Abstract:
An apparatus of reading identification information according to a code attached on a biosensor. In reading the identification information through a pattern of the existing biosensor, a photodetector and a light resource are required for each segment so as to read segments of each pattern. However, such a system may cause a complexity of circuit-driving, raise manufacturing costs, and prolong operating hours. Thus, to solve these problems, provided is a technology, which, in contrast to the existing technology, has advantages of using a small amount of electronic components and reduced driving circuits to shorten working hours, and the like.

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
       [0001]    This application claims the benefit under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2013-0047617, filed on Apr. 29, 2013, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. 
       BACKGROUND 
       [0002]    1. Field 
         [0003]    The following description relates to a technology for measuring biometric data, and more specifically, to a technology for reading identification information recorded depending on a color on a surface of the biosensor. 
         [0004]    2. Description of the Related Art 
         [0005]    There are some devices for measuring biometric data using a disposable biosensor. Here, the biosensor, e.g. a strip of a blood glucose measuring device, may have different characteristics for each product lot number. Also, in the existing devices, correction code information for correcting such characteristics is recorded on a surface of the biosensor depending on the arrangement of colors. The existing device for measuring biometric data, which reads the arrangement of colors, disposes light sources and light detectors at a one-to-one ratio for each segment that makes arrangement patterns. Such existing devices have problems of complicating a circuit and increasing its cost of production, among others. 
         [0006]    Korean Patent No. 10-1224600 (filed on May 9, 2011, and registered on Jan. 15, 2013) discloses a bio-chip detector. However, this application uses motors to detect information of a plurality of bio-chips (biosensors) and includes a rotation axis and a board, which are both disposed, thus resulting in the large scale and difficulty to carry it around. 
       SUMMARY 
       [0007]    In reading identification information through a pattern of the existing biosensor, a photodetector and a light resource are required for each segment so as to read the segments of each pattern. Such a system has not only caused a complexity of driving circuits, but it has also raised manufacturing costs, and prolonged operating hours. 
         [0008]    The following description relates to a technology for reading biosensor identification information which, in contrast to the existing technology, uses a smaller amount of photodetectors than light resources, thus simplifying driver circuits and decreasing the amount of work and time needed. 
         [0009]    In one general aspect, an apparatus of reading identification information includes: a light receiver; a plurality of light emitters, which are located corresponding to and facing a plurality of segments on a surface of the biosensor, and which are arranged around the light receiver; an identification code reader configured to sequentially turn on/off the plurality of light emitters according to each position thereof and read the light receiver to decipher/decode color information recorded on the segment which corresponds to and faces a position of the light emitter which has been turned on. 
         [0010]    The light receiver may include a plurality of photodetectors, each of which is connected in series or in parallel to each other, and which are capable of being simultaneously operated in entirety thereof by the identification code reader. 
         [0011]    The plurality of light emitters may include a plurality of light emitting elements, which are simultaneously operated by the identification code reader. 
         [0012]    The identification code reader may be configured to turn on/off the plurality of light emitters by alternating between horizontal and vertical directions. 
         [0013]    The apparatus may include a plurality of sets of reader modules including the light receiver, the plurality of light emitters, and the identification code reader. 
         [0014]    The identification code reader may include: a light emitter driver connected to each of the plurality of light emitters; a light receiver driver configured to drive the light receiver; a converter configured to convert an output of the light receiver to a digital format; and a pattern reader configured to read a pattern of an identification information code of the biosensor from an output of the converter. 
         [0015]    In another general aspect, a method for reading identification information of a biosensor, wherein the identification information is recorded according to an arrangement of different colors on a plurality of segments on a surface of the biosensor, includes: a) detecting an insertion of the biosensor; b) turning on one of a plurality of light emitters arranged in a position corresponding to and facing segments on the surface of the biosensor which has been inserted while turning off the rest; c) detecting a light which has been projected from the light emitter and reflected from or penetrated through the biosensor; d) reading, through the detected light, a code recorded in a position corresponding to the plurality of segments on the surface of the biosensor which has been inserted; and e) reading identification information by repeating operations b) to d) with respect to the plurality of light emitters located in different positions, and by reading the codes of all the segments. 
