Of Sub-code Information Patents (Class 369/47.21)
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Patent number: 9449642Abstract: A record carrier has a servo track indicating an information track intended for recording information blocks. The servo track has a variation of a physical parameter, referred to as wobble. The wobble is modulated for encoding record carrier information, such as addresses. The servo track is subdivided in modulated parts in which the frequency and/or phase of the variation deviates from the wobble frequency, and non-modulated parts. The slope of the wobble is substantially continuous at transitions between the modulated and non-modulated parts by using wobbles starting at the maxima or minima of the wobble in a first part of the modulated parts.Type: GrantFiled: December 30, 2013Date of Patent: September 20, 2016Assignee: Koninklijke Philips N.V.Inventors: Cornelis Marinus Schep, Aalbert Stek, Sebastian Egner, Constant Paul Marie Jozef Baggen
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Patent number: 8989881Abstract: Parametric multichannel information is written onto a normal standard audio compact disc, e.g. in the user subchannels, so that the CD enables normal stereo reproduction with a normal reproduction device, or multichannel reproduction with a supplementary device which is easy to connect and which reads out both the stereo information and the parametric multichannel information from the audio CD actually conforming with the standard, and reconstructs more than two audio channels therefrom.Type: GrantFiled: August 18, 2006Date of Patent: March 24, 2015Assignee: Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Harald Popp, Stefan Geyersberger, Wolfgang Fiesel
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Patent number: 8873931Abstract: A storage medium for storing text-based subtitle data including style information, a reproducing apparatus and methods are provided for reproducing text-based subtitle data including style information separately recorded on the storage medium. The storage medium includes: multimedia image data; and text-based subtitle data for displaying subtitles on an image based on the multimedia image data, wherein the text-based subtitle data includes dialog information indicating subtitle contents to be displayed on the image, style information indicating an output style of the dialog information, and partial style information indicating an output style applied to a portion of the dialog information. Accordingly, subtitles can be provided in a plurality of languages without limited to the number of units of subtitle data. In addition, subtitle data can be easily produced and edited. Likewise, an output style of the subtitle data can be changed in a variety of ways.Type: GrantFiled: August 13, 2008Date of Patent: October 28, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Kil-soo Jung, Sung-wook Park
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Patent number: 8570847Abstract: An information recording processing constitution realizing both readout difficulty and high-precision readout is provided. Superimposition recording of highly secret additional information such as a cryptographic key in a groove signal recorded on a disk, which superimposition recording realizes both readout difficulty and high-precision readout, can be performed. The groove signal to which a phase error corresponding to a bit value is set is recorded at a time of recording of the additional information, and at a time of readout of the additional information, the phase error of the groove signal in a predetermined section is subjected to an integrating process and the direction of the phase error of the groove signal within each section is determined. The recording and reproduction of the additional information for increasing readout difficulty and realizing high-precision readout is realized by such processes.Type: GrantFiled: June 30, 2010Date of Patent: October 29, 2013Assignee: Sony CorporationInventors: Yoshiyuki Kajiwara, Shoei Kobayashi
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Patent number: 8447171Abstract: A storage medium for storing text-based subtitle data including style information, a reproducing apparatus and methods are provided for reproducing text-based subtitle data including style information separately recorded on the storage medium. The storage medium includes: multimedia image data; and text-based subtitle data for displaying subtitles on an image based on the multimedia image data, wherein the text-based subtitle data includes dialog information indicating subtitle contents to be displayed on the image, style information indicating an output style of the dialog information, and partial style information indicating an output style applied to a portion of the dialog information. Accordingly, subtitles can be provided in a plurality of languages without limited to the number of units of subtitle data. In addition, subtitle data can be easily produced and edited. Likewise, an output style of the subtitle data can be changed in a variety of ways.Type: GrantFiled: August 13, 2008Date of Patent: May 21, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Kil-soo Jung, Sung-wook Park
