Abstract: A motor includes a stationary structure, and a rotor rotatable about a central axis with respect to the stationary structure. The stationary structure includes a stator including a coil, a bracket that supports the stator, and a circuit board disposed between the stator and the bracket. The bracket includes a board support that holds the circuit board between the bracket and the stator in an axial direction. The board support includes a wiring through hole that penetrates the board support in the axial direction and through which a wire extending from the circuit board passes, a lid that partially covers the wiring through hole, and a guide bridge that is located inside the wiring through hole when viewed in the axial direction and holds the wire between the lid and the guide bridge.

Abstract: A data storage device is disclosed comprising a reel that is rotated for a first interval in order to expose a first frame of a magnetic tape to a head. The head is actuated in a first and second dimensions over the magnetic tape in order to access the first frame of the magnetic tape.

Abstract: The subject of the invention is a cast part with high static mechanical strength, and for fatigue and hot creep, made of aluminum alloy of composition: Si: 3-11%, preferably 5.0-9.0% Fe<0.50%, preferably <0.30%, preferably still <0.19% or even 0.12% Cu: 2.0-5.0%, preferably 2.5-4.2%, preferably still 3.0-4.0% Mn: 0.05-0.50%, preferably 0.08-0.20% Mg: 0.10-0.25%, preferably 0.10-0.20% Zn: <0.30%, preferably <0.10% Ni: <0.30%, preferably <0.10% V: 0.05-0.19%, preferably 0.08-0.19%, preferably still 0.10-0.19% Zr: 0.05-0.25%, preferably 0.08-0.20% Ti: 0.01-0.25%, preferably 0.05-0.20% other elements <0.05% each and 0.15% in total, the rest aluminum. It more particularly relates to cylinder heads for supercharged diesel or petrol internal combustion engines.

Abstract: A deviation device for a film web has at least one deviation element, which operatively interacts with the film web at the point of deviation of the film web and guides the film web on an air cushion. The deviation element can be rotated and has a drive device, which sets the deviation element into rotation so that the peripheral speed of the deviation element differs from the transport speed of the film web.

Abstract: A system and method of manufacturing a system are disclosed. An embodiment of the system includes a first packaged component comprising a first component and a first redistribution layer (RDL) disposed on a first main surface of the first packaged component, wherein the first RDL includes first pads. The system further includes a second packaged component having a second component disposed at a first main surface of the second packaged component, the first main surface having second pads and a connection layer between the first packaged component and the second packaged component, wherein the connection layer connects a first plurality of the first pads with the second pads.

Abstract: In one general embodiment, an apparatus includes a magnetic head. The magnetic head has a first portion and a second portion, the first portion and the second portion together providing a tape bearing surface. The first portion has an opening at least partially encircling the second portion. The second portion has at least one array of transducers. A longitudinal axis of each of the at least one array is defined between opposite ends thereof. The longitudinal axis of each of the at least one array of transducers is oriented at an angle relative to a line oriented orthogonally to the intended direction of tape travel thereacross, the angle being between 0.2° and about 10°.

Abstract: A head rotator assembly (22) for dynamically compensating for a tape skew of a storage tape that moves over a head (20) in a tape drive (10) comprises a head supporter (230) that is coupled to and supports the head (20), and a supporter mover assembly (232). The supporter mover assembly (232) includes a first actuator (234A) that indirectly rotates a portion of the head supporter (230) about an axis to move the head (20) in an azimuth direction relative to the storage tape to dynamically compensate for the tape skew as the storage tape moves over the head (20). Additionally, the supporter mover assembly (232) can include a first lever (236A) moved by the first actuator (234A) to rotate the portion of the head supporter (230) so that the head (20) moves in the azimuth direction relative to the storage tape to dynamically compensate for the tape skew.

