JP2019200797A - Portable information code display device - Google Patents

Abstract

To provide a configuration for more quickly and surely reading an information code when performing a hold-up operation for allowing a reading device to read the information code in a portable information code display device capable of displaying the information code.SOLUTION: A portable information code display device 10 includes: a display part 12 capable of displaying an image; a display control part capable of controlling display to be performed by the display part 12; and a direction detection part capable of detecting a direction to which the display part 12 directs. The display control part is configured to, when it is detected that the direction of the display part 12 is a predetermined direction by the direction detection part, control the display part 12 to display at least an information code C in a predetermined readable state, and to maintain the display of the information code C in the readable state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a portable information code display device.

  In recent years, the use of information codes has become increasingly widespread, and it has been used not only for media such as paper, but also for displaying information codes on mobile devices such as tablet terminals and smartphones and making them read by other devices. Yes. As a technique for displaying and using an information code on a display device, for example, a technique such as Patent Document 1 has been proposed.

JP 2009-271553 A

  By the way, in a portable display device having a function of displaying an information code, the display screen may not be in a state suitable for reading at the timing when the information code is read.

  For example, in recent years, portable terminals have been proposed in which the backlight is turned off and the display is turned off when no button operation or touch panel operation is performed for a certain period. When an information code is displayed on such a portable terminal and is read by an external reader, after the display operation for displaying the information code on the display unit is performed, until it is actually read by the reader If it takes too long, the backlight will turn off before the reading of the information code by the reader is completed, or the display will be turned off. Can not be. In particular, when reading, the display screen must be directed to the reading device side, and the operator can hardly confirm the display state of the display screen while the display device is facing in this way. There is a possibility that the user keeps hesitating without noticing the power-off state of the display.

  In addition, this type of problem is also a concern with a configuration in which an information code and another image are switched and displayed, or a configuration in which the information code is displayed as part of a moving image, as in the display device of Patent Document 1. Is done. For example, in a configuration in which the information code is displayed in a readable configuration and in a configuration in which other images (such as logo mark images in the example of Patent Document 1) are displayed, the display device May be displayed at a timing when the image is read by the reading device, or another image that is not an information code is displayed, or the information code is deformed and displayed in a configuration that is difficult to read. As described above, in a configuration in which it is not guaranteed that the display is readable at the timing when the user hesitates, there is a problem that it takes time until the reading succeeds and the reading is likely to fail.

  Note that these examples are merely examples, and in portable display devices, there are various cases in which the display screen may be difficult to read at the timing of reading other than these examples. Even in this case, problems such as reading delay and failure are likely to occur.

  The present invention has been made in order to solve the above-described problems, and is read when a fringe operation for causing the reading device to read the information code is performed in a portable information code display device capable of displaying the information code. An object of the present invention is to provide a configuration that is less prone to inconveniences such as delays and failures.

In order to achieve the above object, a portable information code display device according to claim 1 of the claims includes:
A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
With
The display control unit
The direction detection unit displays the display at least when a predetermined default screen in which the information code is not displayed in a predetermined readable state on the display unit or a display screen of an application program that does not display the information code is displayed. When it is detected that the direction of the part is the predetermined direction, the display state of the display unit is switched to a state where the information code is displayed in the readable state.

The portable information code display device according to claim 2 comprises:
A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
With
The display control unit
When the direction detecting unit detects that the direction of the display unit is the predetermined direction, the display unit displays at least the information code in a predetermined readable state while the reading of the information code is performed. The display in the possible state is maintained until a predetermined code display cancellation condition is satisfied,
Furthermore, an operation control unit that performs at least one of a predetermined return operation and a predetermined power saving operation after the predetermined code display cancellation condition is satisfied is provided.

The portable information code display device according to claim 3 is:
A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
With
The display control unit
When the direction detecting unit detects that the direction of the display unit is the predetermined direction, the display unit displays at least the information code in a predetermined readable state while the reading of the information code is performed. Keep the display in a possible state,
Even when the direction detecting unit detects that the direction of the display unit is the predetermined direction, when the portable information code display device is in a predetermined moving state, the information code is read. It is characterized by not performing control to display in a possible state.

The portable information code display device according to claim 4,
A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
A storage unit storing a plurality of types of information codes that can be displayed on the display unit;
A communication unit capable of communicating with an external device;
With
The display control unit
When the direction detecting unit detects that the direction of the display unit is the predetermined direction, the display unit displays at least the information code in a predetermined readable state while the reading of the information code is performed. The plurality of types of information stored in the storage unit in response to communication with the external device via the communication unit when maintaining the display in a possible state and displaying the information code in the readable state One of the codes is selected and displayed.

The portable information code display device according to claim 5 is:
A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
An operation unit that is permitted to perform the display of the information code;
With
The display control unit
When the permission operation is performed on the operation unit and the direction detection unit detects that the display unit is in the predetermined direction, the display unit reads at least a predetermined information code. Maintaining the display of the information code in the readable state while displaying in a possible state,
When the permission operation is not performed on the operation unit, the display of the information code is prohibited even when the direction of the display unit is detected to be the predetermined direction. And

According to the first aspect of the present invention, the display control unit determines the direction of the display unit by the direction detection unit when at least a predetermined default screen or a display screen of an application program that does not display the information code is displayed on the display unit. Is detected, the display state of the display unit is switched to a state where the information code is displayed in a readable state.
According to the present invention, even if a display screen of an application program that does not display a default screen or information code is displayed on the display unit immediately before reading, the display unit is changed in a predetermined direction. It is possible to easily and quickly switch to a screen for reading an information code (a screen on which the information code is displayed in a readable state). For example, the above configuration is used in a case where the time for displaying the default screen or the display screen of the application program that does not display the information code is longer than the time for displaying the information code. This is particularly advantageous when used.

In the invention of claim 2, the display control unit displays the information code in a readable state when the direction detection unit detects that the direction of the display unit is a predetermined direction. And a state in which the information code is displayed in a readable state is maintained until a predetermined code display release condition is satisfied. An operation control unit is provided that performs at least one of a predetermined return operation and a predetermined power saving operation after a predetermined code display cancellation condition is satisfied.
According to this configuration, when the display unit is read in a predetermined direction, the display of the information code can be stabilized and easily read until the code display release condition is satisfied, and the code display is released. Since the return operation or the power saving operation can be smoothly performed after the condition is satisfied, it is difficult to cause a problem that unnecessary code display continues indefinitely after the reading is completed. For example, in the configuration in which the return operation is performed after the code display release condition is satisfied, it is easy to stop unnecessary code display and return to a predetermined return screen after the reading is completed. In the configuration in which the power saving operation is performed after the code display release condition is satisfied, unnecessary code display can be stopped and power consumption can be suppressed after the reading is completed.

In the invention of claim 3, the display control unit is in a state where the portable information code display device is in a predetermined movement state even when the direction detection unit detects that the direction of the display unit is a predetermined direction. In some cases, the control for displaying the information code in a readable state is not performed.
When reading the information code displayed on the display unit, there is a high possibility that the device will be in a stationary state or a state close thereto. Conversely, when the device is in a moving state, even if the display unit is in a “predetermined orientation” , Likely not trying to read. Therefore, if the control for displaying the information code in a readable state is not performed when the portable information code display device is in the “predetermined movement state”, the information code can be read at an unnecessary time. It becomes easy to suppress waste such as being displayed.

The invention of claim 4 is configured to include a storage unit storing a plurality of types of information codes that can be displayed on the display unit, and a communication unit capable of communicating with an external device. Then, when displaying the information code in a readable state, the display control unit selects one of a plurality of types of information codes stored in the storage unit according to communication with the external device via the communication unit. Are displayed.
In this configuration, one of a plurality of types of information codes is selected and displayed in accordance with communication with an external device via the communication unit. Therefore, even if there are a plurality of types of information codes that can be displayed, they should be displayed. An information code can be automatically selected. Therefore, by changing the information received from the external device by the portable information code display device according to the environment in which the reader is installed, etc., an appropriate information code is automatically selected from a plurality of types of information codes. Can be displayed.

The invention according to claim 5 is configured to include an operation unit that is permitted to perform display when permitting display of the information code. The display control unit prohibits the display of the information code even when it is detected that the direction of the display unit is the predetermined direction when the operation unit is not permitted to perform the operation. When the operation unit is permitted to operate and the direction detection unit detects that the display unit is in the predetermined direction, the display unit displays at least the information code in a predetermined readable state. The display of the information code in a readable state is maintained.
In this configuration, even when the direction detection unit detects that the direction of the display unit is the predetermined direction, the information code is in a readable state unless the user intentionally operates the operation unit. It is not displayed. As a result, display of an unintended information code is prevented, and security related to display of the information code can be improved.

In the invention of claim 6, the display control unit is configured to perform control to switch the display on the display unit to a predetermined suppression state when a predetermined suppression condition is satisfied, and the direction detection unit when in the predetermined suppression state When the display unit detects that the direction of the display unit is the predetermined direction, the predetermined suppression state is stopped, and the information code is displayed in the readable state on the display unit, and the information code is displayed in the readable state. Is configured to maintain.
According to the present invention, when a predetermined suppression condition is satisfied, the display on the display unit can be switched to the suppression state, which facilitates power saving. On the other hand, in such a power saving structure, there is a problem in that a reading operation is easily caused if a reading operation is performed in a suppressed state. When an operation of turning in the direction is performed, the suppression state can be stopped and the information code can be displayed in a readable state. Is less likely to occur.

In the invention of claim 7, the readable state is a state in which light is irradiated in a predetermined irradiation state from at least the backlight of the display unit. Then, the display control unit is configured to perform a suppression control that suppresses turning off the backlight of the display unit or irradiating light from the backlight of the display unit more than in a predetermined irradiation state when a predetermined suppression condition is satisfied. Yes, when the direction detection unit detects that the display unit is in the predetermined direction in the predetermined suppression state, the predetermined suppression state is stopped, and light is emitted from the backlight of the display unit in the predetermined irradiation state. It is the structure which maintains the state by which the information code was displayed, irradiating.
According to the present invention, when a predetermined suppression condition is satisfied, it is possible to perform backlight suppression control or suppression control to suppress irradiation of light from the backlight, and power in the backlight in which power consumption is a concern. Consumption can be effectively reduced. On the other hand, in such a power saving structure, when a reading operation is performed in a state where the backlight is turned off or the irradiation with the backlight is suppressed, it is difficult to recognize the information code on the reading device side, and Although there is a problem that failure is likely to occur, in the invention of claim 7, when an operation of turning the display unit in a predetermined direction is performed with the backlight turn-off control or suppression control being performed, the backlight is set to be predetermined. Since the information code can be displayed in a clearly readable state by returning to the irradiation state, it is difficult to cause a reading defect due to a reading operation performed while the backlight is turned off or suppressed. .

In the invention of claim 8, the display control unit detects that the direction of the display unit is a predetermined direction when the predetermined permission condition for permitting the display of the information code is satisfied. In addition, the display unit is configured to display the information code in the readable state while displaying the information code in the readable state.
According to this invention, the characteristic operation of “displaying the information code in a readable state when the display unit is in a predetermined direction” is limited to a case where a predetermined permission condition is satisfied. This is particularly advantageous in applications that can be performed and the above characteristic operations should not be performed uniformly.

In the invention of claim 9, the direction detection unit can detect a state in which the display unit faces vertically downward or diagonally downward, and the display control unit can detect whether the display unit is vertically downward or vertically diagonal by the direction detection unit. When a state of facing downward is detected, the information code is displayed on the display unit in a readable state, and the display of the information code in the readable state is maintained.
In this configuration, when it is desired to use the display unit so as to be directed downward or diagonally downward (for example, the reading device is arranged so that the display of the display unit can be recognized when the display unit is directed downward or diagonally downward). Is advantageous). In particular, when the display unit is used in such a manner that the display unit is tilted downward or obliquely downward, it is difficult for the user to visually observe the display unit when reading the display unit. There is a problem that it is difficult to identify whether a delay or failure has occurred, or due to other factors, but this configuration can significantly reduce at least the delay and failure caused by the display timing not matching. This makes it easier to deal with the above problems.

