JPH1020828A - Electronic information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic information display device capable of easily changing the display order of image stored in a storage device. SOLUTION: After FAX reception is started, image data transmitted in page unit are stored (b2-b5) in an input buffer, and the presence or absence of designation of the image display conditions is judged (b6). Next, a page designation number information is detected (b7), and the presence or absence of replacement page number information is judged (b8). If the replacement page number information is present, a page replacement process (b9) is executed to replace the same one as the replacement page number information and the same one as the page designation number information, among the designated page numbers stored in the designated information storage area of a page memory. Thus, the display order of plural picture data stored in the page memory is altered.

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]

To such an electronic information display device, image data is transmitted from an external host device such as a facsimile (FAX) device or a computer. For example, when a facsimile apparatus is used, image data is transmitted through a public line according to the G3 (group 3) standard or the G4 (group 4) standard.

When using a computer,
After reading the transmission original with a scanner device or creating the transmission original using original editing software,
It can be sent over a public line via an AX modem or RS232
It can be transmitted by serial communication such as C or parallel communication such as the Centronics standard.

[0007] The electronic information display device includes a storage device for storing a plurality of image data, and the image data transmitted from the external host device is temporarily stored in the storage device. Thereafter, the image data stored in the storage device is displayed on the magnetic display sheet according to predetermined display operation conditions.

In a conventional electronic information display device, of a plurality of image data stored in a storage device, which image is displayed, which image is not displayed, in what order, or which image is displayed. , And an image management method such as which image is unnecessary has not been established yet.

It is an object of the present invention to provide an electronic information display device that can easily change the display order of images stored in a storage device.

[0010]

SUMMARY OF THE INVENTION The present invention provides a writable and erasable display body, image storage means for storing a plurality of image information in page units, and a page order for displaying the image information. A display order storage unit for storing, a recording unit for reading out corresponding image information from the image storage unit in accordance with the page order stored in the display order storage unit, and forming the same as a still image on a display, An electronic information display device comprising: an image management unit configured to change a page order stored in the display order storage unit based on replacement page number information transmitted from a host device.
According to the present invention, since the page order stored in the display order storage means can be changed based on the replacement page number information from the external host device, the display order of the image information stored in the image storage means can be changed by a simple operation. Can be changed remotely. Therefore, when simply changing the display order, it is not necessary to newly transmit image information including a large amount of data from the external host device, and communication time can be saved. Note that as a display body on which writing and erasing can be performed, a magnetic display sheet using magnetophoresis or magnetic reversal, a photosensitive display sheet using an electrophotographic process, or the like can be used.

[0011]

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 installed below the rear surface transfer side of the magnetic display sheet 10 and, based on a print signal from an external host device (not shown), directs a dot matrix toward the surface of the magnetic display sheet 10. 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 larger than the sheet width. The erasing head 20 is arranged above the front transfer side of the magnetic display sheet 10 and 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. 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, applied to a substrate 11 made of a transparent material such as polyethylene terephthalate, and have a thickness of, for example, 400 to 1000.
A μm capsule coating layer 12 is formed.

A protective sheet 13 made of, for example, a polypropylene long-fiber nonwoven fabric is adhered to the back surface of the capsule coating layer 12 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 magnetic permeability material, a magnetic core 37 erected inside the yoke 39 and made of a high magnetic permeability material, 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 consisting 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 increased. 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 of 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 a new image is printed, 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. A clock circuit 91 for measuring today's date, day of the week and current time; an operation panel 75 including various switches and display LEDs (light emitting diodes); and an input / output (I
/ O) circuit 74 and an EPROM (Electrically Programmable Read Only) for storing programs and data.
Memory) 76 and an EEPROM (Erasable Electrically Programmable R) for storing data in a rewritable manner.
ead Only Memory) 77, a system control circuit 78 for performing management related to the entire apparatus such as display time management and initial operation control at power-on, and an interface circuit for performing communication with an external apparatus. 80, an interface (I / F) control circuit 79 for controlling the interface circuit 80, a motor control circuit 83 for controlling the number of rotations and the direction of rotation of the motors 36 and 63, and a head for controlling the operation of the recording head 30 A control circuit 84 and a RAM (Rand) for temporarily storing various data such as print data
om Access Memory) 85 and each of the memories 76, 77, 85
A memory control circuit 86 for controlling the use area of the motor 3
6, 63 and a driver circuit 88 for driving the recording head 30, 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 alarm circuit 90 includes a sound source such as a buzzer, a chime, and a speaker, and a light source such as a lamp and a light-emitting diode, and is connected to the input / output circuit 74.

