CN1111785A - Tape position indicator for multi-track serpentine recording - Google Patents
Tape position indicator for multi-track serpentine recording Download PDFInfo
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- CN1111785A CN1111785A CN94116421A CN94116421A CN1111785A CN 1111785 A CN1111785 A CN 1111785A CN 94116421 A CN94116421 A CN 94116421A CN 94116421 A CN94116421 A CN 94116421A CN 1111785 A CN1111785 A CN 1111785A
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- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 title description 2
- 239000003550 marker Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000008569 process Effects 0.000 claims abstract description 20
- 230000000007 visual effect Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 2
- 208000036829 Device dislocation Diseases 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004304 visual acuity Effects 0.000 description 3
- 241001269238 Data Species 0.000 description 2
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- 238000010168 coupling process Methods 0.000 description 1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/34—Indicating arrangements
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
- G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
- G11B5/00847—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks
- G11B5/0086—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks using cyclically driven heads providing segmented tracks
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
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- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
The invention provides an indicating device. Even if a magnetic tape is divided into a plurality of logic blocks, the magnetic tape can be also used in the monitoring work, and a sneak-shaped magnetic tape can be moved in a magnetic tape device with a plurality of magnetic track groups. The indicating device comprises bar charts, and each bar chart represents a magnetic track group. During the magnetic tape access operation process, a moving marker on the first bar chart represents that the magnetic tape is moved along one direction after passing through a magnetic head, and the bar charts are filled from a first end to a second end. After the first magnetic track group is read or recorded, the magnetic tape is rotated oppositely, and when the second bar chart is returned to the first end from the second end, the moving marker is displayed on the second bar chart.
Description
The present invention relates to the multitrack tape device, specifically relate to the visual surveillance of tape location in each tape operating process.
The needs that increase data recording on tape memory capacity have caused the generation of multitrack tape device, and this device is being divided on the tape of a plurality of parallel magnetic track records also sense information therefrom of recorded information.The further increase of memory capacity causes the narrow magnetic track record number of tape to increase.The needs that increase data throughout and efficient cause the appearance of snakelike recording technique, this technology tape when a direction transmits with data recording to a track part on (or one group track part on).When arriving end of tape, the counter-rotating of tape direction, data are recorded on second track part (or track part group).Till this process lasts till when not having data or magnetic recording to reach its capacity more always.In a kind of snakelike writing-method, magnetic head is switched under the control of head position regulator (actuator) with across the track part in the magnetic tape access different track group.
Often need the operating personnel of magnetic tape equipment to monitor the process that reading and writing, location and rewinding are operated.When the tape location that monitors along a single direction access one single track part or track part group; owing to concern one to one between tape location and used GB on Tape; install relatively very directly, and owing to there is not so one to one relation in the snakelike recording technique, it is complicated that this supervision has just become.
In view of the above, the objective of the invention is to make the operating personnel of multitrack tape drive unit can the reading and writing of visual surveillance tape, the process of location and rewinding operation.
Another object of the present invention is to make operating personnel estimate to give over to finish the time that reading and writing, location and rewinding are operated.
A further object of the present invention is operating personnel to be observed used what of tape total memory capacity.
A further object of the invention is to make when adopting snakelike recording technique to carry out such supervision and observation.
The present invention shows that by a tape location is provided device realizes these purposes and other purpose.This indicator is included in a plurality of bar charts that extend between its first and second relative limit.Each bar chart is represented a track part group that has a plurality of parallel track parts on the tape; The beginning and the end of tape represented on first and second limits respectively.This indicator also comprises the tick lables device that can move along at least one selected bar chart and is used for responding the display controller that move come control position marker move of tape between first and second tape reels.
In the process of magnetic tape access operation (as reading or writing), the marker that moves on first bar chart represent tape by magnetic head mobile along a direction, bar chart from first end " filling " to second end.Run through or write down after the first track part group, the proceed backward magnetic tape direction, mobile marker is presented on second bar chart, and bar chart is filled from the reflection of second end and is got back to first end.The process that access track part group also is full of bar chart simultaneously lasts till till the access of finishing tape.Even when tape comprised a plurality of logical block, by use target and logical block marker (in case of necessity) on bar chart, indicator also can monitor rewinding, location (F.F.) and quick access operation by similar manner.
The features and advantages of the present invention of the above and other can be clear that from following most preferred embodiment of the present invention is more specifically described, as shown in drawings.
