the display control device 10 may be a change from a reference attitude that serves as a reference.
• the reference attitude is an attitude that serves as a judgment criterion.
• the attitude indicated by the attitude information at the first time point in Modification 1-2 is an example of a reference attitude.
• the rotation of the display control device 10 may be a rotation from the reference attitude.
• other examples of the reference attitude will be described.
• FIG. 13 is a diagram showing an example of a reference attitude.
• the reference attitude is indicated by the roll angle ⁇ X1, pitch angle ⁇ Y1, and yaw angle ⁇ Z1 at a certain point in time.
• the display control device 10 of variant 1-4 includes a reference attitude setting unit 104.
• a payment app causes the display control device 10 to further function as the reference attitude setting unit 104.
• the reference attitude setting unit 104 sets a reference attitude related to a reference attitude.
• Reference attitude data indicating the reference attitude may be stored in advance in the data storage unit 100, but variant 1-4 takes as an example a case where the reference attitude setting unit 104 dynamically sets the reference attitude depending on the status of the display control device 10.
• the reference attitude setting unit 104 sets the reference attitude by recording the reference attitude data in the data storage unit 100.
• the specified point in time may be any point in time. For example, if the specified point in time corresponds to the point in time when the payment app is launched, the reference posture setting unit 104 sets the posture indicated by the posture information acquired when the payment app is launched as the reference posture. If the specified point in time corresponds to the point in time when the login process to the payment service is successful, the reference posture setting unit 104 sets the posture indicated by the posture information acquired when the login process is successful as the reference posture. If the specified point in time corresponds to the point in time when the user performs a specified operation, the reference posture setting unit 104 sets the posture indicated by the posture information acquired when the user performs a specified operation as the reference posture.
• the display control unit 102 detects a change in attitude from the reference attitude and changes the display of the code screen SC based on the change in attitude from the reference attitude. For example, the display control unit 102 detects the difference between the reference attitude and the attitude indicated by the latest attitude information as the change in attitude from the reference attitude. In the example of FIG. 13, the attitude indicated by the latest attitude information is indicated by a roll angle ⁇ X2, a pitch angle ⁇ Y2, and a yaw angle ⁇ Z2. The display control unit 102 determines whether the change in attitude from the reference attitude is a predetermined change (for example, the amount of change in attitude is greater than or equal to a threshold).
• a predetermined change for example, the amount of change in attitude is greater than or equal to a threshold.
• the display control unit 102 does not determine that the change in attitude from the reference attitude is a predetermined change, it does not change the display of the code screen SC, but if it determines that the change in attitude from the reference attitude is a predetermined change, it changes the display of the code screen SC. In other words, the display control unit 102 changes the display of the code screen SC when the change in attitude from the reference attitude is determined to be a predetermined change, which is the condition (trigger).
• the display control device 10 sets a reference attitude related to the reference attitude.
• the display control device 10 detects changes in attitude from the reference attitude and changes the display of the code screen SC based on the changes in attitude from the reference attitude. This allows the display control device 10 to display a flexible code screen SC on the display unit 15 in accordance with changes in attitude from the reference attitude, thereby improving user convenience. For example, if the amount of change in attitude from the reference attitude, which is the basis for estimating whether code C is about to be read, exceeds a threshold, it is estimated that code C is about to be read, and the display control device 10 can make code C easier to read in such cases by changing the display of the code screen SC.
• the reference attitude setting unit 104 may set the reference attitude based on attitude information acquired when the code screen SC is displayed on the display unit 15.
• the reference attitude setting unit 104 sets the reference attitude based on attitude information acquired after program code that displays the code screen SC, among program codes included in the payment app, is executed.
• the processing of the display control unit 102 after the reference attitude is set may be the same as in Modification 1-4.
• the reference attitude setting unit 104 may set the reference attitude based on attitude information acquired when code C is subsequently displayed. If code C is not displayed when the code screen SC is displayed, code C may be displayed by a user operation, or may be displayed after a predetermined time has passed. The reference attitude setting unit 104 may set the reference attitude based on attitude information acquired when code C is displayed.