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Patent number: 8391124Abstract: An optical drive according to the present invention can write information on an optical disc, which includes a substrate on which a number of pre-pits (2) have been formed on its tracks (t1 to t8) and a recording film that is supported on the substrate. The optical drive includes an optical pickup, and a writing control section for controlling the optical pickup so that marks (3a, 3b) are recorded on the tracks (t1 to t8) so as to overlap with some of the pre-pits (2) and for making the optical pickup irradiate the recording film with a writing light beam. The recorded marks (3a, 3b) overlap with at least ten of the pre-pits (2).Type: GrantFiled: December 17, 2010Date of Patent: March 5, 2013Assignee: Panasonic CorporationInventors: Hiroshi Kayama, Kazuo Momoo
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Patent number: 8385185Abstract: An apparatus and method for recording and/or reproducing data on a disc are provided using padding information, and a corresponding information storage medium. The recording method includes recording a recording unit block in which invalid data is padded in part of the block and recording padding information indicating that the invalid data is included. According to the method, a disc drive becomes able to distinguish valid data from invalid data in an error correction block such that reliability of reproduction increases and stability of the system is improved.Type: GrantFiled: March 31, 2008Date of Patent: February 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-hee Hwang, Kyung-geun Lee, Yoon-woo Lee
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Patent number: 8358567Abstract: According to the present invention, an information reproduction device and an information reproduction method are provided, which are capable of reproducing data using temporary management information that is identified by a simple way of specification. In the present invention, the control receives temporary management information identifying information, searches for and reproduces the most suitable one of a plurality of temporary management information, and reproduces data using the temporary management information. Thus, it is possible to obtain contents of an overwritten file as of before the file was overwritten.Type: GrantFiled: February 2, 2011Date of Patent: January 22, 2013Assignee: Panasonic CorporationInventors: Yoshikazu Yamamoto, Motoshi Ito
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Patent number: 8351882Abstract: A transmit amplifier stage operable to amplify a transmit signal comprises power amplifiers and switches. The power amplifiers include at least one fractional power amplifier operable to provide fractional power to amplify the transmit signal, where the fractional power is a fraction of the full power. A switch has a plurality of positions, where a position directs the transmit signal to a selected power amplifier.Type: GrantFiled: November 2, 2006Date of Patent: January 8, 2013Assignee: Google Inc.Inventors: Haim Harel, Yair Karmi
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Patent number: 8310907Abstract: A recording medium having a data structure of a control information recorded on the recording medium or to be recorded/reproduced on/from the recording medium, characterized in that the control information is associated with a specific recording velocity and the control information includes write strategy information dependent on a type information indicating whether the control information is associated with CAV mode or CLV mode.Type: GrantFiled: July 6, 2004Date of Patent: November 13, 2012Assignee: LG Electronics Inc.Inventors: Sang Woon Suh, Jin Yong Kim
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Patent number: 8295135Abstract: An optical disc includes a reflective film formed on concave and convex marks after the concave and convex marks are synchronized with the integral multiple of a channel bit length and formed in accordance with modulated main information. Thereafter, continuous or intermittent laser light synchronized with the integral multiple of the channel bit length is irradiated at intervals longer than the longest one of the concave and convex marks in accordance with a spiral track formed in a circumferential direction of the concave and convex marks, whereby an optical characteristic of the reflective film is changed to form a recordable mark and sub-information necessary to reproduce the main information is recorded in a superimposition manner.Type: GrantFiled: February 2, 2012Date of Patent: October 23, 2012Assignee: Panasonic CorporationInventors: Masaru Yamaoka, Mamoru Shoji, Keiji Nishikiori, Makoto Usui, Mitsuro Moriya
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Patent number: 8270285Abstract: An optical disc includes a reflective film formed on concave and convex marks after the concave and convex marks are synchronized with the integral multiple of a channel bit length and formed in accordance with modulated main information. Thereafter, continuous or intermittent laser light synchronized with the integral multiple of the channel bit length is irradiated at intervals longer than the longest one of the concave and convex marks in accordance with a spiral track formed in a circumferential direction of the concave and convex marks, whereby an optical characteristic of the reflective film is changed to form a recordable mark and sub-information necessary to reproduce the main information is recorded in a superimposition manner.Type: GrantFiled: September 13, 2011Date of Patent: September 18, 2012Assignee: Panasonic CorporationInventors: Masaru Yamaoka, Mamoru Shoji, Keiji Nishikiori, Makoto Usui, Mitsuro Moriya
