Abstract: A power reception apparatus includes a power receiving circuit to be connected to a power reception side resonance circuit including a power reception side coil and a power reception side capacitance, for generating an output power based on power received by the power reception side coil utilizing magnetic resonance, a changing/short-circuiting circuit configured to change a resonance frequency of the power reception side resonance circuit from a reference frequency that is the resonance frequency when receiving the power, or to short-circuit the power reception side coil, before receiving the power.

Abstract: A personal identification device has: a light source portion that emits infrared light with a first wavelength at the time of reading a vein pattern, and emits infrared light with a second wavelength longer than the first wavelength at the time of reading a fingerprint pattern; a light receiving sensor portion that detects a component of the infrared light reflected from a fingertip after being shone thereon from the light source portion; an amplifying portion that amplifies a detection signal obtained by the light receiving sensor portion; an A/D converting portion that converts an analog signal obtained by the amplifying portion into a digital signal; a data distributing portion that distributes the digital signal obtained by the A/D converting portion into two groups of data, of which one is vein pattern data and the other is fingerprint pattern data; and a processing portion that verifies the identity of a person based on the vein pattern data and the fingerprint pattern data distributed by the data distr

Abstract: A filter circuit has: a first and a second current mirror circuit that are each built with a plurality of transistors and that respectively pass a first and a second mirror current according to a constant current; an input terminal via which an input pulse signal is fed in; a first transistor that, in response to the signal fed in via the input terminal and by using a supply voltage, makes the first current mirror circuit operate; a second transistor that, operating in inverted synchronism with the first transistor, in response to the signal fed in via the input terminal and by using a ground voltage, makes the second current mirror circuit operate; a capacitor that is charged by the first mirror current and that is discharged by the second mirror current; and an output terminal via which a voltage at one end of the capacitor is fed out.

Abstract: A personal identification device has: a light source portion that emits infrared light with a first wavelength at the time of reading a vein pattern, and emits infrared light with a second wavelength longer than the first wavelength at the time of reading a fingerprint pattern; a light receiving sensor portion that detects a component of the infrared light reflected from a fingertip after being shone thereon from the light source portion; an amplifying portion that amplifies a detection signal obtained by the light receiving sensor portion; an A/D converting portion that converts an analog signal obtained by the amplifying portion into a digital signal; a data distributing portion that distributes the digital signal obtained by the A/D converting portion into two groups of data, of which one is vein pattern data and the other is fingerprint pattern data; and a processing portion that verifies the identity of a person based on the vein pattern data and the fingerprint pattern data distributed by the data distr

Abstract: There is provided a liquid crystal display device including a first transparent substrate and a second transparent substrate pasted to each other via a liquid crystal sealing space in between, and provided with a predetermined display region. The first transparent substrate is integrally formed with an extension extending further than an edge of the second transparent substrate and longitudinally of the edge of the second transparent substrate. The extension is provided with at least one semiconductor chip having a longitudinal axis laid longitudinally of the extension. The extension is formed with an external connection terminal region including a plurality of terminals. The external connection terminal region does not overlap the semiconductor chip widthwise of the extension.

Abstract: A filter circuit has: a first and a second current mirror circuit that are each built with a plurality of transistors and that respectively pass a first and a second mirror current according to a constant current; an input terminal via which an input pulse signal is fed in; a first transistor that, in response to the signal fed in via the input terminal and by using a supply voltage, makes the first current mirror circuit operate; a second transistor that, operating in inverted synchronism with the first transistor, in response to the signal fed in via the input terminal and by using a ground voltage, makes the second current mirror circuit operate; a capacitor that is charged by the first mirror current and that is discharged by the second mirror current; and an output terminal via which a voltage at one end of the capacitor is fed out.

