JP3636874B2 - Time setting method of contactless card reader in security device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a card reader for reading a contactless IC card used in a security device, and more particularly to a method for correcting the time of a real-time clock in the card reader and a contactless IC card for time correction. is there.
[0002]
[Prior art]
Today, various devices are controlled by a computer such as a microcomputer.
Then, instead of a magnetic card for storing a part of computer data, especially data such as personal information on a magnetic tape, an IC card having a large storage capacity of personal data as a part of computer data has come to be used frequently. I came.
[0003]
This IC card has a thickness of 0.76 mm, a width of 54 mm, and a length of about 58 mm. A small integrated circuit called IC is sealed on a resin plate that is about the size of a business card. It is built into the board.
An IC card that proves the identity of the owner based on the information stored in the IC card is called an ID card, and it is used as a certificate for entering or leaving a specific room or passing through a specific area. is there.
[0004]
Furthermore, in recent years, as an IC card, a contact point is provided on the back surface to exchange data by contacting the reader / writer, as well as using a coil electromagnetic induction to bring the IC card close to the receiving unit of the reader / writer. Some devices that allow data communication in a non-contact state are also used.
Many of these non-contact type IC cards have a thickness of several millimeters and a circular or polygonal shape having a diameter of several centimeters. As shown in FIG. An integrated circuit forming a one-chip memory and a microcomputer 15 is attached to and stored in the circuit board 13, and an antenna coil 16 wound around the circuit board 13 is provided.
[0005]
In addition to the antenna coil 16, a transmission / reception circuit and a power supply circuit are incorporated, and a voltage necessary for the operation of the microcomputer 15 is formed by the power supply circuit by radio waves received by the antenna coil 16, and data from the microcomputer 15 is transmitted by the transmission / reception circuit. Is sent to the antenna coil 16, and data received by the antenna coil 16 is sent to the microcomputer 15.
[0006]
The card reader that communicates with the non-contact type IC card 10 is, for example, a security device 40 combined with an electronic lock 51 as shown in FIG. 6, and the communication unit 43 receives predetermined data from the non-contact type IC card 10. Some devices unlock the electronic lock 51 under the control of the microcomputer 47 when received.
This security device 40 has a communication unit 43, a microcomputer 47, a real time clock 48 and a communication interface 49 as a card reader 41, and performs data communication with the non-contact type IC card 10 by the antenna 44 of the communication unit 43. The received data is sent to the microcomputer 47 via the transmission / reception interface 45, and the received data is analyzed by the microcomputer 47. If the data of the IC card 10 is a predetermined ID, an unlock signal is sent to the electronic lock 51. Is.
[0007]
The electronic lock 51 operates the relay driver 53 in response to the unlocking signal and releases the lock of the electric lock 57 by the relay 55. The security device 40 is a non-contact type IC card 10 in which a specific ID is recorded. The door can be opened when the communication unit 43 is brought close to the communication unit 43.
In the card reader 41, the microcomputer 47 reads the time when the electronic lock 51 is opened from the real-time clock 48, and records the information such as the ID and the unlocking time read when unlocked as unlocking information. The recording information is appropriately transmitted to an external microcomputer via the communication interface 49, and is appropriately transmitted to the host computer via the communication interface 49.
[0008]
[Problems to be solved by the invention]
Many devices such as a security device using this non-contact type IC card do not include an input / output keyboard for setting a microcomputer in the security device.
For this reason, in order to correct the current time stored in the real time clock of the card reader, data must be input from an external computer via a communication interface, and a data collection microcomputer can be connected to the communication interface. The time of the card reader is adjusted by operating this external computer, and there is an inconvenience that it takes time to set the time.
[0009]
[Means for Solving the Problems]
The present invention records a time data and a time correction code on a non-contact type IC card in a non-contact type card reader of a security device that performs data communication with the IC card in a non-contact manner, and records on the non-contact type IC card. The time data and the time correction code thus read are read by the card reader, and the time of the real-time clock is corrected based on the time data read when the time correction code is read.
