Abstract: An integrated circuit, a non-contact IC card, a reader/writer, a wireless communications method, and a computer program are provided to improve communication. The integrated circuit configured to execute wireless communication by means of magnetic field. The integrated circuit has a resonance circuit having resonance frequencies of a plurality of levels, a confirmation block configured to confirm whether a predetermined condition is satisfied, and a switching block configured to change the resonance frequencies if the predetermined condition is found satisfied as a result of the confirmation.

Abstract: An integrated circuit, a non-contact IC card, a reader/writer, a wireless communications method, and a computer program are provided to improve communication. The integrated circuit configured to execute wireless communication by means of magnetic field. The integrated circuit has a resonance circuit having resonance frequencies of a plurality of levels, a confirmation block configured to confirm whether a predetermined condition is satisfied, and a switching block configured to change the resonance frequencies if the predetermined condition is found satisfied as a result of the confirmation.

Abstract: An integrated circuit, a non-contact IC card, a reader/writer, a wireless communications method, and a computer program are provided to improve communication. The integrated circuit configured to execute wireless communication by means of magnetic field. The integrated circuit has a resonance circuit having resonance frequencies of a plurality of levels, a confirmation block configured to confirm whether a predetermined condition is satisfied, and a switching block configured to change the resonance frequencies if the predetermined condition is found satisfied as a result of the confirmation.

Abstract: Disclosed herein is a power feeding device including: power transmitting section which transmits electric power by way of a magnetic field; a set of first and second electrodes which are spaced from each other; a power supply which applies a voltage between the first and second electrodes; and a detector which detects whether foreign matter is present on the power transmitting section or not based on the voltage applied by the power supply.

Abstract: Disclosed herein is an electronic apparatus, including an electric power receiving portion receiving an electric power from a power feeding apparatus by using a magnetic field, and a detecting portion detecting presence or absence of a foreign object between said power feeding apparatus and said detecting portion.

Abstract: Disclosed herein is a wireless charging system, including: a primary device that includes a power transmitter adapted to transmit power wirelessly; and a secondary device that includes a power receiver adapted to receive power transmitted wirelessly from the power transmitter, wherein the secondary device also includes a sensor adapted to detect any anomaly in the power transmission path between the power transmitter and receiver.

Abstract: A feed system includes a plurality of electronic devices; and a feed apparatus having a power transmission section performing electric power transmission using a magnetic field to the plurality of electronic devices. Each of the electronic devices includes a power receiving section receiving electric power transmitted from the power transmission section, and a switching section switching whether or not to carry out charging operation based on the electric power received by the power receiving section, according to time sharing control by a system control section.

Abstract: Disclosed herein is a power relaying apparatus provided between: a power supplying apparatus including a power supplying resonance device and a power supplying power supply section for supplying an AC current to the power supplying resonance device; and a power receiving apparatus having a power receiving resonance device for receiving a power from the power supplying apparatus by adoption of a resonance method, the power relaying apparatus including a power relaying resonance device resonating between the power supplying resonance device and the power receiving resonance device, wherein the power relaying resonance device is fixed at a predetermined position by making use of an insulation member.

Abstract: An integrated circuit, a non-contact IC card, a reader/writer, a wireless communications method, and a computer program are provided to improve communication. The integrated circuit configured to execute wireless communication by means of magnetic field. The integrated circuit has a resonance circuit having resonance frequencies of a plurality of levels, a confirmation block configured to confirm whether a predetermined condition is satisfied, and a switching block configured to change the resonance frequencies if the predetermined condition is found satisfied as a result of the confirmation.

Abstract: An integrated circuit, a non-contact IC card, a reader/writer, a wireless communications method, and a computer program are provided to improve communication. The integrated circuit configured to execute wireless communication by means of magnetic field. The integrated circuit has a resonance circuit having resonance frequencies of a plurality of levels, a confirmation block configured to confirm whether a predetermined condition is satisfied, and a switching block configured to change the resonance frequencies if the predetermined condition is found satisfied as a result of the confirmation.

Abstract: An integrated circuit, a non-contact IC card, a reader/writer, a wireless communications method, and a computer program are provided to improve communication. The integrated circuit configured to execute wireless communication by means of magnetic field. The integrated circuit has a resonance circuit having resonance frequencies of a plurality of levels, a confirmation block configured to confirm whether a predetermined condition is satisfied, and a switching block configured to change the resonance frequencies if the predetermined condition is found satisfied as a result of the confirmation.

Abstract: A receiver for receiving a digital audio broadcast by which digital audio data and incidental control data are sent out includes a reception circuit for receiving the digital audio broadcast, a decoder circuit for extracting the digital audio data and the control data from a signal received by the reception circuit, a D/A converter for performing D/A conversion of the thus extracted digital audio data into an analog audio signal and outputting the analog audio signal, a controller for controlling a characteristic of the analog audio signal in accordance with the extracted control data, and a memory into which the one of the digital audio data and the control data which had been extracted at an earlier time by the decoder circuit is written.

Abstract: A digital audio receiver provides an audio signal line of the receiver with a DRS circuit for compressing a dynamic range of audio signals passing through the audio signal line; and the DRS circuit, provides a control section for controlling gains for said audio signals in accordance with dynamic range control (DRC) data sent from broadcasting stations, thus enabling dynamic range control functions without circuit complication.

Abstract: A digital filter apparatus including a pair of infinite impulse response (IIR) digital filters connected in parallel for selectively controlling an output level of an input signal fed to the filter apparatus. One IIR digital filter is a low-pass filter and the other IIR digital filter is an all-pass filter. A pair of level control circuits are respectively connected to outputs of the pair of IIR digital filters, and an adder combines outputs of the level control circuits to form the filter apparatus output. Phase characteristics of the pair of IIR digital filters with respect to a frequency are made substantially coincident with each other and control levels of the level control circuits are adjusted so that the output level of the filter apparatus in a predetermined frequency range is controlled.