摘要:
A tape driving apparatus and a recording medium, capable of detecting a target running amount during High Speed Search. Wherein upon a search command, a system controller sets a target position based on a specified position specified by this search command. Then, the system controller calculates the target running amount from the current position to the target position based on a spanned distance and calculates the target count value as the running amount corresponding to the calculated distance. Then, the system controller runs the magnetic tape while counting the reel FG pulses and shifts to High Speed Search. Starting High Speed Search, the system controller judges whether or not the count value of the reel FG pulses has reached the target count value. When it judges that the count value has not reached the target count value, it considers that the target position has not been reached yet and continues High Speed Search. When, it judges that the count value has reached the target count value, it shifts to Normal Search. After shifting to Normal Search, it judges whether the specified position has been reached or not based on information read out of the magnetic tape and when it judges that the specified position has not being reached yet, it continues Normal Search. When it judges that the specified position has been reached, it ends the search.
摘要:
A drive unit includes a tape driver for writing/reading information on/from a magnetic tape in the tape cassette including the magnetic tape and a memory for writing management information for managing writing on or reading from the magnetic tape when the tape cassette is loaded, a memory driver for writing/reading management information on/from the memory of the loaded tape cassette, and a controller in which when the tape driver executes an operation of writing or erasing information on the magnetic tape, or an operation of initializing the magnetic tape, the controller controls the memory driver to set flags in the management information of the memory to indicate that the operation is being executed, and in which, in accordance with completion of the operation, the controller controls the memory driver to reset the flags.
摘要:
A tape drive apparatus, wherein when receiving eject commands from a host computer, judgement of the content of load point enable flag is made, and in the case where the load point enable flag is, for example, “1”, that is, the load point is effective, search of a device area or optional device area just before a partition specified by the load point is started. When reaching a desired device area, necessary unloading processing is carried out, and ejection of a tape cassette is carried out. Thus, unloading is realized at a specified position.
摘要:
A tape cassette and a tape streamer drive for driving the tape cassette are provided. MAFN data and VMAFN data are defined so as to indicate the maximum frame number of all frames formed in a partition and the maximum frame number of frames in a valid area in the partition, respectively. The MAFN data and the VMAFN data are stored in a MIC disposed in the tape cassette. The size of an available recording area remaining in the partition is calculated from the MAFN data and the VMAFN data. Thus, a powerful technique is achieved for managing the tape cassette used in a data storage application.
摘要:
In a tape cassette including a magnetic tape having a plurality of partitions in which recording data is written, numbers P1, P2, P3, . . . respectively assigned to the partitions are arranged in an ascending order from the beginning end BOT of the magnetic tape toward an end EOD thereof. When a partition is newly appended, the last partition is divided, and the region behind the dividing part is used as a new partition which is assigned by a number Pn+1 obtained by increasing the maximum number Pn among the partition numbers which existed before the division, so that partitions can be freely appended or deleted.
摘要:
An information recording/reproducing apparatus inculding a identifying means for identifying an loaded cassette as a first type tape cassette or a second type tape cassette, the loaded cassette having a tape-shaped record medium in a cartridge, the first type tape cassette having a non-volatile memory in the cartridge, the second type tape cassette not having a non-volatile memory in the cartridge, an initializing portion for initializing at least the non-volatile memory when the loaded cassette is the first type tape cassette and for initializing the tape-shaped record medium when the loaded cassette is the second tape cassette, and a recording/reproducing portion for recording/reproducing data to/from the tape-shaped record medium in the tape cassette, the tape-shaped record medium being initialized by the initializing portion.
摘要:
A programmable integrated circuit has multi-layer wiring with openings over fuses, and a fabrication method forms the openings for each fuse, to avoid damage due to the blowing off of the fuses. The forming of the openings is performed by etching each insulating layer on the fuses after it is formed over the pre-formed wiring-layers. This results in shorter etching time as compared to the prior art etching method where the openings are etched in all the layers for the whole depth in one process step. Because of the shorter time necessary for each etching, overetching and side-etching are reduced, thus providing the openings with more accurately determined dimensions, which provides higher yield for manufacturing the device. The contact holes and the windows for the bonding pads in each insulating layer are etched in the same fabrication step for forming the openings for the fuses in the same insulating layer. This requires no additional fabrication processes for the IC and results in no increase of the fabrication time and cost.
摘要:
A communication apparatus capable of fully exhibiting capabilities that are inherently possessed by the communication apparatus for performing near field communication, a communication method for use therewith, and a program for use therewith an initiator performs near field communication with a target in accordance with NFCIP-1 are provided. For example, for each of predetermined n+1 types of capabilities possessed by the initiator or the target, the initiator generates capsules [0] to [n] containing one or more pieces of information related to a corresponding capability (S61). Next, the initiator generates a command ATR_REQ containing the generated capsules [0] to [n] (S62 to S64). Then, the initiator transmits the command ATR_REQ to the target. The present invention can be applied to, for example, an IC card system.
摘要:
A communication apparatus includes a short-range communication unit that receives an inquiry signal from a short-range external communication apparatus and transmits a response signal in response to the inquiry signal. The communication apparatus also includes a long-range communication unit that communicates in a range wider than a communication area of the short-range communication unit. Further, the communication apparatus includes a session key generation unit that generates a session key, and an encrypting unit that encrypts the session key. The communication apparatus uses an encryption key transmitted from an external communication apparatus to encrypt the session key into an encrypted session key, transmits the encrypted session key to the external communication apparatus, and receives from the external communication apparatus a request signal to request a long-range communication, with the session key, by the long-range communication unit by using the short-range communication unit.
摘要:
The present invention relates to a communication system and communication method which enable various types of near field communication, and a data processing apparatus. NFC communication apparatuses 1 to 3 have two features in that each can perform communication in two communication modes and that each can perform data transmission at a plurality of transfer rates. The two communication modes consist of a passive mode and an active mode. In the passive mode, between the NFC communication apparatuses 1 and 2, for example, the NFC communication apparatus 1 transmits data to the NFC communication apparatus 2 by modulating electromagnetic waves generated by itself, while the NFC communication apparatus 2 transmits data to the NFC communication apparatus 1 by performing load modulation on the electromagnetic waves generated by the NFC communication apparatus 1. Alternatively, in the active mode, either of the NFC communication apparatuses 1 and 2 transmits data by modulating electromagnetic waves generated by itself. The present invention can be applied to, for example, an IC card system, etc.