Alphanumeric keypad and display system and method

• US 20050140659A1
• Filed: 01/07/2005
• Published: 06/30/2005
• Est. Priority Date: 11/09/2001
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Inventors: Hohl, David, Killam, Frances, Trefil, Imre, Yung, Anthony
• Granted Patent: US 7,202,854 B2
• Time in Patent Office: Days
• US Class Current: 345/169
• CPC Class Codes: G06F 21/31 User authentication
• CPC Class Codes: G06F 3/0233 Character input methods

Abstract

Data entry and display apparatus and methods that provide greater efficiency in data processing devices. The apparatus comprises a keypad with a plurality of first keys and plurality of secondary keys, the first keys each having at least one primary alphanumeric symbol and at least one of the first keys having a secondary alphanumeric symbol associated therewith, the first key with the secondary symbol being operable to selectively display the secondary alphanumeric symbols in association with the second keys. The apparatus may further comprise a display, which may be embodied in a common touch screen user interface with the keypad. The methods comprise actuating one of the first keys on the keypad and displaying a set of secondary alphanumeric symbols in association with the secondary keys, and selecting the primary alphanumeric symbol associated with the first key or selecting one of the set of secondary alphanumeric symbols by actuating one of the second keys. Selection and actuation of appropriate combinations of first and second keys allows entry of any character string.

Claims

1-45. -45. (canceled)

46. A data entry apparatus, comprising:

a keypad including a plurality of first keys and a plurality of second keys;

each of said first keys having at least one primary alphanumeric character associated therewith, and at least one of said first keys having at least one secondary alphanumeric character associated therewith; and

at least one of said second keys configured to display said at least one secondary alphanumeric character on said at least one second key upon actuation of said at least one first key, wherein said plurality of first keys remains constant in appearance upon said actuation.

47. The apparatus of claim 46, further comprising a display field operatively coupled to said keypad, said display field configured to selectively display said primary and secondary alphanumeric characters according to actuation of said first and second keys.

48. The apparatus of claim 46, further comprising a touch screen in a superimposed relationship with said keypad.

49. The apparatus of claim 46, further comprising:

a memory operatively coupled to said keypad;

a direct memory access controller operatively coupled to said memory;

a cyclic redundancy check circuit operatively coupled to said direct memory access controller;

said direct memory access controller configured to transfer data from said memory to said cyclic redundancy check circuit; and

said cyclic redundancy check circuit configured to calculate a check value for said data.

50. The apparatus of claim 49, further comprising:

stored programming configured to seed said cyclic redundancy check circuit with a selected initial value;

stored programming configured to set up said direct memory access controller with a source address for a data stream, a destination address for said data stream, and a size for said data stream; and

stored programming configured to initiate transfer of said data stream by said direct memory access controller from said memory to said cyclic redundancy check circuit.

51. The apparatus of claim 50, further comprising:

stored programming configured to read said calculated cyclic redundancy check value from said cyclic redundancy check circuit; and

stored programming configured to store said calculated cyclic redundancy check value in said memory.

52. The apparatus of claim 49, further comprising a display controller operatively coupled to said direct memory access controller, said direct memory access controller configured to transfer a display data stream from said memory to said display controller.

53. The apparatus of claim 52, further comprising:

stored programming configured to set up said display controller with a display address for said display data stream;

stored programming configured to set up said direct memory access controller with a source address for said display data stream, a destination address for said display data stream, and a size for said display data stream; and

stored programming configured to initiate transfer of said display data stream by said direct memory access controller to said display controller.

54. The data entry and display apparatus of claim 49, further comprising:

a stored list of cyclic redundancy check values corresponding to authorized strings of alphanumeric characters; and

stored programming configured to compare a cyclic redundancy check value for an input string of alphanumeric characters entered on said keypad to said stored list of cyclic redundancy check values, and determine validity of said cyclic redundancy check value for said input string.

55. A data processing apparatus, comprising:

a keypad including a plurality of first keys and a plurality of second keys;

said first keys each having a primary alphanumeric symbol associated therewith;

a plurality of said first keys having secondary alphanumeric symbols associated therewith; and

each said second key configured to display one said secondary alphanumeric character on said second key upon actuation of said associated first key, wherein said plurality of first keys remains constant in appearance upon said actuation.

56. The apparatus of claim 55, further comprising a display field operatively coupled to said keypad, said display field configured to selectively display said primary and secondary alphanumeric symbols according to actuation of said first keys and second keys.

57. The apparatus of claim 55, further comprising a touch screen in a superimposed relationship with said keypad.

58. The apparatus of claim 55, further comprising:

a memory operatively coupled to said keypad;

a direct memory access controller operatively coupled to said memory;

a cyclic redundancy check circuit operatively coupled to said direct memory access controller;

said direct memory access controller configured to transfer data from said memory to said cyclic redundancy check circuit; and

said cyclic redundancy check circuit configured to calculate a check value for said data.

