JP2005125628A - Recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely record information on a blackboard 12 before erasing out. <P>SOLUTION: In a recording apparatus 10, when a writing person holds a blackboard eraser 26, the information on the blackboard 12 is photographed by a digital camera 22. Therefore, the information on the blackboard 12 is surely recorded before erasing out. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a recording apparatus that records characters and figures written on a writing board by a writer.

  2. Description of the Related Art Conventionally, an electronic blackboard has been devised that is a recording device that reads and records information such as characters and figures written on a writing board such as a whiteboard (registered trademark) with an image sensor or a touch sensor (for example, patents). References 1 to 3).

  In these electronic blackboards, the information written on the writing board is not recorded in real time as in video shooting, so if the writer or the like does not input the recording instruction to the control unit, the information on the writing board is not Not recorded. For this reason, if a writer, etc. forgets to input a recording instruction and erases information on the writing board by means of eraser such as blackboard eraser, there is a problem that information on the writing board is not recorded.

In addition, the conventional electronic blackboard requires an image sensor or touch sensor of the same size as the entire writing board, a mechanism for rotating the writing board which is a belt-like sheet, or a mechanism for scanning a line-shaped image sensor, etc. There is a problem that the apparatus is large and very expensive.
JP-A-6-326805 JP-A-6-127189 JP 2000-184112 A

  The present invention has been made in consideration of the above facts, and prevents information such as characters and figures written on a writing board from being erased by an erasing means before being recorded by the recording device. The purpose is to reduce the cost.

  The recording apparatus according to claim 1 detects that the writer holds recording means for recording information written on a writing board and erasing means for erasing information written on the writing board. And holding detection means for transmitting a detection signal, and first control means for operating the recording means when receiving the detection signal from the holding detection means.

  In the recording apparatus according to the first aspect, when the eraser such as the blackboard eraser is held by the writer, it is detected by the holding detection unit. When the first control means receives the detection signal from the holding detection means, the first control means operates the recording device to record information such as characters and figures written on a writing board such as a blackboard.

  Thus, the information written on the writing board is always recorded by the recording device before being erased by the erasing means.

  A recording apparatus according to a second aspect is the recording apparatus according to the first aspect, wherein the recording means is a camera that photographs information written on the writing board.

  In the recording apparatus according to the second aspect, when the writer holds the erasing means, information such as characters and figures written on the writing board is photographed by the camera. This eliminates the need for a mechanism for rotating the writing board, which is a belt-shaped sheet, a mechanism for driving the image sensor, or a large-area image sensor or touch sensor having the same size as the entire writing board. That is, it becomes possible to attach the recording apparatus of the present invention to an existing blackboard, and the cost can be reduced.

  The recording device according to claim 3 detects that a recording means for recording information written on a writing board and a writing tool for writing information on the writing board are located at a predetermined position on the writing board, and detects It has a position detecting means for transmitting a signal, and a second control means for operating the recording means when receiving a detection signal from the position detecting means.

  In the recording apparatus according to claim 3, when the writer holds the writing instrument and writes information such as characters and figures on the writing board, the writing instrument is positioned at a predetermined position on the writing board. It is detected by the detection means. This predetermined position can be arbitrarily set. For example, the predetermined position is set so that the writing instrument is detected when writing is completed in the area of 1/4, 2/4, 3/4, 4/4 of the writing board. do it. As a result, as the writing of the writer proceeds, information such as characters and graphics on the writing board is automatically recorded by the recording device at a predetermined timing. Therefore, it is possible to prevent the information on the writing board that is not recorded by the recording device from being erased.

  A recording apparatus according to a fourth aspect is the recording apparatus according to the third aspect, wherein the recording means is a camera that photographs information written on the writing board.

