JPH1013695A - Electronic information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display device with which images can be displayed with reliability by surely limiting use due to the third person and permitting only the access from regular user. SOLUTION: A display ID designating area Ra for recording a transmitter ID is secured at the head part of transmission original, and an image area Rb for plotting images to be transmitted is set continuously to this area Ra. A pattern to be automatically recognized by a pattern recognition program, etc., previously loaded to this device such as a character, symbol, graphic or bar code form, for example, records the transmitter ID in the display ID designating area Ra. When image data for ID identification exist in the display ID designating area Ra, the image data for identification are compared with the data for pattern matching of a registered ID stored in an erasable electrically programmable read only memory(EEPROM). When both the data are not coincident, it is judged the user is not regular to finish reception or to cutoff a line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic information display device for recording and displaying a still image on a display based on image information sent from an external host device.

[0002]

2. Description of the Related Art Conventionally, a magnetically responsive magnetic display sheet has been known as a display body which develops or erases color in response to the direction and strength of a magnetic field (for example, Japanese Patent Application Laid-Open No. 48-48).
56393, JP-A-2-146082).

[0003] Such a magnetic display sheet can draw simple characters and figures by contacting a magnet pen with a built-in magnet on the sheet surface, and can be reused many times by erasing. Has been put to practical use.

In recent years, an electronic information display device has been developed which records and displays a still image on a magnetic display sheet by a recording head forming a dot matrix magnetic field based on print information sent from an external host device. Is being done.
Since the electronic information display device can change the display content arbitrarily by remote control from an external host device, it can be installed at public facilities, stations, retail stores, etc. Can be widely announced and advertised. In addition, poster replacement work is not required, which contributes to resource saving of paper and the like, and is therefore expected to be a future bulletin board.

[0005]

In such an electronic information display device, it is possible to perform signal transmission by directly connecting a cable to an external host device on the transmitting side. No more than 10 spaces between devices
m.

As a countermeasure, an external host device and an electronic information display device are connected by a public line such as a telephone line, and a signal is transmitted to a remote electronic information display device by interposing a modem device. Can be performed.

[0007] However, since anybody can access through a public line, a third party sends a signal contrary to the intention of the installer to the electronic information display device to delete the currently displayed image. Or rewriting to a different image.

[0008] When access from a plurality of users is permitted, a use time is allocated to each user in order to restrict simultaneous access, but a person other than an authorized user is careless. Data may be transmitted to the server, and an erroneous image display may be performed.

[0009] An object of the present invention is to provide an electronic information display device capable of reliably restricting the use of a third party, permitting access only from a legitimate user, and realizing a reliable image display. is there.

[0010]

SUMMARY OF THE INVENTION The present invention provides a writable and erasable display, and recording means for forming a still image on the display based on image information transmitted from an external host device. And identification information registering means for registering identification information of a user who is permitted to use the apparatus, and sender identification information detecting means for detecting sender identification information transmitted from an external host device accompanying image information. Comparing the sender identification information detected by the sender identification information detection means with the registered identification information registered in the identification information registration means, and when the two do not match, receiving image information or displaying a still image Is an electronic information display device characterized by stopping. According to the present invention, the sender identification information transmitted along with the image information is detected, and the sender identification information is compared and determined to determine whether the sender is a valid user. I can judge. If the sender is a legitimate user,
The normal data reception processing and the image display processing are continued as they are. On the other hand, if the sender is not a legitimate user,
Immediately stop the data receiving process or process the received data as invalid data without displaying it. Thus, only the image information transmitted from the authorized user can be displayed on the display as a still image.

Further, according to the present invention, the image information transmitted from the external host device is information obtained by two-dimensionally scanning a transmission document including an image area in which a still image document is recorded and an identification information display area in which sender identification information is recorded. There is a feature. According to the present invention, the image information transmitted from the external host device is information obtained by two-dimensionally scanning the transmission document, for example, information read by a facsimile machine or the like, and the transmission document has an image area and an identification information display area. Contains. The identification information display area may be at the leading or trailing end in the sub-scanning direction with respect to the image area, or may be at the side end of the image area. By thus adding the sender identification information to the transmission original, the integration of the image information and the sender identification information is enhanced, and the sender identification information can be transmitted by a simple operation procedure similar to the facsimile transmission procedure. .

