JPH0133072B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a public telephone that allows calls to be made using a hologram card that records hologram information regarding the frequency of calls and the like.

With the development of holographic technology in recent years, its use in various industrial fields is being explored. SUMMARY OF THE INVENTION An object of the present invention is to provide a hologram card public telephone that allows calls to be made using a card on which information regarding the number of calls and the like is recorded as a hologram.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing the configuration of a hologram card public telephone.

In the figure, 1 is a card holding device that outputs a card holding signal to the card control circuit 4 when a hologram card inserted from the insertion slot is held, and 2 is a call residue recorded on the hologram card held in the card holding device 1. A hologram reader that reads hologram information such as frequency; 3 a hologram destroyer that destroys the hologram of a hologram card held in the card holding device 1; 4 a hologram destroyer that reads the card holder 1, the hologram reader 2, and the hologram destroyer 3; This is a card control circuit that performs control and outputs the remaining call power signal from the hologram reader 2 to the logic control circuit 10.

Further, 5 is a telephone communication circuit, 6 is a charging signal receiving circuit that outputs a charge collection signal to the logic control circuit 10 upon receiving a called party response signal or a charging signal sent from the exchange via the telephone line, and 7 is a charging signal receiving circuit that outputs a charge collection signal to the logic control circuit 10. An emergency call device outputs an emergency call signal to a call control circuit 8, and when it receives an emergency call signal from the emergency call device 7 or a connection signal from the logic control circuit 10, it outputs an emergency call signal to the call control circuit 5.
is connected to the telephone line and disconnects the telephone circuit 5 from the telephone line upon receiving a disconnection signal from the emergency telephone device 7 or the logical control circuit 10; 9 detects the handset up and sends the handset up signal; This is a switch that outputs output.

Further, 10 outputs a hologram reading signal to the card control circuit 4, and upon receiving the call frequency signal from the card control circuit 4, outputs a connection signal to the call control circuit 8, and also outputs a charge collection signal from the billing signal receiving circuit 6. It is a logic control circuit that outputs a hologram destruction signal to the card control circuit 4 when the signal is received, and outputs a disconnection signal to the call control circuit 8 when the call remaining number signal is not received. Furthermore, if the logic control circuit 10 does not receive the remaining power signal after the hologram is destroyed, it will not continue until it receives a new remaining power signal by inserting the next hologram card, or until it receives a new remaining power signal. It also has a function of outputting a reminder signal to the reminder sound generation circuit 11 until the call is disconnected by a disconnection signal without being received.

11 is a reminder sound generation circuit, 12 is a logic control circuit 1
This is a display device that numerically displays the remaining call power of the hologram card held in the card holding device 1 based on the signal from 0.

The hologram card 13 has a plurality of holograms 13a, 13b, 13c, . . . as shown in FIG.
...are arranged in a straight line. These holograms 12a, 12b, 12c, . . . are all created using the same signal light and reference light.

Hologram 13 of this hologram card 13
As shown in FIG. 3, the hologram reading device 2 for reading the holograms a, 13b, 13c, . lens 22
A first prism 24 that allows the light flux that has passed through the first prism 24 to proceed in a direction parallel to the surface of the hologram card 13, a second prism 25 that allows the light flux that has passed through the first prism 24 to proceed to the hologram card 13, and reproduction from the light source 21. Diffraction light 26 generated when one hologram of the hologram card 13 is irradiated with the illumination light 26a
a hologram detector 28 that detects b through a condensing lens 27, a directly reflected light detector 29 that detects directly reflected light 26c generated at the same reflection angle as the incident angle of the reproduction illumination light 26a, and a hologram detector. 28
A determination circuit 30 is provided which determines whether a hologram is recorded (that is, whether there is a remaining call level) based on the AND of both outputs of the direct reflection light detector 29. A hologram destruction device 3 is arranged near the hologram 13 that is irradiated with the reproduction illumination light 26a, and includes a second prism 25, a condensing lens 27, a hologram detector 28, a direct reflection light detector 29, and a hologram destruction device 3. is constructed as a unit 32 so that it can be moved as a whole by a drive device 31 in the direction in which the holograms are arranged on the hologram card 13. Therefore, as the unit 32 is moved by the drive device 31, the second prism 25 moves parallel to the surface of the hologram card, so the irradiation position of the reproduction illumination light 26a on the surface of the hologram card 13 changes according to this movement. moves along the hologram arrangement direction of the hologram card 13 shown in FIG. 2, and the hologram destruction device 3 is always located near the hologram at the irradiation position.

