JPS63303569A - Display board - Google Patents

Abstract

PURPOSE:To record only a necessary part by putting a mark on an original in order to read only the necessary part of the original, and reading this mark. CONSTITUTION:A reading means to read picture information on the original is provided with a sensor 30 to detect the mark, recorded on the original. The mark is recorded previously on the original, correspondingly to the part, necessitated to be recorded. A recording part 6 records the picture information, drafted in a area on the original, indicated by the mark, detected by the sensor 30, in a large-sized recording medium. The picture information on the original is obtained from a CCD image sensor 20 in the reading means.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a display board capable of storing image information in a storage device and recording the image information on a large-sized display medium.

(Prior Art) Recently, electronic blackboard devices that automatically read the content on a blackboard screen and record it on paper have been used in meetings, etc., to improve the efficiency of meetings. Or, it is used for explanations at exhibitions, etc.

(Problems to be Solved by the Invention) However, during the course of a meeting, it often takes time to write on the blackboard screen, which impedes the smooth flow of the meeting.

Additionally, OHP equipment is sometimes used for meetings, but in addition to requiring extra labor to create the OHP film, installing the OHP equipment, which is an optical device, in the conference hall requires I had to make adjustments to the lighting, etc. for the meeting. In order to solve these problems, display boards have recently been devised that allow small-sized originals to be enlarged and recorded on the writing surface. However, in this invention, since the entire manuscript is recorded, there is a problem that even unnecessary contents are recorded on the writing surface during explanation.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention records marks on a document in order to record only necessary parts of the document, and provides a sensor for reading the marks in the document reading section. It was established.

(Operation and Effects of the Invention) With this method, it is possible to specify the parts of the manuscript that are considered necessary for explanations etc. by marking them, and only the specified range is recorded on the large recording medium. This has the effect of increasing the efficiency of meetings, etc., since unnecessary notation is not made on the writing surface.

(Example) Hereinafter, the present invention will be explained with reference to FIGS. 1 to 6 showing an example embodied in an electronic blackboard.

This embodiment mainly includes a document reading section 5 corresponding to a reading means for reading image information of a document 23, a recording section 6 corresponding to a recording means for recording the image information on a large notation medium, and a recording section 6 serving as a large notation medium. It is composed of a sheet 15 and a sensor 30 corresponding to a detection means for detecting a mark 13 on a document 23.

A pair of upper and lower sheet winding drums 7a and 7b are supported in parallel at both ends of a rectangular annular frame 1 having a pair of left and right legs 4, and are rotated in forward and reverse directions by a motor (not shown) as a driving means. Both ends of a sheet 15 serving as a large writing medium are wound into rolls on both drums 7a and 7b, respectively. Further, in the frame IQ front opening 3, it is possible to write on the writing surface 15a of the sheet 15. A board 14 for supporting the sheet 15 is provided opposite the opening 3.

A sheet 15 is stretched horizontally between guide rollers 12a and 12b, and a recording section 6 is disposed in that portion. The recording unit 6 includes a donor sheet 8 and a thermal head 10.
, platen 11, thermal head pressing mechanism (not shown)
It consists of

A sheet 15 is placed between the thermal head 10 and the platen 11.
and a donor sheet 8, and the thermal head 10 is configured to press the sheet 15 and the donor sheet 8 by the pressing mechanism during recording. The drum 7a and the platen 11 rotate synchronously, and the sheet 15
and the donor sheet 8 can be conveyed. The donor sheet 8 used here has a thermal head 1 placed on the sheet 15.
An ink that can be transferred by 0 and easily erased with a blackboard eraser is used. The donor sheet 8 is wound around a drum 9a, moves as the sheet 15 moves during recording, and is wound around a donor sheet winding drum 9b.