[0010]
As described above, when the time correction code is stored in the non-contact type IC card and is read by the card reader, the time can be corrected only by bringing the non-contact type IC card close to the receiving antenna of the card reader. .
And since the time data that is the numerical data of the time to be corrected is also stored in the non-contact type IC card, it is only necessary to bring the non-contact type IC card close to the receiving antenna of the card reader when inputting the correct time for correction. Easy data entry is also possible.
[0011]
In the present invention, the time data is set as month data, day data, hour data, and minute data, and the month data, day data, hour data, and minute data are stored in different non-contact type IC cards. The time data is read by a card reader using a plurality of non-contact type IC cards.
As described above, if the time data is distributed and stored in the card, dozens of non-contact type IC cards storing fixed time data are prepared, and the required number of cards are prepared from the dozens of cards. It is easy to select several cards and determine the current time data.
[0012]
In addition, it is easy to make it possible to identify the time correction non-contact type IC card based on data such as the card number of the non-contact type IC card, and to specify and input the type of data. It will be possible.
Further, according to the present invention, a non-contact IC card for storing time data is provided with a switch for setting a numerical value, and a non-contact IC card capable of changing and setting time data at a predetermined time by the switch is set by this switch. The time data may be read by the card reader together with the time correction code.
[0013]
As described above, if the non-contact IC card is used to set the time data value by the switch, it is very easy to input the time data at a predetermined time when the time of the card reader is corrected.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The first embodiment of the contactless IC card of the security device according to the present invention stores time data and a time correction code as data together with data such as a card number.
This time correction code causes the microcomputer 47 built in the card reader 41 to correct the time of the real-time clock 48. That is, the time data read from the non-contact type IC card 10 is set in the real-time clock 48 in the card reader 41 that has exchanged data with the non-contact type IC card 10.
[0015]
As the non-contact type IC card 10 for time correction, as the non-contact type IC card 10 for month data, numerical data from “1” to “12” and type data indicating that the numerical data is monthly data. 12 cards for storing monthly data, and a card for storing numerical data from “0” to “9” and type data indicating that the numerical data is one-digit day data, And 14 cards for date data by a card storing numerical data from “0” to “3” and type data indicating that the numerical data is 10-digit day data, and “0”. To “9” and a card that stores the type data indicating that this numerical data is one-digit hour data, and the numerical data from “0” to “2” and the numerical data are 10-digit hour data Thirteen hour data cards with a card that stores the type data indicating that there is, and the type that indicates that the numeric data from “0” to “9” and the numeric data is one-digit data 16 pieces of data by a card storing data and a card storing numerical data from “0” to “5” and type data indicating that the numerical data is 10-digit data. A total of 55 non-contact type IC cards 10 are prepared.
[0016]
Therefore, when setting the time of the card reader 41 using the non-contact type IC card 10 for time correction, one month data card, two day data cards, two hour data cards, A total of seven of the minute data cards can be selected and read by the card reader 41 to form the correct time data for correcting the real-time clock 48.
[0017]
As the month data card, a card storing numerical data from “0” to “9” and type data indicating that the numerical data is one-digit month data, and “0” and “9” There are cases where 12 non-contact type IC cards 10 each of which is a card that stores numerical data of “1” and type data indicating that the numerical data is 10-digit monthly data are prepared as a monthly data card. .
[0018]
In this case, the month data can be formed by two of the month data cards, and the time data of the correct current time to be corrected can be formed by a total of eight contactless IC cards 10.
Then, these 7 or 8 time-correcting non-contact type IC cards 10 are brought close to the antenna of the card reader 41 to cause the card reader 41 to read the data of the non-contact type IC card 10.
[0019]
As described above, when the non-contact type IC card 10 in which the time data composed of numerical data and type data and the time correction code are recorded is brought close to the card reader 41, the card reader 41, as shown in FIG. When the non-contact type IC card 10 is detected by determining whether or not a card is detected (S101), data from the non-contact type IC card 10 is read (S102), and this data is data for time correction setting. If the time correction code is present in the read data, a normal control process (S120) such as unlocking the electric lock is performed when the IC card 10 for time correction is not used. Is determined to be a non-contact type IC card 10 for time correction and performs time correction processing.