In the invention according to claim 10, the display control unit continuously displays the information code on the display state on the display unit when the direction detecting unit detects that the direction of the display unit is the predetermined direction. In such a state, it is fixed (maintained) for a certain period.
In this configuration, since the display of the information code can be fixed (maintained) for a certain period when the display unit is oriented in a predetermined direction, more stable code display is possible, and reading delays and failures are further suppressed. Can do. For example, in this type of portable information code display device, there is a possibility that the display unit may be touched unintentionally while hesitating. In such a case, the information code display mode changes. It is particularly effective if the above-described invention is applied to those that can be configured.

In the invention of claim 11, the display control unit displays the display state on the display unit, the display state in which the information code is in a readable state, and another figure or other information different from the configuration of the information code. It is configured to be able to change to a different state. When the direction detection unit detects that the display unit is in a predetermined direction, the display unit displays the information code in a readable state and maintains the display of the information code in the readable state. It is the composition to do.
In this way, the display can be changed between a display state in which the information code can be read and a state in which another figure or other information different from the configuration of the information code is displayed. Then, it is possible to realize a plurality of types of display modes that cannot be realized with a configuration in which only information codes are continuously displayed. However, by simply switching between the display of the information code and the display of another figure or other information, another figure or other information is displayed instead of the information code when the information code is read. In this case, reading is delayed until the information code is displayed again in a readable manner. In contrast, according to the present invention, the information code can be read in a state where the information code is read (i.e., when the display unit is set to the “predetermined direction”). Thus, the information code can be read more quickly and reliably. Therefore, the timing when the display unit is turned to the “predetermined orientation” and the actual reading timing are not greatly displaced, and a large time lag is unlikely to occur from when the display unit is oriented to the predetermined orientation until the reading result is obtained. A decrease in feeling can be more effectively suppressed.

In the twelfth aspect of the invention, the display control unit displays the display state on the display unit as a display state in which the information code is readable, and a display state in which the code area of the information code is not readable. When the direction of the display unit detected by at least the direction detection unit becomes a predetermined direction, the information code is displayed in a readable state on the display unit, and the information code The display is maintained in a readable state.
Thus, if the display unit is configured to be able to change between a display state in which the information code can be read and a display state in which the code area of the information code cannot be read, the information can be changed. A dynamic display rich in changes that cannot be realized with a configuration in which only codes are continuously displayed is possible. However, simply performing dynamic display may cause the code area to be displayed in a state where it cannot be read when attempting to read the information code. In this case, it can be read again. Reading will be delayed until it is displayed in the correct state. In contrast, according to the present invention, the information code can be read in a state where the information code is read (i.e., when the display unit is set to the “predetermined direction”). Thus, the information code can be read more quickly and reliably. Therefore, the timing when the display unit is turned to the “predetermined orientation” and the actual reading timing are not greatly displaced, and a large time lag is unlikely to occur from when the display unit is oriented to the predetermined orientation until the reading result is obtained. A decrease in feeling can be more effectively suppressed.

In a thirteenth aspect of the invention, when the display control unit displays the information code in a readable state, the display control unit corrects an image corrected based on an angle formed by a reference direction serving as a reference in a predetermined direction and a direction in which the display unit faces. It is configured to display.
As described above, when displaying the information code in a readable state, if the information code is displayed in a state corrected based on the angle formed by the reference direction and the direction of the display unit, the information code is adjusted to the inclination with respect to the reference direction. This makes it easier to read in the image state.

FIG. 1 is an explanatory diagram schematically showing a portable information code display device according to the first embodiment and an information code reading device for reading an information code displayed on the display device. FIG. 2 is a block diagram illustrating the electrical configuration of the portable information code display device according to the first embodiment. FIG. 3 is a block diagram illustrating an electrical configuration of a reading device that reads an information code displayed on the portable information code display device according to the first embodiment. FIG. 4 is an explanatory diagram illustrating an example in which a default screen is displayed in the portable information code display device according to the first embodiment. FIG. 5 is an explanatory diagram illustrating an example of a display screen of the application program in the portable information code display device according to the first embodiment. FIG. 6 is an explanatory diagram for explaining the angle formed by the direction of the combined acceleration obtained from the accelerations in the respective axial directions detected by the three-axis sensor and the direction in which the display unit faces (Z-axis positive direction). FIG. 7 is an explanatory diagram showing a state when the display unit is operated so as to be in a predetermined direction in the portable information code display device according to the first embodiment. FIG. 8 is an explanatory diagram illustrating a display example of an information code when the display unit is operated to have a predetermined orientation in the portable information code display device according to the first embodiment. FIG. 9 is a flowchart illustrating the flow of display processing in the portable information code display device according to the first embodiment. FIG. 10 is a flowchart illustrating the flow of display processing in the portable information code display device according to the second embodiment. FIG. 11 is an explanatory diagram conceptually illustrating the portable information code display device according to the third embodiment. FIG. 12 is an explanatory diagram conceptually illustrating a display example on the portable information code display device according to the third embodiment. FIG. 13 is an explanatory diagram for conceptually explaining a display example of a moving image on the portable information code display device according to the fourth embodiment. FIG. 14 is a flowchart illustrating the flow of display processing in the portable information code display device according to the fifth embodiment. FIG. 15 is a flowchart illustrating the flow of display processing in the portable information code display device according to the sixth embodiment. FIG. 16 is an explanatory diagram for explaining the concept of the inclination angle in the portable information code display device according to the seventh embodiment. FIG. 17A is an explanatory diagram for conceptually explaining the outer shape of the code in the captured image when the information code displayed on the tilted display surface is captured, and FIG. 17B illustrates the concept of correction display. It is explanatory drawing demonstrated. FIG. 18 is a flowchart illustrating the flow of display processing in the portable information code display device according to the eighth embodiment. FIG. 19 is a block diagram illustrating an electrical configuration of a portable information code display device or the like according to the eighth embodiment. FIG. 20 is a flowchart illustrating the flow of display processing in the portable information code display device according to the ninth embodiment. 21A is an explanatory diagram illustrating a display example of an information code displayed on the display unit when the direction in which the display unit faces is the first direction, and FIG. 21B is a direction in which the display unit faces. It is explanatory drawing which shows the example of a display of the information code displayed on a display part when is in 2nd direction. FIG. 22 is an explanatory diagram for explaining a state in which the direction of the display unit is changed with respect to the information code reader. FIG. 23 is a flowchart illustrating the flow of display processing in the portable information code display device according to the tenth embodiment.

[First embodiment]
Hereinafter, a first embodiment embodying the present invention will be described with reference to the drawings.
(Outline of portable information code display device)
First, an outline of the portable information code display device 10 will be described. A portable information code display device (hereinafter, also simply referred to as a display device) 10 shown in FIGS. 1 and 2 is configured to be used while being held by a user. The display device 10 is configured as, for example, a portable information terminal that is carried by a user and used in various places, and has a function of generating and displaying an information code C such as a barcode or a two-dimensional code. doing. In addition, the display apparatus 10 should just be portable information apparatuses which have displays, such as a mobile telephone, a smart phone, and a wearable terminal, and functions other than a display function are not specifically limited.

  The display device 10 has an outer case formed of a housing made of, for example, a resin material or a metal material. In addition, a display unit 12 capable of displaying an image and an operation unit 13 (such as a touch panel) for performing an information input operation from the outside are assembled in the casing, and an integrated device structure is obtained. ing.

  As shown in FIG. 2, the display device 10 mainly includes a control circuit 11, a display unit 12, an operation unit 13, a memory 14, a triaxial sensor 15, a communication unit 16, a clock unit 17, and the like. These are mounted on a printed wiring board (not shown) or housed in a housing.

  The memory 14 is configured by a known storage device such as a semiconductor memory device, and corresponds to, for example, a RAM, a ROM, and other nonvolatile memories. The RAM of the memory 14 is configured such that a work area or the like used by the control circuit 11 at the time of each processing such as arithmetic operation and logical operation can be secured. In addition, the ROM stores in advance a predetermined program that can execute processing for generating an information code C, which will be described later, and a system program that can control each piece of hardware such as the display unit 12 and the three-axis sensor 15.

  The control circuit 11 includes a microcomputer that can control the display device 10 as a whole, and includes a CPU, a system bus, an input / output interface, and the like, and has an information processing function. Various input / output devices (peripheral devices) are connected to the control circuit 11 via a built-in input / output interface. In the case of this configuration, the display unit 12, the operation unit 13, the memory 14, and the triaxial sensor. 15, a communication unit 16, a clock unit 17, and the like are connected. The control circuit 11 corresponds to an example of a display control unit, and is configured to be able to control display performed on the display unit 12.

  The operation unit 13 includes an operation switch such as a function key or a numeric keypad, or a touch panel. For example, when the user of the display device 10 operates the operation unit 13, an operation corresponding to the operation content is performed on the control circuit 11. It is configured to give a signal. The communication unit 16 is configured to communicate with an external device using, for example, a known communication method (wireless LAN communication, infrared communication, Bluetooth (registered trademark) communication, or the like). The clock unit 17 is configured by a known clock circuit or the like, and is connected to the control circuit 11 so as to be communicable. The clock unit 17 functions to measure time and elapsed time from a predetermined time point (for example, a time point when the operation unit 13 is operated).

  The triaxial sensor 15 and the control circuit 11 correspond to an example of a “direction detection unit”, and are configured to be able to detect that the direction in which the display unit 12 faces is a predetermined direction. The triaxial sensor 15 is configured by a known acceleration sensor or the like, and in this configuration, the display device 10 is configured to measure accelerations in predetermined three directions orthogonal to each other. Specifically, as shown in FIGS. 4, 7, and the like, the predetermined longitudinal direction of the display device 10 is the Y-axis direction, and the thickness direction of the display device 10 (the direction perpendicular to the longitudinal direction is the display unit 12. The direction in which the front surface and the opposite back surface face each other) is the Z-axis direction (not shown), and the Y-axis direction and the width direction orthogonal to the Z-axis direction are the X-axis direction. One side in the Z-axis direction (the side displayed by the display unit 12) is the Z-axis positive side, and the other side opposite to this is the Z-axis negative side. Specifically, for example, a transparent plate is arranged so as to cover each display element constituting the display unit 12, and the direction orthogonal to the outer surface (surface) of the transparent plate is the Z-axis direction. The direction on the positive side of the Z axis is the “direction in which the display unit 12 faces”. A technique for specifying the acceleration in the predetermined direction and the vertical direction by a triaxial acceleration sensor is well known and will not be described in detail. For example, it is shown in Japanese Patent Application Laid-Open Nos. 2003-302419 and 2007-325722. In addition to the methods described above, various known methods can be used. With such a configuration, it is possible to measure the degree of acceleration in each of the X-axis direction, the Y-axis direction, and the Z-axis direction. For example, it is possible to specify which direction is the vertical direction in the display device 10. It is like that.

  The display unit 12 corresponds to an example of a display unit that displays an image, and is configured by a known display device such as a liquid crystal display or an organic EL display. The information processing result by the control circuit 11, the operation state of the display device 10, and the like. Various types of information can be displayed. In the following description, an example in which the display unit 12 is configured as a known liquid crystal display provided with a backlight will be described as a representative example.

  The display unit 12 functions to display the information code C generated by the control circuit 11 as a moving image or as a part of a still image to be switched. The information code C displayed on the display unit 12 may be a QR code (registered trademark), a data matrix code, a maxi code, another two-dimensional code, or the like, or a one-dimensional code such as a barcode. Also good.

