Patent application number | Description | Published |
20090016194 | Optical Pickup Device - An optical pickup device includes a first light source emitting first light with a first wavelength, a second light source emitting second light with a second wavelength, a third light source emitting third light with a third wavelength, an objective lens having a step structure, the objective lens being disposed to satisfy predetermined conditions, at least one first coupling lens making the first light and the second light incident onto the objective lens as converged light, a second coupling lens making the third light incident onto the objective lens as diverging light, and a liquid crystal aberration correcting element. | 01-15-2009 |
20090052305 | OPTICAL PICK-UP - There is provided an optical pick-up including first to third light sources respectively emitting first to third light beams, a first coupling lens, and an objective lens formed to converge each of the first, second and third light beams onto the first, second and third optical discs, respectively. The objective lens has a step structure including a plurality of concentrically formed refractive surface zones divided by steps, the step structure having a function of giving, at each step, an optical path length difference of approximately 2λ | 02-26-2009 |
20090052307 | OBJECTIVE OPTICAL SYSTEM AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE HAVING THE SAME - There is provided an objective optical system for an optical information recording/reproducing device. The objective optical system includes an optical element having an annular zone structure on at least one surface. The annular zone structure includes annular zones configured to have at least one step formed, at a boundary between adjacent ones of the annular zones, to extend in a direction of an optical axis. The at least one step is provided to cause a predetermined optical path length difference between a light beam passing through an outside of the boundary and a light beam passing through an inside of the boundary. The predetermined optical path length difference given to a first light beam by the at least one step is approximately equal to an odd multiple of a first wavelength λa. Abbe number of material of the optical element satisfies a condition of 15<νd<35. | 02-26-2009 |
20090080319 | OBJECTIVE OPTICAL SYSTEM AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE HAVING THE SAME - There is provided an objective optical system including an optical element having a phase shift structure, and a single-element objective lens made of resin, wherein the phase shift structure includes a plurality of refractive surface zones, the phase shift structure includes a first area to contribute to converging at least the third light beam on a record surface of the third optical disc, the first area includes at least two types of steps, each of which is formed at a boundary between adjacent ones of the plurality of refractive surface zones, the at least two types of steps gives optical path length differences different from each other to an incident light beam, the annular zone structure satisfies following conditions: | 03-26-2009 |
20090154325 | OBJECTIVE LENS AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE HAVING THE SAME - There is provided an objective lens for information recording/reproducing for three types of optical discs, which includes a first area contributing to converging a third light beam onto a record surface of a third optical disc. The first area includes a phase shift structure having refractive surface zones concentrically formed about a predetermined axis. The phase shift structure includes first and second step groups. The first step group is configured such that an optical path length difference ΔOPD | 06-18-2009 |
20090185472 | Objective Optical System and Optical Information Recording/Reproducing Device Having the Same - There is provided an objective optical system used for information recording/reproducing for three types of optical discs. The objective optical system includes an objective lens, and a diffraction structure formed on an optical surface. The diffraction structure includes a first area for contributing to converging the third light beam. The first area includes first and second steps defined by first and second optical path difference functions, respectively. The first step is configured such that diffraction orders at which diffraction efficiencies for the first, second and third light beams are maximized are 1 | 07-23-2009 |
20110122758 | OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND OBJECTIVE OPTICAL SYSTEM FOR THE SAME - An objective optical system for an optical information recording/reproducing apparatus for recording/reproducing for first, second and third optical discs by selectively using three types of substantially collimated light beams including first, second and third light beams respectively having first, second and third wavelengths, wherein at least one of optical surfaces of the objective optical system comprises a diffraction surface having a diffraction structure, the diffraction surface includes a first region defined by first and second optical path difference functions, a second region defined by at least one type of optical path difference function, and a third region defined by at least one type of optical path difference function, the first region satisfies a condition: | 05-26-2011 |
20110228664 | OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND OBJECTIVE OPTICAL SYSTEM FOR THE SAME - An objective optical system for information recording/reproducing, at least one of optical surfaces of the objective optical system comprising a diffraction surface including a first region contributing to converging first, second and third beams and including a diffraction structure formed such that use diffraction orders for the first, second and third beams are 1st-orders and a condition 0.03<(λB | 09-22-2011 |