         [0016]    The operation e) may include turning on/off the plurality of light emitters by alternating between horizontal and vertical directions. 
         [0017]    Other features and aspects may be apparent from the following detailed description, the drawings, and the claims. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]      FIG. 1  is a diagram illustrating an example of an apparatus of reading identification information according to an exemplary embodiment. 
           [0019]      FIG. 2  is a diagram illustrating an example of an identification code reader according to an exemplary embodiment. 
           [0020]      FIG. 3  is a diagram illustrating an example of an operation of an apparatus of reading identification information according to an exemplary embodiment. 
           [0021]      FIG. 4  is a diagram illustrating another example of an operation of an apparatus of reading identification information according to an exemplary embodiment. 
           [0022]      FIG. 5  is a diagram illustrating yet another example of an operation of an apparatus of reading identification information according to an exemplary embodiment. 
           [0023]      FIG. 6  is a schematic diagram illustrating an example of an apparatus of reading identification information according to an exemplary embodiment. 
           [0024]      FIG. 7  is another schematic diagram illustrating an example of an apparatus of reading identification information according to an exemplary embodiment. 
           [0025]      FIG. 8  is a flowchart illustrating an example of a method for reading identification information according to an exemplary embodiment. 
       
    
    
       [0026]    Throughout the drawings and the detailed description, unless otherwise described, the same drawing reference numerals will be understood to refer to the same elements, features, and structures. The relative size and depiction of these elements may be exaggerated for clarity, illustration, and convenience. 
       DETAILED DESCRIPTION 
       [0027]    The following description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses, and/or systems described herein. Accordingly, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be suggested to those of ordinary skill in the art. Also, descriptions of well-known functions and constructions may be omitted for increased clarity and conciseness. 
         [0028]      FIG. 1  is a diagram illustrating an example of an apparatus of reading identification information according to an exemplary embodiment. 
         [0029]    As illustrated in  FIG. 1 , the apparatus of reading identification information includes a light receiver  120 ; a plurality of light emitters  110  whose position corresponds to and faces a plurality of segments on a surface of a biosensor inserted and are disposed around the light receiver  120 ; and an identification code reader  130  that sequentially turns on/off the plurality of the light emitters  110  according to position thereof and then reads the light receiver  120  to read the color information recorded on the segments which correspond to and face the position of the light emitters  110  which has been turned on. 
         [0030]    The light receiver  120  may include a plurality of photodetectors connected in series or in parallel to each other, which are capable of being simultaneously operated in entirety thereof by the identification code reader  130 . 
         [0031]    In an exemplary embodiment, the light receiver  120  may be a single element. In another exemplary embodiment, the light receiver  120  may include a plurality of light receivers, which are capable of being implemented in one single driving circuit. 
         [0032]    The light emitter  110  may include a plurality of light emitting elements, which are capable of being simultaneously operated) by the identification code reader  130 . In an exemplary embodiment, a light emitting diode (LED) may be used as the light emitter  110 . 
         [0033]    The identification code reader  130  may be implemented to turn on/off the plurality of the light emitters  110  by alternating between horizontal and vertical directions 
         [0034]    In an exemplary embodiment, the apparatus of reading identification information may include a plurality of sets of reader modules that include a light receiver  120 , a plurality of light emitters  110 , and an identification code reader  130 . 
         [0035]    In another exemplary embodiment, the apparatus may include the plurality of reader modules which, in contrast with the existing technology, use the minimum amount of components while being able to accommodate several biosensors. 
         [0036]      FIG. 2  is a diagram illustrating an example of an identification code reader according to an exemplary embodiment. 
         [0037]    An identification code reader  130  may include a light emitter driver  210 ; a light receiver driver  220  that drives a light receiver; a converter  230  that converts an output of the light receiver into a digital format; and a pattern reader  240  that reads a pattern of an identification information code of a biosensor from the output of the converter  230 . 
         [0038]    The light emitter driver  210  may drive a light emitter  110  and enable the light emitter  110  to irradiate light on a side where an identification information code is attached. 
         [0039]    The light receiver driver  220  may enable a light receiver  120  to detect the light which has been generated by the light emitter  110 . 