(Information code reader)
Next, the information code reading device 20 will be described. The information code reading device (hereinafter, also simply referred to as a reading device) 20 shown in FIGS. 1, 3 and the like is configured as a code reader capable of reading an information code in hardware, and has an outer case formed by a case. Various electronic components are accommodated in this case. The reading device 20 has a function of reading an information code such as a barcode or a two-dimensional code displayed on the display device 10. 1 and the like illustrate the stationary information code reader 20 that can be used by being placed on a desk or the like, but a portable configuration may also be used. Moreover, the apparatus used by being assembled | attached to another structure (a desk, a pillar, a wall, etc.) may be used.

  As shown in FIG. 3, the reading device 20 mainly includes an optical system such as an illumination light source 21, a light receiving sensor 23, a filter 25, and an imaging lens 27, a memory 35, a control circuit 40, an operation switch 42, and a liquid crystal display. And a power supply system such as a power switch 41 and a battery 49. These are mounted on a printed wiring board (not shown) or housed in a case (not shown).

  The optical system includes an illumination light source 21, a light receiving sensor 23, a filter 25, an imaging lens 27, and the like. The illumination light source 21 functions as an illumination light source capable of emitting illumination light Lf, and includes, for example, a red LED and a diffusion lens, a condensing lens, and the like provided on the emission side of the LED. In this configuration, the illumination light sources 21 are provided on both sides of the light receiving sensor 23, and are directed toward the reading object R (for example, the display device 10 described above) through a reading port (not shown) formed in the case. The illumination light Lf can be irradiated.

  The light receiving sensor 23 is configured to be able to receive light from the reading object R or the information code C (for example, reflected light Lr reflected by the illumination light Lf being irradiated on them). An area sensor in which light receiving elements, such as solid-state imaging elements, are two-dimensionally arranged corresponds to this. The light receiving sensor 23 is mounted on a printed wiring board (not shown) so that incident light incident through the imaging lens 27 is received by the light receiving surface 23a.

  The filter 25 is an optical low-pass filter that allows passage of light that is less than or equal to the wavelength of the reflected light Lr and blocks passage of light that exceeds the wavelength, and a reading port (not shown) formed in the case. It is provided between the imaging lens 27. Thereby, unnecessary light exceeding the wavelength equivalent of the reflected light Lr is prevented from entering the light receiving sensor 23. Further, the imaging lens 27 is constituted by, for example, a lens barrel and a plurality of condensing lenses accommodated in the lens barrel. In the present embodiment, the imaging lens 27 is provided at a reading port (not shown) formed in the case. The incident reflected light Lr is condensed and functions to form a code image of the information code C on the light receiving surface 23 a of the light receiving sensor 23.

  Although an example of the optical system is shown here, various other configurations are adopted as long as the configuration is a known configuration capable of capturing the information code C displayed on the display unit 12 including a liquid crystal display. Also good.

  The microcomputer system includes an amplification circuit 31, an A / D conversion circuit 33, a memory 35, an address generation circuit 36, a synchronization signal generation circuit 38, a control circuit 40, an operation switch 42, a liquid crystal display 46, a communication interface 48, and the like. Yes. This microcomputer system is configured around a control circuit 40 and a memory 35 that can function as a microcomputer (information processing apparatus), and the image signal of the information code C imaged by the optical system described above is signaled in hardware and software. It can be processed.

  An image signal (analog signal) output from the light receiving sensor 23 of the optical system is input to the amplifier circuit 31 and amplified by a predetermined gain, and then input to the A / D conversion circuit 33 to convert the analog signal into a digital signal. Is done. The digitized image signal, that is, image data (image information) is input to the memory 35 and stored in the image data storage area of the memory 35. The synchronization signal generation circuit 38 is configured to generate a synchronization signal for the light receiving sensor 23 and the address generation circuit 36. The address generation circuit 36 is based on the synchronization signal supplied from the synchronization signal generation circuit 38. Thus, the storage address of the image data stored in the memory 35 can be generated.

  The memory 35 is configured by a known storage device such as a semiconductor memory device, for example, such as a RAM, a ROM, and other nonvolatile memories. In addition to the above-described image data storage area, the RAM of the memory 35 is configured to be able to secure a work area and a reading condition table that are used by the control circuit 40 in each processing such as arithmetic operation and logical operation. . The ROM stores in advance a predetermined program that can execute reading processing and the like, and a system program that can control each hardware such as the illumination light source 21 and the light receiving sensor 23.

  The control circuit 40 is configured by, for example, a microcomputer that can control the reading device 20 as a whole, and includes a CPU, a system bus, an input / output interface, and the like, and has an information processing function. Various input / output devices (peripheral devices) are connected to the control circuit 40 via a built-in input / output interface. In this embodiment, a power switch 41, an operation switch 42, a liquid crystal display 46, A communication interface 48 or the like is connected. In addition, a host computer HST corresponding to a host system of the reading device 20 can be connected to the communication interface 48.

  The power supply system includes a power switch 41, a battery 49, and the like. When the power switch 41 managed by the control circuit 40 is turned on and off, the conduction of the drive voltage supplied from the battery 49 to each device and each circuit described above is established. Or shut off is controlled. The battery 49 is a secondary battery that can generate a predetermined DC voltage, and corresponds to, for example, a lithium ion battery. In addition, although the structure which receives the electric power supply from the battery 49 was illustrated in FIG. 3, if it is a stationary type structure, you may become a structure which receives an electric power supply from an external commercial power source.

(Display control)
Next, display control performed in the display device 10 will be described.
In the display device 10, for example, a default screen as shown in FIG. 4 is displayed after the power is turned on. On this default screen, icons for starting various application programs are displayed. Yes. In the display device 10, for example, when an operation for selecting any icon displayed on the default screen as shown in FIG. 4 (for example, an operation for touching the icon) is performed, an application program corresponding to the icon is activated. To be executed. As the application program, there are programs that realize functions such as telephone, music playback, video playback, e-mail, clock display, photo shoot, browser, electronic money settlement, and the default screen shown in FIG. The corresponding icon is displayed.

  For example, when the icon corresponding to the browser is selected from the icons displayed on the default screen shown in FIG. 4, the browser program is started, and a site on the Internet can be displayed as shown in FIG. ing. The display example is not limited to this example. For example, when an icon corresponding to a clock program is selected, the clock program is activated and a clock screen is displayed. Alternatively, when an icon corresponding to a telephone program is selected, the telephone program is started and a screen for making a call is displayed.

  On the other hand, while the display device 10 is activated, a program for performing processing as shown in FIG. 9 is executed in parallel with the display control of the default screen shown in FIG. 4 and the display control by the application program as shown in FIG. It has become so. The processing in FIG. 9 is executed, for example, after power-on or after completion of the processing in S4. With the start of processing, the orientation of the display device 10 is detected, and the direction in which the display unit 12 faces is “ It is determined whether or not it is “predetermined direction” (S1). In the process of S1, it is determined whether or not the triaxial sensor 15 has detected a state in which the display unit 12 is directed vertically downward or obliquely downward.

  In this configuration, as shown in FIG. 6, the accelerations αx, αy, αz in the X, Y, and Z axis directions are continuously detected by the triaxial sensor 15, and these accelerations αx, αy, αz are synthesized. Thus, the direction of the acceleration αs applied to the display device 10 can be continuously specified. In the process of S1 performed every predetermined short time, an angle θ between the combined acceleration αs and the positive Z-axis direction at the time of the process of S1 is obtained, and the angle θ is determined for a certain period of time (the above-described other The display duration time of the images P2 and P3 is shorter than, for example, 0.1 second or 0.01 second), and is 0 ° or more and a predetermined threshold θα (for example, 20 °) or less. Judging whether or not. That is, when the angle θ between the direction of the combined acceleration αs and the positive Z-axis direction is 0 ° or more and the threshold θα or less, it is estimated that the gravitational acceleration direction and the Z-axis positive direction are closely related. Since there is a high possibility that the display unit 12 is downward or diagonally downward, such a state is detected in S2. In this configuration, the angle θ formed by the combined acceleration αs and the positive Z-axis direction is “a value indicating the direction in which the display unit 12 (display unit) faces”, and “the angle θ is not less than 0 ° and not more than the threshold θα. The “case like this” is “when the direction of the display unit 12 (display unit) detected by the direction detection unit becomes“ predetermined direction ””. Further, “the direction in which the display unit 12 faces when the angle θ is 0 ° or more and the threshold θα or less” is the “predetermined direction”.

  When it is detected in S1 that the direction of the display unit 12 is the “predetermined direction” (that is, the angle θ is 0 ° or more and the predetermined threshold θα or less for a certain time or more). Is displayed), the display on the display unit 12 is switched to a scheduled image of the information code C (FIG. 7, FIG. 8, etc.), and the information code C (QR code (registered in the examples of FIGS. 7 and 8) is registered). The display is maintained in a readable state (fixed) with the image of the trademark)) displayed (S2).

  It should be noted that “when the angle θ is detected to be 0 ° or more and a predetermined threshold value θα or less for a certain time or more” described above is “the display unit 12 (display unit) is vertically downward or slanted vertically”. This corresponds to “when a downward facing state is detected”.

  Thus, in this configuration, as shown in FIG. 7, when the user turns the display device 10 toward the reading device 20 and the display unit 12 is directed vertically downward or diagonally downward, it is constant. Since the angle θ is not less than 0 ° and not more than the predetermined threshold value θα for a time or more, the process proceeds to Yes in S1 and interrupts the display of the default screen as shown in FIG. 4 or the application program as shown in FIG. The images of the information code C as shown in FIG. 8 are continuously displayed. On the other hand, after the process of FIG. 9 is started, the direction of the display unit 12 is not “predetermined direction” (that is, “the angle θ is 0 ° or more and a predetermined threshold θα or less for a certain time or more”). (While the condition is not satisfied), the process continues to No in the processing of S1 performed every predetermined short time, and during that time, the display of the default screen shown in FIG. 4 or the display by the application program as shown in FIG. Etc. will continue.

  The information code C to be displayed in the process of S2 may be displayed, for example, as the information code displayed at the closest time retroactively from the time of the process of S2, or generated at the closest time retroactive to the time of the process of S2. The displayed information code may be displayed. Or you may make it display the information code registered beforehand for displaying by the process of S2. Note that when such an information code does not exist, the processing of FIG. 9 may not be performed.

  After the processing of S2, the information code C is continuously displayed in a configuration that can be read by the information code reading device 20, and then a predetermined time (for example, 5 seconds) is continued. The display control is continued. On the other hand, after the process of S2, “the information code C is continuously displayed in a configuration that can be read by the information code reading device 20”, a predetermined time (for example, 5 seconds) elapses in the display state. If so, the process proceeds to Yes in S3, and the screen control process in S4 is performed. Because of such a configuration, if the display unit 12 is placed on the reading device 20 during the period from Yes in S1 to Yes in S3, the information code C displayed on the display unit 12 is read by the reading device 20. Can be read more reliably.

  In this configuration, the control circuit 11 corresponds to an example of a display control unit, and the direction detection unit detects that the direction of the display unit 12 is “predetermined direction” (when the process proceeds to Yes in S1). In addition, the display unit 12 is controlled so that the information code C is displayed in a readable state, and the state (the state in which the information code C is displayed in a readable state) is canceled by a predetermined code display. The configuration is maintained for a certain period of time until the condition is satisfied (that is, until the process proceeds to Yes in S3). Further, in this configuration, for example, after advancing to Yes in S <b> 2, a predetermined time has elapsed since a certain time has elapsed (that is, a state in which the display unit 12 (display unit) is directed vertically downward or diagonally downward is detected). ) Is equivalent to “satisfaction of a predetermined release condition”. In the example of FIG. 9, when the predetermined time has elapsed after proceeding to Yes in S <b> 2, the process proceeds to Yes in S <b> 3 and screen control is performed in S <b> 4, but after proceeding to Yes in S <b> 1, the operation unit 13. If a predetermined release operation is performed, the process may proceed to Yes in S3. In this case, the release operation is equivalent to “establishment of a predetermined release condition”.

