JPS62198920A - Still picture input device - Google Patents

Abstract

PURPOSE:To reduce the transmission band width for reduction of the working cost by transmitting the planar materials like documents, etc. in the form of a still picture and also the explained areas or corrected areas of the documents in the form of the coordinate values respectively. CONSTITUTION:An original platen 204 for an original 202 is provided together with an original reader 208 which reads optically the original 202. A coordinate input device 206 contains a flat plate type transparent member that is set on the stage 204 and delivers the positions pointed out by an indicating pen as electric signals. Thus the planar materials like documents, etc. are read by the reader 208 with scan of a reading head 212 and transmitted in the form of a still picture. When the explanation or correction is given to the document, the coordinate value is supplied from a coordinate input part 206. Thus it is possible to reduce the transmission band width and therefore the working cost with a still picture input device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a still image input device used, for example, in an electronic conference system that conducts a conference between remote points, and in particular includes a document reading device and a coordinate input device, The present invention relates to a still image input device that is capable of pointing out, adding to, or correcting a desired part of a planar material.

[Technical Reason of the Invention] Electronic conference systems have been known as systems that allow conferences to be held between remote locations.

As such an electronic conference system, for example, a system as shown in FIG. 4 has been considered.

As shown in the figure, this electronic conference system includes a microphone 1, a speaker 2, a television camera 3 that captures an image of the conference room, a television camera 4 that captures materials such as document manuscripts, a television monitor 5, and a facsimile machine. 6. A hard copy device 12 as a printer, an audio unit 7 that encodes and composites audio signals from the microphone 1 and speaker 2, an image unit 8 that encodes and composites image signals, and a control unit that controls the image unit. 9, an operation unit 10 for inputting instructions from the control unit 9, and a transmission unit 11 for transmitting and receiving audio signals and image signals.

[Problems with frontal technology]

In such conventional electronic conference systems, when displaying and explaining materials such as document manuscripts, this Q
Documents have been shown by showing a manuscript and a pointer bar indicating a predetermined portion of the manuscript using a television camera 4 and displaying the same on a television monitor 5. Furthermore, when adding to or modifying this material, the added or modified material is similarly conveyed by the television camera 4 and displayed on the television monitor 5.

However, this method is cumbersome to operate and impedes the smooth progress of the conference, and since the images read in this way are transmitted as video data, a wide transmission band is required at all times, which increases operational costs. The problem was that it was very expensive.

(Purpose of the Invention) The present invention has been made to solve these conventional difficulties.It is easy to operate, and while transmitting flat materials such as documents as still images, it is also possible to transmit explanatory parts, additions, and corrections of documents. It is an object of the present invention to provide a still image input device that transmits locations as coordinate values, thereby reducing the transmission bandwidth and lowering operating costs, and allowing a meeting to proceed smoothly.

[Summary of the Invention] That is, the present invention includes a document table on which a document is placed, a document reading device that optically reads the document, and a position indicated by an indicator pen placed on the document table as an electrical signal. By providing a coordinate input device made of a flat transparent member to output, operations are simplified and meetings proceed smoothly. Planar materials such as rough documents are transmitted as still images, while explanatory parts of documents and By transmitting additions and corrections as coordinate values, the transmission bandwidth is narrowed and operational costs are reduced.

[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a side view showing a still image input device 200 of this embodiment. As shown in the figure, this still image input device 2
00 is configured such that a coordinate input section 206 and a document reading section 208 are provided on a document table 204 on which a document 202 is placed so that they can be opened and closed by a hinge 210. Original reading section 2
A reading head 212 is provided inside the reading head 212 so as to be slidable in the direction of the arrow in the figure. FIG. 2 is an enlarged side view of the reading head 212, and inside the reading head 212 there is a light source 214,
A condensing lens 216 and a reading sensor 218 are provided, and the light emitted from the light source 214 and reflected by the original 202 is collected by the condensing lens 216 onto the reading sensor 218, where the original 202 is read. There is.

