JP2015179392A - Code symbol display device, information processor, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transmit related information related to the information of a code symbol with a simple configuration while having an information transmission function using the code symbol.SOLUTION: A code symbol display device includes: reading bar code information stored in a storage part (step S1); allowing a display part to display a bar code on the basis of the read bar code information (step S2); reading visible light communication information related to the bar code information from the storage part (step S3); and allowing a bark light to blink in accordance with a blink pattern corresponding to the visible light communication information (step S5). The code symbol display device repeatedly transmit the visible light communication information by visible light communication using the display part while allowing the display part to display the bar code based on the bar code information.

Description

  The present invention relates to a code symbol display device, an information processing device, and a program.

  In recent years, electronic shelves (ESL: Electronic Shelf Labels) that display product names, prices, barcodes, and the like on a liquid crystal display have become widespread in stores such as supermarkets (see Patent Document 1). By using electronic shelf labels, information such as prices can be changed in real time, and paper resources can be reduced.

  When reading barcodes displayed on electronic shelf labels, laser scanner type barcode readers or barcode readers equipped with image sensors such as CCD (Charge Coupled Device) and CMOS (Complementary Metal Oxide Semiconductor) are used. It is done.

JP 2001-161522 A

  By the way, when trying to transmit related information related to the information of the code symbol separately from the code symbol such as the barcode and the two-dimensional code, a separate communication means is required, which causes problems such as complicated device configuration and increased cost. there were.

  An object of the present invention is to enable transmission of related information related to code symbol information with a simple configuration while having an information transmission function using code symbols.

  In order to solve the above-described problem, a code symbol display device according to the present invention includes a display unit that displays a code symbol, a communication unit that performs visible light communication using the display unit, and a relationship related to information of the code symbol. Control means for transmitting information by the communication means.

  According to the present invention, it is possible to transmit related information related to code symbol information with a simple configuration while having an information transmission function using code symbols.

It is a block diagram which shows the functional structure of the code symbol display apparatus of 1st Embodiment. It is a block diagram which shows the functional structure of the information processing apparatus of 1st Embodiment. It is a flowchart which shows the information provision process performed in the code symbol display apparatus of 1st Embodiment. It is a flowchart which shows the information acquisition process performed in the information processing apparatus of 1st Embodiment. (A) is a figure which shows the example of a barcode. (B) is a figure which shows the example of the blinking algorithm for visible light communication. It is a blinking display example of the barcode by visible light communication. (A) is a bar code display example in the code symbol display device. (B) is an example in the case where only a part of the barcode enters the angle of view in the information processing apparatus. This is an example when the code symbol display device is applied to a digital signage device. It is a flowchart which shows the information acquisition process performed in the information processing apparatus of 3rd Embodiment.

[First Embodiment]
First, a first embodiment of a code symbol display device according to the present invention will be described. The present invention is not limited to the illustrated example.

FIG. 1 is a block diagram showing a functional configuration of the code symbol display device 10. The code symbol display device 10 is installed in a store such as a supermarket in association with a product on a shelf or the like on which the product is displayed.
As shown in FIG. 1, the code symbol display device 10 includes a CPU (Central Processing Unit) 11, a display unit 12, a storage unit 13, a ROM (Read Only Memory) 14, a RAM (Random Access Memory) 15, and the like. And a power supply unit 16.

  The CPU 11 comprehensively controls the processing operation of each part of the code symbol display device 10. Specifically, the CPU 11 reads out various programs stored in the ROM 14, develops them in the RAM 15, and performs various processes in cooperation with the programs.

  The display unit 12 includes a liquid crystal panel 121, a backlight 122 that illuminates the liquid crystal panel 121, and the like, and performs screen display according to a display control signal from the CPU 11.

The memory | storage part 13 is comprised by a non-volatile memory etc., and memorize | stores information so that reading and writing are possible. The storage unit 13 stores barcode information D1 and visible light communication information D2.
The barcode information D1 is information on a barcode as a code symbol, and is information for displaying the barcode on the display unit 12. The barcode information D1 includes, for example, information such as the product name and price of the product corresponding to the position where the code symbol display device 10 is installed.
The visible light communication information D2 is related information related to the barcode information D1, and is information transmitted by visible light communication.

  The ROM 14 is a read-only semiconductor memory that stores various programs and various data. The ROM 14 stores an information providing program 141.