• the display control device 10 sets the reference orientation based on the orientation information acquired when the code screen SC is displayed on the display unit 15. This allows the display control device 10 to display a flexible code screen SC on the display unit 15 in accordance with changes in orientation after the code screen SC is displayed on the display unit 15, thereby improving user convenience.
• the orientation of the display control device 10 when the code screen SC is displayed on the display unit 15 is the orientation in which the user checks the display of the code screen SC, so in this orientation, it is considered that the code C will not yet be read.
• this orientation is set as the reference orientation and thereafter the orientation changes significantly from the reference orientation, it is estimated that the code C is about to be read, and the display control device 10 can make the code C easier to read in such cases by changing the display of the code screen SC.
• the display control unit 102 may change the display of the code screen SC by changing the display position of the lower content displayed below the code C on the code screen SC without changing the display position of the upper content displayed above the code C on the code screen SC.
• Content is a component of the code screen SC (a part serving as a user interface).
• content may be text, a link, an input form such as a button or a check box, or an image such as an icon.
• Code C is also a type of content.
• FIG. 14 is a diagram showing an example of upper content and lower content.
• all content on the code screen SC other than the code C is omitted.
• the content on the code screen SC that is displayed in the display area A1 above the code C is the upper content.
• the "AAA Pay" text, the hamburger icon, the text indicating the number of points, and the text indicating the electronic money balance each correspond to the upper content.
• the content displayed in the display area A2 below the code C on the code screen SC is the lower content.
• the lower content corresponds to the text indicating the payment source set by the user, the button for setting the payment source, the button for selecting other payment methods such as self-payment or code scanning, and the icon of a mini-app such as an invoice.
• the data storage unit 100 stores display position data indicating the display position of each content on the code screen SC.
• the display position data indicates the display position of each of the upper content, code C, and lower content.
• the display control unit 102 does not change the display position of the upper content indicated by the display position data.
• the display control unit 102 changes the display positions of the code C and lower content indicated by the display position data so that the resized code C does not overlap with the upper content and lower content.
• the display control unit 102 does not have to change the display position as in Variation Examples 1-6.
• this disclosure also includes a display control unit 102 that changes the display position of upper content, a display control unit 102 that changes the display position of lower content, a display control unit 102 that displays no content above code C (upper content does not exist in the first place), a display control unit 102 that displays no content below code C (lower content does not exist in the first place), or a display control unit 102 that combines these.
• the display control device 10 in variant example 1-6 changes the display of the code screen SC by changing the display position of the lower content displayed below the code C on the code screen SC, without changing the display position of the upper content displayed above the code C on the code screen SC. This allows the display control device 10 to prevent a decrease in the visibility of the code screen SC. For example, the display control device 10 can also prevent the code C from going outside the code screen SC and becoming unreadable.
• the display control unit 102 may change the display of the code screen SC by changing the brightness of the code screen SC.
• Modification 1-7 an example is given in which the display control unit 102 changes the size of the code C in the same manner as in the first embodiment and also changes the brightness of the code screen SC, but the display control unit 102 may change the brightness of the code screen SC without changing the size of the code C. In other words, the display control unit 102 may change the display of the code screen SC by changing only the brightness of the code screen SC.
• Figure 15 is a diagram showing an example of a code screen SC whose brightness changes depending on the attitude of the display control device 10.
• the brightness of the code screen SC is represented schematically by halftone dots. The higher the halftone dot density, the darker the code screen SC. In other words, the lower the halftone dot density, the brighter the code screen SC.
• a code screen SC with no halftone dots is the brightest.
• the display control unit 102 changes the brightness of the code screen SC from left to right in Figure 15, making the code screen SC brighter.
• the change in the presentation type attitude may be detected in the same manner as in the first embodiment.
• the display control unit 102 changes the brightness of the code screen SC from left to right in FIG. 15, brightening the code screen SC.
• the change in orientation for holding it over the screen can be detected in the same manner as in Variation 1-1.
• Orientation changes such as those in Variations 1-2 to 1-6 can also be applied to Variation 1-7.