FIGS. 5 to 10 are flowcharts showing the operation. First, in step a1 of FIG.
1 is an EPROM 76 as shown in FIGS.
Data is taken out of various setting information stored in advance in the EEPROM 77 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”. The timer value T is the time when the timer circuit 73 measures the timer interrupt 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 call arrives at step a2,
At step a3, a reception processing routine is executed. If a timer interrupt occurs in step a4, step a4
At 5, the interrupt processing routine is executed.

FIG. 6 is a flowchart showing the reception processing routine of step a3. First, in step b1, a storage designation area M for storing display image data and designation information accompanying the display image data is initialized to M = 0,
In step b2, the FAX modem 81 starts receiving FAX data. In step b3, it is determined whether reception of one page of image data has been completed. Until the image data reception is completed, the scanning line is scanned in step b4. Each time the data is received, the received data is stored in the input buffer set in the RAM 85 in step b5. When the reception of the image data for one page is completed, the process proceeds to step b6, and it is determined whether or not the received image data is a command transmission original designating image display conditions.

FIGS. 15 and 16 show an example of a command transmission document. FIG. 15 shows a command transmission document in which each piece of designated information and a replacement page number are written. FIG. 16 shows a command in which only the designated page number and a replacement page number are written. It is a transmission manuscript. In the command transmission document, a plurality of columns B6 that can be selected as filled or blank are regularly arranged, and are recorded in a mark sheet format that indicates the contents of the command by filling desired columns B6 with a pencil or the like. In the command transmission document, a command document mark BB indicating that the transmission image is a command transmission document specifying display conditions is recorded, and by determining the presence or absence of this portion, the display condition specification in step b6 is determined. The presence or absence has been determined. Various operation conditions such as image display conditions are described for each item, and as shown in FIG.
For example, the designated page number is “2” and the display start time is 8:00
0 minute, display end time is 17:00, day designation is Monday, Tuesday, Wednesday, Thursday and Friday, display period is January 01, end is October 01, and display time (timer) is 10 minutes , The replacement page number is designated as “3”. Note that a mark index BA is printed on an extension of each column B6 in the arrangement direction.

Returning to FIG. 6, a search is made for a command document mark BB for determining whether or not the document transmitted in step b6 is a command transmission document. As step b
At 7, the command data stored as image data in the input buffer is analyzed to detect various designated information such as designated page number information, display time information, display time zone information, display period information, and day of the week designation information. Here, the designated page number is a page number indicating the display order of images, the display time is a time for displaying the transmitted image, the display time period is a time period during which image display is allowed, and the display period is an image period. This is a period (per day) during which display is permitted, and the designation of the day of the week is a day of the week on which an image is displayed.

Further, in step b8, it is determined whether or not replacement page number information exists in the analyzed designated information. The replacement page number information is obtained by analyzing the page order of the image display that has already been set in step b7 and storing each specified information in the page memory set in the RAM 85,
This is changed in step b11. If there is no replacement page number information, the designated page number information is set in a variable M in step b10. On the other hand, if the replacement page number information exists, a page replacement processing routine is executed in step b9.

