Memory carrier and method for driving the same

• US 20080204197A1
• Filed: 02/06/2008
• Published: 08/28/2008
• Est. Priority Date: 02/23/2007
• Status: Abandoned Application

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Shionoiri, Yutaka
• Application Number:
  US12/068,395
• Publication Number:
  US 20080204197A1
• Time in Patent Office: Days
• US Class Current: 340/10.1
• CPC Class Codes: G06K 19/07703 the interface being visual
• CPC Class Codes: G06Q 10/08 Logistics, e.g. warehousing, loading or distribution; Inventory or stock management

Abstract

A contactless memory carrier for which it is not necessary to fabricate a barcode and a tag using separate processes is provided. The memory carrier includes a memory which stores data; a control circuit which reads the data from the memory in accordance with a signal transmitted contactlessly from an interrogator; a converter which converts the read data in accordance with an algorithm; an image signal generating circuit which uses the data converted by the converter to generate an image signal; and a display device which uses the image signal to display a code. The data converted in accordance with the algorithm may be stored in the memory in advance. In that case, it is not necessary to provide the converter for converting data in accordance with the algorithm.

Claims

1. A memory carrier comprising:

a memory storing data;

a control circuit configured to read the data from the memory in accordance with a signal transmitted wirelessly from an interrogator;

a converter configured to convert the data in accordance with an algorithm;

an image signal generating circuit configured to generate an image signal using converted data; and

a display device which displays an image using the image signal.

2. The memory carrier according to claim 1, wherein the display device comprises a display element comprising a display material having a memory property.

3. The memory carrier according to claim 1, wherein the memory is a rewritable nonvolatile memory.

4. The memory carrier according to claim 1, further comprising an antenna circuit configured to receive a radio wave from the interrogator and to generate the signal.

5. The memory carrier according to claim 1, wherein the display device comprises a display element comprising a display material comprising a charged fine particle.

6. The memory carrier according to claim 1, wherein the display device displays a one-dimensional code.

7. The memory carrier according to claim 1, wherein the display device displays a two-dimensional code.

8. The memory carrier according to claim 1, wherein the memory carrier is a card.

9. A memory carrier comprising:

a memory storing data;

a control circuit configured to read the data from the memory in accordance with a signal transmitted wirelessly from an interrogator;

an image signal generating circuit configured to generate an image signal using the data; and

a display device which displays a code using the image signal.

10. The memory carrier according to claim 9, wherein the display device comprises a display element comprising a display material having a memory property.

11. The memory carrier according to claim 9, wherein the memory is a rewritable nonvolatile memory.

12. The memory carrier according to claim 9, further comprising an antenna circuit configured to receive a radio wave from the interrogator and to generate the signal.

13. The memory carrier according to claim 9, wherein the display device comprises a display element comprising a display material comprising a charged fine particle.

14. The memory carrier according to claim 9, wherein the display device displays a one-dimensional code.

15. The memory carrier according to claim 9, wherein the display device displays a two-dimensional code.

16. The memory carrier according to claim 9, wherein the memory carrier is a card.

17. A memory carrier comprising:

a first memory storing first data;

a second memory storing second data obtained by converting the first data in accordance with an algorithm;

a control circuit configured to read the second data from the second memory in accordance with a first signal transmitted wirelessly from an interrogator;

an image signal generating circuit configured to generate an image signal using the second data; and

a display device which displays an image using the image signal.

18. The memory carrier according to claim 17, wherein the display device comprises a display element comprising a display material having a memory property.

19. The memory carrier according to claim 17, wherein the first memory is a rewritable nonvolatile memory.

20. The memory carrier according to claim 17, further comprising an antenna circuit configured to receive a radio wave from the interrogator and to generate the signal.

21. The memory carrier according to claim 17, wherein the display device comprises a display element comprising a display material comprising a charged fine particle.

22. The memory carrier according to claim 17, wherein the display device displays a one-dimensional code.

23. The memory carrier according to claim 17, wherein the display device displays a two-dimensional code.

24. The memory carrier according to claim 17, wherein the memory carrier is a card.

25. A method for driving a memory carrier which comprises a memory and a display device comprising:

reading data from the memory in accordance with a first signal transmitted wirelessly from an interrogator;

generating a second signal by using the data;

transmitting the second signal wirelessly to the interrogator;

converting the data in accordance with an algorithm;

generating an image signal by using the converted data; and

displaying an image on the display device by using the image signal.

26. The method for driving the memory carrier according to claim 25, wherein the display device comprises a display element comprising a display material having a memory property.

27. The method for driving the memory carrier according to claim 25, wherein the memory is a rewritable nonvolatile memory.

28. The method for driving the memory carrier according to claim 25, further comprising an antenna circuit configured to receive a radio wave from the interrogator and to generate the signal.

29. The method for driving the memory carrier according to claim 25, wherein the display device displays a one-dimensional code.

30. The method for driving the memory carrier according to claim 25, wherein the display device displays a two-dimensional code.

31. The method for driving the memory carrier according to claim 25, wherein the step of converting the data in accordance with the algorithm is performed only when the step of transmitting the second signal wirelessly to the interrogator is not achieved.

32. The method for driving the memory carrier according to claim 25, wherein the memory carrier is a card.

33. A method for driving a memory carrier which comprises a first memory, a second memory, and a display device comprising:

reading first data from the first memory in accordance with a first signal transmitted wirelessly from an interrogator;

generating a second signal by using the first data;

transmitting the second signal wirelessly to the interrogator;

reading second data from the second memory wherein the second data is obtained by converting the first data in accordance with an algorithm;

generating an image signal by using the second data; and

displaying an image on the display device by using the image signal.

34. The method for driving the memory carrier according to claim 33, wherein the display device comprises a display element comprising a display material having a memory property.

35. The method for driving the memory carrier according to claim 33, wherein the first memory is a rewritable nonvolatile memory.

36. The method for driving the memory carrier according to claim 33, further comprising an antenna circuit configured to receive a radio wave from the interrogator and to generate the signal.

37. The method for driving the memory carrier according to claim 33, wherein the display device displays a one-dimensional code.

38. The method for driving the memory carrier according to claim 33, wherein the display device displays a two-dimensional code.

39. The method for driving the memory carrier according to claim 33, wherein the step of reading the second data from the second memory is performed only when the step of transmitting the second signal wirelessly to the interrogator is not achieved.

40. The method for driving the memory carrier according to claim 33, wherein the memory carrier is a card.