20130279018 | ZOOM LENS SYSTEM - A zoom lens system includes a positive first lens group, a negative second lens group, a positive third lens group, a negative fourth lens group, and a positive fifth lens group. Upon zooming from the short to long focal length extremities, the distance between the first and second lens groups increases, and the distance between the second and third lens groups decreases. The following conditions are satisfied: | 10-24-2013 |
20130315047 | OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND OBJECTIVE OPTICAL SYSTEM FOR THE SAME - An objective optical system for information recording/reproducing, at least one of optical surfaces of the objective optical system comprising a diffraction surface including a first region contributing to converging first, second and third beams and including a diffraction structure formed such that use diffraction orders for the first, second and third beams are 1st-orders and a condition 0.03<(λB | 11-28-2013 |
Patent application number | Description | Published |
20100005414 | DISPLAY METHOD AND DISPLAY DEVICE - The composition mentioned hereinafter has been chosen to enable switching over the window targeted for manipulation by manipulating an arrow key, in case a subwindow which can be manipulated with a free cursor is present inside a main window which can be manipulated with a block cursor. In a state in which subwindow is focused during manipulation of main window, there is a switchover, by detection of lapse of a fixed time T, to manipulation of subwindow. In addition, in a state in which the free cursor is present in a border portion of subwindow during manipulation of subwindow, there is a switchover to main window as a result of detection of any one of: manipulation of key in the subwindow outward direction, pressing of key for a fixed time in the subwindow outward direction, and lapse of a fixed time T. | 01-07-2010 |
20100138536 | DOWNLOAD CONTROL DEVICE - When download operations get started in unison in conformity to RSS metafile delivery time-and-date information, the traffic is temporarily concentrated to a server, resulting in the risk of a system failure or else. In addition, it is inevitable to periodically check whether an RSS file on Web server is updated or not; so, users must delete update-unnecessary RSS files from those objects to be monitored. In view of this, the periodical update check timing of download control information is dispersed, thereby scattering download requests to the server. The download control information is provided with the information indicating whether such download control information is put under update management and/or expire time-and-date information in case the update management is to be done, whereby an information processing apparatus performs, based on the information, erase processing of the download control information when the download processing is completed. | 06-03-2010 |
20100275006 | RECEIVER AND RECEIVING METHOD - By deciding procedures for downloading content data and downloading key information, a safe service is provided for a content distributor and a method which can start playback before completion of the downloading of the content data is provided, thereby providing a technique easy for a user. A receiver has: an interface unit being adapted to download encoded content data and key information for decoding the content data from a communication line; a storage unit being adapted to store the downloaded content data and key information from the interface unit; and a control unit which decodes the content data outputted from the storage unit using the key information. The control unit downloads the key information after the content data is downloaded entirely. | 10-28-2010 |
20110158251 | CONTENT DISTRIBUTION METHOD AND CONTENT RECEPTION DEVICE - Both a first method, in which a packet used to transmit distribution content is divided into two or more containers and the divided containers are transmitted at the same time, and a second method, in which the divided containers are transmitted at different times, are executed in a content distribution system. A download terminal selectively executes high-speed downloading by the first method and low-speed downloading by the second method, thus allowing the user to use a download service according to the terminal performance. | 06-30-2011 |
20120110117 | CONTENT RECEIVING APPARATUS - Content receiving apparatus including: a receiving unit which is an export medium having a content recording unit, and an export condition information recording unit; an export condition information acquisition unit having information indicating the number of times of export of content, and configured to acquire export condition information; and an export unit configured to export the content to the export medium in which the receiving unit receives specification, acquire the information on the number of times of export from the export condition information for the content, and in the case where the number of times of export of the acquired export information is two or more times, export the content to the recording medium, and set the export condition information of the content to the export condition information recording unit in the recording medium by using the number of times of export as much as multiple times. | 05-03-2012 |
