Patent application number | Description | Published |
20080253242 | Information recording medium, recording method of information recording medium, and information recording and reproducing device - A information recording medium includes a data area and a system area. In the data area, a user data is recorded. In the system area, management information for managing a recording status of the data area is recorded. The management information recorded in the system area includes recording mode information which indicates a recording procedure of the user data in the data area. By this construction, an information recording medium, a recording method of an information recording medium and an information recording and reproducing medium which are able to appropriately treat an information recording medium having an availability to a plurality of recording mode when being loaded. | 10-16-2008 |
20080298184 | OPTICAL DISC RECORDING SYSTEM - An optical disc recording system includes a host apparatus configured to issue commands; and an optical disc recording apparatus configured to carry out a process corresponding to each of the commands, and to reply a response data to the command to the host apparatus. The host apparatus issues a record command as one of the commands to record a record data in an optical disc medium, and an optical disc recording apparatus records the record data in a data area in a predetermined format in response to the record command, wherein the optical disc comprises the data area and a first control data recording area. The optical disc recording apparatus additionally sets each of second control data recording areas in the data area in association with a command from the host apparatus as one of the commands, and a record status control data is recorded in the first or second control data recording area to indicate record status of the record data. At least a part of a second control data recording area associated data with at least one of the second control data recording areas is shared by the host apparatus and the optical disc recording apparatus. | 12-04-2008 |
20090059747 | RECORDING CONDITION ADJUSTMENT METHOD FOR INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING/REPRODUCING APPARATUS - [PROBLEMS] To reduce the number of recording condition adjustment steps before information recording, simplify the recording condition adjustment procedure, and perform stable and accurate recoding condition adjustment of an information recording medium. | 03-05-2009 |
20090168615 | PARAMETER ADJUSTING METHOD AND DATA RECORDING/REPRODUCING DEVICE - A high-density land/groove recording method is provided which records random data used for parameter adjustment on either adjacent three grooves or adjacent three lands of an optical disk. The recorded data is reproduced, the radial tilt is first adjusted based on PRSNR of the reproduction data, and thereafter parameters are adjusted one by one in the order of focus offset, recording power and track offset. The recording power may be adjusted first. | 07-02-2009 |
20090268589 | INFORMATION RECORDING UNIT AND RECORDING CONDITION CALIBRATION METHOD - A method for calibrating a recording condition in an information recording unit includes: heating a recorded data pattern recorded on the information recording medium; reproducing the recorded data pattern after the heating, to measure a reproduced-signal quality; and determining a recording condition based on the measured reproduced-signal quality. | 10-29-2009 |
20090274024 | OPTICAL-IRRADIATION-POWER CALIBRATION METHOD AND INFORMATION RECORDING/REPRODUCING UNIT - The optical information recording/reproducing unit distinguishes an unrecorded area of a set optical disc (step A | 11-05-2009 |
20100002554 | OPTICAL DISK DEVICE AND OPTICAL DISK TYPE DETERMINATION METHOD - An optical disk device includes an optical head unit, a drive means and a recording surface state determination means, and determines the type of an optical disk based on a state of the information recording surface. The information recording surface includes a management region on which management information is recorded and formed by a guiding groove or a prepit sequence and a data recording region on which a user data is recorded and on which a track formed by a guiding groove or a prepit sequence. The optical head unit irradiates a focused beam onto the information recording surface of an optical disk which rotates. The drive means drives to move the focused beam along a radial direction of the optical disk by driving the optical head unit. The recording surface state determination means determines a state of the information recording surface based on a reflected light of the focused beam. The optical disk device determines the type of the optical disk based on a state of the information recording surface in a determination region being set to straddle between a management region and the data recording region. | 01-07-2010 |
20100014406 | RECORDING CONDITION ADJUSTING METHOD AND OPTICAL DISC APPARATUS - An optical disc apparatus according to the present invention includes a recording strategy adjusting section having an initial value setting section; an output level setting section; and a pulse width setting section. The initial value setting section sets initial values of pulse widths and output levels of a laser beam as a basic recording strategy. Also, the output level setting section adjusts output levels of the recording strategy with a plurality of first adjustment laser beams that are outputted by changing the output levels of the basic recording strategy. Also, the pulse width setting section adjusts the output levels of the recording strategy with a plurality of second adjustment laser beams that are outputted by fixing the output levels set by the initial value setting section, and changing the pulse widths of the basic recording strategy. | 01-21-2010 |
20100020664 | RECORDING STRATEGY ADJUSTING METHOD AND OPTICAL DISC RECORDING/REPRODUCING DEVICE - A recording strategy for specifying an output waveform of a laser beam to be applied to a recording layer of an information recording medium is adjusted by the following recording strategy adjusting method. The recording strategy adjusting method includes a base strategy determining step of determining a basic recording strategy; a first top pulse width setting step wherein the shortest mark in a pattern row formed on the recording layer of the information recording medium is specified after the base strategy determining step, and the width of a top pulse, i.e., a pulse for recording the shortest mark, is set; and a step of adjusting a power, including a recording power and a bias power, for recording. | 01-28-2010 |
20100039912 | OPTICAL INFORMATION RECORDING/REPRODUCING UNIT AND METHOD OF MEASURING RECORDED-MARK QUALITY - An equalizer ( | 02-18-2010 |
