JP2006164222A - System and method for recognizing and recording handwritten document by laser beam in real time - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for recognizing and recording a handwritten document by laser in real time. <P>SOLUTION: This system has a hand-held controller 1 having a control signal transmitting device for transmitting a control signal and including at least an instruction control key 11 and a mark control key 12, a central processing unit 2 including a reception control device 20 for receiving the control signal, an image extracting device 4 connected to the central processing unit 2, a projector 3 connected to the central processing unit 2 and a display device 5 arranged for the projector 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention generally relates to systems and methods for recognizing and recording manuscripts from laser light in real time. More particularly, the present invention uses a laser beam projected onto the displayed description and an image extraction device that extracts the mark or note in real time to manually form the indication or mark or note. About the system. As a result, manuscripts formed with laser light for a brief explanation during the meeting can be easily stored in a more convenient and cheap way.

  Conventionally, explanations in seminars or conferences are edited and printed on slides and displayed by a projector. As a result, the attendee or the audience can easily understand the contents of the explanation. Alternatively, the description can be made on a slide film for display. Both slides or slide films must be stored in sequence, placed continuously in the projector and removed. In addition, it is very inconvenient to record marks or notes made during the presentation.

  In recent years, description systems have been integrated with computer systems. By connecting the computer system with a projector and a display screen, the explanation can be easily presented during the meeting. The display of explanation can also be remotely controlled using remote control. In addition, the presenter can use a laser optical pen to point to some specific content of the displayed description.

  However, marks or notes made during a presentation cannot be stored in the description system in a conventional computer description system.

  The present invention has been made to solve the above problems. Accordingly, it is an object of the present invention to provide a system for recognizing and recording in real time marks or notes formed during a presentation.

  The above object of the present invention is achieved by the following means.

  The system for recognizing and recording manuscripts by laser light of the present invention in real time has a hand-held control device that functions to generate a laser beam pointing to specific contents in the displayed description. The movement trajectory of the laser beam can be extracted by an image extraction device, and further processed by a central processing unit to be converted into characters, graphics, or a combination of the two. The processed image can then be stored in a central processing unit and further displayed in real time.

  Further, the provided system includes a hand-held control device including at least an instruction control key and a mark control key, a central processing device including a reception control device, an image extraction device connected to the central processing device, and the central processing A projection device connected to the device; and a display device arranged with respect to the projection device.

  The handheld control device functions to generate a laser beam and / or a control signal in response to the control key being pressed. The control signal is received by the central processing unit. If the control signal includes an instruction to display only the pre-stored image, the projection device functions to project the image onto the display device. When the control signal includes an instruction to display an image and an instruction to extract an image with a mark formed by the laser beam, the image extraction device functions to extract both the image and the moving miracle of the laser beam. The extracted image and optical movement trajectory are processed by the central processing unit to form characters, graphics, or a combination thereof and stored in the central processing unit.

  According to the system for recognizing and recording a manuscript by laser light of the present invention in real time, a mark or a memo formed by a moving locus of the laser beam is extracted by an image extracting device and recorded in a central processing unit. Therefore, marks or memos formed during the presentation can be recognized and recorded in real time.

  Embodiments of the present invention will be described below with reference to the drawings. The features of the present invention will become more apparent with reference to the accompanying drawings. In addition, the manuscript by the laser in this specification represents the mark and memo which are formed with the movement locus | trajectory of a laser beam.

  FIG. 1 is a diagram showing the configuration of a system for recognizing and recording a manuscript by laser light in real time according to an embodiment of the present invention. As shown in FIG. 1, a system for recognizing and recording a manuscript by laser light in this embodiment in real time includes a handheld control device 1, a central processing unit 2, a projection device 3, an image extraction device 4, and a display. It has a device 5.

  The handheld control device 1 generates and transmits a control signal. The handheld control device 1 includes a control signal transmission device that transmits a control signal. The central processing unit 2 has a reception control device for receiving the control signal, and executes signal processing and calculation according to the control signal.

