Abstract: An information recording medium (10, 301) contains content information and a judging program which is executed by an information reproducing device for reproducing the content information and judges whether the information reproducing device is authorized.

Abstract: By controlling light emission, non-emission, and light intensity of each of the light emitting elements arranged on a backlight unit, a point-shaped light emitting point is created and the light emitting point is moved along the arrangement of pixels formed on a liquid crystal display panel unit. By moving the light emitting point as if an electron beam were scanning in the CRT display, it is possible to enhance the dynamic image blur removal effect.

Abstract: A hologram recording apparatus (300) is provided with: a recording device (100) for recording record information into a hologram recording medium (1); a measuring device (325) for measuring a time elapsed from when the recording of the record information is stopped to when the recording of the record information is restarted; a first controlling device (354) for controlling the recording device to multiplex-record the record information, if the measured elapsed time is shorter than a time length in which the record information can be multiplex-recorded; and a second controlling device (354) for controlling the recording device not to multiplex-record the record information, if the measured elapsed time is longer than the time length in which the record information can be multiplex-recorded.

Abstract: Backlight of a backlight device (3) attached to a liquid crystal panel device (2) is created by a multitude of light emitting diodes, and light emitted from each light emitting diode is modulated by position information indicating the position of a display screen (21A). The light receiving device (4) receives the backlight, modulates it, takes out the position information and detects the position on a display screen (21A) based on the position information.

Abstract: At least a first recording layer (L0 layer) and a second recording layer (l,1 layer) are provided. In the first recording layer, a first recording track path (a groove: a guiding groove) is formed for recording recording information. The second recording layer is arranged on the first recording layer and has a second recording track path (a groove: a guiding groove) formed in an opposite direction to the first recording track path for recording recording information. On an edge part on one side of the second recording layer, a first buffer area (103-1) is previously formed as a pre-recording area by an embossed pit (in the case of DVD-RW) or by a pit formed by recording laser irradiation (in the case of DVD-R).

Abstract: An information recording apparatus (300) is provided with: a recording device (352) for recording record information into a first or second recording layer by irradiating thereon laser light; a first controlling device (354) for controlling the recording device to record the record information into a first object area of the second recording layer which faces a recorded area of the first recording layer; and a second controlling device (354) for controlling the recording device to record the record information into a second object area of the second recording layer which faces an unrecorded area of the first recording layer smaller than a predetermined width, out of an unrecorded area whose both ends are adjacent to the recorded area.

Abstract: A disc-shaped information recording medium has a first and a second recording layer. A buffer area is arranged adjacent to a recording area of each of the layers for preventing deviation of the recording position onto/from each of the layers. A first part of the information is written along a first track path on the first recording layer, a predetermined amount of first buffer data in a part of the buffer area of the first recording layer is written into the first recording layer, and inter-layer jump is performed from the first recording layer to the second recording layer. A predetermined amount of second buffer data in the buffer area of the second recording layer is written in the second recording layer and write element is controlled to write a second part of the information to be recorded, on the second recording layer by changing the recording direction.

Abstract: A second layer is a recording-enabled layer (15) where content data can be additionally written or rewritten and a first layer is reproduction-dedicated layer (14) where no wobble is formed.

Abstract: An image data transmission system comprises a first terminal device (110) and a second terminal device (210) included in a communication network. (I) The first terminal device (110) includes first processing means (111) for performing such a first operation upon image data as contains an adding operation to add management information containing copyright information and an embedding operation to embed a watermark on the copyright holder, thereby to generate communication data, and first communication means (112) for transmitting communication data. (II) The second terminal (21) includes second communication means (212) for receiving the communication data, and recording means (215) for recording the image data, to which either the communication data or the management information contained in the communication data is added and in which the watermark is embedded, in a recording medium.

Abstract: On an optical disc, a record mark having a variable length according to pit data DP is formed at a displaced position to which the record mark is displaced, in a direction crossing the reading direction thereof, according to a wobble signal WB obtained by modulating wobble data DW in a predetermined modulating method. A second wobble synchronization signal D-SYNCw, as a dummy, is recorded on the optical disc, away from the start position of the wobble data DW.