• the display control device 10 in variant 1-7 changes the display of the code screen SC by changing the brightness of the code screen SC. This allows the display control device 10 to display the code screen SC at a flexible brightness that corresponds to the posture information. For example, when the posture does not require preparation for reading the code C, the display control device 10 does not display the code screen SC so brightly, thereby prioritizing user visibility and reducing power consumption. When the posture requires preparation for reading the code C, the display control device 10 brightens the code screen SC to make the code C easier to read, thereby preventing the code C from taking a long time to read. Because the user does not need to perform a special operation (for example, tapping the code screen SC) to change the brightness of the code screen SC, the display control device 10 can reduce the operational burden on the user.
• a special operation for example, tapping the code screen SC
• the display control unit 102 may determine the degree of change in the display of the code screen SC based on the posture information, and change the display of the code screen SC based on that degree.
• the degree of change in the display is the amount of change in the display.
• at least one of the size of the code C and the brightness of the code screen SC corresponds to the degree of change in the display.
• a case is given in which both of these correspond to the degree of change in the display, but only one of the size of the code C or the brightness of the code screen SC may correspond to the degree of change in the display.
• the relationship between the posture indicated by the posture information and the degree of display change is defined in the payment app. However, this relationship may also be defined in data separate from the payment app as settings referenced by the payment app.
• the display control unit 102 determines the degree of display change based on the posture information and the above relationship. For example, the display control unit 102 determines the degree of display change so that the greater the amount of change in posture indicated by the posture information, the greater the degree of display change, and changes the display of the code screen SC based on that degree.
• the display control unit 102 determines the size of the code C as a degree of change in display such that the larger the tilt of the display control device 10, the larger the size of the code C, and displays the code C of that size on the code screen SC.
• the display control unit 102 determines the size of the code C as a degree of change in display such that the larger the orientation of the code screen SC, the larger the size of the code C, and displays the code C of that size on the code screen SC.
• the display control unit 102 determines the size of the code C as a degree of change in display such that the larger the amount of rotation of the display control device 10, the larger the size of the code C, and displays the code C of that size on the code screen SC.
• the display control unit 102 determines the degree of brightness of the code screen SC as a degree related to the change in display so that the code screen SC becomes brighter the greater the tilt of the display control device 10, and displays the code screen SC at that degree of brightness.
• the display control unit 102 determines the degree of brightness of the code screen SC as a degree related to the change in display so that the code screen SC becomes brighter the greater the tilt of the display control device 10, and displays the code screen SC at that degree of brightness.
• the display control unit 102 determines the degree of brightness of the code screen SC as a degree related to the change in display so that the code screen SC becomes brighter the greater the amount of rotation of the display control device 10, and displays the code screen SC at that degree of brightness.
• the display control device 10 in variant 1-8 determines the degree of change to the display of the code screen SC and changes the display of the code screen SC based on that degree. This allows the display control device 10 to display a more flexible code screen SC on the display unit 15 in accordance with the posture information, thereby improving user convenience. For example, the display control device 10 can gradually change at least one of the size of the code C and the brightness of the code screen SC in accordance with the posture indicated by the posture information, thereby further increasing the flexibility of the display of the code screen SC during reading.
• Modification 1-9 For example, depending on the circumstances under which the code C is read, a standard-sized code C (the initial size when the code screen SC is displayed) may be more appropriate than a large code C, or a code C smaller than the standard size may be more appropriate.
• a standard-brightness code screen SC may be more appropriate, or a code screen SC darker than the standard brightness may be more appropriate. Therefore, the display control unit 102 may repeatedly change the display of the code screen SC.
• Modification 1-9 takes as an example a case in which the size of the code C is changed, as in the first embodiment.
• FIG. 16 is a diagram showing an example of how the size of code C is repeatedly changed.
• the display control unit 102 switches the display of code C between three sizes: small (standard size) as shown in the upper left of FIG. 16, medium as shown in the upper right of FIG. 16, and large as shown in the lower right of FIG. 16.
• the display control unit 102 changes code C to another size when a predetermined time has passed since code C was displayed.
