JPH04274060A - Manual type magnetic card reading/writing device - Google Patents

Abstract

PURPOSE:To sufficiently enlarge a region where variable data is written and to diminish a fixed data area for detecting a card speed in the device for writing and reading out the data by manual operation of a magnetic card. CONSTITUTION:A speed computing circuit 12 is constituted to supply the clock demodulated by a demodulating circuit 10 as a writing clock to a writing head control circuit 13 when a magnetic head 7 reads the fixed data area of the magnetic card. The speed computing circuit 12 computes and estimates a card traveling speed and supplies the writing clock to a writing head control circuit 13 when the reading head 7 ends reading for the fixed data area.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual magnetic card reading/writing device for reading and writing data on a magnetic card that is manually operated along a travel guide.

0002

[Prior Art] In a manual magnetic card reading/writing device that reads and writes data to a magnetic card that is manually operated along a running guide, the card speed is adjusted to maintain a constant data recording density on the magnetic card. It is necessary to detect and write data according to the speed.

[0003] Conventionally, as a manual magnetic card reading/writing device for writing data according to such a speed, the one disclosed in Japanese Patent Application Laid-Open No. 2-134772 is known. This records a variable message that records and reproduces variable data on the track of a magnetic card, and an encoded fixed message that is the same length or longer than the variable message.
By reading this encoded unchangeable message, the running speed of the card is determined and the variable message is recorded and reproduced.

0004

However, in this conventional device, the area for recording encoded unchangeable messages occupies approximately half of the track, and as a result, the area for variable messages for recording and reproducing original data is narrow. There was a problem with not being able to write a sufficient amount of data.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a manual magnetic card reading/writing device that can sufficiently enlarge the area in which variable data can be written.

Another object of the present invention is to provide a manual magnetic card reading/writing device in which data written by a writing head can be immediately read and checked by a reading head.

A further object of the present invention is to provide a manual magnetic card reading/writing device that can detect when the magnetic card is running extremely slow or fast.

[0008]

[Means for Solving the Problems] The present invention provides a manual magnetic card reading/writing device for reading and writing data to a magnetic card that is manually operated along a traveling guide. a write head, a read head, and speed calculation means for calculating and estimating the subsequent running speed of the magnetic card based on fixed data read by the read head and outputting a write clock;
A write control means is provided for causing the write head to perform a write operation of variable data in synchronization with the write clock from the speed calculation means.

The present invention also provides a write head provided in the middle of the travel guide, a read head provided behind the write head with respect to the travel direction of the magnetic card,
a data encoding means for encoding the variable data read by the read head; a demodulation circuit for demodulating the fixed data read by the read head and outputting a clock signal; A speed calculation means for calculating and estimating the subsequent running speed of the magnetic card and outputting a write clock, and a write control means for causing the write head to perform a variable data write operation in synchronization with the write clock from the speed calculation means. It is something.

Further, in the present invention, the speed calculating means is provided with a speed determining circuit for determining whether or not the calculated traveling speed is within a predetermined speed range, and this speed determining circuit is configured to It outputs an error signal when it determines that it is outside.

[0011]

[Operation] In the present invention having such a structure, when the magnetic card is manually operated along the traveling guide, the reading head reads fixed data from the magnetic card. Based on the read fixed data, the speed calculation means calculates and estimates the subsequent running speed of the magnetic card and outputs a write clock. The write head performs a variable data write operation in synchronization with this write clock.

The fixed data read by the reading head is demodulated by a demodulation circuit, and a clock signal is supplied to speed calculation means to calculate and estimate the running speed of the magnetic card. The variable data read by the read head is also encoded by data encoding means. Therefore, the variable data written by the write head is immediately read and encoded, and the correctness of the written data can be verified in a single operation.

Furthermore, when the magnetic card travels extremely slowly or quickly, the speed determination circuit determines that the travel speed is outside the range and outputs an error signal.

[0014]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the configuration of a magnetic card.
is a card body made of synthetic resin, etc., and this card body 1
A magnetic track 2 is formed thereon. The magnetic track 2 has a fixed data front end line 2a located at a very small distance from the leading end in the card running direction, and a fixed data rear end line 2a located a predetermined distance apart from this front end line 2a. Line 2b, this rear
A variable data front end line 2c is provided at a position separated from the end line 2b by a very small distance, and a variable data rear end line 2d is provided at a position very small from the rear end in the card running direction. A fixed data area 3, a variable data front end line 2c and a variable data rear end line 2d are connected between the fixed data front end line 2a and the fixed data rear end line 2b. The area between the two is defined as a variable data area 4. Regarding the lengths of the fixed data area 3 and the variable data area 4, the variable data area 4 is considerably longer than the fixed data area 3.

