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Class Information
Number: 360/77.15
Name: Dynamic magnetic information storage or retrieval > Automatic control of a recorder mechanism > Controlling the head > Track centering > Elongated web carrier (i.e., tape) > Transverse scan path > By pilot signal > Plural pilot signals along single transverse path
Description: Subject matter wherein multiple reference signals recorded along a transverse track on the record carrier are used to control the motion of the transducer head.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7453665 |
Method of adjusting magnetic head of magnetic tape recording and reproducing apparatus and magnetic tape recording and reproducing apparatus |
Nov. 18, 2008 |
| 7130147 |
Magnetic recording/reproducing apparatus |
Oct. 31, 2006 |
| 6671455 |
Magnetic recording apparatus and method therefor, and magnetic recording and reproduction apparatus and method therefor |
Dec. 30, 2003 |
| 6512651 |
Helical scan tape track following |
Jan. 28, 2003 |
| 6266204 |
Tracking controller for a tape-like recording medium |
Jul. 24, 2001 |
| 6263148 |
Variable-mode information signal reproduction apparatus with tracking control |
Jul. 17, 2001 |
| 6185062 |
Tracking controller for a tape-like recording medium |
Feb. 6, 2001 |
| 6172835 |
Tracking controller for a tape-like recording medium |
Jan. 9, 2001 |
| 6094319 |
Method and apparatus for tracking a helical track recording |
Jul. 25, 2000 |
| 6078459 |
Tracking controller for a tape-like recording medium |
Jun. 20, 2000 |
| 6005741 |
Reproducing apparatus using pilot signal crosstalk for tracking control and using pilot signals to eliminate a back lock condition |
Dec. 21, 1999 |
| 5982574 |
Automatic tracking frequency servo demodulation technique for DVCR applications |
Nov. 9, 1999 |
| 5936791 |
Helical scan data recording and playback method and apparatus wherein reference helical tracks preceding data recording area on magnetic tape are played back before recording or playback of ta |
Aug. 10, 1999 |
| 5875065 |
Information recording reproducing apparatus using pilot signals to correct tracking error |
Feb. 23, 1999 |
| 5870244 |
Magnetic recording/reproduction apparatus and method for adjusting head height therein |
Feb. 9, 1999 |
| 5862293 |
Tracking control for digital signal reproducing and after-recording apparatus and method |
Jan. 19, 1999 |
| 5751890 |
Magnetic type recording and reproducing apparatus |
May. 12, 1998 |
| 5739973 |
Apparatus for recording a mixed video and tracking signal on a magnetic recording medium |
Apr. 14, 1998 |
| 5737146 |
Data recording and playback apparatus using a helical scan system with magnetic head for recording and playing back pattern signal for tracking in tracking area within helical track |
Apr. 7, 1998 |
| 5623380 |
Circuit and method for controlling head tracking based on an average of reproduced pilot signals from each recording unit |
Apr. 22, 1997 |
| 5502603 |
Rotating head type recording/reproducing apparatus which uses wide recording heads to record a single pilot signal over three tracks and preventing overwriting of the pilot signal by the next |
Mar. 26, 1996 |
| 5488520 |
Data recording and playback apparatus using helical scan system with magnetic head for recording and playing back pattern signal for tracking in tracking area within helical track |
Jan. 30, 1996 |
| 5432655 |
Multiple channel magnetic recording and reproducing apparatus |
Jul. 11, 1995 |
| 5430583 |
Magnetic recording and/or reproducing apparatus |
Jul. 4, 1995 |
| 5416651 |
Apparatus for magnetically recording digital data |
May. 16, 1995 |
| 5412520 |
Tracking control which avoids lock-up for rotary head reproducing apparatus and which senses whether a trucking control signal is absent for a predetermined time |
May. 2, 1995 |
| 5402281 |
Tracking control apparatus of rotary head type recording unit using pilot signals of different frequencies and different formats |
Mar. 28, 1995 |
| 5383071 |
Apparatus for tracking control using recorded pilot signals |
Jan. 17, 1995 |
| 5353173 |
Device of controlling head-drum angle and method therefor |
Oct. 4, 1994 |
| 5335122 |
Automatic track locking state check circuit |
Aug. 2, 1994 |
| 5317457 |
Digital signal recording method |
May. 31, 1994 |
| 5315457 |
Magnetic recording apparatus with pilot signal recorded in successive tracks with changing pilot frequency |
May. 24, 1994 |
| 5296976 |
Magnetic recording/reproducing device |
Mar. 22, 1994 |
| 5280399 |
Video signal recording apparatus |
Jan. 18, 1994 |
| 5272572 |
Apparatus and method for use in appending data to data previously written on a tape in a helical scan tape recorder system |
Dec. 21, 1993 |
| 5258879 |
Tracking error detection circuit of magnetic recording and reproduction apparatus for determining tracking error based on pilot signals recorded on a recording meedium |
Nov. 2, 1993 |
| 5253130 |
Head track alignment arrangement in a magnetic tape recorder |
Oct. 12, 1993 |
| 5251079 |
Tracking control circuit including gain correction control |
Oct. 5, 1993 |
| 5233488 |
Method and apparatus for detecting tracking errors |
Aug. 3, 1993 |
| 5229891 |
Tracking control system using single frequency pilot signal |
Jul. 20, 1993 |
| 5191491 |
Method and apparatus for reading distorted helical stripes |
Mar. 2, 1993 |
| 5182681 |
Rotating head magnetic recording and reproducing device having automatic tracking control function |
Jan. 26, 1993 |
| 5159500 |
Magnetic tape recording of reproducing apparatus with recorded channel indicator |
Oct. 27, 1992 |
| 5148331 |
Rotary head type recording and reproducing apparatus for information and additional codes |
Sep. 15, 1992 |
| 5126892 |
Rotating head type reproducing apparatus for reproducing an information signal from a record bearing medium having many parallel recording tracks and pilot signals of different frequencies |
Jun. 30, 1992 |
| 5119249 |
Tracking error detection circuit using pilot signals during tape reproduction |
Jun. 2, 1992 |
| 5109305 |
Four head sequential switch scanning type magnetic recording/reproducing apparatus |
Apr. 28, 1992 |
| 5084786 |
Magnetic tape memory apparatus with axially displaced heads enabling after recording and verification |
Jan. 28, 1992 |
| 5060092 |
Magnetic recording with split track tracking signals |
Oct. 22, 1991 |
| 5055952 |
Automatic track finding (ATF) controller for digital audio tape recorder |
Oct. 8, 1991 |
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