Patent application number | Description | Published |
20080310292 | OPTICAL DISK, OPTICAL DISK RECORDING AND REPRODUCING APPARATUS, METHOD FOR RECORDING, REPRODUCING AND DELETING DATA ON OPTICAL DISK, AND INFORMATION PROCESSING SYSTEM - A recording type optical disk on which data is recordable includes a data recording and reproducing area for recording data therein and reproducing data therefrom, and a read-only disk identification information area for recording disk identification information for identifying the optical disk therein. In the optical disk, the disk identification information is formed by removing a reflection film that is formed on the optical disk in a strip shape. The disk identification information includes an inherent disk identifier for each optical disk, and the data recording and reproducing area includes an area for recording encrypted data therein. The encrypted data is encrypted by using information including the disk identification information for identifying the optical disk as a key. | 12-18-2008 |
20090034383 | DISK-SHAPED RECORD MEDIUM AND PRODUCING METHOD FOR SAME, DISK RECORDING METHOD AND DEVICE, AND DISK PLAYBACK METHOD AND DEVICE - To record specific information to a disk-shaped record medium and reproduce the recorded specific information without any influence on the error correction capability. Copy protection information (CPID) having an error correction code appended thereto, shuffled and otherwise treated is sent as a CPID bit block to an EDC rewrite circuit ( | 02-05-2009 |
20100131821 | DATA RECORDING METHOD, RECORDING MEDIUM AND REPRODUCTION APPARATUS - A recording medium for storing a data stream is comprised of first error correcting codes obtained by encoding first information, second error correcting codes obtained by encoding second information, and synchronization signals. In the data stream, the second error correcting codes and the synchronization signals alternatively interleave the first error correcting codes. The second error correcting codes have the same number of corrections as the first error correcting codes. A code length of the second error correcting codes is shorter than a code length of the first error correcting codes. | 05-27-2010 |
20100188721 | TWO-DIMENSIONAL ENCODER, HOLOGRAPHIC MEMORY DEVICE AND HOLOGRAPHIC MEMORY MEDIUM - A two-dimensional encoder stores data on a holographic memory. The encoder encodes data of k bits (where k is an integer and k≧3) into n pixels arranged two-dimensionally (where n is an integer and n≧6). The encoder includes a first processing section | 07-29-2010 |
20110004891 | INFORMATION RECORDING DEVICE, INFORMATION REPRODUCING DEVICE, AND INFORMATION RECORDING MEDIUM - The invention provides an information recording device, an information reproducing device, and an information recording medium capable of securely protecting copyright of main information, and preventing illegal access to the recorded main information. The information recording device ( | 01-06-2011 |
20110007616 | OPTICAL DISC RECORDING APPARATUS, OPTICAL DISC RECORDING CIRCUIT AND OPTICAL DISC - An optical disc recording apparatus ( | 01-13-2011 |
20110299371 | OPTICAL DISK DEVICE, OPTICAL DISK CONTROL METHOD, AND INTEGRATED CIRCUIT - To provide an optical disk device, an optical disk control method and an integrated circuit, which are capable of writing a recordable mark by changing the reflectance ratio of a reflective film formed on concave-convex pits without using an industrial special device or a high-power laser light source. A data reproduction controller ( | 12-08-2011 |
20120082018 | OPTICAL DISC RECORDING DEVICE AND RECORDING SIGNAL GENERATING DEVICE - Provided are an optical disc recording device and a recording signal generating device which enable to correct displacement between a reproducing position of a reproduction signal from a concave-convex mark preformed in an optical disc, and a recording position of second information to be recorded in synchronism with the reproduction signal, and stably and speedily record the second information. A digital signal processor ( | 04-05-2012 |
20120096326 | OPTICAL DISK REPRODUCTION APPARATUS, OPTICAL DISK REPRODUCTION METHOD, REPRODUCTION PROCESSING DEVICE AND REPRODUCTION PROCESSING METHOD - Provided is an optical disk reproduction apparatus capable of preventing information that is different from the original sub information from being subjected to error correction erroneously, and of stably reproducing the sub information. The optical disk reproduction apparatus ( | 04-19-2012 |
20140053044 | DECODING DEVICE AND DECODING METHOD - A decoding device ( | 02-20-2014 |
20140126657 | DECODING SYSTEM AND DECODING METHOD - A decoding system includes: a modulator which modulates user data by using a modulation rule which converts the user data into a modulation pattern; a regenerator which generates a regenerative signal from a signal obtained by transmitting the user data after modulation through a transmission path; a transmission path decoder which generates signals as generation signals corresponding to the modulation pattern, and calculates k (k is a positive integer) distances between the regenerative signal and the k generation signals in an interval having a length fixedly or dynamically determined; and a demodulator which calculates reliability information for each bit of the user data, and estimates each bit of the user data based on the calculated reliability information. The demodulator calculates likelihood that each bit of the user data is 1 and each bit of the user data is 0 by Formula (A), and calculates the reliability information by Formula (B). | 05-08-2014 |
20140198629 | STORAGE DEVICE AND STORAGE METHOD - A storage device | 07-17-2014 |
20140334282 | DECODING DEVICE AND DECODING METHOD - A decoding device includes: an interference canceling circuit ( | 11-13-2014 |