CN1129488A - Magnetic recording tape - Google Patents

Abstract

A magnetic tape having a pattern of magnetically polarized stripes recorded thereon. The magnetically polarized stripes are parallel to the length of the tape and are provided on at least one portion of the tape. The stripes are polarized substantially transverse to their length and are recorded to a depth sufficient to ensure that a plurality of data tracks spanning at least a portion of the width of the tape may be recorded over the stripes without significantly altering the magnetic properties of the stripes. The pattern can be used to provide information to a drive, e.g., the type of tape being used, whether the drive has reached the end of the tape, wether the tape is centered, etc. The invention also includes a magnetic head for recording the pattern.

Description

Recording tape

Invention field

The present invention relates generally to magnetic recording, relates in particular to have the recording of information tape relevant with the tape feature on it.

Background of invention

Know for people with the recording tape store information.A kind of method that writes down on this tape is to adopt a kind of read/write head, when tape during by it this read/write head rotate rapidly, thereby the data track that occupies tape part width is provided.The example of this data track comprises the data track of helical and arc

It would be desirable can provide instruction so that accuse on tape.Know relevant its interior tape characteristic of packing into of tape drive.For example, instruction can be indicated the recording density of tape, thereby driver can suitably be read on tape and/or write.When driver arrived the end of tape, instruction also can be indicated, and made that tape is reverse walks about thereby send signal to driver.

People have used several different methods that this information is provided on tape.A kind of method is that one or more hole is provided near the end of tape.But this method has shortcoming because it need use one independently sensor come sensing hole.Another shortcoming of this method is that tape has been torn in the hole, thereby has increased the possibility that tape hole peripheral part will be elongated or tear.The hole also can form " print-through " (" print-through "), when tape is wound on other layers of tape reel core and tape when being close on the hole, this phenomenon will take place, make the hole form indentation on these layers of tape, this indentation meeting weakens read/write processes.In addition, in the current implementing of this method, the method whether the detection hole exists is also unreliable.

Know for people with the recording tape store information.The method a kind of commonly used that writes down on this tape is to adopt a kind of read/write head, when tape during by it this read/write head rotate rapidly, thereby the data track vertical with the length direction of tape is provided.The example of this data track comprises the data track of helical and arc.

Brief summary of the invention

Therefore, the invention provides a kind of tape that information can be provided to a driver, the information that is provided is as the type of the tape that is using, and whether driver has arrived the end of tape, and whether tape centers, or the like.At least has a magnetic polarization striped that is parallel to the tape length direction in a part of tape, the magnetic polarization direction of this striped is substantially perpendicular to its length direction, and this strip record is in a degree of depth, and numerous data tracks that this degree of depth sufficient to guarantee occupies the part tape width at least are recorded on the striped and can seriously change the characteristic of the magnetic of striped.

Numerous recording tracks that occupy the part tape width at least can be recorded on the striped.This striped can be recorded in the one or both ends of tape.In addition, other stripeds identical with first striped are parallel to the first striped setting, and put to form a kind of striped pattern between laterally along the width of tape and first striped.

The present invention also comprises the tape with a front portion, middle part and afterbody.A magnetic pattern is arranged in the front portion of tape, another magnetic pattern is arranged at the afterbody of tape.As mentioned above, each pattern has a plurality of parallel at the magnetic polarization striped of putting between laterally on the tape width.

Two kinds of magnetic patterns are preferably different.The magnetic striped of another pattern can be arranged on the center section of tape.This pattern is preferably different with preceding two patterns and be arranged on the mid point of tape length.

Another one is parallel to the magnetic polarization striped of tape length direction with adjacent in the magnetic pattern of pattern one or both sides.

The present invention also provides a kind of information relevant tape length characteristic to offer tape drive and need not to use the reliable method of a standalone sensor, and wherein driver has the read/write head of the data in the magnetic track that occupies the part tape width on the energy read/write tape at least.As mentioned above, a kind of magnetic polarization striped of pattern is arranged on the tape.When driving tape by a read/write head, this is read the pattern on tape and translates information in the pattern.Then in due course actuator response information so that the read/write of the data on the tape.