FIG. 2 shows the configuration of the card running section.
5 is a traveling guide. A writing head 6 is disposed in the middle of the traveling guide 5, and a reading head 7 is disposed behind the writing head 6 by a distance D in the card traveling direction.

Each of the heads 6 and 7 in the traveling guide 5
A card pressing spring 8 for pressing the magnetic card 1 being run against each of the heads 6 and 7 is provided at the position where the magnetic card 1 is placed.

FIG. 3 is a block diagram showing a circuit configuration, in which data read by the reading head 7 from the magnetic track 2 of the magnetic card 1 is sent to a demodulation circuit 10 and a data encoding means as a data encoding means through an amplifier 9. These are supplied to the circuits 11 respectively. The demodulation circuit 10 demodulates a clock signal from the read data and supplies it to a speed calculation circuit 12 as speed calculation means.

The data encoding circuit 11 encodes the read data and outputs it to the subsequent stage. The speed calculation circuit 12 calculates the card running speed based on the input clock signal and generates a write clock that corresponds to the data write speed of the write head 6.

A write clock from the speed calculation circuit 12 is supplied to a write head control circuit 13. The write head control circuit 13 modulates input data;
The write head 6 is driven in synchronization with the write clock to write data into the variable data area 4 of the magnetic track 2 of the magnetic card 1.

Specifically, as shown in FIG. 4, the speed calculation circuit 12 supplies the clock signal from the demodulation circuit 10 to a signal circuit 21 and a signal switching control circuit 22, respectively. A signal from an integrating circuit 23 is also input to the switching circuit 21 .

The signal switching control circuit 22 constantly monitors the clock signal and controls switching of the switching circuit 21 according to the state, and turns off the output of the switching circuit 21 in a standby state, that is, a state where no clock signal is input. , when a clock signal from reading fixed data is input, the clock signal from the demodulation circuit 10 is outputted as a write clock, and when a clock signal from reading variable data is input, a signal from the integration circuit 23 is written. It is designed to be output as a clock.

The output of the switching circuit 21 is also supplied to the integrating circuit 23 and the differentiating circuit 24, respectively.

When the clock signal is input from the switching circuit 21 when reading fixed data, the differentiating circuit 24 differentiates the card running speed to obtain the amount of change in speed, and the integrating circuit 2
3. The integrating circuit 23 adds the speed change amount from the differentiating circuit 24 to the immediately preceding card running speed and outputs the result to the switching circuit 21, and has the function of calculating and estimating the card running speed together with the differentiating circuit 24. .

The output from the integrating circuit 23 is also supplied to a speed determining circuit 25. The speed determination circuit 25 determines the card running speed based on the output from the integrating circuit 23,
When it is determined that this speed is out of a predetermined speed range, an error signal is output.

In this embodiment having such a configuration, the magnetic card 1 is held in the hand and operated to run within the running guide 5. This allows the fixed data front of magnetic card 1 to
When the end line 2a begins to pass the read head 7, the read head 7 reads fixed data from the fixed data area 3 and supplies it to the demodulation circuit 10 and the data encoding circuit 11. The clock signal is then demodulated by the demodulation circuit 10 and supplied to the speed calculation circuit 12.

In the speed calculation circuit 12, the signal switching control circuit 2
2 controls the switching circuit 21 and outputs the clock signal from the demodulation circuit 10 as a write clock.

At this time, if the distance from the fixed data front end line 2a to the variable data front end line 2c is set smaller than the distance D between each head 6, 7, the reading head 7 can be Since the variable data front end line 2c has already passed the write head 6 when passing through the fixed data front end line 2a, the write head control circuit 13 immediately takes in the data, modulates it, and then converts it to the speed calculation circuit. The write head 6 is driven in synchronization with the write clock from 12 to write data into the variable data area 4.

After that, when the fixed data rear end line 2b passes the reading head 7, the signal switching control circuit 22 detects the end of reading the fixed data, and the switching circuit 2
1 is switched to the output of the integrating circuit 23.