• the display control unit 102 may determine whether the predetermined time has passed using a known timing process.
• the display control unit 102 changes the size of code C each time the predetermined time has passed.
• the display control unit 102 may switch the brightness of the code screen SC between three brightness levels: dark, standard, and bright.
• the display control unit 102 may switch the display of the code screen SC in two or four or more stages, rather than three stages as shown in FIG. 16. After switching the size between small, medium, and large as shown in FIG. 16, the display control unit 102 may return the code C to small size again and repeat the size switching. Similarly, the display control unit 102 may switch the brightness between dark, standard, and bright, and then return the code screen SC to dark and repeat the brightness switching.
• the display control device 10 in variant 1-9 repeatedly changes the display of the code screen SC. This allows the display control device 10 to increase the probability that the code C will be read accurately. For example, in a situation where a standard-sized code C is more appropriate than a large code C, the code C is read when the display control device 10 returns from the large code C to the standard-sized code C, thereby increasing the probability that the code C will be read accurately.
• the display control device 10 can display the code screen SC in a way that can respond to a variety of situations.
• Modification 1-10 For example, in Modification 1-9, the display of the code screen SC may be changed until payment is executed.
• the display control device 10 in Modification 1-10 includes an execution determination unit 105.
• the payment application causes the display control device 10 to function as the execution determination unit 105.
• the execution determination unit 105 determines whether or not a predetermined process that is executed when the code C is read by the reading device 20 has been executed. The predetermined process is as described in the first embodiment for the process execution unit 201 and the process execution unit 301.
• the process execution unit 301 of the server 30 sends an execution notification to the display control device 10 indicating that the predetermined process has been executed.
• the execution determination unit 105 determines whether or not the predetermined process has been executed by determining whether or not an execution notification has been received from the server 30.
• the execution notification may be sent from a device other than the server 30 (e.g., the reading device 20).
• the execution determination unit 105 may determine whether or not the predetermined process has been executed by determining whether or not an execution notification has been received from the other device.
• the process execution unit 301 may determine whether or not the predetermined process has been executed based on the processing results of a program (e.g., a payment app) that executes the predetermined process.
• a program e.g., a payment app
• the display control unit 102 repeatedly changes the display of the code screen SC while it is determined that the specified processing has not been executed.
• the display control unit 102 stops changing the display of the code screen SC when it is determined that the specified processing has been executed.
• the display control unit 102 repeatedly changes the display of the code screen SC until it is determined that the specified processing has been executed.
• the display control unit 102 stops changing the display of the code screen SC when the specified processing has been executed.
• the display control unit 102 may transition to a screen other than the code screen SC when the specified processing has been executed.
• the display control device 10 of variant 1-10 determines whether or not a predetermined process that is executed when the code C is read by the reading device 20 has been executed.
• the display control device 10 repeatedly changes the display of the code screen SC while it determines that the predetermined process will not be executed. This allows the display control device 10 to repeatedly change the display of the code screen SC so that it becomes a code screen SC appropriate for the predetermined process until the predetermined process is executed. As a result, the predetermined process is executed accurately.
• [4-2. Modification of the second embodiment] 17 is a diagram showing an example of functions realized in the modified example of the second embodiment.
• the display control device 10 of the modified example of the second embodiment realizes an execution determination unit 105 and a reference degree setting unit 106.
• the execution determination unit 105 and the reference degree setting unit 106 are each realized by the control unit 11.
• the code C may also be read by a holding-up type reading method as shown in Figures 11 and 12.
• the display control unit 102 may detect a change in the light, such as an increase in the brightness of the light, and change the display of the code screen SC based on this change in the brightness of the light.
• the display control unit 102 changes the display of the code screen SC when the light indicated by the light information becomes brighter. For example, when the light indicated by the light information becomes brighter, the display control unit 102 changes the display of the code screen SC so that the code C becomes larger, as shown in FIG. 4.
• the display control unit 102 calculates the increase in the degree of light brightness as the change in the degree of light brightness.
