JPH0135290Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic card reader that can check for abnormalities in data recorded on a magnetic card.

Conventionally, as shown in FIG.
The magnetic card 1 is manually moved while one end is brought into contact with the card guide reference surface 2a formed on the guide member 2 having a U-shaped cross section, and the data recorded on the magnetic card 1 is transferred using the magnetic head 3. There is a magnetic card reader that reads the card.

In this type of magnetic card reader, since the magnetic card 1 is manually run, the end of the magnetic card is often separated from the reference surface 2a while the magnetic card 1 is running, and the magnetic stripe of the magnetic card 1 is not formed. There are disadvantages in that the magnetic recording portions formed are inclined with respect to the magnetic stripe, resulting in so-called skew, and the magnetic recording portions are not formed at predetermined positions within the magnetic stripe, resulting in so-called track deviation.

As described above, when data is reproduced by the magnetic head 3 using the magnetic card 1 having data recording abnormalities such as skew or track deviation, the data is not read correctly by the magnetic head 3, causing a reproduction error. .

In order to improve this drawback, conventionally, a reproducing magnetic head having a cap portion narrower than the width of the gap portion of the magnetic head 3 for recording data has been used to prevent some data recording abnormalities from occurring on the magnetic card. Even in such cases, this defect is corrected so that the data recorded on the magnetic card 1 can be correctly reproduced. In other words, the gap of the magnetic head for reading data is prevented from intersecting a plurality of adjacent magnetization inversion parts.

However, a reproducing magnetic head having a cap width narrower than the width of the cap portion of the magnetic head 3 for recording data, in other words, a magnetic head having a cap width narrower than the width of the data recording portion is used. When reproducing the data of the magnetic card 1 with a recording error, the data of the magnetic card 1 with the recording error must be corrected and read by force, so depending on the type of magnetic card reader, the conditions may be even worse. There were cases where data could not be played back correctly due to incompatibility.

The present invention has been developed in view of the above-mentioned drawbacks, and an object of the present invention is to provide a magnetic card reader that can detect magnetic cards with recording abnormalities such as skew and track deviation.

The principle of the present invention is based on the fact that when the magnetic card 1 is not run along the card guide reference surface 2a formed on the guide member 2, the same running state as this running state is almost never realized again. It is based on

The feature of the present invention is that a magnetic head capable of recording and reproducing is provided on a guide member having a U-shaped cross section and a card guide reference surface, and information is recorded by sliding a magnetic card against the magnetic head. With,
In a manual magnetic card reader having a gap section narrower than the recording width of the information, when reading information, the recorded information is reproduced using the narrow gap section, and when checking for recording abnormality, Using the above recordable/reproducible magnetic head,
The main feature is that the information is read in the same track width as the recorded information and a recording abnormality check is performed.

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

In FIG. 2, reference numeral 4 denotes a magnetic head for reproduction only, and the width of the cap portion 4a of this magnetic head 4 is as follows.
Even if there is a recording error on magnetic card 1,
In order to correct this recording abnormality and read the data correctly, the width is made narrower than the recording width of the data recorded on the magnetic stripe. Adjacent to the magnetic head 4, a magnetic head 5 for both recording and reproduction is provided for detecting recording abnormalities such as skew and track deviation in the magnetic card 1. In order to reliably detect recording abnormalities such as skew and track deviation, the width of the cap portion 5a of the magnetic head 5 is set to be the same width as the recording width of data recorded on the magnetic stripe, that is, the width of the cap portion 5a of the magnetic head 4 is set to the same width as the recording width of data recorded on the magnetic stripe. It's made wider.

Attenuators 6 and 7 for adjusting reproduction output are connected to both magnetic heads 4 and 5, respectively.

Further, in order to perform reproduction on either the magnetic head 4 or the magnetic head 5, reproduction state switching switches 8 and 9 are provided on each attenuator 6 and 7, respectively. An amplifier 10 for recording input is connected between the magnetic head 5 and the attenuator 7 so that the magnetic head 5 can also be used for recording. Note that recording input to the magnetic head 5 is performed via a memory circuit 11.

The reproduction output of the magnetic head 4 or the magnetic head 5 is input to the reproduction amplifier 12 by switching the switches 8 and 9.

13 checks whether there is any recording abnormality in the magnetic card 1 recorded by the magnetic head 5;
This is a check circuit that outputs a recording abnormality when there is a recording abnormality in the magnetic card 1, and the check circuit 13 is configured to receive a recording input signal corresponding to data recorded in the memory 11 and a reproduction output signal corresponding to the data. There is.

The operation of the device according to the present invention will be explained below.