The RAM 15 is a volatile memory. The RAM 15 stores various programs to be executed and data related to these various programs.
The power supply unit 16 supplies power to each unit of the code symbol display device 10 including the CPU 11.

The CPU 11 displays a barcode on the display unit 12 based on the barcode information D1.
The CPU 11 uses the display unit 12 to transmit the visible light communication information D2 by visible light communication. That is, the CPU 11 and the display unit 12 function as communication means. Visible light communication is wireless communication using electromagnetic waves in the visible light region.

  The CPU 11 performs visible light communication by switching between turning on and off the backlight 122 of the display unit 12. Specifically, the CPU 11 converts the visible light communication information D2 into a blinking pattern for controlling the turning on / off of the backlight 122 according to a predetermined algorithm, and based on this blinking pattern, the lighting of the backlight 122 is changed. Switch off.

  The CPU 11 performs visible light communication at the timing when the barcode is displayed on the display unit 12. The “timing when the barcode is displayed” only needs to overlap with a period in which it can be recognized that the barcode is visually displayed. The period when the barcode is not displayed due to visible light communication ( Including when the backlight 122 is turned off).

FIG. 2 is a block diagram illustrating a functional configuration of the information processing apparatus 20. The information processing device 20 is used when acquiring information from the code symbol display device 10 over the code symbol display device 10 in the store. As the information processing apparatus 20, for example, a smartphone or the like is used.
As illustrated in FIG. 2, the information processing apparatus 20 includes a CPU 21, an imaging unit 22, an operation unit 23, a display unit 24, a communication unit 25, a storage unit 26, a ROM 27, a RAM 28, and a power supply unit 29. And a barcode processing unit 30 and a visible light communication processing unit 31.

  The CPU 21 comprehensively controls the processing operation of each unit of the information processing apparatus 20. Specifically, the CPU 21 reads out various programs stored in the storage unit 26 or the ROM 27, develops them in the RAM 28, and performs various processes in cooperation with the programs.

  The imaging unit 22 includes a lens 221 and an image sensor 222. The image sensor 222 includes a CCD, a CMOS, or the like, converts an optical image that has passed through the lens 221 into a two-dimensional image signal, and generates image data.

  The operation unit 23 includes a touch panel formed on the screen of the display unit 24 and outputs an operation signal corresponding to a touch input from the user to the CPU 21. The operation unit 23 may include various hard keys and output an operation signal corresponding to each key operation to the CPU 21.

  The display unit 24 is configured by an LCD (Liquid Crystal Display) or the like, and performs screen display according to a display control signal from the CPU 21. For example, the display unit 24 displays a captured image based on the image data generated by the imaging unit 22, barcode information D1 indicated by the read barcode, and visible light communication information D2 obtained by visible light communication.

  The communication unit 25 includes an antenna and a communication circuit, and transmits and receives voice calls, mails, and the like with the base station using the antenna. In addition, the communication unit 25 performs data communication via the communication network by being relayed by the base station.

  The storage unit 26 is configured by a non-volatile memory or the like, and stores information in a readable and writable manner. An information acquisition program 261 is stored in the storage unit 26.

  The ROM 27 is a read-only semiconductor memory that stores various programs and various data.

The RAM 28 is a volatile memory. The RAM 28 stores various programs to be executed and data related to these various programs.
The power supply unit 29 supplies power to each unit of the information processing apparatus 20 including the CPU 21.

  The barcode processing unit 30 analyzes a barcode included in the image data generated by the imaging unit 22, and acquires barcode information D1 from the barcode. The barcode processing unit 30 is realized by software processing in cooperation with the CPU 21 and a program.

  The visible light communication processing unit 31 acquires visible light communication information D <b> 2 from the moving image data continuously generated by the imaging unit 22. Specifically, the visible light communication processing unit 31 determines each frame of the moving image data based on a predetermined threshold value as a bright frame (equivalent when the backlight 122 is turned on) and a dark frame (equivalent when the backlight 122 is turned off). ) And detect the blinking pattern. The visible light communication processing unit 31 acquires visible light communication information D2 based on the detected blinking pattern. The visible light communication processing unit 31 is realized by software processing in cooperation with the CPU 21 and a program.