• the display control unit 102 when the brightness of light is expressed in lux, the display control unit 102 does not change the display of the code screen SC if it determines that the increase in lux is less than a threshold, and changes the display of the code screen SC if it determines that the increase in lux is equal to or greater than the threshold.
• the display control unit 102 may change the display of the code screen SC based on at least one of the increase and decrease in lux. This also applies when an index other than lux is used.
• the display control device 10 in variant 2-1 detects a change in light, such as an increase in light brightness, and changes the display of the code screen SC based on this change.
• This allows the display control device 10 to display a flexible code screen SC on the display unit 15 that responds to the increase in light brightness, thereby improving user convenience.
• the display control device 10 determines that the surroundings are bright and that preparations should be made to read code C, and by increasing the size of code C, it is possible to prevent the code C from taking a long time to read.
• the change in light to the display control device 10 may be a change from a reference degree that serves as a reference.
• the reference degree is light that serves as a judgment criterion.
• the display control unit 102 detects, as a change in light, the difference between the light indicated by the light information at a first time point among the multiple time points and the light indicated by the light information at a second time point among the multiple time points, the light indicated by the light information at the first time point is an example of the reference degree.
• Modification 2-2 will describe another example of the reference degree.
• FIG. 18 is a diagram showing an example of a reference degree.
• the reference degree is 100 lux, which is the degree of light brightness at a certain point in time.
• the display control device 10 of variant 2-2 includes a reference degree setting unit 106.
• a payment app causes the display control device 10 to further function as the reference degree setting unit 106.
• the reference degree setting unit 106 sets a reference degree related to the reference degree of light brightness.
• Reference degree data indicating the reference degree may be stored in advance in the data storage unit 100, but variant 2-2 takes as an example a case where the reference degree setting unit 106 dynamically sets the reference degree depending on the status of the display control device 10.
• the reference degree setting unit 106 sets the reference degree by recording the reference degree data in the data storage unit 100.
• the reference degree setting unit 106 sets the degree of brightness indicated by the light information acquired at a predetermined time point as the reference degree.
• the predetermined time point is the time point at which the reference degree setting unit 106 should set the reference degree.
• Data indicating the predetermined time point is assumed to be stored in advance in the data storage unit 100.
• the reference degree setting unit 106 determines whether the predetermined time point has arrived based on the data.
• the reference degree setting unit 106 sets the degree of brightness indicated by the light information acquired when it is determined that the predetermined time point has arrived as the reference degree.
• the light information acquisition unit 103 may continuously acquire light information from before the predetermined time point arrives, or may acquire light information when it is determined that the predetermined time point has arrived.
• the specified point in time may be any point in time. For example, if the specified point in time corresponds to the point in time when the payment app is launched, the reference degree setting unit 106 sets the brightness level indicated by the light information acquired when the payment app is launched as the reference degree. If the specified point in time corresponds to the point in time when the login process to the payment service is successful, the reference degree setting unit 106 sets the brightness level indicated by the light information acquired when the login process is successful as the reference degree. If the specified point in time corresponds to the point in time when the user performs a specified operation, the reference degree setting unit 106 sets the brightness level indicated by the light information acquired when the user performs a specified operation as the reference degree.
• the display control unit 102 changes the display of the code screen SC based on the change in light from the reference degree. For example, the display control unit 102 detects the difference between the reference degree and the brightness indicated by the latest light information as the change in light from the reference degree. In the example of FIG. 18, the brightness indicated by the latest light information is 50 lux. The display control unit 102 determines whether the change in light from the reference degree is a predetermined change (for example, the change in brightness is greater than or equal to a threshold).
• the display control unit 102 does not determine that the change in light from the reference degree is a predetermined change, it does not change the display of the code screen SC; but if it determines that the change in light from the reference degree is a predetermined change, it changes the display of the code screen SC. In other words, the display control unit 102 changes the display of the code screen SC when the change in light from the reference degree is determined to be a predetermined change, which is the condition (trigger).
• this embodiment differs from the second embodiment in that the change in light required to change the display of the code screen SC is a change from a reference degree, but other points may be the same as the second embodiment.