The hologram destruction device 3 is composed of a thermoelectric element 3a and a drive section 3b. When the drive section 3b receives a control signal from the card control circuit 4, the drive section 3b destroys the thermoelectric element 3a on the surface of the hologram card 13. Push it and destroy the hologram. Note that a perforation means may be used instead of the thermoelectric element 3a.

Next, the operation of the hologram card public telephone with the above configuration will be explained.

(b) The user lifts the handset and inserts the hologram card 13 into the card insertion slot. A card holding signal is output from the card holding device 1 to the card control circuit 4.

(b) As a result, the card control circuit 4 receives the reproduction illumination light 26 from the light source 21 of the hologram reader 2.
a is irradiated and the drive device 31 is activated. The driving device 31 moves the unit 32 in the direction in which the holograms on the hologram card 13 are arranged to scan the holograms. If there is a valid hologram, a detection signal is output from the determination circuit 30 to the card control circuit 4 based on the outputs of both the hologram detector 28 and the direct reflection light detector 29. Based on this detection signal, the card control circuit 4 stores the number of valid holograms, and the remaining call power of the hologram card 13 is sent to the display 12 via the logic control circuit 10, and the display 12 displays the remaining call power. Is displayed. The unit 32 stops with the reproduction illumination light irradiated on the hologram at the end at the end of the above scanning.

(c) Upon receiving the detection signal, the card control circuit 4 outputs a call remaining number signal to the logic control circuit 10, which in turn outputs a connection signal to the call control circuit 8, and the call circuit 5 connected to a telephone line.

(d) When the user dials and the called party answers, a called party response signal arrives from the telephone line.
Upon receiving the called party response signal, the billing signal receiving circuit 6 outputs a billing signal to the logic control circuit 10;
The logic control circuit 10 thereby outputs a hologram destruction signal to the card control circuit 4. The drive section 3b of the hologram destruction device 3 is operated by a control signal from the card control circuit 4, and the hologram at the irradiation position is destroyed. This hologram destruction is confirmed by the card control circuit 4 depending on the presence or absence of a detection signal from the determination circuit 30. If destruction is not confirmed, the hologram destruction device 3 repeats the hologram destruction a predetermined number of times, and this repetition also destroys the hologram. If not, it is determined that the hologram card is not a genuine hologram card, and the telephone circuit 5 is disconnected from the telephone line.

(E) When the card control circuit 4 confirms that the hologram has been destroyed, it activates the drive device 31, and the unit 32 moves so that the adjacent hologram is at the irradiation position.

(f) When a billing signal arrives from the telephone line while the call is continuing, the billing signal receiving circuit 6 receives it, and the hologram at the irradiation position is destroyed, confirming the destruction, in the same way as in the case of receiving the called party response signal. The next hologram is detected, and the holograms are sequentially destroyed in the same manner every time the next billing signal arrives. Each time the power is destroyed, the output of the logic control circuit 10 causes the remaining power on the display 12 to be subtracted by 1 and displayed.

(G) If the hologram card 13 is pulled out from the card holding device 1 while the call is continuing, the card holding signal from the card holding device 1 will no longer be output, so the card control circuit 4 detects this, and the logic control circuit 10 A disconnection signal is output to the call control circuit 8, and the call circuit 5 is disconnected from the telephone line.

(H) When the user stops talking and puts down the handset, the telephone circuit 5 is disconnected from the telephone line by the telephone switch 9. The user takes out the hologram card 13 from the card insertion slot.

