JPS6016550B2 - Lock release signal sending method - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a method for sending out a unlocking signal for a card having certain information recorded thereon. It has a stored control section, and a lock release signal is sent only when the information on the card matches the information from the control section.

In storage rooms, rooms, buildings, etc. where secrecy is required, only specific persons may be allowed to open, close, enter and exit, and be assigned to handle the storage.

For such specific persons, a certain type of information is conventionally recorded on the identification card, and the record of the card is read into the control unit to determine whether there is a match or not. A method is adopted in which the lock is released only when the lock is released. However, whereas the conventional method uses multiple cards, the memory section provided in the control section that stores different information contents for each card is a core memory or semiconductor memory that stores cards within a single package. It is used that stores a large amount of information for each
Therefore, when an accident such as the loss of a card occurs, extremely complicated operations are required, such as replacing the entire memory section or invalidating the information in the memory that corresponds to the information recorded on the lost card. If the device is already installed, a lot of time and effort must be spent on removing it.

Furthermore, when a core memory or a semiconductor memory is used as the means for comparing the information on the card and the information from the memory side as described above, there is a disadvantage that the reading means becomes considerably complicated and the device becomes large.

Therefore, an object of the present invention is to make it possible to read out information in a memory section by a simple means, thereby making it possible to downsize the device. Another object of the present invention is to enable, in the event that a card is lost, the information in the memory corresponding to the information on the card to be quickly invalidated or replaced without requiring complicated operations. .

The present invention will be described below with reference to illustrated embodiments. In FIG. 1, 1 is a reading device for information recorded on a card 2. As shown in FIG. As shown in detail in FIG. 2, the card 2 has four columns of recording media 2a to 2d with information writing devices arranged in four rows in each column, and further includes a signal medium 2e for transmitting a clock signal. The weight of each column is set to 1000th place, 100th place, 10th place, and 1st place, and furthermore, it is made to be readable by BCD code. Now, assuming that the part marked with an x is the information recorded on this card, each storage medium 2a~
2d represents 1, 2, 5, and 8 in this order. In addition,
Card 2 is made of laminated plastic plates, etc.
The recording media 2a to 2d are arranged inside, and the information described above is recorded separately for each card, and is not visible from the outer surface. When the card 2 is inserted, the reading device 1 sends out the following signals from its output terminals la to lf.

That is, the information recorded on the card is sent out sequentially for each column from the output terminals la to ld, and the information on the recording medium 2a is sent to the output terminal la, the information on 2b is sent to lb, and the information on 2c is sent to l.
In c, the information of 2d appears in ld. On the other hand, output terminal l
The terminal e is for sending a clear signal, and the output terminal lf is for sending a clock signal. FIG. 3 is a waveform diagram of output signals sent from each terminal of the reading device 1. 3 is a data selection device, and the card 2 read by the reading device 1
It has the function of converting the information into a signal that can be compared with a signal from a memory section, which will be explained later, and is composed of 4-bit shift registers 3A to 3D and a multiplexer 38.

That is, the BCD of the reading device 1 is stored in the shift register 3A.
The 1000th place data of the code signal is sent out, the 100th place data is sent to the shift register 3B, the 10th place data is sent to the shift register 3C, and the 1st place data is sent to the shift register 3D. The clock signal from terminal lf is sent to multiplexer 3E. On the other hand, the multiplexer 3E receives a command signal from an address setting circuit, which will be described later, and sends data of each shift register to its output terminals 3f to 3i. Therefore, in this embodiment, the information recorded on the card 2 is divided into four BCD code signals for each column by the data selection device and sent out sequentially.

Reference numeral 4 denotes a detection circuit for detecting the completion of reading of the card 2, and in this embodiment, it generates a pulse output when four clock pulses are detected.

5 is a binary counter which is cleared by the pulse output of the detection circuit 4, and is set so that an inverted output inverting from 1'' to 0'' appears at its output terminal n+2.

6 is a ring counter, always a binary counter 5
It is held in the OFF state by the n+2 output, and is driven by the previous inverted output 0'' to generate the pulse output shown in FIG.

The output from the output terminal 6c of the ring counter 6 is supplied to the clock terminal of the binary counter 5, while the binary counter 5 sends out a binary code signal to the output terminals 5a to n+1 according to the counted number.

When this counting operation progresses and an output 1'' appears at the output terminal n+2 at the end of the binary counter 5, that output acts on the ring counter 6 to stop its operation, and a pulse output is sent from the detection circuit 4 again to clear the counter. In other words, the binary counter 5 counts the output of the ring counter 6, and the period until the output appears at the terminal output terminal is determined by the signal appearing at each output terminal of the data selection device 3 and the memory. This is the verification time for matching/mismatching with the data recorded in the section.

