Having Location Identification Information Patents (Class 369/47.22)
  • Patent number: 10182203
    Abstract: The present invention pertains to an optical disc player with a standard digital port, such as a USB port, coupled to an external storage, such as a thumb drive, coupled to a standard digital port such as a USB port. The external storage may also be used to provide content, commands or applications that enable the player to present certain additional content, or to perform certain additional or enhanced functions.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: January 15, 2019
    Assignee: Warner Bros. Entertainment Inc.
    Inventors: Lewis S. Ostrover, Bradley T. Collar
  • Patent number: 9672850
    Abstract: Systems, methods, devices, circuits for data processing, and more particularly to systems and methods for reporting a synchronization indication and for applying a synchronization window. As an example, a system is discussed that includes: a head assembly including a first read head and a second read head; a down track distance calculation circuit operable to calculate a down track distance between the first read head and the second read head; and a synchronization mark detection circuit. The synchronization mark detection circuit is operable to: assert a synchronization mark window based at a location based at least in part on the down track distance; query a first data set derived from the first read head for a synchronization mark occurring within the synchronization mark window; and query a second data set derived from the second read head for the synchronization mark occurring within the synchronization mark window.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: June 6, 2017
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: Jeffrey P. Grundvig, Richard Rauschmayer, Scott M. Dziak
  • Patent number: 9425745
    Abstract: A buffer circuit may include an amplification reference voltage generation unit and an amplification unit. The amplification reference voltage generation unit may generate an amplification reference voltage. The amplification reference voltage generation unit configured to change a level of the amplification reference voltage based on a level of an output signal. The amplification unit may generate the output signal by differentially amplifying an input signal and the amplification reference voltage.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: August 23, 2016
    Assignee: SK hynix Inc.
    Inventors: Dong Heon Lee, Jin Ha Hwang
  • Patent number: 8737811
    Abstract: A playback device that secures coexistence of a built-in GUI for a built-in machine created uniquely by the manufacturer and a stereoscopic image created by the contents provider. A subtitle decoder displays a subtitle in a predetermined layout by decoding a subtitle stream. A GUI processing unit draws the built-in GUI. The layout of the subtitle to be displayed is one of: normal layout in which areas for subtitle display are provided both in upper and lower parts of a screen; top arrangement layout in which an area for displaying subtitle is provided only in the upper part of the screen; and bottom arrangement layout in which the area for displaying the subtitle is provided only in the lower part. When the top or bottom arrangement layout is selected as the layout of the subtitle, the GUI processing unit selects the layout of the subtitle as the layout of the built-in GUI.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: May 27, 2014
    Assignee: Panasonic Corporation
    Inventor: Tatsuya Takeuchi
  • Patent number: 8644122
    Abstract: A header region evaluation circuit includes a difference signal detection unit that detects a difference signal proportional to a difference in amounts of received light from an optical disc, a high pass filter that switches a plurality of cutoff frequencies according to a passband control signal, removes a low frequency component from the difference signal, and generates a difference signal HPF output, a waveform shaping unit that generates a shaping signal to convert the difference signal HPF output into a pulse, and a physical header detection sequencer that generates a groove detection signal for evaluating whether the physical header region is either one of a groove and an inter-groove and generates a passband control signal for controlling the cutoff frequency to be reduced for a difference signal corresponding to at least a part of the physical header region.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 4, 2014
    Assignee: Renesas Electronics Corporation
    Inventor: Kinji Kayanuma
  • Patent number: 8593930
    Abstract: 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 first light reflecting layer is smaller than the thickness of the second light reflecting layer.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: November 26, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Takazawa, Seiji Morita, Kazuyo Umezawa, Naoki Morishita, Yasuaki Ootera, Hideo Ando, Naomasa Nakamura
  • Patent number: 8565055
    Abstract: In step S1, the address generator generates address information composed of a sync signal which is recorded on an optical disc, address data and an error correction code for the address data, pre-encodes and supplies it to a modulator. At the same time, a carrier signal generator generates a carrier signal which is to carry the address information, and supplies it to the modulator. In step S2, the modulator makes MSK modulation of the carrier signal supplied from the carrier signal generator on the basis of the pre-encoded address information supplied from the address generator, and supplies a resultant MSK modulation signal to a wobbling unit. In step S3, the wobbling unit forms, on the optical disc, a spiral groove wobbled adaptively to the MSK modulation signal supplied from the modulator. In this optical disc, a given address can be accessed quickly and accurately.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: October 22, 2013
