Electronic shelf label systems and methods

• US 6,715,675 B1
• Filed: 11/16/2000
• Issued: 04/06/2004
• Est. Priority Date: 11/16/2000
• Status: Expired due to Term

• Current Assignee: Eldat Communication, Ltd. (Pricer AB)
• Original Assignee: Eldat Communication, Ltd. (Pricer AB)
• Inventors: Rosenfeld, Oren
• Primary Examiner(s): Frech, Karl D.
• Assistant Examiner(s): Koyama, Kumiko C.
• Application Number:
  US09/714,798
• Time in Patent Office: 1,237 Days
• Field of Search: 235/383, 705/20, 705/22
• US Class Current: 235/383
• CPC Class Codes: G06Q 20/201 Price look-up processing, e.g. updating
• CPC Class Codes: G06Q 20/203 Inventory monitoring
• CPC Class Codes: G09F 3/204 specially adapted to be attached to a shelf or the like
• CPC Class Codes: G09F 3/208 Electronic labels, Labels integrating electronic displays
• CPC Class Codes: G09F 9/30 in which the desired character or characters are formed by combining individual elements panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00
• CPC Class Codes: G09F 9/35 being liquid crystals G09F9/302 takes precedence; liquid crystal materials C09K19/00; liquid crystal panels comprising a number of electrodes in a single cell per se G02F1/13

Abstract

This invention discloses an electronic shelf label including an LCD display, a housing including a protective at least partially transparent cover layer disposed over the LCD display and in spaced relationship thereto, and an at least partially transparent intermediate layer formed over the LCD display and substantially filling a space between the LCD display and the protective at least partially transparent cover layer.

Claims

1. An electronic shelf label comprising:

an LCD display;

a housing including a protective at least partially transparent cover layer disposed over said LCD display and in spaced relationship thereto;

an at least partially transparent intermediate layer formed over said LCD display and substantially filling a space between said LCD display and said protective at least partially transparent cover layer; and

at least one receiver receiving IR transmissions including;

an IR sensor;

a non-IR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor.

2. An electronic shelf label according to claim 1 and wherein said at least partially transparent intermediate layer has an index of refraction which is selected so as to minimize reflection at interfaces between said at least partially transparent intermediate layer and both of said LCD display and said protective at least partially transparent cover layer.

3. An electronic shelf label according to claim 2 and wherein said index of refraction is identical to the index of refraction of at least one of said LCD display and said protective at least partially transparent cover layer.

4. An electronic shelf label according to claim 2 and wherein said index of refraction varies from one surface of said intermediate layer to an opposite surface thereof.

5. An electronic shelf label according to claim 1 and wherein said at least partially transparent intermediate layer is located with respect to said LCD display and to said protective at least partially transparent cover layer so as to substantially eliminate air gaps therebetween.

6. An electronic shelf label according to claim 2 and wherein said at least partially transparent intermediate layer is located with respect to said LCD display and to said protective at least partially transparent cover layer so as to substantially eliminate air gaps therebetween.

7. An electronic shelf label according to claim 1 and also comprising at least one fuel cell powering said LCD display.

8. An electronic shelf label according to claim 7 and also comprising a data communicator providing display data to said LCD display from an external data source and wherein said fuel cell powering said LCD display includes a fuel tank, filling generally the volume of said housing not occupied by said display and said data communicator.

9. An electronic shelf label system comprising:

a multiplicity of electronic shelf labels, each including an IR transmitter for transmitting information relating to the electronic shelf label; and

at least one receiver receiving IR transmissions from said multiplicity of electronic shelf labels, said at least one receiver including;

an IR sensor;

a non-IR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor.

10. An electronic shelf label system according to claim 9 and wherein each of said multiplicity of electronic shelf labels comprises:

an LCD display;

a housing including a protective at least partially transparent cover layer disposed over said LCD display and in spaced relationship thereto; and

an at least partially transparent intermediate layer formed over said LCD display and substantially filling a space between said LCD display and said protective at least partially transparent cover layer.

11. An electronic shelf label system according to claim 10 and wherein said at least partially transparent intermediate layer has an index of refraction which is selected so as to minimize reflection at interfaces between said at least partially transparent intermediate layer and both of said LCD display and said protective at least partially transparent cover layer.

12. An electronic shelf label system according to claim 11 and wherein said at least partially transparent intermediate layer is located with respect to said LCD display and to said protective at least partially transparent cover layer so as to substantially eliminate air gaps therebetween.

13. An electronic shelf label system according to claim 10 and wherein said at least partially transparent intermediate layer is located with respect to said LCD display and to said protective at least partially transparent cover layer so as to substantially eliminate air gaps therebetween.

14. An electronic shelf label system according to claim 10 and wherein each electronic shelf label also comprises at least one fuel cell powering said LCD display.

15. An electronic shelf label system according to claim 14 and wherein each of said multiplicity of electronic shelf labels also includes a data communicator providing display data to said LCD display from an external data source and wherein said fuel cell powering said LCD display includes a fuel tank, filling generally the volume of said housing not occupied by said display and said data communicator.

