Abstract: 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 (14). The EDC rewrite circuit (14) rewrites an error detection code appended to user data in each sector in accordance with bit information in the CPID bit block. Thereafter, the data in each sector is scrambled, and an ECC block including a plurality of sectors is modulated with an error correction code and sync signal appended thereto. The modulated signal is recorded in a reserve area of a lead-in area of the disk-shaped record medium. During reproduction, CPID is restored based on the result of error detection of each sector.

Abstract: When duplicating the record carrier the angle between the sync words S1 S2 can be preserved at the cost of a change in bit length, or the bit length can be preserved at the expense of changes in the angle between the sync words S1 S2. Consequently a playback device that checks for both changes in the angle between the sync words S1 S2, or between other marks, and for changes in bit length can detect an illegally duplicated record carrier with a high certainty.

Abstract: An optical recording apparatus with a small form factor optical drive for driving an optical record carrier is operable in different accessing modes having different data rates depending on the power mode of the recording apparatus. A Switch is provided in the recording apparatus for switching a controller for accessing the optical record carrier for reading data from or recording data to the optical record carrier. A first accessing mode has a low data rate and is used in a low power mode, while a second accessing mode has a high data rate and is used or allowed to be used in a high power mode.

Abstract: A drive, a method of operating the drive and a hybrid disc, BD9, comprising the physical layer of a dual layer DVD disc, DVD9, and the application layer of a Blu-ray disc (BD). The disc comprises a reserved area containing a modulation code and a file structure of the application layer and a BD-ROM mark for a copy protection system (CPS) according to the established BD-ROM format. The disc is readable by a conventional DVD drive, but the firmware and specific hardware and software (47,48,49) for detecting the BD-ROM mark is used. In this way, present DVD or BD drives need only firmware upgrades.

Abstract: The present invention relates to a method of writing information on an optical recording medium (10 to 38), the optical recording medium having at least one data layer (40) for storing data readable by use of an optical readout device and at least one label layer (42) for storing visible information, the method comprising the steps of: focusing a first wavelength laser beam (44 to 58) onto the at least one data layer for writing data on the data layer, and focusing a second wavelength laser beam (60 to 78) onto the at least one label layer for writing visible information on the label layer, thereby a laser spot size being usable that is also employable when using the second wavelength laser beam for writing data on a data layer for storing data readable by use of an optical readout device. The present invention further relates to an optical recording medium and to a method of manufacturing an optical recording medium.

Abstract: Devices and methods, record carrier and signal for embedding, extracting, carrying and representing secondary signal such as a copy protection signal embedded in a primary signal such as a blu ray disc signal modulated by a 17PP RMTR runlength limited modulation code. Each frame comprises a frame sync patterns followed by DC control blocks each including a DC control bit. Two modulation tables are used. Each bit of the secondary signal is represented by a relationship between the polarity of the frame sync signal and the values of the DC control bits in a fashion which complies with the constraints of the modulation code and the DC control algorithm.

Abstract: The present invention relates to a drive for accessing an optical record carrier (2) comprising means (4) for determining the type of record carrier, in particular for distinguishing a read-only record carrier from a recordable or rewritable record carrier having a wobbled groove in the lead-in zone, said means comprising: a DPD measuring unit (41) for measuring the differential phase detection (DPD) signal, a PP measuring unit (42) for measuring the push-pull (PP) signal in case no DPD signal could be measured, a wobble locking unit (43) for locking, in case a PP signal could be measured, to the wobble embedded in said wobbled groove using a first and/or a second polarity setting, and an indication unit (44) for generating a first indication signal indicating that the record carrier is a read-only record carrier if a DPD signal could be measured and that the record carrier is a recordable or rewritable record carrier if no DPD signal but a PP signal could be measured and if locking to the wobble has been suc

Abstract: The present invention relates to a recording device (1) and a corresponding recording method for recording user data in a user area (UA) on a recordable or rewritable optical record carrier (4) comprising OPC means (3) for performing optical power calibration by writing OPC test data on a record carrier (4) before user data are recorded thereon. To avoid the problem that no more user data can be recorded on the record carrier since an OPC area (40) particularly reserved for writing said OPC test data is full, and to enable the provision of a smaller OPC area (40), it is proposed according to the present invention that the OPC test data are written in said user area (41, 42) if the OPC area (40) reserved for writing said OPC test data is not usable or not provided on the record carrier (4).

Abstract: Described is an optical record carrier recording method, optical record carrier (11) and an apparatus for writing information to an optical record carrier (11). The optical record carrier recording method forms pits and lands by controlling a radiation source to direct a radiation beam onto a recording surface of an optical record carrier (11), the method comprises the steps of: reading a write strategy from the optical record carrier (11) which comprises at least two write strategies, and forming the pits and lands by controlling the radiation source with the read write strategy, wherein the method further comprises a step of determining which of the at least two write strategies is the most optimal one by reading an indication present on the optical record carrier (11), and wherein the method uses the most optimal write strategy to form the pits and the lands.