         [0040]    The converter  230  may convert the pattern of the identification information code to a digital format and enable the following pattern reader  240  to analyze the code pattern. 
         [0041]    The pattern reader  240  may read information of the pattern, which has been converted to a digital format by the converter  230 , and detect the pattern of the identification information code of the biosensor. 
         [0042]    The detailed description about operations of the apparatus according to an exemplary embodiment will be described later in reference to  FIGS. 6 and 7 . 
         [0043]      FIG. 3  is a diagram illustrating an example of an operation of an apparatus of reading identification information according to an exemplary embodiment. 
         [0044]    In an exemplary embodiment, if a biosensor  310  which includes an identification information code, as illustrated in  FIG. 3 , is inserted into an apparatus of reading identification information, the apparatus may, for purpose of identifying the identification information code, initially operate the? first light emitters  321  to generate light; operate a light receiver  330 ; and enable the light receiver  330  to detect the light, which has been generated by the first light emitters  321  and reflected from one side of the biosensor  310 . Then, the apparatus may operate second light emitters  322  to generate light, operate the light receiver  330 , and enable the light receiver  330  to detect the light reflected from the biosensor  310 . 
         [0045]    In another exemplary embodiment, the light emitters  321  and  322  may be grouped horizontally, not longitudinally as illustrated in  FIG. 3 . 
         [0046]    The detailed description about operations of the apparatus according to an exemplary embodiment will be described later in reference to  FIGS. 6 and 7 . 
         [0047]      FIG. 4  is a diagram illustrating another example of an operation of an apparatus of reading identification information according to an exemplary embodiment. 
         [0048]    In an exemplary embodiment, if a biosensor  410 , which includes an identification information code attached thereon as illustrated in  FIG. 4 , is inserted into an apparatus of reading identification information, the apparatus may, for the purpose of identifying the identification information code, initially operate first light emitters  421  to generate light; operate a light receiver  440 ; and enable the light receiver  440  to detect the light, which has been generated by the first light emitters  421  and reflected from one side of the biosensor  410 . Then, the apparatus may operate second light emitters  422  to generate light; operate light receivers  440  and  450 ; and enable the light receivers  440  and  450  to detect the light, which has been reflected from the biosensor  410 . Then, the apparatus may operate third light emitters  423  to generate light; operate the light receiver  450 ; and enable the light receiver  450  to detect the light, which has been reflected from the biosensor  410 . The light receivers  440  and  450  are electrically connected to each other and may be implemented in one single driving circuit. By these operations, the apparatus may read a pattern of the identification information code, which is included on one side of the biosensor  410 . 
         [0049]    The detailed description about operations of the apparatus according to an exemplary embodiment will be described later in reference to  FIGS. 6 and 7 . 
         [0050]      FIG. 5  is a diagram illustrating yet another example of an operation of an apparatus of reading identification information according to an exemplary embodiment. 
         [0051]    In an exemplary embodiment, if a biosensor  510 , which includes an identification information code attached thereon as illustrated in  FIG. 5 , is inserted into an apparatus of reading identification information, the apparatus may, for the purpose of identifying the identification information code, initially operate first light emitters  521  to generate light; operate a light receiver  530 ; and enable the light receiver  530  to detect the light, which has been generated by the first light emitters  521  and reflected from one side of the biosensor  510 . Then, the apparatus may operate second light emitters  522  to generate light; operate the light receiver  530 ; and enable the light receiver  530  to detect the light, which has been reflected from the biosensor  510 . Then, the apparatus may re-operate the second light emitters  522  to generate light; operate a light receiver  540 ; and enable the light receiver  540  to detect the light, which has been reflected from the biosensor  510 . At last, the apparatus may operate third light emitters  523  to generate light; operate the light receiver  540 ; and enable the light receiver  540  to detect the light, which has been reflected from the biosensor  510 . The light receivers  530  and  540  are electrically connected to each other and may be implemented in one single driving circuit. 
         [0052]    The pattern of the identification information code is not limited to the exemplary embodiments described above in  FIGS. 3 to 5 . Also, various patterns besides the description above may be attached on one side of the biosensor, and the number of the light emitters or light receivers may be readily changed as necessary. 
