| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 369124010 | With details of electrical signal processing | 40 |
| 20080219132 | OPTICAL DISK APPARATUS - An optical disk apparatus is provided which can: prevent an SNR deterioration attributable to an increase in read speed; overcome difficulty in separating a read signal and HF signal components; reduce laser noise; and maintain high reliability even during a high-speed read operation. An optical disk is irradiated with laser light pulsed by a high-frequency signal generated by a HF oscillator. The output of an optical detector which receives laser light reflected from the optical disk is converted into an electric pulse read signal using a current amplifier. The pulse read signal is converted into a temporally continuous read signal using a combination of an AD converter and a DA converter. | 09-11-2008 |
| 20080232227 | Method and apparatus for converging voltages of optical recording medium - An apparatus for converging voltages of an optical recording medium may include a first converging unit, a second converging unit, and/or a switching unit. The first converging unit may be configured to converge a voltage level of a first input signal to a reference voltage. The second converging unit may be configured to converge a voltage level of a second input signal to the reference voltage. The switching unit may be configured to determine whether to short-circuit output terminals of the first and second converging units during a period when the voltage levels of the first and second input signals are being converged to the reference voltage. | 09-25-2008 |
| 20090310471 | Resin composition and optical component - There are provided a resin composition that is suitable for an optical component which, while maintaining moldability, low birefringence, heat resistance, mass productivity, mechanical strength, and light transmittance, hardly exhibits a low light transmittance during the use of a blue-violet laser beam source and a deterioration in optical properties, and an optical component produced by molding the resin composition, and a optical pickup device using the optical component. The present invention provides a resin composition comprising 0.05 to 5 parts by weight of the specific hindered amine compound based on 100 parts by weight of the polymer having an alicyclic structure in at least a part of repeating structural unit, an optical component produced by molding the resin composition, and a optical pickup device using the optical component. | 12-17-2009 |
| 20100074091 | INFORMATION REPRODUCING APPARATUS AND METHOD, AND COMPUTER PROGRAM - An information reproducing apparatus ( | 03-25-2010 |
| 20100110867 | DISC PLAYBACK APPARATUS - A disc playback apparatus characterized in, when receiving either a fast-forward playback request or a fast-backward playback request, calculating a target address by setting up a position which is close to a position at which information being read from a memory and being played back is stored in a disc as a movement destination of an optical pickup, and moving the optical pickup to the above-mentioned target address. | 05-06-2010 |
| 20100202273 | LASER DRIVING DEVICE, OPTICAL UNIT, AND LIGHT DEVICE - A laser driving device includes: a first pulse generating section; a second pulse generating section; a light emission waveform generating section; a light emission level pattern storing section; and a second storing section. | 08-12-2010 |
| 20100208572 | OPTICAL DISC DEVICE AND HYBRID OPTICAL DISC - When it is determined that the disc loaded on a player is a hybrid next generation DVD, the DVD layer is reproduced with a red laser light. In parallel with this reproduction process, a process for notifying the presence of the HDDVD layer is performed. That is, determination is made on whether the notification timing defined in advance has been reached. If the notification timing has been reached, a control instruction is output from a controller to an AV processing circuit, and the image information including the image notifying the presence of the HDDVD layer is output from the AV processing circuit. Thus, the user may learn that the HDDVD layer can be reproduced. | 08-19-2010 |
| 20100220579 | INFORMATION RECORDING DEVICE AND INFORMATION RECORDING PROGRAM - It is an object to provide an information recording device capable of recording recording information with good recording property without wasting a recording region on an optical disk and capable of clearly forming visible portion. In a case where the visible portion is formed by using a recording pit supporting recording information Sr, the information recording device comprises an output unit | 09-02-2010 |