Next, operations of the code symbol display device 10 and the information processing device 20 will be described.
FIG. 3 is a flowchart showing an information providing process executed in the code symbol display device 10. This process is realized by software processing in cooperation with the CPU 11 and the information providing program 141 stored in the ROM 14.

  First, the CPU 11 reads the barcode information D1 stored in the storage unit 13 (step S1). The CPU 11 stores the read barcode information D1 in the RAM 15.

  Next, CPU11 displays a barcode on the display part 12 based on barcode information D1 (step S2).

  Next, the CPU 11 reads the visible light communication information D2 stored in the storage unit 13 (step S3). The CPU 11 stores the read visible light communication information D2 in the RAM 15.

  Next, the CPU 11 controls the backlight 122 to transmit a visible light communication start signal (step S4). Specifically, the CPU 11 causes the backlight 122 to blink according to a blinking pattern corresponding to a predetermined start signal.

  Next, the CPU 11 causes the backlight 122 to blink according to the blinking pattern corresponding to the visible light communication information D2 (step S5). That is, the CPU 11 uses the display unit 12 to transmit the visible light communication information D2 by visible light communication.

  Next, the CPU 11 controls the backlight 122 to transmit a termination signal for visible light communication (step S6). Specifically, the CPU 11 causes the backlight 122 to blink according to a blinking pattern corresponding to a predetermined termination signal.

  Here, the CPU 11 determines whether or not to terminate the visible light communication (step S7). The end of the visible light communication is determined according to a predetermined criterion, for example, when a predetermined time has elapsed since the start of bar code display, or when power supply from the power supply unit 16 is stopped. When the visible light communication is not terminated (step S7; NO), the process returns to step S4, and the processes of steps S4 to S7 are repeated. That is, the CPU 11 repeatedly transmits the visible light communication information D2 through visible light communication while displaying the barcode based on the barcode information D1 on the display unit 12.

  In step S7, when the visible light communication is terminated (step S7; YES), the information providing process is terminated.

  In the first embodiment, it is assumed that the visible light communication information D2 has the same content as the barcode information D1.

  FIG. 4 is a flowchart showing information acquisition processing executed in the information processing apparatus 20. This process is a process performed when image data is generated by the imaging unit 22, and is realized by a software process in cooperation with the CPU 21 and the information acquisition program 261 stored in the storage unit 26.

  First, the CPU 21 determines whether or not the barcode processing unit 30 can read the barcode from the image data generated by the imaging unit 22 (step T1). For example, if the barcode included in the image data is too small, or if the barcode is partially missing, the barcode cannot be read.

  If the barcode can be read (step T1; YES), the CPU 21 acquires the barcode information D1 obtained by the analysis in the barcode processing unit 30 (step T2). The CPU 21 stores the acquired barcode information D1 in the RAM 28.

  Next, the CPU 21 determines whether or not the visible light communication processing unit 31 can receive the visible light communication information D2 from the moving image data continuously generated by the imaging unit 22 (step T3). The visible light communication processing unit 31 analyzes the moving image data to detect the blinking pattern and acquires the visible light communication information D2 from the blinking pattern. For example, when the moving image data is interrupted during the visible light communication, Cannot receive the visible light communication information D2.

  When the visible light communication information D2 can be received (step T3; YES), the CPU 21 acquires the visible light communication information D2 obtained by the analysis in the visible light communication processing unit 31 (step T4). The CPU 21 stores the acquired visible light communication information D2 in the RAM 28.

Next, the CPU 21 collates the barcode information D1 acquired in step T2 with the visible light communication information D2 acquired in step T4 (step T5), and the information acquisition process ends. If the barcode information D1 and the visible light communication information D2 match, the information obtained from the code symbol display device 10 is considered to be more accurate.
Therefore, when the barcode information D1 and the visible light communication information D2 match, information for notifying the user that the information obtained from the code symbol display device 10 is more accurate is displayed on the display unit 24. You may make it display.

  In step T3, when the visible light communication information D2 cannot be received (step T3; NO), the information acquisition process ends. In this case, only the barcode information D1 acquired in step T2 becomes information obtained from the code symbol display device 10, and a reading result equivalent to the information obtained from the conventional barcode is obtained.

