摘要:
Data is recorded on an optical disc using a combination of a user data area where user data is recorded, a control data area for reproduction provided on an inner radius side of the user data area, and an outer guard zone provided on an outer radius side of the user data area as a unit of one recording operation. In this configuration, a track pitch TP of the optical disc is greater than or equal to 0.3 μm and smaller than or equal to 0.4 μm, and the width of the outer guard zone along a radius direction of the optical disc is greater than or equal to a value of (100×TP) and smaller than or equal to a value of (125×TP).
摘要:
An information storage medium according to an aspect of this invention comprises a rewritable area, the rewritable area comprises a user area to store user data, and a defect management area to store defect management information used to manage defective areas on the rewritable area, the defect management area comprises first and second defect management reserved areas, the first defect management reserved area being used to store the defect management information in an initial state, and the second defect management reserved area being used to store the defect management information which is transited at a predetermined timing.
摘要:
A information recording medium on which stream information including images or sound and management information of the stream information are digitally recorded includes a first recording region in which first management information of the management information for use in common in management of each stream information divided every predetermined data amount can be recorded, and a second recording region in which a reference unit of information obtained by adding second management information of the management information for use in management of divided individual stream information to the divided stream information can be recorded.
摘要:
The semiconductor device according to one of the aspects of the present invention includes a semiconductor substrate of a first conductivity type, having upper and lower surfaces. A collector region of a second conductivity type is formed on the lower surface of the semiconductor substrate, and a collector electrode is formed on the collector region. Also, at least one pair of isolation regions of the second conductivity type are formed extending from the upper surface of the semiconductor substrate to the collector layer for defining a drift region of the first conductivity type, in conjunction with the collector region. A base region of the second conductivity type is formed adjacent the upper surface of the semiconductor substrate and within the drift region, and an emitter region of the first conductivity type is formed adjacent the upper surface of the semiconductor substrate and within the base region. A gate electrode is formed opposing to the base region via an insulating layer. An emitter electrode is formed on the emitter region. The collector layer has thickness in the range between 17 μm to 50 μm.
摘要:
According to one embodiment, an optical disk recorder has a control unit that records user data to a second recording area of a first layer before recording user data to a fourth recording area of a second layer and records pattern data in at least one of a first recording area and a third recording area, with respect to a multilayer recording medium comprising the first layer which has the first recording area provided on an inner circumferential side of an optical disk, the second recording area provided on an outer circumferential side thereof, to which user data is recorded, and the third recording area provided on an outer circumferential side thereof, and the second layer which has the fourth recording area laminated on the first layer, to which user data is recorded.
摘要:
An information recording medium includes a user information storage area which stores user information, a test write area which is extendable and for test write of information, a spare area which is extendable and capable of alternatively storing user information, and a recording position management information area including recordable range information expressing recordable ranges in the aforesaid test write area and the aforesaid spare area. The information recording medium, an information reproducing apparatus, an information reproducing method and an information recording method which make it easy to record and reproduce information properly are provided.
摘要:
An IC card comprising: an IC module including an IC-chip in which intrinsic information is stored at the stage of card manufacturing or card issuing and an antenna supported by an antenna supporting member; and two base plates between which the IC module incorporated with an adhesive layer; wherein hidden intrinsic information corresponding to the stored intrinsic information is recorded on a part of the antenna supporting member in such a way that the hidden intrinsic information is invisible by reflection light from the surface of the IC card and is read out from transmission light due to a transmission density difference between the recorded part of the hidden intrinsic information and a non-recorded part.
摘要:
An information recording medium according to an aspect of this invention includes a data area (A2) for recording user data and an address area (DMA address area) for recording address data that indicates the position of a defect management area that manages a defect present in the data area.
摘要:
Communication devices, communication systems and communication methods are disclosed, which are capable of easily changing the settings of a client and lightening the workload of a user. Even if the settings of a client device do not correspond to the settings of an access point, by changing the settings of the access point, setting information is sent to the client device to automatically change the settings of the client device to settings corresponding to the settings of the access point after change.
摘要:
A demodulation apparatus that can support various oscillation frequencies. The portable phone device includes a frequency synthesizer for generating a local-oscillation signal having a local oscillation frequency for converting the frequency of an input receiving signal into an intermediate frequency based on an oscillation signal generated by an TCXO and a synchronization hold portion provided with an NCO for generating a signal having a predetermined frequency based on the oscillation signal generated by TCXO. The frequency synthesizer makes the local oscillation frequency variable by setting the dividing ratio variable in accordance with an arbitrary oscillation frequency so that the intermediate frequency remains within a predetermined range regardless of the oscillation frequency, and an NCO makes the frequency of the signal variable by setting the dividing ration variable in accordance with the oscillation frequency.