129results about "Sensing record carrier/container features" patented technology

A disk drive including a delay circuit to provide a delayed reset signal is disclosed. The disk drive includes a head to perform write and read operations to and from a disk and a disk controller that is coupled to the head to control the write and read operations performed by the head. The disk drive further includes: a power loss detection circuit to detect a power loss and to generate a reset signal in response to the power loss; a reset power line coupled to the disk controller and the power loss detection circuit to provide a non-delayed reset signal to the disk controller; and a delay circuit coupled to the reset power line wherein the delay circuit delays the reset signal to provide a delayed reset signal.

A memory data reader of a magnetic tape library device reads from a memory of a magnetic tape cartridge containing a magnetic tape, information pertaining to data read from or written to the magnetic tape by a magnetic tape drive device. A maintenance / replace determining unit determines whether the magnetic tape drive device needs maintenance or replacement from the read information.

<DEL-S DATE="20010213" ID="DEL-S-00001">A copy prevention method and apparatus of a digital magnetic recording / reproducing system performs the copy prevention function by encoding to insert a marker involving copy prevention function information and executing the function and allows a program supplier to realize a desired copy prevention function of various patterns, in which the marker formed by a control word for scrambling audio and video bit straps and copy prevention information for preventing an illegal copy is encrypted by an encoded key to be multiplexed with the audio and video bit strips scrambled by the control word. The marker transmitted is detected from the bit strips to be decrypted and analyzed by the encoded key to determine whether the copy is permitted or not, so that the detected marker is updated to be recorded on a video tape and the control word is produced from the marker to perform the descrambling to supply the result to a monitor to be displayed. Thus, the program supplier selects the copy prevention function, and a separate format converting apparatus is not required since a field defined within a GA format is utilized while an existing DVCR is not need to be changed for performing the copy prevention function as the data amount to be recorded is not increased.<DEL-E ID="DEL-S-00001"> <INS-S DATE="20010213" ID="INS-S-00001">The method and apparatus for transmitting and / or recording digital data generates control data and initializes a scrambler based on the control data. Digital data is scrambled using the scrambler. A marker is formed including the control data and the scrambled digital data and the marker are transmitted or recorded as a packet. The packet includes a header, which includes the marker. When the scrambled digital data and the marker, as a packet, are received, the marker is detected and the control data is obtained from the marker. A descrambler is initialized based on the control data, and the scrambled digital data is descrambled using the descrambler. <INS-E ID="INS-S-00001">

Provided is a tape recorder that has a tape including at least one partition and that controls access to the tape. The tape recorder includes: means for identifying a position of data on the tape; means for sequentially reading necessary data areas in the data; means for sequentially copying the necessary data areas to the beginning of an empty area on the tape; means for creating a continuous front empty area formed of unnecessary data areas and copy source areas of the necessary data areas on the tape; and means for moving a beginning of the partition (BOP) to a position immediately after the front empty area and for updating the position information on the beginning of the partition.