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7619841 |
Disk drive subtracting low frequency disturbance from a servo burst signal
A disk drive is disclosed including a disk having a plurality of data tracks, wherein each data track comprises a plurality of data sectors and a plurality of servo sectors, and each servo sector...
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7616395 |
Information reproduction apparatus
There is provided an information reproduction apparatus that can suppress degradations in the qualities of reproduced data and timing from due to interpolation errors when performing interpolation...
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7440675 |
AV information reproducing system and a reproducing method applied to the same system
In a system for reproducing AV information from a recording medium, such as a DVD, not only are usual titles reproduced, but also related information relevant to specific stream information is...
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7417713 |
Optical disc with a theft deterrent coating
An optical disc used for storing content includes a theft control area selected to render the disc unreadable. The disc must be exposed to radiation of a specific wavelength before it can be read...
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7400821 |
Device and method for reproducing photographic sound recordings
For a reproduction of optical sound information in a double variable-area track (DZ) an optoelectronic converter device scans the optical sound track of a film. The converter device generates a...
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7313539 |
Method and system for reserving future purchases of goods or services
A method and system for reserving future purchases of goods or services. A server network device provides to a client network device via a computer network, a list of available goods or services...
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7263501 |
Point-of-care inventory management system and method
A system and method are disclosed for controlling an inventory of a plurality of point-of-care diagnostic devices. The plurality of devices includes at least one type of device. Each device is...
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7245450 |
Synchronous servo channel for longitudinal position detection and position error signal generation in tape drive systems
A fully synchronous longitudinal position (LPOS) detection system is provided for improving the reliability of servo channels in tape systems. The system is based on the interpolation of the servo...
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7185248 |
Failure analysis system and failure analysis method of logic LSI
A failure analysis system of a logic LSI incorporates software therein. The analysis system includes a function to record the terminal signal information of said logic LSI in synchronization with a...
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7139148 |
Recording medium, recording method, and recording apparatus
When the data recording is performed on a magnetic tape in various recording densities, information relating to the recording density (recording-density related information) is recorded in the data...
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7139147 |
Apparatus and method for drive control, and computer product
A drive control apparatus receives an instruction from an upper unit, to mount a predetermined medium onto a predetermined drive unit. If a combination of the predetermined medium and the...
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7017065 |
System and method for processing information, and recording medium
To provide an integrated information processing unit that is capable of producing images and sounds of high quality. It includes a control unit, information processing units, and a merge unit. Each...
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7003674 |
Disk drive employing a disk with a pristine area for storing encrypted data accessible only by trusted devices or clients to facilitate secure network communications
A disk drive is disclosed comprising a disk for storing data, the disk comprising a public area for storing plaintext data and a pristine area for storing encrypted data. The disk drive comprises a...
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6956709 |
Write velocity identification in a PRML system
A tape drive and method of identifying write velocity during reading are provided. When a track is being read, a lead-in code of the data signal is processed prior to determining the data stream....
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6934099 |
Digital data reproducing apparatus
A digital data reproducing apparatus includes, a read head for reading data from a recording medium, an analog-to-digital converter for converting the data read by the read head into digital data,...
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6876511 |
Disk drive and method of detecting servo address mark in the same
A detector detects, in read data, a servo address mark of a type indicated by a register. Every time a SAM is detected during a self servo process, a CPU carries out tracking control in accordance...
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6813107 |
Apparatus and method for detecting an optimal writing power
Method and apparatus accomplishing an OPC (optimal power calibration) at a test area secured in data recording area of a writable optical recording medium and detecting an optimal writing power...
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6788484 |
PLL circuit, data detection circuit and disk apparatus
A PLL circuit is disclosed which extracts phase difference information of a high S/N ratio from a readout signal uses the phase difference information for PLL control. An A/D converter samples the...
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6731451 |
Information management apparatus
The present invention relates to an information providing system. More particularly, this invention relates to an information management apparatus capable of reliable management of distributed...
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6728470 |
Data recording and reproducing apparatus and method
A data recording and reproducing apparatus capable of easily obtaining information which has few dropout and is necessary for variable speed reproduction at the time of variable speed reproduction....
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6704490 |
Information recorder/reproducer
Video signals are recorded according to the number of tracks corresponding to the broadcasting system for each basic unit. When control signals are recorded on a magnetic tape in the longitudinal...
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6697891 |
Parallel read/write circuit and method for efficient storing/retrieval of data to/from a recording medium
A parallel read/write circuit for use with a plurality of transducer head assemblies and method of operation thereof. The parallel read/write circuit includes a parallel read/write cache, e.g., a...
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6631043 |
Elimination of three pass write
An apparatus and method that allow for the compatibility of data-storage disks with disk drives is provided. In an illustrative implementation, an exemplary disk drive for use on data storage disks...
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6510018 |
Magnetic recording and reproducing apparatus with electronic adjustments of interval between stationary and rotary heads
When an operator inserts a standard magnetic tape into the magnetic recording and reproducing apparatus and performs operation for bringing the apparatus into the play mode for checking X value,...
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6490107 |
Recording/reproducing apparatus having clock generating means for generating all of the required clock signals from a single reference crystal
Recording/reproducing apparatus for recording/reproducing serial information stream of A/V signals comprising packets of information signals, such as MPEG Transport Packets, on/from a recording...
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6487029 |
Hard drive with format calculator for generating sector numbers on track
Disclosed is a headerless hard drive system that includes a head-disk assembly, a servo control logic, and a format calculator. The head-disk assembly includes a set of recordable disks for storing...