    Assignee: Sony Corporation
    Inventors: Shoei Kobayashi, Nobuyoshi Kobayashi, Tamotsu Yamagami, Shinichiro Iimura
  • Patent number: 8509043
    Abstract: A write-once disc includes: a plurality of update areas in which a predetermined kind of updated information is recorded; at least one main access information area in which main access information is recorded, the main access information indicating a final update area in which finally updated information is recorded among the plurality of update areas; and at least one sub access information area in which sub access information is recorded, the sub access information indicating a location of the finally updated information recorded in the final update area. Accordingly, an access time for reading a predetermined kind of information required to use the write-once disc can be reduced.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: August 13, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-hee Hwang, Jung-wan Ko
  • Patent number: 8437241
    Abstract: A method of recording, and an apparatus for recording, data on a write-once disc, and the write-once disc used with the method and the apparatus. The write-once disc includes a plurality of update areas in which to record a predetermined type of updated information, at least one main access information area (AIA) in which to record main access information (AI), the main AI indicating a final update area in which finally updated information is recorded, among the plurality of update areas, and at least one sub AIA in which to record sub AI, the sub AI indicating a location of the finally updated information recorded in the final update area.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: May 7, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-hee Hwang, Jung-wan Ko
  • Patent number: 8379499
    Abstract: A recording and reproducing area and a reproduction-only area are formed by wobbling a groove formed in a spiral fashion to form a track to be tracked on a disk. The recording and reproducing area has address information recorded by wobbling of the groove and information recorded and reproduced by phase change marks on the track formed by the groove where the address information is recorded. The reproduction-only area has prerecorded information recorded by wobbling of the groove.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: February 19, 2013
    Assignee: Sony Corporation
    Inventor: Shoei Kobayashi
  • Patent number: 8363523
    Abstract: Example embodiments provide various techniques for playing data from an optical media drive. The optical media drive may detect certain media access information for use in accessing optical media. This media access information is stored a non-volatile memory. The optical media drive then retrieves the media access information from the non-volatile memory once the optical media drive is reactivated after deactivation. The optical media drive may then read from the optical media using the provided media access information.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: January 29, 2013
    Assignee: Apple Inc.
    Inventor: Paul J. Wehrenberg
  • Patent number: 8345525
    Abstract: A recording and reproducing area and a reproduction-only area are formed by wobbling a groove formed in a spiral fashion to form a track to be tracked on a disk. The recording and reproducing area has address information recorded by wobbling of the groove and information recorded and reproduced by phase change marks on the track formed by the groove where the address information is recorded. The reproduction-only area has prerecorded information recorded by wobbling of the groove.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: January 1, 2013
    Assignee: Sony Corporation
    Inventor: Shoei Kobayashi
  • Patent number: 8320225
    Abstract: A ROM disk having a block data format provided with linking areas as with a rewritable disk. Main data recorded in a main data area and linking data recorded in a linking area in each block are scrambled by identical scrambling data. The scrambling data is generated by a random sequence using address information of the block as an initial value.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: November 27, 2012
    Assignee: Sony Corporation
    Inventor: Shoei Kobayashi
  • Patent number: 8300505
    Abstract: Method and apparatus for writing repeating patterns of features to a substrate, such as a data storage medium. In accordance with some embodiments, a multi-dimensional pattern of discrete features of different sizes to be written to a substrate is divided into a plurality of contiguous regions. A unique set of compensation values is assigned to each region. A write beam of a write system is used to write the features to the substrate responsive to said unique sets of compensation values so that all of the features having a common size in at least one region are written using the same compensation values from the associated set.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: October 30, 2012
    Assignee: Doug Carson & Associates, Inc.