  In the process of FIG. 9, when the process proceeds to Yes in S3, a predetermined screen control process is performed (S4). The control of S4 includes the backlight turn-off process, the process of suppressing the backlight more than in S2, the process of displaying another screen different from the screen of S2, the screen display off, the display unit power off, Various processes such as power-off of the display device 10 and a process of returning to the display screen before the process of S2 are included. Specifically, control for reducing power consumption can be suitably used as compared with the display state of S2. For example, an operation for completely stopping the display on the display unit 12 may be used. Control that suppresses power while maintaining display (for example, control to turn off the backlight, control to suppress the amount of light of the backlight, control to display as a black screen, etc.) may be used. Or sleep control etc. which drive the CPU mounted in the display apparatus 10 intermittently or suppress a drive clock may be used. Alternatively, as the control of S4, a process of returning to the display screen before the process of S2 may be performed. For example, before the process of S2, the browser is activated and the screen of a predetermined site on the Internet is displayed on the display unit 12. If the information code is displayed in S2, the information code is displayed, and if the process proceeds to Yes in S3, the screen before S2 processing (that is, the screen of the predetermined site on the Internet) is displayed. The return process may be performed as described above. In this configuration, the control circuit 11 that performs the process of S4 corresponds to an example of an “operation control unit”, and at least one of a predetermined return operation and a predetermined power saving operation after a predetermined code display release condition is satisfied. It works to do that.

  In this configuration, when the information code C is not displayed in a readable state on the display unit 12 (for example, as shown in FIGS. 4 and 5, a predetermined default screen or information code C is not displayed on the display unit 12. Even when the application program display screen is displayed, the process of FIG. 9 is performed in parallel. Therefore, as shown in FIGS. 4 and 5, even when the information code C is not displayed on the display unit 12, the direction detection unit detects that the direction of the display unit 12 is “predetermined direction”. 9, the process proceeds to Yes in S <b> 1 of FIG. 9, and the display state of the display unit 12 is switched to a state in which the information code C is displayed in a readable manner as illustrated in FIG. 8.

  Further, in this configuration, the control circuit 11 that functions as a display control unit is configured to perform control to switch the display on the display unit 12 to a predetermined suppression state when a predetermined suppression condition is satisfied. Specifically, when a predetermined suppression condition is satisfied (for example, when a period of time during which no operation has been performed on the operation unit 13 has elapsed for a certain period of time), the backlight turn-off control of the display unit 12 or the display unit 12 is controlled. When it is configured to perform suppression control that suppresses light irradiation from the backlight more than in S2 (in a predetermined irradiation state), and when a predetermined suppression condition is satisfied during a period in which the processing of S2 is not performed In addition, power saving can be achieved. On the other hand, even in such a “predetermined suppression state”, the processing of FIG. 9 is performed in parallel, and therefore, in the “predetermined suppression state”, the direction of the display unit 12 is set to “predetermined direction”. When the process proceeds to Yes in S1, such a "predetermined suppression state" is canceled in S2, and the display unit 12 displays the information code C in a readable state. Keep the display. Specifically, the state in which the information code C is clearly displayed is maintained by irradiating light from the backlight of the display unit 12 in a predetermined irradiation state.

  In this configuration, when the above-described “predetermined suppression condition” is established between the time when the process proceeds to Yes in S1 and the time when the process proceeds to Yes in S3 (for example, a period during which no operation is performed on the operation unit 13 is constant). When the time has elapsed, the display unit 12 displays the information code C in a readable state without switching the display on the display unit 12 to the “predetermined suppression state” described above. The display is maintained in a readable state. That is, when the “predetermined suppression condition” is satisfied when the direction detection unit detects that the direction of the display unit 12 is “predetermined direction”, the information code is more effective than the backlight turn-off control or the suppression control. Priority is given to displaying C in a readable manner, and the display of the information code C is maintained while irradiating light from the backlight in a predetermined irradiation state.

(Example of effects of this configuration)
In this configuration, reading cannot be performed while the display unit 12 is held up toward the reading device 20 in a predetermined arrangement (an arrangement in which an image in the display unit 12 in a predetermined direction can be recognized). It is difficult to cause a situation in which only a simple image or an image that is difficult to read is continuously displayed. Accordingly, it is possible to make it difficult to cause problems such as reading delay and failure due to such a situation. For example, when the user performs a trick operation for setting the display unit 12 in a “predetermined orientation” to the reading device 20 in the “predetermined arrangement” described above, Since the information code C is displayed in a predetermined readable state and the state is maintained, the reader 20 recognizes the configuration of the information code C displayed on the displayed display unit 12 more accurately and more quickly. It becomes easy to do.

  The control circuit 11 corresponding to the display control unit is at least when the information code C is not displayed in a readable state on the display unit 12 (for example, when no information code is displayed, it is too dark or too small). When the direction detection unit detects that the display unit 12 is in a predetermined direction (for example, when a part of the display unit 12 cannot be read due to a part of the information code C), the information code C reads the display state of the display unit 12. It is configured to switch to a state that can be displayed. According to this configuration, even when the information code C is not displayed in the readable state on the display unit 12, the “information code C can be read in a readable state” by forcibly changing the display unit 12 to the “predetermined direction”. It can be switched to “displayed state”. Therefore, even if the display unit 12 is in a non-reading state (a screen in which the information code C does not exist or a screen in which the information code C cannot be read) immediately before reading, the screen is switched. Therefore, it is not necessary to force the user to perform complicated operations, and the burden on the user and delay until reading due to the complicated operations can be reduced more effectively.

  The control circuit 11 corresponding to the display control unit displays a predetermined default screen (FIG. 4) or an application program display screen (FIG. 5) that does not display the information code C on the display unit 12. When the direction detection unit detects that the direction of the display unit 12 is a predetermined direction, the display state of the display unit 12 is switched to a state in which the information code C is displayed in a readable state. According to the present invention, even if a display screen of an application program that does not display the default screen or the information code C is displayed on the display unit 12 immediately before reading, the display unit 12 is “predetermined”. The screen can be easily and quickly switched to a screen for reading the information code C (a screen displayed in a state where the information code C can be read) by an operation of changing to “direction”. For example, in a case where the time for displaying the default screen or the display screen of the application program that does not display the information code C is longer than the time for displaying the information code C, the above is used. It is particularly advantageous to use a configuration.

  The control circuit 11 corresponding to the display control unit is configured to perform control to switch the display on the display unit 12 to the “predetermined suppression state” when the “predetermined suppression condition” is satisfied. When the direction detection unit detects that the direction of the display unit 12 is a predetermined direction in the “state”, the “predetermined suppression state” is canceled and the information code C can be read on the display unit 12 While displaying in a state, the display is maintained. According to this configuration, when the “predetermined suppression condition” is satisfied, the display on the display unit 12 can be switched to the suppression state, which facilitates power saving. On the other hand, in such a power saving structure, there is a problem in that a reading operation is easily caused if a reading operation is performed in a suppressed state. In this configuration, the display unit 12 is set to “predetermined” in the suppressed state. When an operation of “direction” is performed, the suppression state can be stopped and the information code C can be displayed in a readable state. Therefore, reading due to the reading operation being performed in the suppression state. Defects are less likely to occur.

  Specifically, the “readable state” is a state in which light is emitted in a predetermined irradiation state from at least the backlight of the display unit 12. Then, the control circuit 11 corresponding to the display control unit performs the control of turning off the backlight of the display unit 12 or the light irradiation from the backlight of the display unit 12 when the “predetermined suppression condition” is satisfied. When the direction detection unit detects that the direction of the display unit 12 is “predetermined direction” in the “predetermined suppression state”, The “predetermined suppression state” is stopped, and the state in which the information code C is displayed is maintained while irradiating light in the predetermined irradiation state from the backlight of the display unit 12. According to this configuration, when the “predetermined suppression condition” is satisfied, the backlight can be turned off or the suppression control for suppressing the irradiation of light from the backlight can be performed. The power consumption can be effectively reduced. On the other hand, in such a power saving structure, there is a problem that the reading operation may be performed in a state where the backlight is turned off or irradiation with the backlight is suppressed, which may cause a reading failure. In the configuration, when an operation of turning the display unit 12 in a “predetermined direction” is performed while the backlight is turned off or suppressed, the backlight is returned to a predetermined irradiation state, and the information code C is clearly displayed. Therefore, it is difficult to cause a reading defect or the like due to a reading operation being performed while the backlight is turned off or suppressed.

Further, when a predetermined suppression condition is satisfied when the direction detection unit detects that the direction of the display unit 12 is the predetermined direction, the display on the display unit 12 is not switched to the predetermined suppression state. In addition, the display unit 12 is configured to display the information code C in a readable state while maintaining the display of the information code C in the readable state.
In the power saving structure as in this configuration, a tampering operation is performed to set the display unit 12 in a “predetermined orientation”, and after the information code C is displayed in a readable state, a “predetermined suppression condition” is satisfied. It can happen. In this case, the display may be suppressed before the reading by the reading device 20 is completed, and reading failure is likely to occur. On the other hand, in this configuration, when the “predetermined suppression condition” is satisfied when it is detected that the direction of the display unit 12 is “predetermined direction”, the display on the display unit 12 is changed to “predetermined Without switching to the “suppressed state”, the information code C can be displayed while being displayed in a readable state. That is, it becomes easy to prevent the display unit 12 from being forcibly switched to the “predetermined suppression state” during the above-described tanning operation (operation to turn the display unit 12 in a predetermined direction), and before reading is completed. It becomes easy to prevent problems such as reading failure due to the display being suppressed.

  More specifically, when the “predetermined suppression condition” is satisfied when it is detected that the direction of the display unit 12 is “predetermined direction”, the backlight extinction control and the suppression control are not performed. The information code C can be maintained while being displayed in a readable state. That is, it becomes easy to prevent the backlight from being forcibly switched to the extinguished state or the suppressed state during the above-described tanning operation (operation to turn the display unit 12 in a predetermined direction), and the backlight is completed before the reading is completed. It is easy to prevent reading failure due to the suppression of.

  In the present configuration, the three-axis sensor 15 and the control circuit 11 (direction detection unit) can detect a state in which the display unit 12 is directed vertically downward or obliquely downward. The control circuit 11 corresponding to the display control unit can read the information code C on the display unit 12 when the direction detection unit detects that the display unit 12 faces vertically downward or obliquely downward. The information code C is displayed in a readable state while being displayed. In this configuration, when it is desired to use the display unit 12 so as to be directed downward or diagonally downward (for example, an arrangement that can recognize the display of the display unit 12 when the display unit 12 is directed downward or diagonally downward). In the case where the reading device 20 is arranged). In particular, when the display unit 12 is used such that the display unit 12 is tilted downward or obliquely downward, since it is difficult for the user to view the display unit 12 when reading the display unit 12, a display timing is displayed when a reading delay or failure occurs. There is a problem that it is difficult to identify whether a delay or failure occurs due to a mismatch, or due to other factors, but according to this configuration, at least the delay or failure due to the display timing not matching is greatly reduced This makes it easier to deal with the above problems.

  Further, in this configuration, the control circuit 11 corresponding to the display control unit displays the display state on the display unit 12 when the direction detection unit detects that the display unit 12 is in a predetermined direction. The code C is fixed (maintained) for a certain period in a continuously displayed state. In this configuration, since the display of the information code C can be fixed (maintained) for a certain period of time when the display unit 12 is oriented in the “predetermined direction”, more stable code display is possible, and reading delays and failures are prevented. It can be further suppressed.

  Further, in this configuration, the control circuit 11 corresponding to the display control unit can read the information code C when the direction detection unit detects that the direction of the display unit 12 is “predetermined direction”. The display unit 12 is controlled so as to be displayed, and the state where the information code C is displayed in a readable state is maintained until a predetermined code display cancellation condition is satisfied. An operation control unit is provided that performs at least one of a predetermined return operation and a predetermined power saving operation after a predetermined code display cancellation condition is satisfied. According to this configuration, when the display unit 12 is read in the “predetermined direction”, the display of the information code C can be stabilized and easily read until the code display release condition is satisfied. Since the return operation or the power saving operation can be performed smoothly after the code display cancellation condition is satisfied, the problem that unnecessary code display continues excessively after reading is less likely to occur. For example, in the configuration in which the return operation is performed after the code display release condition is satisfied, it is easy to stop unnecessary code display and return to a predetermined return screen after the reading is completed. In the configuration in which the power saving operation is performed after the code display release condition is satisfied, unnecessary code display can be stopped and power consumption can be suppressed after the reading is completed.

