JPH0313846Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a portable, hand-operated encoder for encoding magnetic data in the form of "spots" or patterns on a card or card key. A type of card key that can be used with this invention is described in U.S. Patent No. 7, issued March 7, 1978.
It is described in No. 4077242.

In the past, most known card keys have been uniformly encoded with their magnetic patterns at the factory. In other words, no device has ever been provided that allows the end user to form a desired magnetic spot code on the surface of the card or card key that he/she uses. For this reason, even if the user of the card or card key wishes to change the combination of card keys, encode a blank card key, etc., he or she may have to wait for a considerable period of time.

The main object of the present invention is therefore to provide a relatively simple and portable encoder which can be manually operated by the user to form magnetic spots on magnetic cards and card keys as desired.

Another object of the present invention is to provide a relatively compact design that is light enough to be easily handled by the user himself, and at the same time contains all the equipment and wiring necessary to create the relatively strong magnetic flux required for the encoding operation. Provides an encoder.

Other objects and advantages of the present invention will become apparent from the following description and accompanying drawings.

The present encoder is designed to provide a half section designated 1A in FIG. 1 and an opposite similar half designated 1B in FIGS. 2 and 3 prior to final assembly. It has a molded housing, preferably made of plastic, which is split in the middle. This housing has a bottom wall part 2 and a side wall part 3.
2, which together form a pistol-shaped grip within which the total thickness of the housing is less than half its width as shown in FIG. The side wall 3 and the top 4 of the housing terminate in a beveled opening 5 into which a support 6 is received by a drop for rigid fixation to the housing.

Fixed in the central opening 7 of the support 6 is a coil 8, which has a magnetic wire of wire No. 24 about
It is formed by winding it 150 times, and is used to form lines of magnetic force to give a strong magnetic flux to the probe 9 at the center position, which the user attaches to the card to be encoded, as shown in Figure 2. It is. Since the outline of the entire circuit is shown in FIG. 4, only the main components of the circuit are shown in FIG. First, in FIG. 4, the encoder is connected to a power source 12 including a charging resistor 13 by wires 10 and 11.

A trigger switch, indicated generally at 15, is used to charge and discharge capacitor 16. A lamp 17 is connected in parallel to the capacitor 16 to indicate the state of the capacitor 16.

When the trigger switch 15 is placed in the up position as shown in FIG. 4, the capacitor 16 discharges through the coil 8 to create a desired magnetic field at the probe 9. In order to equalize the strength of this magnetic field, the discharge of capacitor 16 is controlled by a silicon controlled rectifier (SCR).
In this SCR, gate 21 is connected to the circuit via resistor 22 to create the desired voltage drop. There is also a polarity switch 25 in the circuit of the coil 8, which allows the user to reverse the polarity of the magnetic flux applied to the card on which the encoding operation is to be performed.

Referring again to FIG. 1, trigger switch 15
is in the form of a push button, which is convenient to press with the user's index finger when producing the desired pulse on the probe.

This polarity switch 25 is also located close to the user's index finger for easy switching from one polarity to another as required for the card encoding operation.

Although the capacitance of the capacitor required for this type of circuit is quite large, such a capacitor is easily accommodated within the space available within the housing 1. The lamp 17 is the support part 3
0, and this support is further fixed to the top wall 4 of the housing 1, so that the operator can easily know the status of the lamp 17.

The lamp not only provides a means to confirm that the capacitor 16 is charged, but also provides an indication when the device is connected to and disconnected from power. Furthermore, the lamp 17 gradually discharges the charged capacitor via the filament so that the present concoder does not store a charged capacitor. If necessary, this circuit may be provided with an ON/OFF switch (not shown).

In use, as shown in FIG. 2, the encoder 1 includes a template 33 for holding the card in the desired position while attaching the probe 9 to the card 32 to form a magnetic spot on the card.
It will be seen that it is also possible to have This template 33 may be provided with a non-magnetic guide plate 34 having openings arranged in a predetermined pattern to ensure that the magnetic spots are formed at the correct points when the probe 9 is passed through. good.

The invention also allows for the use of dry cell batteries as the DC power source. This dry battery has power supply 12 and wiring 1
It can be replaced with 0,11. As can be seen from Figure 1, such dry batteries are
It can also be placed at the top of the housing as shown in .

[Brief explanation of the drawing]

Figure 1 is a side view showing an embodiment of the encoder with half of the housing removed to show the internal structure;
3 is a side view of an encoder used to form a magnetic spot on a card key, FIG. 3 is a plan view of the encoder of FIG. 2, and FIG. 4 is a circuit wiring diagram. DESCRIPTION OF SYMBOLS 1... Housing, 2... Bottom wall part, 3... Side wall part, 4
...Top part, 5...Opening, 6...Support part, 7...Opening, 8...
Coil, 9...Probe, 12...Power supply, 15...Trigger switch, 16...Capacitor, 17...Lamp, 20...SCR, 25...Polarity switch, 30...
Support part, 32...Card, 33...Template.

Claims (1)

[Claims for Utility Model Registration] A housing in which the grip portion is formed in the shape of a pistol and is held and operated by hand, and an outer tip is attached to the housing and applied to the surface to be magnetized. a probe; an electrical circuit disposed within the housing and including a DC power source, a winding wound around the probe, and a capacitor chargeable by the DC power source; when the outer tip is applied to the surface; a trigger switch provided on the pistol-shaped grip portion connected to the electrical circuit to discharge the capacitor via the winding to generate a magnetic field that magnetizes the surface; and a lamp connected in parallel to the capacitor to indicate whether the device is connected to the DC power source and to discharge excess charge of the capacitor when the device is inactive. a rectifier connected in series with the winding that equalizes the strength of the magnetic field; a polarity switch enabling switching from one polarity to another; a magnetic card holder formed with apertures arranged in a desired pattern to receive said probe so that the magnetic card key is accurately magnetized; A device for encoding a magnetic card key, etc., comprising: .