Abstract: The magnetic tape container includes a core around which a magnetic tape is wound. The magnetic tape includes a non-magnetic support, and a magnetic layer including a ferromagnetic powder. A maximum value of a deviation of a center position of an average minimum region reference circle of a trajectory of one rotation drawn by the magnetic tape, in a case where the wound magnetic tape is drawn out from the core core is 100 ?m or less for three points of the magnetic tape in a width direction.

Abstract: A method according to another embodiment includes writing data on a tape medium in a direction from a first end toward a second end of the tape medium using a tape recording apparatus. The tape recording apparatus includes a magnetic head and is configured to record data on tape media. The method further includes wrap-turning the running direction of the tape medium before reaching the second end and writing a first portion of data remaining to be written when the data remaining to be written is smaller than a volume of the data to be written in one running of the tape medium so that an end of the data is written at a position close to the first end, and writing a second portion of data remaining to be written toward the first end.

Abstract: A recording and reproducing apparatus including a reproduction unit configured to reproduce information data, which is error-correcting-coded for every N tracks, from a recording medium, wherein the information data includes moving image data which is variable-length-encoded, a recording unit configured to record moving image data on the recording medium, a detection unit configured to detect additional information from the information data reproduced by the reproduction unit, wherein the additional information indicates that the editing point, which can be set up for every frame of a predetermined number, is contained in the moving image data recorded in the N tracks, and a controller configured to control the reproduction unit to reproduce the information data by transporting the recording medium at a high-speed faster than a normal reproduction speed.

Abstract: A method for avoiding tape stiction is provided with a tape drive with a pair of motors for driving a pair of tape reels for conveying data tape across one or more read/write heads. Tachometers measure rotation of the pair of tape reels. Motion of the tape is started and rotation of the tape reels is measured by the tachometers. The measurement of the rotation of the tape reels is compared to determine if there is enough slack associated with tape stiction. The location of tape stiction is stored and weighted. Another method stops motion of the tape at a location wherein excessive tape stiction has not been detected. A tape drive is provided for performing methods for avoiding tape stiction.

Abstract: In a tape drive during a transition to a stand-by mode, a tape is wound under control of a processor (e.g., CPU) until duration of a time interval between moments when rotational positions of the reels change decreases to a pre-determined threshold. Thereafter, in the stand-by mode, the processor switches control over the tape drive to a low-power logic circuit (e.g., PLC) and enters a power-save mode.

Abstract: Disclosed is an automatic stop mechanism for a tape recorder comprising a circular member having a driving pin, a swing member hinged onto a main board of the recorder, a driving member which can make the swing member push a locking level to move transversely, and a torsion spring member configured to make the end portion of the driving arm cling to the periphery of the cam when a stop button of the tape recorder is pressed down. The automatic stop mechanism can achieve the automatic stop in every work state.

Abstract: Disclosed are a system, a method, and an article of manufacture to provide for the detection and compensation of tape breakage in a tape drive. The invention operates by simultaneously monitoring the tape reel rotation direction and the ratio of rotation between the tape reels. If the rotation direction is not the same for both reels, then tape breakage is indicated and reel rotation ceases. Tape breakage is also detected if the tape reel angular rotation ratio between the supply and take up reels is not within a specified tape reel ratio range. The tape reel angular rotation ratio is detected by simultaneously measuring the angular rotation of each tape reel in a specified time period and then calculating the ratio. The present invention detects the tape reel angular rotation ratio and if tape reel angular rotation ratio is outside of the specified tape reel ratio range, tape breakage is indicated and reel rotation ceases.

Abstract: Disclosed are a system, a method, and an article of manufacture to provide for the detection and compensation of tape breakage in a tape drive. The invention operates by simultaneously monitoring the tape reel rotation direction and the ratio of rotation between the tape reels. If the rotation direction is not the same for both reels, then tape breakage is indicated and reel rotation ceases. Tape breakage is also detected if the tape reel angular rotation ratio between the supply and take up reels is not within a specified tape reel ratio range. The tape reel angular rotation ratio is detected by simultaneously measuring the angular rotation of each tape reel in a specified time period and then calculating the ratio. The present invention detects the tape reel angular rotation ratio and if tape reel angular rotation ratio is outside of the specified tape reel ratio range, tape breakage is indicated and reel rotation ceases.

Abstract: A method to monitor the relative position of a magnetic tape disposed in a tape drive, where that tape drive includes a first tape reel motor and a second tape reel motor. The method provides a magnetic tape disposed on a first tape reel, and releaseably attaches the first tape reel to the first tape reel motor. The method further provides a second tape reel attached to the second tape reel motor. The method operates the first tape reel motor and the second tape reel motor to transfer the tape from the first tape reel onto the second tape reel while maintaining a running second reel rotation count. The method sets a second reel rotation count limit, and determines if the running second reel rotation count exceeds that second reel rotation count limit. If the running second reel rotation count exceeds the second reel rotation count limit, then the method discontinues operation of the tape reel motors.