Further, the present invention is characterized in that the sender identification information is recorded in a character, symbol, graphic or barcode format. According to the present invention, since the sender identification information is recorded in the form of characters, symbols, figures, or bar codes, the sender identification information detecting means can reliably identify the sender identification information. When the sender identification information is a character, a symbol, or a graphic, for example, a known character recognition program can be used. When the sender identification information is in a barcode format, a known barcode reading program can be used.

[0013] The present invention is characterized in that the recording means does not display information present in the identification information display area on a display. According to the present invention, by preventing information existing in the identification information display area from being displayed on the display, it is possible to prevent a third party from knowing the existence and content of the identification information. In addition, since information irrelevant to the content of the bulletin is not displayed, the advertisement effect is improved.

[0014]

FIG. 1 is a side sectional view of an electronic information display device according to the present invention, and FIG. 2 is a partial perspective view thereof. A driven roller 50 is disposed on the inner upper portion of the housing 1, and a driving roller 60 is disposed on the inner lower portion. A flexible and endless magnetic member is provided between the two rollers 50 and 60. The display sheet 10 is suspended. Roller 5
Numeral 0 is urged upward by an elastic member (not shown) such as a spring, and applies a constant tension to the magnetic display sheet 10 to stabilize the running of the sheet and maintain the flatness of the sheet surface. The roller 60 is driven to rotate by a motor 63 via gears 61 and 62. By driving the roller 60, the magnetic display sheet 10 is moved from bottom to top on the front side of the housing 1 (left side in FIG. 1 and rear side in FIG. 2), and from the rear side of the housing 1 (right side in FIG. In FIG. 2 (front side), circulation is performed so as to transfer from top to bottom. A display window 2 made of a transparent material such as acrylic resin or glass is formed on the front surface of the housing 1.

The recording head 30 is disposed below the rear side of the magnetic display sheet 10 on the rear side of the transfer side, and receives a dot matrix toward the surface of the magnetic display sheet 10 based on a print signal from an external host device (not shown). A recording magnetic field is generated. The recording head 30 has a plurality of electromagnetic coils arranged in a staggered manner, for example, and is mounted on a carriage 31 that reciprocates in the sheet width direction. The carriage 31 is 2
Endless belt 3 suspended between two pulleys 34, 35
3 and a motor 36 that drives the pulley 35 to rotate while being guided by the two guide shafts 32.
Driven by

The erasing head 20 is composed of a permanent magnet or the like having a length equal to or greater than the sheet width, and is disposed above the front transfer side of the magnetic display sheet 10 and is in close contact with the back side of the magnetic display sheet 10. I have.

FIG. 3 is a partial sectional view showing the structure of the magnetic display sheet 10. As shown in FIG. On the magnetic display sheet 10, microcapsules 15 that develop color in response to magnetism are applied and fixed over the entire surface. The microcapsule 15 is composed of a high-viscosity liquid and a spherical shell that holds the liquid tightly.
In this liquid, substantially black magnetic particles and substantially white non-magnetic particles are dispersed. For example, black iron oxide (FeO) particles having a particle size of 0.1 to 5 μm are used as magnetic particles, and white titanium oxide particles having a particle size of 0.1 to 5 μm are used as nonmagnetic particles. In addition, as the high-viscosity liquid, an aqueous liquid, an oil or fat, an organic solvent including a surfactant-based solvent or the like is used, and gelatin is mainly used as a material of the spherical shell. Distributed in a range.

The microcapsules 15 are kneaded with a binder 14 made of a highly transparent synthetic rubber-based adhesive or the like, and applied to a substrate 11 made of a transparent material such as polyethylene terephthalate.
A μm capsule coating layer 12 is formed.

On the back surface of the capsule coating layer 12, a protective sheet 13 made of, for example, a polypropylene long-fiber nonwoven fabric is adhered so as to have a thickness of, for example, 300 to 1000 μm.
Seat running is facilitated.

