JP2013186486A - Code reading device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a code reading device and a program for improving the security of a code symbol.SOLUTION: The code reading device includes: reading means for, from code symbols in which at least current order information representing an order relating to the reading of the self-code symbols is stored, reading the current order information; determination means for, on the basis of the current order information read from the plurality of the code symbols by the reading means, determining whether or not the code symbols have been read in the predetermined order; and output means for, when it is determined that the code symbols have been read in the predetermined order by the determination means, outputting information read from any of the plurality of code symbols or all of them.

Description

  Embodiments described herein relate generally to a code reader and a program.

  Conventionally, various types of information are coded into code symbols such as QR code (registered trademark). Also, a general device such as a mobile phone has been equipped with a code symbol reader function. In addition, the use of code symbols is increasing in medical settings and the like, and information such as patient personal information is held in code symbols. In addition, a technique for newly generating an original code symbol by dividing a code symbol representing information such as a user ID into two code symbols and synthesizing these code symbols has been proposed.

  However, since the code symbol can be easily read by a device having a reader function, there is a security problem such as leakage of personal information. Further, even in the prior art that divides code symbols into two, the original code symbols can be easily restored by reading these two code symbols in no particular order, so there is room for improvement in terms of security.

  In order to solve the above-described problems and achieve the object, a code reading apparatus according to the present invention includes a reading unit, a determining unit, and an output unit. The reading means reads the current rank information from a code symbol that holds at least current rank information representing the rank related to the reading of its own code symbol. The determination unit determines whether the code symbols are read in a predetermined order based on the current order information read from the plurality of code symbols by the reading unit. The output means outputs information read from any or all of the plurality of code symbols when it is determined that the determination means is read in a predetermined order.

FIG. 1 is a diagram illustrating an example of a configuration of a nurse terminal according to the present embodiment. FIG. 2 is a diagram schematically showing a wristband worn on a patient's wrist. FIG. 3 is a flowchart illustrating an example of the code reading process. FIG. 4 is a flowchart illustrating another example of the code reading process.

  Embodiments of a code reader and a program according to the present invention will be described below in detail with reference to the accompanying drawings. In the following, an example applied to a nurse terminal used by a nurse in a hospital will be described, but the present invention is not limited to this embodiment.

  FIG. 1 is a diagram illustrating an example of a configuration of a nurse terminal 10 according to the present embodiment. The nurse terminal 10 is a portable terminal such as a notebook PC (Personal Computer), a tablet terminal, or a handy terminal carried by the nurse. As illustrated in FIG. 1, the nurse terminal 10 includes a CPU 11, a ROM 12, and a RAM 13 as a microcomputer that executes information processing.

  The CPU 11 comprehensively controls the operation of the nurse terminal 10 by executing various programs stored in the ROM 12 and the storage unit 17 described later. The ROM 12 stores a program for performing basic operations. The RAM 13 is a main storage device of the nurse terminal 10 and functions as a work area for the CPU 11.

  The CPU 11 is connected to an input unit 14 and a display unit 15 via various input / output circuits (not shown). The input unit 14 is an input device such as a keyboard or a pointing device, and notifies the CPU 11 of the operation content input from the operator of the nurse terminal 10. The display unit 15 includes a display device such as an LCD (Liquid Crystal Display) and displays various types of information according to instructions from the CPU 11. In addition, it is good also as a form which receives an input in cooperation with the display part 15 by making the input part 14 into a touch-panel structure.

  The CPU 11 is connected to an imaging unit 16, a storage unit 17, and a communication I / F 18 via various input / output circuits (not shown). The imaging unit 16 includes an image sensor such as a CCD (Charge Coupled Device), images an area including a code symbol such as a QR code (registered trademark), and an image signal (hereinafter, a captured image) as an imaging result. Is output to the CPU 11. Note that the code symbols to be imaged in this embodiment will be described later.

  The storage unit 17 is a storage medium such as an HDD or a flash memory, and stores various programs and various files related to the control of the nurse terminal 10. The communication I / F 18 is an interface provided in the hospital and connectable to a network (not shown), and transmits / receives various data to / from an external device connected to the network.

  Next, characteristic functions of the nurse terminal 10 will be described. As illustrated in FIG. 1, the CPU 11 realizes the information reading unit 111, the reading order determination unit 112, and the display control unit 113 as functional units in cooperation with a predetermined program stored in the ROM 12 or the storage unit 17. .

