JPH10132585A - Vehicular information recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display part to display vehicle traveling information such as fuel efficiency. SOLUTION: When a fuel tank is refueled at a service station, a recording memory card 503 holding a vehicle navigation map in store records information including a refueling date, a quantity of supplied gasoline, a quantity of consumed gasoline since a last refueling date, a location of the service station, and data on peripheral tourist attractions. The recording memory card 503 is set into a recording memory card slot 504, and then a display part 506 selectively displays the required information, such as the data regarding famous sight-seeing site, on the vehicle navigation map. A central control part 505 calculates fuel efficiency from both vehicle traveling distance and the quantity of gasoline consumption, so that the display part 506 displays fuel efficiency information. Moreover, the central control part 505 predicts deterioration in vehicular performance from the fuel efficiency information and the like, so that the display part 506 displays predictive information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device for displaying or recording information relating to vehicle travel.

[0002]

2. Description of the Related Art Hitherto, a car navigation system for supporting a driver in running a vehicle has been commercially available.

[0003]

However, currently available car navigation systems only visually display the current position of the vehicle, and other information on vehicle running such as fuel efficiency is provided to the user. Inside. The present invention has been made in view of the above problems, and provides an apparatus for displaying information on vehicle running such as fuel efficiency.

[0004]

According to the present invention, claim 1 is provided.
Means for detecting the vehicle travel distance, means for recording the amount of stored energy, means for recording the amount of energy consumption, means for calculating the energy consumption rate based on the vehicle travel distance and the amount of energy consumption, Is provided.

According to a second aspect of the present invention, in the first aspect, there is provided means for recording vehicle traveling distance information detected by the vehicle traveling distance detecting means and consumption rate information derived by the energy consumption rate calculating means. It is characterized by the following. A third aspect of the present invention is a device for recording travel information in a normal state of a vehicle according to the second aspect, the travel information in the normal state, and the vehicle travel distance detected by the vehicle travel distance detection means. Means for comparing the information with the consumption rate information derived by the energy consumption rate calculation means, and means for detecting the current state of the vehicle and predicting performance degradation based on the comparison means. It is.

A fourth aspect of the present invention is characterized in that, in the third aspect, a means for displaying information is provided, and the performance deterioration prediction information predicted based on the performance deterioration prediction means is displayed on the display means. It is. A fifth aspect of the present invention is characterized in that, in the third aspect, means for recording performance degradation prediction information predicted based on the performance degradation prediction means is provided.

According to a sixth aspect of the present invention, in any one of the second and fifth aspects, the recording means records on a high-density information recording medium. According to claim 7, in claim 6, the high-density information recording medium is:
It is a card. Claim 8
According to a sixth aspect of the present invention, the high-density information recording medium is a magneto-optical disk.

A ninth aspect of the present invention is characterized in that, in the sixth aspect, the high-density information recording medium is a magneto-optical tape. A tenth aspect is characterized in that a means for recording tourist attraction information and a display means for displaying the tourist attraction information are provided. Claim 11 is Claim 10
, A car navigation system is provided, and the tourist attraction information is displayed on a car navigation map.

According to a twelfth aspect, in the eleventh aspect, means for selecting desired tourist attraction information from the tourist attraction information is provided, and based on the selected tourist attraction information, a tourist attraction position is determined by the car navigation system. The route is displayed on a map, and a route from the current vehicle position to the selected tourist attraction position is displayed on the car navigation map.

According to a thirteenth aspect, in the twelfth aspect, a route from the current vehicle position to the selected tourist attraction position is displayed on the car navigation map based on VICS information. Things. According to a fourteenth aspect, in the tenth aspect, the means for recording the tourist attraction information is recorded on a high-density information recording medium.

According to a fifteenth aspect, in the fourteenth aspect, the high-density information recording medium is a card. According to a sixteenth aspect, in the fourteenth aspect, the high-density information recording medium is a magneto-optical disk. According to a seventeenth aspect, in the fourteenth aspect, the high-density information recording medium is a magneto-optical tape.

[0012] The present invention is further characterized in that: means for determining a starting position and an arriving position in a desired vehicle traveling section; means for calculating a fee based on the vehicle traveling distance and the vehicle traveling time in the vehicle traveling section; There is provided means for recording departure position information and arrival position information of the vehicle traveling section, and the fee information calculated by the fee calculation means.

A ninth aspect of the present invention is characterized in that, in the eighteenth aspect, the recording means performs recording on a high-density information recording medium. According to a twentieth aspect, in the nineteenth aspect, the high-density information recording medium is a card. According to a twenty-first aspect, in the nineteenth aspect, the high-density information recording medium is a magneto-optical disk.

