JP2636226B2 - Recording medium reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] A reading unit reads a card recording medium and outputs read data and recording medium identification data, so that a data processing unit reads a data format of each medium based on the identification data. Can be applied to the read data, so that the device operator does not need to specify the type of the card recording medium to be read, or the host device transfers the control information for the read data process to the data processing unit. No need. Therefore, it is possible to reduce the labor and time of handling the apparatus and improve the processing performance of the recording medium reading apparatus.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium reading device, and more particularly to a recording medium reading device capable of reading a plurality of types of card recording media.

In recent years, various card recording media have been used in various fields for recording customer codes, personal identification numbers, and the like. In particular, magnetic cards such as cash cards, credit cards, and other ID (Identification) cards of bank online systems have been used in an increasingly wide range of fields. Since magnetic cards have different data formats, different bit lengths of codes, etc., depending on the type, conventionally, a dedicated reader is provided for each type of card, or a reader capable of reading a plurality of types of cards is provided. A method has been used in which the operator specifies the type of the magnetic card. Therefore, there is a demand for a recording medium reading apparatus which can read a plurality of types of magnetic cards and does not require the trouble of an apparatus operator.

[Conventional technology]

FIG. 3 is a block diagram showing a conventional example. The same reference numerals indicate the same objects throughout the drawings.

In the figure, a magnetic card reader 1a includes a JIS II standard card (number of tracks: 1, data format: 7 data bits + 1 parity bit) and a JIS I standard card (number of tracks: 3,
This is a magnetic card reader capable of reading the track 2 of data format: 4 data bits + 1 parity bit).

The data processing unit 2a has a function of performing processing such as serial-parallel conversion of bit-serial read data from the magnetic card reader 1a and transferring the data to a host device 6 described later.

The host device 6 is a control unit such as a terminal. The host device 6 controls each unit to perform the function of the device.
It has a function of reading the magnetic card from the magnetic card reader 1a by controlling 2a.

The control information register 21a has a function of receiving, from the host device 6, control information such as a magnetic card type to be read and the number of bits constituting a code necessary for processing read data from the magnetic card reader 1a, and storing the control information. .

The selector 22a has a function of selecting and inputting data from a JIS I or JIS II standard card based on the magnetic card type indicated by the control information register 21a.

The conversion processing unit 23a has a function of detecting a start code from the bit serial data selected by the selector 22a, converting the subsequent serial data into parallel data of a specified number of bits, and transferring the parallel data to the host device 6.

Therefore, the serial data read by the magnetic card reader 1a is selectively input by the selector 22a based on the control information set in the control information register 21a from the host device 6, and the conversion processing unit 23a starts from the serial data. It is configured to detect and synchronize a code, convert a subsequent bit string into parallel data of a predetermined number of bits, and transfer the parallel data to the host device 6.

[Problems to be solved by the invention]

As described above, according to the conventional method, only one type (or one track) of data can be read by one reading operation, and the device operator specifies the type of the magnetic card to be used by operating the host device 6. Has to create read control information and set it in the control information register 21a, which is troublesome and time-consuming.

[Means for solving the problem]

 FIG. 1 is a block diagram showing the principle of the present invention.

In the figure, reference numeral 1 denotes a reading unit for reading data unique to the owner recorded on each track of a plurality of types of card recording media and identification data {instruction data / input permission signal} for identifying the card recording medium; A predetermined process (for example, a process of converting serial data into parallel data) is selectively and parallelly performed on each data unique to the owner based on the identification data {instruction data / input permission signal} from No. 1. It is a data processing unit.

Therefore, the predetermined processing is selectively and in parallel performed on a plurality of read data based on the medium identification data {instruction data / input permission signal}.

[Action]

According to the present invention, since the reading unit 1 outputs the identification data of the medium in addition to the read data read from the card recording medium, the data processing unit 2 can perform necessary processing based on the identification data. This eliminates the need for the device operator to specify the type of medium or the transfer of control information required for processing read data from a host device.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIG. The same reference numerals indicate the same objects throughout the drawings. First in FIG.
Those corresponding to the figures are surrounded by alternate long and short dash lines.

FIG. 1 shows an example of a magnetic card reader capable of reading four types of magnetic card data, that is, tracks 1, 2, and 3 of a JIS II standard card and a JIS I standard card.

In the figure, a magnetic card reader 1b is a reading device that can read the above four types of magnetic card data at a time.

The instructing unit 11 instructs the type of magnetic card data that can be read by the magnetic card reader 1b by setting with a switch circuit or the like. In the example, the type is indicated by 4 bits corresponding to the above four types of magnetic card data.