After that, the differentiating circuit 24 and the integrating circuit 2
A write clock is output at the rate estimated by 3 and supplied to the write head control circuit 13. The write head control circuit 13 then drives the write head 6 in synchronization with the write clock from the speed calculation circuit 12 to continue writing data to the variable data area 4.

Then, as the variable data front end line 2c passes the read head 7, the write head 6
The new data written by is read by the read head 7. This read data is amplified via an amplifier 9, encoded by a data encoding circuit 11, and output to a subsequent stage. In the subsequent stage, it is therefore possible to check whether the newly written data is accurate.

After that, the variable data in the variable data area 4
When the rear end line 2d passes the reading head 7, the output of the clock signal from the demodulation circuit 10 is stopped, so the signal switching control circuit 22 detects the end of card travel and turns off the switching circuit 21.

Furthermore, if the card running speed becomes extremely fast or slow during reading of variable data, the speed judgment circuit 25 uses the output of the integrating circuit 23 to determine if the card running speed deviates from a preset speed range. It determines whether this is the case and outputs an error signal. Thereby, for example, the card running operation can be performed again.

In this way, even after the read head 7 finishes reading data from the fixed data area 3, the integrating circuit 23 and the differentiating circuit 24 calculate and estimate the running speed of the card and continue outputting the write clock. Since the data is supplied to the write head control circuit 13, it is only necessary to use a very small area of the magnetic track 2 as the fixed data area 3, and all other areas can be used as variable data areas. Therefore, the amount of data that can be stored in the variable data area 4 can be increased.

Furthermore, since the read data from the read head 7 is supplied to the data encoding circuit 11 and also to the demodulation circuit 10, the read head 7 can be used for both normal data reading and clock signal detection.

In the above embodiment, the reading head 7 is arranged at the rear of the writing head 6 with respect to the card running direction, but this is not necessarily the case, and the correlation with the writing timing is maintained. Therefore, it can be arranged arbitrarily.

[0037]

As described in detail above, according to the present invention, it is possible to provide a manual magnetic card reading/writing device in which the area in which variable data is written can be sufficiently enlarged.

Further, according to the present invention, it is possible to provide a manual magnetic card reading/writing device in which data written by a writing head can be immediately read and checked by a reading head.

Furthermore, according to the present invention, it is possible to provide a manual magnetic card reading/writing device that can detect when the magnetic card is running extremely slow or fast.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of a magnetic card in an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a card running section in the same embodiment.

FIG. 3 is a block diagram showing the main circuit configuration in the same embodiment.

FIG. 4 is a block diagram showing the configuration of a speed calculation circuit in FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1...Magnetic card, 2...Magnetic track, 3...Fixed data area, 4...Variable data area, 6...Writing head, 7...
Read head, 10... Demodulation circuit, 11... Data encoding circuit, 12... Speed calculation circuit, 13... Write head control circuit, 25... Speed determination circuit.

Claims (3)

[Claims] 1. A manual magnetic card reading/writing device for reading and writing data on a magnetic card manually operated along a traveling guide, comprising a write head and a read head provided in the middle of the traveling guide;
speed calculation means for calculating and estimating the subsequent running speed of the magnetic card based on the fixed data read by the read head and outputting a write clock; 1. A manual magnetic card reading/writing device comprising a write control means for performing a variable data write operation. 2. A manual magnetic card reading/writing device that reads and writes data to a magnetic card that is manually operated along a travel guide, in which a write head provided in the middle of the travel guide and a magnetic card that is operated while the magnetic card is traveling. a read head provided behind the write head in the direction; data encoding means for encoding variable data read by the read head; and demodulating fixed data read by the read head. a demodulation circuit that outputs a clock signal; a speed calculation means that calculates and estimates the subsequent running speed of the magnetic card based on the clock signal from the demodulation circuit and outputs a write clock;
A manual magnetic card reading/writing device comprising write control means for causing the write head to write variable data in synchronization with the write clock from the speed calculation means. 3. The speed calculation means is provided with a speed determination circuit that determines whether or not the calculated and estimated travel speed is within a predetermined speed range, and the speed determination circuit determines whether the travel speed is outside the range. 3. The manual magnetic card reading/writing device according to claim 1, wherein an error signal is output when a determination is made.