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Match Document Document Title
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...
7328148 Transferring compressed audio via a playback buffer  
A method for transferring real time information on a record carrier, typically bitstream audio on an optical disc, which method comprises encoding consecutive segments of the real time information...
7227709 System and method for providing head amplitude characterization  
To calibrate the VGA of a read head, test signals from a DAC are input to the VGA and the output of the VGA is observed, with the gain of the VGA being adjusted as appropriate. So that the DAC need...
7199956 Disk drive self-servo writing using fundamental and higher harmonics of a printed reference pattern  
Disk drive self-servo writing includes transferring a reference pattern by magnetic printing onto a reference disk, wherein the resulting printed reference pattern includes embedded servo...
7158333 Up-sampled filtering for servo demodulation  
An apparatus, method, and system for providing a fine adjustment for transducing head positioning in a hard disk drive (HDD). The apparatus, method, and system include reading a positioning error...
7092462 Asynchronous servo RRO detection employing interpolation  
A repeatable read-out (RRO) detector employs one or more digital interpolators to interpolate asynchronous sample values that represent RRO data. The asynchronous sample values are read from a...
7065291 Method of processing data packets, and video recording/playback apparatus incorporating the method  
In a video recording/playback apparatus, when recording a series of packets transmitted over an IEEE 1394 bus, a relative value is taken between a requested time of arrival written in a header...
7050704 Method for storing and retrieving digital data to/from a tape recording medium through a digital interface  
A method for enabling a magnetic recording medium such as a digital video cassette tape of a digital video tape recorder to be used as an auxiliary storage device of a personal computer (PC) which...
7047436 Digital microelectronic circuit with a clocked data-processing unit and a converting unit  
A digital microelectronic circuit comprises a clocked data-processing unit ( 1 ) and a converting unit ( 2 ) which reads in data present at the output of the data-processing unit, performs a...
7027718 Packet data recording/reproducing system  
A packet recording/reproducing system is provided which records or reproduces packets on or from tracks formed in time sequence on a magnetic tape. In a recording operation, the packet...
7027245 Apparatus for providing head amplitude characterization using gain loops  
An apparatus for providing head amplitude characterization using gain loops is disclosed. A variable gain amplifier (VGA) receiving input signals and generates a VGA output signal. A...
7027243 Apparatus for providing head amplitude characterization  
An apparatus for providing head amplitude characterization is disclosed. A DAC is used to apply known signals to a variable gain amplifier in the front end of a read channel. The signal is...
7027239 Data acquisition system  
A data acquisition apparatus acquires an analog input signal from an analog sensor, and generates digital data based on the analog input signal for processing by a personal computing apparatus. The...
7020834 Circuit and signal encoding method for reducing the number of serial ATA external PHY signals  
A Circuit for reducing the number of serial ATA external PHY signals includes: a serializer/deserializer, connected to a storage medium controller through a set of parallel signal transmitting...
7006760 Processing digital data having variable packet lengths  
When macro blocks each of which has a variable length are input for one picture, null syncs each of which has a unit length are generated corresponding to the format of the video data to be...
6987817 Digital clock recovery PLL  
An apparatus comprising an analog circuit and a digital circuit. The analog circuit may be configured to generate a plurality of samples of an input signal in response to a plurality of phases of a...
6985320 Method and apparatus for encoding data to guarantee isolated transitions in a magnetic recording system  
Provided is a method, system, and program for storing input groups of uncoded binary data on a storage medium. A plurality of uncoded data blocks in a data stream are received. An encoded data...
6978080 Video switcher  
A video switching apparatus in which an operating mode (recording/reproduction) of a recording/reproducing apparatus is discriminated from a video output signal of the recording/reproducing...
6977975 Digital clock recovery PPL  
An apparatus comprising an analog circuit, a first digital circuit, and a second digital circuit. The analog circuit may be configured to generate a plurality of samples of an input signal in...
6957181 Transferring compressed audio via a playback buffer  
A method for transferring real time information on a record carrier, typically bitstream audio on an optical disc, which method comprises encoding consecutive segments of the real time information...
6952315 Digital information recording/reproducing apparatus  
A digital signal recording/reproducing apparatus having a mode for recording a compressed input signal on a recording medium and a mode for recording a non-compressed input signal on the recording...
6922297 Double-attribute method of encoding and decoding magnetic data  
A method of encoding and decoding data involving the simultaneous application of pulse width modulation and pulse position modulation systems to data intended for storage on a magnetic disk medium.
6859903 Detection unit, device for reproducing an information carrier and method for detecting  
Bits in a first binary signal are compared with one or more first binary patterns. For each first binary patterns, if the comparison meets a predetermined criteria for the first binary pattern,...
6819512 Triple-attribute method of encoding and decoding magnetic data  
A method of encoding and decoding data involving the simultaneous application of pulse amplitude modulation, pulse width modulation, and pulse position modulation systems to data intended for...
6807366 Data recording apparatus, data recording/reproducing apparatus, data recording method, and data recording/reproducing method  
The invention relates to a data recording apparatus in which a shuffling process for enabling a reproduced image to be easily seen in a high speed reproducing mode of a digital VTR is performed to...
