Abstract: This technology relates to an information processing device and an information processing method capable of detecting that at least one of data and a parameter of a command is falsified. A command reception unit of an IC card receives a read command from a reader/writer through an antenna. A MAC calculation unit calculates a MAC based on a read address included in a parameter of the read command and read data to be transmitted to the reader/writer. A response transmission unit transmits the read data and the MAC to the reader/writer through the antenna. This technology is applicable to the IC card, for example.

Abstract: This technology relates to an information processing device and an information processing method capable of detecting that at least one of data and a parameter of a command is falsified. A command reception unit of an IC card receives a read command from a reader/writer through an antenna. A MAC calculation unit calculates a MAC based on a read address included in a parameter of the read command and read data to be transmitted to the reader/writer. A response transmission unit transmits the read data and the MAC to the reader/writer through the antenna. This technology is applicable to the IC card, for example.

Abstract: A communication device includes: demodulating means for demodulating a transmission signal from another communication device that performs noncontact communication; calculating means for performing at least one of addition and subtraction of a predetermined voltage according to a logical value of a demodulated signal obtained by demodulation by the demodulating means; determining means for determining a communication system of the transmission signal transmitted by the other communication device by comparing a calculation result of the calculating means at predetermined timing after a lapse of a predetermined time from the start of communication with a threshold voltage; and transmitting means for transmitting predetermined data to the other communication device in the communication system determined by the determining means among plural communication systems that the device itself can support.

Abstract: A communication device includes: demodulating means for demodulating a transmission signal from another communication device that performs noncontact communication; calculating means for performing at least one of addition and subtraction of a predetermined voltage according to a logical value of a demodulated signal obtained by demodulation by the demodulating means; determining means for determining a communication system of the transmission signal transmitted by the other communication device by comparing a calculation result of the calculating means at predetermined timing after a lapse of a predetermined time from the start of communication with a threshold voltage; and transmitting means for transmitting predetermined data to the other communication device in the communication system determined by the determining means among plural communication systems that the device itself can support.

Abstract: Picture processing apparatus has a pixel judgment circuit and a pixel correction circuit. The pixel judgment circuit includes a target pixel detection circuit for detecting a target pixel having a peak level from the input picture signal, and an edge detection circuit for detecting edges, each present at a distance of n pixels (n≧1) preceding and succeeding the target pixel. Further, the pixel correction circuit has a correction coefficient selection circuit, wherein a peak level correction coefficient is selected according to an output from the target pixel detection circuit, and an edge correction coefficient is selected according to an edge detection output. With the picture processing apparatus, a level of the target pixel is corrected and an edge of the input picture signal is corrected with the pixels of the input picture signal being corrected according to the peak level correction coefficient and the edge correction coefficient.

Abstract: The picture processing apparatus of the present invention has pixel judgment means and pixel correction means. The pixel judgment means comprises target pixel detection means for detecting a target pixel having a peak level out of the input picture signal, and edge detection means for detecting edges, each presenting at a distance of n pixels (n≧1) preceding and succeeding the target pixel. Further, the pixel correction means has correction coefficient selection means wherein a peak level correction coefficient is selected according to an output from the target pixel detection means, and an edge correction coefficient is selected according to an edge detection output. With the picture processing apparatus of the present invention, a level of the target pixel is corrected and an edge of the input picture signal is corrected with the pixels of the input picture signal being corrected according to the peak level correction coefficient and the edge correction coefficient.