JPH0716200Y2 - Memory card read / write device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a memory card read / write device for reading and writing data in a memory card having a memory therein.

[Conventional technology]

2. Description of the Related Art Conventionally, a merchandise delivery system has been considered in which merchandise catalog data and order data are exchanged using a memory card as a medium, and merchandise ordered by a subscriber is delivered from a merchandise supplier to each subscriber.

FIG. 6 is an explanatory diagram showing an outline of the above-described product delivery system. The illustrated merchandise delivery system is a system in which a merchandise supplier 10 such as an agricultural cooperative receives an order for merchandise from a plurality of subscribers 11, and a delivery person 12 delivers the ordered merchandise to each subscriber 11 home. In this system, a product storage box 11a is installed in each subscriber 11, for example, at the eaves, so that the subscriber 11 can receive an order for a product or deliver the product even if the subscriber 11 is absent.

The subscriber memory card 2 in which each subscriber 11 writes the order data regarding the ordered product in the product storage box 11a
When the product is delivered, the deliveryman 12 reads the order data from the subscriber memory card 2 when delivering the product, and writes the product catalog data for the next order into the same subscriber memory card 2 and the product together with the product. It is designed to be placed in the storage box 11a. To this end, each subscriber 11
And each delivery member 12 is a memory card read / write device
Possess 13 or 14 respectively.

The memory card reading / writing device 13 possessed by each subscriber 11 reads the product catalog data from the subscriber memory card 2 and gives the product information to the subscriber 11, and the subscriber reads the product catalog data based on the product information. Used by the subscriber 11 to write order data to the subscriber memory card 2.
On the other hand, the memory card reading / writing device 1 owned by the delivery person 12 is desired to read the product catalog data from the delivery person memory card 1 owned by each delivery person 12 or to read the order data from the subscriber memory card 2. Besides, it is used to write a large number of order data read from the subscriber memory card 2 into the deliveryman memory card 1.

The writing of product catalog data to the deliveryman memory card 1 and the reading of order data from the deliveryman memory card 1 are for collecting order data and forming product catalog data in the office of the product supplier 10. Is performed by the computer 10a provided in the.

Memory card reading / writing device 1 carried by each delivery member 12 If desired, a memory card insertion hole 14a,
A data input unit 14b such as a numeric keypad, an output unit 14c such as a printer, and a display 14d are arranged, and a CPU and a memory are provided therein. Further, the memory card reading / writing device 13 possessed by the subscriber 11 has a memory card insertion hole 13a, a data input portion 13b such as a numeric keypad and a display 13c on the surface thereof, and a CPU and a memory provided inside thereof. ing.

The deliveryman memory card 1 possessed by the deliveryman 12 has a writable / readable volatile memory and a backup power supply for backing up the memory in the deliveryman memory card 1, which includes the product catalog data. Other, each delivery staff
The above-mentioned order data for the subscribers 12 are stored. On the other hand, the subscriber memory card 2 possessed by each subscriber 11 has a writable / readable non-volatile memory therein, which includes a subscriber identification code, a product name, a product code, a unit price, etc. The product catalog data and order data such as the desired product code to be used for ordering, the number of ordered products, and the total amount are stored.

The delivery person memory card 1 requires a larger memory capacity than the subscriber memory card 2 because order data for a large number of subscribers is stored therein. Therefore, the deliveryman memory card 1 generally has a relatively large memory capacity,
A non-volatile memory that has a built-in backup power supply for backing up the memory contents is used. On the other hand, the subscriber memory card 2 may store the data ordered by the subscriber and the product catalog data.
A non-volatile memory having a relatively small memory capacity and requiring a backup power supply is used.

The outline of the above-mentioned home delivery system is as follows.

(1) Order of goods by subscriber The subscriber 11 inserts his / her subscriber memory card 2 into the card insertion hole 13a of the memory card reading / writing device 13 possessed by the subscriber 11, and the subscriber's memory card 2 starts the product catalog. The data is read, the product information based on the read product catalog data is displayed on the display 13c, and the subscriber 11 operates the input unit 13b to input the desired product code or the like to the data while viewing the display. Then, the order data is written and stored in the memory of the subscriber memory card 2. At this time, the information input by the data input unit 13b is displayed on the display 13c. The subscriber memory card 2 in which the order data is written in this way is placed in the product storage box 11a before the delivery member 12 comes to deliver the product.