  Further, in this configuration, when the display unit 12 is not in a “predetermined direction” such as downward or obliquely downward, the information code is not displayed on the display unit 12 in a readable state. For this reason, even if the display unit 12 is turned upward to illegally image the information code using a device different from the reading device 20, the information code is not displayed on the display unit 12. Imaging can be prevented.

[Second Embodiment]
The second embodiment is different from the first embodiment only in that the code display process of FIG. 9 is changed as shown in FIG. 10, and is otherwise the same as the first embodiment. In the process of FIG. 10, the processes of S21 to S23 are the same as the processes of S1 to S3 of FIG. 9, and thus detailed description of these processes is omitted.

  In the process of FIG. 10, the process of S24 is performed instead of the process of S4 of FIG. That is, after it is determined in S23 that the predetermined time has elapsed (that is, after the information code C is displayed in a readable state as shown in FIG. 8 for a predetermined time), in the process of S24, the screen is switched to the application program display screen. Processing is in progress. The display screen displayed in the process of S24 is, for example, the display screen of the application program displayed immediately before performing the process of S22 (that is, the display process of the information code C). As the application program, various known application programs used in smartphones, tablet terminals, and the like can be used. For example, a browser is started as an application program before the processing of S22, and a screen of a predetermined site on the Internet is displayed. If it is displayed on the display unit 12, if the information code is displayed in S22 and then the process proceeds to Yes in S23, then in S24, the screen before S22 is processed (that is, the predetermined site on the Internet). The return process may be performed so as to display the screen. Alternatively, before the processing of S22, one or a plurality of application programs for music reproduction, application programs for moving image reproduction, application programs for settlement, other application programs, and the like are started as application programs. In S22, after displaying the information code in S22 and proceeding to Yes in S23, in S24, the display screen of the application program (displayed immediately before the processing in S22). The return processing may be performed so that the application program screen) is displayed again. If the display screen of the application program is not displayed immediately before the processing of S22 and the default screen as shown in FIG. 4 is displayed, the display returns to the default screen as shown in FIG. 4 in S24. Also good.

[Third embodiment]
Next, a third embodiment will be described. The hardware configuration of the display device 10 according to the third embodiment is the same as that of the first embodiment. Therefore, detailed description of the hardware configuration is omitted. In the third embodiment, for example, display as shown in FIG. 11 can be performed by any application program existing in the display device 10.

  In this configuration, when the user performs a predetermined operation on the operation unit 13 and starts a predetermined application program, image display as shown in FIG. 11 is started. When this image display starts, a plurality of images are displayed in order on the display unit 12 as shown in the left diagram of FIG. For example, in the example of FIG. 11, the image P1 of the information code C, the image P2 including characters of the airline name, and the image P3 including characters of the flight name of the aircraft are alternately switched to the display unit 12. It is displayed. Specifically, when the display device 10 is not in the “predetermined direction”, the image P1, the image P3, and the image P2 are set to be switched at a constant time interval (for example, an interval of 0.2 seconds). ing. For example, after the image P1 of the information code C is displayed for a certain time (for example, 0.2 seconds), the image P1 of the information code C disappears, and the image P2 including characters of the airline name remains for a certain time (for example, 0 .2 seconds) is displayed. Then, after the image P2 is displayed for a certain time (for example, 0.2 seconds), the image P2 disappears, and the image P3 including the aircraft flight number characters is displayed for a certain time (for example, 0.2 seconds). The Then, after the image P3 is displayed for a certain time (for example, 0.2 seconds), the image P3 disappears and the image P1 is displayed again.

  As described above, after the image display is started, the above-described switching display (displays of the images P1, P2, and P3) continues. On the other hand, the display device 10 continuously detects the orientation of the display device 10 in parallel with the switching display, and the direction in which the display unit 12 faces is “predetermined”. Judging whether there is. This determination process is the same as the “determination process whether or not the orientation of the display unit 12 is“ predetermined direction ”” (that is, the determination process in S1) in the first embodiment. That is, even in this configuration, the display device 10 determines whether or not the three-axis sensor 15 detects a state in which the display unit 12 faces vertically downward or vertically downward.

  When it is detected that the direction of the display unit 12 is “predetermined direction” while the above-described switching display (display of each of the images P1, P2, and P3) is continued (that is, for a certain period of time). (If it is detected that the angle θ is not less than 0 ° and not more than the predetermined threshold value θα during the above), the display on the display unit 12 is displayed as an image of the information code C as shown in the right figure of FIG. The display is switched to P1 (FIG. 11 and the like), and the display is fixed (maintained) for a predetermined time while the image P1 of the information code C (QR code (registered trademark in the example of FIG. 11)) is displayed. As described above, in this configuration, after the application program (application program for performing switching display) is started, the display unit 12 faces vertically downward or diagonally downward by the user holding the display device 10 toward the reading device 20. In this case, the angle θ is not less than 0 ° and not more than the predetermined threshold value θα for a certain time or more, so the above-described switching display is interrupted and only the image P1 of the information code C is continuously displayed. is there. On the other hand, after the application program for performing the switching display is started, the direction of the display unit 12 does not become the “predetermined direction” (that is, “the angle θ is 0 ° or more and a predetermined threshold θα or less for a certain period of time or more”. The switching operation of each display of the images P1, P2, and P3 is continued while the condition “Yes” is not satisfied.

  As described above, in this configuration, the control circuit 11 corresponding to the display control unit shows the display state on the display unit 12 as the display state in which the information code C is readable and the configuration of the information code C. It is configured to be able to change to a state in which another different figure or other information is displayed. Specifically, a display switching operation for sequentially switching the display of the images P1, P2, and P3 is performed. In this way, the display unit 12 displays the “display state in which the information code C can be read” and the “state in which another diagram or other information different from the configuration of the information code C is displayed”. In other words, it is possible to realize a plurality of types of display modes that cannot be realized by a configuration in which only the information code C is continuously displayed.

  However, by simply switching between the display of the information code C and the display of another figure or other information, when the information code C is to be read, not the information code C but another figure or other information (for example, The image P2 and the image P3) may be displayed. In this case, there is a problem that the reading is delayed until the information code C is displayed again. On the other hand, in this configuration, the display of the image P1 is read when the decoy operation for reading the information code C is performed (that is, when the operation for setting the display unit 12 to “predetermined direction” is performed). Since the information code C is maintained (fixed) in a possible state and is maintained in a readable state, the information code C can be read more quickly and reliably. Therefore, the timing at which the display unit 12 is turned to “predetermined direction” and the timing at which the reading is actually performed are not greatly displaced, and a large time lag is unlikely to occur from when the display unit 12 is directed to the predetermined direction until the reading result is obtained. Therefore, it is possible to more effectively suppress a decrease in reading feeling.

  In the example of FIG. 11, the image of the QR code (registered trademark) linked to the boarding pass is illustrated as the image P1 of the information code C, and information (information on the boarding pass) recorded in the QR code is illustrated. As related images, an image P2 that identifies an airline of an aircraft that can be boarded with the boarding pass and an image P3 that identifies the flight number of an aircraft that can be boarded with the boarding pass are displayed in a switched manner. ing. By doing in this way, in normal times (when the display unit 12 is not facing the reference direction), it is possible to visually check what kind of information code C the other images P2 and P3 have. The information code C can be read properly.

[Modification Example of Third Embodiment]
Next, a modified example of the third embodiment will be described. The modified example of the third embodiment is different from the representative example of the third embodiment described above only in the specific example of the display processing, and is otherwise the same as the representative example of the third embodiment. Specifically, in the switching display process in the representative example, the images P1, P2, and P3 are sequentially switched and displayed as shown in FIG. 11, but in the modified example, the image P2 or The image P3 or both of them are displayed, and control is performed so that the image P1 is not displayed. There are various display methods of the images P2 and P3 at this time. For example, only the image P2 may be continuously displayed until it is detected that the direction of the display unit 12 is “predetermined direction”. Only the image P3 may be continuously displayed until it is detected that the direction of the display unit 12 is “predetermined direction” (the right side of the lower diagram in FIG. 12 shows this example). Alternatively, the images P2 and P3 may be switched and displayed at regular intervals until it is detected that the direction of the display unit 12 is “predetermined direction”. In this way, while the display unit 12 is not in the “predetermined orientation”, an image other than the information code C can be displayed. When 12 is upward and easy to see), it is possible to make the user more easily recognize figures and information other than the information code.

  In this configuration, while the image other than the information code C is being displayed, the direction of the display unit 12 is “predetermined” in the same manner as in S1 (FIG. 9) of the first embodiment. If the orientation of the display unit 12 is “predetermined orientation”, the information code C is displayed in a readable state on the display unit 12 as shown on the left side of the lower diagram of FIG. Therefore, it becomes easy to read with the reading device 20 or the like.

[Fourth embodiment]
Next, a fourth embodiment will be described. The hardware configuration of the display device 10 according to the fourth embodiment is the same as that of the first embodiment. Therefore, detailed description of the hardware configuration is omitted.

  In the third embodiment, in the configuration of the portable information code display device 10, the configuration in which the information code C is displayed on the display unit 12 as a part of the still image to be switched is illustrated. However, in this configuration, the information code C is displayed as a moving image. It is displayed as a part, and the flow of this moving image is illustrated in FIGS. In this example, the screen changes in the order of FIGS. 13 (A), (B), (C), (D), (E), and (F), and the symbols in the code area of the information code C Is displayed so as to gradually change. Specifically, a moving image is displayed so that the ball that has entered from the left side of the code area moves as shown in images P22 and P23 of FIGS. 13B and 13C as shown in image P21 of FIG. 13A. As shown in images P24, P25, and P26 in FIGS. 13D to 13F, a moving image is displayed so as to stop in a vertically long state. Further, the light cell and dark cell in the code area are configured so that the density of the light cell gradually changes except in the vicinity of the three position detection patterns. In the image P21 in FIG. The position of the color cell is represented in black, and the density at that position is gradually reduced so that a light color cell appears as in the image P22 in FIG. 13B. Further, as shown in the image P23 in FIG. 13C, the density of the light cell gradually increases, and then the moving image so that the position of the light cell is expressed in black as in the image P24 in FIG. 13D. Display is made. Thereafter, the density of the light cell gradually decreases, and the light cell emerges as shown in the image P25 of FIG. 13E. Thereafter, the density of the light cell gradually decreases further, and FIG. As shown in the image P26, the light color cell changes so as to be expressed in white.

  Since the moving image is displayed in this manner, the information code C can be read while the direction of the display unit 12 is not detected as “predetermined direction” (FIGS. 13B and 13C). E) and (F)) and a state where the reading is impossible (the states shown in FIGS. 13A and 13D). In the states of FIGS. 13B, 13C, 13E, and 13F, the position of the rugby ball can be corrected by a known error correction method. The data recorded in the area can be decoded without any trouble.

  While such moving image display is being performed, a determination process is performed to determine whether or not the orientation of the display unit 12 is the “predetermined orientation” in the same manner as in S2 of the first embodiment. When it is determined that the display unit 12 is in the “predetermined direction”, the information code C is displayed on the display unit 12 so that it can be read by the reading device 20. The display at this time is, for example, a continuous image of only the information code C obtained by extracting only the information code C displayed superimposed on the ball as shown in FIGS. 13B, 13C, 13E, and 13F. The image may be fixed (maintained) as a still image, and one of the images shown in FIGS. 13B, 13C, 13E, and 13F (an image in which data can be decoded by correcting the ball portion by error correction). May be continuously fixed (maintained) as a still image. In this way, if an image of only the information code C or an image of the information code C in which a part of the code area is represented in a form that can be corrected by a picture or a symbol is displayed for a certain period of time, In addition, when the display unit 12 of such a display screen is turned toward the reading device 20, the reading device 20 can reliably read the information code C.