According to a twenty-second aspect, in the nineteenth aspect, the high-density information recording medium is a magneto-optical tape. According to a twenty-third aspect, in the eighteenth aspect, the recording means performs recording on paper.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a magneto-optical recording medium used in this embodiment will be described. 2. Description of the Related Art A magneto-optical recording medium is a magneto-optical recording medium related to magnetic domain amplification in which a signal recorded on a recording layer is transferred to a reproducing layer to expand a magnetic domain and reproduce the signal. In a magneto-optical recording medium capable of reproducing a signal by magnetic domain amplification, the domain of a recorded signal may be small, and a magneto-optical recording medium with higher density recording can be put to practical use. By realizing the magneto-optical recording medium by the magnetic domain amplification, a recording capacity of 14 GB, that is, 20 times that of a compact disk (CD),
3 times the digital video disk (DVD), DVD-
A recording capacity five times that of a ROM can be realized. As a result, a 12 cm disc can be recorded for 5 hours with the image quality comparable to that of a DVD, and two MDs can be recorded on a 1-yen disc, and one CD can be recorded on a 30-40 mmφ disc. It is also possible to realize the miniaturization of the disk, for example. Therefore, the present invention relates to the application of a new magneto-optical recording medium accompanying the increase in recording capacity and a system such as a recording / reproducing apparatus. First Embodiment An example in which a magneto-optical recording medium is applied to a card will be described with reference to FIG. A recording area 2 in which a signal can be recorded and / or reproduced is provided in a partial area of the card 1. The size of the area where the recording area 2 is provided is 10 mm × 10 m
m, which may be affixed to the body of the card 1,
It may be incorporated. In this 10 mm square area, 10
0 MB of information can be recorded. Recording area 2 is 6
Are divided into small blocks 2a, 2b, 2c,... A track composed of a land / groove is formed in each of the blocks 2a, 2b, 2c,..., And a signal is recorded on the land and the groove. Recording area 2
Is not limited to 600 μm square and may be 1 mm square or less. The shape of the recording area 2 is not limited to a quadrangle, but may be a polygon such as a triangle, a pentagon, a hexagon, an octagon, or a circle.

Referring to FIG. 2, a mechanism for recording or reproducing data on or from recording area 2 provided on card 1 will be described. The card 1 is moved on the rail 4a in the direction of arrow 5 by the card feeding stepping motor 3a, and the recording area 2 reaches an area where the optical head 6 and the magnetic head 7 are provided to face each other. After the recording area 2 reaches an area where the optical head 6 and the magnetic head 7 are provided to face each other, of the blocks 2a, 2b, 2c,. The optical head 6 and the magnetic head 7 are moved on the rail 4b by the track-direction feed stepping motor 3b so that the laser beam from the optical head 6 is irradiated on the rail 4b. The reproduction of the block 2a is performed by a laser beam traveling on lands and grooves by the movement of an actuator (not shown) in the optical head 6. The size of each block is 0.6 to 1.0 on one side.
mm, so that the actuator can move. The scanning direction of the laser beam may be a reciprocating motion in the direction of arrow 5 or a zigzag motion. Figures 3 and 4
The scanning method of the laser beam will be described with reference to FIG.
The scanning of the laser beam in the direction of the arrow 5 is performed by the objective lens 3.
1 is performed by a galvanometer mirror 32 and a polygon mirror 41 provided on the front side of the first mirror. The galvanomirror 32 scans the laser beam by rotating in a predetermined range around a support shaft (not shown). The polygon mirror 41 is provided with an octagonal reflecting mirror, and reflects a laser beam in different directions on different reflecting surfaces by rotating about a support axis. As a result, laser beam scanning can be performed.

When the reproduction of the block 2a is completed, the optical head 6 and the magnetic head 7 are moved by the track-direction feed stepping motor 3b so that the next block 2b can be irradiated with a laser beam. This movement is performed in a direction perpendicular to the arrow 5, and the movement distance is about the size of a block. After moving to the next block 2b,
Reproduction is performed in the same manner as described in the block 2a. After the block in the first column is reproduced by this repetition, the block is moved to the block in the next column. This movement is performed by moving the card 1 by one block in the direction of the arrow 5 by the card feeding stepping motor 3a. . Thus, the reproduction of the recording area 2 is performed.