FIG. 7 is a flowchart showing a page replacement processing routine in step b9. First, step c1
In step 2, it is determined whether the obtained replacement page number information and the designated page number information match, and if they match, the process is terminated and the process proceeds to step b10. On the other hand, if the replacement page number information and the designated page number information do not match, the designated page number information and the same page number as the replacement page number information are selected from the designated page numbers stored in the designated information storage area in the RAM 85 in step c2. Search for the specified page number. Next, the number of the designated page number that matches the designated page number information is changed to the number of the replacement page number information, and the number of the designated page number that matches the replacement page number information is changed to the number of the designated page number information. That is, among the designated page numbers stored in the designated information storage area, the same page number information as the replacement page number information and the same page number as the designated page number information are replaced with each other.

FIGS. 12 to 14 are explanatory diagrams showing an example of the data format of the page memory. FIG. 12 shows a state before the designated page number is changed, FIG. 13 shows a state after the designated page number is changed, and FIG. The information and the display image data after the change are shown. The page memory set in the RAM 85 is
For example, it has a storage capacity for storing specification information and display image data for eight pages.

In FIG. 12, for example, looking at the designated information of the second page, the designated page number is "2" and the display time is "3".
0 ”minutes, and the display time zone is“ 8:00 to 17:00
Minutes ", the display period is" January 1 to February 1 ", the day designation is" 0000011 "which means Friday and Saturday,
Various conditions such as are set. Looking at the designated information on the third page, the designated page number is “3”, the display time is “10” minutes, and the display time zone is “8:00 to 17:00”.
Minutes ", the display period is" January 1 to September 1 ", and the day designation is" 0 "meaning Wednesday, Thursday, Friday and Saturday.
001111 ", etc. are set.
A display image storage area for storing display image data is prepared so as to correspond one-to-one with such designation information.

Next, when a command transmission document whose designated page number information is “2” and replacement page number information is “3” shown in FIG. 16 is transmitted from an external host device, as shown in FIG. The designated page number in the designated information of the second page is changed to "3", and the designated page number in the designated information of the third page is changed to "2". Other various conditions are not specified, and are kept as they are. Thus, the designated information stored in the page memory is rewritten by the replacement page number information.

At this time, if the command transmission document shown in FIG. 15 is transmitted from the external host device instead of the command transmission document shown in FIG. 16, after changing the page, the various designation information specified by the command transmission document is replaced. The information is stored as designation information of the area indicated by the designated page number.

Here, an example in which image data for eight pages is stored has been described. However, 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 image storage pages and the initial number can be reduced. The total number of pages in the settings can be increased.

Returning to FIG. 6, when the page replacement process in step b9 is completed, in step b10, the designated information analyzed and detected in step b7 is stored in the page memory set in the RAM 85, and the variable The designated page number information is set in M, and if the transmission data of the next page exists in step b12, the process returns to step b3 to receive the transmission original of the next page by FAX. If the transmission data of the next page does not exist, the facsimile reception is terminated in step b13 and the line is disconnected.

On the other hand, if the display condition is not specified in step b6, the process proceeds to step b14 to determine whether or not the storage specification area M is specified, that is, M = 0. If it is determined that there is no free area, a free area check routine for checking the free area of the display image storage area is executed in step b15.

FIG. 18 shows an example of an image transmission original. If the command document mark BB does not exist in the transmission document, the display condition is not specified, and the command image mark BB is stored as display image data in the display image storage area of the specified page number of the storage specification area M.