On the other hand, the recording head 30 has a box-shaped yoke 39 made of a high-permeability material, a magnetic core 37 made of a high-permeability material erected inside the yoke 39, and an electromagnetic core mounted on the magnetic core 37. And a plurality of magnetic cores 37 and electromagnetic coils 38 corresponding to the plurality of print dots. A number of voids are formed on the printing surface 39a of the yoke 39, and the leading end of the magnetic core 37 is positioned at the center of each void, and the leakage magnetic field is generated by the presence of the void between the magnetic core 37 and the void. Occurs.

When the electromagnetic coil 38 is selectively energized in response to a print signal, a magnetic field is generated along the axial direction of the magnetic core 37, and passes through a magnetic circuit composed of the magnetic core 37, a gap and a yoke 39. , A recording magnetic field is generated toward the magnetic display sheet 10.

Next, the principle of magnetic recording / display and erasure will be described. When the recording head 30 is brought close to the surface of the magnetic display sheet 10 where the substrate 11 is located, and a recording magnetic field is generated based on a print signal, the magnetic particles dispersed in the microcapsules 15 are attracted to the substrate 11 and the pressure is reduced. Thereby, the non-magnetic particles move to the protective sheet 13 side.
Then, when viewed from the front side of the magnetic display sheet 10, the portion to which the recording magnetic field is applied is observed to have a substantially black color. By applying the magnetic field in a dot matrix using the recording head 30, characters and symbols can be displayed. Can be recorded.

Next, when the erasing head 20 is brought close to the back side of the magnetic display sheet 10, that is, the side where the protective sheet 13 is located, the magnetic particles dispersed in the microcapsules 15 are attracted to the protective sheet 13 side, and the pressure is reduced. As a result, the non-magnetic particles move toward the base 11. Then, when viewed from the front side of the magnetic display sheet 10, the portion to which the erasing magnetic field is applied becomes substantially white, and the erasing magnetic field is uniformly erased by applying the erasing magnetic field to the entire sheet width.

As the above-mentioned high-viscosity liquid in the microcapsule 15, a liquid having a predetermined viscosity is selected in order to maintain a display state of the magnetic particles moved to the back side or the front side by applying a magnetic field. That is, if the viscosity of the liquid is low, the display state is prevented from being disturbed by the particles that have once moved to the front side or the back side settling or moving due to vibration or the like. Therefore, the above-described recording head 3
The magnetic attraction force in the zero and erasing heads 20 needs to be greater than the yield value due to the viscosity of the liquid, and thereby writing and erasing of a display are performed.

Next, the operation of the entire apparatus will be described. Referring to FIGS. 1 and 2, first, before printing is started, the magnetic display sheet 10 is circulated at a constant speed and the erase head 20 is rotated.
To erase the entire surface. Next, a print signal is received from an external host device, and each time the development of image data for one print line is completed, the recording head 30 is moved for several milliseconds to several hundred milliseconds while moving in the sheet width direction. The magnetic printing is performed by applying the pulse current described above and applying a dot matrix magnetic field to the surface of the magnetic display sheet 10.

When printing for one line is completed, the magnetic display sheet 10 is moved by a predetermined feed pitch and stopped, and then printing is performed based on the image data developed for the next printing line. Thus, the development of the image data, the recording head 30
The image of one sheet is formed while repeating the serial printing and the intermittent feeding of the magnetic display sheet 10.

Next, when printing a new image, the magnetic display sheet 10 is circulated at a constant speed to erase the entire surface by the erasing head 20, and then the recording head 3 is printed.
Performs serial printing with 0.