| 20100226236 | Data Reproduction Apparatus - When a user requests a reproduction operation via a remote control, a microprocessor determines whether or not data on a medium of the type selected in advance by a user using the remote control can be reproduced. When the microprocessor determines that data on a medium of the selected type can be reproduced, it selectively reproduces data on the medium of the selected type. When the microprocessor determines that data on a medium of the selected type cannot be reproduced, it sequentially determines whether data on media other than media of the selected type among multiple types of media can be reproduced or not, sets the type of a medium on which data can be reproduced, which is found as a result of the determination, as the type of media to be played, and reproduces data on the medium on which data can be reproduced. | 09-09-2010 |
| 20110222390 | Method and Apparatus for Selecting Options Located on a Media Disc - A method and apparatus for selecting options on a media disc containing data. In one embodiment, an option identifier associated with an external surface of the media disc by a sensor unit coupled to a media player is detected, wherein the external surface is an outer surface of the media disc. A presentation option corresponding to the option identifier is identified to form an identified presentation option. Media content associated with the media disc is presented in a format corresponding to the presentation option. | 09-15-2011 |
| 20120063290 | Write-once type information storage medium (disk structure of recording type information storage medium having structure in which recording layer formed on transparent susbstrate is defined as inside), and information reproducing method or information recording method as well as storage medium manufacturing - An embodiment of the invention, to provide a recording method and a storage medium for BCA data with high reliability for a storage medium and a method for reproducing BCA data from the storage medium, and an information recording apparatus and an information reproducing apparatus. In a conventional optical disk, low reliability data is recorded in a data area of BCA. Thus, the thickness of a film material for use in a recording layer oriented to BCA data or close to the inner periphery of the storage medium in the vicinity thereof is formed in uniform thickness by using a substrate of the storage medium, the substrate being formed by being suctioned by means of adsorbing mechanisms formed in an arc shape so as to integrated two of the adsorbing mechanisms to be adjacent to each other. | 03-15-2012 |
| 20130077460 | OPTICAL INFORMATION RECORDING MEDIUM, AND SUBSTRATE AND MANUFACTURING METHOD FOR THE OPTICAL INFORMATION RECORDING MEDIUM - In an optical disk including at least a rewritable phase change material and comprising a recording layer having a reflectivity of more than 15%, an address output value as an address pit signal component occupying in a reproduced signal in a non recording state is prescribed to be 0.18 though 0.27 or a numerical aperture of an address pit signal occupying in a reproduced signal in a non recording state is prescribed to be more than 0.3. | 03-28-2013 |
| 20160125908 | OPTICAL INFORMATION RECORDING MEDIUM, REPRODUCTION METHOD, AND REPRODUCTION DEVICE - In a case where (i) a reflectance calculated from a reflected light amount obtained from a longest pit (P | 05-05-2016 |
| 369124020 | With transducing multiple tracks | 3 |
| 20090067315 | MULTI-CHANNEL OPTICAL RECORDING AND/OR REPRODUCING APPARATUS AND METHOD OF CONTROLLING THE SAME - A multi-channel optical recording and/or reproducing apparatus includes an optical pickup including a plurality of light sources, the optical pickup being adapted to emit a plurality of light beams to a corresponding plurality of tracks of an information storage medium and to detect a plurality of light beams reflected by the corresponding plurality of tracks of the information storage medium; and a control signal generating unit to generate a control signal which equalizes and controls aberrations occurring due to a wavelength difference between the plurality of light sources, a displacement difference on an optical axis between the light sources, or a distance between the light sources, based on detection signals generated according to the plurality of reflected light beams. | 03-12-2009 |
| 20140321255 | DIGITAL OPTICAL TAPE STORAGE SYSTEM - Digital optical tape archival storage systems and methods are disclosed. A digital optical tape recorder may simultaneously write data and two or more guide tracks onto a digital optical tape recording medium. A digital optical taper reader may include a camera to capture a two-dimensional image of the digital optical tape recording medium, and an image processor to extract the data from the two-dimensional image. | 10-30-2014 |