Fig. 1 is the block diagram that the multitrack tape device of tape position indicator of the present invention is housed;
Fig. 2 illustrates that magnetic head is positioned with the data track part group on the access multitrack tape;
The of the present invention tape position indicator of Fig. 3 A-3F explanation in a data access operation;
The embodiment of the of the present invention tape position indicator of Fig. 4 A-4C explanation in the rewinding operation;
The embodiment of the of the present invention tape position indicator of Fig. 5 A-5C explanation in a logical block positioning action process;
The of the present invention tape position indicator additional embodiments of Fig. 6 A-6C explanation in a logical block positioning action;
The embodiment of the of the present invention tape position indicator of Fig. 7 explanation in quick access operation.
Fig. 1 is the block diagram that the multitrack tape device 6 of tape position indicator 8 of the present invention is housed.Magnetic tape equipment 6 links to each other with primary processor or computing machine 10, comprises control module 12 and magnetic tape drive unit 20.Control module 12 comprises by channel adapter 14 and the mechanically operated command unit 6 of primary processor 10 couplings with control drive unit 20.Command unit 16 is also controlled by data and form controller 18 and read-write controller 24 control datas flowing 4 of channel adapter 14 and tapes.
Driver element 20 comprises movement controller 22 and read-write controller 24, and movement controller 22 is used to control the action of tape 34 and magnetic transducer head 28, and read-write controller 24 comprises the read/write circuit that the magnetic head 28 in the tape channel 26 is operated.When needs access tape 34, the tape cassete 30 of device tape 34 is loaded into driver element 20.If tape cassete 30 only comprises a supply reel, take-up reel 32 just is installed in the tape channel 26; Perhaps, tape cassete 30 not only comprises supply reel but also comprise take-up reel.Motor and control system are used to tape transfer crossed magnetic head 28 so that to tape 34 write datas or read data therefrom.
One typical magnetic tape equipment 6 can be to having the tape read-write of 32 parallel track parts.As shown in Figure 2, the track part on the tape 34 is divided into 4 track part groups that interweave. Track part 1,5,9 ... with 29 in first group of A; Track part 3,7,11 ... with 31 in second group of B; Track part 2,6,10 ... with 30 in the 3rd group of C; Track part 4,8,12 ... with 32 in the 4th group of D.When tape 34 along arrow 36 indication sides and when transmission, the track part in A group and the C group is by access, and when tape in opposite direction during (by arrow 38 indications) transmission, the track part that B organizes and D organizes is by access.
When tape 34 when first direction 36 is carried, 8 cover read-write elements are used for any all track parts of simultaneously access A and C track part group on the magnetic head 28, and when tape 34 38 whens transmission in opposite direction, other 8 cover read-write elements are used for any all track parts of the other track part group B of access simultaneously and D.
Magnetic head regulator in the driver element 20 moves to any (as shown in Figure 2) in AB or the CD two positions with the track part among respectively access track part group A and C or B and the D with magnetic head 28.Like this, in snakelike recording process, magnetic head 28 is placed in position AB, and tape is along first direction 36 transmission.Track part among the track part group A is read with verification msg by corresponding reading component then immediately with suitable writing component record.When arriving the physics end of tape 34, reverse directions, the track part among the track part group B is write reading component record and checking by another set of.When arriving tape at the first bruss, the magnetic head regulator is transformed into second place CD with magnetic head, and transmission direction goes to first direction 36, is recorded on the track part group C to proceed.(that is, when beginning that reaches tape 34 or end) tape direction counter-rotating after each track part group is recorded, and (that is, when beginning that arrives tape 34 or end) head position changes after being recorded every a track part group.Recorded snakelike playback is carried out in a similar manner.
Should be understood that said process is equally applicable to have the magnetic tape equipment (relevant with tape) of the track part of other number, track part group, index position and complete read-write cell.For example, the magnetic tape equipment of 128 data track parts develops on can access one tape.Track part is divided into eight track part groups, four groups in each direction.Four track part groups of a direction of 16 cover read-write elements accesses, and other four track part groups on the direction are wanted in 16 cover read-write elements accesses in addition.Magnetic head switches between four positions.