  The handheld control device 1 includes a portable remote control device that generates a laser beam. In the present embodiment, the handheld control device 1 includes two control keys. One of the two keys is an instruction control key 11 that controls transmission of the laser beam. The other of the two keys is a mark control key 12 that activates real-time recognition and recording of the manuscript. By pressing the instruction control key 11 and / or the mark control key 12, a control signal is generated and transmitted to the central processing unit 2 via the wireless communication circuit 16. As a result, signal processing and operation control are executed.

  The handheld control device 1 may further include other function keys such as scroll control keys 13 and 13 ′ for scrolling the projected data image forward and backward.

  FIG. 2 is a block diagram showing circuits of the handheld control device and the central processing unit in the present embodiment. As shown in FIG. 2, the handheld control device 1 includes a control interface circuit 14, a transmission system control circuit 15, a wireless communication circuit 16, and a laser light pen circuit 17. The control interface circuit 14 is connected to the control keys 11, 12, 13, 13 ', acquires an operation command, and generates a control signal corresponding to the operation command. The control signal is then transmitted by the wireless communication circuit 16. In addition to the functions described above, the laser light pen circuit 17 can function to generate a laser beam that directs the display device 5 to perform an instruction or manual mark.

  The central processing unit 2 has data recording and storage, and data calculation and processing functions. In the present embodiment, the central processing unit 2 includes, for example, a personal computer, a portable computer, or a digital data assistant (information portable terminal). In order to receive a control signal transmitted from the handheld control device 1, the wireless reception control device 20 may be built in the central processing unit 2 or connected to the outside.

  After data calculation and data processing by the central processing unit 2, a control signal is generated, and the projection device 3 that displays image data on the display device 5 is controlled and operated. Alternatively, the image extraction device 4 is operated and controlled, and a mark formed by a laser beam and displayed on the display device 5 is extracted. As shown in FIG. 5, thereafter, the extracted image data is sent to the central processing unit 2, and image calculation and image processing are executed by a real-time application program. The calculation result is recorded and stored in the central processing unit 2. Further, as shown in FIG. 6, the image data including the mark manuscript may be displayed on the display device 5 by the projection device 3.

  The radio reception control device 20 includes, for example, an RF radio reception device or a radio network access point. The electronic circuit structure of the central processing unit 2 is shown in FIG. As shown in FIG. 2, the electronic circuit of the central processing unit 2 includes a wireless reception circuit 21, a reception system control circuit 22, a data processing circuit 23, and a computer interface circuit 24. The wireless reception circuit 21 is used for receiving a control signal transmitted from the handheld control device 1 and transmitting the control signal to the reception system control circuit 22 and the data processing circuit 23 via the computer interface circuit 24. Then, the data processing circuit 23 processes the data and converts it into an image to be projected on the projection device 3. Alternatively, calculation of an image extracted by the image extraction device 4 is executed. The computer interface circuit 24 provides signal communication among the wireless reception circuit 21, the reception system control circuit 22, and the data processing circuit 23.

  The projection device 3 is built in the central processing unit 2 or connected to an image signal output terminal of the central processing unit 2 from the outside. The image signal output by the central processing unit 2 includes projection data including a mark formed by a laser beam and data to be processed, and is projected onto the display device 5 by the projection device 3. The projection device 3 includes a projector or an internal projection type projector.

  The image extraction device 4 is built in the central processing unit 2 or connected to an image signal input terminal of the central processing unit 2 from the outside. The image extraction device 4 extracts a mark formed by a laser beam on the image displayed by the display device 5. The optical movement trajectory of the extracted data is then processed and calculated by the application program to form characters, drawings, or combinations thereof.

  In the present embodiment shown in FIG. 6, the image extraction speed is about 30 to 120 times per second. Needless to say, image extraction speeds higher or lower than this range are adjusted according to specific requirements. In this embodiment, the image extraction device 4 includes a CCD, CMOS image extraction device, camcorder, or other photo or video device such as a webcam or digital video (digital camcorder).