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Patent number: 8254233Abstract: An information recording device, an information reproducing device, and an information recording medium securely protect copyright of main information, and prevent illegal access to the recorded main information. The information recording device includes a medium unique information generating section that generates second sub information by data-converting stamper unique information based on disc identification information that differs for each optical disc after transferring main information and first sub information from a stamper having the main information and the first sub information recorded thereon onto an optical disc, and a medium unique information recording section that records the second sub information on the optical disc having recorded thereon in advance the main information and the first sub information in a form different from the forms of the main information and the first sub information.Type: GrantFiled: December 10, 2009Date of Patent: August 28, 2012Assignee: Panasonic CorporationInventors: Masaru Yamaoka, Yuji Takagi, Makoto Usui
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Patent number: 8245224Abstract: A method of retrieving content data and instructional data from a storage medium includes providing a storage medium having content data and instructional data, the content data having a physical and logical format on the storage medium that is known to the instructional data, wherein the instructional data includes plug-in data and has a physical and logical format on the storage medium that is known to firmware of a storage medium reading device, and further wherein the physical and logical format of the content data on the storage medium is incompatible and unknown to the firmware of the storage medium reading device. The method further includes retrieving, via the firmware, the instructional data from a predefined position on the storage medium and retrieving, via the firmware in cooperation with the instructional data, the content data from the storage medium.Type: GrantFiled: August 26, 2004Date of Patent: August 14, 2012Assignee: Koninklijke Philips Electronics N.V.Inventor: Wilhelmus Franciscus Johannes Fontijn
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Patent number: 8243567Abstract: Provided is an optical disc having main information to be decrypted using sub information recorded thereon by arranging concave or convex recording marks in a spiral track wherein a reflective film is formed on the recording marks. First sub information is recorded and superimposed on the main information by shifting/deforming the recording marks or altering a pattern of the recording marks. Second sub information is recorded and superimposed on the main information by changing a reflectivity of the reflective film. The first and second sub information are recorded in an area from which the first and second sub information are to be read simultaneously. The second sub information is recorded in a manner to be associated with the first sub information. The first and second sub information are associated with each other and are recorded in the same area.Type: GrantFiled: September 7, 2009Date of Patent: August 14, 2012Assignee: Panasonic CorporationInventors: Masaru Yamaoka, Makoto Usui
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Patent number: 8218409Abstract: 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: GrantFiled: March 21, 2008Date of Patent: July 10, 2012Assignee: LG Electronics Inc.Inventor: Sang Woon Suh
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Patent number: 8195036Abstract: A storage medium includes multimedia image data, and text-based subtitle data for displaying subtitles on an image based on the multimedia image data, wherein the text-based subtitle data includes dialog information indicating subtitle contents to be displayed on the image, style information indicating an output style of the dialog information, and partial style information indicating an output style applied to a portion of the dialog information. Accordingly, subtitles can be provided in a plurality of languages without being limited to a particular number of units of subtitle data. In addition, subtitle data can be easily produced and edited. Likewise, an output style of the subtitle data can be changed in a variety of ways. Also, a special style can be applied in order to emphasize a portion of the subtitles.Type: GrantFiled: February 18, 2005Date of Patent: June 5, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Kil-soo Jung, Sung-wook Park
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Patent number: 8040785Abstract: An optical disc includes a reflective film formed on concave and convex marks after the concave and convex marks are synchronized with the integral multiple of a channel bit length and formed in accordance with modulated main information. Thereafter, continuous or intermittent laser light synchronized with the integral multiple of the channel bit length is irradiated at intervals longer than the longest one of the concave and convex marks in accordance with a spiral track formed in a circumferential direction of the concave and convex marks, whereby an optical characteristic of the reflective film is changed to form a recordable mark and sub-information necessary to reproduce the main information is recorded in a superimposition manner.Type: GrantFiled: May 28, 2007Date of Patent: October 18, 2011Assignee: Panasonic CorporationInventors: Masaru Yamaoka, Mamoru Shoji, Keiji Nishikiori, Makoto Usui, Mitsuro Moriya