• the display control unit 102 determines whether the amount of change in brightness from the reference degree is equal to or greater than a threshold. If the display control unit 102 determines that the amount of change in brightness from the reference degree is not equal to or greater than the threshold, it does not change the display of the code screen SC, and if it determines that the amount of change in brightness from the reference degree is equal to or greater than the threshold, it changes the display of the code screen SC.
• the display control device 10 sets a reference degree related to the reference degree of light brightness.
• the display control device 10 changes the display of the code screen SC based on changes in light from the reference degree. This allows the display control device 10 to display a flexible code screen SC on the display unit 15 that corresponds to changes in the degree of brightness from the reference degree, thereby improving user convenience. For example, if the amount of change in the degree of brightness from the reference degree that serves as the reference for estimating whether code C is about to be read exceeds a threshold, it is estimated that code C is about to be read, and the display control device 10 can make code C easier to read in such cases by changing the display of the code screen SC.
• the reference degree setting unit 106 may set the reference degree based on light information acquired when the code screen SC is displayed on the display unit 15.
• the reference degree setting unit 106 sets the reference degree based on light information acquired after program code that indicates the display of the code screen SC is executed, among program codes included in the payment app.
• the processing of the display control unit 102 after the reference degree is set may be the same as in Modification 2-2.
• the reference degree setting unit 106 may set the reference degree based on the light information acquired when code C is displayed on the code screen SC. If code C is not displayed when the code screen SC is displayed, code C may be displayed by a user operation, or after a predetermined time has passed. The reference degree setting unit 106 may set the reference degree based on the light information acquired when code C is displayed.
• the display control device 10 sets the reference degree based on the light information acquired when the code screen SC is displayed on the display unit 15. This allows the display control device 10 to display a flexible code screen SC on the display unit 15 that responds to changes in light after the code screen SC is displayed on the display unit 15, thereby improving user convenience. For example, when the code screen SC is displayed on the display unit 15, the user checks the display of the code screen SC, so it is considered that reading of code C has not yet occurred. For this reason, the brightness of the light at this time is set as the reference degree, and if the brightness subsequently changes significantly from the reference degree, it is assumed that code C is about to be read. Therefore, the display control device 10 can change the display of the code screen SC in such cases to make code C easier to read.
• the light information acquisition unit 103 may acquire color information related to the color of light as the light information, instead of the brightness of light.
• the reading unit 26 may read the code C using light from a light including a red LED or the like. In this case, the light to the display control device 10 is red.
• the reading unit 26 may read the code C by illuminating the display control device 10 with light from a light including a white LED or the like. In this case, the light to the display control device 10 is white.
• the display control unit 102 changes the display of the code screen SC based on the color information. For example, if the color information does not indicate a specific color of light, the display control unit 102 does not change the display of the code screen SC, and if the color information indicates a specific color of light, the display control unit 102 changes the display of the code screen SC.
• the specific color is a color that serves as a criterion for determining whether or not to change the display of the code screen SC.
• the specific color may be a predetermined color. In the example of Figure 3, the specific color may be red.
• the display control unit 102 does not change the display of the code screen SC if the color information does not indicate red light, and changes the display of the code screen SC if the color information indicates red light. In the examples of Figures 11 and 12, the specific color may be white.
• the display control unit 102 does not change the display of the code screen SC if the color information does not indicate white light, and changes the display of the code screen SC if the color information indicates white light
• the display control device 10 in variant 2-4 acquires color information regarding the color of light as light information.
• the display control device 10 changes the display of the code screen SC based on the color information. This allows the display control device 10 to display a flexible code screen SC on the display unit 15 that corresponds to the color of light indicated by the light information, thereby improving user convenience.
• the display control device 10 may estimate, based on the color information, that a reading unit 26 including a red LED or the like is nearby. In a situation where presentation-type reading is required, the display control device 10 may change the display of the code screen SC to make the code C easier to read and prevent the code C from taking a long time to read.