59. The data processing apparatus of claim 58, further comprising:

programming stored in said memory capable of seeding said cyclic redundancy check circuit with a selected initial value;

programming stored in said memory capable of setting up said direct memory access controller with a source address for a data stream, a destination address for said data stream, and a size for said data stream; and

programming stored in said memory capable of initiating transfer of said data stream by said direct memory access controller to said cyclic redundancy check circuit.

60. The data processing apparatus of claim 58, further comprising a display controller operatively coupled to said direct memory access controller and said cyclic redundancy check circuit, said direct memory access controller configured to transfer a display data stream to said display controller.

61. The data processing apparatus of claim 60, further comprising:

programming stored in said memory capable of setting up said display controller with a display address for said display data stream;

programming stored in said memory capable of setting up said direct memory access controller with a source address for said display data stream, a destination address for said display data stream, and a size for said display data stream; and

programming stored in said memory capable of initiating transfer of said display data stream by said direct memory access controller to said display controller.

62. The data processing apparatus of claim 58, further comprising:

a stored list of cyclic redundancy check values corresponding to authorized strings of alphanumeric characters; and

programming stored in said memory capable of comparing a cyclic redundancy check value for an input string of alphanumeric characters entered on said keypad to said stored list of cyclic redundancy check values, and determining validity of said cyclic redundancy check value for said input string.

63. A method for data entry and display, comprising:

providing a keypad including a plurality of first keys and a plurality of second keys, each said first key having at least one primary alphanumeric symbol associated therewith and at least one of said first keys having a set of secondary alphanumeric symbols associated therewith;

actuating said at least one first key having an associated said set of secondary symbols; and

displaying on at least one of said second keys said set of said secondary alphanumeric characters of said actuated first key in association with said second keys; and

maintaining the appearance of said plurality of first key upon said actuating.

64. The method of claim 63, further comprising selecting said primary alphanumeric symbol associated with said actuated first key.

65. The method of claim 63, further comprising selecting one of said set of secondary alphanumeric symbols of said actuated first key by actuating a corresponding one of said second keys displaying said secondary alphanumeric symbols.

66. The method of claim 65, further comprising displaying said selected secondary alphanumeric symbols in a display field.

67. A method for data entry and display, comprising:

providing a keypad including a plurality of primary keys and a plurality of secondary keys, each said primary key having a first alphanumeric character associated therewith and at least one of said primary keys having a set of second alphanumeric characters associated therewith;

actuating said primary key having an associated said set of secondary alphanumeric symbols; and

displaying on at least one of said secondary keys said set of said second alphanumeric characters of said actuated primary key;

maintaining the appearance of said plurality of primary keys upon said actuating.

68. The method of claim 67, further comprising selecting one of said set of second alphanumeric characters associated with said actuated primary key.

69. The method of claim 68, wherein said selecting further comprises actuating said at least one of said secondary keys on which said set of said second alphanumeric character is displayed.

70. The method of claim 67, wherein said displaying of said selected set of said second alphanumeric characters comprises displaying one said second alphanumeric character from said set on a corresponding one of said secondary keys.

71. The method of claim 67, comprising:

entering a plurality of alphanumeric characters on said keypad to form a character string; and

processing data associated with said character string; and

entering said data into a memory.

72. The method of claim 70, further comprising transferring said data from said memory to a cyclic redundancy check circuit as a data stream using a direct memory access controller.

73. The method of claim 72, further comprising calculating a cyclic redundancy check value for said data stream by said cyclic redundancy check circuit.

74. The method of claim 72, wherein said transferring said data comprises:

seeding, by software, of said cyclic redundancy check circuit with a selected initial value;

setting up said direct memory access controller, by said software, with a source address for said data stream, a destination address for said data stream, and a size for said data stream;

initiating, by said software, transfer of said data stream by said direct memory access controller to said cyclic redundancy check circuit; and

transferring said data stream to said cyclic redundancy check circuit by said direct memory access controller.

75. The method of claim 71, further comprising transferring display data as a display data stream from said memory to a display controller using a direct memory access controller.

76. The method of claim 75, wherein said transferring said display data comprises:

setting up said display controller, by software, with a display address for said display data stream;

setting up said direct memory access controller, by said software, with a source address for said display data stream, a destination address for said display data stream, and a size for said display data stream; and

initiating transfer, by said software, of said display data stream by said direct memory access controller to said display controller.

77. The method of claim 71, wherein said data stream represents data corresponding to a user-entered identification character string, and said cyclic redundancy check value comprises an identification cyclic redundancy check value.

78. The method of claim 77, further comprising creating a list of authorized cyclic redundancy check values and storing said list of authorized cyclic redundancy check values in said memory.

79. The method of claim 78, further comprising:

comparing said identification cyclic redundancy check value to said stored list of authorized cyclic redundancy check values; and

determining authorization for said identification cyclic redundancy check value.