| 20160042755 | DIGITAL OPTICAL TAPE STORAGE SYSTEM - Digital optical tape archival storage systems and methods are disclosed. A digital optical tape recorder may simultaneously write data and two or more guide tracks onto a digital optical tape recording medium. A digital optical taper reader may include a camera comprising an array of detectors to capture a two-dimensional image of the digital optical tape recording medium, and an image processor to extract the data from the two-dimensional image. The camera may capture the two-dimensional image of the digital optical tape recording medium without aligning individual data bits recorded on the digital optical tape recording medium to individual detectors within the camera. | 02-11-2016 |
| 369124030 | With transducing using plural beams | 2 |
| 20110310723 | OPTICAL INFORMATION RECORDING METHOD, OPTICAL INFORMATION REPRODUCING METHOD, OPTICAL INFORMATION RECORDING APPARATUS, AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS - An optical information recording method includes emitting light having a wavelength λ1 from a first light source with a pulse width of time tw1 or more and power P1, emitting light having a wavelength λ2 from a second light source with a pulse width of time tw2, a repetition interval T, and power P2, and performing information recording by simultaneously irradiating an identical part of a recording medium with the light from the first light source and the light from the second light source, in which the wavelength λ1 and the wavelength λ2 satisfy λ1>500 nm>λ2 and λ0 which is expressed as 1/λ1+1/λ2=1/λ0 satisfies a relationship of λ0<300 nm, and emission of the first light source and emission of the second light source satisfy relationships of tw2P1. | 12-22-2011 |
| 20120008487 | OPTICAL RECORDING DEVICE AND RECORDING METHOD - A recording device includes a plurality of channels configured to record data to an optical recording medium, a reception unit configured to receive data transmitted from an external device, a storage unit configured to temporarily store the data that is received by the reception unit, and a distribution control unit configured to read the data that is stored in the storage unit and distribute the data by a block unit to the plurality of channels based on transfer time of the data and recording time to the optical recording medium so that record processing of the plurality of channels are simultaneously ended. | 01-12-2012 |
| 369124040 | Modulating or demodulating | 3 |
| 20090016201 | Optical Device - To provide an optical disc device | 01-15-2009 |
| 20100315937 | HIGH FREQUENCY MODULATOR - A high frequency modulator is described. It comprises: a first converter for receiving a constant current signal and transmitting a first converted signal; an adder coupled the first converter and operative for transmitting a summed signal in response to receiving the first converted signal and selectively receiving a triangular signal; a first oscillator coupled to the adder for receiving the summed signal, the first oscillator operative for transmitting a time varying current signal; a second converter coupled to the first oscillator for receiving the time varying current signal and operative for transmitting a second converted signal; and an output device selectively coupled to the second converter and operative for transmitting an output signal in response to receiving either the second converted signal or an offset signal. | 12-16-2010 |
| 20140185422 | INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION RECORDING APPARATUS - Disclosed is an information recording medium ( | 07-03-2014 |
| 369124060 | Compressing or decompressing | 2 |
| 20110038245 | DATA COMPRESSION/DECOMPRESSION METHOD, DATA DECOMPRESSION METHOD, AND OPTICAL DISC DRIVE UTILIZING THE METHOD - A data compression/decompression method for operation of an optical disc drive is disclosed. The method comprises: obtaining data; and compressing at least one part of the data to generate compressed data, when the part of the data meets a predefined rule. | 02-17-2011 |
| 20130142027 | METHOD OF CONTROLLING AN OPTICAL DISC DRIVE, AND OPTICAL DISC DRIVE AND OPTICAL INFORMATION WRITING AND/OR READING SYSTEM USING THE METHOD - Provided is a method of controlling an optical disc drive, and an optical disc drive using the method. Data that is to be transmitted from a host to the optical disc drive may be encoded. The encoded data may be transmitted to the optical disc drive, and the optical disc drive may decode the encoded data. | 06-06-2013 |
| 369124070 | Auxiliary information arrangement processing (e.g., block headers, subcode, or interpolated information, etc.) | 4 |
| 20080273446 | Recording medium, information recording and reproducing method, and recording and reproducing apparatus - Conventionally, as in the case of switching between a DVD-R and a DVD-RAM, when the method of record mark arrangement in a track is changed, the physical format of the disk is also changed. This makes it difficult to ensure compatibility between pieces of data recorded by a plurality of different methods of record mark arrangement. According to the present invention, sector address data and block address data are recorded in each sector by using wobbling or deformation of a recording groove. Then, depending on which address is used, sector data structure is modified, thereby making it possible to select an address data detection and a data structure on a disk in a single physical format depending on the purpose. | 11-06-2008 |