  In the recording apparatus according to the fourth aspect, when the writing instrument is detected at a predetermined position on the writing board, the characters and figures written on the writing board are photographed by the camera. This makes it possible to record information written on an existing blackboard simply by installing a sensor that detects the position of the chalk on the existing blackboard and installing a camera that receives radio waves from this sensor and shoots it toward the writing board. . Therefore, it is not necessary to replace the blackboard itself, and the cost can be reduced.

  A recording apparatus according to a fifth aspect is the recording apparatus according to the third or fourth aspect, wherein the position detecting means includes a light projecting unit that projects light onto the writing board, and a light projecting unit from the light projecting unit. And a light emitting / receiving sensor configured to receive light, and a transmission means for transmitting a detection signal to the second control means when the light is blocked by the writing instrument.

  In the recording apparatus according to the fifth aspect, the light projecting unit of the light projecting / receiving sensor projects light onto the writing board, and the light projecting from the light projecting / receiving sensor is received by the light receiving unit of the light projecting / receiving sensor. When this projection is interrupted by the writing instrument, a detection signal is transmitted from the transmitting means to the second control means, and the recording means such as a camera is operated by the second control means. Since the position of the writing instrument can be detected simply by attaching the light emitting / receiving sensor and the transmission means to the existing blackboard, the cost for replacing the existing blackboard can be saved.

  Since the present invention is configured as described above, it is possible to prevent information such as characters and figures written on the writing board from being erased by the erasing means before being recorded by the recording device, and to reduce the cost of the recording device.

  The first embodiment will be described below with reference to the drawings.

  As shown in FIG. 1, the recording device 10 of the present invention is a device that records information such as characters and figures written by a writer on a blackboard (writing board) 12 during a lecture or a meeting. The recording apparatus 10 includes a control unit 20 including a control unit 14 as a first control unit, a data recording unit 16, an infrared light receiving unit 18, and an infrared emitting unit 19 (see FIG. 2), a digital camera 22, and a holding detection unit. And a blackboard eraser (erasing means) 26 provided with a detection switch 24 (see FIGS. 2 and 3).

  The digital camera 22 is directed toward the blackboard 12 and is framed so that the entire blackboard 12 can be photographed. As shown in FIG. 2, the digital camera 22 includes an infrared receiving unit 28 that receives the infrared ray L from the infrared emitting unit 19, and a first control unit that operates the shutter 30 when the infrared receiving unit 28 receives the infrared ray. And an infrared emitting unit 33 that emits infrared rays to transmit the captured image data to the control unit 20.

  As shown in FIG. 3, a detection switch 24 is provided on the upper surface of the holding portion 34 of the blackboard eraser 26. The detection switch 24 is pressed when the writer holds the holding unit 34. Further, an infrared emitting unit 36 is provided on the side surface of the holding unit 34. The infrared emitting unit 36 emits infrared L when the detection switch 24 is pressed.

  As shown in FIG. 1, the infrared light L is received by the infrared light receiving unit 18 of the control unit 20. When the infrared light receiving unit 18 receives the infrared light L, the control unit 14 causes the infrared emitting unit 19 to emit the infrared light L toward the infrared light receiving unit 28 of the digital camera 22.

  That is, when the writer holds the blackboard eraser 26 to erase information such as characters and figures written on the blackboard 12, the shutter 30 of the digital camera 22 is activated, and the characters on the blackboard 12 before being erased by the blackboard eraser 26. And information such as figures are photographed.

  When infrared light is emitted from the infrared emitting unit 33 of the digital camera 22 and received by the infrared light receiving unit 18 of the control unit 20, image data is recorded in the data recording unit 16. The control unit 20 may be provided with an OCR (Optical Character Recognition) function to create character data and record it in the data recording unit 16.

  As described above, since the information on the blackboard 12 is recorded by detecting that the blackboard eraser 26 is held by the writer, it is not erased before the information on the blackboard 12 is recorded. Moreover, since the recording apparatus 10 can be used by being attached to an existing blackboard 12, it is not necessary to replace the blackboard 12 itself, and the installation cost of the blackboard 12 can be reduced.