(2) Delivery and ordering by the delivery person When the delivery person 12 goes home to deliver the item to the subscriber 11,
Computer 10 in the memory card 1 of the delivery staff
Write the product catalog data created by a. Then, the deliveryman memory card 1 in which the product catalog data has been written is inserted into the card insertion hole 14a of the memory card reading / writing device 14 possessed by himself, and the product catalog data is written in the internal memory.

The delivery member 12 who has delivered the product to the home stores the product in the product delivery box 11a of the subscriber 11 and also stores the product storage box 11a of each subscriber 11.
The subscriber memory card 2 stored in the subscriber memory card 2 is taken out and inserted into the card insertion hole 14a of the memory card reading / writing device 14 possessed by the subscriber, and the order data stored in the subscriber memory card 2 is read. The order data thus read is stored in the memory of the printer 14 and is ejected by the printer 14c. The order form on which the order data is printed is put in the product storage box 11a together with the subscriber memory card 2 so that the subscriber 11 knows that the order has been received.

When all the designated subscribers 11 have been delivered to the home, the deliveryman 12 inserts his / her deliveryman memory card 1 into the card insertion hole 14a of his / her memory card reading / writing device 14, and the memory in the device 14 is stored. The order data stored in 1 is read out to the deliveryman memory card 1.

The order data read in the memory cards of all the delivery members is aggregated by the computer 10a and is used for creating order data.

[Problems to be Solved by the Invention]

The subscriber memory card 2 used in the above-described system has different address data and data terminal arrangement format from the deliveryman memory card, and therefore, when performing read / write processing of data through a common interface. The operator had to previously insert a terminal array format suitable for each memory card into the card insertion hole to read and write data.

Therefore, when using a different type of memory card,
The operator must perform the format setting each time. Also, if this setting is incorrect, data cannot be read from or written in the desired memory card.

Therefore, it is an object of the present invention to provide a memory card read / write device that automatically disables reading and writing of data according to the memory cards of different types.

[Means for Solving the Problems]

The memory card reading / writing device according to the present invention for solving the above problems is used only for backing up the volatile memory 1a and the memory 1a as shown in the basic configuration diagram of FIG. A first memory card 1 having a backup power supply 1b and operating power supplied from the outside, or a second memory card 2 having an internal non-volatile memory 2a supplied from the outside In the memory card read / write device, which comprises a connecting means (32), one of which is selectively connected, and which reads and writes data to the memory cards (1, 2) connected to the connecting means (32). Power supply means V for supplying the operation power to the memory cards 1 and 2 connected to 32
cc and a terminal T _1BB connected to the backup power supply 1b in the first memory card connected to the connection means 32
Connected to the terminal T _1BB by monitoring the voltage of the terminal T _1BB
A backup power supply detection means 3b for detecting whether or not the memory cards 1 and 2 connected to 32 have the backup power supply 1b, and the backup power supply detection means 3b connects the connection means 32 to the first memory card 1 When the connection is detected, the read and write processing is performed according to the first memory card 1, and the backup power supply detecting means 3b connects the second memory card 2 to the connecting means 32. And a data read / write unit 3c that performs the read and write processing according to the second memory card 2 when the data is detected.

[Action]

In the above configuration, the volatile memory 1a and the backup power supply 1b used to back up the memory 1a are used.
One of the first memory card 1a having and the second memory card 2 having the non-volatile memory 2a therein is a connecting means.
The memory card 1 or 2 connected to the connecting means 32 is selectively connected to the power supplying means V.
cc supplies operating power from outside.