  As described above, in this configuration, the control circuit 11 corresponding to the display control unit displays the display state on the display unit 12 as “a display state in which the information code C is readable” and “a code of the information code C”. The display state can be changed to a “display state in which the area cannot be read”. With the configuration that can be changed in this way, dynamic display with high design characteristics rich in changes that cannot be realized with a configuration in which only the information code C is continuously displayed is possible.

  However, when the information code C is to be read simply by performing dynamic display, the code area cannot be read (for example, a state as shown in FIGS. 13A and 13D). ), And in this case, reading is delayed until it is displayed again in a readable state. On the other hand, in the present configuration, when a fringing operation for reading the information code C is performed (that is, when an operation for setting the display unit 12 to “predetermined direction” is performed), a still image ( The still image displayed with the information code C readable is maintained, and the still image displayed with the information code C readable is maintained, so that the information code C can be read more quickly and reliably. It becomes possible. Therefore, the timing when the display unit 12 is placed in the “predetermined orientation” and the timing when the reading is actually performed are not greatly displaced, and a large time lag is unlikely to occur from when the display unit 12 is oriented in the predetermined direction until a reading result is obtained. Therefore, it is possible to more effectively suppress a decrease in reading feeling.

[Fifth Embodiment]
The fifth embodiment is different from the first embodiment only in that the code display process of FIG. 9 is changed as shown in FIG. 14, and is otherwise the same as the first embodiment. In the process of FIG. 14, the processes of S52 to S54 are the same as the processes of S2 to S4 of FIG. 9, and detailed description of these processes is omitted.

  Even in this configuration, after starting the processing of FIG. 14, the accelerations αx, αy, and αz in the X, Y, and Z axis directions are continuously detected by the triaxial sensor 15 as shown in FIG. The direction of the acceleration αs applied to the display device 10 can be continuously specified by combining αx, αy, and αz. Even in this configuration, in the process of S51 performed every predetermined short time, the angle θ formed by the combined acceleration αs and the positive Z-axis at the time of the process of S51 is obtained, and the angle θ is determined for a certain period of time. It is determined whether or not it is 0 ° or more and a predetermined threshold value θα or less for a period of time (for example, 0.1 seconds or 0.01 seconds). However, this θα is set to 90 °, for example, and when the angle θ becomes 90 ° or less for a certain time, the process proceeds to Yes in S51. In other words, in this configuration, for example, the direction of the display unit 12 (for example, a direction within 10 °) in which the angle between the vertical downward direction and the vertical downward direction is within a certain angle is a “predetermined direction”, and the angle A state in which the state where θ is 90 ° or less continues for a certain time corresponds to “a predetermined change state in which the change in the direction of the display unit 12 (display unit) detected by the direction detection unit approaches a“ predetermined direction ””. To do.

  As described above, in this configuration, the control circuit 11 corresponding to the display control unit is in the “predetermined change state” in which the change in the direction of the display unit 12 detected by the direction detection unit approaches the “predetermined direction”. When the information code C is recognized, the display unit 12 displays the information code C in a readable state, while maintaining the display of the information code C in a readable state. In this configuration, before the display unit 12 is completely turned to the “predetermined direction”, a change approaching the “predetermined direction” is prefetched, and the display of the information code C is shifted to a readable state early and stabilized. Can be made. That is, it is possible to move to preparation for reading the information code C before the display unit 12 is completely in the “predetermined direction”, and it becomes easier to complete the reading of the information code C earlier.

[Modification Example of Fifth Embodiment]
For example, all the configurations of the representative example of the fifth embodiment may be included, and a condition that allows the process to proceed to Yes may be added in the determination process of S51 in FIG. Specifically, for example, in addition to the condition for proceeding to Yes in S51 of the fifth embodiment, the process may proceed to Yes in S51 when “the amount of decrease Δθ in angle θ in a predetermined short time is equal to or greater than a certain value”. Good.

  When the display unit 12 is stationary in a state of being completely vertically downward, the angle θ (the angle formed by the acceleration αs and the positive direction of the Z axis) is 0, so the angle θ decreases rapidly and approaches 0. If it is, there is a high possibility that an operation to turn the display unit 12 downward is performed. Therefore, after the processing of FIG. 14 is started, the decrease amount Δθ of the angle θ is obtained every predetermined short time (for example, every few ms or every several tens of ms), and the decrease amount Δθ is equal to or greater than a certain value (for example, 40 ° or more) In this case, the process proceeds to Yes in S51. Even in such a configuration, before the display unit 12 (display unit) is completely turned to the “predetermined direction”, the state of changing to the “predetermined direction” can be pre-read and the display of the information code C can be read early. The display state can be shifted and stabilized. Therefore, it is possible to prepare for reading the information code C before the display unit 12 (display unit) is completely in the “predetermined direction” and complete the reading of the information code earlier. In this configuration as well, as in the first embodiment, “the direction of the display unit 12 when the angle θ is 0 ° or more and the threshold θα or less” is the “predetermined direction”.

  Here, in the determination process of S51 in FIG. 14, a condition that can proceed to Yes is added, but instead of the determination process of S51 in the representative example of the fifth embodiment, the above-described determination process (in a predetermined short time). If the reduction amount Δθ of the angle θ is equal to or greater than a certain value, the process may proceed to Yes in S51, and if not, the determination process may proceed to No).

[Sixth Embodiment]
The sixth embodiment is different from the first embodiment only in that the code display process of FIG. 9 is changed as shown in FIG. 15, and is otherwise the same as the first embodiment. In the process of FIG. 15, the processes of S60 and 62 to S64 are the same as the processes of S1 to S4 of FIG. 9, and thus detailed description of these processes is omitted.

  In this example, the process proceeds to Yes after performing the same determination process in S60 of FIG. 9 in S60 of FIG. 15 (that is, when it is detected that the direction of the display unit 12 is “predetermined direction”). In addition, the determination process of S61 is performed. In the process of S61, whether or not the display device 10 is in the “predetermined moving state” (specifically, for example, any acceleration change in the X-axis direction, the Y-axis direction, or the Z-axis direction has a constant value). Or not). If it is determined in S61 that the acceleration change in any of the X-axis direction, the Y-axis direction, and the Z-axis direction exceeds a certain value, the process proceeds to Yes in S61. Control to display C in a readable state is not performed. On the other hand, when the process proceeds to Yes in S60 (when it is detected that the direction of the display unit 12 is “predetermined direction”), the display device 10 is not in the “predetermined moving state” (for example, the X-axis direction). In the case where any acceleration change in the Y-axis direction and the Z-axis direction does not exceed a certain value), the process proceeds to No in S61, and the processes after S62 are performed.

  In this configuration, the control circuit 11 corresponding to the display control unit determines that the direction of the display unit 12 is determined by the direction detection unit when the predetermined permission condition for permitting the display of the information code C is satisfied. When the orientation is detected, the display unit 12 displays the information code C in a readable state, while maintaining the display of the information code C in a readable state. Specifically, even when “the direction detecting unit detects that the direction of the display unit 12 is the predetermined direction”, when the display device 10 is “the predetermined moving state”, the information code C The information code C is displayed in a readable state only when the display device 10 is not in the “predetermined movement state”.

  When the information code C displayed on the display unit 12 is read, there is a high possibility that the display device 10 is in a stationary state or a state close thereto, and conversely, when the display device 10 is in a moving state, the display unit 12 is “predetermined. Even if it is in the “direction”, there is a high possibility that reading is not being performed. Therefore, if the control for displaying the information code C in a readable state is not performed when the display device 10 is in the “predetermined moving state”, the information code C is displayed in a readable state at an unnecessary time. This makes it easier to reduce waste.

  Here, as an example of the “predetermined permission condition”, “the display device 10 is not in a predetermined movement state” is illustrated, but the present invention is not limited to this example. For example, the “predetermined permission condition” may be that the display device 10 is set to permit automatic display of the information code C. Alternatively, the presence of an information code to be displayed on the display device 10 may be set as a “predetermined permission condition”.

[Seventh Embodiment]
The seventh embodiment includes all the features of the first embodiment, and differs only in the way of displaying the information code C. Therefore, in the following, detailed description of the same contents as in the first embodiment will be omitted, and points added to the configuration of the first embodiment will be mainly described. The idea of the seventh embodiment can be applied to any other embodiment.

  In the seventh embodiment, the control circuit 11 corresponding to the display control unit displays the reference direction as a reference of “predetermined orientation” when displaying the information code C in a readable state in the process of S2 of FIG. An image corrected based on an angle γ formed with the direction in which the display unit 12 faces (Z-axis direction shown in FIG. 6) is displayed. Here, the reference direction serving as a reference for the “predetermined direction” is the “vertical direction”, and the angle γ between the reference direction and the direction in which the display unit 12 faces (Z-axis direction shown in FIG. 6) is The angle γ1 formed by the horizontal plane F indicated by 16 and the display surface 12 ′ of the display unit 12 is the same as the absolute value.

  As shown in FIG. 16, when the display surface 12 ′ of the display unit 12 is inclined with respect to the horizontal plane F, in the captured image of the reading device 20 as shown in FIG. Becomes trapezoidal, and the larger the angle γ1, the smaller the length of the upper side relative to the length of the lower side. When the lower portion of the display unit 12 is tilted closer to the reading device 20 than the upper portion, the angle γ1 has a negative value. In this case, the lower the side, the larger the angle γ1 (that is, the closer the angle γ1 is to 0). The length of the upper side with respect to the length of becomes smaller.

  In the case where there is an inclination, the code image C ′ is trapezoidal in this way, and therefore, in this configuration, the information code C is displayed in a corrected form. Specifically, the enlargement amount E of the upper side shown in FIG. 17B is determined according to the angle γ1, and when the angle γ1 is negative, the enlargement amount E is a negative value (that is, reduction). Value). As a method of determining the enlargement amount E as the angle γ1 increases, the value of the enlargement amount E corresponding to the value of the angle γ1 may be determined in advance and stored in the apparatus as table data. Alternatively, an arithmetic expression for increasing the enlargement amount E as the angle γ1 increases may be used.

  Thus, when the angle γ1 is found, the enlargement amount E on the upper side is determined, and the enlargement amount for each distance from the lower side can be determined based on the enlargement amount E. . For example, when the enlargement amount at the position d is e, the enlargement amount is determined by the equation e = (E × d) / D. If the angle γ1 is positive, the distance from the lower side increases. A trapezoidal code image whose upper side is enlarged so that the enlargement amount e increases as the position (closer to the upper side) is generated, and this code image is displayed in the process of S2 of FIG. If the angle γ1 is negative, a trapezoidal code image is generated by reducing the upper side so that the amount of reduction e increases as the distance from the lower side increases (closer to the upper side). Is displayed in the process of S2 of FIG.

  When the information code C is displayed in a readable state as in this configuration, the information code C is displayed in a state corrected based on the angle formed by the reference direction and the direction in which the display unit 12 faces (specifically, tilt If the display device 10 displays a code image corrected to a trapezoidal shape in accordance with γ1), the reading device 20 recognizes the code image in a more square or rectangular shape, and the information code C with respect to the reference direction is recognized. It becomes easy to read in an image state matched to the inclination.

[Eighth Embodiment]
The eighth embodiment is different from the first embodiment in that the code display process of FIG. 9 is changed as shown in FIG. 18, and is otherwise the same as the first embodiment. In particular, the present embodiment is configured to display any one of a plurality of types of information codes as a selected information code C on the display unit 12 in a readable state, and the plurality of types of information codes are stored in the memory. It is stored in advance in the memory 14 that functions as a unit. Then, one of a plurality of types of information codes stored in the memory 14 is selected and displayed in response to communication with the external device 50 (see FIG. 19) via the communication unit 16. That is, in the present embodiment, an appropriate information code is automatically selected and displayed on the display unit 12 according to information received from the external device 50 by the display device 10.