Abstract: An apparatus generates outgoing data (OD) to be provided on an optical disk (1) in a burst cutting area (2). The burst cutting area (2) further comprises markings (3) which cause a marking frequency spectrum (MFS) when reading out the burst cutting area (2). The apparatus comprises a channel coder (4) which receives processed data (PD) and supplies the outgoing data (OD) having an outgoing data frequency spectrum (DFS) with suppressed DC-content. The apparatus further comprises a data processing device (5) which generates the processed data (PD) to obtain an outgoing frequency spectrum (DFS) wherein a frequency component causing interference with a low frequent component of the markings (3) is suppressed or not present.

Abstract: The present invention is directed towards a method and device for providing data in a layered storage medium, such a storage medium, a signal (19) for provision of layer data in a storage medium as well as to a method and device for indicating correctness of content data on such a layered storage medium. Each layer of the storage medium comprises at least parts of a set of content data and identifying data (26, 28), which identifying data comprises a content identifier (26) that is common for and indicative of the whole set of content data, such that each layer having data belonging to the same set of content data has the same content identifier. In this way wrong combinations of sets of content data can easily be detected.

Abstract: The invention relates to an information carrier comprising at least a first area (12) comprising a first recordable material having thermal properties suitable for writing at a first recording speed and a second area (13) comprising a second recordable material having thermal properties suitable for writing at a second recording speed. The second recording speed is greater than the first recording speed.

Abstract: The present invention relates to an optical record carrier recording apparatus and method for recording data on a phase-change optical record carrier (55) storing a state information about the location of crystalline and non-crystalline areas of the record carrier (55). In order to provide the possibility to write with different writing speeds on the record carrier, writing means (54) for recording data on the record carrier (55) can be switched between different writing modes. The first writing mode is used if the recording apparatus (5) is in a high power mode, e.g. supplied with power from a mains power supply and if a crystalline (unwritten) area is available on the record carrier (55). If no crystalline area is available or if the recording apparatus (5) is in a low power mode, the second writing mode having a lower writing speed is preferably used.

Abstract: The invention relates to an information carrier for holding user information, the information carrier comprising access information in the form of access information bits for accessing the user information, the access information bits being stored on the information carrier in a variation of a parameter, which variation is detectable by integration detection. The access information bits are scrambled according to a pre-determined scrambling method. By scrambling the access information bits according to a pre-determined scrambling method detection of the access information is not possible as long as the scrambling method is not known. Using the integration detection technique only results in the access information is one knows how the signal obtained after reading-out the area comprising the access information bits must be processed. In this way illegal retrieval of the user information is further prevented.

Abstract: The invention relates to a data carrier comprising a first area (12) comprising a rewritable material, said first area being defined as a read-only area by means of type information recorded on said data carrier in an unerasable way.

Abstract: The invention relates to an information recording apparatus intended to record information on an optical medium by forming series of recorded marks whose length between leading edge and trailing edge corresponds to a binary value by irradiation means with a beam of light. According to the invention, said irradiation means are sequentially pulsed to at least a high laser current write level from a low laser current level LL close to zero during the writing of a recorded mark. The invention enables to lower the average laser current during writing and also erasing. As a consequence the power dissipation is lowered. Application: Information recording apparatus, especially for SFFO, BluRay standards.

Abstract: The present invention relates to an optical record carrier (55) recording apparatus (5) such as a small form factor optical drive and to a portable device (1), such as a mobile phone or a palmtop computer, comprising such an optical record carrier (55) recording apparatus (5). To enable different accessing modes having different data rates depending on the power mode of the recording apparatus an appropriate switching means (53) is provided in the recording apparatus for switching accessing means (54) for accessing an optical record carrier (55) for reading data from or recording data to said optical record carrier (55) between said accessing modes. A first accessing mode has a low data rate and is used in a low power mode while a second accessing mode has a high data rate and is used or allowed to be used in a high power mode.

Abstract: The present invention relates to magneto-optical recording technique whereby improved domain expansion reading is achieved. A mark region is recorded as a sub-mark portion and an adjacent sub-space portion, wherein the length of the sub-mark portion is set to be less than or equal to the length of the sub-space portion. Stray field variations due to different runlengths of the recording data can thus be equalized even for short channel bit lengths, while the resolution and/or power margin is improved.

Abstract: The invention relates to an information carrier for holding user information, the information carrier comprising access information for accessing the user information, the access information being stored in a pre-determined first region on the information carrier. The information carrier further comprises at least one further region different from the first region, the further region comprising dummy information. The invention is based on the insight that the noise level of a read out signal increases somewhat in the region(s) where the access information is hidden. To avoid this difference in noise level between regions with and without the access information, this access information is assigned for only a specific region of the information carrier, but dummy information is also written in other regions. Due to this, an improved copy protection system against illegal read out of the user information present or to be present on the information carrier is realized.

Abstract: A disk cartridge and storage assembly comprises an optical disk and a housing (2) in which the disk is rotatably accommodated. The housing is adapted to be inserted into a disk drive together with the disk. The cartridge comprises at least a first coupling member (5) on the housing. The assembly is provided with a link element (6) to couple the cartridge to a storage support. A second coupling member (9) is provided on the link element and is adapted to be removably coupled to the first coupling member. In this way it is possible to store or transport one or more disk cartridges in a convenient manner.