    Inventor: Douglas M. Carson
  • Patent number: 8289820
    Abstract: Recording capacity per layer is detected from a disc and bit allocation of wobble addresses in a conventional optical disc and bit allocation in a high-density optical disc are controlled selectively to detect physical position addresses on the disc. Address detection can be performed for two kinds of discs which are equal in structure of addresses embedded in wobbles but different in bit allocation of addresses.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: October 16, 2012
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Masakazu Ikeda, Akio Fukushima, Koichi Hirose
  • Patent number: 8270267
    Abstract: In step S1, the address generator generates address information composed of a sync signal which is recorded on an optical disc, address data and an error correction code for the address data, pre-encodes and supplies it to a modulator. At the same time, a carrier signal generator generates a carrier signal which is to carry the address information, and supplies it to the modulator. In step S2, the modulator makes MSK modulation of the carrier signal supplied from the carrier signal generator on the basis of the pre-encoded address information supplied from the address generator, and supplies a resultant MSK modulation signal to a wobbling unit. In step S3, the wobbling unit forms, on the optical disc, a spiral groove wobbled adaptively to the MSK modulation signal supplied from the modulator. In this optical disc, a given address can be accessed quickly and accurately.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: September 18, 2012
    Assignee: Sony Corporation
    Inventors: Shoei Kobayashi, Nobuyoshi Kobayashi, Tamotsu Yamagami, Shinichiro Iimura
  • Patent number: 8264929
    Abstract: An optical medium associated with a first type of optical drive laser, such as a blue laser, embeds identification information readable by a second type of optical drive laser, such as a red laser associated with DVD media or an IR laser associated with CD media, in order to reduce the time used by the optical drive to recognize media. An attempt to read the embedded identification information by the second laser that succeeds provides the optical drive with the information to proceed with use of the optical medium using the first laser. An attempt to read the embedded identification information that fails provides the optical drive with the opportunity to detect whether the optical medium is associated with the second laser so that a single spindle kick of the optical medium by the optical drive determines whether the optical medium is associated with either of two types of lasers.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: September 11, 2012
    Assignee: Dell Products L.P.
    Inventors: Dirk Erickson, Ed Beeman, Thomas L. Pratt, Christiaan Steenbergen, Charles Robert Weirauch
  • Patent number: 8254226
    Abstract: There is provided an optical disc having preformed thereon a spiral wobbled track as a grove and/or land along with data is to be recorded. The track is wobbled for a series of predetermined signal units each composed of an FSK information bit part based on a waveform resulted from FSK modulation of information bit and a singe-frequency part based on a waveform of a single frequency. The FSK modulation uses two different frequencies of which the one is the same as the single frequency and the other is different from the single frequency. These different frequencies are in such a relation that each of them has an even number of wobbles and an odd number of wobbles alternately in a predetermined cycle.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: August 28, 2012
    Assignee: Sony Corporation
    Inventors: Shinichiro Iimura, Shoei Kobayashi
  • Patent number: 8233361
    Abstract: A write-once recording medium is provided, which comprises a management information area for recording management information for managing a recorded state, and a user data area for recording user data. The user data area is configured to contain at least one recording area. At least one session is configured to contain at least one of the at least one recording area. The management information contains range information indicating a recording range of the at least one recording area and identification information for identifying the recording area located at a boundary of the session.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: July 31, 2012
    Assignee: Panasonic Corporation
    Inventors: Motoshi Ito, Hiroshi Ueda
  • Patent number: 8218409
    Abstract: According to an embodiment, the invention is directed to an optical disc having signal tracks including a groove track, in which wobble signals are recorded on at least the groove track. Wobble units of wobble signals are modulated on the groove track, while at least 4 wobble units are used to represent a data bit of “0” or “1” in address information. Data bit of “0” or “1” in address information has a same phase and different phase with regard to alternate data bit at least to distinguish from each other.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: July 10, 2012
    Assignee: LG Electronics Inc.