In one embodiment, the present invention includes a kind of method of indicating driver when to arrive the end of a tape.One magnetic polarization striped or striped pattern are arranged at the two ends of tape.One or more pattern also can be set to pass through read/write head along the length direction of tape to which part of driver indication tape.

In another embodiment, the present invention includes pack into the method for the type of tape of driver such as tape length, medium type, recording density, form or the like of an indication.Driver is according to the reading/writing of information tape of tape type then.

Also in another embodiment, the present invention includes labour contractor's lateral centration in the method for tape.One magnetic polarization striped is along vertical setting of tape.Known turned position when this method comprises the turned position when determining read/write head by striped and is centered on the tape with a read/write head relatively.Read/write head makes it to center with respect to tape motion then.In another embodiment, one is parallel to second striped of first striped along tape same area setting longitudinally.Turned position when read/write head is by each striped then is centered in the known turned position of tape and compares with it.

The present invention comprises that also one has the magnetic recording head of the housing of two supporting one record gaps.Directed this gap makes record-header can be parallel to tape longitudinal recording one magnetic striped on tape, this striped basically perpendicular to tape longitudinally direction by magnetic polarization.Record-header comprises the record gap that several are put between on the housing width, so the striped of this energy logging modeization.The record gap is preferably provided by the core structure that can open and close separately, so that record-header can write down the striped of several different modes.

The present invention comprises that also one writes down a kind of method of magnetic polarization striped of medelling on tape.This method comprises provides a magnetic recording head with several core structures, each core structure has been determined a record gap, one section tape makes the width of tape be parallel to the detaching direction in each gap by the gap, and writes down the magnetic polarization striped of a medelling as mentioned above on tape.

Refer to read and/or write at this used term " read/write ".

Brief Description Of Drawings

Fig. 1 illustrates tape of the present invention.

Fig. 2 illustrates one section when a transversal scanning head detected signal and time relation figure during by the part tape among Fig. 1 of the present invention.

Fig. 3 A-3C illustrates the various magnetization of the magnetic polarization striped among Fig. 1.

Fig. 4 A-4C illustrates the signal amplitude that is produced during the striped by Fig. 3 A-3C respectively when the transversal scanning head.

Fig. 5 A-5B is illustrated in two kinds of configurations of the magnetic polarization striped on the tape among Fig. 1 of the present invention, being that the transversal scanning head centers in tape.

Fig. 6 A-6C illustrates when a transversal scanning head multiple insertion synchro angle that striped produced (insert timing angle) by Fig. 5 A during by a magnetic polarization striped of the present invention.

Fig. 7 is a synoptic diagram how signal that pattern is shown is separated from the data track signal.

Fig. 8 is the three-dimensional exploded view of a magnetic recording head that produces the magnetic polarization striped of Fig. 1.

Fig. 9 is the core structure stereographic map that is used for Fig. 8 record-header.

Figure 10 is the three-dimensional exploded view of a magnetic recording head that produces the magnetic polarization striped of Fig. 1.

Describe in detail

A tape with magnetic recording striped of the present invention as shown in Figure 1.Tape 10 is made up of front portion 12, middle part 14 and afterbody 16.There is a kind of magnetic polarization striped 20 of pattern 18 front portion 12 in its beginning.Striped 20 in pattern 18 is parallel to each other and is parallel to the length (vertically) of tape 10.Striped 20 in the plane of tape 10 with vertical with the tape length direction basically direction polarization.

One striped 22 is identical with any striped 20.Striped 22 is positioned at the pattern 18 of tape 10 front portions 12 near the side in the middle of the tape length.Striped 22 can be along the center line setting of tape 10.

There is a kind of magnetic polarization striped 20 of pattern 24 at the middle part 14 of tape 10.Pattern 24 is any in many different modes, but preferably is different from pattern 18.Pattern 24 is arranged on the center of tape 10 length, or is arranged on another position on tape 10 length.Other pattern (not shown)s can be arranged between front portion 12 and the afterbody 16 along tape 10 length.

Afterbody 16 has a kind of striped 20 of pattern 28.Pattern 28 can be any in many different modes, but preferably is different from pattern 18 and 24.In one striped 26 and the numerous stripeds 20 any one identical.Striped 26 is positioned at the pattern 28 of tape 10 afterbodys 16 near the side in the middle of the tape length.Striped 26 can be along the center line setting of tape 10.