What of the motion that tape position indicator 8 of the present invention makes tape and position and used memory capacity are relevant operates with the snakelike tape of accurate supervision.With reference to Fig. 3 A-3F, indicator 8 comprises a display unit or mechanism, as a LCD (LCD), and the device of the display element of dot matrix LEDs or other energy addressing tape position indicator 8.When tape cassete 30 is put in the driver element 20 (Fig. 3 A), indicator extinguishes, opens or is full of a kind of light or color fully.Then display (Fig. 3 B) is divided into show bar A ', B ', C ', D ' along the longitudinal, illustrates the track part group, wherein the physics starting end of tape 34 is represented on the left side of figure, and the physics end of tape 34 is represented on the right.Show that as Fig. 3 C when data recording operation began, tape 34 was carried along arrow 36 directions.Represent the show bar A ' of track part group A to begin to fill the zone of opening to the right (end of tape 34) from the left side (beginning of tape 34) of display with a relative brightness or a color (being black among the figure).
When having write down the first track part group A, when the bar A ' of display had been filled and has arrived tape 34 terminal, the tape direction was reversed to the direction of arrow 38 indications.Along with the second track part group B is recorded, second show bar B ' beginning is filled (Fig. 3 D) from right to left.Shown in Fig. 3 E and 3F, along with all the other track part groups on the tape 34 are recorded, remaining show bar C ' and D ' are filled by the direction of similar manner, alternation.
In this process, be the marker 40 that moves with the open area of effective display bar with being filled the border that the zone separates, its representative begins and the terminal corresponding tape 34 current positions that are recorded with the physics of tape 34.The direction of mobile marker 40 is represented the direction of tape 34 between supply reel and take-up reel.And the part that has been recorded in operation in total GB on Tape can be determined by observing the ratio that is filled by the number of the show bar of complete filling and effective show bar.For example, among Fig. 3 C, tape 34 about 25% by around to take-up reel, about 6% of total memory capacity has been used up.Among Fig. 3 E, tape 34 about 75% on take-up reel, 69% of capacity has been used up.And among Fig. 3 F, about 25% of tape 34 is rolled on the tep reel, and 94% of capacity is used up.
Although the tape position indicator 8 that diagram shows has 4 show bar A '-D ', represent 4 track part groups, the present invention also can be used for handling the magnetic tape equipment of arbitrary number track part group, if any 4 index positions, every group of 8 track part groups that 16 track parts are arranged.If the physics of tape begins the left side representative with display 8, odd number show bar A ' and C ' from left to right are filled, and even number show bar B ' and D ' are filled from right to left.
The embodiment of the tape position indicator 8 of Fig. 4 A explanation in rewinding operation.When finishing a recording operation, display 8 shown in above-mentioned figure, with the position of the heterochromatic zone of display bar and mobile marker 40 indication tapes 34 and used tape how much, all as previously discussed.When rewinding operation beginning, the bar of display is cleared and new marker 42 appears at the place at the original place of mobile marker, but stretches (second figure) along all show bars.When rewinding, rewinding marker 42 moves to the left side of the tape location display 8 of representing supply reel, shown in remaining figure among Fig. 4 A.Fig. 4 B and 4C explanation additional embodiments, after show bar was cleared, all show bars of show bar were positioned at the zone on mobile marker 40 left sides by relative brightness or color filling.When rewinding begins, be filled the zone and retreat to the left side of the tape position indicator 8 of representing supply reel.Conventional F.F. or positioning action can monitor by similar manner, when tape 34 from supply reel when take-up reel transmits, marker 42 or painted areas are extended from the left side of tape position indicator 8.What it is also understood that is that the details of tape position indicator 8 can change and can not influence the information that it provides.As, the indicator 8 in the rewinding mode shown in Fig. 4 A and the 4C can show the shedding mechanism of the track part component district A '-D ' that does not separate.
Fig. 5 B and 5C explanation additional embodiments, wherein, when tape 34 was fast-forward to object block, one or all show bars were filled.But each among these embodiment also an end of displaying block marker so that the process of tape in the target logic piece to be described better.
Yet in each of these embodiment, accurately the ability of watchdog logic block operations is subjected to the resolving power of display unit 8 and with the limited in number of the logical block in 34.The number of if block resolving power big or display unit 8 is low, just can not show the interior operation process image of piece of usefulness.Fig. 6 A-6C explanation strengthens the embodiments of the invention of the surveillance coverage of display unit 8 when being used for the logical block operation.
Among Fig. 6 A, show bar A '-D-' quilt replenishes an extra block show bar E ', and wherein effectively the image of logical block is exaggerated to increase the display resolving power.The physics of tape 34 between dish moves and is monitored about the identical mode of the description of Fig. 5 A-5C.But, additional show bar E ' pass through be filled in the mirror operation process piece relatively what, thereby improve the accuracy that tape monitors.
