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Class 360/32 - CONVERTING AN ANALOG SIGNAL TO DIGITAL FORM FOR RECORDING; REPRODUCING AND RECONVERTING


Subclass of Class 360 - Dynamic magnetic information storage or retrieval
Definition: Subject matter including producing a digital equivalent
No. of patents: 714
Last issue date: 02/22/2011


1                      
NumberTitleIssue Date
7894151“Flat analog” AFE coupled with an all digital architecture compensation read channel
Reading data from a magnetic storage media with an analog front end (AFE) coupled to an all digital read channel compensation architecture. A read head passes over magnetic storage media to produce an analog signal. The analog signal is amplified such that the range...
02/22/2011
7768730Base line control electronics architecture
A read channel in that reads data from a magnetic storage media. An analog signal produced by passing a read head over magnetic storage media is amplified to match the range of an analog to digital converter (ADC) range. A baseline adjustment is performed on the amp...
08/03/2010
7400821Device 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 digital image signal for buffer storage in the memory of a program-contr...
07/15/2008
7365661Power converter circuitry and method
A control system and method for simultaneously regulating the operation of a plurality of different types of switching power converters. The system utilizes in regulating the power converters sampled data and nonlinear feedback control loops. ...
04/29/2008
7353446Cyclic redundancy check circuit for use with self-synchronous scramblers
The present invention provides a circuit for detecting and correcting errors in a bit stream. At least two logic gates receive inputs from a plurality of circuit elements. The plurality of circuit elements are coupled to receive and store a portion of a bit stream. ...
04/01/2008
7349312Method and apparatus for performing blank detection on an optical storage disc
A method for performing blank detection on an optical storage disc includes buffering first information read by an optical storage device from the optical storage disc to generate buffered data, and checking corresponding data of an Error Correction Code (ECC) block...
03/25/2008
7328148Transferring 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 to compressed real time data in frames, and determining a buffer occu...
02/05/2008
7310276Memory device and method having data path with multiple prefetch I/O configurations
A memory device is operable in either a high mode or a low speed mode. In either mode 32 bits of data from each of two memory arrays are prefetched into respective sets of 32 flip-flops. In the high-speed mode, the prefetched data bits are transferred in parallel to...
12/18/2007
7296063Active stream format for holding multiple media streams
An active stream format is defined and adopted for a logical structure that encapsulates multiple data streams. The data streams may be of different media. The data of the data streams is partitioned into packets that are suitable for transmission over a transport m...
11/13/2007
7283011Method for performing dual phase pulse modulation
A modulation method, referred to as dual phase pulse modulation (DPPM), represents digital data as a series of high and low pulses whose widths represent groups of M data bits, with both the high and low pulses representing successive M-bit groups. Each of the 2
10/16/2007
7260151Dual phase pulse modulation system
A system configured to transmit and receive data signals over a data link in serial fashion using dual phase pulse modulation (DPPM) is described. The data link may be, for example, a one or two wire unshielded twisted pair (UTP) cable. An exemplary system includes ...
08/21/2007
7259926Digital information recording/reproducing apparatus
A transmitting apparatus and method for transmitting a digital signal in which a time-base compressor compresses the digital signal, a bit compressor compresses the time-base compressed signal from the time-base so that a transmission rate of the time-base compresse...
08/21/2007
7257135Method and apparatus for generating information signal to be recorded
A compressively-encoding-resultant video signal resulting from compressively encoding a video signal, a first compressively-encoding-resultant audio signal resulting from compressively encoding a first audio signal having a synchronized relation with the video signa...
08/14/2007
7254172Filter control for varying data rate communication channels
Processing circuitry includes an analog filter and filter control circuitry and processes an analog signal having a varying data rate. The analog filter filters the analog signal based on a transfer characteristic to transfer a filtered signal. The filter control ci...
08/07/2007
7242857Motor control circuit
A motor control circuit includes a pulse width modulation (PWM) signal generating circuit, a driving circuit and a waveform-shaping circuit connected between the PWM signal generating circuit and the driving circuit. The PWM signal generating circuit generates a squ...
07/10/2007
7240143Data access and address translation for retrieval of data amongst multiple interconnected access nodes
A low-latency storage memory system is built from multiple memory units such as high-density random access memory. Multiple access ports provide access to memory units and send the resultant data out interface ports. The memory units communicate with the access port...
07/03/2007
7233271Noise shaper circuit and method for reducing switching noise
Noise that is normally generated during the switching of a noise shaper may be reduced by switching the noise shaper to an inactive or off state after the occurrence of one or more predetermined criteria, for example the detection of a predetermined number of data v...
06/19/2007
7227709System 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 not be made with tight tolerances, a DC signal can be fed into the D...
06/05/2007
7224838Method and apparatus for recovery of encoded data using central value
The present invention provides a method for comprising data by determining a central value that is greater than the minimum value and less than the maximum value of the range of data. In one embodiment, the central value is chosen to be a value that substantially re...
05/29/2007
7218738Encryption and content control in a digital broadcast system
A selective encryption encoder has a packet identifier that identifies packets of a specified packet type forming a part of a program. A packet duplicator duplicates the identified packets to produce first and second sets of the identified packets. A PMT (program ma...