Furthermore, the multiplexer 38 of the data selection device 3 described above transmits the address setting signal from the first and second output terminals 5a, 5b of the binary counter 5 via the address setting circuit 7 formed by a decoder. On the other hand, the binary counter 5
The output terminals 5a and 5b of the initial level 0"0" to 0"
Since an output that repeats 1'', 1''0'', 1''1'' appears, the output terminals 7a to 7d of the address setting circuit 7 sequentially change to 0''0'' and output terminal 7a to 1'', 0'' according to the input. 1″
So 7b is 1″, 1″0″ is 7c, 1″1″ is 7d
1" will appear repeatedly. Therefore, by setting this address, the shift register 3A is output to the output terminals 3f to 3i of the data select device.
, 3B, 3C, and 30 are sent out in sequence.

Note that in this embodiment, the output terminal 7 of the address setting circuit 7
Each of the outputs a to 7d is set to correspond to shift registers 3A to 3D in sequence. For example, output terminal 7
The output of a corresponds to the shift register 3A, and by specifying this address, the information of the shift register 3A is sent to the output terminals 3f~
Appears in 3i. 8 is a decoder for converting the binary code signal of the binary counter 5;

Therefore, these output terminals 8a to 8d...n, n+1, n
At 12 and n+3, outputs appear sequentially from the output terminals 8a to n+3 every time the binary counter 5 performs a counting operation. Reference numeral 9 denotes a memory unit, which is composed of a plurality of independent information recording media 9a...9n, each having an input mode corresponding to the number of columns of the corresponding card, and each input terminal is an output terminal of the decoder 8. connected to,
The output signals of the decoder 8 are sequentially sent from the information storage medium 9a to the information storage medium 9n.

Note that the memory unit 9 is composed of a plurality of information recording media on which information corresponding to different information recorded on each card is recorded. There is an information recording medium that stores information. The reason why the memory section 9 is composed of a plurality of independent information recording media is to allow each individual to change or destroy the recorded contents. It is possible to effectively deal with such cases.

An example of the information recording medium constituting the memory section 9 is one composed of a diode matrix circuit using a read-only memory (generally referred to as ROM), as shown in detail in FIG. Here, one information recording medium is formed with four terminals. Therefore, if the information recording medium 9a has the content shown in FIG. 0'', and when the operation of the decoder 8 progresses and an output appears at the output terminal 8c, Ra and Rc become 1'', and Rb and Rd become 0.
''.In this way, the output of the decoder 8 appears sequentially on its output terminals, so the recorded content of each terminal of the information recording medium connected to the output terminal becomes a BCD code signal and is sequentially sent out. A comparator compares the output from the data selection device 3 and the output from the memory section 9, and sends out the output only when the two outputs match.

That is, the data selection device 3 sequentially sends the information recorded on the card 2 for each column to the comparator 10 as a BCD code signal, while the memory section 9 similarly sends out the information recorded on each information recording medium to the comparator 10. Since the signal is sent out as a terminal 8CD code signal, the two are compared here. At this time, if there is no information recording medium in the memory section 9 that matches the information recorded on the card, the output of the comparator 10 will of course not be obtained. As is clear from the above description, the information in the memory section to be sent to the comparator 10 only needs to be changed sequentially to the output signals of the decoder, so the configuration can be extremely simple.

11 has the function of holding the output sent by the comparison operation of the comparator 10 until the comparison operation is completed, and the output of the output terminal 6a of the ring counter 6 and the output terminal 7a of the address setting circuit 7. Cleared by logic output with output, output terminal 6 of ring counter 6
The configuration is such that the output of the comparator 10 is read at the output of b.

Therefore, the clear signal is sent out at the same time as the start of the ring counter 6, so there is no inconvenience that the previous data remains, and the output from the comparator 10 is ensured by the output from the output terminal 6b of the ring counter 6. It will be loaded into.

Reference numeral 12 denotes a gate for sending out a lock release signal, etc., which sends out an output only when an output appears at all of the output terminals of the register 11.

Next, the effect will be explained. To simplify the explanation,
It is assumed that the information shown in FIG. 2 is recorded on the card 2, and the information recording medium 9a of the memory section 9 has recorded contents shown in FIG.

Now, when the card 2 is inserted into the reading device 1, this is detected and a clear signal is sent from the output terminal le, and each shift register 3A, 3B of the data selection device 3,
Clear 3C and 30.

Outputs from the recording medium of each column of the card 2 appear from the output terminals la to ld, and are sent to the shift registers in response to a clock signal from the output terminal lf. The information on the recording medium 2a of the card 2 is sent to the shift register 3A, the information on the card 2b is sent to the shift register 3B, the information on the card 2c is sent to the shift register 3C, and the information on the card 2d is sent to the shift register 30. On the other hand, when the above operation is completed, the detection circuit 4 generates a pulse output that clears the binary counter 5.
The output terminal n12 at the end of is inverted to 0'', releases the holding of the ring counter 6, and the ring counter 6 starts, and the binary counter 5 also starts starting due to this world power.