In the embodiment of Fig. 6 B, the piece show bar E ' among Fig. 6 A is replaced by digital counter 50, in its indication operation the number percent of piece of process, can select indicator dog itself (among Fig. 6 B, the logical block 7 in 10 altogether being operated).
Among the embodiment in Fig. 6 C, cover show bar A '-D ' usefulness single display bar F ' replacements of Fig. 6 A, to indicate the physics process of tape 34 between tep reel, simultaneously, the same process that reflects that logical block is interior among the piece show bar E ' of top and Fig. 6 A.
Fig. 7 illustrates the quick access of using tape location display 8 to monitor snakelike record, and wherein the logic length of tape 34 is less than its physical length.The snakelike record of quick access allows Random Access Data faster, although GB on Tape does not use up.When tape cassete 30 was installed, tape position indicator 8 was reset to show show bar A '-D '.Tape logical end (LEOT) mark 48 passes the relevant position that show bar is positioned at the tape logical end.(in addition, the track part group of separation is divided A '-D ') can be scavenged into the right of LEOT mark 48).Except being when arriving LEOT rather than tape physics end, beyond the direction of tape 34 (thereby direction of the movement indicia 40) counter-rotating, reading and writing, rewinding and forwarding operation are by carrying out about Fig. 3 and the described mode of Fig. 4.Indicate what of current tape location and used tape with respect to total physical tape capacity.
When with reference to its most preferred embodiment the present invention being had been described in detail and describing, those technician in present technique field will be appreciated that and can not deviate from the various variations that the spirit and scope of the present invention are carried out form and details.As, tape position indicator 8 can comprise that also a counter or similar installation show a number percent or other numeral with numeral, replenishes the graphical information of indicator 8.What of tape on a tep reel or another tep reel are numeral can be presented at, and can select to show and imitate track part group itself.
Claims (37)
1, a kind of multitrack tape drive unit is used to record information to and has a plurality of track part groups, reads information on this group of each magnetic has many parallel track parts that extend in the whole length range of tape the tape or from described tape, and it comprises:
Tape transfer mechanism is used for mobile tape between first and second tape reels;
Magnetic head;
The magnetic head regulator is used between assigned address the horizontal moving head of tape relatively, thereby makes described magnetic head to track part writing information described in the track part group or sense information therefrom;
The interface effectively is coupled with described magnetic head and magnetic head regulator, with to/from main frame transmission/reception information;
Tape position indicator is characterized in that it comprises:
Relative first limit and second limit, the distance between first limit and second limit is represented the length of tape;
A plurality of parallel bar charts, each bar chart extends between first limit and second limit, represents corresponding track part group, and effective bar chart is corresponding to selected track part group in described a plurality of bar charts;
Removable marker is used in selected track part group of tape read/write operation identification and the tape that indicating on described effective bar chart on each tape reel long;
Described bar chart has in the read/write operation of indicating each by what device of read/write track part group.
2, the described drive of claim 1 is characterized in that:
Described tape position indicator also comprises display controller, is used to respond mobile, the order of tape between first and second tape reels visual state of the described effective bar chart of part is moved from the first configuration to the second configuration.
3, the feature of the described drive of claim 1 is:
Described tape position indicator also comprises display controller, be used for described movable marker device is positioned at the lengthwise position of at least one described bar chart, this position indicates the ratio of current tape length on each tape reel, and the response tape moves described removable marker toward the motion of the first tape reel rewinding to first limit of described frame.
4, being characterized as of the described drive of claim 3:
Described display controller comprises the rewinding campaign that is used for responding tape, the visual state of the first of described at least one bar chart is become the device of first state from second state; With
Described removable marker comprises the boundary line that the first of described effective bar chart and the second portion that is in second state are separated.
5, being characterized as of the described drive of claim 2:
Described tape position indicator also comprises the blip device, its longitudinally location positioning on a described bar chart, represent target location on the target track part group; With
Described display controller comprises and is used for responding tape moved, moves to described blip device from first limit of described tape position indicator described removable marker toward the F.F. of second tape reel device.
6, being characterized as of the described drive of claim 5:
Described display controller comprises also and is used for responding read/write operation that this moment, tape moved, and reseted mobile marker and moved described mobile marker from described blip device between first and second tape reels.
7, the described drive of claim 1 is characterized as it and comprises;
A plurality of logical block markers, it is positioned in the lengthwise position of the representative tape logical end of described bar chart; With
Display controller is used for responding tape moving and moving between the tape logical end and second tape reel, the visual state of described effective bar chart first is become second state in turn between first tape reel and tape logical end.