Abstract: A system and method for data storage and retrieval include a rotational head carriage unit having a plurality of heads. A tape drive unit moves a tape media length-wise across the head carriage unit while the head carriage unit rotates. The tape drive unit is adapted to use a tape comprising multiple recordable layers. The heads are adapted to read data from or write data to one recordable layer while rotating toward one edge of the tape media, and read data from or write data to another recordable layer while rotating toward the other edge of the tape media.

Abstract: A head rotator assembly for positioning a head of a tape drive relative to a storage tape that moves over the head comprises a head supporter and a supporter mover assembly. The head supporter is coupled to and supports the head. The supporter mover assembly includes a first actuator that indirectly rotates a portion of the head supporter about an axis to move the head in an azimuth direction relative to the storage tape as the storage tape moves over the head. The supporter mover assembly can further include a first lever. The first actuator moves the first lever to rotate the portion of the head supporter so that the head moves in the azimuth direction relative to the storage tape.

Abstract: A data storage and retrieval system includes a head carriage unit having multiple heads disposed at a working surface and a tape drive unit configured to move the tape past the working surface of the head carriage unit in a direction substantially parallel to a tape length. The heads are configured to write primary data tracks to or read primary data tracks from the tape as the head carriage unit rotates and the tape moves past the working surface, the primary data tracks having an arcuate shape and extending substantially along a tape width. The heads are also configured to write at least one secondary data track to or read at least one secondary data track from the tape as the head carriage unit rotates and the tape moves past the working surface, the at least one secondary data track extending substantially along the tape length.

Abstract: A head rotator assembly (22) for positioning a head (20) of a tape drive (10) relative to a storage tape includes a head supporter (230) and a supporter mover assembly (232). The head supporter (230) is coupled to and supports the head (20). The supporter mover assembly (232) selectively rotates a portion of the head supporter (230) about an axis (241) to move the head (20) in an azimuth direction relative to the storage tape as the storage tape moves over the head (20). The head rotator assembly (22) further includes a controller (16) that controls movement of the supporter mover assembly (232) based at least partially on a positioning signal. The supporter mover assembly (232) can include a first actuator (234A) and a first lever (236A). The first actuator (234A) moves the first lever (236A) to rotate the head supporter (230) so that the head (20) moves in the azimuth direction. The first actuator (234A) can include a piezoelectric element.

Abstract: A head rotator assembly (22) for positioning a head (20) of a tape drive (10) relative to a storage tape includes a head supporter (230) and a supporter mover assembly (232). The head supporter (230) is coupled to and supports the head (20). The supporter mover assembly (232) rotates a portion of the head supporter (230) about an axis (241) to move the head (20) in an azimuth direction relative to the storage tape as the storage tape moves over the head (20). The head rotator assembly (22) includes a controller (16) that controls movement of the supporter mover assembly (232) based on a positioning signal. The supporter mover assembly (232) can include a first actuator (234A) that moves a first lever (236A) to rotate the head supporter (230) to move the head (20) in the azimuth direction. The first actuator (234A) biases the first lever (236A) to rotate part of the head supporter (230) to move the head in the azimuth direction.

Abstract: A tape drive comprising a head configured to read data from a tape and to write data to the tape, a pair of flanged guide rollers arranged one on either side of the head to guide the tape longitudinally over the head, and a flangeless inertial roller arranged between a flanged guide roller and the head to add inertia to the tape so as to limit speed and movement of the tape as it passes over the head.

Abstract: A system and method for reducing tape wear in a magnetic tape system. A tape drive comprises a wrap reverse location controller. The wrap reverse location controller determines a magnetic tape reversal location. The tape drive reverses the direction of the magnetic tape at the reversal location. The wrap reverse location controller determines the tape reversal location by varying, relative to the tape heads, the longitudinal tape location at which tape direction reversals are performed at each end of the tape.

Abstract: A magnetic tape system comprises a magnetic tape, a magnetic head, a set of guides arranged to guide the magnetic tape along a tape path over the magnetic head, a first resistance mechanism, and a second resistance mechanism. The set of guides comprises a first rotatable guide positioned before the magnetic head along the tape path and including a first flyable tape path surface, and a second rotatable guide positioned after the magnetic head along the tape path and including a second flyable tape path surface. The first and second resistance mechanisms resist rotation of the first and seconds guides, respectively.