    Inventor: Sang Woon Suh
  • Patent number: 8194513
    Abstract: An optical data recording medium, in which irradiation of a light beam is used for recording and/or reproducing data includes (i) a substrate having an a rise and/or a recess which are a light-incident surface, (ii) a reflective layer, provided on the light-incident surface of the substrate, for reflecting the light beam, (iii) a light absorption layer for converting, to heat, a light of the light beam to heat on the surface of the reflective layer, (iv) a reproducing layer, provided on the surface of the heat-light converting layer, having a transmittance that changes in accordance with a light intensity distribution of the light beam. The optical data recording medium is excellent in super-resolution property, and enables reproduction of a shorter mark length.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: June 5, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideharu Tajima, Nobuyuki Takamori, Go Mori, Masaki Yamamoto
  • Patent number: 8159906
    Abstract: Recording capacity per layer is detected from a disc and bit allocation of wobble addresses in a conventional optical disc and bit allocation in a high-density optical disc are controlled selectively to detect physical position addresses on the disc. Address detection can be performed for two kinds of discs which are equal in structure of addresses embedded in wobbles but different in bit allocation of addresses.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: April 17, 2012
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Masakazu Ikeda, Akio Fukushima, Koichi Hirose
  • Patent number: 8159915
    Abstract: A write-once disc includes: a plurality of update areas in which a predetermined kind of updated information is recorded; at least one main access information area in which main access information is recorded, the main access information indicating a final update area in which finally updated information is recorded among the plurality of update areas; and at least one sub access information area in which sub access information is recorded, the sub access information indicating a location of the finally updated information recorded in the final update area. Accordingly, an access time for reading a predetermined kind of information required to use the write-once disc can be reduced.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: April 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-hee Hwang, Jung-wan Ko
  • Patent number: 8154964
    Abstract: A data processing device and a data processing method, a program and a program recording medium, a data recording medium, and a data structure, all enable data multiplexed into multiplexed data to be specified according to metadata irrespective of the number of pieces of data. A Clip( ) being metadata about a program stream into which a plurality of elementary streams are multiplexed includes as many stream_id/private_stream_id sets as the number of elementary streams number_of_streams. The stream_id/private_stream_id sets each consist of a stream_id, defined for each attribute of data in the MPEG-2 System (ISO/IEC 13818-1), for identifying data, and a private_stream_id for identifying data whose attribute is not defined in the MPEG-2 System. And each of the elementary streams multiplexed into the program stream is specified on the basis of the stream_id and the private_stream_id included in the Clip( ). Embodiments are applicable to, e.g., game machines using a DVD.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: April 10, 2012
    Assignee: Sony Corporation
    Inventors: Yasushi Fujinami, Toshiya Hamada
  • Patent number: 8149671
    Abstract: An optical disc drive according to the present invention can read and/or write data from/on an optical disc with information layers including first and second information layers (L0 and L1). The drive includes: an objective lens for converging a light beam; a lens actuator for driving the lens; a photodetector section that receives the beam reflected from the disc and converts it into an electrical signal; and a control section for determining the values of a first group of parameters, which are set to read data from the first layer (L0), and those of a second group of parameters, which are set to read data from the second layer (L1), during a disc loading process.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: April 3, 2012
    Assignee: Panasonic Corporation
    Inventors: Takahiro Sato, Takeshi Shimamoto, Katsuya Watanabe
  • Patent number: 8149664
    Abstract: A method and apparatus for recording data on a write-once recording medium are disclosed. In the write-once recording medium, the method includes, when a defect area is detected in the recording medium, deciding a replacement recording method for replacing the defect area, when the detected defect area is replacement recorded in a spare area, recording a position information of the defect area and a position information of the spare area in a temporary management area as a defect management information, and when the detected defect area is skipped and the data is replacement recorded in a next consecutive area, an information indicating that the skipped area is the defect area is recorded in a temporary management area as a defect management information. Thus, the write-once recording medium may be managed with more efficiency and data may be efficiently recorded on the recording medium.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: April 3, 2012
    Assignee: LG Electronics Inc.