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Patent number: 8000191Abstract: A method reads text data from a musical disc in a disc drive. The musical disc includes a plurality of blocks each including a plurality of packs. Each pack is given a block number and a sequence number and written to a ring buffer of a disc drive including a first memory and a second memory.Type: GrantFiled: January 11, 2006Date of Patent: August 16, 2011Assignee: Via Technologies, Inc.Inventor: Chun-Lung Liu
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Patent number: 7944795Abstract: A holographic recoding medium is provided, having holographic pages. Each page has reference mark (RM) placement areas at fixed locations for placing RM patterns. The reference marks are used to calibrate data images of data areas each of which is enclosed by at least three RM regions. Hidden information of the medium is stored by an specific encoded pattern based on existence, types and arrangements of the RM marks.Type: GrantFiled: July 25, 2008Date of Patent: May 17, 2011Assignee: Industrial Technology Research InstituteInventors: Chun-Te Wu, Chih-Hao Liu, Po-Chang Chen, Chia-Hang Ho, Chien-Fu Tseng, Feng-Hsiang Lo
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Patent number: 7924672Abstract: In an optical disk, a substrate has main data recorded in the form of a combination of pits and lands on one side thereof, and at least a reflective layer and cover layer are stacked on the substrate to cover the pits and lands on the substrate. To the optical disk, sub data is recorded in the form of marks formed by irradiating writing-power laser light to the reflective layer. The marks are formed so that reading signal level will be raised where the marks are formed while it will be lowered where the marks are formed in a counterfeit disk produced based on an authenticated disk, namely, the reading signal level where the marks are formed is different in polarity between in the authenticated and counterfeit disks. Further, in a player for the optical disk, discrimination is made between the authenticated and counterfeit disks by detecting the sub data recorded in the optical disk and judging whether the value of the detected sub data has been read at a correct polarity.Type: GrantFiled: February 7, 2006Date of Patent: April 12, 2011Assignee: Sony CorporationInventors: Goro Fujita, Takashi Shimouma, Jun Nakano, Shigeki Takagawa, Kimihiro Saito
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Patent number: 7872955Abstract: The present invention provides a method of recording control information in a recordable optical disc including at least one recording layer. In recording control information within a management area of an optical disc including at least one or more recording layers, the present invention includes providing the control information to each of the at least one or more recording layers per recording velocity, recording an information identifying a type of the corresponding control information within the control information, and recording a write strategy (WS) interworking with the type of the control information. In recording a write strategy (WS) within disc information, CLV and CAV are separately recorded, whereby it is able to efficiently cope with the record/playback of the optical disc.Type: GrantFiled: June 2, 2006Date of Patent: January 18, 2011Assignee: LG Electronics Inc.Inventors: Sang Woon Suh, Jin Yong Kim
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Patent number: 7835244Abstract: An ADIP decoder for decoding address in pre-groove (ADIP) of a wobble of an optical disc, has: a band pass filter that filters a wobble signal having a period corresponding to the wobble; a wobble PLL circuit that divides a frequency of a phase-locked clock signal in response to an input of the filtered wobble signal, and outputs a locked wobble signal; a timing generating circuit that generates a sampling timing signal based on the clock signal; an analog to digital converter that converts the filtered wobble signal into a digital signal in synchronization with the sampling timing signal; and an ADIP decoding circuit that counts a clock of the locked wobble signal with a counter, holds an address and one of a minimum amplitude value and a maximum amplitude value of the digital signal for each counter period, the address corresponding to a wobble clock count value where the digital signal has one of the minimum amplitude value and the maximum amplitude value, and that decodes the ADIP based on a distributionType: GrantFiled: January 24, 2008Date of Patent: November 16, 2010Assignee: Kabushiki Kaisha ToshibaInventor: Tomoyuki Maekawa
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Patent number: 7830779Abstract: Because conditions for recording identification data of a medium vary in accordance with the structure of different media, such as a single-layer or a multiple-layer structure, stable data recording has been a difficult task. To solve this problem, an incident side of the laser beam for recording identification data on a single-layer optical disk 5 and a double-layer optical disk 6 is the opposite side of a substrate 1 upon which user data is recorded. From this structure, even in a double-layer optical disk 6, the recording is not affected by the recording layer of a second layer 12b and the like. Therefore, in the double-layer optical disk 6, identification data of the medium can be recorded under the same conditions as the single-layer optical disk 5.Type: GrantFiled: September 23, 2004Date of Patent: November 9, 2010Assignee: Panasonic CorporationInventors: Katsuyuki Takahashi, Kenichi Nishiuchi, Naoyasu Miyagawa, Takashi Nishihara