05/15/2007
7218846Fan speed control circuit
A fan speed control circuit includes a pulse width modulation (PWM) signal generating circuit, a driving circuit and a phase compensation unit. The PWM signal generating circuit generates a PWM control signal with a sequence of alternating on-time and off-time, and ...
05/15/2007
7209565Decoding of an encoded wideband digital audio signal in a transmission system for transmitting and receiving such signal
Reproduction accuracy of a digital signal, representing for example stereo audio signals, is improved by transmitting sample data which have been encoded to form transmission signals. The transmission signals are arranged in consecutive frames, each frame including ...
04/24/2007
7206502Apparatus and method for recording and reproducing digital data
An apparatus for recording and reproducing digital data, which is capable of recording digital broadcast data while reproducing previously-recorded digital broadcast data is provided. An apparatus 10 for recording and reproducing digital data, which is capabl...
04/17/2007
7203317System for enabling lazy-revocation through recursive key generation
A plurality of users may have access to a file. The file is encrypted with a key. Access for a user to the file is revoked. A new key is generated from the current key of the file in response to said revocation, and the file is encrypted with the new key. ...
04/10/2007
7199956Disk 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 information that provides servo timing and head position information, installi...
04/03/2007
7200747System for ensuring data privacy and user differentiation in a distributed file system
A security module is configured to provide an owner the capability to differentiate between users. In particular, the security module is configured to generate an asymmetric read/write key pair for respectively decrypting/encrypting data for storage on a disk. The o...
04/03/2007
7197454Audio coding
Coding of an audio signal is provided where the coded bitstream semantics and syntax are not related to a specific sampling frequency. Thus, all bitstream parameters required to regenerate the audio signal, including implicit parameters like frame length, are relate...
03/27/2007
7190884Signal recording apparatus and method, signal reproducing apparatus and method, medium, and information assembly
A signal recording apparatus includes a quantizer for quantizing a signal employing a quantization step. The apparatus further includes a quantization information creator for creating plural pieces of quantization information to specify the quantization step, an enc...
03/13/2007
7181125Video storage type communication device
A device which is capable of storing moving picture data received from each terminal and providing each terminal with video information to be reproducible by rapidly forwarding or reversing at any desired speed independent of usable terminals. A video storage type c...
02/20/2007
7161887Method and apparatus for extracting digital data from a medium
A computer-implemented method and apparatus for extracting digital data from a medium. Digital audio extraction techniques are implemented with additional features that improve the quality of the resulting audio playback files. In one embodiment of the invention, a ...
01/09/2007
7158333Up-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 field wherein the resulting signal is a substantially sinusoidal posit...
01/02/2007
7152785Patient-centric data acquisition protocol selection and identification tags therefor
Patient-centric data acquisition protocol selection systems and methods, and identification tags therefor, are described. Embodiments comprise a patient-centric data acquisition protocol selection system comprising: a programmable identification tag capable of allow...
12/26/2006
7151707Memory device and method having data path with multiple prefetch I/O configurations
A memory device is operable in either a high mode or a low speed mode. In either mode, 32 bits of data from each of two memory arrays are prefetched into respective sets of 32 flip-flops. In the high-speed mode, the prefetched data bits are transferred in parallel t...
12/19/2006
7142140Auto scanning ADC for DPWM
A system for monitoring interrupts to a processor includes a multiplexer having a plurality of inputs connected to receive various analog inputs. The multiplexer further has an output which is programmably connected to one of the plurality of inputs responsive to a ...
11/28/2006
7127537Method and apparatus for pre-processing in a common-format control processing input signals of, or output signals for, interfaces of different type
In audio processing technology there are interfaces of different type, the different interface types being associated with differing sample clock frequencies and/or differing data frame or data word formats. In some applications it is desired do process audio signal...
10/24/2006
7111019Data warehouse system and query processing method used in the system, and data collecting method and apparatus for the method, and charging method and apparatus in the system
In order to realize a practical data warehouse system with the use of a network in a distributed environment, for example, data collectors (101 and 102) for creating/managing each replica of server data for clients (103 and 104) as shown ...
09/19/2006
7106672Method and apparatus for using a frequency difference to adjust a target bit for bit counting
A method and apparatus for normalized bit counting is described. The method comprising incrementing a bit counter using a first clock, and adjusting a target bit based on a difference in frequency between the first clock and a second clock. The method further compri...
09/12/2006
7103110Dual phase pulse modulation encoder circuit
An dual phase pulse modulation (DPPM) encoder circuit converts data into a series of high and low signal pulses, each of whose time durations or pulse widths represents a group of M data bits, with the alternating high and low pulses representing successive groups. ...
09/05/2006
7098832Image processing method and analog front end circuit
An image processing method and analog front end circuit are described. An analog signal is converted to digital form to obtain a digital signal by increasing a conversion resolution value of an analog-to-digital converter module. The digital signal is subsequently a...
08/29/2006
7092462Asynchronous 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 recording medium and generated by an A/D converter at a symbol rate, and ...
08/15/2006
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