    Inventor: Sung Wan Park
  • Patent number: 8149669
    Abstract: An optical disk apparatus for enabling to insert a multi-layered optical disk therein, which has plural numbers of recording layers, comprising: a spindle motor 42; an optical pickup 2; and a system controller 100 for controlling the optical pickup to move into a radial direction of the optical disk, as well as, for controlling the optical pickup so that a light-beam irradiated therefrom is focused upon either one of the plural numbers of recording layers of the optical disk, wherein when it is determined that the target layer to be accessed lies on a layer different from that, upon which the optical pickup focuses the light-beam at present, the light-beam irradiated from the optical pickup is shifted to the target layer, after being moved into a radial direction of said optical disk on the layer, upon which the light-beam irradiated therefrom is focused at present, up to an information recording area where the information of the target layer is recoded.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: April 3, 2012
    Assignee: Hitachi-LG Data Storage, Inc.
    Inventor: Shigeru Murotani
  • Patent number: 8121005
    Abstract: A write-once disc includes: a plurality of update areas in which a predetermined kind of updated information is recorded; at least one main access information area in which main access information is recorded, the main access information indicating a final update area in which finally updated information is recorded among the plurality of update areas; and at least one sub access information area in which sub access information is recorded, the sub access information indicating a location of the finally updated information recorded in the final update area. Accordingly, an access time for reading a predetermined kind of information required to use the write-once disc can be reduced.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: February 21, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-hee Hwang, Jung-wan Ko
  • Patent number: 8098566
    Abstract: A bit pattern for a run-in area which allows data reproduction to be performed stably even when the recording density of an optical disc is increased is provided. An optical disc according to the present invention includes tracks, each of which divided into a plurality of recording blocks. Each of the plurality of blocks includes a run-in area and a data area. In the run-in area, a prescribed run-in bit pattern is recordable; and in the data area, bit patterns having a plurality of bit lengths obtained by modulating data as a recording target in accordance with a prescribed modulation rule are recordable. In this optical disc, at least one of spatial frequencies corresponding to the bit patterns having the plurality of bit lengths is higher than a cutoff frequency. The run-in bit pattern recordable in the run-in area includes the bit patterns having the plurality of bit lengths, from which the bit pattern corresponding to the frequency higher than the OTF cutoff frequency has been excluded.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: January 17, 2012
    Assignee: Panasonic Corporation
    Inventors: Kohei Nakata, Harumitsu Miyashita
  • Patent number: 8098553
    Abstract: A write-once disc includes: a plurality of update areas in which a predetermined kind of updated information is recorded; at least one main access information area in which main access information is recorded, the main access information indicating a final update area in which finally updated information is recorded among the plurality of update areas; and at least one sub access information area in which sub access information is recorded, the sub access information indicating a location of the finally updated information recorded in the final update area. Accordingly, an access time for reading a predetermined kind of information required to use the write-once disc can be reduced.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: January 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-hee Hwang, Jung-wan Ko
  • Patent number: 8064301
    Abstract: A recording and reproducing area and a reproduction-only area are formed by wobbling a groove formed in a spiral fashion to form a track to be tracked on a disk. The recording and reproducing area has address information recorded by wobbling of the groove and information recorded and reproduced by phase change marks on the track formed by the groove where the address information is recorded. The reproduction-only area has prerecorded information recorded by wobbling of the groove.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: November 22, 2011
    Assignee: Sony Corporation
    Inventor: Shoei Kobayashi
  • Patent number: 8054718
    Abstract: A write-once optical recording medium and a method and apparatus for recording management information on the recording medium, are provided. The recording medium includes at least one recording layer and SRR information on the recording layer. The SRR information pertains to at least one SRR and includes a header, an SRR entry list, and a terminator. The SRR entry list includes a plurality of SRR entries, each of the SRR entries pertaining to an SRR and including at least one status area for storing therein session start information.
    Type: Grant
    Filed: January 2, 2009
    Date of Patent: November 8, 2011
    Assignee: LG Electronics Inc.
