JPH0589659A - Magnetic recording and replay apparatus - Google Patents

Abstract

(57) [Summary] The present invention provides a plurality of recording heads, which are provided so as to be stationary with respect to a recording medium, are two-dimensionally arranged, and perform recording on the recording medium, and the recording medium. A plurality of reproducing heads that are provided so as to be stationary with respect to each other and are two-dimensionally arranged to reproduce the recording medium; and a plurality of recording heads that sequentially drive the recording heads to perform recording on the recording medium. A magnetic recording / reproducing apparatus comprising: one drive circuit; and a second drive circuit that sequentially drives the plurality of reproducing heads to reproduce information written in the recording medium. According to the present invention, it is possible to provide a magnetic recording / reproducing apparatus which does not have a movable part, is small and has high reliability, and can be accessed at high speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus capable of recording / reproducing on / from a recording medium in a stationary state.

[0002]

2. Description of the Related Art A conventional magnetic recording / reproducing apparatus has a recording medium and a magnetic head, and performs recording / reproducing by moving the recording medium and the magnetic head relatively. For example, the recording medium is rotated, and recording / reproduction is performed on the recording medium by the magnetic head.

[0003]

As described above, in the conventional magnetic recording / reproducing apparatus, since it is necessary to move the recording medium and the magnetic head relative to each other, a movable portion is required, and the apparatus can be made compact and highly reliable. I was evading. There is also a problem that the data read speed is limited by the speed of the movable part.

The present invention has been made in view of such a problem, and the object thereof is to have no movable part,
An object of the present invention is to provide a magnetic recording / reproducing apparatus which is compact and has high reliability and which can be accessed at high speed.

[0005]

In order to achieve the above-mentioned object, the present invention provides a plurality of units which are provided so as to be stationary with respect to a recording medium and which are arranged two-dimensionally and perform recording on the recording medium. Recording heads, a plurality of reproducing heads that are provided so as to be stationary with respect to the recording medium, are two-dimensionally arranged, and perform reproduction on the recording medium, and sequentially drive the plurality of recording heads. A magnetic recording / reproducing apparatus comprising: a first drive circuit for recording on the recording medium; and a second drive circuit for sequentially driving the plurality of reproducing heads to reproduce information written on the recording medium. is there.

[0006]

According to the present invention, since the recording head and the reproducing head are stationary with respect to the recording medium, there is no moving part, the size is small, the reliability is high, and high-speed access is possible.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a schematic structure of a magnetic recording / reproducing apparatus according to an embodiment of the present invention. As shown in FIG. 1, the head 1 is in close contact with the recording medium 3 and is stationary with respect to the recording medium 3.

FIG. 2 is a block diagram showing the configuration of this magnetic recording / reproducing apparatus. This magnetic recording / reproducing apparatus has a head 1, a recording X driver 9, a recording Y driver 11, a reproducing X driver 13, and a reproducing Y driver 15. , Controller 17,
It has a data output terminal 19. In the head 1, a plurality of recording units 5 and reproducing units 7 are connected to the matrix wirings X and Y.

That is, as shown in FIG. 3, the recording section 5 is provided so as to be connected to the wiring X ₁₁ and the wiring Y ₁₁ . Similarly, the recording unit 5 is provided so as to be connected to the wiring X ₁₂ and the wiring Y ₁₁ . The recording unit 5 includes a recording coil 21 and a diode 23. The diode 23 is provided to prevent backflow.

Further, as shown in FIG. 4, the reproducing section 7 is provided so as to be connected to the wiring X ₂₁ and the wiring Y ₂₁ . Similarly, the reproducing unit 7 is provided so as to be connected to the wiring X ₂₂ and the wiring Y ₂₁ . The reproducing section 7 includes an MR element 25 and a diode 27. The diode 27 is provided to prevent backflow.

FIG. 5 is a diagram showing a schematic structure of a perpendicular recording head 29 having the recording section 5 and the reproducing section 7. The recording coil 21 is wound around the MR element 25. One end of the recording coil 21 is connected to the wiring X ₁₁ , and the other end is connected to the wiring Y ₁₁ . One end of the MR element 25 has a wiring X _21.
, And the other end is connected to the wiring Y ₂₁ . Note that FIG.
In, the diodes 23 and 27 are not shown.

When a voltage is applied between the wiring X ₁₁ and the wiring Y _11, a magnetic flux is generated and the recording medium 3 is magnetized as shown in FIG. The state in which the recording medium 3 is magnetized in this manner is set to "1". Further, the state in which the recording medium 3 is not magnetized is set to "0".

When a current is passed between the wiring X ₂₁ and the wiring Y ₂₁ depending on the presence or absence of magnetization of the recording medium 3, the MR element 25 changes the resistance value and reads the magnetization state of the recording medium 3.

FIG. 6 is a diagram showing the detailed structure of the portion A in FIG. That is, a plurality of perpendicular recording heads 29 shown in FIG. 5 are arranged along the wiring XY.

FIG. 7 is a sectional view of the perpendicular recording head 29 constructed by an integrated circuit. Reference numeral 31 indicates a substrate, and reference numeral 33 indicates an insulating layer. For example, the wiring Y ₂₁ is
It is connected to the wiring X ₂₁ along the dotted line in the figure through the diode 27 and the MR element 25.