8, being characterized as of the described drive of claim 1: described bar chart comprises a LCD.
9, the described drive of claim 1 is characterized as it and comprises the device that is independent of described bar chart, is used to refer to the ratio that logical block is read or write in the read/write operation.
10, being characterized as of the described drive of claim 9: the device that is used to refer to the ratio of logical block comprises the piece bar chart parallel with described a plurality of parallel bar charts.
11, being characterized as of the described drive of claim 10:
Described device with an indication logical block ratio comprises described movable block marker on the bar chart; With
Described tape position indicator also comprises display controller, is used for described movable block marker is positioned on the described bar chart in the indication read/write operation logical block by on the lengthwise position of read/write ratio.
12, being characterized as of the described drive of claim 11:
Described display controller comprises the device that is used for responding read/write operation, the visual state of described bar chart first is become first state from second state; With
Described movable block marker comprises that the first with described bar chart is in the boundary line that the second portion of second state separates with it.
13, being characterized as of the described drive of claim 9: be used for indicating the described device of the ratio of logical block to comprise that indication read/write operation logical block is by the digital counter of the number percent of read/write.
14, on multiple track group record device, indicate the method for tape location, it is characterized in that comprising following step:
The tape of in drive, packing into, this tape has a plurality of parallel track parts that extend in the whole length of tape, and these a plurality of track parts are divided into the track part group;
Reset a plurality of show bars, each show bar is represented a corresponding track part group, and each show bar has beginning and terminal first end and second end of representing tape respectively;
Tape from first tape reel to the process that first tape of second tape reel moves, by the beginning of tape to its terminal beginning data access operation;
When first of tape moved, first show bar was filled to second end from first end;
When data access operation arrives end of tape, second tape of tape from second tape reel to first tape reel moves, continue data access operation to its beginning from end of tape;
Second tape at tape moves simultaneously, and second show bar is filled to first end from second end;
Alternately reach to second end and fill continuous show bar in turn to first end, be done up to data access operation from second end from first end.
15, the feature of the described method of claim 14 is that it comprises following step:
After finishing data access operation, beginning rewinding operation;
Wipe the zone that is filled of show bar;
The tape mark device is placed on the lengthwise position of at least one show bar, be used for representing the current position of tape;
Tape is moved on first tape reel;
When tape moved, the tape mark device moved to first limit of at least one show bar.
16, being characterized as of the described method of claim 15: the tape mark device is a line that passes all show bars, and the step of described mobile tape marker is included in tape and moves that line to first limit of all show bars when moving.
17, being characterized as method as described in the claim 15:
Described installation steps comprise filling and are positioned at first end and represent all show bars between the lengthwise position of tape current location that the tape mark device is the boundary line between show bar fill area and erase area;
The step of described mobile tape marker comprises the step of wiping the zone that show bar is filled towards the direction on first limit.
18, being characterized as of the described method of claim 15:
Described erase step also comprises wipes all outer show bars of a show bar;
Described installation steps comprise filling and are positioned at first end and represent that show bar between the lengthwise position of tape current location, and the tape mark device is the show bar boundary line between fill area and erase area;
The step of described mobile tape marker comprises towards the direction on first limit wipes show bar fill area.
19, the feature of the described method of claim 14 is the following step before it is included in described data access step:
At the lengthwise position installation targets marker of selected show bar, represent the target tape location on the target track part group of wanting access;
Tape proceeds to the target tape location soon;
In described F.F. step, to blip device mobile tape marker.
20, the feature of the described method of claim 19 is that it also is included in described the following step after the step of blip device mobile tape marker:
Reset show bar;
In the 3rd tape motion, begin data access operation from the target tape location;
In described data access operation, fill selected show bar in proper order from the blip device.
21, being characterized as of the described method of claim 19: the tape mark device is a line that passes whole show bars, moves this straight line to blip device direction when the step of described mobile tape marker is included in the F.F. step.
22, being characterized as of the described method of claim 19: when the step of described mobile tape marker is included in described F.F. step, fill all show bars between first end and blip device, the tape mark device is the show bar separatrix of fill area and erase area.
23, being characterized as of the described method of claim 19:
Described erase step also comprises wipes a show bar all show bars in addition;
The step of described mobile tape marker comprises and the F.F. step while that fill that show bar between first end and blip device, the tape mark device is the fill area of that show bar and the separatrix of erase area.