Data track 30 occupies the partial width of tape 10 at least, and it can be helical magnetic track or arc magnetic track as shown in Figure 1.Data track 30 is preferably vertical with polarization striped 20 basically.Though not shown among Fig. 1, data track 30 can extend to the whole length of tape 10.

The curvature and the spacing between them of the data track 30 among Fig. 1 are exaggerated so that illustrate.When an are scan head (not shown) during in the motion of the Width of tape 10, the situation that tape is vertically moving during by tape except scanner head, the radius-of-curvature of its track is symmetrical in the center line of tape.This effect also is exaggerated in Fig. 1.Striped 20 is recorded in the degree of depth of tape 10, and preferably sufficient to guarantee data track 30 can be recorded on all stripeds and can seriously not change the characteristic of the magnetic of striped.

When a transversal scanning head (for example helical or arc) process magnetic polarization striped 20, whether magnetic head is read striped and is existed.When the transversal scanning head passed through striped 20, the signal that it produced can become the function of time with diagrammatic representation.Each figure is according to the pattern striped 20 that is provided and different.For example, forwardly the figure of the striped 20 of the pattern 18 on 12 is as shown in Figure 2.When magnetic head during along width by tape 10 of data track 30, magnetic head is by first striped 20, then by three middle stripeds 20, subsequently again by last striped.Therefore, the spacing of all stripeds 20 in the spacing of detected signal and the pattern 18 is corresponding shown in figure 2.

Each magnetic polarization striped 20 can be made up of a magnetic write signal, and this signal both sides of heart line therein has the two poles of the earth, north and south, as shown in Figure 3A.When signal that the transversal scanning head writes through magnetic, its produces a signal with the signal similar shown in Fig. 4 A.

In addition, striped 20 can be made up of two magnetic write signals, in each side of the center line of these two signals the two poles of the earth, north and south is arranged, and wherein two signal alignment make the polarised direction of a signal opposite with another signal, shown in Fig. 3 B.The distribution plan of this signal is seen Fig. 4 B.

In addition, each striped 20 can further be made up of adjacent magnetic write signal, shown in Fig. 3 C.This can increase the periodicity of Fig. 2 signal.The distribution plan of this signal is seen Fig. 4 C.

The model selection of striped 20 gets and can offer a tape drive (not shown) to the characteristic of relevant tape 10.Driver must be designed to discern the AD HOC of representing a particular tape characteristic.Pattern is answered long enough, makes the transversal scanning head can pass through it for several times, thereby guarantees driver recognition mode exactly.The pattern of striped preferably is recorded in a degree of depth, and this degree of depth sufficient to guarantee data track 30 can be recorded on all stripeds and can seriously not change the characteristic of the magnetic of striped.

According to a method of the present invention, a kind of pattern of striped 20 can be used to the information of the type of relevant tape 10 just in use, and for example tape length, medium type, recording density and form or the like offer driver.According to another method of the present invention, a kind of striped 20 of pattern also can be arranged on the end on tape 10 length directions, has arrived this end of tape with the indication tape drive.The striped 20 of second kind of pattern is arranged on the other end of tape 10, has arrived this other end of tape with the indication driver.The pattern of striped 20 also can be used for index, with which part on driver indication tape length by the transversal scanning head.A kind of like this pattern can be arranged on the mid point of tape, and/or several other patterns can be along the length setting of tape.

Striped 20 more than one or one also can be used in the method for the present invention, so that a transversal scanning head centers with respect to tape 10.For example, a longitudinal stripe 20 can be arranged on the centre of tape 10 width, shown in Fig. 5 A.In addition, available two stripeds 20, the distance that each root leaves the edge of tape 10 all equates, shown in Fig. 5 B.

Fig. 6 A-6C shows the present invention makes a transversal scanning head be centered in a method in the tape 10.If scanner head is an are scan device, the motor of this are scan device has a position transducer, the angle position of each sensor of this sensor monitoring on magnetic drum.Relatively the actual angle (position of rotation) of the scanner when the striped 20 among reading head detection Fig. 5 A and the needed angle in center that the scanner arc is centrally located in tape 10 just can be determined the direction of movable scan head correctly to center.

