Abstract: A base station used in a traffic communication system includes a communicator configured to receive, via wireless communication, information transmitted from a vehicle traveling on a road, and a controller configured to identify, based on the information received by the communicator, a traveling behavior including a travel route of the vehicle on the road. The controller is configured to execute first processing for performing statistical learning or machine learning on a plurality of the traveling behaviors respectively identified for a plurality of the vehicles traveling on the road, and second processing for determining, based on a result of the first processing, whether a traffic obstacle is present on the road and a position of the traffic obstacle on the road.

Abstract: A base station used in a traffic communication system includes a communicator configured to receive, via wireless communication, information transmitted from a vehicle traveling on a road, and a controller configured to identify, based on the information received by the communicator, a traveling behavior including a travel route of the vehicle on the road. The controller is configured to execute first processing for performing statistical learning or machine learning on a plurality of the traveling behaviors respectively identified for a plurality of the vehicles traveling on the road, and second processing for determining, based on a result of the first processing, whether a traffic obstacle is present on the road and a position of the traffic obstacle on the road.

Abstract: A wireless communication system includes: a sensor device configured to perform communications through short-range wireless communication; and a communication device configured to receive data transmitted from the sensor device, wherein when wireless communication is mutually disconnected, one of the communication device and the sensor device determines a predetermined reconnection condition and notifies an other of the communication device and the sensor device of the reconnection condition, and then the communication device and the sensor device mutually disconnect wireless communication, and when the communication device and the sensor device each satisfy the reconnection condition, the communication device and the sensor device restart mutually the communication.

Abstract: A wireless communication system includes: a sensor device configured to perform communications through short-range wireless communication; and a communication device configured to receive data transmitted from the sensor device, wherein when wireless communication is mutually disconnected, one of the communication device and the sensor device determines a predetermined reconnection condition and notifies an other of the communication device and the sensor device of the reconnection condition, and then the communication device and the sensor device mutually disconnect wireless communication, and when the communication device and the sensor device each satisfy the reconnection condition, the communication device and the sensor device restart mutually the communication.

Abstract: When new music content is generated on the basis of replication of original music content, additional information including information indicating that the generated new music content is based on replication and replication source information identifying a replicated-from source of the replicated content is generated and added to the new music content based on the replication. When the new (i.e., replicated) music content is to be used, a search is made for original music content on the basis of information identifying a replicated-from source and use of the new (replicated) music content is permitted only when the c original music content has been successfully found. Such arrangements reliably allow the replicated content to be used by a given person only when the person possesses the original music content.

Abstract: An FFT processing unit performs an FFT process on an OFDM signal received by a reception unit. Based on an output signal of the FFT processing unit, an interference wave level acquisition unit obtains a signal level of an interference wave in a unit radio resource not used by the base station with respect to each of a plurality of candidate timings for the reference timing in the base station. A reference timing adjustment unit determines a new timing of the reference timing from the plurality of candidate timings based on the signal level of the interference wave obtained by the interference wave level acquisition unit.

Abstract: Communication systems and methods are disclosed. A number of interference sources are obtained based on received signals. A communication is performed using a plurality of antennas and a transmission directivity of the antennas is controlled when transmitting signals. At least null-steering from among null-steering and beam-forming is performed in relation to the transmission directivity of the antennas, when the number of interference sources is less than a first threshold value. Only the beam-forming is performed from among the null-steering and the beam-forming in relation to the transmission directivity of the antennas, when the number of interference sources is greater than the first threshold value.

Abstract: A generator comprises: a stator plate having a first fixed permanent magnet including a plurality of magnets on one side and a second fixed permanent magnet including a plurality of magnets on the other side; a first armature having a first switching winding, a first output winding, and a first back-electromotive force prevention winding on a fixed first ring core; a second armature having a second switching winding, a second output winding, and a second back-electromotive force prevention winding on a fixed second ring core; a first rotor plate having a first rotary permanent magnet; and a second rotor plate having a second rotary permanent magnet. The first and second rotor plates are coupled to each other by a driving shaft.

Abstract: An FFT processing unit performs an FFT process on an OFDM signal received by a reception unit. Based on an output signal of the FFT processing unit, an interference wave level acquisition unit obtains a signal level of an interference wave in a unit radio resource not used by the base station with respect to each of a plurality of candidate timings for the reference timing in the base station. A reference timing adjustment unit determines a new timing of the reference timing from the plurality of candidate timings based on the signal level of the interference wave obtained by the interference wave level acquisition unit.

Abstract: Communication systems and methods are disclosed. A number of interference sources are obtained based on received signals. A communication is performed using a plurality of antennas and a transmission directivity of the antennas is controlled when transmitting signals. At least null-steering from among null-steering and beam-forming is performed in relation to the transmission directivity of the antennas, when the number of interference sources is less than a first threshold value. Only the beam-forming is performed from among the null-steering and the beam-forming in relation to the transmission directivity of the antennas, when the number of interference sources is greater than the first threshold value.

