Table type information terminal

• US 20050185825A1
• Filed: 02/09/2005
• Published: 08/25/2005
• Est. Priority Date: 02/13/2004
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Kato, Mariko, Hoshino, Takeshi, Yanagimoto, Manabu, Horii, Youichi, Maruyama, Yukinobu, Miyamoto, Yoh
• Application Number:
  US11/053,261
• Publication Number:
  US 20050185825A1
• Time in Patent Office: Days
• US Class Current: 382/103
• CPC Class Codes: A63F 2300/1093 using visible light
• 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: H04N 5/265 Mixing

Abstract

Projector units in a table display a content list, a content selected by the content list and the like, on screens. Infrared rays are uniformly irradiated to the screens from a plurality of infrared LED'"'"'s. A camera unit images the silhouette of an object touching the screens to judge whether the silhouette is formed by a pointing member such as a fingertip for touching the content list or by an object other than the pointing member. If it is judged that the pointing member such as a fingertip touches the screens, a content menu is selected from the content list.

Claims

1. A table type information terminal comprising:

a control unit;

a screen disposed on a table plane;

a projector unit disposed on one side of said screen for projecting an image on said screen; and

a camera unit disposed on one side of said screen for imaging a silhouette of an object formed on said screen, said object being on another side of said screen,

wherein said control unit judges whether the silhouette imaged with said camera unit is a silhouette of a pointing member for selecting a portion of said projected image or a silhouette of an object other than said pointing member.

2. The table type information terminal according to claim 1, wherein a silhouette of said pointing member is a silhouette of a fingertip, and said control unit judges through pattern recognition whether the silhouette imaged with said camera unit is a silhouette of a pointing member for selecting a portion of said projected image or a silhouette of an object other than said pointing member.

3. The table type information terminal according to claim 1, further comprising a light source on the other side of said screen, and a silhouette imaged with said cameral unit is a silhouette of said pointing member or an object other than said pointing member formed by light emitted from said light source.

4. The table type information terminal according to claim 3, wherein said light source emits light having a predetermined wavelength different from a wavelength of an image projected from said projector unit, and said camera unit received light having said predetermined wavelength.

5. The table type information terminal according to claim 4, wherein said light source is an infrared LED.

6. The table type information terminal according to claim 1, wherein said control unit uses different images to be projected upon said screen from said projector unit, between a case that a silhouette is judged as a silhouette of said pointing member and a case that a silhouette is judged as a silhouette of an object other than said pointing member.

7. The table type information terminal according to claim 1, wherein said projector unit and said camera unit are disposed under the table plane on which said screen is disposed, and said camera unit images a silhouette on said screen of an object on an upper side of said screen.

8. A table type information terminal comprising:

a control unit;

a screen disposed on a table plane;

a projector unit disposed on one side of said screen for projecting an image on said screen; and

a camera unit disposed on one side of said screen for imaging a silhouette of an object formed on said screen, said object being on another side of said screen,

wherein;

said projector unit displays in a scrolling and flowing manner a content list including a plurality of content menus on said screen; and

said control unit judges whether the silhouette imaged with said camera unit is a silhouette of a pointing member for selecting a portion of said projected image or a silhouette of an object other than said pointing member, and if it is judged that the silhouette is the silhouette of the object other than said pointing member, controls a flow of said content list to display said content list to flow by avoiding the object.

9. The table type information terminal according to claim 8, wherein if it is judged that the silhouette is the silhouette of the pointing member, said control unit displays on said screen a content corresponding to a content menu selected from the content list by said pointing member.

10. The table type information terminal according to claim 9, wherein the image projected on said screen includes a content list display area in which said content list is displayed in a scrolling manner and a content reproduction area in which a content corresponding to the selected content menu.

11. The table type information terminal according to claim 10, wherein:

the image projected on said screen further includes a content storage area in which a content icon representative of a stored content is displayed; and

when a content to be displayed in said content reproduction area is to be stored, a content icon of the content is displayed in said content storage area, and when said content icon displayed in said content storage area is selected, a content corresponding to the selected content icon is displayed in said content reproduction area.

12. A table type information terminal comprising:

a control unit;

a screen disposed on a table plane;

a projector unit disposed on one side of said screen for projecting an image on said screen;

a camera unit disposed on one side of said screen for imaging a silhouette of an object formed on said screen, said object being on another side of said screen; and

a tag reader unit for reading an IC tag or a card reader unit for reading an IC card,

wherein;

said control unit makes said projector unit project an image on said screen in accordance with information read from said ID tag with said tag reader unit or information read from said IC card with said card reader unit; and

said control unit judges whether the silhouette imaged with said camera unit is a silhouette of a pointing member for selecting a portion of said projected image or a silhouette of an object other than said pointing member.

13. The table type information terminal according to claim 12, wherein:

said card reader unit reads a mail address from the IC card; and

if it is judged that the silhouette is the silhouette of said pointing member, said control unit transmits a selected image from said projected image to said mail address.