Abstract: An optical disc used for storing content includes a theft control area selected to render the disc unreadable. The disc must be exposed to radiation of a specific wavelength before it can be read by a regular device. The theft control area may include an area that contains data that instructs the device not to read the disc. This area includes a coating that changes its optical characteristics when exposed to the radiation. The material could be radiochromic or thermochromic. Alternatively, the theft control area includes an RFID device that includes an element that is radiation sensitive. In this embodiment, when the disc is irradiated, the element changes its electrical characteristics.

Abstract: In recording information, an SMPTE 339M-defined UMID buried in video and audio material signals to be recorded to a magnetic tape (30) or a UMID generated from information other than the material signals, is written to a contactless memory tag (37), whereby it is made possible to acquire a UMID for material signals recorded in the recording medium without having to actually read the material signals recorded in the recording medium and use the UMID for data search, validation, etc.

Abstract: A magnetic recording and reproduction apparatus includes a rotatable head cylinder for recording information to, and/or reproducing information from, a magnetic tape; a tape pull-out member for pulling out the magnetic tape; and a guide member for guiding the tape pull-out member. The tape pull-out member is engaged with a groove formed in the guide member. The tape pull-out member is movable between a first position and a second position along the groove. The first position is a position at which information recording to, and information reproduction from, the magnetic tape is possible. The second position is a position at which information recording to, and information reproduction from, the magnetic tape is impossible. The rotatable head cylinder is provided on a cylinder holding member integrally formed with the guide member. A profile of the groove is continuous with no gap.

Abstract: A method of manufacturing a drum assembly associated with a digital betacam video tape machine is disclosed. The method includes providing a helical scan drum assembly having a stationary upper drum, a stationary lower drum and a plurality of rotating read/write heads disposed between the stationary upper and lower drums. The rotating read/write heads reading and writing digital information to and from a tape. The method further includes inserting air grooves in the outer peripheral surface of the upper drum. The air grooves are configured to reduce sticktion between the tape and the outer peripheral surface of the upper drum when the tape is moved around the outer peripheral surface of the upper drum. The method additional includes mounting an adjustable band to the outer peripheral surface of the lower drum. The adjustable band is configured to guide the tape around the drum assembly in accordance with helical scans when the tape is moved around the outer peripheral surface of the upper drum.

Abstract: Compressed entertainment content such as audio or video or both includes additional aspects and operations associated their way. The compressed audio may be used to signal computers such as a telephone or reminder for an appointment. A melody line may be extracted from the audio, or the audio may be used exactly as it is. Another aspect stores traders within the entertainment content such as in MP3. Those traders are used to trigger the system to retrieve other parts of the content to be displayed at the same time that that particular part of the MP3 is being play. The content may include video or text, or maybe links to other content such as broadband content four times sensitive content. Another aspect describes encryption which is keyed to the disk ID to prevent playing oven illegally copied disk. Another aspect reads a specified amount of information then spins down the disk to conserve battery power.

Abstract: The present invention is to provide a magnetic tape recording/reproducing device capable of accurately positioning a magnetic tape relative to a magnetic head to thereby improve recording/reproduction characteristics to or from the magnetic tape even when the running direction of the magnetic tape is inverted between forward and reverse directions. First guide rollers are provided so as to swing between a first inclined position and a second inclined position along a tangential direction of the magnetic tape partially wound on roller portions and, where the first inclined position is such that allowing upper flanges to reside on an upstream side of the lower flanges in the tape running direction, and the second inclined position is such that allowing the upper flanges to reside on a downstream side of the lower flanges in the tape running direction. The first guide rollers are respectively provided with drive means for allowing the first guide rollers to swing between the first and second inclined positions.