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6480349 |
Disk drive employing a non-volatile semiconductor memory for storing read channel parameter calibrated for the disk drive used to recover disk channel parameter
The present invention may be regarded as a disk drive comprising a disk with a reserved sector for storing a data-sector channel parameter, and a data sector for storing data. The disk drive...
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6452990 |
Synchronous detection of wide bi-phase coded servo information for disk drive
A magnetic disk drive data storage disk defines recording tracks divided into data sectors by narrow servo spokes. A data sector lying between servo spokes is recorded with user data encoded in...
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6412058 |
Adaptive head address re-map for data storage devices
A system, method, and article of manufacture for adaptive re-mapping of head addresses in a data storage device. A logical address received by the data storage device is converted into a...
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6388831 |
Apparatus and method for limiting the reproduction of main information
The present invention relates to an information providing system. More particularly, this invention relates to an information management apparatus capable of reliable management of distributed...
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6344939 |
Digital audio channels with multilingual indication
During recording, a multilingual indication is generated when at least two of the audio channels of a digital audio signal are associated with a common program, and the multilingual indication is...
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6298194 |
Video signal reproducing apparatus connectable with printer
An apparatus for recording a video signal while forming a great number of parallel tracks on a tape-shaped recording medium, and reproducing the video signal from the track, wherein for a specified...
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6295178 |
Cassette and recording/reproducing apparatus and method using the same
A cassette houses a first and a second tape-like recording medium. The cassette is provided with a first and a second reel, at least a first tape guide provided between the first and second reels,...
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6243220 |
Apparatus for recording and reproducing an audio mode information signal corresponding to an audio mode of a multi-channel audio signal
In a recording and reproducing apparatus, a plurality of audio signal areas and audio sub-code areas for recording audio mode information of the respective areas are provided on a recording medium...
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6204981 |
Method for superimposing and detecting additional information signal, method for detecting additional information signal, device for detecting additional information signal, and device for recording information signal
An additional information f2a previously superimposed repeatedly four times with a period shorter than the decoding period of a spread information on an information signal f1a by way of spectral...
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6191900 |
Digital signal recording and reproducing apparatus and recording medium
A digital signal recording and reproducing apparatus includes a plurality of heads. A digital signal containing an information signal is recorded on a recording medium via heads among the heads...
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6188834 |
Device and method for recording and reproducing image information
A signal recording apparatus is arranged to record main information in a first area provided in each of a multiplicity of parallel tracks formed on a tape-shaped recording medium, and an index...
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6141483 |
Recording medium for recording data, reproducing apparatus for reproducing data recorded on recording medium, and data reproducing system for reproducing data recorded on recording medium via network or the like
According to this invention, in reproducing data recorded on a recording medium, reproduction of the data is limited on the basis of the distribution order, regional limitations such as different...
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6128148 |
Memory device having multiple memory regions for a recording device
An electronic memory apparatus for a device containing a recording medium for storing information. The device cooperates with a recording or reproducing instrument when said device is disposed...
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6108515 |
Interactive responsive apparatus with visual indicia, command codes, and comprehensive memory functions
An interactive conversational apparatus provides seamless uninterrupted conversational responsiveness to a variety of user inputs utilizing a storage media having a plurality of temporally related...
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6088662 |
Thermoelectric temperature sensing system in a computer hard disc drive
A temperature sensing system for use in a computer disc drive comprises a themoelectric sensor having an output sensor voltage which is variable as a function of temperature, an interface circuit...
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6009170 |
Method for appending a signal with ciphered playback mode information
A signal transmission method applicable to prevention of modification or alteration of the playback mode information, such as copying management information or charging information. The playback...
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5963384 |
Signal recording and reproducing device for transmitting and receiving data
A signal recording device is provided for transmitting recording data signals via a rotary transformer to a rotary drum having a rotary head for recording data so that control data may be...
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5960151 |
Recording and reproducing apparatus which prohibits copying of an externally supplied signal and allows unlimited copying of an internally generated signal
In an recording and reproducing apparatus which is arranged to receive a plurality of kinds of input signals and record one of the input signals as a digital signal and also to reproduce and output...
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5956305 |
Optical disk apparatus capable of simultaneously recording user data and correction codes
The present invention provides an optical disk apparatus for recording predetermined data on an optical disk having a concentric or spiral track for recording data and a plurality of sector regions...
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5940574 |
Audio and video data recording and reproduction using track ID data
A recording system adds a track identification (ID) data for identifying each of the slant tracks, in units of GOP, on a tape during the recording of compressed video and audio data. A tape...
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5938791 |
Device for detecting margin of information recording and reproducing apparatus
An information recording and reproducing apparatus provided with the maximum likelihood decoding utilizes a standard deviation of difference metrics as an estimating function for adjustment for the...
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5914827 |
Method and apparatus for implementing a noise generator in an integrated circuit disk drive read channel
A method and apparatus for implementing a noise generator in an integrated circuit read channel to optimize the performance of the signal channel. In the preferred embodiment resistors are used to...
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5909551 |
Interactive recording/reproducing medium and reproducing system
An interactive recording/reproducing medium including: image data; image reproduction control data which defines an operation instruction received from operation input apparatus and a reproduction...
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5903699 |
Apparatus for reproducing a signal from a magnetic recording medium
A signal reproducing apparatus operates on a magnetic tape on which information is recorded according to one of first, second, and third predetermined recording formats. The signal reproducing...
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