• the display control device 10 in variant 2-5 acquires color information based on the in-camera of the display control device 10. This allows the display control device 10 to acquire light information without using a special sensor for detecting light. For example, if the display control device 10 is a smartphone, the display control device 10 can acquire light information using the in-camera to which the reading unit 26 inevitably approaches when reading code C (the in-camera to which the reading unit 26 inevitably falls within the shooting range when reading code C).
• the display control device 10 of variant 2-6 can prevent a decrease in the visibility of the code on the code screen SC.
• the display control device 10 can prevent the code C from extending beyond the code screen SC, making the code C unreadable.
• Modification 2-7 For example, in the second embodiment, as in Modification 1-7, the display control unit 102 may change the display of the code screen SC by changing the brightness of the code screen SC.
• Modification 2-7 takes as an example a case in which the display control unit 102 changes the size of the code C and also changes the brightness of the code screen SC as in the second embodiment, but the display control unit 102 may change the brightness of the code screen SC without changing the size of the code C. In other words, the display control unit 102 may change the display of the code screen SC by changing only the brightness of the code screen SC.
• the display control unit 102 determines the size of the code C as a degree of change in display so that the larger the amount of change in light indicated by the light information, the larger the size of the code C, and displays the code C of that size on the code screen SC.
• the display control unit 102 determines the degree of brightness of the code screen SC as a degree of change in display so that the brighter the code screen SC, the larger the amount of change in light indicated by the light information, and displays the code screen SC with that degree of brightness.
• the display control device 10 determines the degree of change to the display of the code screen SC based on the light information, and changes the display of the code screen SC based on that degree. This allows the display control device 10 to display a more flexible code screen SC on the display unit 15 in accordance with the light information, thereby improving user convenience. For example, if the code screen SC is at maximum brightness in a darker-than-usual location, such as a movie theater or event venue, the code screen SC may stand out. However, in such cases, the display control device 10 can prevent the code screen SC from standing out by reducing the degree of brightness of the code screen SC.
• Modification 2-9 For example, in the second embodiment, similar to Modification 1-9, the display control unit 102 may repeatedly change the display of the code screen SC. Similarly to Modification 1-9, the display control unit 102 may switch the size of the code C or the brightness of the code screen SC. This process is different in that it is performed based on light information, but the process of repeatedly changing the display of the code screen SC is similar to Modification 1-9.
• the display control device 10 in variant 2-9 repeatedly changes the display of the code screen SC. This allows the display control device 10 to increase the probability that the code C will be read accurately. For example, in a situation where a standard-sized code C is more appropriate than a large code C, the code C will be read when the display control device 10 switches back from the large code C to the standard-sized code C, thereby increasing the probability that the code C will be read accurately.
• the display control device 10 may include an execution determination unit 105.
• the display control unit 102 may repeatedly change the display of the code screen SC while it is determined that a predetermined process is not to be executed. These processes are as described in Modification 1-10.
• the display control unit 102 may estimate the distance between the display control device 10 and the reading device 20 that reads the code C based on the light information, and change the display of the code screen SC based on this distance.
• the display control unit 102 in Variation 2-11 estimates the distance based on the brightness level indicated by the light information. For example, in a holding-type reading method, the brightness level increases as the display control device 10 gets closer to the reading unit 26, so the display control unit 102 estimates the distance so that the higher the brightness level, the closer the distance. In other words, the display control unit 102 estimates the distance so that the lower the brightness level, the farther the distance.
• the display control unit 102 may not change the display of the code screen SC when the distance is equal to or greater than a threshold, and may change the display of the code screen SC when the distance is less than the threshold.
• the display control device 10 of variant 2-11 estimates the distance between the display control device 10 and the reading device 20 that reads the code C based on the optical information, and changes the display of the code screen SC based on the distance. This allows the display control device 10 to display a flexible code screen SC on the display unit 15 that corresponds to the distance, thereby improving user convenience. For example, when the distance becomes short and it becomes necessary to prepare for reading the code C, the display control device 10 increases the size of the code C, thereby preventing it from taking a long time to read the code C.
• the modified example of the first embodiment may be applied to the display control device 10 of the third embodiment.
• the modified example of the second embodiment may be applied to the display control device 10 of the third embodiment.