Abstract: An apparatus for detecting an abnormality of a recorded signal of a recorder/player includes a plurality of recording/reproducing heads for recording/reproducing a signal onto/from a medium, and a determining portion for determining an abnormality of the recorded signal based on the signal reproduced by the recording/reproducing heads. While one recording/reproducing head records the signal of image and/or sound on the medium, the other recording/reproducing head reproduces the signal recorded by the recording/reproducing head. The determining portion determines the abnormality of the recorded signal by determining whether or not the signal reproduced from the medium is in a normal data format, or by determining whether or not an envelope of reproduced signals is greater than a predetermined level. Accordingly, when abnormality of recorded signal occurs due to a presence of foreign substances on the heads or from other problem sources, a user is immediately notified of such an abnormality.

Abstract: A thin film magnetic head, in which: a magnetic gap thereof is disposed slantingly relative to a direction orthogonal to a scanning direction of the head corresponding to an azimuth angle; an upper magnetic core layer is positioned on a leading side preceding a lower magnetic core layer in a scanning direction of the head, a protrusion on the lower magnetic core layer has an inclined side surface inclined at an angle equal to or greater than the azimuth angle at least on one side surface in a direction of a track width thereof, and at least one edge of a side adjacent to the magnetic gap of a protrusion on the upper magnetic core layer is aligned on a line drawn extending from the inclined side surface of the lower magnetic core layer, thereby suppressing occurrence of side erasing in a magnetic recording medium during azimuth recording.

Abstract: A magnetic recording and reproduction apparatus includes a rotatable head cylinder for recording information to, and/or reproducing information from, a magnetic tape; a tape pull-out member for pulling out the magnetic tape; and a guide member for guiding the tape pull-out member. The tape pull-out member is engaged with a groove formed in the guide member. The tape pull-out member is movable between a first position and a second position along the groove. The first position is a position at which information recording to, and information reproduction from, the magnetic tape is possible. The second position is a position at which information recording to, and information reproduction from, the magnetic tape is impossible. The rotatable head cylinder is provided on a cylinder holding member integrally formed with the guide member. A profile of the groove is continuous with no gap.

Abstract: A head drum device of the present invention prevents a magnetic tape (2) from clinging to the head drum device (3) due to electrostatic charge by using a carbon-containing synthetic resin as the material of an upper drum (33) in order to reduce the manufacturing cost for the upper drum. Also, setting the outside diameter of the upper drum (33) smaller than that of an intermediate drum (32) eliminates the need for a high-level of manufacturing precision in the manufacture of the upper drum (33). Thus, it is possible to reduce the manufacturing cost for the upper drum (33).

Abstract: A guide plate is provided along the respective outer periphery of rotary and fixed drums on the upstream side relative to an inlet portion where a magnetic tape starts making contact with a magnetic head on the rotary drum, an airflow attendant on the rotation of the rotary drum is stripped by a wedge-shaped edge on the guide plate and is released to the outer periphery side by a guide surface of the guide plate, and the airflow flowing in the axial direction into the space between the tape and the rotary drum is restrained by an extended portion of the guide plate. In a rotary head drum device for a magnetic recording/reproducing apparatus, formation of an excess air film near an inlet portion of the tape is restrained, and stable recording and reproducing can be achieved without raising the tape tension, thereby enhancing the life of the tape.

Abstract: An apparatus for detecting an abnormality of a recorded signal of a recorder/player includes a plurality of recording/reproducing heads for recording/reproducing a signal onto/from a medium, and a determining portion for determining an abnormality of the recorded signal based on the signal reproduced by the recording/reproducing heads. While one recording/reproducing head records the signal of image and/or sound on the medium, the other recording/reproducing head reproduces the signal recorded by the recording/reproducing head. The determining portion determines the abnormality of the recorded signal by determining whether or not the signal reproduced from the medium is in a normal data format, or by determining whether or not an envelope of reproduced signals is greater than a predetermined level. Accordingly, when abnormality of recorded signal occurs due to a presence of foreign substances on the heads or from other problem sources, a user is immediately notified of such an abnormality.