         [0053]    The detailed description about operations of the apparatus according to an exemplary embodiment will be described later in reference to  FIGS. 6 and 7 . 
         [0054]      FIG. 6  is a schematic diagram illustrating an example of an apparatus of reading identification information according to an exemplary embodiment. 
         [0055]    An apparatus of reading identification information is described in detail according to a schematic diagram of circuits as illustrated in  FIG. 6 . To read a pattern of the biosensor, a driver controller  660  may initially issue an operation instruction to a light emitter driver  610 . The light emitter driver  610  may include a first driver  611 , a second driver  612 , a third driver  613 , and a fourth driver  614 , each of which controls a light emitter  690 . The light emitter driver  610  may drive the first driver  611  and enable the light emitter, which is connected to the first driver  611 , to generate the light toward the biosensor. Then, if an instruction is transferred to a light receiver driver  620  by the driver controller  660 , the light receiver driver  620  may enable a photodetector of a light receiver  680  to detect the light, which has been reflected from the biosensor. The light information detected from the photodetector of the light receiver  680  may be converted into a digital format by the converter  640 , and the converted light information may be input to a pattern reader  650 . The pattern reader  650  may read the pattern of the converted light information, which has been input by the converter  640 . 
         [0056]    Then, the driver controller  660  may request, again through the light emitter driver  610 , a light emitter to generate light, wherein the light emitter is connected to the second driver  612 , and the light emitter may be operated. The light receiver driver  620  may re-instruct the light receiver  680  to be operated. Light information detected by the light receiver  680  may be transmitted again to the converter  640 , which converts again the light information into a digital format and transfers the converted light information to the pattern reader  650 . 
         [0057]    Then, the driver controller  660  may request, again through the light emitter driver  610 , a light emitter to generate light, wherein the light emitter is connected to the third driver  613 , and the light emitter may be operated. The driver controller  660  may control the light receiver driver  620  and re-instruct the light receiver  680  to be operated. Light information detected by the light receiver  680  may be re-transmitted to the converter  640 , which re-converts the light information into a digital format and transfers the converted light information to the pattern reader  650 . 
         [0058]    Then, the driver controller  660  may request, again through the light emitter driver  610 , a light emitter to generate light, wherein the light emitter is connected to the fourth driver  614 , and the light emitter may be operated. The driver controller  660  may control the light receiver driver  620  and re-instruct the light receiver  680  to be operated. Light information detected by the light receiver  680  may be re-transmitted to the converter  640 , which re-converts the light information to a digital format and transfers the converted light information to the pattern reader  650 . 
         [0059]    By these operations, the pattern reader  650  may read and output the pattern. 
         [0060]      FIG. 7  is another schematic diagram illustrating an example of an apparatus of reading identification information according to an exemplary embodiment. 
         [0061]    An apparatus of reading identification information is described in detail according to a schematic diagram of circuits as illustrated in  FIG. 7 . To read a pattern of the biosensor, a light emitter driver  710  may initially issue an operation instruction to light emitters. The light emitter driver  710  may form the light emitters into a group; and may include a first group driver  711 , a second group driver  712 , and a third group driver  713 , which control the grouped light emitters for each group. The light emitter driver  710  may drive the first group driver  711  and enable the light emitters, which are connected to the first group driver  711 , to generate light toward the biosensor. Then, after a light receiver driver  720  recognizes the information that the light has been generated, the light receiver driver  720  may enable a photodetector of a light receiver  721  to detect the light that has been reflected from the biosensor. Light information detected by the photodetector of the light receiver  721  may be converted into a digital format by a converter  730 , and the converted light information may be input to a pattern reader  740 . The pattern reader  740  may read a pattern of the converted light information, which has been input by the converter  730 . 
         [0062]    Then, the light emitter driver  710  may request each of the light emitters to generate light, wherein the light emitters are connected to the second group driver  712 , and the light emitters may be operated. If the light receiver driver  720  receives a signal of the light that has been generated by the light emitters connected to the second group driver  712 , the light receiver driver  720  may re-instruct the light receiver  721  to be operated. Light information detected by the light receiver  721  may be re-transmitted to the converter  730 , which re-converts the light information into a digital format and transfers the converted light information to the pattern reader  740 . 