  When the barcode cannot be read in step T1 (step T1; NO), the CPU 21 obtains the visible light communication information D2 from the moving image data continuously generated by the imaging unit 22 in the visible light communication processing unit 31. It is determined whether or not reception is possible (step T6).

  When the visible light communication information D2 can be received (step T6; YES), the CPU 21 acquires the visible light communication information D2 obtained by the analysis in the visible light communication processing unit 31 (step T7), and the information acquisition process is performed. finish. In this case, only the visible light communication information D2 acquired in step T7 is information obtained from the code symbol display device 10, and in a situation where the barcode cannot be read by the conventional method, the barcode information D1 is obtained by another method. The same information (visible light communication information D2) is obtained.

  In step T6, when the visible light communication information D2 cannot be received (step T6; NO), the information acquisition process ends. In this case, there is no information obtained from the code symbol display device 10, and the result is as before.

  FIG. 5A shows an example of a bar code representing the bar code information D1 “123” with the bar code type “Code 39”. This barcode is composed of four types of bars: a thick white bar, a thin white bar, a thick black bar, and a thin black bar.

  FIG. 5B shows an example of a blinking algorithm for visible light communication corresponding to each bar constituting the barcode. A thick white bar is represented by "2 frames off", a thin white bar is represented by "1 frames off", a thick black bar is represented by "2 frames on", and a thin black bar is represented by "1 frames on". Is done.

  FIGS. 6A to 6H are bar code blinking display examples by visible light communication. The backlight 122 is caused to blink according to the blinking algorithm shown in FIG. 5B according to the color and thickness of the bar code bar displayed on the display unit 12. The bar code shown in FIG. 5 (a) continues from left to right: a thin black bar, a thick white bar, a thin black bar, a thin white bar, a thick black bar, a thin white bar, and so on. As shown in FIGS. 6A to 6H, they are turned on, turned off, turned off, turned on, turned off, turned on, turned on, and turned off.

  When the code symbol display device 10 provided with the backlight 122 driven at 60 Hz and the information processing device 20 equipped with the image sensor 222 having a sampling rate of 60 Hz are used, the barcode shown in FIG. When the backlight 122 is blinked by the algorithm of (b), visible light communication can be performed in about 1 second.

  FIG. 7A shows a bar code display example in the code symbol display device 10. The code symbol display device 10 performs visible light communication by blinking the backlight 122 while displaying a barcode on the display unit 12.

  FIG. 7B shows an example where only a part of the barcode enters the angle of view of the image sensor 222 in the information processing apparatus 20. Only a part of the barcode is displayed on the display unit 24. In a barcode scanner equipped with a conventional image sensor, the barcode may not be able to be read because it is not within the angle of view, but according to the present embodiment, a part of the barcode does not fall within the angle of view. The visible light communication information D2 that is the same as the barcode information D1 can be acquired by visible light communication even in a situation or a situation in which a part is shielded.

As described above, according to the first embodiment, in the code symbol display device 10, visible light communication is enabled by the display unit 12, and thus related information (visible light communication information) related to the barcode information D <b> 1. It is not necessary to provide a separate communication means for transmitting D2). Therefore, it is possible to transmit related information (visible light communication information D2) with a simple configuration while having an information transmission function using a barcode.
Visible light communication is less susceptible to differences due to the focus distance of the image sensor, and the range of communication distances is wide. Therefore, it is difficult for barcode readers equipped with conventional image sensors to read barcodes. In addition, information can be transmitted by visible light communication.

  Further, since the visible light communication is performed at the timing when the barcode is displayed on the display unit 12, the visible light communication information D2 can be transmitted while displaying the barcode information D1.

  Moreover, since visible light communication is performed by switching on and off of the backlight 122, the visible light communication information D2 can be transmitted with a simple configuration.

Further, by using the same information as the barcode information D1 as the visible light communication information D2, the reliability of the information is increased in an apparatus that can acquire both pieces of information.
Also, if the barcode is too far away to be recognized as a barcode, or if the barcode is too close to fit in the angle of view, the barcode is visible even if part or all of the barcode cannot be read. The same information as the barcode information D1 can be acquired by optical communication.
In addition, information can be acquired if the apparatus has one of the functions of barcode reading and visible light communication analysis.

  In the first embodiment, the case where a barcode is used as a code symbol has been described. However, another code symbol such as a two-dimensional code may be used.