20100157749 | Information Recording/Reproducing Apparatus and Track Offset Adjusting Method of Information Recording Medium - In a track offset adjusting method of an information recording medium, data are recorded onto first and second tracks of an information recording medium. No data are recorded on at least one of tracks adjacent to each of the first and second tracks. After the data recording onto the first and second tracks, data are recorded onto the third track adjacent to the inner circumferential side of the first track and onto a fourth track adjacent to the outer circumferential side of the second track. Thereafter, reproduction signal qualities of the first and second tracks are calculated on the basis of reproduction signals obtained by reproducing the data recorded on said first and second tracks. The track offset is adjusted on the basis of the reproduction signal qualities of the first and second tracks. | 06-24-2010 |
20100315914 | LIGHT IRRADIATION POWER ADJUSTING METHOD AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS - A light irradiation power adjusting method includes a first recording step, a first reproducing step, a first measuring step, a bias power determining step and a recording power determining step. In the first recording step, an adjustment pattern is recorded to an optical information recording medium while fixing a recording power to a predetermined first power value and while changing a bias power among a plurality of second power values within a predetermined range. In the first reproducing step, the recorded adjustment pattern is reproduced so as to generate a reproduction signal. In the first measuring step, asymmetry values corresponding to the plurality of second power values are measured. In the bias power determining step, an optimum bias power value is determined based on the asymmetry values. In the recording power determining step, an optimum recording power value is determined based on the optimum bias power value. | 12-16-2010 |
20110271051 | ARRAY TYPE DISK DEVICE, AND CONTROL METHOD FOR ARRAY TYPE DISK DEVICE - For the purpose of reducing the time for information processing in an array type disk device provided with a plurality of optical disk devices, when a beginning address is notified from any one of the optical disk devices to a main control device of the array type disk device, the main control device determines the beginning address notified first as a writing start address, without waiting for a notification of a beginning address from any other optical disk devices. Then, the main control device notifies the determined writing start address to the respective optical disk devices. Accordingly, even if search times for the writing start address are different among the optical disk devices, all the optical disk devices can start the writing of information based on which optical disk device has most quickly notified the beginning address. | 11-03-2011 |
20130236108 | OBJECT OR SHAPE INFORMATION REPRESENTATION METHOD - An information representation method for representing an object or a shape includes: dividing a contour shape of an entirety or a part of the object or the shape into one or a plurality of curves; and representing the contour shape of the object or the shape by parameters including a degree of curvature and a positional relationship of each curve obtained by the dividing. Therefore, there is provided an information representation method for an object or a shape, which is capable of robust object recognition against a change in image by geometric transformations and occlusions. | 09-12-2013 |
20130238815 | PATH SELECTION DEVICE, PROGRAM AND METHOD - A start node acquires coupled state information indicating a connectibility of nodes from a network. By executing simulation in accordance with a computational model constructed based on the coupled state information, the start node determines for each node a first link that transmitted an oscillation or a signal first to the node. A path that extends from a target node to the start node via the first link of intermediate nodes is selected. | 09-12-2013 |
20140094935 | SYSTEM AND SYSTEM CONTROL METHOD - An object is to provide a system in which components can overall operate in concert with one another by using only functions about the components, without using the theory of probability. The system includes a plurality of function blocks correlated to one another. The plurality of function blocks each include: a storing unit including an evaluation function that is associated with its own function block; a profit maximization control unit for adjusting the operation level of its own function block by information about the evaluation function of another of the plurality of function blocks that has a relation with its own function block; an activation/shutdown problem solution control unit for adjusting a suppression of the operation level by profit maximization control based on an active state/shutdown state of its own function block; and a restraint condition fulfillment control unit for adjusting the operation level of its own function block based on a restraint condition that is to be fulfilled by its own function block and all of the plurality of function blocks together. | 04-03-2014 |
20140249687 | CONTROL METHOD FOR SYSTEM AND SYSTEM - Provided is a system including a plurality of correlated function blocks, for executing load balancing among the function blocks. The plurality of function blocks each include an activation/shutdown control unit to determine whether to activate/shut down its own function block based on information of an evaluation function of its own function block and information of an evaluation function of another function block that has a relation to its own function block, and the activation/shutdown control unit determines whether to activate/shut down its own function block by using an amount relevant to the evaluation function of its own function block in a state where the evaluation function of its own function block takes a desired value, and using a state of the evaluation function of the another function block having a relation to its own function block that is equivalent to, or related to, the relevant amount. | 09-04-2014 |
20140288674 | METHOD FOR CONTROLLING SYSTEM, AND CONTROL DEVICE - Provided is a control device for a system that includes a plurality of correlated function blocks. The control device includes: a setting unit for setting an evaluation function about a function block state in association with each of the plurality of function blocks; a virtual evaluation function creating unit for setting, as a virtual function block, a group of a predetermined function blocks selected from the plurality of function blocks, and creating a virtual evaluation function by using the evaluation functions of the function blocks contained in the virtual function block; and a system control unit for controlling the system based on the virtual evaluation function. | 09-25-2014 |