  The information reading unit 111 decodes a code symbol in the captured image acquired by the imaging unit 16 and reads information held in the code symbol. Here, with reference to FIG. 2, a code symbol to be read in this embodiment will be described.

  FIG. 2 is a diagram schematically showing a wristband worn on a patient's wrist. As shown in the figure, the wristband 20 has a plurality of code symbols (21 to 23) printed thereon. An operator (nurse) of the nurse terminal 10 can acquire patient information of a patient wearing the wristband 20 by reading the code symbols printed on the wristband 20 in a predetermined order. It has become. The patient information can include, for example, personal information such as a patient's name, sex, age, medical information regarding treatment, and the like.

  Here, the code symbol determined to be read first holds “1” as the code number indicating the reading order (order) of its own code symbol, and the code symbol determined to be read next A code number “2” representing the reading order is held. Hereinafter, the code number of its own code symbol is expressed as “current code number”, and the code number of the code symbol determined to be read next is expressed as “next code number”. The code symbol determined to be read second stores “2” as the current code number and “3” as the next code number.

  In this way, the nth code symbol (n is an integer equal to or greater than 1) has a current code number n indicating the reading order of its own code symbol and a next code number n + 1 indicating the next reading order. Is done. In addition, “N” is stored as the current code number indicating the reading order of its own code symbol in the last code symbol whose reading order is Nth (N is an integer of 2 or more, where n <N). The next code number is “none” (Null).

  The patient information is held in any one of the series of code symbols, and the patient information is extracted when the series of code symbols are read in reading order. In addition, it is good also as a form which divides | segments patient information so that restoration | restoration is possible, and divides | segments and hold | maintains this divided | segmented patient information (divided patient information) into each code symbol or any some code symbol.

  Returning to FIG. 1, the reading order determination unit 112 determines whether or not a series of code symbols has been read in a predetermined reading order based on the current code number and the next code number read by the information reading unit 111 from the code symbols. judge.

  Specifically, the reading order determination unit 112 determines whether or not the current code number of the code symbol first read by the information reading unit 111 is “1”, and reads when the current code number is other than “1”. Judge that the order is not being followed. When the reading order determination unit 112 determines that the reading order is not observed, the reading order determination unit 112 discards the information read by the information reading unit 111.

  When the current code number of the code symbol first read by the information reading unit 111 is “1”, the reading order determining unit 112 temporarily stores the next code number held in the code symbol, It is determined whether or not the next code number matches the current code number of the code symbol read next by the information reading unit 111. Here, when it is determined that there is a mismatch, the reading order determination unit 112 determines that the reading order is not observed. On the other hand, if it is determined that they match, the reading order determination unit 112 temporarily stores the next code number of the code symbol read most recently by the information reading unit 111, and this next code number is stored in the information reading unit 111. Then, it is determined whether or not it matches the current code number of the code symbol read next. Thereafter, the reading order determination unit 112 performs the same determination process each time the code symbol is read by the information reading unit 111.

  When a series of code symbols are read in the reading order and the last code symbol is read, the reading order determination unit 112 determines that the code symbol is read from the next code number “NULL” of the code symbol, and the code symbol is read. It is determined that they have been read in order.

  Further, when patient information is held in any one of the series of code symbols, the reading order determination unit 112 stores the patient information read by the information reading unit 111 from the code symbol in the RAM 13 or the like. When it is determined that the code symbols are read in the reading order, the patient information is output to the display control unit 113. Further, when patient information is divided and held in a plurality of code symbols, the reading order determination unit 112 holds the divided patient information read by the information reading unit 111 from each code symbol in a storage medium such as the RAM 13. When it is determined that the code symbols have been read in the reading order, the original patient information is restored from the divided patient information and output to the display control unit 113.

  The reading order determination unit 112 determines the elapsed time from the reading of the code symbol to the reading of the next code symbol using a time measuring unit (not shown) such as an RTC (Real Time Clock). Use to measure. When this elapsed time reaches a predetermined time limit, the reading order determination unit 112 determines that the reading order is not kept, and discards the information read by the information reading unit 111.

  The display control unit 113 executes control for displaying the patient information input from the reading order determination unit 112 on the display unit 15. In addition, the display form of patient information is not particularly limited, and for example, all or some information included in the patient information may be displayed.