    Inventor: Yong Cheol Park
  • Patent number: 8050156
    Abstract: A write-once recording medium is provided, which comprises a management information area for recording management information for managing a recorded state, and a user data area for recording user data. The user data area is configured to contain at least one recording area. At least one session is configured to contain at least one of the at least one recording area. The management information contains range information indicating a recording range of the at least one recording area and identification information for identifying the recording area located at a boundary of the session.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: November 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Motoshi Ito, Hiroshi Ueda
  • Patent number: 8036071
    Abstract: An optical disk and a method for identifying the optical disk making it possible to identify a recording system of the optical disk easily in a short time by a recording and reproduction apparatus when a groove-recording system and a land-recording system are both employed in one kind of optical disk, such as, for example, a BD-R. Specifically, a polarity upon reproducing wobble information is made to be the same in both an optical disk of groove-recording system and the optical disk of a land-recording system. The recording system of the optical disk that shows the same wobble polarity irrespective of the recording system can be easily detected by finding a tracking polarity that can recognize the wobble information by changing the tracking polarity, whereby the start-up time of the recording and reproduction apparatus can be shortened.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: October 11, 2011
    Assignee: Panasonic Corporation
    Inventors: Shinya Abe, Takashi Ishida
  • Patent number: 8027233
    Abstract: An LPP detection unit detects an LPP from a wobble signal. A correction unit obtains a difference set by performing processing of calculating a difference in signal level between an LPP-present sync pattern portion and a non-LPP sync pattern portion having the same polarity, and executes correction on an RF signal at a timing when the LPP is detected, by using the difference set. The LPP-present sync pattern portion is a sync pattern portion obtained when the LPP is detected at the timing of the sync pattern portion positioned at the head of a sync frame of the RF signal. The non-LPP sync pattern portion is a sync pattern portion obtained when no LPP is detected at the timing of the sync pattern portion of the sync frame. In the case of reproducing information recorded on a DVD-R/RW optical disk, the occurrence of errors due to the effect of the LPP can be reduced.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: September 27, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Tetsuo Ashizawa, Hiromi Honma
  • Patent number: 8014241
    Abstract: An information recording method, including detecting a synchronous signal and first address information from a recording medium, on which the synchronous signal and the first address information have been preformatted in a wobbled groove track, which is divided into a first unit with a predetermined length on the wobbled groove track. The method further includes constructing the track into second units, the second unit having a length different from the first unit with the predetermined length, and generating second address information indicating the constructed second units.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: September 6, 2011
    Assignee: LG Electronics, Inc.
    Inventor: Dae Young Kim
  • Patent number: 8000192
    Abstract: There is provided an optical disc having preformed thereon a spiral wobbled track as a grove and/or land along with data is to be recorded. The track is wobbled for a series of predetermined signal units each composed of an FSK information bit part based on a waveform resulted from FSK modulation of information bit and a singe-frequency part based on a waveform of a single frequency. The FSK modulation uses two different frequencies of which the one is the same as the single frequency and the other is different from the single frequency. These different frequencies are in such a relation that each of them has an even number of wobbles and an odd number of wobbles alternately in a predetermined cycle.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: August 16, 2011
    Assignee: Sony Corporation
    Inventors: Shinichiro Iimura, Shoei Kobayashi
  • Patent number: 7974163
    Abstract: This optical disk device includes a read means which reads data from an optical disk upon which data is recorded at a variable bit rate for each sector. Moreover, this optical disk device includes a buffer memory which sequentially stores data which has been read by the read means, and a replay means which sequentially reads out and decodes data stored in the buffer memory, and replays that data. Furthermore, this optical disk device includes a control means which, when a command for special replay is issued, calculates the address of the sector currently being decoded by the replay means based upon the address of the sector currently being read by the read means, and upon the amount of data stored in the buffer memory. And the control means commands the read means to read out, from the optical disk, a sector to be jumped to.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: July 5, 2011
    Assignee: Funai Electric Co., Ltd.