(li) If the remaining call power of the hologram card becomes zero while the call is continuing, a reminder signal is output from the logic control circuit 10 to the reminder sound generation circuit 11, and the user is notified with a reminder sound from the handset. If the next hologram card is inserted and a valid hologram is not detected before the arrival of the next billing signal, a disconnection signal is output from the logic control circuit 10 to the call control circuit 8, and the call circuit 5 is disconnected from the telephone line.

(v) When the emergency call device 7 is operated, the call circuit 5 is connected to the telephone line and a call can be made without inserting the hologram card 13.

Note that the remaining call power of the hologram card 13 can be determined by using a position detector (not shown) of the unit 32 to detect the effective end of the hologram card 13 instead of detecting the number of holograms as described above. This may be done by detecting the position of the unit 32 when the hologram is detected. or,
It is also possible to use the hologram reproduced image as a bit pattern, and use a different bit pattern for each hologram to determine the remaining power of the call.

In addition, as shown in FIG. 4, the card insertion slot 14
Pin 15 is installed on the
is removed from the card insertion slot 14 to enable the insertion of the hologram card 13, and the pin 15 is removed while the call continues.
The pin 15 may protrude to prevent the hologram card 13 inserted from the card insertion slot 14 from being pulled out, and the pin 15 may be withdrawn to allow the hologram card 13 to be taken out when the call is finished and the handset is put down.

In this way, fraud such as pulling out the hologram card during a call before the hologram is destroyed can be prevented.

Moreover, in this way, instead of destroying the hologram every time a called party response signal and a billing signal arrive as described above, it is possible to destroy the hologram at the irradiation position only when the call ends. .

In addition, when the interval between arrival of billing signals is short, such as in the case of long-distance calls, even if you try to replace the hologram card with the second hologram card after the hologram for the last call on the first hologram card is detected, it will not be possible to replace the hologram card in time. Therefore, an operation switch (not shown) is provided to preempt a plurality of degrees (for example, 5 degrees), and when this operation switch is operated, the remaining 5 degrees of the first hologram card 13 are preempted. It is also possible to remove the first hologram card 13 during the time corresponding to this 5 degrees, and to provide a margin for inserting the second hologram card 13.

In addition, in order to prevent unauthorized calls using counterfeit hologram cards, a code plate that scatters signal light is used when creating the hologram, and a code plate with the same scattering characteristics as this code plate is added to the hologram reader 2 to emit diffracted light 26b. It may be read by scattering them.

Further, the hologram card 13 may have a plurality of hologram rows, and the hologram reader 2 may be configured to irradiate each row with the reproduction illumination light 26a.

Since the present invention is configured as described above, it is possible to realize a public telephone that can make calls using a card on which hologram information is recorded, and when a hologram at a certain scanning position is determined, the hologram is destroyed at that position. There is no need to move cards or optical units for destruction, which saves card processing time and prevents cards from being stolen in any unauthorized way during destruction. It was returned,
It is possible to realize a public telephone set in which there is no fear that one hologram that has already been used will be illegally reused.

Furthermore, if the card holding device is configured so that the inserted hologram card cannot be pulled out during a call, a public telephone can be realized that is free from fraud, such as the read hologram being reused without being destroyed.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the configuration of an embodiment of the hologram card public telephone of the present invention, Fig. 2 is a plan view showing the hologram card, Fig. 3 is a schematic configuration diagram of the hologram reader, and Fig. 4 is a bookmarking diagram. FIG. 7 is an explanatory diagram of a card insertion slot in another embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Card holding device, 2... Hologram reading device, 3... Hologram destruction device, 3a... Thermoelectric element, 3b... Drive unit, 4... Card control circuit, 5... Call circuit, 6... Billing signal receiving circuit,
7...Emergency call device, 8...Call control circuit, 9...
...Hook switch, 10...Logic control circuit, 11
...Reminding sound generation circuit, 12...Display device, 13...
hologram card, 21... light source, 22... lens, 23... lens, 24... first prism,
25...Second prism, 26a...Illumination light for reproduction, 26b...Diffracted light, 26c...Directly reflected light,
27... Condensing lens, 28... Hologram detector, 29... Direct reflection light detector, 30... Judgment circuit, 31... Drive device, 32... Unit.