[0020]
In this time correction processing, the numeric data is stored in a predetermined area of the memory while discriminating the digits of the numeric data read by the type data (S111), and it is determined whether or not the 8-digit numeric values are prepared in the required decimal number. While performing (S112), the numerical value of each digit is stored (S111). Then, when the 8-digit numerical values are prepared, this numerical value is preset in the real-time clock 48 to correct the time (S115).
[0021]
Therefore, when seven or eight non-contact type IC cards 10 are brought close to the card reader 41, the time data for the month and date by the combination of the non-contact type IC cards 10 is the real time clock of the card reader 41 as the current time data. Will be set to 48.
Thus, as the data to be recorded on the non-contact type IC card 10, numerical data and type data as time data are recorded instead of personal data of the owner, and the time data and time correction code are recorded. If the non-contact type IC card 10 in which is stored is used, it is very easy to input a time correction code, which is an instruction for the card reader 41 to start a time correction process, and input time data as a numerical value to be corrected. It will be.
[0022]
Further, the non-contact type IC card 10 that stores the time data and the time correction code stores the time data and the time correction code in place of the personal data of the normal non-contact type IC card 10. The non-contact type IC card 10 is very easy to manufacture, and the time can be adjusted very simply by selecting the required seven or eight non-contact type IC cards 10 and holding them over the card reader 41.
[0023]
And when performing this time adjustment, since the microcomputer 47 of the card reader 41 is programmed so that the time adjustment mode is activated when a predetermined time adjustment code is read, it can be carried out very easily. it can.
Note that when programming the microcomputer 47 of the card reader 41, not only the current time data of the real-time clock 48 is rewritten when all 8 digits are complete, but the read-out numerical value is based on the type data. It is possible to write in 48 month counters and day counters, or hour counters and minute counters, and correct only the predetermined digits read.
[0024]
In this way, if only the read digit is corrected, the minute, hour, day, and month data can be individually corrected, and 7 or 8 cards can be selected and used. In addition to the case, when the minute or hour is corrected, the required time correction is made using a predetermined card such as two or four minutes data cards or two minute data cards. It can be carried out.
[0025]
Further, as the non-contact type IC card 10 for time correction, numerical data and type data may be stored, and it may be determined that the time correction non-contact type IC card 10 is based on data such as a card number. That is, when the card number read by the card reader 41 by communication with the time-correcting contactless IC card 10 is a predetermined card number, the microcomputer 47 of the card reader 41 starts time correction processing. The card number is used as the time correction code.
[0026]
Furthermore, the card number is used to determine whether it is a non-contact IC card 10 for time correction, and the numeric digits are also determined based on this card number. The non-contact IC card 10 has a card number and time correction. Only numerical data for use may be stored.
As another embodiment, there is a case where not only the non-contact type IC card 10 that stores fixed numerical time data is used but also the non-contact type IC card 10 that can change the numerical data.
[0027]
In this case, as shown in FIG. 2, the month data card 21 is a card having a switch 31 such as a slide switch for setting a numerical value from 1 to 12, and the day data card 23 is a 10 digit switch 33 and one digit. Similarly, the card having the switch 34, the hour data card 25 and the minute data card 27 are also cards having 10 digit switches 35 and 37 and 1 digit switches 36 and 38, respectively.
[0028]
In the non-contact type IC card 10 provided with such a numerical value setting switch, as shown in FIG. 3, an input / output interface 19 for changing numerical data is incorporated, and the non-contact type IC is provided via the input / output interface 19. The microcomputer 15 in the card 10 is connected to the switch contact group 39 of each switch.
Therefore, as in the conventional case, when the electromagnetic coil of a predetermined frequency is received from the card reader 41 by the antenna coil 16 and the power is supplied by the power supply circuit 18 to operate the microcomputer 15, it is recorded in the memory of the microcomputer 15. Numerical data set by the switch contact group 39 of each switch together with data such as a card number can be read into the microcomputer 15 and transmitted from the antenna coil 16 via the transmission / reception circuit 17.