Abstract: An automatic performance apparatus which can make it difficult to discriminate between music contents which require copyright protection and music contents which do not require copyright protection. An encrypted content file distributed by a contents distributing site via a network is received, and copyright protection information indicative of whether or not the received encrypted content file requires copyright protection is acquired. The received encrypted content file is decoded to generate a decoded content file. When the acquired copyright protection information indicates that copyright protection is required, a storage medium stores the encrypted content file, or a re-encrypted content file generated by re-encrypting the decoded content file by an encrypting method different from an encrypting method used to obtain the encrypted content file.

Abstract: Provided is an electric motor which is simple to design and manufacture, and can be operated by a small current. The electric motor is comprised of a stator 55 having a first disk 45 and a second disk 50, a first ring core 10 having a first switching winding 15 divided into a winding part and a gap part, a second ring core 12 having a second switching winding 20 divided into a winding part and a gap part, and a first rotor 35 having a third disk 25 and a second rotor 40 having a fourth disk 30 mutually connected by a driving shaft 60. The first and second switching windings 15, 20 include first and second power supplies 125-1, -2, and first and second switches 75-1, -2, respectively.

Abstract: In an electronic musical apparatus, a media ID (MD1, MD2, MD3, MD4, MD5) is associated with each recording media of a memory card 8, hard disk device 10, flash memory ROM 11, CD-ROM 12 and internet 15. Each media ID is encrypted to be recorded on a different position in a ROM 2. Upon reading a music content, the media ID of the corresponding recording media is decoded to decode the music content based upon the media ID and the secret key, and then, the resultant is temporarily stored in a RAM 3. Upon writing a music content, it is encrypted based upon the media ID corresponding to a recording media and the secret key, and the content in the RAM 3 is deleted. This makes cryptanalysis hard to thereby enhance a protection level of a music content in an electronic musical apparatus.

Abstract: In an electronic musical apparatus, a media ID (MD1, MD2, MD3, MD4, MD5) is associated with each recording media of a memory card 8, hard disk device 10, flash memory ROM 11, CD-ROM 12 and internet 15. Each media ID is encrypted to be recorded on a different position in a ROM 2. Upon reading a music content, the media ID of the corresponding recording media is decoded to decode the music content based upon the media ID and the secret key, and then, the resultant is temporarily stored in a RAM 3. Upon writing a music content, it is encrypted based upon the media ID corresponding to a recording media and the secret key, and the content in the RAM 3 is deleted. This makes cryptanalysis hard to thereby enhance a protection level of a music content in an electronic musical apparatus.

Abstract: There is provided an generator, the power generation efficiency of which is further improved by employing a configuration in which a power generation mechanism having a back-electromotive force prevention function is divided into two independent mechanisms, the phases thereof are completely shifted to each other to generate electric power, thereby strengthening the rotational driving force.

Abstract: Provided is an electric motor which is simple to design and manufacture, and can be operated by a small current. The electric motor is comprised of a stator 55 having a first disk 45 and a second disk 50, a first ring core 10 having a first switching winding 15 divided into a winding part and a gap part, a second ring core 12 having a second switching winding 20 divided into a winding part and a gap part, and a first rotor 35 having a third disk 25 and a second rotor 40 having a fourth disk 30 mutually connected by a driving shaft 60. The first and second switching windings 15, 20 include first and second power supplies 125-1, -2, and first and second switches 75-1, -2, respectively.

Abstract: An electronic music apparatus has a sound generator for generating a music sound signal according to music data. A storage medium stores music data files, each written with music data for generating the sound signal. An information retention section retains file information for displaying a name or an icon of the respective music data. A reading command section issues a command of reading a target music data file from the storage medium. A display control section controls a display device to display, when the target music data file is successfully read out, the name and the icon of the music data written in the read target music data file, and when the target music data file is not read, to display the name and the icon of the music data in a state different from the name and the icon displayed when the target music data file is successfully read.

Abstract: There is provided a generator which produces electromotive forces in the same direction on all windings to prevent occurrence of leakage magnetic fields of the windings and lowering of the rotational forces of rotor plates due to the leakage magnetic fields from the windings and offers high efficiency without accompanying any circuit loads.

Abstract: An apparatus is designed for using a music content composed of at least one content material in accordance with security information of the music content. In the apparatus, a reading section reads a recording medium which records a data file of the music content having a chunk structure including a content material chunk and a security information chunk. The content material chunk contains substantial data of the content material and identification information for uniquely identifying the content material. The security information chunk contains security information of the content material and identification information for uniquely identifying the content material. A using section permits use of the content material when the identification information read from the content material chunk coincides with the other identification information read from the security information chunk.

Abstract: In an electronic musical apparatus, a media ID (MD1, MD2, MD3, MD4, MD5) is associated with each recording media of a memory card 8, hard disk device 10, flash memory ROM 11, CD-ROM 12 and internet 15. Each media ID is encrypted to be recorded on a different position in a ROM 2. Upon reading a music content, the media ID of the corresponding recording media is decoded to decode the music content based upon the media ID and the secret key, and then, the resultant is temporarily stored in a RAM 3. Upon writing a music content, it is encrypted based upon the media ID corresponding to a recording media and the secret key, and the content in the RAM 3 is deleted. This makes cryptanalysis hard to thereby enhance a protection level of a music content in an electronic musical apparatus.