CN1241775A - Tape cartridge of recording and reproducing apparatus - Google Patents
Tape cartridge of recording and reproducing apparatus Download PDFInfo
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- CN1241775A CN1241775A CN 99108882 CN99108882A CN1241775A CN 1241775 A CN1241775 A CN 1241775A CN 99108882 CN99108882 CN 99108882 CN 99108882 A CN99108882 A CN 99108882A CN 1241775 A CN1241775 A CN 1241775A
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- tape
- housing
- record
- rotation
- tape cassete
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Abstract
Disclosed is a small-sized light-weight tape cartridge to be installed in a recording and reproducing apparatus, for stably controlling a predetermined running speed of the tape. Based on a rotation speed of a winding reel (3), which is detected by a photointerrupter (7) and a photo-sensor (8), a clock signal is calculated by a calculating circuit (11) by reading out from a ROM (17) an every second counting value corresponding to an accumulating counting value, a running speed of the tape (6) is calculated by a rotation controlling means (12) from a detecting signal of sensors (13a) and (13b), rotation speeds of the winding reel (3) and the feeding-out reel (5) are controlled in a way such that the running speed of the tape becomes a prescribed value by an output of a control signal (Fc).
Description
The present invention relates to write down tape cassete with transcriber, it is installed on and is used in the record and transcriber that is provided with a reel, this reel is carried out the winding and the rewinding of built-in tape, and the present invention relates to comprise the record and the playback system of tape cassete and pen recorder.
In traditional record and transcriber, for wound tape when writing down, when reproducing, present tape, carry out fast rotational and rewinding, capstan motor and driven in rotation windup reel that the capstan (capstan) that needs driving tape twines is rotated and the reel motor of presenting reel thereon.
The capstan motor volume of comparing that before had been located in record and the transcriber is big, because vibration and the unevenness that causes capstan to rotate greatly because of motor volume directly have a strong impact on tape transport.Like this, do not have the vibration of axle and the unevenness of rotation, need compensation mechanism etc. in order to realize stable rotation.In addition, traditional record and transcriber need extra motor, and therefore the whole device volume that becomes is bigger, bring the problem of manufacturing cost thus.
The present invention is directed to the situation of present tape transport in above-mentioned record and the transcriber, the present invention seeks to propose a kind of tape cassete and its record and transcriber, wherein this tape cassete is installed in the described device, and be used for stablizing at a predetermined velocity the record and the transcriber of tape transport, it has configuration of small size, light weight and characteristics cheaply.
According to one aspect of the present invention, a kind of tape cassete that is used in record and the transcriber is provided, it comprises:
Housing wherein comprises a tape;
Tape, magnetic drum, first and second reels, they are included in this housing;
Tape transport mechanism is included in the housing and presents tape;
Pick-up unit is included in this housing, is used to detect the rotation of reel; With
Conversion equipment is included in this housing, and being used to change the signal about rotation that is detected by pick-up unit becomes signal about rotational speed,
According to another aspect of the present invention, a kind of record and playback system that is made of tape cassete and pen recorder is provided, record and transcriber that it comprises a tape cassete and uses this tape cassete, wherein,
Tape cassete comprises:
Housing wherein comprises a tape,
Tape, magnetic drum, first and second reels, they are included in this housing,
Tape transport mechanism is included in the housing and presents tape,
Pick-up unit is included in this housing, be used to detect reel rotation and
Conversion equipment is included in this housing, and being used to change the signal about rotation that is detected by pick-up unit becomes signal about rotational speed; With
Use the record and the transcriber of described tape cassete to comprise:
The tape cassete holding portion holds this tape cassete in it,
One installs, and is used for being electrically connected to the tape transport mechanism and the conversion equipment of tape cassete,
Counting circuit is used to receive and add up about the pulse signal of rotational speed, and produces the control wave corresponding to the accumulated value that adds up, the umber of pulse at this control wave indication per second place and
Output circuit is used for control wave is outputed to tape transport mechanism.
Fig. 1 is the key diagram of the whole configuration of first embodiment of the invention;
Fig. 2 is the key diagram of the concise and to the point configuration of same embodiment;
Fig. 3 is the circuit diagram of the substantial portion configuration of control circuit system among Fig. 1;
Fig. 4 is the process flow diagram of the clock calculation operation of same embodiment;
Fig. 5 is the process flow diagram of the clock calculation operation of the second embodiment of the present invention.