| 20090034404 | Medical Data Recording Method - A device for recording information on CDRs or other recording media and printing file information for observing what is recorded thereon. The information may be medical images such as x-rays, cat scans, magnetic resonance images, or sonograms. The discs can have patient names and other information selected from information stored thereon, printed on the disc as well as logos for the hospital, service provider or trademarks. The discs can be automatically loaded into the recorder and printer. The fields of information or logos printed on the discs can be changed to suit the user. A database creates and updates a directory of patient files so the discs can be located and the images thereon viewed for each patient. The discs have software allowing the computer to view the images on the disc so that a personal computer not having imaging software can operate the disc. The image information can be downloaded from a remote imaging machine for storage. | 02-05-2009 |
| 20090059772 | Medical Data Recording System - A device for recording information on CDRs or other recording media and printing file information for observing what is recorded thereon. The information may be medical images such as x-rays, cat scans, magnetic resonance images, or sonograms. The discs can have patient names and other information selected from information stored thereon, printed on the disc as well as logos for the hospital, service provider or trademarks. The discs can be automatically loaded into the recorder and printer. The fields of information or logos printed on the discs can be changed to suit the user. A database creates and updates a directory of patient files so the discs can be located and the images thereon viewed for each patient. The discs have software allowing the computer to view the images on the disc so that a personal computer not having imaging software can operate the disc. The image information can be downloaded from a remote imaging machine for storage. | 03-05-2009 |
| 20130215732 | METHOD OF MANUFACTURING MASTER DISC, METHOD OF MANUFACTURING RECORDING MEDIUM, PROGRAM, AND RECORDING MEDIUM - Information unique on a group basis is allowed to be efficiently added to a recording medium in which read-only contents data is recorded. Master data (cutting master) having a data structure in which data to be replaced is managed by a file system as data to be arranged in a specific folder or a specific file is produced by authoring. In manufacturing of a recording medium master disc through premastering and mastering using the master data, replacement data unique to each group is prepared, and the data to be replaced is replaced with the replacement data to perform the mastering (master disc exposure). Then, a stamper is produced from the produced master disc, and recording media is mass-produced by using the stamper. In other words, the replacement data are changed on the group basis to allow the recording media in which the replacement data (such as GP | 08-22-2013 |
| 369124080 | Sectioned information processing (e.g., lengths, frames, or blocks, etc.) | 2 |
| 20100172231 | MULTILAYER OPTICAL INFORMATION MEDIUM AND OPTICAL INFORMATION PROCESSING APPARATUS THEREFOR, PROGRAM PRODUCT AND INFORMATION MEDIUM INCLUDING THE SAME - A disclosed multilayer optical information medium includes three or more information layers. Address information indicating positions in each of the information layers is recorded in a helical manner. The information layers comprise at least one I to O layer in which values representing addresses in the address information increase from an inner perimeter section toward an outer perimeter section, and at least one O to I layer in which the values representing the addresses in the address information increase from the outer perimeter section toward the inner perimeter section. All of the I to O layers have substantially the same address information and all of the O to I layers have substantially the same address information. Layer specifying information specifying the information layer is attached to the address information. | 07-08-2010 |
| 20110122756 | OPTICAL DISC RECORDING METHOD AND OPTICAL DISC RECORDER - To compensate for edge shifts varying largely in accordance with preceding mark lengths. Provided are a method and a recorder in which a duration of a cooling pulse in each recording pulse string to form a mark having a length of nT is determined on the basis of an edge shift amount of a front edge of a mark whose preceding mark has a length of nT, where n is an integer and T is a channel bit length. | 05-26-2011 |
| 369124100 | Gain processing | 5 |