As shown in FIG. 3, the document reading section 5 includes a light source 17, a mirror 18, a lens 19, a CCD image sensor 20, a control circuit 21, and document feed rollers 24a and 24b. The manuscript 23 that entered the manuscript reading section population 27 is
Paper feed roller 24a driven by a motor (not shown)
, 24b at a constant speed, the document receiver is fed to the unit 16. Here, marks 13 for designating the start and end points of reading are written on both ends or one end (in this case, the left end) of the document 23 with a writing object such as a pencil, or by pasting a sticker or the like. Said mark 1
3 is detected by a sensor 30 (not shown) disposed between document feed rollers 24a and 24b, and only the range between the marks 13 is read. A light source 17 for irradiating light onto the original 23 is disposed facing the original 23, and the reflected light obtained by the irradiation is converged by a lens 19 via a mirror 18.

This light beam is imaged on the CCD image sensor 20 and converted into an electrical signal, which is controlled by a control circuit 21 and sent to the recording section 6 via a signal line (not shown).

An operating section 2 provided at the lower front of the frame 1 controls the winding direction of the sheet 15 by the motor (not shown);
A plurality of keys are provided for operating the blackboard, such as a document reading section 5 and a recording section 6. A document receiving section 16 disposed on the lower surface of the frame 1 is for receiving a read document 23 sent out from the document reading section 5.

The electrical configuration of the blackboard configured as described above will be explained based on FIG. 5.

A central processing unit (hereinafter referred to as CPU) 32 can input signals from the sensor 30 and the operation unit 2, and controls the operation of this blackboard according to a program stored in a read-only memory (hereinafter referred to as ROM) 36. It is configured as follows. The shift lock oscillator 35 applies a pulse voltage to the CCD image sensor 20, and in response to this, the CCD image sensor 20 performs a scanning output. The image transfer lock oscillator 31 is configured to apply a pulse voltage to the CCD image sensor 20 so that the CCD image sensor 20 sequentially outputs data on a straight line. The comparator 33 compares the data output from the CCD image sensor 20 with the reference signal from the CPU 32, performs binarization, removes noise caused by dirt on the sheet marking surface 15a, repairs image defects, and converts the data into is stored in a random access memory (hereinafter referred to as RAM) 34.

The operation of the electronic whiteboard of this embodiment configured as described above will be explained with reference to FIG.

First, marks 13 specifying the start and end points of reading are written on the original 23 and inserted into the original reading section 27 (Sl), and the original feed rollers 24a and 24b start rotating to feed the original 23 (S2).

When the sensor 30 detects the first mark (S3), reading starts (S4), and when the second 9 marks are detected (
S7) When reading is finished (S8), count one line per line to calculate the reading width (S5)
The count number is stored in the RAM 34 (S6). If the count number is N and the reading density is A (dat/m), it is calculated as L=N/A (m). If the vertical width of the sheet writing surface 15a is V and the horizontal width is H, then the sheet writing surface 1
The ratio H/h of the horizontal width H of the sheet 5a and the horizontal width of the original 23, and the vertical width V of the sheet writing surface 15a and the reading range L of the original 23 (=N
/A) is calculated (S9), and the smaller of both ratios is designated as the enlargement magnification (SIO) and is enlarged and recorded on the sheet writing surface 15a (Sll). Although only one set of marks 13 is used here, Fig. 4(b)
It is also quite possible to use multiple sets like this. That is, odd-numbered marks represent the start of reading, and even-numbered marks represent the end of reading.

Note that the present invention is not limited to the above-mentioned embodiments; for example, this embodiment can be applied to an electronic blackboard device that automatically reads image information on a blackboard screen and records it on paper in a reduced size. It is also possible to arbitrarily change the shape and configuration of each part without departing from the spirit of the invention.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an electronic blackboard of this embodiment embodying the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG.
The figure is a schematic plan view of the main parts of the document reading section 5, and FIG. 4 is a mark 1.
FIG. 5 is a block diagram, and FIG. 6 is a flowchart of reading and recording control.

Claims (1)

[Claims] 1. A reading means (5) for reading image information on a manuscript (23); and a recording means (6) for recording the read image information on a large-sized recording medium (15); , wherein the reading means (5) includes a detection means (30) for detecting a mark (13) written on the document (23), Means (6) detects the document (23) indicated by the mark (13) detected by the detection means (30).
) The image information drawn in the area on the large recording medium (1
5) A display board configured to record.