The backup power supply detection means 3b connected to the terminal T _1BB connected to the backup power supply 1b in the first memory card 1 connected to the connection means 32 is connected to the connection means 32 by monitoring the voltage of the terminal T _1BB. It is detected whether the memory cards 1 and 2 have the backup power source 1b. The data read / write means 3a, when the backup power supply detection means 3b detects that the first memory card 1 is connected,
When the backup power supply detecting means 3b detects that the second memory card 2 is connected by performing the reading and writing processing according to the first memory card 1, the reading and writing according to the second memory card 2 Perform processing.

Therefore, by simply connecting the memory cards 1 and 2 to the connecting means 32 commonly used for the first and second memory cards 1 and 2, the card type is automatically determined and the song data is stored in the card type. Read and write processing can be performed.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram showing an embodiment of a memory card read / write device according to the present invention. In FIG. 2, the memory card aftermath / write device 3 is a CPU3.
0, format conversion interface 31, connector 3
2. The card insertion detection interface 34, the A / D converter triplet and the switch SW are provided, and the connector 32 has a plurality of terminals T _1n , T _1CC , T _1I and T _1BB . The connector 32 is
For example, it is provided in the card insertion hole 14a of the read / write device 14 of the home delivery system.

The CPU 30 outputs address data to the address bus B ₁ and inputs / outputs data via the data bus B ₂ . Each of the buses B ₁ and B ₂ is connected to the format conversion interface 31. Further, CPU 30 is (hereinafter referred to R / W bus) read / write control bus outputs a read control signal and a write control signal to B _3.

The format conversion interface 31 is a connector
Connected to 32. The card insertion detection interface 34 is connected to the terminal T _{1I of the} connector 32, and the output of the card insertion detection interface 34 is input to the CPU 10.
An A / D converter 35 is connected to the terminal T _{1BB of the} connector 32, and the A / D converter 35 converts the output from the terminal T _1BB into a digital signal and inputs it to the CPU 10. Also, switch S
W is connected to the operating power supply Vcc and the terminal T _{1CC of the} connector 32,
An on / off control signal for the switch SW is output from the CPU 30.

FIG. 3 shows the configuration of the deliveryman memory card 1, in which the volatile memory 1a such as STATIC-RAM (S-RAM),
A backup power supply 1b, an address decoder 1c, and an input / output control circuit 1d are provided, and T _2CC , T _2A , T _2D , and
_Equipped with T _RWB , T _2I , and T _2BB .

The address data and data are supplied to the terminals T _2A and T _2D of the deliveryman memory card 1, respectively, and the address data and data are supplied to the address decoder 1c and the input / output control circuit.
Input and output to 1d respectively. A read / write control signal is supplied to the terminal T _2RW of the deliveryman memory card 1 from the R / W bus B ₃ , and this after- _completion / write control signal is input to the input / output control circuit 17. The terminal T _2I of the deliveryman memory card 1 is connected to the ground potential in the memory card 1. Further, the terminal T _2BB of the deliveryman memory card 1 is connected to the backup power source 1b, and the operating power source Vcc is supplied to the terminal T _2CC .

FIG. 4 shows the structure of the subscriber memory card 2, in which the ERASABLE AND ELECTRICALLY PEPRIGRAMMBLE-ROM is installed.
(E ² -PROM) non-volatile memory 2a, address decoder 2b, I / O control circuit 2c, T _2CC as an external terminal,
It is equipped with T _2A , T _2D , T _2RW , and T _2BB . Subscriber memory card 2
The address data and the data are supplied to the terminals T _2A and T _2D of the address decoder and the address data and the data are supplied to the address decoder.
Input and output to and from the input / output control circuit 2c and 2b, respectively. The R / W bus B is _connected to the terminal T _2RW of the subscriber memory card 2.
A read / write control signal is supplied from ₃ and is input to the input / output control circuit 2c. Terminal T of subscriber memory card 2
_2I is connected to the ground potential in the memory card 2. Similarly, the terminal T _{2BB is} also connected to the ground potential, and the operating power supply Vcc is supplied to the terminal T _2CC .

