JPS6038757B2 - Card feeding method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a card feeding system for a code reader used as an input device for an electronic computer.

In card processing machines that use a system that stores all of the card's transaction information in a buffer and then transfers the data, the card is transferred after receiving a data transfer command from the CPU (Central Processing Unit). Sending: After storing the information in the buffer and detecting the end of the card, data transfer is started, and the command ends when all data has been sent, after which the next data transfer command cannot be issued. The repeated operations of card feeding, reading and storing, and data transfer are performed. Figure 1 shows a conventional logic circuit, where A is a signal to start energizing the card feeding magnet. Move the magnet driver (4) to energize the card feed magnet (4).

B is a signal for cutting off this current, and is normally issued when it is confirmed that the card has been sent out. FIG. 3 shows a conventional operation time chart.

a) is the card argument command signal, b) is the energization time of the card sending magnet, c) is the force reading time, d) is the card rear end detection signal, e) is the data transfer time to the channel,
f) indicates an instruction end signal. In this time chart, the time from detecting the end of the card to receiving the next command and starting energization of the force feed magnet is the time when the mechanical operation stops and extra time is required for processing one card. It's time to become In these operations, there is no mechanical movement during the time from when the rear end of the card is detected until the card feeding operation starts, and the maximum utilization of mechanical operations cannot be achieved during this time. However, the disadvantage is that the processing speed decreases.

The purpose of the present invention is to solve the above-mentioned drawbacks,
This improves the processing speed of mechanical operations in the card dispensing device.

A magnet or the like is used for the card feeding mechanism, and the operating time thereof usually takes 1 second.

In comparison, the data transfer time is several ms, so
From the time when the rear end of the card is detected, the card feeding magnet is energized for a certain period of time. The data transfer is completed within a certain period of time during which the magnet is energized, and the next command is issued, and the magnet continues to be energized and the card is sent out. If the next command is not issued within a certain period of time while the power is on, the card must not be read or lost, and the card will not be sent out. By doing so, it is possible to operate without reducing the maximum processing speed of mechanical operation. Figure 2 shows a logic circuit using this method.
Signals A and B are the same as the signals explained in Figure 1, but C is a detection signal for the end of the card, and when this signal is output, it activates the one shot in 5, passes through the OR gate in 6, and operates the magnet driver 3. 4. Energize the power delivery magnet. This excitation time must be set to an appropriate value based on the one-shot time in step 5. FIG. 4 is a time chart when this method is used, and steps a) to f) are the same as those described in FIG. 3.

g) is the energization time of the card feeding magnet 4 made in one shot 5 after detecting the end of the force field. The processing time required for the first command is the same as before, but from the second time onwards, the time from when the end of the card is detected to when the next command is issued is the time indicated by signal g). If it is shorter, the card feed-out magnet 4 is energized following the signal g), so the start of the card removal time c) is longer, and the processing time for one card is the same, but Since the energization of the card feeding magnet and the data transfer time overlap, the overall processing time is shortened by this amount. This allows maximum processing speed without stopping the mechanical operation. If the next command is not issued after the completion of the command, cards must not be sent out, so this time must be taken into consideration when determining the time for one shot 5.

When the time from when the end of the card is detected to when the next command is issued exceeds the time when signal g) is ○N, the timing is shown by the dotted line in Figure 4, and at this time, the timing is the same as before. processing time is required.

Normally, when a card reading machine reads a card, commands are executed one after another and the data must be read, so with conventional machines, the processing speed slows down by the time it takes to transfer data, but the main By using this method, the data transfer time and the energization of the card feeding magnet overlap to maximize the processing speed compared to the mechanical operation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional example, FIG. 2 is a block diagram showing an embodiment of the present invention, FIG. 3 is a time chart of FIG. 1, and FIG. 4 is a time chart of FIG. 2. 1, 2, 6...OR gate, 3...Magnetic driver, 4...Card feeding magnet, 5...One-shot multipipulator. O' Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 In a card feeding method of a card reading device in which a card feeding mechanism is driven to feed a card by receiving a card reading command, the read information of the card is temporarily stored in a buffer, and then the data is transferred, when the end of the card is detected. , At the same time as the data is transferred, the excitation of the card sending magnet of the card sending mechanism is started, and upon receiving a reading command, the excitation is continued to send out the card,
A card feeding method characterized in that when a reading command is not accepted, excitation is canceled to prevent card feeding.