    Inventor: Satoshi Kamohara
  • Patent number: 7965604
    Abstract: In step S1, the address generator generates address information composed of a sync signal which is recorded on an optical disc, address data and an error correction code for the address data, pre-encodes and supplies it to a modulator. At the same time, a carrier signal generator generates a carrier signal which is to carry the address information, and supplies it to the modulator. In step S2, the modulator makes MSK modulation of the carrier signal supplied from the carrier signal generator on the basis of the pre-encoded address information supplied from the address generator, and supplies a resultant MSK modulation signal to a wobbling unit. In step S3, the wobbling unit forms, on the optical disc, a spiral groove wobbled adaptively to the MSK modulation signal supplied from the modulator. In this optical disc, a given address can be accessed quickly and accurately.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: June 21, 2011
    Assignee: Sony Corporation
    Inventors: Shoei Kobayashi, Nobuyoshi Kobayashi, Tamotsu Yamagami, Shinichiro Iimura
  • Patent number: 7961577
    Abstract: Disclosed is a system for generating an output signal indicating a specific area on an optical disc. The system includes an optical pick-up head signal generator, a detecting apparatus, and an output signal generating apparatus. The optical pick-up head signal generator is used for generating an optical pick-up head signal. The detecting apparatus is used for detecting pre-recorded address information on the optical disc to generate a detection signal. Also, a output signal generating apparatus, which is coupled to the optical pick-up head signal generator and the detecting apparatus, is used for receiving the optical pick-up head signal and the detection signal to generate the output signal according to at least one of the optical pick-up head signal and the detection signal, the output signal generating apparatus not generating the output signal according to the optical pick-up head signal after a predetermined time.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: June 14, 2011
    Assignee: MediaTek Inc.
    Inventors: Meng-Hsueh Lin, Shu-Hung Chou, Shu-Ching Chen
  • Patent number: 7948843
    Abstract: Disclosed is an information recording medium (100) comprising a first recording layer (L0 layer) which is provided with a first recording track for recording record information, and a second recording layer (L1 layer) which is provided with a second recording track for recording record information. Each recording zone (zone #n) including one recording area in the first recording layer and another recording area in the second recording layer which is opposite to the recording area in the first recording layer has a management information recording area (RMA) for recording management information (RMD) for recording the record information.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: May 24, 2011
    Assignee: Pioneer Corporation
    Inventors: Masayoshi Yoshida, Toshiro Tanikawa, Tsuyoshi Hasebe, Shinji Suzuki, Tsuyoshi Namiki, Takeshi Koda, Keiji Katata
  • Patent number: 7944797
    Abstract: A recording method which optically records two-dimensional data including a positioning mark and data area in a recording medium. In this method, the state of the positioning mark is changed from a first state to at least one second state different from the first state every given number of recording times of such two-dimensional data.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: May 17, 2011
    Assignee: Pioneer Corporation
    Inventor: Masakazu Ogasawara
  • Patent number: 7944805
    Abstract: A method of recording, and an apparatus to record, data on a write-once disc, and the write-once disc used with the method and apparatus. The write-once disc includes a plurality of update areas in which to record a predetermined type of updated information, at least one main access information area (AIA) in which to record main access information (AI), the main AI indicating a final update area in which finally updated information is recorded, among the plurality of update areas, and at least one sub AIA in which to record sub AI, the sub AI indicating a location of the finally updated information recorded in the final update area.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: May 17, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-hee Hwang, Jung-wan Ko
  • Patent number: 7936650
    Abstract: An attenuation-amount adjusting circuit includes: a light irradiating unit that alternately irradiates a laser beam of a writing level and a laser beam of a readout level on an optical disk that has a groove formed by a wobble pattern and plural markers indicating physical positions in the groove; a light receiving unit that receives reflected light of the laser beam irradiated on the optical disk and converts the reflected light into a reproduction signal; and a writing-waveform attenuating unit that attenuates an amplitude level of a writing waveform corresponding to the reflected light of the laser beam of the writing level in the reproduction signal according to a position from a rising edge of the writing waveform.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: May 3, 2011
    Assignee: Sony Corporation
    Inventor: Naoto Takeda
  • Patent number: 7933170
    Abstract: An optical disk medium includes a track groove thereon. On the optical disk medium, information is recorded along the track groove on a block unit basis. The block unit has a predetermined length. The block unit having the predetermined length includes a number of sub-blocks that are arranged along the groove. A sub-block mark is provided within each of the sub-blocks and used to identify the sub-block.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: April 26, 2011
