Projection device projection system, and image obtainment method

• US 7,524,066 B2
• Filed: 12/18/2003
• Issued: 04/28/2009
• Est. Priority Date: 12/20/2002
• Status: Expired due to Fees

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Casio Computer Company Limited
• Inventors: Sato, Kunio
• Primary Examiner(s): Koval; Melissa J
• Application Number:
  US10/534,366
• Publication Number:
  US 20060033884A1
• Time in Patent Office: 1,958 Days
• Field of Search: 353/30, 353/69, 353/70, 353/121, 353/122, 353/28, 382/307, 382/285, 382/294, 382/254, 382/275, 382/312, 600/587, 348/135, 348/195, 348/744, 356/2, 356/147, 345/764, 345/838, 345/581, 715/517, 704/4
• US Class Current: 353/30
• CPC Class Codes: G06F 3/0386 for light pen
• CPC Class Codes: G06F 3/0425 using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected tracking a projected light spot to determine a position on a display surface G06F3/0386
• CPC Class Codes: G09G 5/393 Arrangements for updating the contents of the bit-mapped memory

Abstract

A projector (1) includes a template memory (5), the template memory storing beforehand, for example data of template images made of only ruled lines. A displaying unit (6) of the projector (1) projects template images to a screen (S). A digital camera unit (8) carries out imaging of characters, etc., that are written on the screen (S), together with projected template images. A CPU (2) sends data of the image that is carried out imaging, to a PC (100). The PC (100) receives the image data, and stores it to a storing unit (103).

Claims

1. A projection device comprising:

a projection unit which projects an image on a screen based on image data provided to the projection unit;

a storing unit which stores template image generation data for generating template images that have predetermined content and a blank space to be filled in by a user;

a control unit which obtains the template image generation data for generating one of the template images from said storing unit, provides generated template image data based on the obtained data to said projection unit, and causes the projection unit to project the template image based on the template image data;

an imaging unit which captures an image of the screen; and

an image recording unit which stores an image captured by the imaging unit.

2. The projection device according to claim 1, wherein:

said storing unit stores pixel pattern information of said template images as said template image generation data; and

said control unit obtains the pixel pattern information from said storing unit, and generates said template image data, based on the obtained pixel pattern information.

3. The projection device according to claim 1, wherein:

said storing unit stores template data for drawing ruled lines and generating said template images, as said template image generation data, and

said control unit obtains said template data from said storing unit, and generates said template image data to have ruled lines drawn based on the obtained template data.

4. The projection device according to claim 3, comprising:

an indication unit which indicates an editing position in said template image projected on said screen, and

an input unit which inputs editing content of data that corresponds to said editing position, based on the obtained editing position,

wherein said control unit obtains information of the editing position indicated by said indication unit, specifies data corresponding to said editing position based on the obtained editing position, obtains the specified data from the storing unit, and edits the obtained data based on the editing content input by the input unit.

5. The projection device according to claim 4, wherein:

said storing unit stores ruled line data that defines ruled lines that are to be drawn, as said template data, and

said control unit specifies ruled line data that corresponds to said editing position, based on the obtained editing position information, and obtains the specified ruled line data from the storing unit.

6. The projection device according to claim 5, wherein:

said ruled line data stored by the storing unit includes ruled line attribute information that indicates an attribute of the ruled lines to be drawn, and

said control unit edits the ruled line attribute information for the specified ruled line data, based on the editing content input by said input unit.

7. The projection device according to claim 4, wherein:

said storing unit stores cell data that defines a cell that is surrounded by ruled lines that form said template images as said template data, and

said control unit specifies cell data that corresponds to said editing position, based on the obtained editing position information, and obtains the specified cell data from said storing unit.

8. The projection device according to claim 7, wherein:

said cell data stored by the storing unit includes cell attribute information indicating an attribute of cells, and

said control unit obtains cell attribute information for said specified cell data from said storing unit, edits the obtained cell attribute information, based on the editing content that said input unit input, and stores the edited cell data to said storing unit.

9. The projection device according to claim 4, wherein:

said indication unit radiates spot light to said screen, and

said control unit controls the imaging unit to carry out imaging of the screen where said template image is projected, and said spot light is radiated, obtains a position relationship of the spot light from said indication unit and said template image from the image captured by said imaging unit, and obtains editing position information of said template image based on the obtained position relationship.

10. A projection device comprising:

a projection unit which projects an image to a screen based on image data provided to the projection unit;

a storing unit which stores template image generation data for generating template images that have predetermined content and a blank space to be filled in by a user;

an imaging unit which captures an image of said screen;

a command reception unit which receives commands for controlling said projection unit and said imaging unit, and

a control unit which provides the template image generation data for generating one of the template images to said projection unit and causes said projection unit to project the template image to the screen, in accordance with a projection command received by said command reception unit, and controls said imaging unit to capture an image of said screen, in accordance with an imaging command received by said command reception unit.

11. A projection system comprising:

a projection device; and

an image storing device;

wherein said projecting device comprises;

a projection unit which projects an image on a screen based on image data provided to the projection unit;

a storing unit which stores template image generation data for generating template images that have a blank space to be filled in by a user;

an imaging unit which captures an image of said screen;

a sending unit which sends data; and

a control unit which provides the template image generation data for generating one of the template images to said projection unit and causes said projection unit to project the template image, which has a blank space to be filled in by a user, to the screen, and controls said imaging unit to capture an image of said screen; and

wherein said image storing device comprises;

a storing unit which stores data of document images; and

a control unit which extracts data of said document images from said storing unit, sends the extracted image data to the projection device to be projected to said screen, receives data of an image sent from the projection device, and stores data relating the received image data to data of said document image to said storing unit.

12. A method comprising:

storing data of a template image, which has a blank space to be filled in by a user, to be projected to a screen, beforehand;

extracting said stored data of the template image,

projecting said template image, which has the blank space to be filled in by a user, to said screen, wherein the projected template image corresponds to the extracted data of the template image; and

capturing an image of said screen where said template image is projected.