DISPLAY TAG, DISPLAY TAG SYSTEM HAVING DISPLAY TAG, AND METHOD FOR WRITING DISPLAY TAG INFORMATION

• US 20090295549A1
• Filed: 12/09/2008
• Published: 12/03/2009
• Est. Priority Date: 05/27/2008
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: HAN, Sang-jun, EOM, Ju-il, HAN, Kuk-hyun, HAN, Jae-uk, CHOI, Myoung-soon
• Granted Patent: US 8,400,280 B2
• Time in Patent Office: Days
• US Class Current: 340/10.51
• CPC Class Codes: G06F 3/0482 Interaction with lists of selectable items, e.g. menus
• CPC Class Codes: G06F 3/0484 for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
• CPC Class Codes: G06K 19/0707 the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation G06K19/0702 takes precedence
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: G06K 19/07703 the interface being visual
• CPC Class Codes: G06K 7/10346 the antenna being of the far field type, e.g. HF types or dipoles

Abstract

A display tag is provided. A display tag includes a sensing unit which captures an image displayed on a screen of an external tag writer, if a sensing unit is disposed opposite the screen; and a display unit which displays a captured image. Therefore, a user can visually recognize content related to tag information, and thus user convenience is enhanced.

Claims

1. A display tag comprising:

a sensing unit which captures an image displayed on a screen of an external tag writer, if the sensing unit is disposed opposite to the screen; and

a display unit which displays the captured image.

2. The display tag of claim 1, wherein the display tag comprises electronic paper (E-paper).

3. The display tag of claim 1, further comprising:

a switching unit which controls an on-off operation of the sensing unit.

4. The display tag of claim 1, further comprising:

a power generator which generates power using at least one of heat, vibration, light rays emitted from the external tag writer, and electromagnetic waves, and supplies power to the sensing unit and the display unit.

5. The display tag of claim 1, further comprising:

a tag information storage unit which stores tag information acquired from the external tag writer.

6. The display tag of claim 1, wherein the sensing unit comprises:

a plurality of sensors which comprises a sensing area which corresponds to a size of the display unit, and receives light rays of an image displayed on a screen of an external display apparatus and outputs a signal corresponding to intensities of the light rays.

7. The display tag of claim 6, further comprising:

a driving circuit unit which controls each of pixels of the display unit to be driven according to a signal output from the plurality of sensors,

wherein the sensing unit, the driving circuit unit, and the display unit are disposed in successive layers.

8. A display tag system comprising:

a tag writer which displays an image corresponding to tag information to be provided; and

a display tag which captures the image displayed on a tag writing area, if a screen of the tag writer is disposed opposite to the tag writing area.

9. The display tag system of claim 8, wherein if the display tag is disposed opposite to the tag writing area while the image is displayed on the tag writing area, the tag writer writes tag information corresponding to the image on the display tag.

10. A display apparatus comprising:

a display unit; and

a sensing unit which captures an image displayed on a screen of an external display apparatus, and provides the display unit with the captured image, if the sensing unit is disposed opposite to the screen.

11. The display apparatus of claim 10, wherein the display unit comprises:

electronic paper (E-paper) which displays an image corresponding to the captured image, and maintains the same display condition even if the power is turned off.

12. A method for writing tag information of a display tag system, the method comprising:

displaying at least one image corresponding to tag information which is capable of being provided by a tag writer;

if one of the at least one image is selected as a selected image, displaying the selected image on a tag writing area on a screen of the tag writer; and

if a display tag having a display unit is disposed opposite the tag writing area, capturing, by the display tag, the selected image displayed on the tag writing area, and displaying the captured image on the display unit, and writing, by the tag writer, tag information corresponding to the selected image on the display tag.

13. A display tag comprising:

a sensing unit which automatically captures an image emitted by an external tag writer, if the sensing unit is disposed adjacent to the screen;

a display unit which displays the captured image; and

a power generator which generates power using at least one of heat, vibration, light rays emitted from the external tag writer, and electromagnetic waves, and supplies power to the sensing unit and the display unit,

wherein the power generator supplies the power to the sensing unit and the sensing unit operates based on the supplied power to automatically capture the image.

14. The display unit of claim 13, wherein the sensing unit does not automatically capture the image if the sensing unit is not disposed adjacent to the screen.

15. A method for writing tag information of a display tag system, the method comprising:

displaying a plurality of images corresponding to tag information stored in an external tag writer;

if one of the plurality of images is selected as a selected image, displaying the selected image on a first area of a screen of the external tag writer;

if a display tag having a display unit is adjacent to the first area, receiving at least one of heat, vibration, light rays, and electromagnetic waves emitted from the external tag writer to generate power, automatically capturing, by the display tag, the selected image displayed on the first area using the generated power, and displaying the captured image on the display unit.

16. The method of claim 15, wherein if the display tag is not adjacent to the first area, the power is not generated and automatically capturing does not occur.