6792198 Method and apparatus for recording digital data streams and management information  
Method and apparatus for recording digital data transport stream units such as application packets in sectors of a disk type recording medium such as a digital versatile disk and create and record...
6788877 Recording and reproducing apparatus  
A recording and reproducing apparatus includes a recording block for recording, on a recording medium, image data and error information indicative of presence or absence of any error in the image...
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...
6781776 Magnetic card reader and magnetic data reproduction method using signal peak point intervals  
A magnetic card reader for causing a magnetic card to make a move relative to a magnetic head and reproducing data on the magnetic card by the magnetic head, said magnetic card reader includes an...
6735028 Method and apparatus for increasing data storage capacity via phase and amplitude modulation  
The capacity and realized data rate of a data storage medium is increased by storing multiple bits per symbol using digital modulation techniques. Both phase and amplitude modulation techniques can...
6721487 Magnetic recording method and apparatus for digital signals, magnetic reproducing method and apparatus for digital signals and tape-shaped recording medium  
A recording apparatus for digital signals which effectively utilizes production equipments or components for a magnetic tape to assure long-time recording of high-quality signals on the magnetic...
6710955 Method and apparatus for converting an analog audio source into a digital format  
An apparatus and method for converting and improving an existing analog audio recording as it is converted into a digital format with reliable tone detection and interpretation. Specifically, the...
6691203 Integrated controller to process both optical reads and optical writes of multiple optical media  
The present invention provides an integrated controller to process both optical reads and optical writes of multiple optical media. The integrated controller includes a host interface; a buffer...
6671112 Semiconductor integrated circuit device  
A digital arithmetic operation circuit includes a plurality of arithmetic operation blocks, a control signal generator and a selector. The plurality of arithmetic operation blocks receive a...
6661590 Efficient analog front end for a read/write channel of a hard disk drive running from a highly regulated power supply  
A method and apparatus for running an analog portion ( 162 ) of a read/write channel ( 108 ) from a highly regulated power supply ( 260 ). The apparatus includes an analog portion ( 162 ), a clock...
6654191 Restoration of hard disk drive readback signal in the presence of thermal modulation  
A magnetoresistive (MR) head of a hard disk drive provides a readback signal from a data storage disk. The readback signal is high pass filtered, amplified, sampled and digitized to obtain a...
6654189 Digital-signal processing apparatus capable of adjusting the amplitude of a digital signal  
The invention relates to a digital-signal processing apparatus for playing back a digital signal recorded on a recording medium, wherein the digital signal is recorded onto the recording medium by...
6587291 Asynchronously sampling wide bi-phase codes  
Sampling data with wide bi-phase code symbols includes sampling a wide bi-phase code symbol in the data a number (N) of times to produce samples of data, selecting a subset of the samples,...
6583942 Method and apparatus for determining equalized signal-to-noise ratio in a storage device  
A method and data storage device determine an equalized signal-to-noise ratio in the storage device. The equalized signal-to-noise ratio is determined by generating an analog read signal, passing...
6574059 General purpose digital read channel architecture  
A circuit and a method of operation for detecting a bit sequence from an analog waveform representing the bit sequence and at least one other parameter associated with the analog waveform are...
6570722 Magnetic card reader and magnetic data reproduction method using signal peak point intervals  
A magnetic card reader for causing a magnetic card to make a move relative to a magnetic head and reproducing data on the magnetic card by the magnetic head, said magnetic card reader includes an...
6538831 Method and apparatus for using recording and reading medical information and image information with digital audiotape  
An apparatus for recording and reproduction of medical information comprises an input/output unit for inputting and outputting personal medical history information of individual patients, a...
6522831 Reproducing apparatus  
A reproducing apparatus for reproducing digital data from a recording medium, the digital data including information data and ID data of the information data. The reproducing apparatus checks the...
6522489 Efficient analog-to-digital converter for digital systems  
An analog-to-digital converter 16 includes first and second analog-to-digital converters 22 and 24 both of which receive an input signal. The first analog-to-digital converter 22 is...
6510013 Phase-synchronization method and circuit for establishing a phase-synchronization for signals with reduced time  
A phase-synchronizing circuit includes a phase error detection circuit detecting a phase-error in a given clock signal and producing an output indicative of the phase-error as a first phase-error...
6490109 Data storage device  
There is provided a data storage device concurrently allowing storage of data that can be reproduced in higher quality and storage of data that can be used also in a data transmission path with a...
6477313 Disc control method and disc control unit  
A video/audio data coding circuit receives video/audio signals and compresses and multiplexes them. A recording signal processing circuit shuffles the audio/video data, adds ECCs, and codes them...
6476990 General purpose digital read channel architecture  
A circuit and a method of operation for detecting a bit sequence from an analog waveform representing the bit sequence and at least one other parameter associated with the analog waveform are...
6463208 Optical disc reproducing apparatus and method  
The optical disk reproducing apparatus and method reproduce data from an optical disk, and an error correction circuit included therein error corrects the reproduced data in data blocks of...
6438715 Trace operations in an integrated circuit for a disk drive  
The invention includes a drive control integrated circuit with an intelligent and efficient tracing capability. The drive control integrated circuit executes operating instructions grouped into...
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