  The external device 50 is configured to wirelessly transmit information related to an environment such as a store where the reading device 20 is disposed. For this reason, for example, when the display device 10 receives information related to the store A from the external device 50 arranged in the store A, the display device 10 should display the information in the store A among a plurality of types of information codes. Select an information code. For example, when the display device 10 receives information related to the store B from the external device 50 arranged in the store B, the information to be displayed at the store B among a plurality of types of information codes. Select a code. It is assumed that information indicating the relationship between the information received from the external device 50 and the information code to be displayed is stored in the memory 14 in advance. In addition, the display device 10 may be configured to be able to directly communicate with the external device 50 wirelessly, or may be configured to be able to wirelessly communicate with the external device 50 via an access point or the like.

  Hereinafter, the code display processing according to the present embodiment will be described with reference to the flowchart of FIG. In the process of FIG. 18, the processes of S70, S74, and S75 are the same as the processes of S1, S3, and S4 of FIG. 9, and thus detailed description of these processes is omitted.

  In S70 of FIG. 18, after performing the same determination processing as S1 of FIG. 9, when the process proceeds to Yes (that is, when it is detected that the direction of the display unit 12 is “predetermined direction”), the external device It is determined whether information from 50 is received via the communication unit 16 (S71).

  And when the information from the external device 50 is received via the communication part 16, it progresses to Yes in S71 and multiple types of information memorize | stored in the memory 14 according to the information received in S71 One of the codes is selected (S72). When the information code to be displayed is selected in this way, in S73, the display on the display unit 12 is switched to the image of the selected information code C, and the display can be read with the image of the information code C displayed. To maintain (fix).

  For example, when an information code is given to the reading device 20 arranged in the store A, when information is received from the external device 50 arranged in the store A, information to be displayed in the store A according to the information Switch to the code image, and maintain (fix) the display in a readable state while displaying the information code image.

  On the other hand, if the information has not been received from the external device 50 after proceeding to Yes in S70, the process proceeds to No in S71 and determines whether or not the display of the default information code is set (S76). ). When the display of the default information code is set in advance, the process proceeds to Yes in S76, the display on the display unit 12 is switched to the image of the default information code set in advance, and the image of the information code is displayed. In this state, the display is made readable and maintained (fixed) (S77). The default information code is stored in advance in the memory 14 together with the above-described plural types of information codes. On the other hand, if the display of the default information code is not set, the process proceeds to No in S76, and the code display process is terminated without displaying the information code in a readable state on the display unit 12.

  As described above, this configuration is configured to include the memory (storage unit) 14 that stores a plurality of types of information codes that can be displayed on the display unit 12 and the communication unit 16 that can communicate with the external device 50. Yes. The control circuit 11 corresponding to the display control unit displays a plurality of types of information stored in the memory 14 in response to communication with the external device 50 via the communication unit 16 when displaying the information code in a readable state. One of the codes is selected and displayed.

  In this configuration, one of a plurality of types of information codes is selected and displayed according to communication with the external device 50 via the communication unit 16, so even if there are a plurality of types of information codes that can be displayed, the display is possible. The information code to be selected can be automatically selected. Therefore, by changing the information received from the external device 50 by the display device 10 according to the environment in which the reading device 20 is arranged, an appropriate information code is automatically selected from a plurality of types of information codes. Can be displayed.

[Ninth Embodiment]
The ninth embodiment is different from the first embodiment in that the code display process of FIG. 9 is changed as shown in FIG. 20, and is otherwise the same as the first embodiment. In particular, in the present embodiment, as in the eighth embodiment, a plurality of types of information codes are stored in advance in the memory 14 that functions as a storage unit. Then, one of a plurality of types of information codes stored in the memory 14 is selected and displayed according to the detected direction of the display unit 12. That is, in the present embodiment, an appropriate information code is automatically selected and displayed on the display unit 12 in accordance with the position change (inclination change) of the reader 10 that has been manipulated.

  In the present embodiment, as in the first embodiment, the angle θ formed by the combined acceleration αs and the positive Z-axis direction is “a value indicating the direction in which the display unit 12 faces”, and “the angle θ is 0 ° or more. The “direction in which the display unit 12 faces when the threshold value θα is equal to or smaller than the threshold θα” is the “predetermined direction”. In particular, in the present embodiment, a threshold value θm that is greater than 0 ° and less than the threshold value θα is set in advance, and the “direction in which the display unit 12 faces when the angle θ is greater than or equal to 0 ° and less than the threshold value θm” is “the first direction D1. When the first direction D1 is detected, the information code C1 corresponding to the first direction D1 is selected from the plurality of types of information codes and displayed. Further, “the direction in which the display unit 12 faces when the angle θ is equal to or larger than θm and equal to or smaller than the threshold θα” is set as “second direction D2”, and when the second direction D2 is detected, the information code is selected from the plurality of types of information codes. The information code C2 corresponding to the second direction D2 is selected and displayed. For this reason, in this embodiment, two information codes of the information code C1 and the information code C2 are stored in advance in the memory 14 as a plurality of types of information codes, and when the first direction D1 is detected, FIG. The information code C1 is displayed on the display unit 12 as illustrated, and when the second direction D2 is detected, the information code C2 is displayed on the display unit 12 as illustrated in FIG. Note that the angle θ formed by the combined acceleration αs and the positive Z-axis direction is set as the inclination angle of the reading device 10 with respect to the horizontal plane, and as illustrated in FIG. 22, the angle θ, the first direction D1, and the second direction The relationship with the direction D2 can be illustrated. In FIG. 22, the change in position (inclination change) of the reading apparatus 10 in which the first direction D1 is detected is illustrated by a solid line, and the change in position (inclination change) in the reading apparatus 10 in which the second direction D2 is detected. ) Is illustrated by a two-dot chain line.

  Hereinafter, the code display processing according to the present embodiment will be described with reference to the flowchart of FIG. In the process of FIG. 20, the processes of S80, S83, and S84 are the same as the processes of S1, S3, and S4 of FIG. 9, and thus detailed description of these processes is omitted.

  In S80 of FIG. 20, after performing the same determination processing as S1 of FIG. 9, this detection is performed when the process proceeds to Yes (that is, when it is detected that the direction of the display unit 12 is “predetermined direction”). One of the plurality of types of information codes stored in the memory 14 is selected according to the direction in which the display unit 12 is directed (S81). When the information code to be displayed is selected in this way, in S82, the display on the display unit 12 is switched to the image of the selected information code C, and the display can be read with the image of the information code C displayed. To maintain (fix). For example, when the first direction D1 is detected, the image is switched to an image of the information code C1 corresponding to the direction, and the display is maintained in a readable state while the image of the information code C1 is displayed (fixed) (FIG. 21). (See (A)).

  As described above, this configuration is configured to include the memory (storage unit) 14 in which a plurality of types of information codes that can be displayed on the display unit 12 are stored. Then, when displaying the information code in a readable state, the control circuit 11 corresponding to the display control unit has a plurality of types stored in the memory 14 according to the direction in which the display unit 12 detected by the direction detection unit faces. One of the information codes is selected and displayed.

  In this configuration, since one of a plurality of types of information codes is selected and displayed according to the direction in which the display unit 12 detected by the direction detection unit faces, even if there are a plurality of types of information codes that can be displayed, An information code to be displayed can be automatically selected. Therefore, the user operates the display device 10 with respect to the reading device 20 so that the display unit 12 corresponding to the information code to be displayed faces in the desired direction. The code can be automatically selected and displayed.

  In the present embodiment, the predetermined direction is not limited to the first direction D1 and the second direction D2, but is divided according to the number of types of information codes stored in the memory 14. Also good. For example, when the number of types of information codes stored in the memory 14 is three, a desired information code is automatically selected from the three types of information codes by dividing the predetermined direction into three directions. Can be selected and displayed.

[Tenth embodiment]
The tenth embodiment is different from the first embodiment in that the code display process of FIG. 9 is changed as shown in FIG. 23, and is otherwise the same as the first embodiment. In particular, in the present embodiment, an operation (hereinafter also referred to as a permission operation) that is performed on the operation unit 13 when allowing the information code to be displayed on the display unit 12 in a readable state is set. For this reason, even if it is detected that the orientation of the display unit 12 is a predetermined orientation, the information code is displayed in a readable state unless the user intentionally performs the permission operation on the operation unit 13. It never happens. Here, the permission operation may be set, for example, as operating a predetermined switch among a plurality of switches constituting the operation unit 13, or may be set as operating a plurality of predetermined switches at the same time. May be. In addition, when a part of the operation unit 13 is configured by a touch panel, the permission operation may be set as a touch operation on a predetermined position on the touch panel screen.

  Hereinafter, the code display processing according to the present embodiment will be described with reference to the flowchart of FIG. In the process of FIG. 23, the processes of S90 and 92 to S94 are the same as the processes of S1 to S4 of FIG. 9, respectively, and thus detailed description of these processes is omitted.

  In S90 of FIG. 23, after performing the same determination process as S1 of FIG. 9, when proceeding to Yes (that is, when it is detected that the direction of the display unit 12 is “predetermined direction”), the process of S91 Judgment processing is performed. In the processing of S91, it is determined whether or not the permission operation is performed on the operation unit 13. If it is not determined in S91 that the permission operation has been performed on the operation unit 13, the process proceeds to No in S91, and during this period, control is performed to display the information code C in a readable state. I am trying not to. That is, during this period, the information code is prohibited from being displayed on the display unit 12 in a readable state. On the other hand, when the process proceeds to Yes in S90 (when it is detected that the direction of the display unit 12 is “predetermined direction”), when it is determined that the permission operation is performed on the operation unit 13. In S91, the process proceeds to Yes, and the processes after S92 are performed. In particular, in the present embodiment, the process in S92 is to maintain (fix) the display in a readable state in a state where the image of the information code selected by the permission operation is displayed, and only one information code to be displayed is displayed. If not, the information code is the information code selected by the permission operation.

  As described above, this configuration is configured to include the operation unit 13 that is permitted to perform the display when the information code display is permitted. Then, the control circuit 11 corresponding to the display control unit prohibits the display of the information code when the operation unit 13 is not permitted to perform the operation, and the operation unit 13 is permitted to perform the operation and the direction detection unit performs the operation. When it is detected that the direction of the display unit 12 is a predetermined direction, the display unit 12 displays at least the information code in a predetermined readable state and maintains the display of the information code in the readable state. It is the composition to do.

  In this configuration, even when the direction detection unit detects that the display unit 12 is in a predetermined direction, the information code can be read unless the user intentionally operates the operation unit 13. It is not displayed in the state. As a result, display of an unintended information code is prevented, and security related to display of the information code can be improved.

  Note that on the assumption that the process proceeds to Yes in S90, not only one type of information code is displayed according to the permission operation, but also a plurality of types of information are set according to the permission operation. One of the codes may be selected and displayed. For example, on the assumption that the process proceeds to Yes in S90, the information code C1 is displayed in a readable state in the permission operation for operating the button A of the operation unit 13, and the information code C2 is displayed in the permission operation for operating the button B of the operation unit 13. Can be displayed in a readable state. Furthermore, on the premise that the process proceeds to Yes in S90, another information code different from the information codes C1 and C2 can be displayed in a readable state in the permission operation in which the button A and the button B are simultaneously operated.

[Other Embodiments]
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  In the third embodiment, an example of switching and displaying the image P1 of the information code C and another figure or other information image (images P2 and P3) related to the information code C has been shown. However, the present invention is not limited to this example. Is not to be done. For example, if the information code C records the name of a product, the name of a product provider (product provider, etc.), or the address of a site operated by the product provider, an image of the information code C and the information code Information and graphics of products specified by the data recorded in C (images of the products themselves, product name information of the products, trademarks of the products, etc.) may be switched and displayed. Alternatively, the entity (company or individual) identified by the data recorded in the information code C, and information or figure identifying the entity (image of the entity itself, entity name information of the entity (company name or individual) Name) and the trademark of the subject) may be switched and displayed.