FIG. 4 is a block diagram showing the electrical configuration of the electronic information display device according to the present invention. The electronic information display device includes a CPU (central processing unit) 71 for controlling the operation of the entire device according to a predetermined program, a clock circuit 72 for generating a clock for determining the operation timing, and a timer circuit 73 for measuring the elapsed time. Operation panel 7 including various switches, display LEDs (light emitting diodes), etc.
5 and an input / output (I /
O) A circuit 74 and an EPROM (Electrically Programmable Read Only Memory) for storing programs and data.
ory) 76 and EE for storing data in a rewritable manner
PROM (Erasable Electrically Programmable Read On
ly Memory) 77, a system control circuit 78 for managing display-related management such as display time management and initial operation at power-on, and an interface circuit 80 for communicating with external devices. And an interface (I / I) for controlling the interface circuit 80.
F) The control circuit 79, the motor control circuit 83 for controlling the number of rotations and the direction of rotation of the motors 36 and 63, and the recording head 30
And a RAM (Random Access Memory) for temporarily storing various data such as print data.
Memory) 85, a memory control circuit 86 for controlling the use area of each of the memories 76, 77, 85, a driver circuit 88 for driving the motors 36, 63 and the recording head 30, and a driver control circuit 87 for controlling the driver circuit 88 And a bus 70 for interconnecting the circuits.

The interface circuit 80 is a facsimile modem (facsimile modem) for transmitting / receiving a signal to / from another facsimile apparatus via a transmission line such as a telephone line.
81 and a serial communication circuit 82 for transmitting and receiving signals to and from another computer in accordance with a communication standard such as RS232C.
And

The user ID (identification information) according to the present invention and the data for pattern matching corresponding to the user ID are transmitted by the data input from the operation panel 75 or the remote data input via the interface circuit 80.
It is stored in the OM 77 in advance.

The user ID and the corresponding pattern matching data stored in the EEPROM 77 can be changed or added by data input from the operation panel 75 or remote data input via the interface circuit 80. is there.

FIGS. 5 to 8 are flowcharts showing the operation. First, in step a1 of FIG.
Are EPROM 76 and EEPROM as shown in FIG.
Data is taken out from various kinds of setting information stored in advance in M77 and initialized in the RAM 85. Here, the total number of pages P
Is the number of pages of the image stored in the RAM 85, and the initial value is 8
It is. The designated page number N is the page number of the currently displayed image, which is an initial value at the time of shipment from the factory and 0 which means no designation in a non-display state. The timer value T is a time when the timer circuit 73 measures the time and generates a timer interrupt. The initial value is 0, which means that the timer interrupt is generated immediately after the power is turned on.

Next, in step a2, it is determined whether or not there is an incoming fax. If there is no incoming fax, the process proceeds to step a4, and it is determined whether or not there is a timer interrupt for determining the timing of switching the current display image to the next image. If there is no timer interrupt, the process returns to step a2, and waits in a loop until a facsimile incoming call of step a2 or a timer interrupt of step a4 occurs.

When a facsimile incoming call occurs in step a2,
At step a3, a data processing routine is executed. Also,
When a timer interrupt occurs in step a4, an interrupt processing routine is executed in step a5.

FIG. 6 is a flowchart showing a data processing routine of step a3. First, in step b1, the FAX modem 81 starts receiving FAX data. In step b2, the display I of the image data of the first page is displayed.
It is determined whether or not the reception of the image data in the D (identification information) designated area has been completed. Until the reception of the image data in the display ID designated area has been completed, the data is received for each scanning line in step b3. To store the received data in the input buffer set in the RAM 85. When the reception of the image data in the display ID designation area is completed, the process proceeds to step b5.

FIGS. 9A to 9C show examples of transmission originals. A display ID designation area Ra for recording a sender ID (identification information) is secured at a leading portion of the transmission original (for example, about 10 mm in length of A4 size paper), and an image to be transmitted following this area Ra is secured. Image area R for drawing
b is set. In the display ID designation area Ra, a sender ID is recorded in a pattern that can be automatically recognized by a pattern recognition program or the like installed in the apparatus in advance, for example, a character, a symbol, a graphic, or a barcode format. Sender ID
May be printed in advance on the transmission document, or may be handwritten each time it is transmitted.

FIG. 9A shows a mark M consisting of a white circle “○” in the upper left corner of the transmitted document as the sender ID, and the pattern recognition program determines whether the mark M exists, its position and shape. Then, it is determined whether or not the fax has been transmitted from a valid user.