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Patent number: 7817514Abstract: The present invention provides a method of recording control information in a recordable optical disc including at least one recording layer. In recording control information within a management area of an optical disc including at least one or more recording layers, the present invention includes providing the control information to each of the at least one or more recording layers per recording velocity, recording an information identifying a type of the corresponding control information within the control information, and recording a write strategy (WS) interworking with the type of the control information. In recording a write strategy (WS) within disc information, CLV and CAV are separately recorded, whereby it is able to efficiently cope with the record/playback of the optical disc.Type: GrantFiled: June 2, 2006Date of Patent: October 19, 2010Assignee: LG Electronics, Inc.Inventors: Sang Woon Suh, Jin Yong Kim
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Patent number: 7813238Abstract: This invention provides a method and a system to read and buffer an audio data file from an optical storage medium into a buffer memory. The data file comprises blocks sequentially stored in the medium. Each block comprises a subcode block with encoded subcodes and a corresponding main data block with encoded audio data. The method first designates a starting block where buffering starts and searches for the starting block in the blocks. After the starting block is searched, trigger a main data block decoding procedure to decode the starting block and main data blocks in later blocks. According to the timing when the main data block decoding procedure is triggered, decide the timing to trigger buffering the decoded subcodes to the buffer memory. Therefore, the subcodes and corresponding audio data belonging to the same block before decoding can be buffered into the same buffer unit after decoding.Type: GrantFiled: August 28, 2008Date of Patent: October 12, 2010Assignee: MediaTek, Inc.Inventor: Shao-chueh Hu
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Patent number: 7804748Abstract: An optical medium storage device improves the usable life of re-writable optical storage mediums, such CD-RW, DVD+RW and DVD-RAM disks, by adjusting write parameters to compensate for time between an initial write on the optical storage medium and the current time, with adjusted write parameters fine-tuning signal-to-noise ratios and improving the number of reliable overwrites for the optical storage medium.Type: GrantFiled: October 15, 2007Date of Patent: September 28, 2010Assignee: Dell Products L.P.Inventor: Christiaan Steenbergen
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Patent number: 7768892Abstract: The recording apparatus (300A) of the present invention includes a drive apparatus (320). The drive apparatus (320) includes a head section (334) for performing a recording operation or a reproduction operation for an information recording medium (100) and a drive control section (331) for controlling the head section (334). The drive control section (331) receives an update instruction including a third address indicating at least a part of the locations of the information recording medium (100) at which the first address information is recorded and the second address information.Type: GrantFiled: March 23, 2005Date of Patent: August 3, 2010Assignee: Panasonic CorporationInventors: Tadashi Nakamura, Yoshiho Gotoh
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Patent number: 7755983Abstract: An optical disc reproducing apparatus comprising: a buffer memory configured to store data read from sectors of an optical disc when information is reproduced; a controlling unit configured to cause the buffer memory to store first data read from a first sector and second data read from a second sector other than the first sector when the first sector of the sectors is designated; and an output unit configured to output the first data stored in the buffer memory to a processing circuit configured to reproduce the information when the first sector of the sectors is designated, and thereafter output the second data stored in the buffer memory to the processing circuit when the second sector of the sectors is designated.Type: GrantFiled: September 19, 2007Date of Patent: July 13, 2010Assignees: Sanyo Electric Co., Ltd., Sanyo Semiconductor Co., Ltd.Inventor: Takashi Okazaki
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Patent number: 7746746Abstract: An optical medium has auxiliary information and control data encoded in wobble. The control data specifies action that a drive is permitted or required to take with the auxiliary information. For example, the control data may be used to specify whether a drive reading the medium is permitted to output a region of the auxiliary information. Alternatively, the control data may be used to specify whether a writing drive is permitted to copy a portion of the auxiliary information to a writeable area on the medium.Type: GrantFiled: November 16, 2004Date of Patent: June 29, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventor: Charles R. Weirauch