  Hereinafter, the operation of the nurse terminal 10 will be described with reference to FIG. Here, FIG. 3 is a flowchart illustrating an example of a code reading process performed by the nurse terminal 10. In this process, the code symbol printed on the wristband 20 in FIG. 2 is read.

  First, the reading order determination unit 112 waits until the code symbol is read by the information reading unit 111 (step S11; No). When the reading order determination unit 112 determines that the code symbol is read by the information reading unit 111 (step S11; Yes), the reading order determination unit 112 determines whether or not the current code number read from the code symbol is “1” (step S12). ). Here, when it is determined that the read current code number is other than “1” (step S12; No), the reading order determination unit 112 determines that the reading order is not observed, and the information reading unit 111 has thus far been determined. After discarding the information read in (Step S13), the process returns to Step S11 again.

  If it is determined in step S12 that the current code number is “1” (step S12; Yes), the reading order determination unit 112 determines whether or not patient information (or divided patient information) is read from the code symbol ( Step S14). The information reading unit 111 reads the next code number from the code symbol together with the above-described current code number. When patient information is held in the code symbol, the information reading unit 111 also reads the patient information.

  When it is determined in step S14 that the patient information has been read (step S14; Yes), the reading order determination unit 112 temporarily stores the patient information and the next code number in the RAM 13 or the like (step S15), and the process proceeds to step S17. Transition. If it is determined that the patient information has not been read (step S14; No), the reading order determination unit 112 temporarily stores the next code number in the RAM 13 or the like (step S16), and proceeds to step S17.

  In subsequent step S17, the reading order determination unit 112 determines whether or not the elapsed time since the code symbol is read first has reached a predetermined time limit (step S17). If the time limit has been reached (step S17; Yes), the process returns to step S11 again after performing the process of step S13. When it is determined that the time limit has not been reached (step S17; No), the reading order determination unit 112 waits until the next code symbol is read by the information reading unit 111 until the time limit is reached. (Step S18; No → Step S17; No).

  If it is determined in step S18 that the next code symbol has been read by the information reading unit 111 (step S18; Yes), the reading order determination unit 112 determines the next code number for the previous reading temporarily stored in step S15 or S16. The current code number for the current reading read in step S18 is compared (step S19). If the code numbers do not match (step S20; No), the reading order determination unit 112 performs the process of step S13, and then returns to step S11 again. If it is determined that the code numbers match (step S20; Yes), the reading order determination unit 112 has entered a valid value (numerical value) for the next code number for the current reading read in step S18. It is determined whether or not (step S21).

  If it is determined in step S21 that a numerical value has been input for the next code number (step S21; Yes), the process returns to step S18 again. When the next code number is determined to be “NULL” (step S21; No), the reading order determination unit 112 determines that the code symbol read most recently is the end, and the code symbols are read in the reading order. to decide.

  Next, the reading order determination unit 112 outputs the temporarily stored patient information to the display control unit 113 (step S22). And the display control part 113 displays the patient information input from the reading order determination part 112 on the display part 15 (step S23), and complete | finishes this process.

  As described above, according to the present embodiment, when a plurality of code symbols are read in a predetermined reading order, patient information held in any or all of these code symbols is output. As a result, it is possible to prevent the patient information from being inadvertently output, so that the security of the code symbol can be improved.

  In the present embodiment, the series of code symbols is configured to hold the set of the current code number and the next code number. However, the present invention is not limited to this, and may be configured to hold other information. For example, instead of the next code number, the number of readings required for reading a series of code symbols may be held. Hereinafter, this form is demonstrated as a modification of this embodiment.

[Modification]
First, the code symbols used in this modification will be described with reference to FIG. As shown in the figure, the wristband 20 has a plurality of code symbols (21 to 23) printed thereon. An operator (nurse) of the nurse terminal 10 can acquire patient information of a patient wearing the wristband 20 by reading the code symbols printed on the wristband 20 in a predetermined order. It has become.

  Here, each code symbol holds a current code number n (n is an integer of 1 or more) indicating the reading order of its own code symbol. Further, in any one of the series of code symbols, the number of readings required to read these code symbols is held as a reading number upper limit value N (N is the same value as the number of code symbols in series). ing.

  The patient information is held in any one of the series of code symbols, and the patient information is extracted when the series of code symbols are read in reading order. In addition, it is good also as a form which distribute | divides and hold | maintains this divided | segmented patient information in each code symbol or any some code symbol by dividing | segmenting patient information so that restoration | restoration is possible.