FIG. 8 shows an example in which the code symbol display device 10 is applied to the digital signage device 10A. In the digital signage apparatus 10A, the same reference numerals are used for the same configurations as those of the code symbol display apparatus 10.
The storage unit 13 of the digital signage apparatus 10A stores two-dimensional code information instead of the barcode information D1, and the display unit 12 displays the two-dimensional code 40 instead of the barcode. The visible light communication information D2 stored in the storage unit 13 of the digital signage apparatus 10A is related information related to the two-dimensional code information. When the screen is large like the digital signage apparatus 10A, visible light communication may be performed by partially turning on / off only the backlight 122 of the two-dimensional code 40.

Normally, a two-dimensional code scanner equipped with a fixed focus image sensor has a maximum reading distance of around 700 mm. On the other hand, in visible light communication, communication is possible within the reach of the light emitted from the light source. Therefore, when a general liquid crystal display is used, communication is possible at a distance of about several meters.
Therefore, even if it is impossible to acquire information by a two-dimensional code scanner at a position about several meters away from the digital signage device 10A, if visible light communication analysis is possible, visible light communication is possible by visible light communication. Information D2 can be acquired. Further, even a device that does not have a two-dimensional code decoder can easily obtain the visible light communication information D2.

[Second Embodiment]
Next, a second embodiment to which the present invention is applied will be described.
Since the code symbol display device and the information processing device in the second embodiment have the same configuration as the code symbol display device 10 and the information processing device 20 shown in the first embodiment, FIG. 1 and FIG. Incorporated, illustration and description of the configuration are omitted. Hereinafter, a configuration and processing characteristic of the second embodiment will be described.

  In the second embodiment, the information providing process executed in the code symbol display device 10 is the same as the information providing process (FIG. 3) described in the first embodiment. However, in the second embodiment, the visible light communication information D2 is different from the barcode information D1.

  In the second embodiment, in the code symbol display device 10, information such as the product name, price, and inventory is displayed as a barcode as the barcode information D1, and the production place of the product is displayed as the visible light communication information D2. Information on producers, discounts, etc. is transmitted by visible light communication.

  The information processing apparatus 20 acquires barcode information D1 read from the barcode and visible light communication information D2 received by visible light communication.

According to the second embodiment, since the information different from the barcode information D1 is used as the visible light communication information D2, the code symbol display device 10 transmits different information respectively by the barcode and the visible light communication. In addition, various types of information can be transmitted with a simple configuration.
Further, in the information processing apparatus 20, separate information can be acquired as the barcode information D1 and the visible light communication information D2.

[Modification]
The modified example of the second embodiment includes both functions of barcode reading (barcode processing unit 30) and visible light communication analysis (visible light communication processing unit 31), like the information processing apparatus 20. This is an example in which one of the barcode information D1 and the visible light communication information D2 is acquired not by the device but by a device having any one function of barcode reading and visible light communication analysis.

  For example, in the code symbol display device 10, the information for the store clerk to be transmitted to the store clerk in the store as the bar code information D1 is displayed by the bar code, and for the customer to transmit to the customer as the visible light communication information D2. Information is transmitted by visible light communication.

As a result, when a bar code scanner dedicated to bar code reading used by the store clerk is used, information for the store clerk (bar code information D1) is obtained from the bar code displayed on the display unit 12 of the code symbol display device 10. ) Can be read.
On the other hand, when visible light communication analysis is possible in the smartphone used by the customer, customer information (visible light communication information D2) may be received from the display unit 12 of the code symbol display device 10 by visible light communication. it can.

[Third Embodiment]
Next, a third embodiment to which the present invention is applied will be described.
Since the code symbol display device and the information processing device in the third embodiment have the same configuration as the code symbol display device 10 and the information processing device 20 shown in the first embodiment, FIG. 1 and FIG. Incorporated, illustration and description of the configuration are omitted. Hereinafter, a configuration and processing characteristic of the third embodiment will be described.

  In the third embodiment, the information providing process executed in the code symbol display device 10 is the same as the information providing process (FIG. 3) described in the first embodiment. However, in the third embodiment, the visible light communication information D2 is different from the barcode information D1.

  In the third embodiment, in the code symbol display device 10, auxiliary information for assisting barcode reading is transmitted as visible light communication information D <b> 2 by visible light communication. As auxiliary information, for example, the number of digits of information represented by a barcode, the type of barcode, a check digit, and the like are used.