Abstract: The present invention relates to computer storage systems which have a tip (24) directed close or in contact to the storage medium (10) by which bit-writing and bit-reading is enforced. It is proposed to use a magnetizable storage medium (10), expose it to an artificial, external magnetic field H coupled externally to the storage medium, and—during bit writing—to concurrently apply heat very locally in bit size dimension in order to let the external magnetic field become locally larger than the (temperature-dependent) coercive field at the location (32) where heat is applied.

Abstract: Disclosed is a cabinet structure for a magnetic tape recorder having a rear-and-bottom structure to which a deck of the magnetic tape recorder is to be fixed. At least selected part or parts or the whole of the rear-and-bottom structure are of a sheet of metal capable of providing a shielding effect.

Abstract: A recording-reproducing mechanism in which a cassette storage portion and a cylinder are held and in which an ACE head, a cylinder motor for driving the cylinder to rotate and a loading motor for inserting and ejecting a video cassette are mounted is disposed in a chassis. A main board having a rear end located at a front side with respect to a lead cable draw-out portion of the cylinder is disposed below the recording-reproducing mechanism. The cylinder abuts on the main board and the draw-out portion is located at a side of the main board. The lead cable is drawn out from the rotary transformer and directly connected to a pattern of the main board.

Abstract: There are provided an approximately cylindrical rotary drum, a magnetic field applying means and a magnetic field detecting means that are mounted on the rotary drum, signal processing means, and a tracking control means for performing a tracking control based on tracking signals. The magnetic field applying means records an information signal on a portion of a recording track in a state that the tracking control is performed. The magnetic field detecting means detects signals from recording tracks by tracing a recording track plural times in a state that the tracking control is performed. The signal processing means reproduces an information signal by performing prescribed signal processing on the signals detected by the magnetic field detecting means.

Abstract: The present invention is to provide a magnetic tape recording/reproducing device capable of accurately positioning a magnetic tape relative to a magnetic head to thereby improve recording/reproduction characteristics to or from the magnetic tape even when the running direction of the magnetic tape is inverted between forward and reverse directions. First guide rollers are provided so as to swing between a first inclined position and a second inclined position along a tangential direction of the magnetic tape partially wound on roller portions and, where the first inclined position is such that allowing upper flanges to reside on an upstream side of the lower flanges in the tape running direction, and the second inclined position is such that allowing the upper flanges to reside on a downstream side of the lower flanges in the tape running direction. The first guide rollers are respectively provided with drive means for allowing the first guide rollers to swing between the first and second inclined positions.

Abstract: A rotating drum assembly, and a magnetic recording/reproducing apparatus including the rotating drum assembly, are provided. The rotating drum assembly comprises a cylindrical rotating drum; a magneto-resistive head installed on the rotating drum to project at least a part thereof from the outer surface of the rotating drum; and a tape-contact piece installed on the rotating drum so as to project from the outer surface of the rotating drum and to be in contact with the surface of a magnetic tape; the tape-contact piece being formed to have a larger tape-contact width than that of the magneto-resistive head and disposed to be in earlier contact with the magnetic tape than the magneto-resistive head.

Abstract: A rotary head in which the tape running load is decreased by setting the tape path cylindrical surface of an upper drum (12) in a range of winding of a tape (31) at an inner side relative to the tape path cylindrical surface of a lower drum (11). Alternatively, the tape path cylindrical surface of an inner drum (13) in a range of winding of the tape (31) is positioned at an outer side relative to the tape path cylindrical surface of the upper or lower drum.

Abstract: An assembly including at least one chip with an embedded magnetic head. A base and/or a cover includes at least partially a housing in which the at least one chip is embedded. Such an assembly may find particular application to a magnetic recording system.

Abstract: Disclosed is a cabinet structure for a magnetic tape recorder having a rear-and-bottom structure to which a deck of the magnetic tape recorder is to be fixed. At least selected part or parts or the whole of the rear-and-bottom structure are of a sheet of metal capable of providing a shielding effect.