For example, when two pages of transmission originals shown in FIGS. 15 and 18 are continuously received by facsimile, first, the designated page number "2" designated by FIG. 15 and the display time (timer) are 10 minutes. "10" indicating display, 8 during display time
"0" to specify the display time zone from 0:00 to 17:00
800 1700 ", and a display period from January 1 to October 1 is designated as the display period" 0101 100
"1", the designation "0111110" for displaying on Monday, Tuesday, Wednesday, Thursday and Friday for designation of the day of the week, and the replacement page number "3" are analyzed and detected. Next, since the replacement page number is designated, the page numbers of the second page designated by the designated page number and the third page designated by the replacement page number are exchanged as shown in FIG. Then, the specified information analyzed and detected is stored as shown in FIG. Next, in the display image storage area, the image data shown in FIG. 18 transmitted following the command transmission document is stored in the display image storage area of the designated page number “2” as shown by “star illustration” in FIG. Is done. As shown in FIG. 14, the designated page number becomes effective after being changed by replacement designation.

On the other hand, if the storage designation area M is designated, that is, if M ≠ 0, the number of the storage designation area M is used as it is as the page number of the page memory without checking the free area in step b15. You.

FIG. 8 is a flowchart showing a free area check routine in step b15. First, at step d1, a variable L = 1 is set, and at step d2, the number of pages L is set.
It is determined whether or not the display image storage area corresponding to is empty, and if it is empty, the process jumps to step d6 and substitutes the variable L for the location indicating the empty area, that is, the storage designated area M, and ends.

On the other hand, if the display image storage area of the page number L is not empty at step d2, the variable L is set to 1 at step d3.
In step d4, it is determined whether or not the variable L has exceeded the total page number P, and step d2 is repeated until the variable L exceeds the total page number P. If there is no free area in all pages, a variable L = 0 is set in step d5, and a storage designation area M = 0 meaning no free area is set in step d6, and the process ends.

Returning to FIG. 6, the image data in the input buffer is stored in the display image storage area corresponding to the storage designation area M in step b16. The old image data stored in the display image storage area is replaced by overwriting and erased. When M = 0, there is no free area, and the image data in the input buffer is discarded. Next, at step b17, the storage designated area M is incremented by one, and at step b17, it is determined whether or not the storage designated area M is larger than the total number of pages P. If M> P, the process returns to the first page and returns to the first page. The storage designation area M is set to 1 so that data can be stored, and the process proceeds to step b12.

When the reception processing routine of FIG. 6 ends, the process returns to step a4 of FIG. In this way, command data indicating various conditions is analyzed from the image data of the transmission original,
Image display conditions and the like are stored in the RAM 85.

FIG. 9 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 displayed is read in step e1 and set to the display number L. The designated page number N in the non-display state is 0. Next, at step e2, the display number L is incremented by one. Next, at step e3, when the display number L exceeds the total number of pages P, when an interrupt occurs in the non-display state, at the next step e5, the image is displayed. In step e4, the display number L is set to 0 so that the search can be stopped, and if an interrupt occurs in the image display state, the presence or absence of the image of the first page can be searched.

Next, at step e5, L = N is determined, and
When the search for the next image to be displayed has completed one round, the search is stopped and an image display stop process is performed when there is no image data to be displayed in the display image storage area. In step e11, an interrupt timer is set in preparation for the next display. After a reset, it has restarted. In step e6, if no image data exists in the display image storage area corresponding to the display number L, the process returns to step e2 for displaying the next image.

If image data corresponding to the display number L exists in step e6, a display permission check routine is executed in step e7 to determine whether or not display of the image data is permitted. The return value of the display permission / inhibition check routine is a display flag DF. DF = 1 when display is permitted and DF = 0 when display is prohibited. Step e
In step 8, the display flag DF is determined. If DF = 0, nothing is displayed and the process returns to step e2. If DF = 1, the display number L is set to the designated page number N in step e9, and display processing of the image data corresponding to the designated page number N is executed in step e10. At this time, the designated page number N is E
It is also written in the EPROM 77 and used as an initial setting value at the time of the next power-on.

By adding the variable L one by one, the display image data in the page memory is displayed in the order of the corresponding designated page number.