  As described above, a typical real-time recognition and recording system for a manuscript by laser light has been described. Hereinafter, the operation process of the system will be described.

  FIG. 3 is a flowchart showing processing for preparing a system for recognizing and recording a manuscript by laser light in real time in the present embodiment. As shown in FIG. 3, first, the central processing unit 2 and the projection device 3 are arranged at predetermined positions. Next, the display device 5 is arranged so that an image projected from the projection device 3 can be received (step 600). Next, the image extraction device 4 is arranged so that the image displayed by the display device can be extracted (step 602). The display area of the display device 5 is adjusted to provide an appropriate image extraction range to the image extraction device 4 (step 604). Such an image extraction range corresponds to the range of the display area where the projection device 3 projects an image. Next, the image extraction apparatus 4 is switched to the signal reception and detection state by connecting to the central processing unit 2 or operating the wireless reception control device 20 (step 606). Next, an application program having a function of executing image calculation is activated (step 608). Thus, the system is ready to scan and receive control signals transmitted from the handheld control device 1 (step 610).

  FIG. 4 is a flowchart showing operation processing for controlling the handheld control device to execute real-time recognition and recording operations. As shown in FIG. 4, first, at least one of the control keys 11, 12, 13, 13 'is pressed to generate a control signal (step 700). Next, the transmission system control circuit 15 determines which type of control signal is generated by processing the control signal (step 702).

  When a control signal is generated by pressing the instruction control key 11, the laser beam pen circuit 17 is activated to generate a laser beam (step 704). The user can use the laser beam generated by the laser beam pen to indicate an image projected by the projection device 3 and displayed on the display device 5.

  When the transmission system control circuit 15 determines that the control signal is generated by the scroll control keys 13 and 13 ′, the control signal is transmitted from the wireless communication line 16. The control signal is received by the radio reception control device 20 and processed by the reception system control circuit 22 of the central processing unit 2. Then, the data processing circuit 23 switches to output projection data selected by scrolling, and the projection device 3 projects an image of the projection data on the display device 5 (step 706).

  When the transmission system control circuit 15 determines that a control signal is generated by pressing the mark control key 12, the laser beam pen circuit 17 is activated to generate a laser beam. Then, the user can manually form a mark or memo on the displayed image. On the other hand, the control signal is transmitted by the wireless communication line 16 and received by the wireless reception control device 20 of the central processing unit 2. The control signal is then processed by the receiving system control circuit 22 to activate the image extraction device 4 to extract the mark or memo image formed by the laser beam (step 708). The extracted image is then sent to the central processing unit 2 (step 710). The application program is activated to perform a laser trajectory calculation of the extracted image to form a character, graphic, or combination of graphic and character. Then, the characters or graphics formed by the application program are displayed on the display device 5 in combination with the original image projected by the projection device 3 (an image on which no mark is formed) (step 712). . The combined image can then be saved by the memory storage medium (step 714). The process shown in steps 700-714 can be repeated to use the laser beam to form marks and notes during the meeting, recognize the projected image in real time, and record the marks and images.

  As described above, the preferred embodiments of the present invention have been described in detail with reference to the drawings. However, it will be understood that the inventive concept may be embodied and used in various ways and that the appended claims encompass such variations and modifications except insofar as limited by the prior art.

It is a figure which shows the structure of the system for recognizing and recording the manuscript by the laser beam in one embodiment of this invention in real time. It is a block diagram of the electronic circuit of the system for recognizing and recording the manuscript by the laser beam shown in FIG. 1 in real time. It is a flowchart which shows the process which prepares the system for recognizing and recording the manuscript by the laser beam shown in FIG. 1 in real time. It is a flowchart which shows the operation processing of the system for recognizing and recording the manuscript by the laser beam shown in FIG. 1 in real time. FIG. 3 shows an embodiment using a laser beam to mark manually. It is a figure which shows embodiment which projects the laser original of a mark on a display apparatus.