  Next, a modification of the first embodiment will be described.

  As shown in FIG. 4, a blackboard eraser table 42 on which the blackboard eraser 40 is placed when not in use is provided at the end of the chalk table 38 at the lower end of the blackboard 12. The blackboard eraser table 42 is formed with a concave portion 42A having a concave-convex relationship with the eraser portion 44 of the blackboard eraser 40. The concave portion 42A is pushed down when the eraser portion 44 is set in the concave portion 42A. A detection switch 46 is provided. An infrared emitting unit 48 that emits infrared L toward the control unit 20 is provided on the side surface of the blackboard eraser table 42.

  When the detection switch 46 is pushed down, that is, when the writer does not hold the blackboard eraser 40, the infrared ray L is not emitted from the infrared emitting unit 48, the blackboard eraser 40 is lifted by the writer, and the detection switch 46 Is released from the infrared emitting unit 48 toward the control unit 20.

  Thus, as in the first embodiment, when the blackboard eraser 40 is held by the writer, an image of the blackboard 12 is taken by the digital camera 22 and recorded in the data recording unit 16.

  Next, a second embodiment will be described. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment, and description is abbreviate | omitted.

  As shown in FIG. 5, the recording apparatus 50 includes a control unit 52 including a control unit 51 as a second control unit, a data recording unit 16, an infrared light receiving unit 18, and an infrared emitting unit 19 (see FIG. 6), and a digital camera. 54, and a light projecting / receiving sensor 56 (see FIGS. 6 and 7) as position detecting means, and a U-shaped frame body 58 fitted into the upper end portion and the left and right end portions of the blackboard 12.

  As shown in FIG. 6, the digital camera 54 includes an infrared receiving unit 28 that receives infrared rays from the infrared emitting unit 19, and control as second control means that operates the shutter 30 when the infrared receiving unit 28 receives infrared rays. A unit 57 and an infrared emitting unit 33 that emits infrared rays for transmitting captured image data to the control unit 52 are provided.

  As shown in FIG. 7, the frame body 58 is provided with four light projecting / receiving sensors 56 including a light projecting unit that projects infrared light and a light receiving unit that receives infrared light. The first light projecting / receiving sensor 56A is provided at the center in the left-right direction of the upper frame 58A of the frame 58, and emits infrared rays L1 downward substantially vertically. A first reflector 60A is attached to the central portion of the choke table 38 in the left-right direction so as to face the first light projecting / receiving sensor 56A. Thereby, the infrared ray L1 emitted from the first light projecting / receiving sensor 56A is reflected by the first reflecting plate 60A to the first light projecting / receiving sensor 56A and received by the first light projecting / receiving sensor 56A.

  The second light projecting / receiving sensor 56B is provided at the right end of the upper frame 58A in the left-right direction, and emits infrared rays L2 downward substantially vertically. A second reflector 60B is attached to the right end of the choke table 38 in the left-right direction so as to face the second head light receiving sensor 56B. Thus, the infrared light L2 emitted from the second light projecting / receiving sensor 56B is reflected to the second light projecting / receiving sensor 56B by the second reflecting plate 60B and received by the second light projecting / receiving sensor 56B.

  The third light emitting / receiving sensor 56C is provided at the center in the vertical direction of the right frame 58B of the frame body 58, and emits infrared rays L3 substantially horizontally to the left. A third reflector 60C is attached to the center of the left frame 58C of the frame body 58 in the vertical direction so as to face the third light projecting / receiving sensor 56C. As a result, the infrared light L3 emitted from the third light projecting / receiving sensor 56C is reflected by the third reflector 60C to the third light projecting / receiving sensor 56C and received by the third light projecting / receiving sensor 56C.