To explain the first embodiment of the present invention referring to figs. 1 through Fig. 4.
Fig. 1 is the key diagram of the whole configuration of an embodiment, and Fig. 2 is the key diagram of the concise and to the point configuration of present embodiment, and Fig. 3 is the circuit diagram of the substantial portion configuration of control circuit system among Fig. 1, the process flow diagram of the clock calculation of present embodiment operation during Fig. 4.
In the present embodiment, as shown in Figure 2, tape 6, tape 6 around the data cell device 2 of its winding, be used for twining and presenting the windup reel 3 of tape 6 and present reel 5 and be included in tape cassete housing 1.In addition, unshowned control circuit system and drive mechanism system are included in the tape cassete housing 1, and arrange this tape cassete to make it possible to be installed in record and the transcriber body.
As shown in Figure 1, whole configuration is, is arranged with the pectination optical chopper of being made by light screening material (photo-interrupter) 7, light activated element 8 in the upper edge of windup reel 3, its Optical Transmit Unit 8a places windup reel 3 sides, and its light receiving unit 8b places the outside of windup reel 3.In addition, the output terminal light of light receiving unit 8b is connected to rotational speed testing circuit 10, be used to detect the rotational speed of windup reel 3, counting circuit 11 is connected to rotational speed testing circuit 10, be used for calculating and clock signal F2 based on rotational speed pulse signal F1 from 10 outputs of rotational speed testing circuit.
Simultaneously, motor 21 is connected to the turning axle 3a of windup reel 3, rotate to drive windup reel 3, and the driving force of motor 21 is delivered to the turning axle 5a that presents reel 5 by gears mechanism 22.In addition, in the upstream side and the downstream of the trend of the tape 6 that twines magnetic drum 2, sensor 13a and sensor 13b are placed on respectively along the two ends of the peripheral predefined distance of tape 6.
Then, in the present embodiment, the output terminal of the output terminal of the output terminal of function circuit 11, sensor 13a and sensor 13b is connected to the input end of rotation control circuit 12, be used for controlling in such a way windup reel 2 and the rotational speed of presenting reel 5, this mode is that the tape running speed of tape 6 becomes predetermined value, and the output terminal of rotation control circuit 12 is connected to motor 21.
In addition, in above-mentioned light activated element 8 because from the light of Optical Transmit Unit 8a by light receiving unit 8b along with the rotation of windup reel 3 repeats to receive with predetermined space, as shown in Figure 3, it can represent that wherein switch 23 repeats break-make by equivalent electrical circuit 8A, and light emitting diode P repeats break-make.As shown in Figure 3, the rotational speed testing circuit 10 that light is connected to equivalent electrical circuit 8A is like this, the collector of the phototransistor 25 of grounded emitter is connected to the tie point between resistance 27 and the electric capacity 26, resistance 27 and electric capacity 26 are connected in series between power Vcc and the ground mutually, tie point between electric capacity 26 and the resistance 27 is connected to the base stage of transistor 30, the grounded emitter of this transistor 30 by resistance 28.Then, resistance 29 is connected between the collector and power Vcc of transistor 30, and electric capacity 31 is connected between the collector and ground of transistor 30, and the output terminal of rotational speed testing circuit 10 is arranged on the tie point between electric capacity 31 and the transistor 30.
In addition, in aforementioned calculation circuit 11, as shown in Figure 1, be provided with CPU16 and be used to control whole operation, input circuit 15 and ROM17 are connected to CPU16 by bus B, input circuit 15 is connected to rotational speed testing circuit 10, and carry out the input interface operation, a table of ROM17 storage and a program, write in this table from the accumulated counts value of the rotational speed pulse signal F1 of rotational speed testing circuit 10 and at the per second place count value corresponding to the accumulated counts value, this program is used for the clock calculation operation based on this table.Equally, CPU16 is connected to a non-volatile ram 18 by bus B, in the moment of clock calculation operation various data are write and read, and the output terminal 20 that rotation control circuit 12 and being used to is carried out the output interface operation is connected to CPU16.
The operation that explanation is had the embodiment of this configuration.
At first, will explain according to the operation of the clock calculation of present embodiment with reference to the process flow diagram among Fig. 4.