Abstract: An optical signal processor capable of adding pixel-output voltages obtained from multiple photoelectric conversion elements. The optical signal processor is adapted to store the output signals sent from multiple photoelectric conversion elements in pixel-output voltage holding capacitors to generate the sum of the pixel-output voltages. At least two of the multiple pixel-output voltages are simultaneously coupled to the common signal line to add them up by an integration amplification circuit and output the added output voltage from the output end of the optical signal processor. Thus, the pixel-output voltages held by the multiple pixel-output holding circuits are mixed (or added) on the common signal line to a higher voltage before they are outputted as the output voltage.

Abstract: In an IC card 30 is sealed an IC chip 70 provided with an exposure sensor 84. When exposure sensor 84 detects that IC card 30 has been opened, exposure sensor 84 outputs an exposure detection signal to a CPU 76. In response to the exposure detection signal, CPU 76 provides a predetermined operation, such as erasure of data in a non-volatile memory 78. As such, the data in non-volatile memory 78 cannot be obtained if IC card 30 is improperly opened to check the data in non-volatile memory 78. Thus the IC card can obtain an enhanced data security.

Abstract: In an IC card 30 is sealed an IC chip 70 provided with an exposure sensor 84. When exposure sensor 84 detects that IC card 30 has been opened, exposure sensor 84 outputs an exposure detection signal to a CPU 76. In response to the exposure detection signal, CPU 76 provides a predetermined operation, such as erasure of data in a non-volatile memory 78. As such, the data in non-volatile memory 78 cannot be obtained if IC card 30 is improperly opened to check the data in non-volatile memory 78. Thus the IC card can obtain an enhanced data security.

Abstract: Upon receiving an encipherment command, an enciphered authentication data generation circuit generates an enciphered authentication data based on a basic authentication data including a random number portion using an encipherment rule. The encipherment rule changes according to the number of supplied encipherment commands. A transmission circuit 7 transmits the enciphered authentication data. A reception circuit 9 receives the enciphered authentication data transmitted from a second device 300. A prohibition command output circuit 11 determines whether the enciphered authentication data transmitted from the second device 300 matches with an enciphered authentication data that would be generated if the same number of encipherment commands were supplied to an enciphered authentication data generation circuit of a first device 200, and outputs a prohibition command to prohibit a transmission of the data to be transmitted when the determination result is negative.

Abstract: In an IC card 30 is sealed an IC chip 70 provided with an exposure sensor 84. When exposure sensor 84 detects that IC card 30 has been opened, exposure sensor 84 outputs an exposure detection signal to a CPU 76. In response to the exposure detection signal, CPU 76 provides a predetermined operation, such as erasure of data in a non-volatile memory 78. As such, the data in non-volatile memory 78 cannot be obtained if IC card 30 is improperly opened to check the data in non-volatile memory 78. Thus the IC card can obtain an enhanced data security.

Abstract: There is provided a liquid crystal display device including a first transparent substrate and a second transparent substrate pasted to each other via a liquid crystal sealing space in between, and provided with a predetermined display region. The first transparent substrate is integrally formed with an extension extending further than an edge of the second transparent substrate and longitudinally of the edge of the second transparent substrate. The extension is provided with at least one semiconductor chip having a longitudinal axis laid longitudinally of the extension. The extension is formed with an external connection terminal region including a plurality of terminals. The external connection terminal region does not overlap the semiconductor chip widthwise of the extension.

Abstract: An IC card 3 has an ID number ID0, for permitting itself to be identified, stored in memory provided therein. The IC card also has additional ID numbers ID1 to IDn stored in memory areas 17-1 to 17-n that are secured therein so as to be allocated to the individual providers that manage the reader/writers with which the IC card communicates. These additional ID numbers ID1 to IDn are used to prevent unauthorized use of the IC card, and are issued so as to be unique to the IC card by the individual providers that use the memory areas 17-1 to 17-n. Thus, the additional ID numbers ID1 to IDn differ from one IC card to another.