If being centered close to above the striped 20 that centers of scanner, the position angle a of magnetic drum track (drumpath) 32 will be positioned at angle a on the striped that centers greater than scanner center, shown in Fig. 6 A and 6C.Equally, if being centered close to below the striped 20 that centers of scanner, the position angle a of magnetic drum track 32 will be positioned at angle a on the striped that centers less than scanner center, shown in Fig. 6 B and 6C.

With the described tape 10 of Fig. 5 B, by use one or the striped 20 on both sides make the scanning arc be centered in tape, also can carry out one similarly relatively.Use the structure of the striped 20 of Fig. 5 B that an advantage that is better than Fig. 5 A is arranged, promptly the structure of Fig. 5 B can be used for regulating the write time, and the data that write on the tape 10 will always be cooperated with the record arc., and this time compared with the known needed time from the time that first striped, 20 to second stripeds have been spent by pre-mensuration one reading head, will produce an error signal and write clock or rotational speed with what change the scanner magnetic drum.Can adjust write time or rotational time thus, so that correct data volume cooperates with tape.

In order to make driver can read the pattern of striped 20, driver must have a filtering system that the signal that pattern produced of striped is separated from the signal that read/write goes out on data track 30.Striped 20 passes through a direct current electrographic recording in the full medium degree of depth, to produce a low frequency signal when a horizontal reading head when reading.Data track 30 is recorded in finite depth and short wavelength's signal is arranged.Therefore, must provide circuit taking out low frequency mode from short wavelength's data, thereby can detect the existence of pattern easily.

Should there be high redundancy in system, can not omitted or be translated mistakenly to guarantee pattern.Just can achieve the above object by providing along the pattern of 1 foot of tape (30.5 centimetres).If each data track 30 has the spacing of the center to center of 0.0005 inch (13 microns), 1 foot so (30.5 centimetres) long tape can be 24,000 independent read output signals and offers an opportunity.At any tape speed detectable signal all because striped on the length of striped by cross magnetization uniformly.Signal amplitude can great changes have taken place with the tape linear speed, even the linear movement of tape stops, can detect signal amplitude yet.

Fig. 7 illustrates the detection system 200 that can detect single striped 20.Detection system 200 comprises the filter system that data and noise remove from the composite signal of the pattern that rewritten by formatted data.Secondly, carry out the amplitude restricted class so that receive only than the big signal of a standard amplitude.Further limit this output by inspection then, may be misinterpreted as an effective model signal as leakage and mistake or indefinite input of disturbing with further elimination to the known repeat property of signal.One medium position or synchronous window be the operation part of this qualification also.

All synthetic read output signals that comprise low frequency mode and data-signal are filtered to remove the data frequency composition.If pattern only is made up of a striped 20, filtering system 202 can be a simple low pass filter, if pattern by a series ofly put between equidistant, the horizontal signal of longitudinal recording forms, and these signals can produce the low frequency of the limit cycle number shown in Fig. 4 D during by transversal scanning, and then filter system has narrow-band pass filter, rectifier and a low-pass filter.Compare by amplifier 204 amplifications and with a reference voltage 206 then.When surpassing reference voltage 206,, signal make the amplitude comparator 208 of general set/reset flip-flop 210 set produce a logic level true (a logic level true).An one enabling gate pulse (a start gate pulse) that is produced by synchronizing circuit 214 in the incipient stage of reading head transversal scanning tape resets trigger 210.Thereby, as long as by detecting a horizontal signal during synchronizing circuit 214 set, one readout windows (door), trigger 210 is set.Readout window can be whole width or a series of less window that occupies tape, for example, is used for detecting the horizontal signal in the district of crossing over tape.Readout window comes from the angle position scrambler on scanner head/drum motor.

If trigger 210 once was set during reading window, then trigger increases progressively a counter 218.If one phase inverter 220 and AND gate 222 do not detect a horizontal signal between window phase, counter 218 is resetted in the end of readout window.

