Abstract: An information recording apparatus includes a recording device capable of recording record information onto an information recording medium having a plurality of recording layers; a selecting device for sequentially selecting one recording layer to record therein the record information, such that a recording area of the record information recorded into each of the plurality of recording layers substantially uniformly expands, in accordance with the recording of the record information; a generating device for generating virtual reference information including logical address information on the information recording medium corresponding to the record information on a logical address space such that a recording position of the record information on the logical address space of the information recording medium is in a recording order of the record information onto the information recording medium; and a controlling device for controlling the recording device to record the generated virtual reference information o

Abstract: Even when a movie or the like is distributed in an electronic state, reproduction control can be effectively performed for each region at a distribution destination, thereby providing a reproduction control program capable of widely distributing distributed information in an effective manner. The reproduction control program acquires distribution information which is distributed along with region information indicating a reproduction permitting region, and the reproduction control program is installed to a terminal T to operate the terminal T for reproducing the acquired distribution information. The region information indicating the reproduction permitting region based on the reproduction control program is stored in the terminal T, and it is confirmed whether or not a coincidence is made between a region indicated by the stored region information and a region indicated by stream region information included in the acquired distribution information.

Abstract: An information recording medium is provided with a plurality of disc-shaped recording layers for recording a plurality of pieces of information, respectively. One recording layer (L0 layer) is provided with an identifying information recording area (NBCA) wherein identifying information (for instance, a media ID) is prerecorded for identifying the information recording medium, and other recording layers (L1 layer, L2 layer) are provided with a record control information recording area (RMA) wherein record control information can be recorded.

Abstract: An information recording device (300) transmits first area information (510) from an information recording medium (100) to an information distribution device (200). The information distribution device acquires an encryption key from the first area information transmitted from the information recording device and encrypts the recorded information (content). The information distribution device distributes the encrypted recorded information (encrypted content) and second area information (520) corresponding to the first area information to the information recording device. When the first area information coincides with the second area information, the information recording device records the distributed encrypted recorded information and the second area information on the information recording medium.

Abstract: An information recording apparatus comprising: a writing device capable of writing record information onto an information recording medium comprising first and second recording layers; a first controlling device for controlling said writing device to continuously write the record information into the first and second recording layers; a second controlling device for controlling said writing device to write a predetermined amount of buffer data on an outer circumferential side of the record information written in the first and second recording layers; and a third controlling device for controlling said writing device to add buffer data on an outer circumferential side of the predetermined amount of buffer data.

Abstract: An information recoding medium having a substrate (32) and a recoding layer (30) whose optical property is changed by being irradiated by a laser beam to display or erase a visible display pattern.

Abstract: An eccentricity detecting method is a method of detecting an eccentricity between a first recording layer (L0 layer) and a second recording layer (L1 layer) of an information recording medium (100) provided with the first recording layer and the second recording layer, each of which is for recording record information, the eccentricity detecting method is provided with: a detecting process of detecting at least one of first position information indicating a position of each of at least two reference points (A, B, C, D) in one recording layer out of the first and second recording layers and second position information indicating a position of respective one of at least two target points (a, b, c, d), which corresponds to each of the at least two reference points respectively, in other recording layer out of the first and second recording layers; and a calculating process of calculating the eccentricity, on the basis of the at least one of the first and second position information detected.

Abstract: At least a first recording layer (L0 layer) and a second recording layer (L1 layer) are provided. The fist recording layer is disc-shaped, and has a first recording track path formed for recording recording information. The second recording layer is disc-shaped, arranged on the first recording layer and has a second recording track path formed in an opposite direction to the first recording track path for recording recording information. On edge parts on the outer circumference sides of the first recording layer and the second recording layer, first buffer areas (104-0 and 104-1) are further provided for preventing a recording or reproducing position from deviating from the first recording layer or the second recording layer and for interlayer jump. At least a part of the first buffer area 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) transmits identification information (Media ID) of an information recording medium (100) to an information distributing apparatus (200). The information distributing apparatus obtains an encryption key (disk key) from the identification information which is sent from the information recording apparatus, and encrypts record information (content). The information distribution apparatus distributes the encrypted record information (encrypted content). The information recording apparatus records the distributed encrypted record information into the information recording medium.