The wiring Y ₁₁ is connected to the wiring X ₁₂ via the diode 23 and the recording coil 21.

Next, the operation of this magnetic recording / reproducing apparatus will be described.

First, the recording operation will be described. The controller 17 controls the recording X driver 9 to set the wirings X ₁₁ , X _12, ... To the ground level. Then, the controller 17 connects the wiring Y ₁₁ via the recording Y driver ₁₁ ,
An attenuation current as shown in FIG. 8 is applied to Y ₁₂ . As a result, the recording medium 3 becomes all "0".

Next, the controller 17 applies a scanning pulse as shown in FIG. 9 to the wirings X ₁₁ , X _12, ... Through the recording X driver 9. Further, the controller 17 applies a data pulse as shown in FIG. 10 to the wirings Y ₁₁ , Y _12, ... Through the recording Y driver 11. The voltage values of the scan pulse and the data pulse when turned on are set to be equal. The data pulse is generated based on the write data sent to the controller 17 from the outside. When such a pulse is applied, no voltage difference is generated between the wiring X ₁₁ and the wiring Y _11, no current is applied to the recording coil 21, and no magnetic flux is generated.

On the other hand, a voltage difference is generated between the wiring X ₁₂ and the wiring Y ₁₂ , and a current is applied to the recording coil 21,
A magnetic flux is generated and the recording medium 3 is magnetized.

FIG. 11 shows data recorded on the recording medium 3 when the pulses shown in FIGS. 9 and 10 are applied.

FIG. 12 is a diagram schematically showing how the recording medium 3 is magnetized by applying the above-mentioned pulse.
In this way, data recording is performed on the entire surface of the recording medium 3. Next, the operation during reproduction will be described. The controller 17 connects the wiring X ₂₁ via the reproduction X driver 13,
A scanning pulse as shown in FIG. 9 is applied to X ₂₂ ... When such a scanning pulse is applied, the resistance value of each MR element 25 changes according to the magnetization state of the recording medium 3, so that the reproducing Y driver 15 changes this resistance value by changing the voltage value. And outputs the data as shown in FIG. Then, the data output terminal 19 outputs the data shown in FIG.

Thus, according to the present embodiment, the head 1 is stationary with respect to the recording medium 3, and since this magnetic recording / reproducing apparatus has no movable portion, it is small in size and can be accessed at high speed, and the reliability is further improved. Have.

As shown in FIG. 14, a horizontal recording head (in-plane recording head) 3 is used instead of the vertical recording head 29.
5 can also be used.

[0026]

As described above in detail, according to the present invention, it is possible to provide a magnetic recording / reproducing apparatus which does not have a movable part, is small and has high reliability, and can be accessed at high speed.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a magnetic recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of a magnetic recording / reproducing apparatus of this embodiment.

FIG. 3 is a schematic diagram near a recording unit 5.

FIG. 4 is a schematic diagram of the vicinity of a reproducing unit 7.

FIG. 5 is a diagram showing a configuration of a vertical recording head 29.

FIG. 6 is an explanatory diagram when a recording unit and a reproducing unit are created using the vertical recording head 29.

FIG. 7 is a cross-sectional view of the head 1 configured by an integrated circuit.

FIG. 8 is a diagram showing an erase current.

FIG. 9 is a diagram showing scan pulses applied to a wiring X.

FIG. 10 is a diagram showing a data pulse applied to a wiring Y.

FIG. 11 is a diagram showing a recording state of the recording medium 3.

FIG. 12 is a diagram showing a recording state of the recording medium 3.

FIG. 13 is a diagram showing reproduction data.

FIG. 14 is a diagram showing a horizontal recording head.

[Explanation of symbols]

 1 ... Head 3 ... Recording medium 5 ... Recording unit 7 ... Reproduction unit 9 ... Recording X driver 11 ... Recording Y driver 13 ... Reproduction X driver 15 ... Reproduction Y Driver 17 ………… Controller 21 ………… Recording coil 23 ………… Diode 25 ………… MR element 27 ………… Diode

Claims (6)

[Claims] 1. A plurality of recording heads provided so as to be stationary with respect to a recording medium and arranged two-dimensionally to perform recording on the recording medium, and provided so as to be stationary with respect to the recording medium. A plurality of reproducing heads that are arranged two-dimensionally and reproduce on the recording medium; a first drive circuit that sequentially drives the plurality of recording heads to record on the recording medium; 2. A magnetic recording / reproducing apparatus comprising: a second drive circuit which sequentially drives the reproducing head of 1. to reproduce the information written in the recording medium. 2. The magnetic recording / reproducing apparatus according to claim 1, wherein the recording head performs horizontal recording on the recording medium. 3. A magnetic recording / reproducing apparatus according to claim 1, wherein the recording head performs perpendicular recording on the recording medium. 4. The magnetic recording / reproducing apparatus according to claim 1, wherein the reproducing head has an MR element. 5. The magnetic recording / reproducing apparatus according to claim 1, wherein the plurality of recording heads are arranged in matrix. 6. The magnetic recording / reproducing apparatus according to claim 1, wherein the plurality of reproducing heads are arranged in a matrix.