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Patent number: 7701825Abstract: A digital recording medium such as an optical disc is recorded using an encoding process this is modified to cause a peak or rapid change in the digital sum value in the encoded data for part of the recording data. This provides the corresponding part of the recorded medium with a modified DC characteristic that affects an operational characteristic of the recording medium. This modified DC characteristic will not be present in unauthorized copies of the recording medium because the normal encoding process will encode the recording data so as to minimize DC imbalance. Profile data is obtained from operational data acquired during operation of the recording medium. This profile data is compared with expected profile data that is the profile data that would be expected to be obtained if the modified DC characteristic is present. The results of this comparison are used to determine whether or not the recording medium is authentic.Type: GrantFiled: June 17, 2005Date of Patent: April 20, 2010Assignee: Macrovision CorporationInventor: Philippe Marcel Henri Selve
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Publication number: 20100014398Abstract: The present invention provides a method of recording identification information in an optical disc, by which specified disc identification information can be uniformly applicable to efficiently cope with the recording/reproducing of the optical disc. The present invention includes the step of recording disc identification information in a management area of the optical disc wherein the disc identification information identifies a disc type identified according to a disc thickness.Type: ApplicationFiled: July 1, 2009Publication date: January 21, 2010Inventor: Jin Yong Kim
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Patent number: 7573791Abstract: The present invention provides a method of recording identification information in an optical disc, by which specified disc identification information can be uniformly applicable to efficiently cope with the recording/reproducing of the optical disc. The present invention includes the step of recording disc identification information in a management area of the optical disc wherein the disc identification information identifies a disc type identified according to a disc thickness.Type: GrantFiled: August 16, 2004Date of Patent: August 11, 2009Assignee: LG Electronics Inc.Inventor: Jin Yong Kim
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Patent number: 7542391Abstract: In one embodiment the method includes reading speed information from a specific area of the recording medium. The speed information includes one or more speed flags to indicate whether a corresponding speed is applicable to the recording medium. A first speed flag for a first recording speed lower than a second recording speed is set to be dependent on a second speed flag for the second recording speed. Data is recorded on a main data area of the optical recording medium based on the read speed information.Type: GrantFiled: March 7, 2007Date of Patent: June 2, 2009Assignee: LG Electronics Inc.Inventors: Jin Yong Kim, Sang Woon Suh
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Patent number: 7539098Abstract: A recordable optical information recording medium having an address t for each sector, comprises: an area A1 starting from an address t1 to which access is made only when a recording apparatus performs recording operation; an area A2 starting from an address t2 to which access is made either when the recording apparatus performs the recording operation or when the recording apparatus performs reproducing operation; and an area A3 starting from an address t3 to which access is made either when either the recording apparatus or a reproducing apparatus performs recording or when either the recording apparatus or the reproducing apparatus performs reproducing. The addresses t are set consecutively with respect to a physical arrangement of the sectors in each of the areas A2 and A3, and the area A1 has at least one inconsecutive part at which the addresses t are not consecutive with respect to the physical arrangement of the sectors.Type: GrantFiled: May 9, 2006Date of Patent: May 26, 2009Assignee: Ricoh Company, Ltd.Inventors: Masaki Katoh, Yuki Nakamura, Katsuyuki Yamada
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Patent number: 7522492Abstract: An ADIP (address in pre-groove) signal detection circuit is capable of correctly and quickly detecting discontinuous points in a wobble signal, and has a simple configuration in a wobble detection system of an optical disc device such as a DVD+R/RW, and an ADIP signal detection method thereof. The ADIP signal detection circuit performing the ADIP signal detection method includes one or two window comparators, two edge detection circuits each consisting of an exclusive OR circuit and an AND circuit, and two discontinuous point determination circuits each consisting of a flip-flop and a counter. Therefore, the ADIP signal detection circuit has a simple configuration so that it can be easily implemented. Also, since the ADIP signal detection circuit has a fast operation speed, the ADIP signal detection circuit detects discontinuous points correctly and quickly.Type: GrantFiled: August 9, 2007Date of Patent: April 21, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Soo-yong Kim, Young-hoon Lee, Seok-min Yun
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Patent number: 7502296Abstract: As an information recording medium, an optical disc such as a DVD-R and the like, is applicable. The optical disc has a recording structure which includes a lead-in area, a lead-out area and a user data area. The lead-in area includes control information area having control information data, such as an address of recording data. Moreover, the control information area includes a predetermined remaining quantity area. Until recorded control information data does not reach the predetermined remaining quantity area, when the data is recorded on the optical disc, the newest control information data is additionally recorded in the control information area every time the optical disc is ejected. On the other hand, after the control information data reaches the predetermined remaining quantity area, the newest control information data is additionally recorded in the control information area only when additional recording data larger than a predetermined quantity is recorded.Type: GrantFiled: September 3, 2004Date of Patent: March 10, 2009Assignee: Pioneer CorporationInventors: Masayoshi Yoshida, Takeshi Koda, Keiji Katata
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Patent number: 7468936Abstract: One embodiment includes providing control information, wherein the control information includes one or more recording speed flags indicating respectively whether one or more recording speeds are applicable to each of the recording layers. The control information also includes write strategy information depending on each of the applicable recording speeds, and the control information is recorded on a specific area of the recording medium.Type: GrantFiled: March 7, 2007Date of Patent: December 23, 2008Assignee: LG Electronics Co., Ltd.Inventors: Jin Yong Kim, Sang Woon Suh
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Patent number: 7443773Abstract: An information storage medium having a lead-in area, a user data area, and a lead-out area, wherein information regarding whether additional information is recorded as wobbling pits is recorded in at least a portion of at least one of the lead-in and the lead-out areas.Type: GrantFiled: June 25, 2004Date of Patent: October 28, 2008Assignee: Samsung Electronics Co., Ltd.Inventor: Kyung-geun Lee
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Patent number: 7433280Abstract: This invention provides a method and a system to read and buffer an audio data file from an optical storage medium into a buffer memory. The data file comprises blocks sequentially stored in the medium. Each block comprises a subcode block with encoded subcodes and a corresponding main data block with encoded audio data. The method first designates a starting block where buffering starts and searches for the starting block in the blocks. After the starting block is searched, trigger a main data block decoding procedure to decode the starting block and main data blocks in later blocks. According to the timing when the main data block decoding procedure is triggered, decide the timing to trigger buffering the decoded subcodes to the buffer memory. Therefore, the subcodes and corresponding audio data belonging to the same block before decoding can be buffered into the same buffer unit after decoding.Type: GrantFiled: July 14, 2003Date of Patent: October 7, 2008Assignee: MediaTek, Inc.Inventor: Shao-chueh Hu
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Patent number: 7411889Abstract: Address information is formed by M wobbles (integer M is the number of wobble waves) per bit as a basic unit, and is NRZ-recorded. Also, a sync signal used in sync detection of the address information is formed by N wobbles per bit as a basic unit (integer N is the number of wobble waves and M=2N). The sync signal with such configuration (6 wobbles per bit) is recorded on the head side of the address information (12 wobbles per bit). In this way, even when external noise is large, a modulated wobble signal can be demodulated more accurately.Type: GrantFiled: March 22, 2007Date of Patent: August 12, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Yuji Nagai, Chosaku Noda, Akihito Ogawa, Kazuto Kuroda
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Patent number: 7411878Abstract: A method of reproducing an audio file includes: applying a reproducing mode established based on an attribute information; obtaining at least a part of the audio file under the established reproducing mode; and determining whether the audio file is reproducible under the established reproducing mode by checking whether the part of the audio file constructs a specific format stream corresponding to the applied reproducing mode.Type: GrantFiled: November 21, 2006Date of Patent: August 12, 2008Assignee: LG Electronics, Inc.Inventors: Yong Hee Han, Jong In Shin, Myung Gu Lee, Han Sang Lee
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Patent number: 7382699Abstract: An extracting circuit for extracting meta information from information forming contents is provided. The meta information extracted by the extracting circuit is recorded in a recording medium together with the contents and is used as management information. With this configuration, an object can be searched for based on the contents of the object in a recording device for recording contents, such as moving and still pictures, voices, graphics, and text, in a recording medium.Type: GrantFiled: November 10, 2004Date of Patent: June 3, 2008Assignee: Sony CorporationInventors: Miki Abe, Tadao Yoshida
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Patent number: 7366076Abstract: A signal can be detected based on a level slice system and detection delay time can be reduced by setting the recording density of a header field in a linear direction lower (coarse) than that of a user data recording field. Further, a signal can be detected based on the level slice system and detection delay time can be reduced by using a mark position form having a large detection margin as an information recording system of the header field. A readout error of a sector number due to a detection error is compensated for by recording address marks AM for attaining byte synchronization of the header field in both of a head portion and tail portion of information recorded in the header field.Type: GrantFiled: November 20, 2006Date of Patent: April 29, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Yutaka Okamoto, Hideo Ando, Chosaku Noda, Yutaka Kashihara
