Samsung Electronics Co., Ltd.

Tdk Corporation

Sony Corporation

Panasonic Corporation

Hitachi Consumer Electronics Co., Ltd.

In-oh Hwang

Kyung-geun Lee

Hyun-ki Kim

Joo-Ho Kim

In-sik Park

Sung-hee Hwang

Chang-min Park

Jung-wan Ko

Du-seop Yoon

Takashi Kikukawa

Narutoshi Fukuzawa

Tatsuhiro Kobayashi

Harukazu Miyamoto

Motoshi Ito

Hiroyasu Inoue

Yasumori Hino

Shoei Kobayashi

Hyun-Soo Park

Jin-wook Lee

Koichiro Nishimura

Byung-ha Park

Jae-Cheol Bae

Myong-do Ro

Cheol Ham

Joo-ho Kim

Myung-gon Kim

Yoshihiro Akimoto

Soo-jin Park

Nak-hyun Kim

Saim Saher

Hui Zhao

Seung-hoon Kal

Jung-Wan Ko

Jae-seong Shim

Chong-sam Chung

Tatsuhiro Otsuka

Junji Tominaga

Yong-Jin Ahn

Seong-sue Kim

Chang-jin Yang

Kiu-hae Jung

Jin-Kyung Lee

Jin-han Kim

Jong-hyun Shin

Takayuki Shima

Takashi Nakano

Du-seep Yoon

A coating film to prevent a conspicuous fingerprint has a water contact angle of no less than 60&#xb0; so that most of water contained in fingerprints on the coating film evaporates without forming a layer adsorbed on the coating film. Further, the coating film has lipophilicity and has a diiodomethane contact angle of no more than 45&#xb0; so that the coating film exhibits enhanced affinity to fingerprints, which primarily contain oily components.

Composition for coating film to prevent conspicuous fingerprints, coating film to prevent conspicuous fingerprints using the composition, and article having the coating film

The present invention is to realize a proper inner zone layout in a quadruple-layer disk. A test area is provided in the inner zone (inner circumference side area) in each of recording layers. If two test areas closer to the outer circumference, of four test areas, are defined as a first pair and two test areas closer to the inner circumference are defined as a second pair, the test areas of the first pair and the test areas of the second pair are so disposed as to be prevented from overlapping with each other in the layer direction. Two test areas of the first pair have the same consumption direction of the test area, and are so disposed that the areas to be used next hardly overlap with each other in the layer direction. Two test areas of the second pair have the same consumption direction of the test area opposite to the consumption direction of the test area in the first pair, and are so disposed that the areas to be used next hardly overlap with each other in the layer direction.

Recordable optical disc, recording device, and recording method

A signal quality measuring apparatus includes a binary signal generating unit to generate a binary signal from an input signal; a level information extracting unit to extract level information from a relationship between the input signal and the binary signal using at least two window lengths; and a quality calculating unit to calculate a quality of the input signal based on the level information.

Signal quality measuring apparatus and method thereof

Provided is an information storage medium that has a plurality of recording layers, a recording/reproducing method, and a recording/reproducing apparatus. In the information storage medium, each of the plurality of recording layers includes an inner circumference zone and a data zone, and at least one of the recording layers includes, in the inner circumference zone, a temporary disc management area (TDMA) for recording information about a defect detected in the data zone, wherein a size of a TDMA allocated on an upper layer is greater than a size of a TDMA allocated on a lower layer.

Information storage medium, record reproduction apparatus, and record reproduction method

Provided is an information recording medium including a plurality of recording layers. Each recording layer may comprise at least one optical power control (OPC) area, and each OPC area is allocated so as not to overlap an adjacent layer in a given radius.

Information storage medium, record reproducing device, and record reproducing method

A method of encoding information and a method of decoding information, and an apparatus to perform one or both methods, and an information storage medium on which to store the information, the method of encoding the information including encrypting data between two ECC-encoding operations, and the method of decoding the information including decrypting data between two ECC-decoding operations.