Abstract: An information recording medium (100), provided with: a first recording layer (L0 layer) and a second recording layer (L1 layer) in which record information can be recorded; and a plurality of first block areas, each of which includes a recording area (105a) of a first size on the first recording layer and a recording area (115a) on the second recording layer located at a position facing the recording area of the first size on the first recording layer, and each of which is a unit by which the record information is recorded, at least one of the first recording layer and the second recording layer comprising a size area (104, 114) to record therein first size information (121) which indicates the first size.

Abstract: An optical disk includes a substrate covered with an information recording layer. The information recording layer includes a recording material and an exothermic material dispersed in the recording material. The exothermic material absorbs recording light for recording information, and then generates heat. An external dimension of the exothermic material is smaller than the diffraction limit of reading light for reading information. The recording material has absorptance of a wavelength of the recording light lower than that of the exothermic material. Information is recorded on the recording material as the light refraction index of the recording material changes due to heating.

Abstract: An information recording device is used for recording record information in an information recording medium at least including a first recording layer capable of forming a first recording area and a second recording layer capable of forming a second recording area. The information recording device includes: write elements; acquisition elements for acquiring offset information indicating a relative shift; calculation elements for calculating an address (“Y?=Inv Y??”) indicating a second boundary point opposing to a first boundary point according to the offset information; and control elements for controlling the write elements so as to write record information (i) while making the first boundary point a recording end or start position and (ii) making the second boundary point indicated by the calculated address a recording start or end position.

Abstract: A distribution system is provided with: a distributing apparatus being provided with: a first compressing device (202) for compressing first data, which is a reproduction reference in a first compression method (MPEG2); a second compressing device (203) for compressing second data other than the first data in a second compression method (MPEG4); an encrypting device (205) for encrypting at least one portion of the compressed first data; and a distributing device (207) for distributing each of the encrypted first data and the compressed second data to a receiving apparatus, and a receiving apparatus being provided with: a receiving device (307) for receiving each of the encrypted first data and the compressed second data; a converting device (304) for converting the compression method for the compressed second data to the first compression method; and a generating device for generating the content data by combining the encrypted first data with the second data whose compression method is converted.

Abstract: An information recording device (200) includes: (i) conversion element (204, 206, etc.) for converting still image data into dynamic image data of a predetermined resolution; (ii) generation element (202a, etc.) for generating unique information (such as ID and CCI) on still image data (JPEG) and dynamic image data; (iii) first superimposing element (202) for superimposing the unique information on the still image data; (iv) second superimposing element (205) for superimposing the unique information on the dynamic image data; and (v) recording element (208) for recording still image data and dynamic image data on which the unique information has been superimposed, in an information recording medium.

Abstract: An information recording medium (100) is provided with: a recording track (GT), which is wobbled, on which information is recorded by forming a recording pit row thereon, the recording pit row is formed to be wobbled in an opposite phase to a phase of the wobbling of the recording track.

Abstract: A recording medium (100) is provided with: an element layer including a semiconductor element (110) and an emission element (130), which emits light on the basis of an instruction from the semiconductor element; and a recording layer (120) in which readable predetermined data is recorded by irradiating a light beam.

Abstract: An information recording medium (100) is provided with: a first recording layer (L0 layer) having a first calibration area (103-1) in which test information for calibrating a power of laser light in recording record information can be recorded; and a second recording layer (L1 layer) having a second calibration area (103-2) in which the test information can be recorded and in which at least one portion of a recording area faces the first calibration area, wherein the first calibration area and the second calibration area including a space area (103U-1, 103U-2) having a predetermined size in positions facing each other, the test information is recorded in a recording area (103R-1) located on one side, centered on the space area, in the first calibration area, and the test information is recorded in a recording area (103R-2) located on other side which is opposite to the one side, centered on the space area, in the second calibration area.

Abstract: An information recording medium includes a reproduction-dedicated area (160) where first recording information (60-1, etc.) is recorded in such a manner that its reproduction will not be disabled when it is reproduced, and a number-of-reproductions limit area (150) where second recording information (50-1, etc.) is recorded in such a manner that its reproduction will be disabled when a predetermined number of reproductions are performed. The second recording information (50-1, etc.) is correlated with the first recording information (60-1, etc.).

Abstract: An information recording medium (100) is provided with: a record information area (106) to record therein record information; an edge portion area (104, 108, 109) which is located in at least one edge portion of the record information area; and a flag area (121) to record therein a first pre-record flag for indicating whether or not predetermined pre-information is pre-recorded in at least one portion of the edge portion area.