| 20100061218 | Optical Recording Medium and Recording and Reproducing Method Using the Same - It is an object of the present invention to provide an optical recording medium containing a laminated structure of a first deformable material layer containing a phase-change material that absorbs light at a recording wavelength to generate heat and is subject to exothermic melting and deformation and a second deformable material layer containing a material which contains a silicon oxide (SiOx; 0| 03-11-2010 | |
| 20100091637 | METHOD AND APPARATUS FOR PERFORMING A WRITING POWER CALIBRATION - The present invention relates to a method of performing a writing power calibration for optical recording on an optical storage medium having a spiral track structure, comprising the steps of: selecting a first partition ( | 04-15-2010 |
| 20100091638 | Optical information recording medium reproducing apparatus, method for reproducing optical information recording medium, program for reproducing optical information recording medium, and computer readable recording medium - An optical information recording medium reproducing apparatus | 04-15-2010 |
| 20100135147 | HIGH POWER OPTICAL DISC DRIVES - High power optical disc drives are disclosed. The drives are configured to deliver laser energy having a power of at least about 25 mW as measured at DVD 1X write speed upon first contact with the surface of an optical disc. | 06-03-2010 |
| 20140056118 | LIGHT DETECTING ELEMENT, AND OPTICAL PICK-UP DEVICE AND OPTICAL DISC DRIVE INCLUDING THE LIGHT DETECTING ELEMENT - Provided are a light detecting element, and an optical pick-up device and an optical disc drive including the light detecting element. The light detecting element includes a terminal resistance unit that is provided between an amplification unit and an output port to limit an electric current of the output signal. | 02-27-2014 |
| 369124140 | Rate, phase, or transient processing | 6 |
| 20090303860 | Recording Process Status Deciding Apparatus and Recording Process Status Deciding Method - A disk-layer-configuration judging unit ( | 12-10-2009 |
| 20100157780 | OPTICAL DISK DRIVE DEVICE AND METHOD - An optical disk drive device has an RF equalizer configured to generate an equalized RF signal by controlling a frequency characteristic of a delay time of an RF signal read out from an optical disk based on a control input signal, a playback clock extractor configured to extract a playback clock for reproducing data recorded on the optical disk from the equalized RF signal, and an RF rate controller configured to generate the control input signal inputted to the RF equalizer, wherein the control input signal is a signal for correcting waveform distortion of the RF signal by controlling the delay time of the RF signal dependent on a frequency of the playback clock. | 06-24-2010 |
| 20100157781 | Optical Information Reproducing Method - An optical information reproducing method of reproducing multivalued information recorded on a track of an optical information medium having a recording/reproducing region, which has virtual cells arranged thereon at regular spacings, the multivalued information being recorded thereon by changing a length of an information pit in a track direction or an area of the information pit in a cell with the use of a light spot, and the multivalued information being reproduced by detecting the level of a multistage reproduced signal from the information pit. The method includes detecting a cell center value of the central cell among three continuous cells recorded with an M-value (M| 06-24-2010 | |
| 20100165826 | Optical Information Reproducing Method - An optical information reproducing method of reproducing multivalued information recorded on a track of an optical information medium having a recording/reproducing region, which has virtual cells arranged thereon at regular spacings, the multivalued information being recorded thereon by changing a length of an information pit in a track direction or an area of the information pit in a cell with the use of a light spot, and the multivalued information being reproduced by detecting the level of a multistage reproduced signal from the information pit. The method includes sampling reproduced signals in the multivalued information recorded in two continuous cells with an M-value (M| 07-01-2010 | |
| 20100188963 | OPTICAL RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCING METHOD - According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer. | 07-29-2010 |
| 20120044795 | Optical Disc Drive - Bandwidth is secured for a read signal transmission line by matching the characteristic impedance of the read signal transmission line with the output impedance of a photodetector of an optical pick up, while at the same time securing bandwidth for the photodetector. In an optical disc drive according to an embodiment of the present invention, each line forming a differential transmission line is divided into a plurality of lines of the same quantity, the quantity being two or more, at or near a connection point between a flexible line and the optical pick up. | 02-23-2012 |