FIG. 9B shows a mark M consisting of a four-digit number "0123" in the upper left corner of the transmitted document as the sender ID.
The pattern recognition program determines the presence / absence, position, and shape of the mark M, and sends F
It is determined whether AX transmission has been performed.

FIG. 9C shows, as a sender ID, a mark M consisting of four squares "" in the upper left corner of the transmitted document, and the lower right square is painted in black by hand, and pattern recognition is performed. The program determines the presence / absence, position and shape of the mark M, or a blackened pattern, and sends a fax from a valid user.
It is determined whether or not it has been transmitted.

In the above description, the sender ID is 3
Although one example is shown, an image pattern according to the discriminating ability of the pattern recognition program, such as a kanji, a numeral, a symbol, a graphic, a barcode, or a combination thereof, can be used.

Returning to FIG. 6, in step b5, it is determined whether or not image data for identification exists in the display ID designation area Ra.
The AX reception operation is completed and the line is disconnected.

On the other hand, if the image data for identification exists in step b5, the image data for identification and E
The registration ID stored in the EPROM 77 is compared with the pattern matching data. If the two data do not match, it is determined that the user is not a valid user, and the reception ends and the line is disconnected in step b14.

If the two data match, then in step b7, it is determined whether to hide the image data in the display ID designated area by referring to the image data display setting information in the display ID designated area in the EEPROM 77. If the setting is made, the input buffer is cleared in step b8 to clear the image data in the display ID designation area, and if the display setting is made, the image data in the display ID designation area is held as it is, and the process proceeds to step b9. The reception of the image data described in the image area Rb of the transmission original is continued. Thereafter, similarly to steps b2 to b4, data is received for each scanning line in step b10 until the reception of image data in the image area Rb is completed, and the received data is stored in the input buffer set in the RAM 85 in step b11. And
When the reception of one image data is completed, step b1
Then, the process proceeds to 2 to terminate the fax reception operation and disconnect the line. Thereafter, the image data for one sheet stored in the input buffer in step b13 is stored in the display image storage area set in another area in the RAM 85.

A plurality of image data to be displayed on the magnetic display sheet 10 can be stored in the display image storage area of the RAM 85, and each image is associated with a page number. Further, by increasing the storage capacity of the RAM 85 or using a large-capacity storage device such as a hard disk or an optical disk together, the number of pages for storing images can be increased.

When the data processing routine of FIG. 6 ends,
It returns to step a4 of FIG. In this way, the sender ID is extracted from one piece of image data and discriminated, and if the sender is not a valid user, the reception of the image data is interrupted, thereby abuse of a third party or access by an unauthorized user. Can be reliably prevented.

FIG. 7 is a flowchart showing the interrupt processing routine of step a5. When the timer circuit 73 generates an interrupt, the page number (designated page number) N currently being displayed is read in step c1 and set to the display number L. The designated page number N in the non-display state is 0. Next, one is added to the display number L in step c2, and if the display number L exceeds the total number of pages P in step c3,
In step c4, if an interrupt occurs in the non-display state, the search for an image can be stopped in the next step c5, and if an interrupt occurs in the image display state, the presence or absence of an image on the first page can be searched. Display number L = 0.

Next, in step c5, N = L is determined, and the search is stopped when the search for the next image to be displayed has been completed, and the image display is stopped when there is no image data to be displayed in the display image storage area. Processing is in progress. Step c6
In, if no image data exists in the display image storage area corresponding to the display number L, the process returns to step c2 for displaying the next image.

If image data corresponding to the display number L exists in step c6, the display number L is set in the designated page number N in step c7, and the display processing of the image data corresponding to the designated page number N is performed in step c8. Execute At this time, the designated page number N is also written in the EEPROM 77 and used as an initial setting value at the next power-on.

FIG. 8 is a flowchart showing the display processing routine of step c8. First, in step d1, image data corresponding to the designated page number N is read into a print buffer set in the RAM 85, and in step d2, the recording head 30 conveys the magnetic display sheet 10 and performs magnetic recording based on the image data in the print buffer. I do.
In step d3, it is determined whether or not the recording operation for one page has been completed. When the operation is completed, the magnetic display sheet 10 is transported to the display area corresponding to the display window 2 in step d4.