Abstract: A mechanism chassis 1 comprises a polygonal flat plate portion 11 for arranging a plurality of mechanisms on a surface of thereof, and a plurality of side plate portions 12, 13, 14, 15 bent from the respective contour sides of the flat plate portion 11 toward a rear side of the flat plate portion 11. The flat plate portion 11 has a high-precision chassis region where those of the mechanisms of which a relatively high precision is required are to be arranged, and a high-strength chassis region where others of the mechanisms are to be arranged satisfactorily with a relatively low precision. The pair of side plate portions adjacent to each other at each corner included in the high-precision chassis region are separated from each other, and the pair of side plate portions adjacent to each other at each corner included in the high-strength chassis region are joined to each other.

Abstract: Two playback heads A1 and A2 having the same azimuth &thgr; and having a track width W11 equivalent to about 1.5 times the track width W2 of the recording head are paired to form a pair of heads. These playback heads A1 and A2 paired to form a pair of heads are arranged so as to read one recording track T1 simultaneously in the condition with a gap of about one track pitch TP in the track width direction. Data of all recording tracks are thus read correctly without tracking during playback.

Abstract: An apparatus of the present invention is a magnetic recording/reproduction apparatus for pulling out a magnetic tape from a tape cassette and winding the magnetic tape around a rotary head cylinder, having a rotary head, for a predetermined arc, for recording/reproducing the magnetic tape.

Abstract: A digital signal recording method of the present invention for recording data divided into at least two segments in a recording track on a magnetic tape with a magnetic head mounted onto a rotational drum, includes the steps of: recording a first segment; recording a preamble having a length PR in a recording track direction so that the preamble is adjacent to a front edge of the first segment; recording a postamble having a length PO in the recording track direction so that the postamble is adjacent to a back edge of the first segment; and recording a second segment after the step of recording the first segment, wherein a relation PR=PO=G is substantially satisfied where "G" is a length of a gap in the recording track direction between the first segment and the segment.

Abstract: The present invention relates to a method and apparatus for engaging a magnetic tape with a transducer at a read/write zone for achieving consistent head-to-tape coupling throughout the intended recording location, especially at the edges of the tape. The transducer, located on the end face of the rotating transducer carrier, reads and writes arcuate information tracks generally laterally across the tape. The transducer traces a substantially circular transducing path through the read/write zone with the axis of rotation corresponding substantially to the center of the transducing path. A tape support system generally adjacent to the read/write zone positions the tape so that the transducer penetrates into a tape surface along a read/write location.

Abstract: A magnetic tape recorder/reader including several magnetic heads (30-45) driven in a rotary movement at the periphery of an equatorial slot (4) of a cylindrical drum (1) on the surface of which runs a tape (7) wound helicoidally and a capacitive coupling device (20), the device being designed to transmit electrical signals between a part rotating around an axis connected to the heads and forming a rotor and a fixed part forming a stator, said device (20) including at least one coupling component (47-54, 73-80; 204; 220) comprising a mobile part (47a-54a, 73a-80a; 206; 222; 230, 232) and a fixed part (47b-54b, 73b-80b) connected respectively to the rotor and to the stator, characterized in that the mobile and fixed parts of the coupling component are made in the form of rings and/or segments of rings called coupling rings, respectively arranged in two mutually parallel planes (P.sub.1, P.sub.

Abstract: A drum base according to he invention, on which a drum of a magnetic tape recorder is mounted, comprises a substantially annular frame having a fixing surface to which the drum is fixed; at least one through hole extending through the fixing surface for allowing a screw which is to be threadably attached to a threaded hole formed in the drum to pass therethrough; and a pair of mounting surfaces provided on the fixing surface on which the drum is mounted, the mounting surfaces being located adjacent to the at least one through hole so as to have a symmetrical relationship in a circumferential direction of the annular frame with respect to the at least one through hole and within a range of a diameter dimension of the at least one through hole in a radial direction of the annular frame.