Abstract: In a high-speed tape winding operation of a magnetic recording and reproducing apparatus, stable tape-stopping operation without generating any damages of the tape. In addition to the mechanical braking means, a reverse braking force is applied to a drive motor for rotating reels depending on the tape conditions so as to diminish the rotation inertia of the drive motor and dispense with a strict operation timing and precision of the mechanical braking means.

Abstract: A voice correspondence object featuring a sound recording medium such as a magnetic tape (2), a playback/recording head (3), an electronic device (21, 25) connected to the playback/recording head for recording sound on the recording medium, a speaker (24), a driving mechanism (4, 5, 6) for the magnetic tape and a spring (7) for moving the driving mechanism when it has been wound, and a current generator (18) powering the electronic device and driving means (5, 6) for the generator driven by the spring when the latter is wound.

Abstract: A method and apparatus in a data storage system for accessing a tape storage media, wherein the tape storage media has a first side and a second side for storing data. The tape storage media is received at a reel. The reel is rotatable in a first direction and in a second direction, and the reel is positioned proximate to a head used to access the tape storage media as the tape storage media is wound onto the reel. The reel is selectively rotated in the first direction and the second direction to selectively present the first side and the second side for access by the head.

Abstract: A tape running control method in which a tape runs between a supply reel and a take-up reel, and a rotation speed of said take-up reel is controlled by using rotation periods of said supply reel and said take-up reel, whereby a running speed of said tape is controlled. The method comprises the steps of detecting a thickness of said tape; calculating a predetermined total tape wound amount by using the detected thickness of said tape; and controlling the rotation speed of said take-up reel by using the thus-calculated total tape wound amount.

Abstract: In a tape drive in which a magnetic tape in the tape cassette loaded therein is driven and wound on a take-up reel in the tape drive, a ring cam is rotated by a mode motor and controls engagement of a supply reel motor with supply reel of the cassette and operation of a buckle to engage a take-up leader tape of the take-up reel with a supply leader tape of the magnetic tape of the cassette. The ring cam has first and second arc-shaped shielding plates at different angular positions on a circle around its rotation axis, while first and second optical switches are fixedly disposed to straddle the first and second shielding plates, respectively, to produce detection signals depending on angular position of the ring cam rotating. A control unit starts rotation of the mode motor when said cassette is loaded and then controls stop and rotation of the mode motor in response to the detection signals.

Abstract: A method and apparatus for providing linear position (LPOS) estimations. If valid LPOS data may be detected from the tape, then a first method for LPOS estimation is performed using the Hall effect sensors. If valid LPOS data may not be detected from the tape, then an error recovery procedure (ERP) is invoked so that a second method for LPOS estimation is used to provide accurate LPOS information which is synchronized to a validly detected LPOS from tape within about 1 meter prior to the desired data record.

Abstract: A recording and/or reproducing apparatus for a magnetic tape includes a supply side reel gear a takeup side reel gear, a tape guide drum about which the magnetic tape pulled out from a tape cassette is wound, a tape loading mechanism for pulling out the magnetic tape from the tape cassette and for placing it on the tape guide drum by way of tape loading and for housing it in the tape cassette by way of tape unloading, and a switching mechanism for switching the running direction of the magnetic tape pulled out from the tape cassette. This switching mechanism includes a counter gear positioned between the supply side reel gear and the takeup side reel gear during loading of the magnetic tape by the tape loading mechanism, and controls the running direction of the magnetic tape by the counter gear selectively meshing with the supply side reel gear or the takeup side reel gear after completion of the loading of the magnetic tape.

Abstract: A magnetic recording and reproducing apparatus feeds magnetic tape from a supply reel to a take-up reel driven by a motor. Sensors generate signals responsive to each revolution of the supply reel and to the rotation of the motor. An end-of-tape detector counts the number of motor-sensor signals per revolution of the supply reel, and thereby detects the approaching end of the magnetic tape, so that the motor can be slowed before the end of the tape is reached. A detection threshold may be selected or computed in advance by using information provided by a third sensor, which generates a signal responsive to each revolution of the take-up reel.

Abstract: An auto reverse mechanism in a tape recorder system having a single magnetic head for forward playback (recording) and a single magnetic head for reverse playback (recording), both mounted on a head base, comprises a select lever for selecting between forward and reverse modes, a main body plate for gear attachment, provided with a retaining groove for allowing the select lever to be manipulated in the direction of the selected mode, and a forked guide hole so formed as to permit the head base to move forward from the position of the select lever in the selected forward or reverse mode.