(b) When recording data on a magnetic card.

switch 8 for turning on and off the playback output signal;
9 are both turned off, the magnetic card 1 is run along the reference surface 2a of the guide member 2, and a recording input signal corresponding to the data is input to the magnetic head 5 via the memory 11 and amplifier 10. Then, data is recorded on the magnetic card 1.

(b) When checking whether there are any recording abnormalities such as skew or track deviation on the magnetic card 1.

A switch 8 provided on the side of the reproducing magnetic head 4
is turned off, turn on the switch 9 on the side of the magnetic head 5 for both recording and reproduction, cut off the recording input signal, and then place the magnetic card 1 on the reference surface 2a.
run along. As a result, the data recorded on the magnetic card 1 is reproduced by the magnetic head 5.

Here, if the magnetic card 1 has a recording abnormality such as skew or track deviation,
Based on the fact that when the vehicle does not travel correctly along the reference surface 2a, the same traveling state as this one is almost never realized again, the recorded data and the reproduced data are A discrepancy arises between them. Therefore, the check circuit 13 confirms the mismatch between the data signal from the memory 11 and the data signal from the magnetic head 5, and generates a recording abnormality signal.
It is possible to determine whether there is a recording abnormality in the data recorded on the magnetic card 1.

In addition, if you take measures to make the data to be recorded and input visible in advance by printing, etc., if the data reproduced and output by the magnetic head 5 is reproduced and displayed, it is possible to visually check for data discrepancies. In this case, the memory 11 and check circuit 13 are unnecessary.

Furthermore, even if there is no skew or track deviation in the magnetic card 1, when reproducing data, there may be a discrepancy between the recorded data and the reproduced data depending on the way the magnetic card 1 is run. In this case, an inconvenience arises in that the magnetic card 1 is judged to have a recording abnormality such as skew or track deviation even though there is no skew or track deviation in the magnetic card 1.
However, the state in which the magnetic card 1 is correctly run along the reference surface 2a formed on the guide member 2 is almost the same as this running state when the magnetic card 1 is not run correctly. Despite the fact that there is no such thing, it is easy to realize because there is a reference plane. Therefore, the inconvenience of being judged to have a recording abnormality such as skew or track deviation even though there is no skew or track deviation on the magnetic card 1 can be avoided by running the magnetic card 1 again and confirming that the data match. It will be resolved.

(c) When you want the magnetic card reader to be versatile and to correctly reproduce recorded data even if the magnetic card has some recording abnormality such as skew or track deviation.

Turn off the switch 9 on the side of the magnetic head 5,
Turn on the switch 8 on the side of the magnetic head 4,
The magnetic card 1 is run along the reference surface 2a.

In this case, the data recorded on the magnetic card 1 is reproduced using the magnetic head 4 having the cap portion 4a narrower than the data width.
Even if the magnetic card 1 has some recording abnormality such as track deviation or skew, this recording abnormality is corrected and the data is read as correct data.

Note that if the magnetic card reader is used only for recording data and checking for recording abnormalities, the magnetic head 4 exclusively for reproduction is not necessary.

Furthermore, the attenuators 6 and 7 are connected to the magnetic heads 4 and 5.
It is more practical to provide the attenuators 6 and 7, although they are unnecessary when adjusting the playback output.

Since the present invention is constructed as described above, it has become possible to check for recording abnormalities in magnetic cards with recording abnormalities such as skew and track deviation.

In addition, as an effect of the embodiment, since a magnetic head having a cap portion narrower than the width of the data recording portion is provided in parallel to the magnetic head for both recording and reproducing, the magnetic card reader has versatility. It became possible to do so.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a state in which a magnetic card is brought into contact with a guide member of a conventional magnetic card reader, FIG. 2 is a plan view showing a state in which a magnetic head according to the present invention is attached to a guide member, and FIG. The figure is a circuit diagram of a magnetic head according to the present invention. 1... Magnetic card, 2... Guide member, 3...
Conventional magnetic head for reproduction, 4...Magnetic head for reproduction according to the present invention, 5...Magnetic head for both recording and reproduction according to the present invention, 6, 7... Attenuator, 8,
9...Switch.

Claims (1)

[Scope of utility model registration request] A wide magnetic head capable of recording and reproducing is provided on a guide member having a U-shaped cross section and a card guide reference surface, and a magnetic card is slidably run on the magnetic head to record information, and the recording width of the information is In a manual magnetic card reader equipped with a magnetic head having a narrower gap, when reading information, the recorded information is reproduced by the magnetic head having a narrower gap, and when checking for recording abnormalities, A manual magnetic card reader, characterized in that it uses the wide recording/reproducing magnetic head described above to read information in the same track width as the recorded information and check for recording abnormalities.