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Class Information
Number: 369/59.17
Name: Dynamic information storage or retrieval > Binary pulse train information signal > Binary signal level detecting using a reference signal
Description: Subject matter including means for detecting an amplitude of the binary signal by comparison with a threshold.










Sub-classes under this class:

Class Number Class Name Patents
369/59.18 Plural reference signals 60


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
6542451 Retrieving data from a storage device using programmable filter and equalizer Apr. 1, 2003
6483793 Restoration of data and asymmetry compensation in an optical disk reproducing system Nov. 19, 2002
6421309 Apparatus and method for detecting maximum mark lengths Jul. 16, 2002
6411580 Storing data on a medium in an optical system Jun. 25, 2002
6407970 Enhanced adaptive and selective ISI cancellation for a read channel in storage technologies Jun. 18, 2002
6353585 Apparatus and method of forming evaluation signal used in adjusting focus bias and adjusting skew of disk drive Mar. 5, 2002
6339580 Apparatus and method of forming evaluation signal used in adjusting focus bias and adjusting skew of disk drive Jan. 15, 2002
6335912 Optical information recording apparatus, method for recording optical information, optical information recording medium, optical information processing apparatus, and method for accessing opti Jan. 1, 2002
6324145 Digital data reproducing apparatus and reproduction signal binarization level correcting method Nov. 27, 2001
6295259 Method and apparatus for digitizing a signal read from a data storage medium into a binary value Sep. 25, 2001
6288992 Optical reproducing device and optical memory medium Sep. 11, 2001
6285647 Method and device for writing an optical record carrier Sep. 4, 2001
6278675 Waveform equalizer for use in a recorded information reproducing apparatus Aug. 21, 2001
6246653 Data slice circuit and data slice method Jun. 12, 2001
6243344 Optical storage device having a sector mark detecting circuit Jun. 5, 2001
6208604 Apparatus and method for optical disk reproduction Mar. 27, 2001
6205103 Enhanced adaptive and selective ISI cancellation for a read channel in storage technologies Mar. 20, 2001
6181659 Optical information recording method for optical information recording apparatus Jan. 30, 2001
6175542 Demodulation circuit, a decode circuit and a digital PLL circuit for an optical disc apparatus Jan. 16, 2001
6169716 Data slicer for an apparatus and a method for reading from and/or writing to optical recording media Jan. 2, 2001
RE36933 Disk reproduction apparatus capable of continuously varying a reproduction speed Oct. 31, 2000
6091688 Reproducing apparatus by generating slice level at header field of the optical disk Jul. 18, 2000
6091687 Method and apparatus for maximum likelihood detection Jul. 18, 2000
6034937 Optical disc reproduction method and optical disc reproduction apparatus Mar. 7, 2000
5986592 Encoder decoder device not using an A/D converter and method thereof Nov. 16, 1999
5974088 Digital data slicer Oct. 26, 1999
5920438 Programmable digital centerline tracking threshold apparatus and method Jul. 6, 1999
5878009 Disk drive including recording medium having disk operation information recorded thereon Mar. 2, 1999
5848040 Data reproducing apparatus and method Dec. 8, 1998
5831951 Method and apparatus for controlling a slice signal in the reproduction information recorded in an optical disk Nov. 3, 1998
5808979 Tracking error signal detector Sep. 15, 1998
5710750 Optical disc device Jan. 20, 1998
5706267 Method and apparatus for retrieving data from a storage device Jan. 6, 1998
5680383 Data-transition threshold following in optical recording Oct. 21, 1997
5661713 Optical information reproducing apparatus with a threshold level generator to eliminate DC level fluctuation Aug. 26, 1997
5659535 Method for retrieving data from a storage device Aug. 19, 1997
5631891 Disk reproducing circuit with automatic gain control May. 20, 1997
5629914 Data-transition threshold following in optical recording May. 13, 1997
5623479 Information recording medium having a protection film and a reading apparatus for reading out information from the information reading medium Apr. 22, 1997
5570335 Reproducing waveform correction circuit for optical information recording/reproducing system Oct. 29, 1996
5568465 Reading from record medium in either an inverted or non-inverted signal-processing mode Oct. 22, 1996
5559775 Clock detection device of information recording/reproducing apparatus and clock detection device of information recording apparatus Sep. 24, 1996
5548570 Optical reproducing circuit having, a binarized signal pulse compensation circuit Aug. 20, 1996
5508855 Tracking threshold circuit for peak detection Apr. 16, 1996
5502711 Dual digital phase locked loop clock channel for optical recording Mar. 26, 1996
5475672 Variable-length information recording with reference marks for time reference during information reading Dec. 12, 1995
5463606 Optical information reading and reproducing apparatus using pseudo DC-free codes Oct. 31, 1995
5448544 Data recording/playback apparatus and signal processing method Sep. 5, 1995
5444688 Information reproducing circuit Aug. 22, 1995
5408456 Data reproducing method and apparatus for determining the interval between pits on a recording medium from a modulated read-out signal Apr. 18, 1995

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