The terminal array formats of the address data terminals T _2A and the data terminals T _2D of the memory cards 1 and 2 are different from each other as shown in FIGS. 3 and 4, respectively.
T _2CC , the terminal connected to the card insertion interface 34
The T _2I and the terminal T _2BB for detecting the backup power supply have a common terminal arrangement format for the quantity memory cards 1 and 2.

An outline of the operation of the above configuration will be described. connector
Insert memory card 1 or 2 into 32 and _connect to terminal T _1I
T _2I , T _1CC and T _2CC , T _1BB and T _2BB are connected to each other. Therefore, first, the card insertion detection interface 34 detects that the memory card 1 or 2 is inserted and outputs the detection signal to the CPU 30. The card insertion detection interface 34 is composed of, for example, a switch circuit, which outputs an H-level signal when the memory cards 1 and 2 are not inserted, and activates the switch circuit when the memory cards 1 and 2 are inserted to set the L level. Operates to output a level signal. When this detection signal is input, the CPU 30 subsequently inputs the digital output from the A / D converter 35.

Since the voltage appearing at the terminal T _2BB of the memory card 1 or 2 is input to the A / D converter 35, the memory card 1
Is inserted, the backup power supply V _BB is output to the terminal T _2BB , and if the memory card 2 is inserted, the ground potential is output. Therefore, the A / D converter 35
The memory card 1 outputs a signal obtained by digitally converting the backup power supply V _BB , and the memory card 2 outputs a signal obtained by digitally converting the ground potential, that is, a signal having a digital value of zero. As a result, the CPU 30 knows which of the memory cards 1 and 2 is currently inserted in the connector 32, and outputs a memory card discrimination signal to the format conversion interface 31.

Next, output a control signal from the CPU 30 to the switch SW,
The switch SW is turned on to supply the operating power supply V _CC to the terminal T _2CC via the terminal T _1CC . Memory cards 1 and 2 have terminals T _2CC
When the power supply V _CC is supplied to the device, the device is in an operating state, and it becomes possible to read and write data with respect to the memory 1a or 2a.

Therefore, the CPU 30 sends the address data to the address bus B ₁ and inputs the address data to the format conversion interface 31. Further, a read or write control signal is output to the R / W bus B ₃ and input to the interface 31. Further, the data is sent to the data bus B ₂ , and the data is input to the interface 31. When the memory card discrimination signal is input from the CPU 30, the format conversion interface 31 outputs address data and data and a read / write control signal from the R / W bus B ₃ to terminals T _2A and T _2D corresponding to each memory card. , Output to the terminal T _{1n of the} connector 32 connected to T _2RW . As a result, the terminals T _2A , T _2D and T _2RW of the memory card 1 or 2 are connected to the address bus B ₁ , the data bus B ₂ and the R / W bus B ₃ , respectively.

Therefore, the address data from the terminal T _2A is input to the address decoder 1c or 2b and is decoded by the memory 1a or
Specify the address of 2a. _Further , a read or write control signal from the terminal T _2RW is input to the input / output control circuit 1d or 2c to put the memory 1a or 2a into a read state or a write state.

When the read control signal is output, the data of the memory 1a or 2a stored at the address designated by the address data is read through the input / output control circuit 1d or 2c and output to the terminal T _2D . When the write control signal is output, the data is output from the terminal T _2D to the memory 1 or 2 through the input / output control circuit 1d or 2c, and the data is written to the address designated by the address data. Memorize

From the above, in data read / write processing, CP
Since U30 has already discriminated the memory cards 1 and 2 based on the output of the A / D converter 35, it outputs the address data of the format corresponding to each memory card, and is output from the memory 1a or 2a during the reading process. Input the data of the format according to each memory, and send the data to the CPU3.
It is converted so that 0 can be processed, and predetermined processing such as input / output processing and arithmetic processing is performed. Further, at the time of the writing process, the data of the format corresponding to the memory 1a or 2a is output and written in the memory 1a or 2a.

Next, the work performed by the CPU 30 in the above configuration will be described with reference to the flowchart of FIG.