For example, the coordinate input unit 206 is configured to apply 3nO2 or I to a glass substrate.
It consists of a transparent conductive resistive film such as n2O3 formed by vapor deposition or sputtering, as shown in Figure 3.
The current flowing from the input pen 220 having a conductive tip is divided and outputted to the sampling section 222, and the indicated position of the input pen 220 is detected based on the magnitude of each divided current. As a coordinate input section, similar electrodes may be formed on the transparent synthetic resin sheet 1 so that the resistance value can be changed using the input pen, or the capacitance can be changed using the input pen. It can be used for.

Next, the operation of this embodiment will be explained.

First, the operation when reading a document will be explained. After placing the original 202 on the original table 204, the coordinate input unit 206
and closes the document reading section 208.

In this state, the reading head 212 reads the original 202 while scanning in the direction of the arrow. In other words, the text and graphic information of the original 202 illuminated by the light source 214 is collected as a binary run length on a one-dimensional line by the reading sensor 218 through the condensing lens 216, and the contents of the original 202 are collected as a binary run length on a one-dimensional line. It is read as two-dimensional information as a set of .

In this case, since the coordinate input section 206 is made of a transparent member, it does not become an obstacle when reading the document.

The contents of the original 1202 read in this way are reproduced and displayed on a graphic display device such as a monitor TV (not shown). Furthermore, during a remote conference, the same information will be transmitted to the other party's terminal and reproduced and displayed.

The contents of the document 202 are also stored in a storage device (not shown).

Next, when adding an explanation to the manuscript, use the manuscript reading section 2.
Open only 08 and insert the document 202 from above the coordinate input area 206.
This is done by pointing to the corresponding position. Since the coordinate input section 206 is transparent, the original 202 can be seen through it. Coordinate input unit 206 corresponding to the predetermined position of original @ 202
When the position of is pressed with the input pen, the sampling unit 222 detects a shunt current of the current flowing from the input pen, the indicated position of the input pen 220 is detected, and this detection data is displayed on the screen of a graphic display device such as a monitor TV (not shown). will be displayed. This graphic display device displays the contents of the document 202 stored in a storage device (not shown), and the coordinate input section 2
The positional relationship between the position specified on 06 and the document 202 is maintained on the screen display of the graphic display device.

Furthermore, by moving the input pen 220 at this time, it is also possible to add to or modify the contents of the manuscript 202.

In the still image input device of this embodiment, the original or the like is stored in the information sheet 16.
Since the transmission speed can be kept as low as about kbps, and the coordinate data can be kept as low as about 300bps for information, it is possible to reduce the transmission cost. Furthermore, if the contents of the document are stored in the storage device as shown in this embodiment, they can be read out and displayed on the graphic display device as needed, and the corresponding document can be set as shown in FIG. By doing so, it can be used even in the case of a large number of manuscripts. In this case, by first aligning the set position of the copy document for reading the document document in the reading unit, the correct position can be specified even when the document is set again. By temporarily storing the documents in the storage device in this way, it is only necessary to transmit the still image information once, so that the amount of transmission of drawing information of approximately 300 bpS is sufficient during a meeting.

In the above embodiment, the coordinate input section 206 is connected to the document table 20.
4 and the document reading section 20B, but if the document can be read from the back side, the document reading section is placed below the transparent document table, and the document and the coordinate input section 206 are placed on top of it. You may also arrange it.

Furthermore, the still image input device of the present invention can be used not only as an electronic conference system between remote locations, but also as an input means installed in a single conference room, and can be used not only for meetings but also as a normal information input means. Needless to say.

[Effects of the Invention] As explained above, according to the present invention, any position on a still image can be pointed out, added to, or corrected by inputting coordinates, so that, for example, a meeting can proceed smoothly. Furthermore, the transmission bandwidth can be narrowed to reduce operational costs.

[Brief explanation of drawings]

FIG. 1 is a side view of a still image input device, FIG. 2 is a side view of a reading section head, FIG. 3 is a configuration diagram of a coordinate input section, and FIG. 4 is a configuration block diagram of a conventional electronic conference system. 202... Original 204... Original table 206... Coordinate input unit 208... Original reading unit.

Claims (1)

[Claims] (1) Consists of a document table on which a document is placed, a document reading device that optically reads the document, and a flat transparent member placed on the document table and outputting the position indicated by an indicator pen as an electrical signal. A still image input device comprising: a coordinate input device.