Explanation of symbols

1 Handheld control device,
2 Central processing unit,
3 Projection device,
4 Image extraction device,
5 display device,
11, 12, 13, 13 'control key,
14 control interface circuit,
15 Transmission system control circuit,
16 wireless communication circuit,
17 Laser light pen circuit,
20 reception control device,
21 wireless receiver circuit,
22 receiving system control circuit,
23 data processing circuit,
24 Computer interface circuit.

Claims (13)

A hand-held control device having a control signal transmitting device for transmitting a control signal and including at least an instruction control key and a mark control key;
A central processing unit having a reception control device for receiving the control signal;
An image extraction device connected to the central processing unit;
A projection device connected to the central processing unit;
A display device arranged with respect to the projection device;
The system for recognizing and recording the manuscript by the laser beam formed in the description in real time characterized by having it.   An application program for calculating a movement trajectory of a laser beam stored in the central processing unit, generated by the handheld control device and projected onto the display device, and forming characters, figures, or a combination thereof; The system for recognizing and recording the manuscript by the laser beam according to claim 1 in real time. The handheld control device is:
A control interface circuit connected to the instruction control key and the mark control key;
A transmission system control circuit for generating a control signal according to an input of the control interface circuit;
A wireless transmission circuit for transmitting the control signal;
A laser light pen that generates an optical beam for instructions or marks;
The system for recognizing and recording the manuscript by the laser beam of Claim 1 in real time characterized by the above-mentioned.   2. The system for recognizing and recording a manuscript by laser light in real time according to claim 1, wherein the reception control device includes a wireless reception device built in or externally connected to the central processing unit. The central processing unit is
A radio receiving circuit for receiving a control signal generated by the handheld control device;
A data processing circuit for calculating an image projected by the projection device and an image extracted by the extraction device;
A reception system control circuit for controlling an image projection operation of the projection device and an image extraction operation of the image extraction device;
A computer interface circuit providing a connection between the data processing circuit and the receiving system control circuit and the wireless receiving circuit;
The system for recognizing and recording the manuscript by the laser beam according to claim 1 in real time.   2. The manuscript by laser light according to claim 1, wherein the projection apparatus includes a projector or an internal projection type projector that is built in the central processing unit or connected to a signal output terminal of the central processing unit. A system for recognition and recording.   The image extracting apparatus includes a CCD, a CMOS, a camcorder, a webcam, or a digital camcorder built in the central processing unit or connected to a signal input terminal of the central processing unit. A system for recognizing and recording manuscripts by laser light in real time.   The system for recognizing and recording a manuscript by laser light according to claim 1, wherein the handheld control device further includes at least one scroll control key. Preparing a control device for generating a control signal and a laser beam corresponding to the control signal;
Providing a central processing unit for receiving and processing the control signal;
Projecting an image on a display device according to the control signal and projecting a laser beam on the image displayed on the display device;
Extracting an image displayed on the display device and a movement locus of a laser beam projected on the display device;
Processing the extracted image and movement trajectory by an application program installed in the central processing unit;
Recording the processed image and the processing result of the movement trajectory;
A method for recognizing and recording a manuscript by a laser beam formed during explanation in real time.   The method for recognizing and recording a manuscript by laser light according to claim 9, further comprising the step of creating a mark and a memo on the image using the laser beam.   The method for recognizing and recording a manuscript by laser light according to claim 9, further comprising the step of using the laser beam to indicate the image.   10. The method for recognizing and recording a manuscript by laser light in real time according to claim 9, further comprising the step of projecting the processed image and the processing result of the movement trajectory onto the display device.   10. The method according to claim 9, further comprising the step of forming a character, a figure, or a combination thereof by processing the movement trajectory of the laser beam. Way for.

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