Detect in adjacent scanning after the continuous transverse signal of a scheduled volume, counter 218 amounts to its maximum count value (for example 4), and stops by a feedback counter limiter of being made up of phase inverter 220 and AND gate 224 and to count high value.During the horizontal signal of the scheduled volume in detecting continuous sweep, useful signal is true.If do not detect a horizontal signal in one scan, and limit counting process and restart, then counter 218 resets.

This qualification method can be implemented in reaching actual logic circuit described here as shown in Figure 7, or in the firmware code (microprocessor firmware code) of microprocessor, implement, if this microprocessor has amplitude comparator output and readout window synchronizing signal.

The pattern of magnetic polarization striped 20 described here can be used to the characteristic of relevant one section tape 10 is offered a tape drive.Tape drive has the read/write head of energy read/write on horizontal data track 30.At first, one section tape 10 is placed on a magnetic recording driver, tape 10 can be placed on (not shown) in the box.Secondly, drive tape 10 by reading the transversal scanning read/write head of pattern on the tape 10.Isolate pattern the signal (if any) that is produced during then from the read/write data magnetic track.Then, synthetic low frequency signal is compared with the reference signal in being stored in drive memory, thereby driver translates the information in the pattern of being stored in.Then, driver is made the adjustment that the information that receives for response must be done.

For example, the pattern 28 of striped 20 can be used to indicate the transversal scanning head to arrive tape 10 end end longitudinally.Magnetic polarization striped 26 can be used as the caution signal to driver.When the transversal scanning head begins by warning during striped 26, drive read goes out striped and the recording storage data at storer, and these data are recorded in any side of striped.When the transversal scanning head was crossed striped 28, driver identified first end that it has arrived tape 10.Then, tape 10 changes its traffic directions, or withdraws from driver suitably the time.

Similarly, pattern 18 is used to refer to another end end that the transversal scanning head has arrived tape 10 length.As mentioned above, magnetic polarization warning striped 22 can be used as a caution signal to driver.Pattern 18 and warning striped 22 can be finished and pattern 28 and warning striped 26 identical functions, nothing but another end at tape 10.Pattern 18 preferably is different from pattern 28, like this, can make driver know that it is being which end of tape 10 in read/write just.Pattern 18 and warning striped 22 also can be used to the input point to driver indication tape, so that driver begins to write on tape.

Pattern 24 places tape 10 mid point longitudinally, to recognize tape mid point longitudinally.The position of other pattern 24 in order to further indication tape is set, for example, 1/4th and 3/4ths or 1/10th, 2/10ths or the like of tape.Each pattern 24 preferably is different from pattern 18 and 28 if present, and also different between them, thereby driver can be retrieved tape 10 vertical last privileged sites.

Other pattern such as pattern 18,24 and 28 can be used for the relevant tape type of using for example the information of tape length, medium type, recording density, form or the like offer driver.The warning striped that is similar to warning striped 22 and 26 can be arranged on any side of the striped 20 of each this pattern, so that scanner head is at the record of finishing data before expression patterns.The those of skill in the art in present technique field are understood that pattern described herein can be used to the information of other types is offered driver.

Though foregoing description of the present invention often relates to the use of striped pattern, the those of skill in the art in present technique field are understood that and are, in many cases, available one single striped replaces pattern, and this single striped can be carried special information according to the position on tape width.For example, one can indicate the beginning of tape at the single striped of the latter half of tape width, and one can indicate the afterbody of tape at the striped of tape the first half.

The method of making striped 20 is described below in conjunction with Fig. 8-10.Striped 20 can be used on the record-header 60 shown in Fig. 8 and makes.Record-header 60 is made up of upper shell 62, lower house 64 and at least one core structure 80 within reaching between two housings.Upper shell 62 and lower house 64 have front surface 66 and 68 respectively, and these surfaces are in the face of needing the tape 10 of recorded fringe 20.

Lower house 64 has several grooves 72, each groove be parallel to record-header 60 vertically, on the width of the front surface 68 of lower house, distribute.Lower house 64 also has several grooves 74, and each groove is parallel corresponding with first group of several groove 72, and distributes on the width at the rear portion of lower house.For each holds a core structure 80 to groove 72 and 74 configurations.Core structure 80 is within housing 62 and 64, and just stretch out outside the front surface 68 of lower house at the tip of each core structure.