In the present embodiment, rotation corresponding to windup reel 3, the light that receives from the Optical Transmit Unit 8a of light activated element 8 at light receiving unit 8b place, with corresponding to the predetermined space of rotational speed by optical chopper 7 shadings, with corresponding to the count rate of the rotational speed of windup reel 3 from rotational speed testing circuit 10 output rotational speed pulse signal F1, and rotational speed pulse signal F1 is input to the input circuit 15 of counting circuit 11.
Step S1 place in the process flow diagram of Fig. 4 is retrieved from ROM17 corresponding to the per second count value (X) from the accumulated counts value of the rotational speed pulse signal of input circuit 15 input by CPU16.Then, process proceeds to step S2, judges that at this windup reel 3 is with normally or retrograde rotation.
When step S2 judges that windup reel 3 is rotating with normal direction, process proceeds to step S3, and rotational speed pulse signal F1 is increased to current accumulated counts value, and instruction count by CPU, the value that increases and count writes among the RAM18 up to becoming X, and when judging that in step S3 the value that institute increases and counts becomes X, process proceeds to step S4, and according to the second that increased progressively 1 second and indicated the present clock signal second.Continue similar increase and counting process and in step S4, calculate according to minute unit that surpasses second and the present clock signal F2 of hour unit.
Simultaneously, when judging that in step S2 windup reel 3 is with retrograde rotation, process proceeds to step S5, deducts rotational speed pulse signal F1 from current accumulated counts value, and by the instruction count of CPU16, and the value that subtracts and count writes among the RAM18, become-X up to the value that subtracts and count, and when judging that in step S5 the value that institute subtracts and counts reach-X, process proceeds to step S6, according to deducting 1 second second, and the second of indication present clock signal.Continue similarly to subtract each other, calculate according to minute unit that surpasses second and the present clock signal F2 of hour unit with counting step and in step S6.
Be executed in logging mode, reproduction mode, fast-forward mode and the rewinding mode of all records and transcriber to this clock calculation of explaining operation.And, the RAM18 that is written into sense data in the moment of clock calculation operation forms non-volatile, at tape cassete housing 1 from record with transcriber shifts out and packed into once more and use or in power fail recovery use later on, begin operation from previous state, and this operation execution of remaining valid is not because the data of RAM18 are also wiped.
Then, will explain control operation according to the tape running speed of present embodiment.
By above-mentioned counting calculating operation, be input to rotation control circuit 12 from the clock signal F2 of function circuit 11 outputs, and a section of the reference position that tape 6 twines around magnetic drum 2 parts is detected by sensor 13a and 13b, sensor 13a and 13b are placed apart with predetermined space along the periphery of tape 6, are input to rotation control circuit 12 from detection signal F3a and the F3b of sensor 13a and 13b.
In the present embodiment, by rotation control circuit 12 based on from the clock signal F2 of function circuit 11 output, from the detection signal F3a of sensor 13a with from the detection signal F3b of sensor 13b, calculate the current travelling speed of tape 6, the travelling speed of being calculated with by the velocity ratio of current setting pattern regulation, and rotation control circuit 12 output control signal Fc are used for controlling by this way the rotation of the motor 21 of windup reel 3, and this mode is the tape running speed that the tape running speed of tape 6 becomes regulation.
Then, the control signal Fc of origin spinning control circuit 12 regulates the revolution of motor 21, the rotation of motor 21 is sent to the turning axle 5a that presents reel 5 by gears mechanism 22, the rotational speed of windup reel 3 is controlled by this way with the rotational speed of presenting reel 5, and this mode is that the tape running speed of tape 6 becomes the regulation tape running speed under the present mode.
As explaining, according to the present invention, for making whole device volume become big capstan motor is unwanted, the rotational speed of windup reel 3 is by the optical chopper 7 that constitutes on windup reel 3, light activated element 8 and rotational speed testing circuit 10 detect, and based on this rotational speed, unit of account 11, calculate clock signal F2 by per second count value corresponding to the accumulated counts value of reading from ROM17, by the tape running speed of rotation control circuit 12 from detection signal F3a and the F3b calculating tape 6 of sensor 13a and 13b, and the control signal Fc of windup reel 3 and rotational speed origin spinning control circuit 12 outputs of presenting reel 5 controls by this way, and this mode is that the tape running speed of tape 6 becomes setting.