  In the above embodiment, in the display processing such as S2, S22, S52, S62, S73, S82, S92, etc., the display state on the display unit 12 can be read by the reading device 20 with the information code C of a certain size. The configuration of performing the process of maintaining (fixing) the image in the readable state in the state continuously displayed in FIG. However, in the display processing such as S2, S22, S52, S62, S73, S82, and S92, the display state on the display unit 12 is displayed continuously or intermittently in a configuration in which the information code C can be read by the reading device 20. Other display processing may be performed as long as the configuration is set to be performed. For example, after the display is started in S2, S22, S52, S62, S73, S82, and S92, it can be read by the reading device 20 until the process proceeds to Yes in S3, S23, S53, S63, S74, S83, and S93. In such a state, display may be performed such that the information code in the display state in which the dark cell density is high and the information code in the state in which the dark cell density is lighter are switched at regular intervals. Or the structure displayed intermittently so that the information code C may blink may be sufficient. In this case, it is desirable that the period during which the information code C disappears during the blinking display is very short. Alternatively, the information code C may be displayed continuously or intermittently while being changed to a plurality of sizes in a state where the information can be read by the reading device 20.

  In the first embodiment, in the flowchart shown in FIG. 9, after the information code C is displayed in a configuration that can be read by the reading device 20 (that is, after displaying S2), a predetermined time is displayed in S3. Although it has been determined whether or not it has passed, other determination processing may be performed instead of the determination processing in S3. For example, when a state in which the display unit 12 faces in a predetermined direction (for example, vertically downward or vertically diagonally downward) is detected in S1 and the process proceeds to Yes in S1, the display unit 12 displays a direction other than the “predetermined direction”. If it is detected that the camera has turned, the process may proceed to Yes in S3. In this case, after proceeding to Yes in S1, the process of S3 is periodically performed every predetermined short time, and if the display unit 12 remains in the “predetermined direction”, the process proceeds to No. 12 is in a state other than “predetermined direction” (for example, when it is detected that the angle θ exceeds the threshold θα for a predetermined time (for example, 1 second) or more), in S3 Proceed to Yes. In this example, detection of a state in which the display unit 12 faces in a direction other than “predetermined direction” corresponds to “establishment of a predetermined code display release condition”. Further, “establishment of a predetermined code display cancellation condition” is not limited to these examples, and may be “a predetermined operation has been performed on the operation unit 13”, for example. In this case, instead of the determination process of S3, a “process for determining whether or not a predetermined operation has been performed on the operation unit 13” may be performed. When a predetermined operation is performed on the operation unit 13 In S3, the process proceeds to Yes. Otherwise, the process proceeds to No. This idea can be applied to other embodiments as well.

  In the above embodiment, the case where the angle θ between the direction of the resultant acceleration αs and the positive Z-axis direction is not less than 0 ° and not more than the predetermined threshold value θα is described as “the display portion is directed vertically downward or vertically obliquely downward. However, the present invention is not limited to this example. For example, in any embodiment, in the state where the angle θ between the direction of the combined acceleration αs and the positive Z-axis direction is 0 ° or more and a predetermined threshold θα or less, the acceleration αx, αy, αz in each axis direction When a stationary state in which the amount of change Δαx, Δαy, Δαz is less than a predetermined value Δα is detected for a certain period of time (for example, 1 second or 0.1 second), It may be detected as “a state facing downward”. In this case, “the angle θ is not less than 0 ° and not more than the threshold θα, and the change amounts Δαx, Δαy, Δαz of the accelerations αx, αy, αz in the respective axial directions are less than the predetermined value Δα for a certain period of time. “When a stationary state is detected” is “when the direction of the display unit 12 detected by the direction detection unit becomes a predetermined direction”. In addition, “when the angle θ is 0 ° or more and the threshold θα or less, the change amounts Δαx, Δαy, Δαz of the accelerations αx, αy, αz in each axial direction are less than the predetermined value Δα for a certain period of time. The “direction in which the display unit 12 faces when a still state is detected” is the “predetermined direction”.

  In the said embodiment, although the example which detects the direction of the display part 12 (display part) by the triaxial sensor 15 was shown, it is not restricted to this example. For example, as shown in FIG. 1, when the reading device 20 that emits illumination light upward is made to read the information code C displayed on the display unit 12 by turning the display unit 12 downward, A light amount sensor may be arranged, and when the light amount detected by the light amount sensor becomes a certain value or more, the process may proceed to Yes in S1, S21, S60, S70, S80, and S90. In this case, while the light amount detected by the light amount sensor is less than a certain value, the process continues to No in S1, S21, S51, S60, S70, S80, S90, and the like. In this case, “the direction in which the light amount detected by the light amount sensor is equal to or greater than a certain value” corresponds to “the predetermined direction”.

  In the above embodiment, the method of detecting the direction of the vertical direction with the display device 10 as a reference is exemplified by the acceleration sensor. However, in any of the embodiments, various known methods can be used as long as the vertical direction can be detected. Can be used. For example, a method of specifying a vertical direction using an acceleration sensor and a geomagnetic sensor, or a method of specifying a vertical direction using an acceleration sensor and a gyro sensor may be used. In any method, if the vertical direction can be specified, the angle θ between the vertical direction and the positive Z-axis direction can be specified.

  In the above-described embodiment, the reading device 20 is arranged at a position lower than the operation position by the user, and the reading device 20 reads the information code that has been placed upward. However, the present invention is not limited to this example. For example, when the reading device 20 is attached to a wall or the like and the visual field range of the light receiving sensor 23 is set in the horizontal direction (horizontal direction), the Z axis is used in S1, S21, S51, S60, S70, S80, S90, etc. It is determined whether or not the angle β formed by the positive direction and the horizontal direction (a plane direction orthogonal to the vertical direction) is not less than 0 ° and not more than a threshold value β1 (for example, 20 °). In S21, S51, S60, S70, S80, S90, etc., the process may proceed to Yes, and if not applicable, the process may proceed to No. In this case, the orientation of the display unit 12 when the angle β formed between the positive Z-axis direction and the horizontal direction (a plane direction orthogonal to the vertical direction) is 0 ° or more and a threshold value β1 (for example, 20 °) or less is “predetermined. Corresponds to “direction”.

DESCRIPTION OF SYMBOLS 10 ... Portable information code display apparatus 11 ... Control circuit (a display control part, a direction detection part, an operation control part)
12 ... Display unit 13 ... Operation unit 14 ... Memory (storage unit)
15 ... Triaxial sensor (Direction detector)
16 ... Communication unit 20 ... Information code reading device 50 ... External device C ... Information code

Claims (13)

A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
With
The display control unit
The direction detection unit displays the display at least when a predetermined default screen in which the information code is not displayed in a predetermined readable state on the display unit or a display screen of an application program that does not display the information code is displayed. A portable information code that switches the display state of the display unit to a state in which the information code is displayed in the readable state when it is detected that the direction of the unit is the predetermined direction Display device. A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
With
The display control unit
When the direction detecting unit detects that the direction of the display unit is the predetermined direction, the display unit displays at least the information code in a predetermined readable state while the reading of the information code is performed. The display in the possible state is maintained until a predetermined code display cancellation condition is satisfied,
The portable information code display device further includes an operation control unit that performs at least one of a predetermined return operation and a predetermined power saving operation after the predetermined code display cancellation condition is satisfied. A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
With
The display control unit
When the direction detecting unit detects that the direction of the display unit is the predetermined direction, the display unit displays at least the information code in a predetermined readable state while the reading of the information code is performed. Keep the display in a possible state,
Even when the direction detecting unit detects that the direction of the display unit is the predetermined direction, when the portable information code display device is in a predetermined moving state, the information code is read. A portable information code display device characterized by not performing control to display in a possible state. A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
A storage unit storing a plurality of types of information codes that can be displayed on the display unit;
A communication unit capable of communicating with an external device;
With
The display control unit
When the direction detecting unit detects that the direction of the display unit is the predetermined direction, the display unit displays at least the information code in a predetermined readable state while the reading of the information code is performed. The plurality of types of information stored in the storage unit in response to communication with the external device via the communication unit when maintaining the display in a possible state and displaying the information code in the readable state A portable information code display device, wherein one of codes is selected and displayed. A display unit capable of displaying an image;
A display control unit configured to be able to control display performed on the display unit;
A direction detection unit capable of detecting that at least the direction in which the display unit faces is a predetermined direction;
An operation unit that is permitted to perform the display of the information code;
With
The display control unit
When the permission operation is performed on the operation unit and the direction detection unit detects that the display unit is in the predetermined direction, the display unit reads at least a predetermined information code. Maintaining the display of the information code in the readable state while displaying in a possible state,
When the permission operation is not performed on the operation unit, the display of the information code is prohibited even when the direction of the display unit is detected to be the predetermined direction. A portable information code display device. The display control unit
It is a configuration that performs control to switch the display on the display unit to a predetermined suppression state when a predetermined suppression condition is satisfied,
When the direction detection unit detects that the direction of the display unit is the predetermined direction in the predetermined suppression state, the predetermined suppression state is stopped, and the information code is displayed on the display unit. The portable information code display device according to any one of claims 1 to 5, wherein the information code is displayed in the readable state while being displayed in the readable state. The readable state is a state in which light is irradiated in a predetermined irradiation state from at least a backlight of the display unit,
The display control unit
When the predetermined suppression condition is satisfied, the display unit backlight is turned off or the control unit performs suppression control to suppress light irradiation from the display unit backlight more than in the predetermined irradiation state.
When the direction detection unit detects that the direction of the display unit is the predetermined direction in the predetermined suppression state, the predetermined suppression state is stopped, and the predetermined suppression state is canceled from the backlight of the display unit. 7. The portable information code display device according to claim 6, wherein the information code is displayed while being irradiated with light.   The display control unit, when a predetermined permission condition for permitting the display of the information code is satisfied, when the direction detection unit detects that the direction of the display unit is a predetermined direction, 8. The display unit according to claim 1, wherein the display unit displays the information code in the readable state, and maintains the display of the information code in the readable state. Portable information code display device. The direction detection unit is capable of detecting a state in which the display unit faces vertically downward or vertically obliquely downward,
The display control unit is configured to display the information code in the readable state on the display unit when the direction detection unit detects a state in which the display unit faces vertically downward or obliquely downward. The portable information code display device according to any one of claims 1 to 8, wherein the display of the information code in the readable state is maintained.   In the display control unit, when the direction detection unit detects that the direction of the display unit is the predetermined direction, the information code is continuously displayed on the display state of the display unit. The portable information code display device according to any one of claims 1 to 9, wherein the portable information code display device is fixed for a certain period in a state. The display control unit
The display state on the display unit can be changed between a display state in which the information code is in the readable state and a state in which another figure or other information different from the configuration of the information code is displayed. Has been
When the direction detection unit detects that the direction of the display unit is the predetermined direction, the information code is displayed in the readable state on the display unit, and the readable state of the information code is displayed. The portable information code display device according to any one of claims 1 to 10, wherein the display is maintained. The display control unit
The display state on the display unit is configured to be changeable between a display state in which the information code is in the readable state and a display state in which the code area of the information code is unreadable. And
At least when the direction of the display unit detected by the direction detection unit is the predetermined direction, the information code is displayed in the readable state on the display unit, and the readable state of the information code is displayed. The portable information code display device according to any one of claims 1 to 11, wherein the display is maintained.   When displaying the information code in the readable state, the display control unit displays an image corrected based on an angle formed by a reference direction serving as a reference of the predetermined direction and a direction of the display unit. The portable information code display device according to any one of claims 1 to 12, wherein the portable information code display device is a display device.