  FIG. 9 is a flowchart showing information acquisition processing executed in the information processing apparatus 20. This process is a process performed when image data is generated by the imaging unit 22, and is realized by a software process in cooperation with the CPU 21 and the information acquisition program 261 stored in the storage unit 26.

  Steps T11 to T13 are the same as steps T1 to T3 in FIG.

  If the visible light communication information D2 can be received in step T13 (step T13; YES), the CPU 21 acquires auxiliary information as the visible light communication information D2 obtained by the analysis in the visible light communication processing unit 31 ( Step T14). The CPU 21 stores the acquired auxiliary information in the RAM 28.

  Next, the CPU 21 confirms the content of the barcode information D1 acquired in step T12 based on the auxiliary information acquired in step T14 (step T15), and the information acquisition process ends. Specifically, the CPU 21 determines whether or not the barcode information D1 matches the number of digits, the type of barcode, the check digit, etc. indicated by the auxiliary information. If the content of the barcode information D1 matches the auxiliary information, the information obtained from the code symbol display device 10 is considered to be more accurate.

  When the barcode cannot be read in step T11 (step T11; NO), the CPU 21 obtains the visible light communication information D2 from the moving image data continuously generated by the imaging unit 22 in the visible light communication processing unit 31. It is determined whether or not reception is possible (step T16).

  When the visible light communication information D2 can be received (step T16; YES), the CPU 21 acquires auxiliary information as the visible light communication information D2 obtained by the analysis in the visible light communication processing unit 31 (step T17). The CPU 21 stores the acquired auxiliary information in the RAM 28.

  Next, the CPU 21 changes the barcode reading setting in the barcode processing unit 30 based on the number of digits indicated by the auxiliary information, the type of barcode, the check digit, and the like (step T18), and returns to step T11. That is, the CPU 21 changes the barcode reading setting and tries the barcode reading in the barcode processing unit 30 again. Thereby, it may be possible to read the barcode.

  If the visible light communication information D2 cannot be received in step T13 (step T13; NO), or if the visible light communication information D2 cannot be received in step T16 (step T16; NO), the information acquisition process ends.

According to the third embodiment, since the auxiliary information for assisting the reading of the barcode is used as the visible light communication information D2, the code symbol display device 10 displays the barcode and assists by the visible light communication. Information can be transmitted.
In the information processing apparatus 20, the barcode information D1 can be acquired as more reliable information by the auxiliary information. Further, in a situation where barcodes could not be read conventionally, the barcode reading setting in the barcode processing unit 30 can be changed based on the auxiliary information.

  The descriptions in the above embodiments are examples of the code symbol display device according to the present invention, and the present invention is not limited to this. The detailed configuration and detailed operation of each part constituting the apparatus can be changed as appropriate without departing from the spirit of the present invention.

  For example, in each of the above-described embodiments, the case where visible light communication is performed by switching on and off the backlight 122 of the code symbol display device 10 has been described, but at least a part of an image displayed on the display unit 12 is described. Visible light communication may be performed by switching between display and non-display of a code symbol portion or the like. For example, on the image data, an image for displaying a code symbol and an image showing a uniform brightness with a predetermined darkness are switched. Alternatively, visible light communication is performed by switching the color of the code symbol. Also in these methods, the visible light communication information D2 can be transmitted with a simple configuration. Note that visible light communication is not limited to these methods, and it is only necessary that the visible light communication information D2 can be transmitted using the display unit 12.

In the first embodiment, the case where the visible light communication information D2 has the same content as the barcode information D1 will be described. In the second embodiment and the third embodiment, the visible light communication information D2 is described. However, the visible light communication information D2 may include both the same information as the barcode information D1 and the information different from the barcode information D1.
Moreover, it is good also as combining the characteristic process in said each embodiment and modification.

In each of the above embodiments, the case where the visible light communication is performed at the timing when the barcode is displayed has been described. However, the display of the barcode and the timing of the visible light communication may be different.
Also in the second embodiment and the third embodiment, a code symbol other than a barcode may be used.

