JPH03284044A - Electronic information reader/writer - Google Patents

Abstract

PURPOSE:To realize an electronic blackboard by providing an original read means, a means writing an signal to a medium, a means reading a signal and a means writing a signal onto paper to the reader and writer. CONSTITUTION:An original 21 is optically read by a linear sensor 22, the read signal is converted into a digital electric signal and inputted to an ink jet writer 24. A blackboard sheet 31 is driven by a motor synchronously with the read speed of the sensor 22 and the information of the original is printed out on a sheet 31 with magnification. Water soluble ink is employed and the sheet 31 is Mylar film or the like and easily erased. A light from a fluorescent lamp 41 is projected onto a lens 42 and a linear sensor 43, where the light is converted into an electric signal and a pattern is constituted synchronously with the feeding speed of the sheet 31. The signal is inputted to a printer 40 and printed out on paper 46. Through the constitution above, the electronic blackboard copying the picture information written on the screen onto recording paper is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a so-called electronic whiteboard capable of copying image information written on a screen onto recording paper.

[Prior Art] Conventionally, the basic configuration of an electronic blackboard device for copying information written on a blackboard has been disclosed in Japanese Patent Publication No. 62-56000 and the like.

Furthermore, in Japanese Patent Application Laid-open No. 62-109080, a board writing device reads an image on a screen and an image on a conveyed document by moving one optical system that focuses the images on a reading means. Disclosed.

Further, an electronic blackboard device having communication (FAX) II functionality is also disclosed.

Other models with similar effects include wide enlargement copying machine, ○HP
, video conferencing systems, etc.

[Problem to be solved by the invention] (11 Enlarging and displaying information on a small-sized manuscript (at most A3) to emphasize the information.

Currently, commercially available "electronic blackboards" read an A3-size manuscript and display (write) it on the blackboard.
There is no function. Therefore, it has not been possible to enlarge and display the contents of A3 or A4 manuscripts or books on a blackboard for use in meetings, conferences, or presentations. By creating content to be expressed on a small piece of paper in advance and enlarging it on a blackboard, you can emphasize information and make meetings and meetings more effective.

(2) Ability to erase enlarged/displayed information.

Information once displayed on the blackboard can be partially corrected and added, making it possible to immediately reflect changes that occur during a meeting or meeting, making it more efficient. In other words, you can process manuscript information on the blackboard.

(3) Outputting information from a handheld manuscript onto the other party's blackboard from a remote location.

If you use an electronic blackboard (communication blackboard) with a fax machine, you can send your manuscript to the other party, but you cannot display it on the other party's blackboard, and even when holding a video conference, you can send the other party's information. Being able to display, modify, and add information on the electronic blackboard improves visibility and improves convenience.

A first object of the present invention is to provide an electronic information reading/writing device that achieves the above problems (1) to (3).

Furthermore, in the board writing device disclosed in Japanese Patent Application Laid-Open No. 62-109080, the optical system is of a movable type, so there is a problem in that the accuracy of the imaging characteristics of the reading device is difficult to obtain.

For example, the length of the screen to be read in the short direction is A
Assuming that the O short side (841 mm) and the reading length of the reading element (for example, line type C0D) are 35@lotus, the reduction ratio is about 1/24. On the other hand, change the width of the transported document to A4 short side (210m).
@), in this case, the reduction ratio is approximately 1/6. In this case, generally the optical system with a larger reduction ratio is required to have stricter accuracy.

Furthermore, since the image is formed on the line of the reading element, fluctuations in the posture accuracy (mainly tilting, etc.) of the lens must be suppressed.

As described above, the imaging optical system for the reading element is required to have higher accuracy than the analog optical system of a general copying machine.

Therefore, it is not possible to satisfy the required accuracy by using a moving optical system or a zoom lens as in this reference.

Therefore, the problems to be solved in the above-mentioned prior art are as follows: (1) The imaging optical system, which requires more precision, should be of a fixed type so that high precision during assembly can be maintained.

■For the other optical system, the movable part should be a mirror to ensure high accuracy.

(2) To eliminate the need for the user to perform special selection operations when reading two separate pieces of image information (improving the operability of the device).

To read the image on the blackboard, have the child press the print button,
When reading a sheet original, the user can simply insert the sheet, which greatly simplifies the user's operation.

■Output information to each other's blackboard or paper from a remote location (addition of communication function to the device).