FIG. 10 is a flowchart showing a display processing routine of step e10. First, step f1
Then, the alarm circuit 90 is operated, for example, by turning on a rewrite display lamp to call attention to a pedestrian. Then, the image data corresponding to the designated page number N is read into the print buffer set in the RAM 85, and step f2 is executed. In, the recording head 30 performs magnetic recording based on the image data in the print buffer while transporting the magnetic display sheet 10. In step f3, 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 f4.

Next, after the rewriting display lamp is turned off in step f5, the display time of the image data corresponding to the designated page number N, that is, the timer designated time is read from the RAM 85, and this display time is read in the timer circuit 7 in step f6.
Set to 3 to set the time until the next timer interrupt, and the timer circuit 73 starts the timing operation in step f7. 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.

FIG. 11 is a flowchart showing a display permission / inhibition check routine of step e7. First, at step g1, a display flag DF = 0 is set as a default (default value).
Is set, and in step g2, it is determined whether or not today's date falls within the display period designation range corresponding to the display number L. Note that today's date, day of the week, and current time are obtained by referring to a clock circuit 91 as shown in FIG. If the display period designation is appropriate, it is determined in step g3 whether today's day of the week matches the day designation. If the day specification is appropriate, it is determined in step g4 whether the current time is within the display time zone. When all of the display period, the day of the week, and the display time period among the image display conditions are satisfied, step g
In step 5, the display flag DF = 1 is set, and the process returns to step e8. If even one of the image display conditions is not satisfied,
The process returns with the display flag DF = 0.

On the other hand, if it is out of the range of the display period in step g2, it is determined in step g6 whether or not the display period has passed at present, and if it has passed, the display image corresponding to the display number L is stored in step g7. Clear all image data and specified information in the area.

As described above, in the receiving process of FIG.
X When storing the received image data in the page memory,
Detect the designated page number sent with the image data,
The designated page is set in the storage designated area M, and the display image data is stored at the corresponding page position in the page memory.

If the transmitted image data includes replacement page number information, the designated page number stored in the page memory is replaced to change the page order of the image displayed on the magnetic display sheet 10. Can be changed.

[0060]

As described above in detail, according to the present invention, when a plurality of pieces of image information are displayed in a predetermined page order, the page order can be changed based on replacement page number information from an external host device. The display order of image information can be changed remotely with a simple operation. Therefore, when simply changing the display order, it is not necessary to newly transmit image information including a large amount of data from the external host device, and communication time can be saved.

[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 reception processing routine of step a3.

FIG. 7 is a flowchart showing a page replacement processing routine in step b9.

FIG. 8 is a flowchart showing a free area check routine in step b15.

FIG. 9 is a flowchart showing an interrupt processing routine of step a5.

FIG. 10 is a flowchart showing a display processing routine of step e10.

FIG. 11 is a flowchart showing a display permission / inhibition check routine of step e7.

FIG. 12 is an explanatory diagram showing an example of a data format of a page memory, and shows a state before a designated page number is changed.

FIG. 13 is a diagram illustrating an example of a data format of a page memory, after a designated page number is changed.

FIG. 14 is a diagram illustrating an example of a data format of a page memory, showing an example in which each designated information and display image data are changed after a designated page number is changed.

FIG. 15 is an example of a command transmission document in which each piece of designation information and a replacement page number are described.

FIG. 16 is an example of a command transmission document in which only a designated page number and a replacement page number are described.

FIG. 17 is an explanatory diagram showing an example of various setting information stored in an EPROM 76 and an EEPROM 77.

FIG. 18 is an example of an image transmission document.

19 is an example of data of a clock circuit 91. FIG.

[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

Claims (1)

[Claims] 1. A writable and erasable display body, an image storage means for storing a plurality of image information in page units, and a display order storage means for storing a page order for displaying the image information. Recording means for reading out corresponding image information from the image storage means in accordance with the page order stored in the display order storage means and forming it as a still image on a display; and a replacement page transmitted from an external host device An electronic information display device comprising: an image management unit for changing a page order stored in the display order storage unit based on number information.