First, in step S1, the output of the card insertion detection interface 34 is read, and then in step S2, it is determined whether or not the memory card 1 or 2 is inserted into the connector 32. If it is inserted, the process proceeds to step S3 and the data of the A / D converter 35 is input. The memory card 1 is connected to the A / D converter 35 via the terminal T _1BB of the connector 32.
Alternatively, the voltage appearing at the terminal T _2BB of 2 is input.

Therefore, in step S4 following step S3, if the voltage A / D converter V _BB is detected by the output of the A / D converter 35, the backup power supply 1b and the volatile memory (S-RAM) 1a are connected to the connector 32. It is determined that the memory card 1 including and is inserted. If the voltage V _BB is not detected, it is determined that the memory card 2 incorporating the non-volatile memory (E ^2U PSROM) 2a having no backup power supply is inserted.

When it is determined in step S4 that the memory card 1 is inserted, the process proceeds to step S5, the power switch SW is turned on, and the power supply voltage V _CC is _supplied to the terminal T _{2CC of the} memory card 1 via the terminal T _{1CC of the} connector 32. Supply to. As a result, the memory card 1 becomes operational. Next, in step S6, data read and write processing according to the format of the volatile memory 1a is performed on the volatile memory 1a.

That is, in the reading process, first, a signal for identifying the memory card 1 is output to the interface 31. Next, the address data is output to the address bus B ₁ . The outputs a read control signal to the R / W bus B _3. The address data is a format conversion interface
Connector 3 connected to terminal T _2A of memory card 1 at 31
Is input to the second terminal T _1n. Similarly the read control signal is also input to the terminal T _2RW, further data bus B ₂ connector 3 connected to the terminal T _2D is the address data terminal T _2A
When it is input through, it is decoded and the address of the memory 1a designated by the decoded address data is accessed. The read control signal is input to the input / output control circuit 1d, and the input / output control circuit 1d causes the memory 1a to be read.
To the read state. Then, the data stored at the accessed address is read out, and the input / output control circuit
It is output to the data bus B ₂ via the terminals T _2D and T _1n and the format conversion interface 31. The CPU 30 reads the data output through the data bus B ₂ and performs predetermined arithmetic processing and input / output processing. In the above-described product delivery system, for example, the above process reads out the product catalog data from the memory card 1 and uses this as the device 3
This is the process of writing to the internal memory of.

In the writing process, the CPU 30 also outputs a signal for identifying the memory card 1 to the interface 31,
Address bus B ₁ , data bus B ₂ and R / W bus B ₃ and terminals
T _2A, T _2D, connecting the T _2RW. Next, the address data is output to the address bus B ₁ and input to the address decoder 1c through the format conversion interface 31 and the terminals T _1n and T _2A . The address decoder 1c decodes the address data as described above and accesses the designated address of the memory 1a. Along with this, a write control signal is output to the R / W bus B ₃ and input to the input / output control circuit 1d through the format conversion interface 31. The input / output control circuit 1d puts the memory 1a in a write state. Further, the CPU 30 outputs predetermined data to the data bus B ₂ and inputs it to the input / output control circuit 1d through the format conversion interface 31. Data is written to the designated address of the master 1a through the input / output control circuit 1d. The above processing is, for example, in the product delivery system described above, when the order data of the subscriber written in the internal memory of the device 3 is written in the deliveryman memory card 1.

When it is detected in step S4 that the subscriber memory card 2 is inserted, the process proceeds to step S7, and the power switch SW is turned on to supply the power supply voltage V _CC to the memory card 2 as in step S4. , This is the operating state. Next, in step S8, for the nonvolatile memory 2a,
Data reading and writing processing according to the format of the memory 2a is performed.

First, in the reading process, a signal for identifying the memory card 2 is output to the format conversion interface 31.

Next, the address signal is output to the address bus B ₁ . Further, it outputs a read control signal to the R / W bus B _3. The address data is input to the terminal T _1n of the connector 32 connected to the terminal T _2A of the memory card 2 by the format conversion interface 31. Similarly, the read control signal is also input to the terminal T _2RW , the data bus B ₂ is also input to the terminal T _2RW , and the data bus B ₂ is further coupled to the terminal T _{1n of the} connector 32 connected to the terminal T _2D . When the address data is input through the terminal T _{2A, the} address data 2b decodes the address data and accesses the address of the memory 2a designated by the address data.