16. An electronic shelf label system according to claim 9 and wherein each electronic shelf label also comprises:

an LCD display; and

at least one fuel cell powering said LCD display.

17. An electronic shelf label system according to claim 16 and wherein each of said multiplicity of electronic shelf labels also includes a data communicator providing display data to said LCD display from an external data source and wherein said fuel cell powering said LCD display includes a fuel tank, filling generally the volume of said housing not occupied by said display and said data communicator.

18. An electronic shelf label comprising:

a housing;

an electrically driven display mounted in said housing;

at least one electrically powered illuminator;

at least one fuel cell powering said electrically driven display and said at least one electrically powered illuminator;

a data communicator providing display data to said electrically driven display from an external data source, and

at least one receiver receiving IR transmissions including;

an IR sensor;

a non-IR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor.

19. An electronic shelf label according to claim 18 and wherein said at least one electrically powered illuminator and said electrically driven display have an average lifetime without requiring repowering of at least six months.

20. An electronic shelf label according to claim 18 and wherein said at least one fuel cell has an average mean power output of less than approximately 50 microwatts.

21. An electronic shelf label according to claim 18 and wherein said at least one fuel cell has an average peak power output of less than approximately 3 milliwatt.

22. An electronic shelf label according to claim 18 and wherein said at least one fuel cell includes a fuel tank, said fuel tank being fluid refuelable without requiring dismounting of said housing from a mounting location.

23. An electronic shelf label according to claim 18 and wherein at least a fuel storage element of said at least one fuel cell is replaceable without requiring dismounting of said housing from a mounting location.

24. An electronic shelf label according to claim 18 and also comprising an at least partially transparent intermediate layer formed over said display and substantially filling a space between said display and said housing.

25. An electronic shelf label according to claim 24 and wherein said at least partially transparent intermediate layer has an index of refraction which is selected so as to minimize reflection at interfaces between said at least partially transparent intermediate layer and both of said display and said housing.

26. An electronic shelf label according to claim 25 and wherein said index of refraction is identical to the index of refraction of at least one of said display and said housing.

27. An electronic shelf label according to claim 24 and wherein said at least partially transparent intermediate layer is located with respect to said display and said housing so as to substantially eliminate air gaps therebetween.

28. An electronic shelf label comprising:

a housing;

an electrically driven display mounted in said housing;

a data communicator providing display data to said electrically driven display from an external data source;

at least one fuel cell powering said electrically driven display, said at least one fuel cell including a fuel tank, filling generally the volume of said housing not occupied by said display and said data communicator; and

at least one receiver receiving IR transmissions including;

an IR sensor;

a non-IR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor.

29. An electronic shelf label according to claim 28 and also comprising at least one electrically powered illuminator,

and wherein said at least one electrically powered illuminator and said electrically driven display have an average lifetime without requiring repowering of at least six months.

30. An electronic shelf label according to claim 28 and wherein said at least one fuel cell has an average mean power output of less than approximately 50 microwatts.

31. An electronic shelf label according to claim 28 and wherein said at least one fuel cell has an average peak power output of less than approximately 3 milliwatt.

32. An electronic shelf label according to claim 28 and wherein said fuel tank is fluid refuelable without requiring dismounting of said housing from a mounting location.

33. An electronic shelf label according to claim 28 and wherein at least a fuel storage element of said at least one fuel cell is replaceable without requiring dismounting of said housing from a mounting location.

34. An electronic shelf label comprising:

a housing;

an electrically driven display mounted in said housing;

at least one electrically powered illuminator;

at least one replaceable energy source powering said electrically driven display and said at least one electrically powered illuminator;

a data communicator providing display data to said electrically driven display from an external data source, said at least one replaceable energy source being replaceable without requiring dismounting of said housing from a mounting location; and

at least one receiver receiving IR transmissions including;

an IR sensor;

a non-IR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor.

35. An electronic shelf label according to claim 34 and also comprising an at least partially transparent intermediate layer formed over said display and substantially filling a space between said display and said housing.

36. An electronic shelf label according to claim 35 and wherein said at least partially transparent intermediate layer has an index of refraction which is selected so as to minimize reflection at interfaces between said at least partially transparent intermediate layer and both of said display and said housing.

37. An electronic shelf label according to claim 35 and wherein said at least partially transparent intermediate layer is located with respect to said display and said housing so as to substantially eliminate air gaps therebetween.

38. An electronic shelf label comprising:

a flexible electrically driven display;

at least one flexible power supply powering said electrically driven display;

a data communicator providing display data to said electrically driven display from an external data source; and

at least one receiver receiving IR transmissions including;

an IR sensor;

a non-IR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor.

39. An electronic shelf label system comprising:

a multiplicity of flexible electronic shelf labels, each including an IR transmitter for transmitting information relating to the electronic shelf label; and

at least one receiver receiving IR transmissions from said multiplicity of flexible electronic shelf labels, said at least one receiver including;

an IR sensor;

a non-TR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor.

