Abstract: A modulator of a distance measuring sensor unit 102 has a photographing pattern that includes a plurality of patterns different from each other, and modulates intensity of light. A gesture detecting unit divides image data obtained by receiving light transmitted through the modulator by the image sensor; restores an image by calculation based on a developing pattern corresponding to the photographing pattern in a divided unit; and obtains an image for detecting gesture of a user. This makes it possible to obtain an image of an object in an outside world without using a lens for forming an image. Therefore, it is possible to reduce a load on a user when the user wears the apparatus.

Abstract: A user authentication system 100 includes: a main body device 200 including: an authentication code transmission requesting unit that generates an authentication code transmission request including a first value, and transmits the authentication code transmission request to an authentication device 300; a verification unit 272 that decides that authentication is successful if an authentication code transmitted from the authentication device 300 in response to the authentication code transmission request is included in a verification authentication code generated in response to the first value; and an unlocking unit 273 that enables a predetermined functionality if the verification unit 272 decides that the authentication is successful; and an authentication device 300 including an authentication code reply unit that generates the authentication code in response to the first value included in the authentication code transmission request, and transmits the authentication code as a reply to the main body device

Abstract: A content transmission device has a first encryption process means that encrypts, by a digital communication interface, a digital content for transmission to a content reception device and encrypts a low-resolution content by a first encryption process; a second encryption process that encrypts a high-resolution content by a second encryption process; and a down-conversion means that down-converts the high-resolution content to the low-resolution content. The content transmission device receives, from a digital reception device, information related to an encryption process of the digital reception device. Then, if the digital reception device supports the second encryption process, the content transmission device transmits the high-resolution content as encrypted by the second encryption process.

Abstract: A contactless power receiving device includes a power receiving coil receiving power from a contactless power transfer device, a rectifier circuit rectifying the power to form a rectified output on a high potential side and a rectified output on a low potential side, a smoothing circuit receiving the rectified output on the high potential side and the rectified output on the low potential side, and a switching power supply converting a DC voltage from the smoothing circuit to a first voltage. The smoothing circuit includes a first inductor transmitting the rectified output on the high potential side, a second inductor transmitting the rectified output on the low potential side, and a smoothing capacitance element to which the rectified output on the high potential side and the rectified output on the low potential side are supplied, and the rectified output on the low potential side is connected to a ground potential.

Abstract: Provided is an imaging system capable of stereo-photographing with both of visible and infrared images, and improving color reproducibility in visible-light-photographing. The imaging system includes two imaging sensors 1, and two DBPFs 5 that have transmittance characteristics in a visible light band and a second wavelength band, are respectively provided correspondingly to the two imaging sensors, and serve as optical filters. The imaging system has: at least four kinds of filters, which have mutual different spectral transmission characteristics corresponding to wavelengths in the visible light band and whose transmissions in a second wavelength band approximate each other; and two color filters provided so as respectively correspond to the two imaging sensors. The imaging system measures a distance to a target based on two visible or infrared image signals.

Abstract: The present invention improves charging efficiency in a wireless power transfer device. A wireless power transfer device wirelessly transfers power by using inductive coupling to a charging target device placed in the vicinity of a charging pad. The wireless power transfer device includes an amplifier for performing power amplification, a series resonant circuit constituted by a resonant capacitor and a power transfer coil, and a foreign material detection unit for detecting a non-charging device, which is not a charging target, placed in the vicinity of the charging pad. The foreign material detection unit is constituted by a pick-up coil, bandpass filters, detector circuits and a control circuit. The foreign material detection unit detects an IC card which is the non-charging device by a signal component emitted through inductive coupling with the power transfer coil from the device placed in the vicinity of the charging pad when transferring power.

Abstract: A content transmission device has a first encryption process means that encrypts, by a digital communication interface, a digital content for transmission to a content reception device and encrypts a low-resolution content by a first encryption process; a second encryption process that encrypts a high-resolution content by a second encryption process; and a down-conversion means that down-converts the high-resolution content to the low-resolution content. The content transmission device receives, from a digital reception device, information related to an encryption process of the digital reception device. Then, if the digital reception device supports the second encryption process, the content transmission device transmits the high-resolution content as encrypted by the second encryption process.

Abstract: A storage system having a plurality of optical disc devices allows other optical disc devices inside the storage system to reproduce the optical disc recorded by a certain optical disc device but inhibits optical disc devices outside the storage system to reproduce the optical disc. A device key as a base for generating an encryption key is common to the plurality of optical disc devices. In the optical disc devices, a guest key other than the device key can be used temporarily to generate the encryption key. An authentication list containing a reproduction condition is recorded with the key information to the optical disc.

Abstract: There are provided an optical disc device and its recording/reproducing method for managing the management information about plural optical discs efficiently. In the present invention, the management information about the plural optical discs is stored in a memory. Moreover, the management information about part or all of the optical discs stored in the memory is recorded in the optical disc.

Abstract: The present invention relates to a recording/reproducing device that records data on a double-sided recordable optical disk for storage and management purposes. The device includes a unit which stores a plurality of optical disks, a unit which records data onto and reproduces data from an upper side of an optical disk, a unit which records data onto and reproduces data from a lower side of an optical disk, a unit which conveys an optical disk between the disk storage unit and each recording/reproducing unit. When a request for reading data recorded on the lower side of the disk is received while the upper side is being written onto, a control unit interrupts a data recording process on the upper side, reproduces data recorded on the lower side, and after completion of reproducing the recorded data, resumes the interrupted data recording process.