24, being characterized as of the described method of claim 14:
Described reseting on the lengthwise position of representative tape logical end that step also is included in show bar installed a plurality of logical block markers;
When being included in first tape motion, the step of described filling first show bar fills first show bar to the first logical block marker from first end;
The step of described continuation data access operation is included in second tape from second tape reel to first tape reel moves, and continues data access operation from the tape logical end to the beginning of tape;
The step of described filling second show bar is included in second tape when moving, and fills the step of second show bar to first end from the second logical block marker.
25, the feature of the described method of claim 14 is that it may further comprise the steps: in a logical block operating process, in the logical block operation, fill a piece show bar that is independent of a plurality of show bars to a relative end from an end.
26, the feature of the described method of claim 14 is that it may further comprise the steps: in the logical block operation, with the logical block operation while, operational counter is to indicate this operation process.
27, the feature that is used to monitor the indicator of tape operation on the magnetic tape equipment is that it comprises;
A plurality of bar charts, it extends between relative first limit of display and second limit, and each show bar is represented the track part group that has many parallel track parts on the tape, and the beginning and the end of tape represented on described first limit and second limit respectively;
The tick lables device can move along at least one selected bar chart; With
Display controller is used to respond tape moving between first tape reel and second tape reel, controls moving of described tick lables device.
28, the described indicator of claim 27 is characterised in that: described display controller comprises the mobile while with tape, the visual state of described selected bar chart is become the device of second feature from first feature.
29, the described indicator of claim 28 is characterised in that: described tick lables device comprises the first with first feature that is positioned at selected bar chart and has separatrix between the second portion of selected bar chart of second feature.
30, the described indicator of claim 27 is characterised in that: described display controller comprises that being used to respond rewinding operates, makes described tick lables device return the device on described first limit.
31, the described indicator of claim 27 is characterised in that: it comprises the blip device on the lengthwise position of the target location that can be positioned on described bar chart previous generation entry mark track part group;
Described display controller comprises and is used for responding tape moves described tick lables device to described blip device to the F.F. campaign of second tape reel, from first limit of described tape position indicator device.
32, the described indicator of claim 27 is characterised in that: it comprises a plurality of logical block markers that place the lengthwise position of representing the tape logical end on the described bar chart;
Described display controller comprises and is used for responding tape becomes second feature from first feature moving between first tape reel and the tape logical end and between the tape logical end and second tape reel, with the visual state of described selected bar chart first device.
33, the described indicator of claim 27 is characterised in that: it comprises a plurality of tape logical end markers on the described bar chart.
34, the described indicator of claim 27 is characterised in that it comprises:
The logical block bar chart, it is independent of described a plurality of bar chart, has beginning and terminal first end and second end of representing logical block on the tape respectively;
The block mark device, but the response logic block operations moves along described logical block bar chart.
35, the feature of the described indicator of claim 27 is that it comprises:
But the logical block counter of response logic block operations.
36, the feature of the described indicator of claim 27 is that described bar chart comprises LCD.
37, the feature of the described indicator of claim 27 is that described bar chart comprises the LED matrix display.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13685893A | 1993-10-18 | 1993-10-18 | |
| US136,858 | 1993-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1111785A true CN1111785A (en) | 1995-11-15 |
Family
ID=22474701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94116421A Pending CN1111785A (en) | 1993-10-18 | 1994-09-19 | Tape position indicator for multi-track serpentine recording |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH07130146A (en) |
| KR (1) | KR950012445A (en) |
| CN (1) | CN1111785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113379984A (en) * | 2020-02-25 | 2021-09-10 | 北京君正集成电路股份有限公司 | Electronic nursing fence system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69637606D1 (en) * | 1995-10-09 | 2008-08-28 | Matsushita Electric Ind Co Ltd | Bar code production method for optical disc |
-
1994
- 1994-07-27 JP JP6175146A patent/JPH07130146A/en active Pending
- 1994-09-15 KR KR1019940023916A patent/KR950012445A/en not_active Application Discontinuation
- 1994-09-19 CN CN94116421A patent/CN1111785A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113379984A (en) * | 2020-02-25 | 2021-09-10 | 北京君正集成电路股份有限公司 | Electronic nursing fence system |
| CN113379984B (en) * | 2020-02-25 | 2022-09-23 | 北京君正集成电路股份有限公司 | Electronic nursing fence system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07130146A (en) | 1995-05-19 |
| KR950012445A (en) | 1995-05-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |