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| Number | Title | Issue Date |
| 7706229 | Recording medium having different areas recorded with different modulation methods, recording apparatus, reproducing apparatus, recording method, and reproducing method The present invention allows the compatibility with general-purpose data recording/reproducing by use of conventional media systems, and at the same time, allows the construction of a recording/reproducing system which satisfies the demands for the increase in stora... | 04/27/2010 |
| 7433288 | Recording device and method, recording medium and program High bit-rate data and low bit-rate data for the same material are recorded in time division. Meanwhile, the recorded low bit-rate data is read out so as to be used for verification or time-shift playback. In a time-shift playback process, a plurality of tags, each ... | 10/07/2008 |
| 7411881 | Information recording apparatus, method and system, with increased likelihood for recording information at appropriate recording conditions An information recording apparatus records information on an information recording medium by focusing a light beam emitted from a light source on the information recording medium. The apparatus has an information reading device of a type of the information recording... | 08/12/2008 |
| 7372796 | Apparatus for controlling monitor photo diode in optical pickup system An apparatus for controlling a monitor photo diode (PD) of an optical pickup system monitors an optical power signal output for writing data on or reading data from a disk. The apparatus includes a comparator which compares a voltage signal corresponding to the opti... | 05/13/2008 |
| 7359303 | Multi-dimensional coding for high-density storage media applications An asynchronous transfer mode digital document delivery system is provided. A customer premise unit is configured to permit a customer to order and receive a data stream. A buffer is coupled to the customer premise unit to store the data stream before transmitting t... | 04/15/2008 |
| 7327659 | Method and apparatus for recording data on writable compact disc A method of recording data on a compact disc is provided includes modulating the data of 1 byte to p-channel bits, recording the modulated data when a minimum mark length is greater than 0.5 μm and smaller than 1.0 μm, p/q is greater than 4.5 and smaller than 8 wh... | 02/05/2008 |
| 7327843 | Data reproducing device, hard disk, and data storing disk A hard disk A has is constructed to include: a disk 10 in which copy protection information is written in advance in a surface shape such as slits or corrugations in a pre-recording region 13 over a substrate 11 other than a data storage region ... | 02/05/2008 |
| 7313077 | Optical disk device and emission current adjusting method for the same A ratio of an erase current and a peak current when starting recording is defined as K=iER/iPK (S1), and iER11 is set equal to K×iPK1, and an ideal value iER11 of an erase current that should be increased according to a temperature change is de... | 12/25/2007 |
| 7310292 | Optical disk reproducing device that demodulates digital data by switching between a channel bit frequency and a frequency that is half of the channel bit frequency A data demodulation process rate is varied according to a reproduction state, thereby reducing power consumption while maintaining a reading performance in a favorable state. A channel rate process data demodulation device performs a data demodulation process by emp... | 12/18/2007 |
| 7293225 | Method and arrangement for decoding using a trellis A method and arrangement for performing Viterbi decoding by means of a trellis is provided. According to one embodiment, the arrangement comprises one or more ACS units. Connections between the inputs and outputs of the ACS units are implemented in such a manner tha... | 11/06/2007 |
| 7260036 | Data processor used in a plurality of optical disk recording mediums A data processor compatible for use with a CD and a DVD includes a first modulation circuit for modulating recording data for recording on a CD to generate first modulated data. A second modulation circuit modulates recording data for recording on a DVD to generate ... | 08/21/2007 |
| 7254100 | Optical disk reproducing device selectively using a channel bit frequency or a frequency that is half of the channel bit frequency A data demodulation process rate is varied according to a reproduction state, thereby reducing power consumption while maintaining a reading performance in a favorable state. A channel rate process data demodulation device performs a data demodulation process by emp... | 08/07/2007 |
| 7248558 | Mastering device, disc manufacturing method, disc-shaped recording medium, disc reproduction device, and disc reproduction method Second digital information serving as copyright protection information can be stably and reliably read without any effect of a defect or pit missing on a disk-shaped recording medium. The second digital information is recorded onto a disk-shaped recording medium by ... | 07/24/2007 |
| 7246299 | Data recording medium, data recording method, and data recording apparatus, including additional recording features With data of four symbols (FIG. 11A), a parity of two symbols (FIG. 11B) is created. These six symbols are EFM-modulated. Each symbol of eight bits is converted into a pattern of 14 bits (FIG. 11C). In a pit/land sequence formed on a disc (FIG. ... | 07/17/2007 |
| 7242653 | Optical disc apparatus capable of detecting recording characteristics based on a predetermined signal prerecorded and reproduced An optical disk drive apparatus for recording a predetermined signal on an optical disk by varying predetermined recording conditions and detecting recording characteristics based on a reproduction signal of the predetermined signal is provided. The optical disk dri... | 07/10/2007 |
| 7236447 | Optical disk, method of playing optical disk, and optical disk drive An optical disk includes a recording region formed on a substrate for recording user data, and a management region formed on the substrate which includes an identification information region for recording disk-specific identification information such as address info... | 06/26/2007 |
| 7218593 | Recording strategy generation method and an optical information recording medium An optical information recording medium is capable of supplying an optimum recording strategy for a high-speed recording, and for a plurality of scanning speeds, using a smaller number of parameters than conventionally required. The parameters include: Td1 | 05/15/2007 |
| 7212476 | Optical disc reproducing device selectively using a channel bit frequency or a frequency that is half of the channel bit frequency A data demodulation process rate is varied according to a reproduction state, thereby reducing power consumption while maintaining a reading performance in a favorable state. A channel rate process data demodulation device performs a data demodulation process by emp... | 05/01/2007 |
| 7184380 | Reproducing device, reproducing method and audio data storage medium In order to provide an audio device capable of making more effective use of non-compressed audio data and compressed audio data, according to the present invention, compressed audio data as computer data is stored in a data track in a Mixed-mode CD. By allowing a pl... | 02/27/2007 |
| 7178087 | Read-only record carrier with recordable area in subcode channel A method of providing a read-only record carrier on which user data can be recorded at predetermined recordable positions of subcode frames of a subcode channel after mastering of said record carrier, includes the steps of setting the subcode symbols at said predete... | 02/13/2007 |
| 7167110 | Multi-level communication system and method with error correction A communication system for transmitting a six-phase modulated signal and including an efficient error correction system suitable for the six-phase modulated signal is disclosed. A transmitting apparatus comprises a ternary error correction encoding circuit for gener... | 01/23/2007 |
| 7151727 | Disc-shaped recording medium, disc-state recording medium cutting apparatus, and disc drive apparatus 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 wavefo... | 12/19/2006 |
| 7130252 | Optical recording medium having multiple reproduction modes The present invention provides a recording medium. First data is recorded in the medium, in the form of a track consisting of a plurality of bits. Second data is recorded in the form of a plurality of bits that are displaced in the direction at right angles to the t... | 10/31/2006 |
| 7120855 | Survivor path memory circuit and Viterbi decoder with the same A survivor path memory circuit and a Viterbi decoder with the circuit for saving the memory amounts. The Viterbi decoder includes a branch metric generator, an ACS (Add-Compare-Select) unit, a survivor path memory circuit and a decoding unit. The survivor path memor... | 10/10/2006 |
| 7113456 | Method and apparatus for playing back a multisession disc A method and apparatus for reading multisession discs in which both standard CD-DA format and compressed music formats, such as MP3, may be utilized on the same disc. High speed reading of data into shock proof memory, analysis of available memory and storage of ana... | 09/26/2006 |
| 7068586 | Optical disk The optical disk is a data-writable optical disk and it has a defect processing selection area. Data indicating whether a defect processing is to be executed or not, or data indicating whether the defect processing is to be executed using a disk drive or using a com... | 06/27/2006 |
| 7054244 | Modulation signal generator for producing original disc of optical disc The present invention relates to a modulated signal generator capable of carrying out signal processing at a higher speed or capable of supporting a special format and a new format with ease. A modulation processing storing unit 130 has a modulation processin... | 05/30/2006 |