    Assignee: Panasonic Corporation
    Inventors: Hiromichi Ishibashi, Shigeru Furumiya, Atsushi Nakamura, Junichi Minamino, Takashi Ishida
  • Patent number: 7929391
    Abstract: A write-once optical recording medium, a method for allocating a defect management area of the write-once optical recording medium, and a method for allocating a spare area of the write-once optical recording medium are provided. A method of managing defects on a write-once optical recording medium having at least one recording layer includes the steps of allocating at least one temporary defect management area having a fixed size and at least one temporary defect management area having a variable size to said optical recording medium, respectively, recording defect management information on the at least one temporary defect management area having a fixed size and the at least one temporary defect management area having a variable size; and using the at least one temporary defect management area having a fixed size and the at least one temporary defect management area having a variable size is provided herein.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: April 19, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7924693
    Abstract: An optical disk physical has a recording region divided into zones, each zone including physical tracks adjacent to each other. An integer number of sectors are provided in each physical track. The angular recording density is higher in the more outward zones such that the linear recording density is substantially constant throughout the recording region, and logical tracks are formed of a predetermined number of sectors, independent of the physical tracks. The conversion between the logical track and sector addresses read from the disk and the linear logical addresses supplied from a host device is easy. The addresses written in headers of the sectors in the logical track in which data are actually recorded, including substitute sectors used in place of defect sectors, are preferably consecutive to further facilitate the conversion between the logical track and sector addresses read from the disk and the linear logical addresses supplied from the host device.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: April 12, 2011
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kyosuke Yoshimoto, Mahesh C. Rao, Hiroyuki Ohata, Kazuhiko Nakane, Teruo Furukawa, Junichi Kondo, Masafumi Ototake
  • Patent number: 7920451
    Abstract: A recording apparatus to record data on a recording medium including a plurality of recording layers is provided. The recording apparatus includes a recording circuit adapted to record data on a recording layer selected from among the plurality of recording layers included on the recording medium; a recordable capacity detecting circuit adapted to detect recordable capacity of each of the plurality of recording layers; an instructing circuit adapted to provide instructions to start recording of the data; and a selecting circuit adapted to select a recording layer on which the data is to be recorded in accordance with the instructions to start recording provided from the instructing circuit based on the recordable capacity of the plurality of recording layers detected by the recordable capacity detecting circuit.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: April 5, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koichi Nakagawa
  • Patent number: RE42535
    Abstract: An optical disc drive for recording and playing back a recordable-type optical disc includes a driving mechanism for rotating the optical disc, an optical pick-up for writing and reading data to and from the optical disc, signal processor for processing signals read out from the optical disc by means of the optical pick-up, a CPU for controlling the driving mechanism, the optical pick-up and the signal processor. The optical disc drive is further equipped with a detecting device for detecting an ATIP error and a counter for counting the number of ATIP errors. The optical disc drive counts the number of ATIP errors caused in a predetermined time based on the synchronization signal (SUBCODE-SYNC) produced by a clock provided in the optical disc drive after the synchronization signal (SUBCODE-SYNC) has been synchronized with a synchronization signal (ATIP-SYNC) obtained from a reference optical disc.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: July 12, 2011
    Assignee: Mitsumi Electric Co, Ltd
    Inventor: Junichi Andoh
  • Patent number: RE44678
    Abstract: An information system according to the invention comprises a record carrier and a playback apparatus. The record carrier has information marks along a track thereof and exhibits first variations caused by existence and nonexistence of the information marks along the track. The first variations represent an information signal recorded on said record carrier. The record carrier further exhibits second variations caused by variations associated with the information marks. The phase of the second variations is coupled to the phase of the first variations.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: December 31, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Job Cornelis Oostveen, Willem Marie Julia Marcel Coene, Jan Harm Boer, Franciscus Lucas Antonius Johannes Kamperman, Aloysius Michael Josephus Maria Spruijt, Paulus Reinier Joannes Van Roosmalen