The instruction input unit 22b inputs and holds the instruction data from the instruction unit 11, and outputs a read data input permission signal to later-described conversion processing units 23b to 23e based on the instruction.

Each of the conversion processing units 23b to 23e has a function of inputting data based on the input permission signal and performing processing on the read data in accordance with each data format. For example, the conversion processing unit 23b gates the read data in response to an input permission signal from the instruction input unit 22b, and if there is input data, samples the bit-serial data using a sampling pulse that is input together, and samples the bits. Extract. Next, synchronization is established by detecting a start code (hexadecimal FF) from the extracted bits, and subsequently input serial data is assembled into 8-bit parallel data, parity check is performed, and a buffer 24b to be described later is checked. Transfer to

The buffers 24b to 24e are, for example, five-stage, first-in, first-out (FIFO) registers for accumulating the parallel data assembled by the conversion processing units 23b to 23e.

The status register 25 is a register for storing state information indicating that the assembled parallel data is accumulated (buffer full) for each of the buffers 24b to 24e and that a parity error is detected by the conversion processing units 23b to 23e. And a function for issuing an interrupt request to the host device 6 when these states occur.

Having such a configuration and function, the procedure of a magnetic card reading operation will be described. When a magnetic card is inserted by an apparatus operator, the magnetic card reader 1b reads card data of a plurality of tracks of the magnetic card at once. The read data is output, and the instruction unit 11
Outputs the type of magnetic card data that can be read by the magnetic card reader 1b as instruction data.

The instruction input unit 22b inputs and holds the instruction data from the instruction unit 11, and outputs an input permission signal to the corresponding conversion processing units 23b to 23e.

The conversion processing units 23b to 23e gate each read data according to the input permission signal, and sample and extract bits. A start code of a predetermined bit pattern is detected from the extracted bits to establish code unit synchronization. The parallel data of a predetermined bit length is assembled from the subsequent bit string, a parity check is performed, and if an error occurs, status information is set in the status register 25.
Transfer to b-24e.

Buffers 24b to 24e sequentially input parallel data,
Shift to the subsequent stage, and set the buffer full state information in the stator register 25.

When an interrupt factor such as a buffer full or an error is set, the status register 25 issues an interrupt request to the host device 6.

When the host device 6 detects the cause of the buffer full interruption by the interruption process, the data of the magnetic card is read into the host device 6 by reading the data from the corresponding buffers 24b to 24e.

Therefore, by operating the circuit section relating to the type of the magnetic card data that has been read, it is possible to automatically read the magnetic card data without having to transfer the read data processing control information from the host device 6. is there.

According to the configuration of the present embodiment, four sets of circuit units can operate independently, so that a magnetic card in which a plurality of, for example, four types of data are recorded on one card can be read by one operation. It is possible.

Also, if the type of the magnetic card that is currently being read is instructed from the magnetic card reader 1b and the read data is processed based on this, it is possible to read one type of data at a time with one set of circuit units. is there.

〔The invention's effect〕

As described above, according to the present invention, there is no need to specify the type of medium by the device operator or to transfer the control information for reading data processing from the host device, thereby reducing the time and effort of the device operator. In addition to this, there is an effect that it is possible to improve the processing performance of the recording medium reading apparatus without causing an operation error of specifying the medium type.

Further, all the read card data is stored in a buffer, and which data the host device goes to is left to the host, so that the host does not needlessly operate and is effective.

[Brief description of the drawings]

 FIG. 1 is a block diagram showing the principle of the present invention, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a block diagram showing a conventional example. In the figure, 1 is a reading unit, 1a and 1b are magnetic card readers, 2 and 2a are data processing units, 6 is a host device, 11 is an instruction unit, 21a is a control information register, 22a is a selector, 22b is an instruction input unit, Reference numerals 23a and 23b to 23e denote conversion processing units, 24b to 24e denote buffers, and 25 denotes a status register.

Claims (1)

(57) [Claims] 1. A recording medium reading device for reading card data recorded on one or more tracks provided on a plurality of types of card recording media, comprising: a plurality of reading units corresponding to each of the plurality of tracks; An instruction unit for outputting instruction data indicating a card data type that can be read by the recording medium reading device; and card data recorded on the plurality of tracks, each of which corresponds to a data format and is read by each of the reading units. A plurality of conversion processing units that perform conversion processing on data; and a plurality of buffers that are provided corresponding to the plurality of conversion processing units and store the converted data, respectively. Reading the card data at a time, and performing the conversion processing corresponding to the card data type specified by the instruction data among the plurality of conversion processing units By converts processing the card data, a recording medium reading apparatus characterized by storing in the buffer.