In this manner, according to present embodiment, hinder this device and realize that the capstan motor of small-sized volume is unwanted, the result, tape 6, magnetic drum 2, windup reel 3, presenting reel 5 and control-driven system is included in the tape cassete housing 1, this tape cassete housing 1 removably is contained in record and the transcriber, when tape cassete housing 1 is put into or once more when recovering behind the power fail, the data that RAM18 writes are not wiped free of, make it possible to begin immediately suitable servocontrol thus, in the short time period, be set in predetermined value, and the tape running speed of always using High Accuracy Control tape 6 by small-sized volume and simple operations.
Explain the second embodiment of the present invention with reference to Fig. 5.
Fig. 5 is the process flow diagram of the clock operation of expression present embodiment.
In the present embodiment, by using the Fig. 1 that in first embodiment, has explained to carry out explained later.Different among ROM17 in the counting circuit 11 and first embodiment, stored a program of showing and be used for the clock calculation operation, write in this table from an end of tape 6 in the accumulated counts value of the speed pulse signal F1 of per minute place with locate a count value p.s. in one minute.
That is explained among the configuration of other parts in this embodiment and Fig. 1 is identical, does not carry out the explanation of repetition.
To explain according to the operation of the clock calculation of second embodiment with reference to the process flow diagram among Fig. 5.
In the step S10 of the process flow diagram of Fig. 5, if minute position between from ROM17 table, obtaining minute by the CPU16 of counting circuit 11 based on current rotational speed pulse signal F1, and regulation is from minute position of current tape 6 one ends, process proceeds to step S11, wherein per second is divided from the residual velocity pulse signal of regulation minute position with count value, easily count signal F2.
Because identical according to what explain among the control operation of the tape running speed of the tape 6 of present embodiment and first embodiment that has explained, at this, repetition of explanation not.
Like this, according to present embodiment, except the effect of having explained that in first embodiment, obtains, because by based on the accumulated counts value of in the operating side 11 of per minute place speed pulse signal, from ROM17, reading from an end of tape 6 of the rotational speed of windup reel 3 and by one minute per second count value, calculate easily this count signal, can effectively carry out the control of the tape running speed of the operation of clock signal F2 and tape 6 based on the calculated value that obtains.
Simultaneously, in the embodiment that has now explained, explained that optical chopper is installed in the situation on the windup reel, but the invention is not restricted to these embodiment, the result, optical chopper can be installed in and present on the reel.
Comprise according to the tape cassete that is used in record and the transcriber of the present invention:
Housing wherein comprises a tape;
Tape, magnetic drum, first and second reels, they are included in this housing;
Tape transport mechanism is included in the housing and presents tape;
Pick-up unit is included in this housing, is used to detect the rotation of reel; With
Conversion equipment is included in this housing, and being used to change the signal about rotation that is detected by pick-up unit becomes signal about rotational speed,
According to record and the playback system that constitutes by tape cassete and pen recorder of the present invention, comprise the record and the transcriber of a tape cassete and this tape cassete of use, wherein,
This tape cassete comprises:
Housing wherein comprises a tape,
Tape, magnetic drum, first and second reels, they are included in this housing,
Tape transport mechanism is included in the housing and presents tape,
Pick-up unit is included in this housing, be used to detect reel rotation and
Conversion equipment is included in this housing, and being used to change the signal about rotation that is detected by pick-up unit becomes signal about rotational speed; With
Use the record and the transcriber of this tape cassete to comprise:
The tape cassete holding portion holds this tape cassete in it,
One installs, and is used for being electrically connected to the tape transport mechanism and the conversion equipment of tape cassete,
Counting circuit is used to receive and add up about the pulse signal of rotational speed, and produces the control wave corresponding to the accumulated counts value, the umber of pulse at this control wave indication per second place and
Output circuit is used for control wave is outputed to tape transport mechanism.
Therefore, the rotational speed of reel is controlled by this way, this mode is the determined value that the calculating tape running speed of tape becomes previous setting, by reel to preestablish the rotation of definite stable tape running speed, the winding and the rewinding of put and reproduction tape in can carrying out, and since tape, magnetic drum, reel, tape transport mechanism, pick-up unit, conversion equipment all be contained in the tape cassete housing, can carry out the High Accuracy Control of tape travelling speed, the tape cassete of the quite light and small-sized volume of the record and the integral body of transcriber can be provided as a result.