In step d5, the display time of the image data corresponding to the designated page number N, that is, the timer designated time is read from a memory or the like, and in step d6, the display time is set in the timer circuit 73, and the time until the next timer interrupt is generated. The time is set, and the timer circuit 73 starts counting time in step d7. The current image display is continued until the next timer interrupt occurs, that is, until the display time set in the timer circuit 73 has elapsed.

As the image data to be displayed on the magnetic display sheet 10, all the image data obtained by reading one transmission original shown in FIG. 9 may be displayed, but the identification information is disclosed to a third party. Display ID designation area R
It is preferable to delete the image data of “a” and display only the image data of the remaining image region Rb, thereby improving the confidentiality (security) of the identification information.

In the above description, an example is shown in which only a display ID designation area, which is a part of a transmission original, is received first to detect the sender ID, then the ID is determined, and subsequent fax reception is interrupted. However, after receiving the image data of the entire transmission original, the ID determination may be performed, and then the subsequent image display may be stopped.
This is preferable in that the time until the determination can be reduced.

[0053]

As described above, according to the present invention, the identification information of the sender transmitted along with the image information is detected, and the identification information of the sender is compared and determined.
It can be determined whether or not the sender is a legitimate user. If the sender is not a valid user, the data reception processing is immediately stopped or the received data is processed as invalid data without displaying it. Since only image information transmitted from a legitimate user can be displayed as a still image on the magnetic display in this way, abuse or obstruction by a third party can be reliably prevented, and reliable image display can be realized. Further, since the security of the device is improved, a plurality of users can share one device.

Further, by adding the sender identification information to the transmission original, the integration of the image information and the sender identification information is enhanced, and the sender identification information is transmitted by a simple operation procedure similar to the facsimile transmission procedure. it can.

Further, since the sender identification information is recorded in a character, symbol, graphic, or bar code format, the sender identification information can be reliably identified.

By not displaying the information present in the identification information display area on the magnetic display, the confidentiality of the identification information is improved and the advertising effect is also improved.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an electronic information display device according to the present invention.

FIG. 2 is a partial perspective view showing an electronic information display device according to the present invention.

FIG. 3 is a partial sectional view showing a structure of a magnetic display sheet 10.

FIG. 4 is a block diagram showing an electrical configuration of the electronic information display device according to the present invention.

FIG. 5 is a flowchart showing an operation.

FIG. 6 is a flowchart showing a data processing routine of step a3.

FIG. 7 is a flowchart showing an interrupt processing routine of step a5.

FIG. 8 is a flowchart showing a display processing routine of step c8.

FIG. 9 illustrates examples of transmission originals.

FIG. 10 is an explanatory diagram of various setting information stored in an EPROM 76 and an EEPROM 77;

[Explanation of symbols]

 Reference Signs List 1 housing 2 display window 10 magnetic display sheet 20 erasing head 30 recording head 31 carriage 36, 63 motor 50, 60 roller 71 CPU 73 timer circuit 74 input / output circuit 80 interface circuit 85 RAM

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical indication // G09G 5/00 510 H04L 9/00 673A

Claims (4)

[Claims] 1. A writable and erasable display, recording means for forming a still image on the display based on image information transmitted from an external host device, and use of the device is permitted. Information registration means for registering the user identification information, and sender identification information detection means for detecting sender identification information transmitted from the external host device along with the image information. Comparing the sender identification information detected by the detection means with the registered identification information registered in the identification information registration means, and stopping the reception of the image information or the display of the still image when the two do not match. Electronic information display device. 2. The image information transmitted from the external host device is two-dimensionally scanned information of a transmission document including an image area in which a still image document is recorded and an identification information display area in which sender identification information is recorded. The electronic information display device according to claim 1, wherein: 3. The electronic information display device according to claim 2, wherein the sender identification information is recorded in a character, symbol, graphic, or barcode format. 4. The electronic information display device according to claim 2, wherein said recording means does not display information present in the identification information display area on a display.