[0029]
Therefore, this non-contact type IC card 10 needs to be manufactured as a dedicated card, but predetermined numerical data can be easily set by a switch, and numerical values are set near the card reader 41. Data can be read by the card reader 41.
Further, as shown in FIG. 4, the non-contact type IC card 10 that can change the set numerical value includes a 10-digit switch 31 and 1-digit switch 31 for month data, and 10-digit switches 33 and 1 for date data. 8 switches of digit switch 34, 10-digit switch 35 and 1-digit switch 36 for hour data, 10-digit switch 37 and 1-digit switch 38 for minute data, or numerical values 1 to 12 for month data There are cases where seven switches are provided as one switch 31 that can be set, and all data setting of month, day, hour and minute can be performed by one card.
[0030]
When all numerical data is set with one card in this way, this non-contact type IC card 10 stores four, seven or eight card numbers, and each card number and each switch. In some cases, the minute, hour, day, and month numerical data set in accordance with the above are associated with each other.
[0031]
【The invention's effect】
The invention according to claim 1 uses a non-contact IC card in which time data and a time correction code are recorded, and a real-time clock when the time data and the time correction code of the non-contact IC card are read into a card reader. This is a time setting method for a contactless card reader that corrects the time.
[0032]
Accordingly, the time of the card reader can be easily adjusted simply by bringing the non-contact type IC card close to the card reader.
According to the first aspect of the present invention, as time data, month data, day data, hour data, and minute data are stored in different non-contact IC cards, and time is determined using a plurality of non-contact IC cards. This is a time setting method for a contactless card reader that causes the card reader to read data.
[0033]
Accordingly, dozens of non-contact type IC cards having fixed values are prepared as time data, and necessary time data can be formed by a combination of predetermined non-contact type IC cards.
It is also possible to easily set and correct only predetermined data.
According to a second aspect of the present invention, there is provided a time setting method for a non-contact type card reader using a non-contact type IC card in which a switch is provided in the IC card and time data at a predetermined time can be set by the switch.
[0034]
Therefore, it is possible to reduce the number of IC cards to be used, and to set a numerical value near the card reader so that it is very easy to determine the formation of numerical values as time data to be set.
[Brief description of the drawings]
FIG. 1 is a flowchart showing the operation of a card reader.
FIG. 2 is an external view showing an example of a dedicated card used for carrying out the present invention.
FIG. 3 is a diagram showing an example of the structure of a dedicated card used for carrying out the present invention.
FIG. 4 is an external view showing another example of a dedicated card used for carrying out the present invention.
FIG. 5 is a cross-sectional view showing an example of a non-contact IC card.
FIG. 6 is a block diagram showing an example of a card reader.
[Explanation of symbols]
10 Non-contact IIC Card 11 Upper Case 12 Lower Case 13 Circuit Board 15 Microcomputer 16 Antenna Coil 17 Transmitter / Receiver Circuit 18 Power Supply Circuit 19 Input / Output Interface 21 Month Data Card 23 Day Data Card 25 Hour Data Card 27 Minute Data Card 31, 33, 34, 35, 36, 37, 38 Switch 39 Switch contact group 40 Security device 41 Card reader 43 Communication unit 44 Antenna 45 Transmission / reception interface 47 Microcomputer 48 Real time clock 49 Communication interface 51 Electronic lock 53 Relay driver 55 Relay 57 Electric lock

Claims (2)

In a non-contact card reader of a security device that performs data communication with an IC card in a non-contact manner, time data and a time correction code are recorded on the IC card, and the time data includes month data, day data, hour Data and minute data are stored in different non-contact type IC cards, and time data is read into the card reader using the non-contact type IC card. The non -contact type card reader reads the time correction code. A time setting method for a contactless card reader in a security device , wherein the time of the real-time clock is corrected based on the time data. 2. The contactless card in the security device according to claim 1, wherein the IC card is provided with a switch for setting numerical values, and time data corresponding to the setting of the switch is formed and output together with a time correction code. How to set the reader time.

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