         [0063]    Then, the light emitter driver  710  may request again each of the light emitters to generate light, wherein the light emitters are connected to the second group driver  712 , and the light emitters may be operated. If the light receiver driver  720  receives a signal of the light that has been generated by the light emitters connected to the second group driver  712 , the light receiver driver  720  may re-instruct a light receiver  722  to be operated. Light information detected by the light receiver  722  may be re-transmitted to the converter  730 , which re-converts the light information into a digital format and transfers the converted light information to the pattern reader  740 . 
         [0064]    Then, the light emitter driver  710  may request each of the light emitters to generate light, wherein the light emitters are connected to the third group driver  713 , and the light emitters may be operated. If the light receiver driver  720  receives a signal of the light that has been generated by the light emitters connected to the third group driver, the light receiver driver  720  may re-instruct the light receiver  722  to be operated. Light information detected by the light receiver  722  may be re-transmitted to the converter  730 , which re-converts the light information into a digital format and transfers the converted light information to the pattern reader  740 . 
         [0065]    The light receivers  721  and  722  are electrically connected to each other, and may be implemented in one single driving circuit. 
         [0066]    After all of these operations are finished, the apparatus may detect a pattern of an identification information code of a biosensor, and recognize the identification information related to the pattern. 
         [0067]    A composition of the apparatus is not limited to the exemplary embodiments above, and may be added or modified as necessary. 
         [0068]      FIG. 8  is a flowchart illustrating an example of a method for reading identification information according to an exemplary embodiment. 
         [0069]    As illustrated in  FIG. 8 , to read identification information recorded according to an arrangement of different colors on a plurality of segments on a surface of a biosensor, a method for reading identification information may include: a) detecting an insertion of a biosensor in  810 ; b) turning on one of a plurality of light emitters arranged in a position corresponding to and facing segments on the surface of the inserted biosensor, and turning off the rest in  820 ; c) detecting light, which has been projected from a light emitter and reflected from or penetrated through the biosensor in  830 ; d) reading a code recorded in a position corresponding to a plurality of segments on the surface of the inserted biosensor through the detected light in  840 ; and e) reading identification information by repeating operations b) to d) for light emitters located in different positions and reading codes of all segments in  850 . 
         [0070]    In one exemplary embodiment of the operation e), the method may be implemented to turn on/off a plurality of light emitters by alternating between horizontal and vertical directions. 
         [0071]    Compared to the existing technology, the apparatus and method may save resources, reduce the manufacturing costs, and manufacture a small device by using a small amount of read sensors. In addition, driving circuits, particularly in sensing circuits, may be lessened, and several photodetectors are connected in a single circuit resulting in a reduced number of tasks and time needed. 
         [0072]    The methods and/or operations described above may be recorded, stored, or fixed in one or more computer-readable storage media that includes program instructions to be implemented by a computer to cause a processor to execute or perform the program instructions. The media may also include, alone or in combination with the program instructions, data files, data structures, and the like. Examples of computer-readable storage media include magnetic media, such as hard disks, floppy disks, and magnetic tape; optical media such as CD ROM disks and DVDs; magneto-optical media, such as optical disks; and hardware devices that are specially configured to store and perform program instructions, such as read-only memory (ROM), random access memory (RAM), flash memory, and the like. Examples of program instructions include machine code, such as produced by a compiler, and files containing higher level code that may be executed by the computer using an interpreter. The described hardware devices may be configured to act as one or more software modules in order to perform the operations and methods described above, or vice versa. In addition, a computer-readable storage medium may be distributed among computer systems connected through a network and computer-readable codes, or program instructions may be stored and executed in a decentralized manner. 
         [0073]    A number of examples have been described above. Nevertheless, it should be understood that various modifications may be made. For example, suitable results may be achieved if the described techniques are performed in a different order and/or if components in a described system, architecture, device, or circuit are combined in a different manner and/or replaced or supplemented by other components or their equivalents. Accordingly, other implementations are within the scope of the following claims.