• the display control unit 102 may determine whether or not the code C is about to be read by the reading unit 26 based on a predetermined determination method, and may brighten the code screen SC based on the result of the determination.
• the display control device 10 is not limited to a device operated by a user.
• the display control device 10 may also be a device that is not operated by a user.
• the display control device 10 may also be a device in a store.
• the display control device 10 may cause the display unit 15 to display a code screen SC including a code C generated based on a store ID that can identify the store.
• the user's device such as a smartphone, may correspond to the reading device 20.
• the store clerk points the display control device 10, which is a store tablet or the like, toward the user and prompts the user to read the code C.
• the display control device 10, which is a store tablet or the like may change the display of the code screen SC based on at least one of posture information and light information.
• program according to the present disclosure can also be configured as follows.
• the program further causes the display control device to function as a reference attitude setting unit that sets a reference attitude related to the attitude that serves as a reference; the display control unit detects a change in the attitude from the reference attitude, and changes the display of the code screen based on the change in the attitude from the reference attitude.
• the reference attitude setting unit sets the reference attitude based on the attitude information acquired when the code screen is displayed on the display unit.
• the display control unit changes the display of the code screen by changing the size of the code on the code screen.
• a program according to any one of (1-1) to (1-7).
• the display control unit changes the display of the code screen by changing a display position of a lower content that is displayed below the code on the code screen without changing a display position of an upper content that is displayed above the code on the code screen.
• the display control unit changes the display of the code screen by changing the brightness of the code screen.
• the display control unit determines a degree of change to the display of the code screen based on the posture information, and changes the display of the code screen based on the degree.
• (1-12) the display control unit repeatedly changes the display of the code screen.
• the program further causes the display control device to function as an execution determination unit that determines whether a predetermined process that is to be executed when the code is read by a reading device has been executed; the display control unit repeatedly changes the display of the code screen while it is determined that the predetermined process is not being executed.
• the program described in (1-12) The program described in (1-12).
• the program according to (2-2) or (2-3). (2-5) the program further causes the display control device to function as a reference degree setting unit that sets a reference degree related to a reference degree of brightness of the light, the display control unit changes the display of the code screen based on the change in the light from the reference degree.
• the reference degree setting unit sets the reference degree based on the light information acquired when the code screen is displayed on the display unit.
• the light information acquisition unit acquires color information relating to a color of the light as the light information; the display control unit changes the display of the code screen based on the color information.
• the light information acquisition unit acquires the color information based on an in-camera of the display control device.
• the display control unit changes the display of the code screen by changing the size of the code on the code screen.
• the display control unit changes the display of the code screen by changing a display position of a lower content that is displayed below the code on the code screen without changing a display position of an upper content that is displayed above the code on the code screen.
• the display control unit changes the display of the code screen by changing the brightness of the code screen.
• the display control unit determines a degree of change to the display of the code screen based on the light information, and changes the display of the code screen based on the degree.
• a program according to any one of (2-1) to (2-11). (2-13) the display control unit repeatedly changes the display of the code screen.
• the program further causes the display control device to function as an execution determination unit that determines whether a predetermined process that is to be executed when the code is read by a reading device has been executed; the display control unit repeatedly changes the display of the code screen while it is determined that the predetermined process is not being executed.
• the display control unit estimates a distance between the display control device and a reading device that reads the code based on the light information, and changes the display of the code screen based on the distance.
• the program according to the third embodiment can also be configured as follows. (3-1) causing the display control device to function as a display control unit that displays a code screen including the code on a display unit of the display control device; the display control unit determines whether the code is about to be read by a reading device based on a predetermined determination method, and changes the display of the code screen based on the result of the determination. program. (3-2)
• the predetermined determination method is a determination method based on the posture information described in any one of (1-1) to (1-13), and has any one of the functions of (1-1) to (1-13).
• (3-3) The predetermined determination method is a determination method based on the optical information described in any one of (2-1) to (2-15), and has any one of the functions of (2-1) to (2-15).

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• 2024
  • 2024-03-27 JP JP2026509563A patent/JPWO2025203353A1/ja active Pending
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