Claims (1)

[Scope of Claims] 1. A telephone communication circuit, a charging signal receiving circuit that receives a called party response signal or a charging signal and outputs a charge collection signal, and a hook switch that detects a handset up and outputs a handset up signal. a call control circuit that connects and disconnects the call circuit and the telephone line; a card holding device that outputs a card holding signal when holding an inserted hologram card; and a plurality of holograms on which the same call frequency information is recorded. an optical system that makes reproduction illumination light incident at a constant angle onto the surface of a hologram card held by the card holding device in which the holograms are arranged at intervals, and optically scans the surface of the hologram card in the direction in which the holograms are arranged; , a direct reflection light detector that is movable parallel to the surface of the hologram card and detects light directly reflected from the surface; and a direct reflection light detector that is in a fixed positional relationship with respect to the direct reflection light detector and that is in a normal position on the surface of the hologram card. a hologram detector provided at a position capable of detecting hologram information by receiving diffracted light generated from the hologram; a drive device that moves both of the detectors parallel to the surface of the hologram card in synchronization with the optical scanning; a determination circuit that determines that a regular hologram is recorded at a scanning position when the hologram detector detects regular hologram information when a detection output is output from the direct reflection light detector; When the determination circuit determines that the hologram is a regular hologram, an operation is started to destroy the determined hologram of the hologram card held by the card holding device at the same scanning position where the determination was made. a hologram destruction device; a card control circuit that controls determination and destruction of the hologram and outputs a remaining call power signal based on a signal from the determination circuit; and upon receiving a handset up signal, the card control circuit destroys the hologram. It outputs a reading signal, and when it receives a remaining call power signal from the card control circuit, it outputs a connection signal to the call control circuit, and when it receives a charge collection signal, it outputs a hologram destruction signal to the card control circuit, and outputs a remaining call power signal. A hologram card public telephone comprising a control circuit that outputs a disconnection signal to a call control circuit if the call is not received. 2. a telephone call circuit; a billing signal receiving circuit that receives a called party response signal or a billing signal and outputs a charge collection signal; a hook switch that detects a handset up and outputs a handset up signal; and the telephone call circuit. A call control circuit that connects and disconnects from a telephone line, a card holding device that outputs a card holding signal when an inserted hologram card is held, and a control that prevents the hologram card from being removed from the card holding device while a call is continuing. A regulating means and a hologram card surface held by the card holding device in which a plurality of holograms having the same communication frequency information recorded thereon are arranged at intervals, a reproduction illumination light is made incident at a constant angle, and the holograms are an optical system that optically scans the card surface in the direction in which the holograms are arranged; a direct reflection light detector that is movable parallel to the hologram card surface and detects direct reflection light from the surface; and the direct reflection light detector. a hologram detector provided in a fixed positional relationship with respect to the hologram card and at a position capable of detecting hologram information by receiving diffracted light generated from the regular hologram on the surface of the hologram card; a drive device that moves the hologram card parallel to the surface of the hologram card; and a drive device that moves the hologram card parallel to the surface of the hologram card; a determination circuit that determines that a hologram is recorded; and when the determination circuit determines that the hologram is a regular hologram, the hologram held by the card holding device is placed at the same scanning position as the determination is made; a hologram destruction device that starts an operation to destroy the hologram of the card that has been determined; and a card control circuit that controls the determination and destruction of the hologram and outputs a remaining call power signal based on the signal from the determination circuit. When a handset up signal is received, a hologram reading signal is output to the card control circuit, and when a call remaining number signal is received from the card control circuit, a connection signal is output to the call control circuit, and a charge collection signal is received. A hologram card public telephone set includes a control circuit that outputs a hologram destruction signal to the card control circuit, and outputs a disconnection signal to the call control circuit if the remaining power signal is not received.