Although the embodiments of the present invention have been described, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and the equivalents thereof.
The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
Display means for displaying code symbols;
Communication means for performing visible light communication using the display means;
Control means for causing the communication means to transmit related information related to the information of the code symbol;
A code symbol display device comprising:
<Claim 2>
The code symbol display device according to claim 1, wherein the communication unit performs visible light communication at a timing when the code symbol is displayed on the display unit.
<Claim 3>
The code symbol display device according to claim 1, wherein the communication unit performs visible light communication by switching between turning on and off a backlight that illuminates the display unit.
<Claim 4>
The code symbol display device according to claim 1, wherein the communication unit performs visible light communication by switching between display and non-display of at least a part of an image displayed on the display unit.
<Claim 5>
The code symbol display device according to any one of claims 1 to 4, wherein the related information includes the same information as the information of the code symbol.
<Claim 6>
The code symbol display device according to claim 1, wherein the related information includes information different from information of the code symbol.
<Claim 7>
The code symbol display device according to claim 6, wherein the related information includes auxiliary information for assisting reading of the code symbol.
<Claim 8>
Reading means for reading the code symbol displayed on the code symbol display device;
Receiving means for receiving related information related to the information of the code symbol transmitted by visible light communication from the code symbol display device;
Confirmation means for confirming the information of the code symbol based on the information of the code symbol read by the reading means and the related information received by the receiving means;
An information processing apparatus comprising:
<Claim 9>
The related information includes auxiliary information for assisting reading of the code symbol,
The information processing apparatus according to claim 8, wherein the confirmation unit confirms information on the code symbol based on the auxiliary information included in the related information.
<Claim 10>
Code symbol display computer
Means for displaying a code symbol on a display means;
Means for transmitting related information related to the information of the code symbol by visible light communication using the display means;
Program to function as.
<Claim 11>
The computer of the information processing device
Reading means for reading the code symbol displayed on the code symbol display device;
Receiving means for receiving related information related to information of the code symbol transmitted by visible light communication from the code symbol display device;
Confirmation means for confirming the information of the code symbol based on the information of the code symbol read by the reading means and the related information received by the receiving means;
Program to function as.

10 Code Symbol Display Device 10A Digital Signage Device 11 CPU
12 Display unit 13 Storage unit 14 ROM
20 Information processing device 21 CPU
22 Imaging unit 26 Storage unit 30 Barcode processing unit 31 Visible light communication processing unit 121 Liquid crystal panel 122 Backlight 141 Information providing program 222 Image sensor 261 Information acquisition program D1 Barcode information D2 Visible light communication information

Claims (11)

Display means for displaying code symbols;
Communication means for performing visible light communication using the display means;
Control means for causing the communication means to transmit related information related to the information of the code symbol;
A code symbol display device comprising:   The code symbol display device according to claim 1, wherein the communication unit performs visible light communication at a timing when the code symbol is displayed on the display unit.   The code symbol display device according to claim 1, wherein the communication unit performs visible light communication by switching between turning on and off a backlight that illuminates the display unit.   The code symbol display device according to claim 1, wherein the communication unit performs visible light communication by switching between display and non-display of at least a part of an image displayed on the display unit.   The code symbol display device according to any one of claims 1 to 4, wherein the related information includes the same information as the information of the code symbol.   The code symbol display device according to claim 1, wherein the related information includes information different from information of the code symbol.   The code symbol display device according to claim 6, wherein the related information includes auxiliary information for assisting reading of the code symbol. Reading means for reading the code symbol displayed on the code symbol display device;
Receiving means for receiving related information related to the information of the code symbol transmitted by visible light communication from the code symbol display device;
Confirmation means for confirming the information of the code symbol based on the information of the code symbol read by the reading means and the related information received by the receiving means;
An information processing apparatus comprising: The related information includes auxiliary information for assisting reading of the code symbol,
The information processing apparatus according to claim 8, wherein the confirmation unit confirms information on the code symbol based on the auxiliary information included in the related information. Code symbol display computer
Means for displaying a code symbol on a display means;
Means for transmitting related information related to the information of the code symbol by visible light communication using the display means;
Program to function as. The computer of the information processing device
Reading means for reading the code symbol displayed on the code symbol display device;
Receiving means for receiving related information related to information of the code symbol transmitted by visible light communication from the code symbol display device;
Confirmation means for confirming the information of the code symbol based on the information of the code symbol read by the reading means and the related information received by the receiving means;
Program to function as.

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