  Further, the fourth light projecting / receiving sensor 56D is provided at the lower end in the vertical direction of the right frame 58B, and emits infrared rays L4 substantially horizontally to the left. A fourth reflector 60D is attached to the lower end in the vertical direction of the left frame 58C so as to face the fourth light projecting / receiving sensor 56D. Thereby, the infrared ray L4 emitted from the fourth light projecting / receiving sensor 56D is reflected by the fourth reflecting plate 60D to the fourth light projecting / receiving sensor 56D and received by the fourth light projecting / receiving sensor 56D.

  The right frame 58B is provided with an infrared emitting unit 62 for emitting infrared L to the infrared receiving unit 18 of the control unit 52 based on signals from the first to fourth light projecting / receiving sensors 56 (A to D). .

  Here, in lectures other than conferences and national languages, writing is usually started from the upper left part of the blackboard 12, and a line break is made at the center in the right direction. This is repeated up to the lower end of the blackboard 12. Next, writing is started again from the center of the upper end of the blackboard 12, and a new line is started at the right end in the right direction. This is repeated up to the lower right end of the blackboard 12.

  The infrared ray L1 passes through a point where the writing started from the upper left portion of the blackboard 12 is broken, and the infrared ray L2 passes through a point where the writing started from the center of the upper end of the blackboard 12 is broken. The infrared ray L3 passes through a point where the writing started from the top of the blackboard 12 is repeated to the middle in the vertical direction, and the infrared ray L4 is written in the vertical direction starting from the top of the blackboard 12. It passes through the point where the line break was repeated to the bottom.

  For this reason, when writing is started from the upper left part of the blackboard 12 and the chalk 2 is advanced to the center in the right direction, the infrared rays L1 are blocked by the chalk 2 or the hand 3 holding the chalk 2. From there, the line feed is repeated and the choke 2 is advanced to the central part in the vertical direction, and the infrared ray L3 is blocked by the choke 2 or the hand 3. Further, when the choke 2 is advanced to the central part in the right direction, the infrared rays L1 and L3 are choked. 2 or by hand 3

  Here, when the infrared rays L1 and L3 are blocked, that is, when writing in the upper left quarter of the area on the blackboard 12 is finished, the infrared ray L is emitted from the infrared emitting unit 62, and the infrared receiving unit of the control unit 52 18 receives light. Then, the control unit 51 of the control unit 52 causes the infrared emitting unit 19 to emit infrared L. The infrared light L is received by the infrared light receiving unit 18 of the digital camera 54. The control unit 51 of the digital camera 54 operates the shutter 30 when the infrared light receiving unit 18 receives the infrared light L. As a result, information such as characters and figures written in the upper left quarter of the blackboard 12 is photographed by the digital camera 54.

  Then, the infrared ray L is emitted from the infrared ray emitting unit 33 of the digital camera 54, and the image data captured by the digital camera 54 is transferred to the control unit 51 of the control unit 52. The image data is recorded in the data recording unit 16.

  Thereafter, when the choke 2 is advanced to the lower end portion in the vertical direction, the infrared ray L4 is blocked by the choke 2 or the hand 3, and when the choke 2 is further advanced from there to the central portion in the right direction, the infrared rays L1 and L4 become the choke 2 or hand. 3 is blocked.

  Here, when the infrared rays L1 and L4 are blocked, that is, when writing of the left 2/4 region on the blackboard 12 is finished, the infrared ray L is emitted from the infrared ray emitting unit 62, and the infrared light receiving unit of the control unit 52 18 receives light. Similarly, information such as characters and figures written in the left 2/4 area of the blackboard 12 is photographed by the digital camera 54, and the image data is recorded in the data recording unit 16.

  Then, when the choke 2 is advanced to a position where the infrared rays L2 and L3 are blocked by the choke 2 or the hand 3, characters, figures, etc. written in the 3/4 area excluding the lower right quarter on the blackboard 12 Information is photographed by the digital camera 54, and the image data is recorded in the data recording unit 16.