Since there is only one reading element, even if the signal is sent to a remote party, whether it is information on a blackboard or a manuscript, it can be processed uniformly, so make the device equipped with a fax function. If so, it is easy and reasonable.

A second object of the present invention is to provide an electronic information reading/writing device that is highly reliable, can provide the necessary accuracy at low cost, has good operability, and has a communication function in view of the above-mentioned problems (1) to (3). There is a particular thing.

[Means for Solving the Problem] In order to achieve the first object, the electronic information reading/writing device according to claim 1 has a reading means for reading manuscript information, and an elongated writing surface that can be written on with a writing instrument. It is characterized by comprising a writing medium, a writing means for writing the read information on the writing medium, a reading means for reading the information on the writing medium, and a writing means for writing the read information on paper.

Further, the electronic information reading/writing device according to claim 2 transmits an electric signal output from a reading means for reading manuscript information or a reading means for reading information on a writing medium to a remote location, and also transmits an electric signal from a remote location. The present invention is characterized in that it has a communication device that receives the received electrical signal, and a writing device that writes the received electrical signal on a writing medium or a device that inputs the received electrical signal to a writing device that writes it on a paper.

Further, in order to achieve the second object, the electronic information reading/writing device according to claim 3 provides a writing medium having a long writing surface that can be written on with a writing instrument, reading manuscript information, and reading the manuscript information on the writing medium. It is characterized by comprising a reading means for also reading image information, a writing means for writing the read information on the writing medium, and a writing means for writing the read information on the paper.

Further, the electronic information reading/writing device according to claim 4 has two lens optical systems in the reading means according to claim 3,
The optical path is shared between each lens and the reading sensor, and after the document information passes through the lens, the optical path is refracted and merged via a reflective member, and the image information on the writing medium passes through the lens and reaches the reading sensor without being refracted. It is characterized by being introduced into the computer and reading information.

Furthermore, the electronic information reading/writing device according to claim 5 includes a communication device that transmits the electrical signal output from the reading means according to claim 3 to a remote location, and receives the electrical signal transmitted from the remote location. It is characterized by having a means for inputting the received electrical signal to a writing means for writing on a writing medium or a writing means for writing on a paper.

[Example] The present invention will be explained in detail below.

FIG. 1 is an external view of a first embodiment of the present invention.

In FIG. 1, numeral 1 is the main body of the device, numeral 2 is the blackboard surface,
Reference numeral 3 indicates a step for placing a writing instrument and blackboard eraser, reference numeral 4 indicates an operating section for reading, printing, and transmission/reception, reference numeral 5 indicates a paper outlet of the printing device (writing device), and reference numeral 6 indicates a document reading section (first reading section). ) are shown respectively. Note that the paper outlet 5 may be provided inside the paper case 7.

FIG. 2 is a diagram showing the internal configuration of the device shown in FIG. 1. The internal structure of the device can be roughly divided into 5 blackboard sheets 31,
It is classified into five parts: a first reading section 22, a first writing section 24, a second reading section 43, and a second writing section 45.

First, writing of manuscript information on the blackboard sheet 31 will be described. Document information on the document 21 is optically read by a line-type image sensor 22 and converted into a digital electrical signal. This signal is transmitted through a cable 23 and input to an inkjet type writing device 24. The signal is converted into an electric signal as one line in the horizontal direction, and the screen is configured as a vertical electric signal synchronized with the feeding speed of the document in the vertical direction. The blackboard sheet 31 is moved by the motor 32 in synchronization with the reading speed of the original 22, and the original information is enlarged and printed on the blackboard sheet 31. The ink used in this inkjet device is a water-soluble or semi-water-soluble ink, considering that it can be erased. The reason why an inkjet device is used as the writing means here is that the inkjet method is suitable for realizing wide writing with a small device, and it is also easy to use water-soluble or semi-water-soluble ink. This is because it is possible.

In this way, the information on the original 21 is written on the blackboard sheet 31, and the motor 32 is stopped. The blackboard sheet 31 is made of Mylar film, fluorine coated film, etc., and written information can be easily erased with a blackboard cleaner. By being able to erase information that has been enlarged and displayed on the blackboard in this way, it is also possible to partially modify or add information once displayed on the blackboard, allowing changes that occur during a meeting or meeting to be immediately reflected, making it more efficient. This means that the manuscript information can be edited on the blackboard. Additionally, the blackboard sheet can be recycled.

