Patent application number | Description | Published |
20120106310 | OPTICAL HEAD DEVICE AND OPTICAL DISC DEVICE - An optical head device mounted in an optical disc device. The optical head device is provided with a diffractive optical element and a photodetector. The diffractive optical element has: a primary diffraction region at a location on which the positive and negative first-order components and some of the zero-order component of a reflectively diffracted light beam are incident; and secondary diffraction regions at locations on which the rest of the zero-order component but none of the positive or negative first-order components of the reflectively diffracted light beam are incident. A main light-receiving section of the photodetector receives the zero-order component of a transmissively diffracted light beam that has passed through the primary diffraction region and the secondary diffraction regions. Secondary light-receiving sections receive the positive first-order component and/or the negative first-order component of the transmissively diffracted light beam that has passed through the secondary diffraction regions. | 05-03-2012 |
20130114385 | OPTICAL INFORMATION RECORDING MEDIUM AND DRIVE DEVICE - An optical information recording medium includes at least one recording layer, a protective layer that transmits a focused laser beam, and a super-resolution functional layer that changes an optical characteristic in a local region smaller than the diffraction limit determined by the optical performance of the focusing optical system and the wavelength of the laser beam during at least the period of irradiation by the focused laser beam. The maximum thickness (K) between the light incidence surface of the protective layer and the recording layer is 0.083 mm. | 05-09-2013 |
20130286808 | OPTICAL DISC DEVICE, OPTICAL DISC AND TESTING METHOD OF OPTICAL DISC - An optical disc device uses an optical disc ( | 10-31-2013 |
20140043950 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND OPTICAL DISC APPARATUS - Provided is a signal processing device including: an adaptive filter; a PRML circuit for sequentially generating binarized data from a filtered reproduced waveform by sampling at sampling points in a period based on a clock signal and sequentially generating a partial response waveform which is to be the target waveform from the binarized data; a calculating unit for sequentially calculating first phase errors from a difference between the target waveform and the filtered reproduced waveform; a limiting unit for outputting second phase errors by excluding a specific phase error from the first phase errors; and a clock generating unit for generating the clock signal of a frequency corresponding to the second phase errors; wherein the specific phase error includes a phase error at a time when the partial response waveform reaches a specific level which excludes at least a level not less than a predetermined amplitude level. | 02-13-2014 |
20140321251 | OPTICAL HEAD DEVICE AND OPTICAL DISC DEVICE - An optical head device ( | 10-30-2014 |
Patent application number | Description | Published |
20080227399 | Mobile device system and mobile device - Situations such as mobile devices being left in the activated mode are avoided by efficiently reporting the statuses of a plurality of mobile devices. | 09-18-2008 |
20080235593 | Mobile device system and mobile device - When one mobile device is activated, the existence of information which other mobile devices hold is also confirmed. There is provided a mobile device system including a plurality of mobile devices, wherein each mobile device includes a communication unit for communicating with other mobile devices, an information storage unit for storing information, a list storage unit for storing a list of information stored in the information storage unit and in the information storage units of the other mobile devices, a display unit, and a control unit. The control unit displays the list stored in the information storage unit on the display unit and, when information stored in the information storage unit of another mobile device is specified, requests transmission of information from the other mobile device using the communication unit and displays information transmitted in response to the request on the display unit. | 09-25-2008 |
20090115879 | Information management method and digital camera - An information management method and digital camera which can reduce the burden on a user in terms of information management, while ensuring security, are provided. The invention provides a digital camera including an image-acquisition unit for acquiring image information; an ID reading unit for reading identification information of a wireless IC tag built into personal belongings that an image-acquiring person carries; a recording unit for associating and recording the read identification information and image information; a display unit for displaying the image information; and a control unit. At the time of a display request for the image information, the control unit displays the image information on the display unit when the identification information read by the ID reading unit matches the identification information associated with the image information which is the subject of the display request. | 05-07-2009 |
20090117848 | Mobile device system and mobile device - Even when the mobile devices which one carries change from day to day, the invention can flexibly handle such changes to prevent misplacement and the like of a mobile device. Each mobile device includes a communication unit for communicating with other mobile devices, a GPS receiver for acquiring current location information of the mobile device, a group registration unit, an announcing unit, and a control unit. In each mobile device, other mobile devices located within a predetermined range of that mobile device are registered as a group in the group registration unit, and after this registration, the other mobile devices located within the predetermined range of the mobile device are periodically detected, and when the combination of detected other mobile devices does not match the combination of other mobile devices registered in the group registration unit, the announcing unit is operated. | 05-07-2009 |