| 7042372 | Encoding information in codes identifying beginning of regions of data Digital data is embedded in codes used to identify beginnings of regions of modulated data bit streams. Data may be designated by a choice of one code from a plurality of alternative codes, or data may be designated by a variable field within a code. ... | 05/09/2006 |
| 7020831 | Pipelined add-compare-select circuits and methods, and applications thereof Digital communications devices having high-speed add-compare-select circuits, and methods for designing the same. The add-compare-select circuits include logic segments separated by delay devices. The separation of the logic segments allows for pipelining of the add... | 03/28/2006 |
| 7012867 | Writing method for optical disc, processing method for information, optical disc apparatus, and information processing apparatus A writing method for an optical disc to optimize a writing speed, wherein a spiral track on the optical disc is divided into a plurality of zones, and different CLV writing speeds are used for performing a ZCLV writing to the zones respectively. The writing method c... | 03/14/2006 |
| 7002889 | Data reproduction method and apparatus In a data reproduction method and apparatus of the present invention, a Viterbi detection unit is provided, the Viterbi detection unit having a plurality of detectors each providing a first partial response signal with a first constraint length from a first sequence... | 02/21/2006 |
| 6993285 | Audio buffer processing A method and system are provided in which broadcast signals are received and converted into data streams for processing. A user is enabled to select preferred broadcast stations for monitoring and signals from the selected stations are converted into digital data st... | 01/31/2006 |
| 6958959 | Apparatus for reproducing information based on the type of compression method used in compressing the information An information reproducing apparatus which reads compressed information recorded on a recording medium by one of a plurality of different compression methods, writes the compressed information read into a memory, supplies the compressed information in the memory, to... | 10/25/2005 |
| 6920641 | Transmit device and method thereof, record/play device and method thereof as well as recording system and media A transmit device and method, a record/play device and method, a record system as well as a media allowing selection of the ideal record media by the receiver. The EPG data generator of a transmit device generates an EPG (Electronic Program Guide) showing the schedu... | 07/19/2005 |
| 6819643 | Optical disk apparatus, method of recording on optical disk, and optical disk In an optical disk apparatus, bit sequences of information regarding copyright are respectively scrambled using different binary sequences, thereby generating plural lines of signals. The plural lines of signals are further scrambled to generate a single line of dri... | 11/16/2004 |
| 6807137 | Encoding method and apparatus therefor, and optical-disk recording method and apparatus therefor For encoding a current data word to be encoded, a most suitable redundant signal for the current data word to be encoded is generated by referring to a next data word to be encoded, that is, using a look-ahead decision method. The current data word to be encoded is ... | 10/19/2004 |
| 6795383 | Optical disk and apparatus and method of recording and reproducing data thereof An optical disc, as an information recording medium for storing map audio object recorded on the optical disc in a constant bit rate format or a variable bit rate format and a recording position on the disc, can reduce a size of the map information. The map informat... | 09/21/2004 |
| 6754159 | Reproduction arrangement, transmission arrangement, method of forming and transmitting coded information and method of reproducing coded information Reproduction arrangement for receiving information coded in accordance with a predefined standard, decoding the coded information and reproducing the decoding result. The reproduction arrangement may further receive and decode trigger information, which differs from... | 06/22/2004 |
| 6737996 | Information recording and reproducing method Disclosed is a method for satisfying both high reliability and low error rate when in recording and reproducing information by making the average run length of the RLL code for recording a crystal state shorter than that for recording an amorphous state on a recordi... | 05/18/2004 |
| 6633527 | High-density disk recording medium and apparatus and method of reproducing data recorded therein The present invention relates to a disk recording medium such as a CD or a DVD in which data is recorded in high-density, and method and apparatus for reproducing data recorded in the high-density disk recording medium. The data reproducing method and app... | 10/14/2003 |