As shown in Figure 8, tape 10 record-header 60 of passing by.By providing a plurality of core structures 80 to be recorded in a plurality of stripeds 20 on the tape 10.The spacing of striped 20 on tape 10 width can be easy to select by the groove of selecting to place them 72 and 74.Perhaps, core structure 80 can be put into each groove 72 and 74, and each core structure 80 separate cabling makes the external circuit (not shown) can open or close any one or all core structures independently.

What should give attention is, striped 20 is substantially perpendicular to vertical magnetic polarization of tape 10, and does not resemble polarization longitudinally the prior art.This finishes by the core structure 80 that describes below.

Core structure 80 is made up of C shape magnetic conductor or magnetic core 82, the coil 88, bar 86 and the pad 84 that are wound on the C shape magnetic core, as shown in Figure 9.C shape magnetic core 82 is preferably made by a high magnetic permeability, low coercive force, high magnetic saturation material such as ferro-aluminum silicon (AlFeSil) (85% iron, 9% silicon, 6% aluminium) or Ka Shi high magnetic permeability 49 alloys (Carpenter High Permeability49 Alloy) (48% nickel, 51.13% iron, 0.35% silicon, 0.50% manganese and 0.02% carbon), and these two kinds of materials can be bought from the Ka Shi metal company limited of Pennsylvania's thunder fourth.The width of C shape magnetic core 82 is preferably about 150 microns.Coil 88 by diameter be about 50 microns 150 the circle copper cash form.Preferably by making with C shape magnetic core 82 identical materials, its width d is about 150 microns to bar 86.Pad 84 is preferably made by red copper or brass, and its width b is about 19 to 51 microns.The width of pad 84 has been determined the width of the record gap of record-header 60.

The degree of depth of record-header 60 record gaps is defined as the distance between the place that front surface 68 to C shape magnetic cores 82 from lower house 64 no longer cover bar 86.

In order to make core structure 80 adjacent near placing, core structure is alternately arranged, make coil 88 respectively on the groove 72 and 74 of lower house 64 and under (by just drawing core structure shown in Figure 9 80 at an easy rate the other way around simply).This just can make core structure 80 combine very close to ground, and can not make their coil 88 phase mutual interference.

Figure 10 illustrates another embodiment of the record-header of a recorded fringe 20.Record-header 90 is made up of upper shell 92, lower house 94 and a pair of core structure 102 between two housings and within it.Upper shell 92 and lower house 94 have front surface 96 and 98 respectively, and these surfaces are in the face of needing the tape 10 of recorded fringe 20.

Core structure 102 comprises the coil 106 that is wound on C shape magnetic core 104.Core structure 102 is preferably made by aforesaid high magnetic permeability, low coercive force, high magnetic saturation material such as ferro-aluminum silicon (AlFeSil) or Ka Shi high magnetic permeability 49 alloys.Coil 106 on each core structure 102 preferably is about 50 microns 75 circle copper cash by diameter and forms.Two coils 106 are routed in together so that their magnetic field increases.

All in housing 92 and 94, most advanced and sophisticated 108 front surfaces 98 from lower house stretch out core structure 102 except that the tip 108 of each core structure.The tip 108 of core structure 102 is separated by pad 110.Pad 110 is preferably made by red copper or brass, and each tip 108 is separated from each other to about 19 to 51 microns.This size has at interval been determined the width of the record gap of record-header 90.

The width of C shape magnetic core 104 all is e.Yet the width of a C shape magnetic core 104 is comparable, and another is big.If one width in the magnetic core 104 is bigger several times than another, then the magnetic flux density at the clearance surface edge of thin C shape magnetic core will be along the magnetic flux density at the clearance surface edge of broad C shape core structure several times.Therefore, adjustable magnetic fields intensity makes and has only single magnetic track record on tape 10 that track is consistent with the clearance surface edge of thin magnetic core 104.

Another method of making striped 20 is in the direction identical with first path alternate path to be arranged in that record-header is other, at this moment, make record-header slightly on the width of tape from the first striped lateral excursion some.The striped 20 that can provide a symmetry and amplitude to increase thus.