Information encoding method, information decoding method, recording/reproducing apparatus, and information storage medium

The present invention is to realize a proper inner zone layout in an optical disk having at least three layers. A test area is provided in the inner zone (inner circumference side area) in each of recording layers. The test areas of each layer are so disposed as to be prevented from overlapping with each other in the layer direction. Furthermore, the number of management information recording/reproduction areas overlapping with the test area in the layer direction at a position closer to the laser-incident surface than this test area is set equal to or smaller than one in each test area of each recording layer. The management information recording/reproduction areas are each so disposed as to be prevented from overlapping with the test areas in the respective recording layers in the layer direction on the disk substrate side of the test areas.

Recordable optical disk, recording device, recording method, and reproduction device

A method of determining an optimum reproduction condition of a first mark recorded on an optical recording medium that is smaller than a resolution of a pickup to reproduce the first mark. The method includes obtaining an optimum reproduction condition of a second mark having a length which closely approximates the resolution of the pickup, and determining the optimum reproduction condition of the first mark using the obtained optimum reproduction condition of the second mark.

Method and apparatus to determine an optimum reproducing condition on an optical recording medium

An optical recording medium includes a substrate, a first dielectric layer, a recording layer, a second dielectric layer, a super-resolution layer, and a third dielectric layer, which are provided in that order. The super-resolution layer is formed of a material configured such that voids are generated when the material is irradiated with DC light at a predetermined irradiation power for 1 to 300 seconds. Therefore, super-resolution reproduction can be made such that the irradiation power of a readout laser beam does not depend on the size of a recording mark.

Optical recording medium and method for reproducing information from optical recording medium

A method of optimizing a writing condition of an optical recording medium, including writing test pattern data with the writing condition on the optical recording medium, comparing an error pattern binary signal detected by reproducing the written test pattern data with a correct pattern binary signal of the test pattern data, and determining an optimum writing condition of the optical recording medium based on a result of the comparison.

Writing condition optimizing method and apparatus, and optical recording medium

A data reproducing method reproducing data recorded in a super resolution information storage medium in a form of marks having magnitudes less than a resolving power of an incident light beam, and an apparatus thereof. The data reproducing method includes irradiating a first beam having a resolving power causing a super resolution phenomenon and a second beam having a resolving power not causing a super resolution phenomenon into different places on the information storage medium, detecting a first reproduction signal based on the first beam and a second reproduction signal based on the second beam, and compensating for and calculating a temporal delay between the first reproduction signal and the second reproduction signal. Therefore, a signal reflected from a peripheral area of a reproduction beam spot other than a super resolution area can be excluded, thereby improving reproduction signal characteristics.

Method and apparatus for reproducing data of super resolution information storage medium

A super resolution information storage medium capable of reproducing information recorded thereon as a mark with a size less than the resolution limit of an incident light beam, includes marks of varying sizes recorded thereon, excluding marks with a size in the vicinity of the resolution limit, where the resolution limit depends on the wavelength of a light source irradiating light on the information storage medium and the numerical aperture of an object lens focusing the light irradiated from the light source on the information storage medium. By adjusting the size of or excluding a mark with a size in the vicinity of the limit of the resolution that has a low C/N ratio, the C/N ratio is improved and the performance of super resolution information reproduction is improved such that high density and high capacity information storage medium can be implemented.

Super resolution information storage medium and method of recording data thereon

A super-resolution information storage medium having recording marks or pits that are smaller than the resolution limit of a beam incident from an information recording and/or reproducing apparatus, and the information recording and/or reproducing apparatus. The information storage medium includes a substrate and at least one super-resolution reproduction layer containing a super-resolution material and a high melting point material with a melting point higher than that of the super-resolution material formed on the substrate. The high melting point material suppresses movement of the super-resolution material in a melted phase so as to prevent signal degradation caused by repeated reproduction.

Information storage medium having super resolution structure and apparatus for recording to and/or reproducing from the same

A super resolution information storage medium includes: a substrate; a first super resolution layer which is formed over the substrate; a second super resolution layer which is formed over the first super resolution layer; and an insertion layer which is disposed between the first and second super resolution layers.

Super resolution information storage medium

Growing community of inventors

Seongnam-si, South Korea

In-oh Hwang