40. An electronic shelf label system according to claim 39 and wherein each of said multiplicity of electronic shelf labels comprises a flexible LCD display.

41. An electronic shelf label system according to claim 40 and wherein each electronic shelf label also comprises at least one fuel cell powering said LCD display.

42. An electronic shelf label system according to claim 41 and wherein said fuel cell powering said LCD display includes a fuel tank.

43. An electronic shelf label system according to claim 42 and wherein each of said multiplicity of electronic shelf labels includes a housing wherein said fuel tank is fluid refuelable without requiring dismounting of said housing from a mounting location.

44. An electronic shelf label system according to claim 41 and wherein said at least one fuel cell has an average peak power output of less than approximately 3 milliwatt.

45. An electronic shelf label system comprising:

a multiplicity of electronic shelf labels, each including;

an IR transmitter for transmitting information relating to the electronic shelf label; and

an electronic display for displaying product information;

at least one receiver receiving IR transmissions from said multiplicity of electronic shelf labels, said at least one receiver including;

an IR sensor;

a non-IR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor; and

a product information entry device which is operative to directly write product information to said electronic display when in propinquity thereto.

46. An electronic shelf label system comprising:

a multiplicity of electronic shelf labels, each including;

a first IR transmitter for transmitting information relating to the electronic shelf label;

a first IR receiver for receiving information relating to the electronic shelf label; and

an electronic display for displaying product information based on said information received by said first IR receiver;

at least one second receiver receiving IR transmissions from said multiplicity of electronic shelf labels, said at least one second receiver including;

an IR sensor;

a non-IR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor; and

at least one second transmitter transmitting IR transmissions containing said information to said multiplicity of electronic shelf labels,

said at least one second transmitter being characterized in that it transmits information including both price and product description.

47. An electronic shelf label system according to claim 46 and wherein said electronic display displays both said price and said product description.

48. An electronic shelf label system according to claim 47 and wherein said first receiver receives said information including both price and product description.

49. An electronic shelf label system according to claim 47 and wherein said electronic display comprises a unitary LCD display.

50. An electronic shelf label system according to claim 49 and also comprising a portable product information entry device which is operative to supply product information to said electronic display when in propinquity thereto.

51. An electronic shelf label system according to claim 50 and wherein said portable product information entry device is operative to receive a transmission from said second transmitter including said product information and to provide said product information to said electronic display when in propinquity thereto.

52. An electronic shelf label system according to claim 50 and wherein said portable product information entry device is operative to directly write product information onto said electronic display.

53. An electronic shelf label system according to claim 47 and wherein said first receiver receives said price information and wherein said product information is supplied to said electronic display other than via said first receiver.

54. An electronic shelf label system according to claim 47 and wherein said electronic display comprises at least two separate LCD displays, at least one of which is operative to display price information received via said first receiver and at least one of which is operative to display product information received other than via said first receiver.

55. An electronic shelf label system according to claim 46 and wherein said electronic shelf labels are flexible.

56. An electronic shelf label system comprising:

a multiplicity of electronic shelf labels, each including;

an IR transmitter for transmitting information relating to the electronic shelf label;

an RF receiver for receiving information relating to the electronic shelf label; and

an electronic display for displaying product information based on said information received by said RF receiver;

at least one IR receiver receiving IR transmissions from said multiplicity of electronic shelf labels, said at least one IR receiver including;

an IR sensor;

a non-IR visible light sensor; and

circuitry for employing an output of the non-IR visible light sensor for reducing interference in a signal band sensed by said IR sensor; and

at least one RF transmitter transmitting RF transmissions containing said information to said multiplicity of electronic shelf labels,

said at least one RF transmitter being characterized in that it transmits information including both price and product description.

57. An electronic shelf label system according to claim 56 and wherein said electronic display displays both said price and said product description.

58. An electronic shelf label system according to claim 57 and wherein said RF receiver receives said information including both price and product description.

59. An electronic shelf label system according to claim 57 and wherein said electronic display comprises a unitary LCD display.

60. An electronic shelf label system according to claim 59 and also comprising a portable product information entry device which is operative to supply product information to said electronic display when in propinquity thereto.

61. An electronic shelf label system according to claim 60 and wherein said portable product information entry device is operative to receive a transmission from said RF transmitter including said product information and to provide said product information to said electronic display when in propinquity thereto.

62. An electronic shelf label system according to claim 60 and wherein said portable product information entry device is operative to directly write product information onto said electronic display.

63. An electronic shelf label system according to claim 57 and wherein said RF receiver receives said price information and wherein said product information is supplied to said electronic display other than via said RF receiver.

64. An electronic shelf label system according to claim 57 and wherein said electronic display comprises at least two separate LCD displays, at least one of which is operative to display price information received via said RF receiver and at least one of which is operative to display product information received other than via said RF receiver.

65. An electronic shelf label system according to claim 56 and wherein said electronic shelf labels are flexible.