Further, the read control signal is input to the input / output control circuit 2c,
The input / output control circuit 2c puts the memory 2a into a read state. Then, the data stored at this accessed address is read out and output in parallel to the input / output control circuit 2c,
From there, it is sent to the data bus B ₂ via the terminals T _2D , T _1n and the format conversion interface 31. CPU30 reads the data outputted through the data bus B _2,
Performs predetermined arithmetic processing and input / output processing.

For example, the above-described process is a process in which the subscriber reads the order data from the subscriber memory card 2 in the commodity delivery system, writes the order data in the internal memory of the device 3, and stores the order data.

In the writing process, first, the CPU 30 outputs a signal for discriminating the memory card 2 to the format conversion interface 31, and the address bus B ₁ , the data bus B ₂ and the R / W.
The bus B ₃ is connected to the terminals T _2A , T _2D and T _2RW . Next, an address signal is output to the address bus B ₁ and input to the address decoder 2b through the format conversion interface 31, terminals T _1n and T _2A . The address decoder 2b decodes the address data as described above, and accesses the designated address of the memory 2a. The same time outputs a write control signal to the R / W bus B _3, and inputs to the output control circuit 2c through format conversion interface 31. The input / output control circuit 2c puts the memory 2a in the write state. Further, the CPU 30 outputs predetermined data to the data bus B ₂ , and the format conversion interface 31
Through the input / output control circuit 2c. Data is written in the designated dress through the input / output control circuit 2c.

The above processing is performed, for example, when the product catalog data stored in the internal memory of the device 3 is written to the subscriber memory card 2 in the product delivery system.

[Effect] As described above, according to the present invention, even if a memory card whose memory is to be backed up and a memory card that is not so are connected to a common connecting means, the presence or absence of the voltage of the memory backup power supply. Since the card type is determined by detecting the, the data read and write processing can be automatically performed according to the card type.

Therefore, it is not necessary for the operator to perform the troublesome operation of setting the format according to each memory card every time the data reading and writing processing is performed, and the reading and writing processing according to each memory card can be performed. You can definitely do it.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a memory card reading / writing device according to the present invention, FIG. 2 is a block diagram showing an embodiment of the device according to the present invention, and FIGS. 3 and 4 are in FIG. FIG. 5 is a diagram showing a configuration example of a memory card of FIG. 5, FIG. 5 is a flow chart showing the work performed by the CPU in FIG. 2, and FIG. 6 is a diagram showing a commodity delivery system to which the device according to the present invention is applied. . 1 ... Deliveryman memory card (first memory card), 1a ...
Volatile memory 1a, 1b ... Backup power supply 1b, 2 ... Subscriber memory card (second memory card), 2a ... Non-volatile memory, 3 ... Memory card read / write device, 3a ...
Backup power supply detection means (A / D converter 35), 3b ...
Data read / write means (CPU30), 32 ... Connector (connection means), _T1BB ... Terminal, V _CC ... Power supply means.

Claims (1)

[Scope of utility model registration request] 1. A first memory card having a volatile memory inside and a backup power supply used only for backing up the memory, and an operating power supply supplied from the outside, or a non-volatile memory inside. And a connection means for selectively connecting one of the second memory cards to which operating power is externally supplied, and data read / write processing for the memory card connected to the connection means. In the memory card reading / writing device for performing the above, the power supply means for supplying the operating power to the memory card connected to the connecting means, and the backup power supply in the first memory card connected to the connecting means The memory card connected to the terminal connected to the connection means is connected to the connecting means by monitoring the voltage of the terminal. Backup power supply detecting means for detecting whether or not it has; and when the backup power supply detecting means detects that the first memory card is connected to the connecting means, the reading and reading according to the first memory card When the write processing is performed and the backup power supply detecting means detects that the second memory card is connected to the connecting means, data reading / writing for performing the read and write processing according to the second memory card A memory card reading / writing device comprising: a writing unit.