20120113218 | RECEIVING APPARATUS AND RECEIVING METHOD - It is an object of the present invention to provide a content receiving apparatus capable of receiving, storing, and externally exporting content distributed from various networks. A receiving apparatus for receiving a digital signal in which a 3D video program and a 2D video program are mixedly present, includes a program selection unit configured to display and select a received program list; and a function determination unit configured to determine a function of viewing the 3D video program and 2D video program included in the receiving apparatus, wherein the program selection unit displays a viewable program list of the receiving apparatus according to a determination result of the function determination unit at the time of displaying the received program list. | 05-10-2012 |
20120120204 | RECEIVER - A receiver to receive 2D and 3D content from a content distributor, including a content list obtaining unit obtaining a list screen of content receivable from the content distributor, a content obtaining unit obtaining 2D or 3D content from the content distributor, a display unit displaying the list screen and reproduced screen of the content on an external or built-in monitor, and a function determining unit determining a function for viewing/listening to 3D and 2D content, wherein the content list obtaining unit determines if 3D content is visible/listenable and obtains a content list of only 2D content or both 2D and 3D content, in accordance with a result of determination, from the content distributor, and the display unit displays the content list obtained through the content list obtaining unit, thereby enabling the receiver of content to receive, memorize and/or output outside the content, being distributed from various networks. | 05-17-2012 |
20120219269 | CONTENT RECEIVER APPARATUS - A content receiver comprises: an acceptance unit for accepting a designation of a recording medium to which contents are to be output; a license information acquiring unit for acquiring output license information describing the output requirements of the contents; and an output unit for outputting the contents to the designated recording medium. The output license information includes usage time limit information indicating the time limit of using the contents in an output destination. The output unit acquires the usage time limit information from the output license information for the contents, and sets the acquired usage time limit information to a management information storing area in the designated recording medium, thereby managing the time period of using the contents in the recording medium even if the copyright protection of the recording medium, which is an export destination, has a function to manage the time period of using the contents. | 08-30-2012 |
20120243851 | CONTENT-RECEIVING DEVICE - A content receiver comprises: an acceptance unit for accepting a designation of a recording medium to which contents are to he output; a license information acquiring unit for acquiring output license information describing the output requirements of the contents; and an output unit for outputting the contents to the designated recording medium The output license information includes usage time limit information indicating the time limit of using the contents in an output destination. The output unit acquires the usage time limit information from the output license information for the contents, and sets the acquired usage time limit information to a management information storing area in the designated recording medium, thereby managing the time period of using the contents in the recording medium even if the copyright protection of the recording medium, which is an export destination, has a function to manage the time period of using the contents. | 09-27-2012 |
20130144981 | CONTENT RECEIVING DEVICE, AND CONTENT DISTRIBUTION SYSTEM - A content receiver comprises: an acceptance unit for accepting a designation of a recording medium to which contents are to be output; a license information acquiring unit for acquiring output license information describing the output requirements of the contents; and an output unit for outputting the contents to the designated recording medium. The output license information includes usage time limit information indicating the time limit of using the contents in an output destination. The output unit acquires the usage time limit information from the output license information for the contents, and sets the acquired usage time limit information to a management information storing area in the designated recording medium, thereby managing the time period of using the contents in the recording medium even if the copyright protection of the recording medium, which is an export destination, has a function to manage the time period of using the contents. | 06-06-2013 |
20140255008 | CONTENT-RECEIVING DEVICE - A content receiver comprises: an acceptance unit for accepting a designation of a recording medium to which contents are to be output; a license information acquiring unit for acquiring output license information describing the output requirements of the contents; and an output unit for outputting the contents to the designated recording medium. The output license information includes usage time limit information indicating the time limit of using the contents in an output destination. The output unit acquires the usage time limit information from the output license information for the contents, and sets the acquired usage time limit information to a management information storing area in the designated recording medium, thereby managing the time period of using the contents in the recording medium even if the copyright protection of the recording medium, which is an export destination, has a function to manage the time period of using the contents. | 09-11-2014 |