Abstract: A magazine detachably installed in a main body of a disc changer is divided into sections by partitions for storing a large number of optical discs. The magazine is provided with a belt set around rollers, which carries the optical disc in contact with the belt. In the disc changer, the belt is rotated by a gear of the roller, which is engaged with an external drive gear for taking the optical disc through rotating movement. Among the optical discs which have been taken, a target optical disc opposite the slit of the disc control plate passes through the slit, and the other optical discs stop while abutting against the disc control plate. The optical disc which has passed through the slit is inserted into disc carriage rollers, and further carried to the drive for recording/reproducing.

Abstract: A data recording and reproducing apparatus relative to a data library device includes a plurality of setup units for recording and reproducing data in a record and reproduction condition appropriate to a recording medium, and a storage unit for storing identification information and medium information of the recording medium, in this way, a setup processing is performed to reproduce the identification information from the recording medium when loading the recording medium, the medium information corresponding to the identification information is read out from the storage unit to perform the setup processing by a second setup unit when the medium information corresponding to the identification information is present in the storage unit, and the setup processing is performed by a third setup unit to reproduce the medium information from the recording medium and store in the storage unit together with the identification information, shortening a time period of the setup processing.

Abstract: There is provided a method of calculating the degradation over time of the quality of data recorded on an optical disk in a short time. In the method, when user data is recorded on a data area, a test signal including a component in which the signal level is smaller than a reference value, is recorded on a test area. Then, the test signal is reproduced from the test area when a predetermined time has passed, to calculate the quality degradation of the user data from the evaluation result. Alternatively, every time when the user data is recorded/reproduced on/from the data area, the test signal is recorded/reproduced repeatedly on/from the test area. Then, the test signal is reproduced from the test area at a predetermined timing, to calculate the quality degradation of the user data from the evaluation result.

Abstract: A digital data recording/reproducing method includes the steps of: interleaving data on a PI code for each PI code of a 208-row ECC block; and converting a short burst error into random errors by dispersing errors on the PI codes. Moreover, the digital data recording/reproducing method increases correction capability against several bytes to several tens bytes of errors generated at random without changing burst error correction length by performing this processing for respective PI codes by using interleave rules that are different as much as possible from one another.

Abstract: Even when recording data which is continuously inputted at a high speed, it is possible to correct a recording error and reproduce preferable AV data without a noise upon reproduction. A recording error detection circuit (14) detects an error generation upon recording according to the fluctuation of amplitude of a tracking error signal or a focus error signal. A recording signal processing circuit (6) again records (performs skip recording) the same data in a region subsequently adjacent to a region where a recording error has occurred. When performing the skip recording, address information contained in the recording data is rewritten into address information on a new recording region. Moreover, an identifier (skip mark) indicating that a recording error has occurred is added to the pattern of the link region of the recording data.

Abstract: If a large minimum data unit for recorded data is used to record a small data amount of management information, the recording time is long, and furthermore when a WO (write once) is used as the recording medium, the number of recording operations is restricted. To solve the above problems, the present invention records data in a management area in units smaller than ordinary units for recorded data to suitably record information in a limited management area and thereby efficiently use the user data area. At that time, the present invention simplifies interleave processing usually applied to ordinary recorded data, and performs the simplified interleave processing on a data structure (for data of small size) of the present invention so as to ensure the signal processing compatibility between the ordinary data and data having the data structure according to the present invention.

Abstract: An authentication method for use in sending/receiving data between a coded data output apparatus for outputting coded data having a water mark, and a recording apparatus for recording data onto a recording medium, the method including: deciding a type of the recording medium used by the recording apparatus; based on a result of the deciding, selecting, from a plurality of authentication methods, an authentication method corresponding to the type of the recording medium, and conducting authentication between the coded data output apparatus and the recording apparatus, using the authentication method; sending/receiving data between the coded data output apparatus and the recording apparatus after conducting the authentication; and in a case where the coded data has the water mark, detecting the water mark by the coded data output apparatus, wherein the data exchanged between the coded data output apparatus and the recording apparatus is scrambled by a scrambling method corresponding to the type the recording me

Abstract: A data recording and reproducing apparatus relative to a data library device includes a plurality of setup units for recording and reproducing data in a record and reproduction condition appropriate to a recording medium, and a storage unit for storing identification information and medium information of the recording medium, in this way, a setup processing is performed to reproduce the identification information from the recording medium when loading the recording medium, the medium information corresponding to the identification information is read out from the storage unit to perform the setup processing by a second setup unit when the medium information corresponding to the identification information is present in the storage unit, and the setup processing is performed by a third setup unit to reproduce the medium information from the recording medium and store in the storage unit together with the identification information, shortening a time period of the setup processing.

Abstract: The present invention relates to a recording/reproducing device that records data on a double-sided recordable optical disk for storage and management purposes. The device includes a unit which stores a plurality of optical disks, a unit which records data onto and reproduces data from an upper side of an optical disk, a unit which records data onto and reproduces data from a lower side of an optical disk, a unit which conveys an optical disk between the disk storage unit and each recording/reproducing unit. When a request for reading data recorded on the lower side of the disk is received while the upper side is being written onto, a control unit interrupts a data recording process on the upper side, reproduces data recorded on the lower side, and after completion of reproducing the recorded data, resumes the interrupted data recording process.

Abstract: An authentication method for use in sending/receiving data between a coded data output apparatus for outputting coded data having a water mark, and a recording apparatus for recording data onto a recording medium, the method including: deciding a type of the recording medium used by the recording apparatus; based on a result of the deciding, selecting, from a plurality of authentication methods, an authentication method corresponding to the type of the recording medium, and conducting authentication between the coded data output apparatus and the recording apparatus, using the authentication method; sending/receiving data between the coded data output apparatus and the recording apparatus after conducting the authentication; and in a case where the coded data has the water mark, detecting the water mark by the coded data output apparatus, wherein the data exchanged between the coded data output apparatus and the recording apparatus is scrambled by a scrambling method corresponding to the type the recording me