Reading information on the blackboard sheet 31 will be explained. The information on the blackboard sheet 31 is sent upward in FIG. 2 by the rotation of the motor 32. The light illuminated by the fluorescent lamp 41 passes through a lens 42 and is projected onto a line image sensor 43.

The configuration of the screen here is similar to the first read/write, where the horizontal direction is converted into an electrical signal as one line,
In the vertical direction, the screen is configured as a vertical electric signal synchronized with the feeding speed of the blackboard sheet 31. This signal is transmitted through a cable 44, input to a printing device (writing device) 45, and printed on a paper 46. In this example, 1
, a thermal transfer printing device is used.

FIG. 3 shows a control block diagram of the electronic information writing device of the first embodiment.

The image information on the blackboard sheet 31 is illuminated with a fluorescent light 41, and the reflected light passes through mirrors 61, 62 and lenses 42 and is projected onto a line image sensor 43. The image information is photoelectrically converted by the line type image sensor 43, and the analog output of the reading circuit 51 is converted into binary data by the encoding/decoding circuit 52.
Or convert it into multivalued digital image data. The above reading operation is performed while the blackboard sheet 31 is being moved.

On the other hand, the inserted original 21 is read while being transported by the original transport rollers 63 and 64, and the original information is read using the fluorescent lights 22-
2, passes through a rinser 22-3, and is projected onto a line type 1-magnification image sensor 22-1. The image information is photoelectrically converted by the line-type equal-magnification image sensor 22-1, and the analog output of the reading circuit 51 is converted into binary or multivalued digital image data by the encoding/decoding circuit 52, as described above.

Further, blackboard information is copied using a thermal transfer method.

While the roll paper 69 is pulled by the conveyance roller 70, the serial write data from the write control circuit 58 is energized and heated by the thermal head drive circuit 45-2 including a shift register latch driver, and is copied.

At this time, the ink ribbon 68 is wound up synchronously.

Writing on the blackboard is performed by controlling the ejection of ink from the nozzle 24-1 using write data from the write control circuit 58 via the inkjet drive circuit 24-2. The above steps are performed while the blackboard sheet 31 is being moved.

In addition, the blackboard sheet 31. Motors 32, 65, 67, and 66 that drive the document conveyance roller 63, the roll paper conveyance roller 70, and wind up the ink ribbon 68, respectively.
A motor drive circuit 57 is provided which drives the motor at a constant speed based on a signal from a control circuit 55.

A control circuit 55 having a microcomputer is in charge of controlling each of the above-mentioned circuits, and controls the sequence and timing.

The data from the above-mentioned encoding/decoding circuit 52 can be directly transferred to the write control circuit 58 and copied, or can be stored in the storage circuit 54, making it possible to copy multiple sheets with one scan of the original. . It is also equipped with a modem 53, which directly transmits the written content of the manuscript 21 or the blackboard 2 (blackboard sheet 31) through a public line such as the telephone line 59, and receives the written content of the blackboard at a remote location and writes it on the blackboard 2. It also becomes possible to make copies using the printer 45. The storage circuit 54 also functions as a buffer memory for timing adjustment at that time.

Next, an embodiment that can provide the necessary accuracy at low cost, has good operability, and has a communication function will be described.

FIG. 4 is an external view of a second embodiment of the present invention.

In FIG. 4, numeral 1 indicates the main body of the device, numeral 2 indicates the blackboard surface,
Reference numeral 3 indicates a step for placing a writing instrument and blackboard eraser, reference numeral 4 indicates an operating section for reading, printing, and sending/receiving, reference numeral 5 indicates a paper ejection opening for the printing device (writing device), and reference numeral 6 indicates a step to the original reading section (reading section). FIG. 5 is a diagram showing the internal structure of the device shown in FIG. 4. FIG.

The internal configuration of the device can be roughly divided into a blackboard surface sheet 131,
reading unit] 22, a first writing unit 124, and a second writing unit 124;
The writing section 145 is classified into four parts.

FIG. 6 is a schematic cross-sectional view showing this embodiment in which a single reading section 122 serves as the first reading section and the second reading section in the first embodiment, and FIG. 7 shows another configuration example in that case. FIG.

First, writing of manuscript information on the blackboard sheet 131 will be described. , the original 121 is connected to the line image sensor 1
22 optically reads the document information and converts it into a digital electrical signal. This signal is transmitted by cable 123
is transmitted to an inkjet type writing device 124.
is input. The signal is converted into an electric signal as one line in the horizontal direction, and the screen is configured as a vertical electric signal synchronized with the feeding speed of the document in the vertical direction. Manuscript! The blackboard sheet 131 is moved by a motor 132 in synchronization with the reading speed of 21, and the original information is enlarged and printed on the blackboard sheet 131. The ink used in this inkjet device is a water-soluble or semi-water-soluble ink, considering that it can be erased.