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Patent number: 7345969Abstract: An information storage medium includes an area in which updated disc-related information and recording-related information updated with a change in at least one of a disc version number and a recording speed is recorded along with existing disc-related information and recording-related information. The existing disc-related information and recording-related information are recorded, and the updated disc-related information and recording-related information is recorded in an area in which the existing disc-related information and recording-related information is recorded. Accordingly, data can be recorded/reproduced on/from a new version of information storage medium even using an existing drive.Type: GrantFiled: December 8, 2005Date of Patent: March 18, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-geun Lee, In-sik Park, Du-seop Yoon
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Patent number: 7345970Abstract: A method of recording writing speed information and per writing speed write strategy information within disc control information is provided. The standardized disc control information can be uniformly applied to efficiently cope with the record/playback of the optical disc. In configuring disc control information within a management area of an optical disc including at least one recording layer, the method includes steps of providing the at least one disc control information within the management area, the disc control information provided per applicable writing speed to each of the at least one recording layer; and recording applicable recording speed information within the disc control information.Type: GrantFiled: July 7, 2004Date of Patent: March 18, 2008Assignee: LG Electronics Inc.Inventors: Jin Yong Kim, Sang Woon Suh
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Patent number: 7301865Abstract: An optical medium storage device improves the usable life of re-writable optical storage mediums, such CD-RW, DVD+RW and DVD-RAM disks, by adjusting write parameters to compensate for time between an initial write on the optical storage medium and the current time, with adjusted write parameters fine-tuning signal-to-noise ratios and improving the number of reliable overwrites for the optical storage medium.Type: GrantFiled: August 28, 2006Date of Patent: November 27, 2007Assignee: Dell Products L.P.Inventor: Christiaan Steenbergen
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Patent number: 7283454Abstract: An information storage medium (a disc) includes an area and a user data area. The area includes a recordable zone having a drive & disc zone in which information on a drive and information on a state of the disc are recorded. The drive & disc zone includes a plurality of physical clusters or ECC blocks and the information on the drive and the information on the state of the disc are recorded in the same physical cluster or ECC block or different physical clusters or ECC blocks.Type: GrantFiled: July 31, 2003Date of Patent: October 16, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-hee Hwang, Kyung-geun Lee, Jung-wan Ko, In-sik Park, Du-seop Yoon
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Patent number: 7272087Abstract: An ADIP (address in pre-groove) signal detection circuit is capable of correctly and quickly detecting discontinuous points in a wobble signal, and has a simple configuration in a wobble detection system of an optical disc device such as a DVD+R/RW, and an ADIP signal detection method thereof. The ADIP signal detection circuit performing the ADIP signal detection method includes one or two window comparators, two edge detection circuits each consisting of an exclusive OR circuit and an AND circuit, and two discontinuous point determination circuits each consisting of a flip-flop and a counter. Therefore, the ADIP signal detection circuit has a simple configuration so that it can be easily implemented. Also, since the ADIP signal detection circuit has a fast operation speed, the ADIP signal detection circuit detects discontinuous points correctly and quickly.Type: GrantFiled: April 27, 2004Date of Patent: September 18, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Soo-yong Kim, Young-hoon Lee, Seok-min Yun
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Patent number: 7272096Abstract: A signal can be detected based on a level slice system and detection delay time can be reduced by setting the recording density of a header field in a linear direction lower (coarse) than that of a user data recording field. Further, a signal can be detected based on the level slice system and detection delay time can be reduced by using a mark position form having a large detection margin as an information recording system of the header field. A readout error of a sector number due to a detection error is compensated for by recording address marks AM for attaining byte synchronization of the header field in both of a head portion and tail portion of information recorded in the header field.Type: GrantFiled: November 21, 2006Date of Patent: September 18, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Yutaka Okamoto, Hideo Ando, Chosaku Noda, Yutaka Kashihara