JPS63183660A - Magnetic card reader - Google Patents

Abstract

PURPOSE:To reduce the read only time of a microcomputer on the equipment side by storing data of a magnetic card inside and outputting the data corresponding to an external clock. CONSTITUTION:A control circuit 21 being inputted by a clock signal 7 and data output signal 8, detects the beginning of the data from a signal 8, write a reset pulse signal 23 and data output signal 24 to a memory 22 dealing a bit series input and a bit parallel output, outputs a clock signal 23 and also outputs a data ending signal 26 by detecting an end of the data from the signal 8. The memory 22 stores the signal 24 by the signal 25, whereas the readout of the stored data is performed in such a way that the memory receives a readout clock signal 27 from the microcomputer of the data input device by which the signal 26 is detected, and outputs a data signal 28 in parallel to the computer, and this readout timing is synchronized with the signal 27.

Description

[Detailed Description of the Invention] Industrial Fields of Use The present invention is currently applicable to sales management terminals, credit card verification terminals, telephones, membership management terminals using cards,
This relates to magnetic card readers that are used in a wide variety of fields, including security terminals. Most of these magnetic card readers are connected to microcomputers and used as data input devices.
It is thought that its position as a data entry device will continue for some time.

2. Description of the Related Art The functions of a conventional magnetic J-reader will be explained with reference to FIG. In FIG. 2, 1 is a magnetic card, and the magnetic signal encoded on the magnetic card 1 is converted into an electric signal by the magnetic head 2 by sliding the magnetic head 2 in contact with the magnetic card 1. , is amplified by amplifier 3. Then, from the output signal from the amplifier 3, only the necessary components are selected by the filter 4, and the 2
(It is converted into a binary signal by the III! conversion circuit 5. The decoder circuit 6 that receives the output F5 of the 2V1 conversion circuit 5 separates it into a clock signal and a data signal, and outputs the clock signal 7 and data signal. A signal 8 is output.This clock signal 7 is passed through a buffer 9 to a clock pulse output (a
It is output as No. 11. In addition, the Otsuku Buddha number 7 is led to the counter circuit 10 and counted).
The output is completed as 312.

Problems to be Solved by the Invention However, conventional magnetic card readers have output signals that are
Since the clock pulse output signal 11, card detection signal @12, and data output signal 8 are input, the device that inputs the signal outputs the combination of data output signal 8 and clock pulse output signal 11 when the card detection signal 12 is output. In this case, it is necessary to capture the pits serially and identify the data. on the other hand,
Although one purpose of the Micro Combi Coater on the side of the device is to control the own device itself, it is necessary to concentrate on reading the output signal of the magnetic card reader, and it takes a lot of time to read. However, there was a problem in that they had no choice but to place restrictions on their own equipment.

The present invention solves the above-mentioned problems and allows data stored on magnetic cards to be stored inside! The object of the present invention is to provide a magnetic card reader having a function of storing data and outputting data according to an external clock.

Means for Solving the Problems In order to solve the above problems, the present invention reads out the magnetic @ code encoded on the magnetic card as an electrical signal by sliding a magnetic head in contact with the magnetic card. , This signal is amplified by an amplifier circuit, only the necessary signals are extracted by a filter, and converted into two Buddhist symbols by a binarization route, and then -! A decoder circuit separates and extracts the data signal and clock (synchronization) signal from the binary signal.

A magnetic card reader comprising: a control circuit for identifying the start of the data signal and the end of the data signal and outputting the start and end signals; The device is equipped with a memory that outputs stored data in parallel using an external O-k signal.

Effect With the above configuration, the magnetic card reader itself is provided with a control circuit that identifies the start and end of the memory and data that can be read using an external clock, and generates this as a signal.
By storing the data in the memory inside the reader and notifying the end of the data to the microcomputer on the equipment side from the control circuit, the microcomputer on the equipment side reads the data in the memory to the external clock at its own free time (timing). By emitting , the pits can be read out in parallel. In addition, the readout output from the memory is a pit parallel output and not a pit series output, which has many restrictions on the microcomputer on the device side, so it can be connected to the pass line of the microcomputer on the device side. The microcomputer can handle data in the same way as other input devices connected to this path line.

Example Hereinafter, one embodiment of the present invention will be described based on FIG. 11.

FIG. 1 is a functional configuration diagram of a magnetic card reader showing one embodiment of the present invention. Components that are the same as those in the conventional example are given the same reference numerals and explanations will be omitted. In FIG. 1, 21 is a control circuit which receives a clock signal 78 and a data output signal 8, detects the start of data from the data output signal 8, and resets the memory 22 with pit serial input and pit parallel output. At the same time as outputting the pulse signal 23, the data output signal 24 and the related clock signal 25 are output.
It also detects the end of data from the data output signal 8 and outputs a data end signal 28. The memory 22 stores the data output signal 24 in response to the write clock signal 25, and the stored data is read out in response to the read clock signal 21 from the microcomputer (not shown) of the data input device that has detected the data end signal 26. , by outputting data signals 28 in parallel to the microcomputer. The timing of this readout is sent out in synchronization with the readout signal 27.

In this way, the control circuit 21 and the memory 22
By providing the magnetic card 1, the data of the magnetic card 1 can be temporarily stored in the magnetic card reader, and the data can be output to the device in bit parallel fashion in synchronization with an external clock from the device that inputs the data. Furthermore, since the memory 22 has bit-parallel output, it can be connected to the pass lines of the n microcomputers, and the microcomputer can handle the magnetic card reader in the same way as other input devices.

In addition to the effects of the invention, when data on a magnetic card is handled in serial bits as in the past, when a magnetic card is inserted into a magnetic card reader and a clock signal is generated, the micro Computers had to concentrate on reading data from magnetic cards, but as in the present invention, there is a memory that outputs stored data in parallel using an external clock, and a memory that identifies the beginning and end of data and uses this as a signal. A control circuit is provided to generate the magnetic card data, and the data of the magnetic card is temporarily stored in the memory inside the magnetic card reader. Computers can read data from memory in parallel bits using the clock signals they generate. therefore,
1. The read-only time of the device microcomputer is shortened.

2. The microcomputer on the equipment side can read data at a speed commensurate with its own speed.

3. A magnetic card reader can be connected to the pass line of the microcomputer on the side of the device, and can be handled like any other input device.

It is possible to increase the effect of

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram of a magnetic card reader, which is an embodiment of the present invention, and FIG. 2 is a functional block diagram of a conventional magnetic card reader. 1...Magnetic card, 2...Magnetic head, 3...J
platform width device, 4...filter, 5...binarization circuit, 6.
... Decoder circuit, 7... Clock @ number, 8... Data output signal, 21... Control circuit, 23...
-Memory, 24...Data output signal, 25...Write clock signal, 26...Data end signal, 27
...Read clock signal, 28...Data Taiye.

Claims (1)

[Claims] 1. By sliding the magnetic head in contact with the magnetic card, the magnetic signal encoded on the magnetic card is read out as an electrical signal, this signal is amplified by an amplifier circuit, and only the necessary signals are extracted by a filter. ,
A magnetic card reader that converts into a binary signal in a binarization circuit, and separates and extracts a data signal and a clock (synchronization) signal from the binary signal in a decoder circuit,
a control circuit that identifies the start of the data signal and the end of the data signal and outputs it as a start signal and an end signal; and a control circuit that starts storing the data signal based on the start signal and parallelizes the stored data using an external clock signal. A magnetic card reader equipped with a memory that outputs to.