In this way, the information on manuscript 12 is written on the blackboard and notes 131, and in the evening 132 returns home. Blackboard sheet 13
1 is made of Mylar film, fluorine coated film, etc., and the written information can be easily erased with a blackboard eraser.

In the embodiment shown in FIGS. 5 and 6, the original 12
The imaging optical system for one reading is an exposure lamp (fluorescent lamp) 12
5. Mirror 128.127. lens 126, mirror 14
6a. That is, the two mirrors 146a are made movable,
When reading the information on the blackboard 131, it is set aside, and is activated and reflected only when reading the information on the sheet document.

As a result, the original image illuminated by the exposure lamp (fluorescent light) 125 is transferred to the mirrors 128, 127, and the lens 126. The driving source 80 for the mirror 146a, which is projected onto the image sensor 133 via the mirror 146a, may be a plunger type solenoid or a rotary type solenoid.

The embodiment shown in FIG. 7 has a movable mirror 146a as described above.
In this example, a fixed dichroic mirror 146b is used so as not to cause deterioration in accuracy. In this case, since there is no movable member, the accuracy of the entire optical system can be improved.

Next, reading and writing information on the blackboard sheet 131 will be explained. The information on the blackboard sheet 131 is sent downward in FIG. 5 by the rotation of the motor 132. fluorescent light 14
The light image illuminated on the image sensor 1 reaches the image sensor 122 through the mirrors 143 and 144 and the lens 142. The screen configuration here is similar to the reading/writing mentioned above.
The horizontal direction is converted into an electrical signal as a single line, and the vertical direction is constructed as a vertical electrical signal synchronized with the feeding speed of the blackboard sheet. This signal is cable 1
23, the writing device t(
The data is sent to a thermal recorder 145 and written on a recording paper 146.

FIG. 8 shows a control block diagram of the electronic information writing device of this embodiment.

Illuminating the image information on the blackboard sheet 131 with a fluorescent light 141,
The reflected light passes through mirrors 143 and 144 and lens 142 and is projected onto line image sensor 122. One or more reading operations in which the image information is photoelectrically converted by the line-type image sensor 122 and the analog output of the reading circuit 151 is converted into binary or multivalued digital image data by the encoding/decoding circuit 152 are performed on the blackboard sheet. 131
Do this while moving.

On the other hand, the inserted original 121 is read while being transported by the original transport roller 130.The original information is illuminated with a fluorescent lamp 125, passes through mirrors 128, 127, and a lens 126, and
The image is projected onto a line type image sensor 122 of equal magnification. The image information is photoelectrically converted by the line-type equal-magnification image sensor 122, and the analog output of the reading circuit 151 is converted into binary or multivalued digital image data by the code/composite circuit 152, as described above.

Furthermore, the blackboard information is copied using a thermal method. While the roll of thermal paper 169 is being pulled by the conveying roller 166, the serial write data from the write control circuit 158 is heated by applying electricity to the thermal head l 45-1 by the thermal head drive circuit 145-2 equipped with a shift register, latch, and driver. Make a copy.

To write on the blackboard, write data from the write control circuit 158 is transferred to the inkjet drive circuit 124-2.
Eight or more operations are performed while the blackboard sheet 131 is moving by controlling the ejection of ink from the nozzle 124-1 via the blackboard sheet 131.

The motor 1 drives the blackboard sheet 131, the original transport roller 163, and the roll paper transport roller 166, respectively.
32, 165, and 167 at a constant speed.

A control circuit 155 having a microcomputer is in charge of controlling the above circuit, and controls the sequence and timing.

The data from the encoding/decoding circuit 152 described above may be directly transferred to the write control circuit 158 and copied, or the data may be transferred to the storage circuit 1.
54, and it is possible to make multiple copies even with one scan of the original. It is also equipped with a modem 153 and can directly transmit the manuscript 121 or the contents written on the blackboard 2 through a public line such as a telephone line 159, receive the contents written on the blackboard at a remote location, write it on the blackboard 2, or copy it with the printer 145. becomes possible. The storage circuit 154 also functions as a buffer memory for timing adjustment at that time.