Available one the pulsation or continuous magnetic field come recorded fringe 20.In addition, a permanent magnet can be used for writing down a striped 20, though think that writing down a plurality of stripeds with magnet on tape during the single path of tape is difficult to.

Claims (16)

1. tape (10) with two ends, it is characterized in that, tape has one to be parallel to tape magnetic polarization striped (20) longitudinally, this striped is positioned at the part (12,14,16) of tape at least, wherein to be substantially perpendicular to tape vertical for the magnetic polarization direction of striped, and strip record can be recorded on the striped at the many horizontal data tracks of sufficient to guarantee (30) and can seriously not change the degree of depth of characteristic of the magnetic of striped.

2. tape (10) with two ends, it is characterized in that, this tape has a magnetic pattern (18) on its at least one part (12,14,16), this pattern comprises that several are parallel at the magnetic polarization striped of putting between laterally on the tape width (20), it is vertical that these stripeds are parallel to tape, and wherein to be substantially perpendicular to tape vertical for the magnetic polarization direction of these stripeds.

3. tape as claimed in claim 2 is characterized in that, mode record can be recorded in the degree of depth of the characteristic of the magnetic that can seriously not change pattern on the pattern at the many data tracks (30) that occupy the part tape width at least of sufficient to guarantee.

4. tape (10) with first end (12), middle part (14) and the second end (16), it is characterized in that, first end at tape has one first magnetic pattern (18), the second end at tape has one second magnetic pattern, wherein each pattern comprises that several are parallel at the magnetic polarization striped of putting between laterally on the tape width (20), it is vertical that these stripeds are parallel to tape, and wherein to be substantially perpendicular to tape vertical for the magnetic polarization direction of these stripeds.

5. tape as claimed in claim 4, comprise that also two are parallel to the tape striped (22,26) that polarizes longitudinally, wherein the magnetic polarization direction of these stripeds is substantially perpendicular to the vertical of tape, one striped (22) is placed on the side of tape first end near first pattern at tape middle part, and another striped (26) is placed on the side of tape the second end near second pattern at tape middle part.

6. the information the characteristic of relevant one section tape (10) offers the method for a tape drive, and this driver has an energy read/write to occupy the read/write head of the magnetic track of a part of tape width (30) data at least, and the step of this method comprises:

One section tape is provided in a magnetic recording driver, wherein tape comprises that one contains the pattern (18) of coded message, this pattern is placed at least a portion (12) of tape, and comprise several be parallel to tape vertically, at the magnetic polarization striped of putting between laterally mutually on the tape width (20), wherein to be substantially perpendicular to tape vertical for the magnetic polarization direction of these stripeds;

Make tape pass through a read/write head in the driver;

Read the pattern on the tape; And

Translate the information in the pattern.

7. method as claimed in claim 6 is characterized in that, mode record can be recorded at a sufficient to guarantee data track (30) on the degree of depth of characteristic of the magnetic that can seriously not change pattern on the pattern.

8. adopt a method that can read/write occupies indication one tape (10) end in the magnetic recording driver of read/write head of magnetic track (30) data of a part of tape width at least one, its step comprises:

One section tape is provided in a magnetic recording driver, wherein tape comprise one tape first end (12) be parallel to tape longitudinally the first magnetic polarization striped (20) and tape the second end (16) be parallel to the tape second magnetic polarization striped (20) longitudinally, wherein to be substantially perpendicular to tape vertical for the magnetic polarization direction of these stripeds;

Make tape pass through a read/write head in the driver; And

Read the striped on the tape end.

9. method as claimed in claim 8, at least comprise that also one is substantially perpendicular to tape the 3rd magnetic polarization striped (20) longitudinally in tape first end, its polarised direction, the 3rd striped be parallel to first striped and on the width of tape and first striped put between laterally, thereby form the striped of one first pattern (18), this pattern comprises coded message, and the step of wherein reading striped comprises the striped of reading first pattern and translates the information of first pattern.