In addition, according to the present invention, owing to calculate clock signal based on the accumulated counts value of the speed pulse signal of reading from storer with corresponding to the per second count value of accumulated counts value, can be stably and carry out the control of the predetermined tape running speed that reaches tape at short notice.
According to the present invention, based on the accumulated counts value of per minute speed pulse signal and minute the per second count value, calculate clock signal, like this, can be stably and carry out the control of the predetermined tape running speed that reaches tape at short notice.
Described the preferred embodiments of the present invention with reference to the accompanying drawings, should understand and the invention is not restricted to the foregoing description, can realize variations and modifications by those skilled in the art, and not break away from the spirit or scope of the present invention as in accessory claim, defining.
Claims (8)
1, a kind of tape cassete that is used in record and the transcriber comprises:
Housing wherein comprises a tape;
Tape, magnetic drum, first and second reels, they are included in this housing;
Tape transport mechanism is included in this housing and presents tape;
Pick-up unit is included in this housing, is used to detect the rotation of reel; With
Conversion equipment is included in this housing, and being used to change the signal about rotation that is detected by pick-up unit becomes signal about rotational speed.
2, tape cassete as claimed in claim 1, wherein said tape transport mechanism comprises the motor that is used for driving rotatably described reel, and described pick-up unit comprises a light activated element, is used to detect the rotation that is provided in the optical chopper on the relevant reel.
3, tape cassete as claimed in claim 2, the control circuit that wherein is used to control described motor rotation further is included in the described housing.
4, a kind of record and playback system that constitutes by tape cassete and pen recorder, record and transcriber that it comprises a tape cassete and uses this tape cassete, wherein,
This tape cassete comprises:
Housing wherein comprises a tape,
Tape, magnetic drum, first and second reels, they are included in this housing,
Tape transport mechanism is included in this housing and presents tape,
Pick-up unit is included in this housing, be used to detect reel rotation and
Conversion equipment is included in this housing, and being used to change the signal about rotation that is detected by pick-up unit becomes signal about rotational speed; And
Use the record and the transcriber of this tape cassete to comprise:
The tape cassete holding portion holds this tape cassete in it,
Be used for being electrically connected to the tape transport mechanism of described tape cassete and the device of throw-over gear
Counting circuit is used to receive and add up about the pulse signal of rotational speed, and produces the control wave corresponding to accumulated value, the umber of pulse at this control wave indication per second place and
Output circuit is used for control wave is outputed to described tape transport mechanism.
5, record as claimed in claim 4 and playback system, wherein said summation circuit comprises a CPU, and the ROM storage that is connected to described CPU is used for the conversion table of accumulated counts value and per second place umber of pulse.
6, record as claimed in claim 5 and playback system, wherein said ROM are not stored in not schedule time place from the accumulated counts value of an end of tape and per second calculated value in the schedule time.
7, record as claimed in claim 4 and playback system, wherein said tape cassete also comprises a rotation control circuit, it receives control wave, and controls described tape transport mechanism.
8, record as claimed in claim 6 and transcriber, wherein said CPU are connected to a non-volatile ram that is included in the described tape cassete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99108882 CN1241775A (en) | 1998-06-26 | 1999-06-25 | Tape cartridge of recording and reproducing apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP180055/1998 | 1998-06-26 | ||
| CN 99108882 CN1241775A (en) | 1998-06-26 | 1999-06-25 | Tape cartridge of recording and reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1241775A true CN1241775A (en) | 2000-01-19 |
Family
ID=5273571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99108882 Pending CN1241775A (en) | 1998-06-26 | 1999-06-25 | Tape cartridge of recording and reproducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1241775A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217047B (en) * | 2004-05-06 | 2011-02-16 | 三星电子株式会社 | Information recording medium, recording/reproducing method and apparatus, and host apparatus |
-
1999
- 1999-06-25 CN CN 99108882 patent/CN1241775A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217047B (en) * | 2004-05-06 | 2011-02-16 | 三星电子株式会社 | Information recording medium, recording/reproducing method and apparatus, and host apparatus |
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