Identification card including switching means for built-in battery

Claim 2

An identification card (1) characterized by comprising: a built-in type battery (14); means (11) for processing data necessary for the identification card (1); storage means (13) for storing at least said data upon being energized by said battery (14); first switching means (15) interposed between said battery (14) and said storage means (13); and switching control means (16), energized by said battery (14), for controlling said switching means (15) to be turned off in a first condition and to be turned on in a second condition in response to a command signal externally supplied via said identification card (1) to said switching control means (16), whereby said storage means (13) is not energized by said battery (14) in the first condition, but is energized in the second condition.

Claim 3

An identification card (1) as claimed in claim 1, characterized in that said switching means is a MOS (metal oxide semiconductor) field effect transistor (15).

Claim 4

An identification card (1) as claimed in claim 1, characterized in that said switching control means is a latch circuit (16) fabricated of CMOS (complementary metal oxide semiconductor) transistors.

Claim 5

An identification card (1) as claimed in claim 1, characterized in that said built-in type battery is a paper-thin battery (14).

Claim 6

An identification card (1) as claimed in claim 1, characterized in that said storage means is a RAM (random access memory) (13).

Claim 7

An identification card (1) as claimed in claim 1, characterized in that said storage means is constructed of a RAM and a PROM (programmable read only memory) (18).

Claim 8

An identification card (1) as claimed in claim 1, characterized by further comprising: a keyboard (2) having at least a power on/off key (26) and an identification card function key (22; 24); second switching means (19) connected between a load side of said first switching means (15) and said processing means (11), the supply of power to said processing means (11) from said battery (14) being under the control of said second switching means (19) through operation of said power on/off key (26); and a display panel (3), connected to said processing means (11), for displaying said data.

Claim 9

An identification card (1) as claimed in claim 1, characterized by further comprising electrical connecting means (4) connected to said processing means (11) for receiving at least said external command signal.

Claim 10

An identification card (1) as claimed in claim 1, characterized by further comprising a solar cell panel (86) connected to said built-in type battery through a reverse current protection diode (88).

Claim 11

An identification card (40) characterized by comprising: a built-in type battery (14); means (50) for processing first data necessary for the identification card (40) and second data necessary for arithmetic operations; storage means (13; 52) for storing said first and second data upon being energized by said battery (14); first switching means (15) interposed between said battery (14) and said storage means (13; 52); and switching control means (16), energized by said battery (14), for controlling said switching means (15) to be turned off in a first condition and to be turned on in a second condition in response to a command signal externally supplied via said identification card (40) to said switching control means (16), whereby said storage means (13; 52) is not energized by said battery (14) in the first condition, but is energized in the second condition.

Claim 12

An identification card (40) characterized by comprising: a built-in type battery (14); means (50) for processing first data necessary for the identification card (40) and second data necessary for arithmetic operations; storage means (13; 52) for storing said first and second data upon being energized by said battery (14); first switching means (15) interposed between said battery (14) and said storage means (13; 52); and switching control means (16), energized by said battery (14), for controlling said switching means (15) to be turned off in a first condition and to be turned on in a second condition in response to a command signal externally supplied via said identification card (40) to said switching control means (16), whereby said storage means (13; 52) is not energized by said battery (14) in the first condition, but is energized in the second condition.

Claim 13

An identification card (40) as claimed in claim 10, characterized by further comprising: a keyboard (42) including arithmetic operation keys (42; 46), a power on/off key (26) and an identification card function key (24); second switching means (19) connected between a load side of said first switching means (15) and said processing means (50), the supply of power to said processing means (50) from said battery (14) being under the control of said second switching means (19) through operation of said power on/off key (26); and a display panel (3), connected to said processing means (50), for displaying said first and second data.

Claim 14

An identification card (80) as claimed in claim 10, characterized by further comprising a solar cell panel (82) connected to said built-in type battery (14) through a reverse current protection diode (88).