  After that, when the chalk 2 is advanced to a position where the infrared rays L2 and L4 are blocked by the chalk 2 or the hand 3, characters and figures written on the entire area (4/4) on the blackboard 12 are photographed by the digital camera 54. The image data is recorded in the data recording unit 16.

  As described above, as the writing of the writer proceeds, information such as characters and figures on the blackboard 12 is automatically recorded by the recording device 50 at a predetermined timing. It is possible to prevent erasing information such as characters and figures on the blackboard 12 that are not recorded.

  Further, a light emitting / receiving sensor 56 for detecting the position of the chalk 2 is attached to the existing blackboard 12, and a digital camera 54 for receiving radio waves from the light emitting / receiving sensor 56 and taking a picture is installed toward the blackboard 12, and the existing blackboard 12 is installed. 12 can be recorded. Therefore, it is not necessary to replace the blackboard 12 itself, and the cost can be reduced.

  In the present embodiment, the predetermined position at which the chalk 2 or the hand 3 is detected is the central portion, the lower end central portion, the right end central portion, and the right lower end portion of the blackboard 12. However, the predetermined position is not limited thereto. Can be set arbitrarily.

  In the first and second embodiments, the digital cameras 22 and 54 are used as recording means for recording characters written on the blackboard 12 as a writing board. However, the present invention is not limited to this, and image sensors, touch sensors, and the like are also used. Applicable.

1 is a perspective view illustrating a recording apparatus according to a first embodiment. 1 is a block diagram illustrating a schematic configuration of a recording apparatus according to a first embodiment. It is a perspective view which shows blackboard eraser of the recording device of 1st Embodiment. It is a perspective view which shows the modification of blackboard eraser of the recording device of 1st Embodiment. It is a perspective view which shows the recording device of 2nd Embodiment. It is a block diagram which shows the outline of the recording device of 2nd Embodiment. It is a figure which shows the frame of the recording device of 2nd Embodiment.

Explanation of symbols

10 Recording device 12 Blackboard (writing board)
14 Control unit (first control means)
19 Infrared emitting part (first control means, second control means)
22 Digital camera (recording means, camera)
24 detection switch (holding detection means)
26 Blackboard eraser
28 Infrared light receiver (first control means, second control means)
32 control unit (first control means)
36 Infrared emission part (holding detection means)
40 Blackboard eraser
46 Detection switch (holding detection means)
50 Recording Device 51 Control Unit (First Control Unit)
54 Digital camera (recording means, camera)
56 Light emitting / receiving sensor (position detection means)
56A First light emitting / receiving sensor (position detecting means, light emitting / receiving sensor)
56B Second light emitting / receiving sensor (position detecting means, light emitting / receiving sensor)
56C Third light emitting / receiving sensor (position detecting means, light emitting / receiving sensor)
56D Fourth light emitting / receiving sensor (position detecting means, light emitting / receiving sensor)
57 control unit (first control means)
62 Infrared emitting part (position detecting means, transmitting means)

Claims (5)

A recording means for recording the information written on the writing board;
A holding detection means for detecting that a erasure means for erasing information written on the writing board is held by the writer, and for transmitting a detection signal;
First control means for operating the recording means when receiving a detection signal from the holding detection means;
A recording apparatus comprising:   The recording apparatus according to claim 1, wherein the recording unit is a camera that captures information written on the writing board. A recording means for recording the information written on the writing board;
Position detecting means for detecting that a writing tool for writing information on the writing board is located at a predetermined position on the writing board, and for transmitting a detection signal;
Second control means for operating the recording means when receiving a detection signal from the position detection means;
A recording apparatus comprising:   The recording apparatus according to claim 3, wherein the recording unit is a camera that captures information written on the writing board. The position detecting means includes a light projecting / receiving sensor configured to project light onto the writing board, and a light receiving unit configured to receive light projected from the light projecting unit,
A transmission means for transmitting a detection signal to the second control means when the projection is interrupted by the writing instrument;
The recording apparatus according to claim 3, further comprising:

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