10. the method for the information of relevant tape (10) in a magnetic recording driver is provided, and this driver adopts an energy read/write to be provided at the read/write head of the magnetic track that occupies a part of tape width at least (30) data on the tape, and its step comprises:

One section tape is provided in a magnetic recording driver, wherein tape comprises that one contains the pattern (18) of the information of relevant tape type, this pattern comprises that several are parallel to tape vertically and at the magnetic polarization striped of putting between laterally mutually on the tape width (20), wherein the magnetic polarization direction of striped be substantially perpendicular to tape vertically;

Make tape pass through a read/write head in the driver with readout mode;

Translate the tape type information in the pattern; And

According to tape type information read/write tape.

11. one kind in a magnetic recording driver the method for a read/write head lateral centration in one section tape (10), it is characterized in that this read/write head can read/write be provided at the magnetic track that occupies a part of tape width at least (30) data on the tape, its step comprises:

One section tape is provided in a magnetic recording driver, this tape comprises the magnetic polarization striped (20) in the known location on tape width, wherein this striped is parallel to tape vertically and be placed on an end (12) of tape at least, and it is vertical that its magnetic polarization direction is substantially perpendicular to tape;

Make tape segment pass through read/write head with first striped;

When passing through first striped, read/write head determines this turned position;

The turned position of read/write head and this known turned position when being centered in tape relatively; And

Read/write head makes this head be centered in tape with respect to the tape transverse movement.

12. method as claimed in claim 11, comprise that also one is parallel to first striped, be in the second magnetic polarization striped (20) of one second known point of tape, wherein the direction of this second striped magnetic polarization is vertical perpendicular to tape, determining the step of its turned position during by first striped when read/write head has comprised when its determining the read/write head turned position during by second striped, relatively the step of read/write head turned position has comprised when first known location of its its turned position and read/write head during by first striped, second known location of its turned position and read/write head relatively and when it passes through second striped and having compared, and wherein the method for horizontal mobile read/write head is to carry out corresponding to two measurement results.

13. retrieve one section magnetic recording tape (10) with to which part of magnetic recording driver indication tape near the method for read/write head in driver, it is characterized in that, this read/write head energy read/write is provided at the magnetic track that occupies a part of tape width at least (30) data on the tape, and its step comprises:

One section tape is provided in a magnetic recording driver, wherein this tape comprises that one contains the pattern (18) that the information of one section tape is identified in retrieval, pattern comprises that several are parallel to tape vertically and at the magnetic polarization striped of putting between laterally mutually on the width of tape (20), and wherein the magnetic polarization direction of these stripeds is vertical perpendicular to tape;

Make tape pass through the interior read/write head of driver;

Translate the information in the pattern; And

Differentiate tape which partly pass through read/write head.

14. a magnetic recording head (60,90) comprising:

One has first housing (62,92) of first front surface (66,96), and its front surface is constructed to be permeable to make a tape (10) to move through this first housing, and first front surface has the width parallel with tape width with housing;

One has second housing (64,94) of second front surface (68,98), and its front surface is constructed to be permeable to make this tape motion by this second housing, and second front surface has the width parallel with tape width with housing; And

Be arranged within two housings and the magnetic devices between them (80,102), constituted magnetic recording gap (84,110) at the housing front surface, the detaching direction of its intermediate gap is parallel to the width of housing front surface, thereby record-header can be parallel to tape longitudinal recording one striped on tape, this striped be substantially perpendicular to tape longitudinally direction by magnetic polarization.

15. record-header as claimed in claim 14, it is characterized in that, magnetic devices is made up of a plurality of core structures of putting between housing width (72,74) is gone up (80), each core structure has determined that its detaching direction is parallel to the gap of housing width, thereby record-header can write down a plurality of its magnetic polarization directions and be substantially perpendicular to tape longitudinal stripe (20), and these stripeds are parallel to each other and put between on the width of tape.

16. the method in a pattern of one section tape (10) last record magnetic polarization striped (20), its step comprises:

One magnetic recording head (60) with a plurality of core structures (80) that can constitute a plurality of record gaps (84) is provided, and there is a detaching direction in each gap;

Make one section tape by the gap, make the width of tape be parallel to the detaching direction in each gap; And

A pattern (18) of record magnetic polarization striped (20) on tape, wherein each striped is parallel to the vertical of tape, and the magnetic polarization direction of each striped is substantially perpendicular to the vertical of tape.

Images