  Next, the operation of the reading order determination unit 112 according to this modification will be described with reference to FIG. The reading order determination unit 112 determines whether or not a series of code symbols has been read in a predetermined reading order based on the current code number read from the code symbols by the information reading unit 111 and the reading count upper limit value N.

  Specifically, the reading order determination unit 112 counts the number of readings from 1 and determines whether the counter value C matches the current code number n of the code symbol read by the information reading unit 111. . If the two values do not match, the reading order determination unit 112 determines that the reading order is not kept, discards the information read by the information reading unit 111, and resets the counter value to 1.

  When the reading order determination unit 112 confirms that the counter value C matches the current code number n, the counter value C is read from any one code symbol in a series of code symbols. It is determined whether or not N matches. When the counter value C is less than the reading count upper limit value N, the counter value determination similar to the above is performed for the current code number newly read by the information reading unit 111. When the counter value C matches the reading count upper limit value N, the reading order determination unit 112 determines that the code symbol read most recently is the end, and determines that the code symbols are read in reading order.

  Hereinafter, the operation of the nurse terminal 10 will be described with reference to FIG. Here, FIG. 4 is a flowchart showing another example of the code reading process performed by the nurse terminal 10. In this process, the code symbol printed on the wristband 20 in FIG. 2 is read.

  First, the reading order determination unit 112 sets a counter value C for counting the number of readings to an initial value “1” (step S31). Subsequently, the reading order determination unit 112 determines whether or not the code symbol is read by the information reading unit 111 (step S32). If it is determined that the code symbol has not been read (step S32; No), the reading order determination unit 112 determines whether the elapsed time since the code symbol has been read first has reached a predetermined time limit. It is determined whether or not (step S33). When the counter value C is “1”, that is, at the start of reading the code symbol, step S33 may be skipped and the process may return to step S32.

  If it is determined in step S33 that the time limit has not been reached (step S33; No), the process returns to step S32. If the time limit is reached in step S33 (step S33; Yes), the information read by the information reading unit 111 is discarded (step S34), and the process returns to step S31 again.

  On the other hand, if it is determined in step S32 that the code symbol is read by the information reading unit 111 (step S32; Yes), the reading order determination unit 112 determines the counter value C and the current code number n read from the code symbol. Are compared (step S35), and it is determined whether or not both values match (step S36).

  If it is determined that the two values do not match (step S36; No), the reading order determination unit 112 determines that the reading order is not observed, performs the process of step S34, and then returns to step S31. Return. If it is determined in step S36 that the two values match (step S36; Yes), the reading order determination unit 112 determines whether or not the reading number upper limit N has been read from the code symbol (step S37). Here, when it is determined that the reading count upper limit N has not been read (step S37; No), the process proceeds to step S39. If it is determined in step S37 that the reading number upper limit N has been read (step S37; Yes), the reading order determination unit 112 temporarily stores the reading number upper limit N in the RAM 13 or the like (step S38). Control goes to step S39.

  Subsequently, the reading order determination unit 112 determines whether or not patient information (or divided patient information) has been read from the code symbol (step S39). Here, when it determines with patient information not being read (step S39; No), it transfers to step S41. If it is determined in step S39 that patient information has been read (step S39; Yes), the reading order determination unit 112 temporarily stores this patient information in the RAM 13 or the like (step S40), and proceeds to step S41.

  Next, the reading order determination unit 112 compares the current counter value C with the reading count upper limit value N temporarily stored in step S38, and determines whether or not both values match (step S41). Here, if C <N, or if the reading count upper limit N itself is not temporarily stored (step S41; No), the process proceeds to step S42. In step S42, the reading order determination unit 112 increments the counter value C by 1 (step S42), and returns to step S32.

  If it is determined in step S41 that C = N (step S41; Yes), the reading order determination unit 112 determines that the code symbol read most recently is the end, and the code symbols are read in reading order. to decide.

  Next, the reading order determination unit 112 outputs the temporarily stored patient information to the display control unit 113 (step S43). And the display control part 113 displays the patient information input from the reading order determination part 112 on the display part 15 (step S44), and complete | finishes this process.