In the selective reading of image information, normally the image information on the blackboard sheet 131 is read, and the switching operation of the lens optical system of the reading means is performed based on an insertion signal indicating that the original 121 is inserted into the original reading section. By doing this, whether the user is reading the original 121 or the image on the blackboard 2, the user can easily perform the operation by simply pressing the print button without being conscious of it. Furthermore, when reading a sheet document, the user can complete the reading operation simply by inserting the document.

[Effect of the invention] As explained above, according to the invention of claim 1,
Enlarge and display information on small-sized documents to emphasize information. That is, the content of A3 or A4 manuscripts or books can be enlarged and displayed on a blackboard and used for meetings, conferences, and presentations, making it possible to emphasize information and making meetings and meetings more effective.

Furthermore, it is possible to copy the results of meetings and meetings, and it has the same effect as a conventional electronic blackboard.

Further, according to the invention as claimed in claim 2, it is possible to output information from a handheld manuscript to the other party's blackboard from a remote location, and the other party's information can be displayed on the electronic blackboard, and both parties can make corrections and additions. This also improves visibility and convenience.

In addition, the original and blackboard information can be output to the blackboard or printer, allowing information to be exchanged.

Furthermore, since it is not read through a scanner at that time,
There is no generation that occurs when an electronic blackboard is combined with a fax machine or an enlarged copying machine, and there is no image deterioration due to information transfer.6 Furthermore, according to the invention as claimed in claim 3, only one reading element is required, and wiring can be reduced. Therefore, the price of the reading section can be reduced, and the entire device can also be made inexpensive. Furthermore, since there is a single read signal input section, signal processing is simplified and the reliability of the device is increased. Furthermore, since it is equipped with a writing surface, it can be used as a display device for enlarging and displaying small-sized originals.

Furthermore, the invention as claimed in claim 4 uses a fixed type optical system for the optical system that requires relatively high accuracy, and uses a switching type for the other optical system, so that the configuration itself is a reasonable one that guarantees the required accuracy. It has become.

Further, according to the fifth aspect of the present invention, the information on the blackboard can be easily written on the blackboard or paper of a remote party and transmitted.

[Brief explanation of the drawing]

FIG. 1 is an external view of the first embodiment of the present invention, FIG. 2 is a diagram showing the internal configuration of the first embodiment, FIG. 3 is a diagram showing the control section of the first embodiment, and FIG. 4 is a diagram of the main body. External view of the second embodiment of the invention, fifth
The figure shows the internal configuration of the second embodiment, FIGS. 6 and 7 each show a more detailed internal configuration, and FIG. 8 shows the internal configuration of the second embodiment.
It is a figure showing the control part of an example. 31.131-one blackboard sheet, 22-first reading section, 122-reading section, 24.124-first writing section, 43-second reading section, 45145-second writing section. 1 Al1 type 4 eyes type 6 holes f5' and wholesale

Claims (1)

[Claims] 1. A reading means for reading manuscript information, a writing medium having a long writing surface that can be written on with a writing instrument, a writing means for writing read information on the writing medium, and information on the writing medium. An electronic information reading/writing device comprising: a reading means for reading the information; and a writing means for writing the read information on paper. 2. A communication device that transmits an electrical signal output from a reading means for reading manuscript information or a reading means for reading information on a writing medium to a remote location, and also receives an electrical signal transmitted from a remote location; 2. The electronic information reading/writing device according to claim 1, further comprising a writing means for writing the received electrical signal on a writing medium or a means for inputting the received electric signal to a writing means for writing on a paper. 3. A writing medium having an elongated writing surface that can be written on with a writing instrument, a reading means for reading manuscript information and also reading image information on the writing medium, and a writing device for writing the read information on the writing medium. 1. An electronic information reading/writing device comprising: a means for writing read information on paper; and a writing means for writing the read information on paper. 4. The reading means according to claim 3 has two lens optical systems, each lens shares an optical path between each lens and the reading sensor, and the document information passes through the lens and then refracts the optical path through a reflecting member to merge. 4. The electronic information reading/writing device according to claim 3, wherein the image information on the writing medium is introduced into the reading sensor without being refracted after passing through a lens, and the information is read. 5. A communication device for transmitting the electrical signal output from the reading means according to claim 3 to a remote location and for receiving the electrical signal transmitted from the remote location; and a writing device for writing the received electrical signal on a writing medium. 4. The electronic information reading/writing apparatus according to claim 3, further comprising means for inputting information to a writing means for writing on paper.