At this time, the output terminal 7a of the address setting circuit 7 becomes 1'', so the information in the shift register 3A is transferred to the multiplexer 3E.
are supplied to the output terminals 3f to 3i.

Note that the output status at this time is 1" at the output terminal 3f and 0" at the other terminals. Also, in the memory section, the output state 8a of the decoder 8
Since an output is generated at the output terminal Ra of the information recording medium 9a
only 1'' will appear and will be sent to the comparator 10.

In this case, since the output of the data selection device 3 and the output of the memory section match, an output is generated in the comparator 10 and stored in the shift register 11.

With the above operations, the confirmation of the contents of the first column of the card 2, that is, the shift register 3A, is completed. Next, 1'' appears at the output terminal 7b of the address setting circuit 7 by the output of the ring counter 6, so the shift register 3B
information is sent to the comparator 10, and in the memory section, an output appears at the output terminal 8b of the decoder 8, so only Rb becomes 1'', and the output from the comparator 10
will be sent to. As a result, an output appears on the comparator 10 and is stored in the register 11. Similarly, according to the information of the shift register 3C, the output terminals 3f and 3h appear as 1'', and in the memory section, the output terminals Ra and Rc of the information recording medium 9a become 1'', so the comparator 10
The output of is obtained and stored in the register 11. Also, according to the information of the shift register 30, only the output terminal 3i becomes 1'', and as for the output of the information recording medium 9a of the memory section, only the output terminal Rd thereof becomes 1'', so the output of the comparator 10' appears and the shift register 11 is memorized.

Therefore, an output is supplied to all the input terminals of the gate 12, and thereby a lock release signal is supplied.

The operation of the ring counter 6 progresses and the output terminal n+2 of the binary counter 5 becomes 1''.
Holding it off will stop its operation.

In the previous operation description, the information recording medium 9a of the memory section 9 is connected to the first to fourth output terminals 8 of the decoder 8.
Although we have explained the case where the connection is made to a to 8d, the effect is the same regardless of the position. For example, even if it is located at the end, the above operation is repeated for each information recording medium and the comparator 10 sequentially checks the information recording medium. The operation will proceed as the situation progresses.

Furthermore, even if a card that does not exist in the memory section 9 is used, all the information is confirmed by the comparator, so no release signal will appear at the gate 12.

As is clear from the above explanation, the first invention sends the information recorded on the card to the comparator for each column,
On the other hand, the memory section sequentially sends information for each column of the plurality of information recording media that constitute this memory section to a comparator, and the comparator compares the two, and only when they match, sends out a release signal for locking, etc. This ensures that the information on the card and the information from the memory section are compared and verified, and if all the information does not match, a release signal for locking etc. will not be sent out, which increases reliability. It can be made to have a high value.

In particular, in the first invention, the information retrieval operation of the memory section is performed by sequentially switching the output of the decoder. Because it is simple and has the effect of reducing the size of the device, it also allows the information recording medium that makes up the memory section to be replaced independently.
In the event that a card is lost or an unnecessary card is generated, the information recording medium corresponding to the card can be removed, thereby eliminating inconveniences such as theft.

Furthermore, even if you add a new card, you only need to add the information storage medium that supports the card, so in such cases, you can replace the entire memory part like semiconductor memory. There are no inconveniences such as the need for complicated operations to add or store new information in the semiconductor memory.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram showing an embodiment of the method of the present invention, Fig. 2 is a schematic front view of a card, Fig. 3 is an output waveform diagram of the card reading device, Fig. 4 is an output waveform diagram of the ring counter,
FIG. 5 is an example of an information recording medium in the memory section. 1: Reading device, 2: Card, 3: Data selection device, 3A to 3D: Shift register, 3E: Multiplexer, 4: Detection circuit, 5: Binary counter, 6: Ring counter, 7: Address setting circuit, 8: decoder,
9: Memory section, 9a, 9n: Information recording medium. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1 A card with recorded information is read by a reading sensor, and the read information is divided into signals for each column by a data selection device and sequentially sent to a comparator, while the information stored in advance in the memory section is counted from a counter. As a result of the output, a decoder output is obtained which sends an output from an output terminal corresponding to the count number, and signals are sequentially sent to a comparator for each column, and in the comparator, the card information signal sent from the data selection device and the In the signal sending method, the information signal sent out from the memory section is compared for each column, and when both information signals match, a lock release signal is sent out. The information recording medium is connected between the output terminal of the decoder and the comparator in a removable state, and is connected in accordance with the count number. A method for transmitting a lock release signal, characterized in that information on a plurality of information recording media is sequentially transmitted to a comparator by obtaining a signal from a decoder outputted by a decoder.