  As described above, according to the present modification, when a plurality of code symbols are read in a predetermined reading order, any or all of the stored patient information of these code symbols is output. As a result, it is possible to prevent the patient information from being inadvertently output, so that the security of the code symbol can be improved. In addition, since the amount of information held in the code symbol can be reduced as compared with the configuration of the above-described embodiment, it is possible to improve the efficiency of processing related to determination of the reading order.

  The embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications, substitutions, additions, and the like are possible without departing from the spirit of the present invention.

  For example, in the above-described embodiment, an example in which a series of code symbols constituting the reading order is printed on the wristband 20 has been described. However, the present invention is not limited to this, and a dummy code that is not related to the reading order is used. A code symbol may be included. In the case of adopting this form, since the combination relating to the reading of the code symbol can be complicated, the security of the code symbol can be further improved.

  Moreover, although the example which added the code | symbol symbol to the wristband 20 used in the medical field was demonstrated in the said embodiment, it is good also as a form added not only to this but another goods. In the above embodiment, an example in which the present invention is applied to a nurse terminal for nurses has been described. However, the present invention is not limited to this, and the present invention is applied to an information processing apparatus used for other purposes than medical treatment. May be.

  In addition, the program executed by each device of the above embodiment is provided by being incorporated in advance in a recording medium (ROM or storage unit) included in each device, but is not limited thereto, and can be installed in a format or executable. Various types of files may be recorded and provided on a computer-readable recording medium such as a CD-ROM, a flexible disk (FD), a CD-R, or a DVD (Digital Versatile Disk). Furthermore, the recording medium is not limited to a medium independent of a computer or an embedded system, but also includes a recording medium in which a program transmitted via a LAN or the Internet is downloaded and stored or temporarily stored.

  Further, the program executed by each device of the above embodiment may be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network, or via a network such as the Internet. It may be configured to be provided or distributed.

10 Nurse terminal 11 CPU
111 Information Reading Unit 112 Reading Order Determination Unit 113 Display Control Unit 12 ROM
13 RAM
14 Input unit 15 Display unit 16 Imaging unit 17 Storage unit 18 Communication I / F

JP 2008-40517 A

Claims (6)

Reading means for reading the current rank information from a code symbol holding at least current rank information representing a rank related to reading of its own code symbol;
Determination means for determining whether the code symbols are read in a predetermined order based on the current order information read from the plurality of code symbols by the reading means;
An output means for outputting information read from any or all of the plurality of code symbols when the determination means determines that the read in the predetermined order;
A code reader comprising: The code symbol holds at least the current rank information of its own code symbol and next rank information representing the next rank of the rank represented by the current rank information,
The reading means further reads the next order information from the code symbol,
For the plurality of code symbols read continuously by the reading means, the determination means includes the next order information of the code symbol read first, and the current order information of the code symbol read next to the code symbol. The code reading device according to claim 1, wherein when the two ranks coincide with each other, it is determined that the reading is performed in the predetermined order. Of the series of code symbols constituting the reading order, any one code symbol holds upper limit information indicating the number of times required to read the series of code symbols,
The reading means further reads the upper limit information when the code symbol includes the upper limit information;
The determination unit matches a value represented by the current rank information of each code symbol read by the reading unit with the number of readings by which the reading unit has read the series of code symbols, and the number of readings is The code reading device according to claim 1, wherein when the value of the upper limit value information read from any one of the series of code symbols matches, the code reading device determines that the reading is performed in the predetermined order. Of the series of code symbols constituting the reading order, any one code symbol holds predetermined holding information to be output,
The reading means further reads the holding information when the code symbol includes the holding information;
The code reading device according to any one of claims 1 to 3, wherein the output unit outputs the holding information when the determination unit determines that the reading unit has read the predetermined order. Each of the series of code symbols constituting the reading order holds divided holding information obtained by dividing predetermined holding information to be output,
The reading means further reads the division holding information from the code symbol,
The code reading device according to any one of claims 1 to 3, wherein the output unit outputs the holding information restored from the divided holding information when the determining unit determines that the reading is performed in the predetermined order. . Code reader computer
Reading means for reading the current rank information from a code symbol holding at least current rank information representing a rank related to reading of its own code symbol;
Determination means for determining whether the code symbols are read in a predetermined order based on the current order information read from the plurality of code symbols by the reading means;
An output means for outputting information read from any or all of the plurality of code symbols when the determination means determines that the read in the predetermined order;
A program to function as.

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