Patent application number | Description | Published |
20080291562 | RECORDING METHOD FOR RECORDING DATA ON A RECORDING MEDIUM - 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 which can be performed is restricted. | 11-27-2008 |
20080291791 | RECORDING METHOD FOR RECORDING DATA ON A RECORDING MEDIUM - 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 which can be performed is restricted. | 11-27-2008 |
20080291792 | RECORDING METHOD FOR RECORDING DATA ON A RECORDING MEDIUM - 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 which can be performed is restricted. | 11-27-2008 |
20080297935 | RECORDING METHOD FOR RECORDING DATA ON A RECORDING MEDIUM - 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 which can be performed is restricted. | 12-04-2008 |
20100017679 | RECORDING AND REPRODUCING DATA TO/FROM A RECORDING MEDIUM HAVING A USER DATA AREA AND AN INFORMATION AREA FOR STORING INFORMATION ABOUT THE RECORDING MEDIUM - 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. | 01-21-2010 |
Patent application number | Description | Published |
20080288831 | Method of Recording/Reproducing Digital Data and Apparatus for Same - 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. | 11-20-2008 |
20080288832 | Method of Recording/Reproducing Digital Data and Apparatus for Same - 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. | 11-20-2008 |
20080288833 | Method of Recording/Reproducing Digital Data and Apparatus for Same - 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. | 11-20-2008 |
20080294947 | Method of Recording/Reproducing Digital Data and Apparatus for Same - 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. | 11-27-2008 |
20110271154 | Method of Recording/Reproducing Digital Data and Apparatus for Same - 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. | 11-03-2011 |
Patent application number | Description | Published |
20120026856 | OPTICAL INFORMATION RECORD/REPRODUCTION APPARATUS AND REPRODUCTION APPARATUS - A holographic memory apparatus comprises first phase modulation means that adds phase information to each pixel of a signal beam to generate page data at recording time; oscillator light generation means that generates an oscillator light that is superimposed on, and interferes with, a diffracted light from a holographic recording medium at reproduction time; second phase modulation means that adds phase information to the oscillator light; and light detection means that detects an interference light generated by superimposing the oscillator light and the diffracted light from the holographic recording medium. | 02-02-2012 |
20120230172 | OPTICAL INFORMATION MEDIUM, OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS, AND OPTICAL INFORMATION RECORDING/REPRODUCING METHOD - In the related art, writing of BCA data has been performed by a BCA cutter or the like after a user data area was formed. However, according to such a method, individual steps cannot help being provided for a disc manufacturing step in order to form the BCA. A burden on the disc manufacturer is large from a viewpoint of the number of disc producing steps and, further, manufacturing costs. By using a bit forming method similar to a user data area, the BCA manufacturing steps can be reduced. Specifically speaking, by devising a pit depth, a pit width, and a pit pattern, a modulation degree of a BCA portion can be further increased. A detecting method similar to that for the BCA in the related art can be applied. | 09-13-2012 |
20140003221 | OPTICAL INFORMATION RECORDING AND REPRODUCING METHOD AND DEVICE | 01-02-2014 |
Patent application number | Description | Published |
20140043952 | OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS - An optical information recording/reproducing apparatus, to apply holograms of an angle multiplex recording method therein includes: a light source to emit a light beam; a divider unit to divide the light beam into a signal beam and a reference light; an angle variable unit to change an angle of the reference light incident upon an optical information recording medium; a spatial light modulator unit to add information to the signal beam; an objective lens to irradiate the signal beam on the medium; an image pickup unit to detect a diffracted light generating from a recording region, when the reference light is irradiated on the medium; and an optical element to shape a form of light flux of the reference light, so that a light flux diameter of the reference light in a multiplex direction becomes larger than the light flux diameter of the reference light in a pitch direction. | 02-13-2014 |
20140098654 | DISK-SHAPED RECORDING MEDIUM AND RECORDING/REPRODUCING DEVICE FOR DISK-SHAPED RECORDING MEDIUM - When recording layers were provided on both the front and back sides of an optical disk in order to increase the recording capacity, whether the reproducing surface of the optical disk taken out of the cartridge was the front side or the back side could not be determined. This problem can be solved by adding to the BCA, in addition to disk identification information: type information indicating whether a recording surface is provided on one side or both sides; side information indicating whether the surface with which reproduction is being performed is side A or side B; recording layer quantity information indicating whether the disk has a single layer or a double layer; information indicating the areas other than the BCA and the directions in which data on the read-in, data zones, and read-out are recorded/reproduced; and information indicating the presence/absence of a disk cartridge. | 04-10-2014 |
20140301176 | OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS - An optical information recording/reproducing apparatus for recording information on a recording medium and/or reproducing information from the recording medium, includes: a laser light source for performing recording and/or reproducing information; a shielding part, using a liquid crystal, that can switch between transmission and interception of laser light emitted from the laser light source; a driving circuit for driving the switching between transmission and interception of the shielding part; a moving part for relatively moving the shielding part and the laser light; and a controlling circuit for controlling the moving part. The moving part relatively moves the shielding part and the laser light so as to switch a region to which the laser light is applied from a first region of the shielding part to a second region thereof different from the first region, in order to prevent the liquid crystal from deteriorating. | 10-09-2014 |