Abstract: A private key write control unit (48) permits writing of a private key just once into a private key storage unit (36) after initialization. Similarly, a particular data write control unit (42) permits writing of particular data only once into a data storage unit (34) after initialization. Since a person other than the IC card manufacturer can write in a private key or particular data after the fabrication stage of the IC card, flexibility in the application of IC cards can be ensured. Also, improper usage of a card can be prevented since the written data is inhibited of being rewritten. The IC card manufacturer can initialize the data storage unit (34) and the private key storage unit (36) by a data initialization unit (44) and a private key initialization unit (46). Therefore, the cost of an IC card can be reduced by allowing reusage of IC cards.

Abstract: In a communications system having an authentication function, a relaying apparatus 3 is used. This relaying apparatus 3 has an authentication circuit 6 for checking whether reader/writers 2-1 to 2-n are authentic or not by detecting whether or not the authentication signals from the reader/writers 2-1 to 2-n have been subjected to a predetermined calculation operation within the reader/writers 2-1 to 2-n, a multiplexer 5 for switching the lines connecting between the reader/writers 2-1 to 2-n and, a PC 4 in accordance with the results of the authentication processes performed by the authentication circuit 6, and a calculation circuit 7 for performing a predetermined calculation operation on the authentication signals from the reader/writers 2-1 to 2-n and for feeding them back to the reader/writers 2-1 to 2-n.

Abstract: A memory (1) in a non contact type IC card (100) includes a data protection region (B2) storing data requiring security and an region (B1) storing other data. A main control circuit (2) generates data to be stored and designates a location for data storage in the region (B1) or the data protection region (B2) according to a content of the data. An address non selecting circuit (4) selects whether the generated data is to be written into the location in the data protection region (B2) designated by the main control circuit (2) according to a state of a state setting circuit (3).

Abstract: There is provided a liquid crystal display device including a first transparent substrate and a second transparent substrate pasted to each other via a liquid crystal sealing space in between, and provided with a predetermined display region. The first transparent substrate is integrally formed with an extension extending further than an edge of the second transparent substrate and longitudinally of the edge of the second transparent substrate. The extension is provided with at least one semiconductor chip having a longitudinal axis laid longitudinally of the extension. The extension is formed with an external connection terminal region including a plurality of terminals. The external connection terminal region does not overlap the semiconductor chip longitudinally of the extension.

Abstract: Data communication means (82) performs data communication and power transmission by utilizing electromagnetic waves. Conversion method designating means (88) is provided with output value measuring means (52) which measures the magnitude of the fluctuating output of a resonance circuit (40), and conversion method select means (100) which selects a conversion method to be executed in accordance with the obtained magnitude of the output of the resonance circuit (40). Data converting means (84) is provided with three conversion methods and performs conversion between original data and processed data by executing conversion in accordance with one of the conversion methods designated by the select means (100). The safety on security can thus be improved with a simple constitution.

Abstract: In a non-contact IC card, a driving portion 5 sequentially switches a resonance frequency of a resonance circuit 1. A reference voltage generating portion 6 receives an output voltage of resonance circuit 1 for outputting a prescribed reference voltage. An output value measuring portion 7 measures a magnitude of the output voltage of resonance circuit 1 at each resonance frequency using the reference voltage as a reference. An output value storing portion 8 stores a measurement value (an output value). A manner determining portion 9 selects the largest one of the output values stored in output value storing portion 8, and determines a switching manner corresponding thereto as a suitable switching manner. Thus, the suitable switching manner allowing the most efficient power supply can be achieved.

Abstract: An IC card (80) has a communication module (20) embedded in a core member (30). The communication module (20) has a contact terminal (24), an antenna (60) and an IC chip (82) mounted on the same circuit board (22) for making the assembly work easier. The contact terminal (24) is formed at an upper surface of the circuit board (22) to be exposed from an opening (26a) of a surface material (26). The antenna (60) and the IC chip (82) are provided to a lower surface of the circuit board (22) to indirectly face the contact terminal (24). The IC chip (82) automatically adjusts the resonance frequency of the antenna (60) such that an output from the antenna (60) has the maximum value constantly.