Abstract: Information signals are recorded on a magnetic tape in parallel tracks that are oriented at an angle from the direction of magnetic orientation of the magnetic tape. Two magnetic heads which perform the recording have respective gaps at azimuth angles which are unequal in magnitude and opposite to each other in polarity. The azimuth angles are selected so that respective reproduction outputs of the magnetic heads are substantially equal and crosstalk between adjacent tracks is reduced below a maximum desired level.

Abstract: An apparatus having a read/write head for reading and/or writing information on an information carrier which may be in the form of a tape or disc. The head is mounted on a drum which is supported on a shaft which axially rotates the drum so as to move the head relative to the information carrier, which in the case of a tape winds around the drum. The drum is supported in the axial direction by a thrust bearing and in the radial direction by fluid bearings (25) and (26). The thrust bearing has adjoining surfaces of which at least one is made of cemented tungsten carbine, the other possibly being of steel. Thus, there is low friction and low wear. During operation of the apparatus the bearing surfaces remain in contact, thereby forming an electrical coupling to a grounding frame of the apparatus so as to limit static charging of the rotating drum.

Abstract: A head drum for supporting a magnetic head for magnetically recording information on and reproducing information from a magnetic tape includes an inner body of an aluminum alloy, and a wear-resistant layer of a sintered powdery alloy disposed around an outer circumference of the inner body in at least a region for sliding contact with an elongate magnetic recording medium. The wear-resistant layer has a thickness of at least 0.2 um, and the sintered powdery alloy comprises a powdery alloy of 17 to 38% of Si, 0.5 to 5% of Cu, 0.3 to 5% of Mg, and the remainder of aluminum.

Abstract: A magnetic head has a head chip comprising a magnetic substance. A die-molded head base is formed from a conductive resin material, and the head base has a housing envelope for the head chip formed therein. The head chip has at least a portion thereof buried within the housing envelope.

Abstract: A tape guide system includes a rotary head drum inclined by a predetermined angle relative to a mechanical chassis of a recording and/or reproducing apparatus on which the head drum is mounted. A guide roller extends essentially vertically relative to the mechanical chassis on a side of the rotary head drum. An inclined guide post is arranged between the rotary head drum and the guide roller along a tape path. The inclined guide post is inclined at a first angle relative to the mechanical chassis. The first angle is a theoretical angle plus an additional offset angle. The offset angle lies in a direction parallel to a tape surface in contact with the side of the rotary head drum. The theoretical angle is derived from predetermined parameters including an inclination angle of the rotary head drum relative to the mechanical chassis and a tape-wrap angle at which tape is wound onto the rotary head drum.

Abstract: Featured is a magnetic drum assembly including a rotary drum supporting a magnetic head for recording/reproducing information on a magnetic tape and a stationary drum secured to a base of a magnetic recording/reproducing device. In one aspect of the invention, the stationary drum is molded from a resin material together with a metal material partially embedded and partially exposed and being secured at the exposed part of the metal to the base of the magnetic recording/ reproducing device. In another aspect of the invention, the rotary drum is molded from a resin material together with a metal material partially embedded and partially exposed and the magnetic head is secured at the exposed part of the metal of the rotary drum. Such a drum assembly is advantageous in that it is capable of maintaining an initial accuracy of its sizes and shape without deterioration in its mechanical properties over time due to creep deformation and internal stress.

Abstract: The magnetic recording/reproducing apparatus of the present invention performs a fast forward reproduction, a fast backward reproduction, a still picture reproduction and the time-lapse recording. To correct for noise-bar the magnetic heads mounted on an upper drum are deviated from intended tracks depending on a difference in tape running speed between a recording operation and a reproducing operation. This is accomplished by tilting the upper drum about a predetermined pivot point with respect to a lower drum having a lead formed thereon. A preferred reproduced image containing no noise-bar is achieved even for a signal recorded in a narrow track pattern in an extended time recording mode, by correcting a slight separation of the magnetic tape from the lead due to a tilt of the upper drum, caused by tilting the lower drum.