Abstract: An information recording device (1) includes: recording elements (501) for recording information on an information recording medium by recording layer light having adjustable recording power; optimization elements (571) for controlling the recording elements so as to modify the recording power at least into several levels and recording real data corresponding to the data used by the recording elements when recording information; and adjusting elements (504) for adjusting the recording power in the recording elements to be an optimal value.

Abstract: An information recording medium (100) includes: a first recording layer (107); a semitransparent reflective film (108) to reflect at least one portion of laser light for recording with which the first recording layer is irradiated; a second recording layer (207) which is irradiated with the laser light for recording through the first recording layer and the semitransparent reflective film; and a reflective film (208) to reflect the laser light for recording with which the second recording layer is irradiated, thermal conductivity from the second recording layer to the reflective film when the second recording layer is irradiated with the laser light for recording being substantially equal to thermal conductivity from the first recording layer to the semitransparent reflective film when the first recording layer is irradiated with the laser light for recording

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: In an information recording medium, positions of pits are modulated in a direction intersecting a direction of reading of pits, so that a predetermined information is recorded. In this information recording medium, the whole of the predetermined information or a part of the predetermined information is randomized through the used of spread spectrum.

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.

Abstract: A network game system for operating on a network a game made up of basic content containing a basic program for executing start of a game solely and one or more types of relevant content each containing a relevant program corresponding to the basic program for further advancing the game started by the basic program. The system includes a content management section adapted to set an address of which users are not notified in one or more content providing servers each in which the relevant program is placed, the address for which a search is made by search means on the network from a user terminal; wherein the content providing server sends the relevant content placed in the content providing server to the user terminal in response to a download request made by the accessing user.

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: An information recording medium comprising: a first recording layer in which a first recording track path to record therein record information is formed; and a second recording layer which is laminated on said first recording layer and in which a second recording tack path to record therein the record information is formed in a direction opposite to the first recording track path, in one recording layer of said first and second recording layers, a predetermined area in which focus leading of laser light is performed reflecting the laser light, in the other recording layer of said first and second recording layers, a facing area which faces the predetermined area not reflecting the laser light.

Abstract: An information recording medium (100) is provided with: a first recording layer (L0 layer) and a second recording layer (L1 layer) in each of which record information can be recorded, the information recording medium includes a plurality of block areas, each of which is a unit of recording the record information and each of which includes a partial recording area of the first recording layer (105a) and a partial recording area of the second recording layer (115a) located in a position facing the partial recording area of the first recording layer

Abstract: An information reproducing apparatus, in which a disk having correction data recorded thereon is placed, acquires region information indicative of a region corresponding to the correction data after load processing is performed by a ROM loader. Then, under the control of a CPU, the apparatus determines the correction data to be used for correcting a reproducing program based on the region information, reads the correction data from a lead out area or its outer region on the disk, temporarily retains the read correction data in a first RAM or a second RAM, and then stores the correction data to be resident in a nonvolatile first flash memory or a second flash memory, to correct the reproducing program based on the correction data. The information reproducing apparatus thereafter reproduces user data recorded on the disk according to the corrected reproducing program.

Abstract: An information recording medium includes: a first recording layer to for recording first information; and one or a plurality of second recording layers, disposed on the first recording layer, for recording second information. Each recording layer has a predetermined area in which power calibration is performed to detect an optimum recording power of laser light for recording, which is transmitted through the first recording layer and other layers of the second recording layers, the first recording layer, the other layers of the second recording layers, and each of the second recording layers arranged in this order as viewed from an irradiation side of the laser light, and in a facing area, which faces the predetermined area, in the other layers of the second recording layers and the first recording layer, by forming embossed pits.