The means for reproducing the recording area provided on the card is not limited to the above means, but may be the means shown in FIG. A fixed optical block 171 and a three-dimensional actuator 17 are included in an apparatus 170 for reproducing a pen-shaped signal.
2. The objective lens 173 is arranged. The laser beam emitted from the fixed optical block 171 at a predetermined position of each of the blocks 2a, 2b, 2c... Is fixed to the three-dimensional actuator 172.
Irradiated through 73. Irradiated laser beam 17
Reference numeral 4 indicates that a signal in one block is reproduced by the movement of the three-dimensional actuator 172. Thereafter, when the next block is reproduced, the device 170 is moved to a desired block position, and the signal in the desired block is reproduced.

The reproduction of each block need not be performed in order from the first row, but may be performed spirally from the outer periphery to the inner periphery or from the inner periphery to the outer periphery. Also,
Further, the shape of the block provided in the recording area 2 is not limited to a square, but may be a circle or a polygon. The configuration of the optical system used for reproducing the card 1 is as shown in FIG.

The recording area formed on the card may be a recording area 6a provided on the card 6 with reference to FIG. Recording and reproduction are performed on the card 6 in the same manner as described above. Reproduction when the recording area provided on the card is circular will be described with reference to FIGS. Turntable 111
The recessed portion 118 allows the card 114 to be mounted.
Are provided, and the turntable 111 is configured to be rotated by the rotary motor 110. A magnet 117 is disposed in the recess 118 so as to face a recording area 115 provided on the card 114, and is used for recording or reproducing a signal. When a card 114 is mounted on the turntable 111 in the direction of arrow 113, the motor
, And the turntable 111 rotates. The card 114 is rotated by the rotation of the turntable 111, and reproduction is performed by the magnet 118 and the optical pickup 116 facing both surfaces of the recording area 115.

Referring to FIG. 13, a method of reproducing a signal by inserting a circular disk into a card and rotating the disk will be described. The disk 131 is inserted into the card 130, and when the card 130 is inserted into an area where the optical head 6 and the magnetic head 7 face each other, a shaft 134 fixed to the disk spindle motor 133 and rotatable by the disk spindle motor 133.
Is a hole 135 provided at the center of the disk 131.
Insert The rotation of the disk spindle motor 133 causes the disk 131 to rotate, and the optical head 6 and the magnetic head 7 reproduce signals. The radial movement of the disk 131 between the optical head 6 and the magnetic head 7 is performed by moving on rails 132 and 132.

Although the reproduction has been described above, the recording can be similarly performed. Second Embodiment With reference to FIG. 7, recording / reproducing of a tape-shaped magneto-optical recording medium will be described. The tape 74 is moved in the direction of arrow 72 by the tape feed motor 73, and the optical head 6 and the magnetic head 7 are moved on the rail 71 by the stepping motor 70 for track direction feed to move in a direction substantially perpendicular to the arrow 72. Let it. As a result, the laser beam reproduces a signal recorded in each area of the tape 74.

The optical head 6 for reproducing the tape 74
Is not limited to the one shown in FIG. 7, but may be one shown in FIG. The tape 74 is moved in the direction of the arrow 82, and the optical heads 81a, 8 radially arranged on the support 80.
1b, 81c,... Successively reproduce the recording area 74a formed in the tape 74 by rotating the rotary motor. One recording area 74a with one optical head 81a
When the reproduction of the optical heads 81a and 81b is completed, the next optical head 81b can reproduce the next recording area.
are arranged.

The recording area 74a may be composed of the above-described blocks. Further, it goes without saying that recording can also be performed by the above method. Third Embodiment With reference to FIG. 9, a method of mounting a circular disk on a carrier and rotating the carrier to rotate the disk to record or reproduce data will be described. A disc 92 is mounted on the carrier 93 so as to fit into a hole provided in the carrier 93. On the other side of the carrier 93 on which the disk is mounted, the magnets 91 are arranged so that N poles and S poles are alternately arranged as shown in FIG. 9B. The magnet 91
A coil 90 is arranged at a position facing the above as shown in FIG. 9 (c). When a current is applied to the coil 90, the magnetic field generated by the coil and the magnet 91 provided on the carrier 93
The carrier 93 rotates in a predetermined direction due to the repulsion, so that the disk 92 rotates. Except for this, the operation is the same as that of a normal disc reproducing operation.

Referring to FIG. 10, a method of recording or reproducing a disk by rotating the disk by rotating the outer periphery of the disk with rollers will be described. The disk 105 has two supports 102, 102 and the roller 10
It is supported at three points by 0. Supports 102, 10
2. The roller 100 is pressed against the disk 105 by a spring. Further, the roller 100 is connected to the rotating body 104 and the belt 103, and rotates as the rotating body 104 rotates. The roller 100 is the disk 1
Since the roller 105 is in contact with the outer peripheral portion of the disk 105, the disk 105 is rotated by the rotation of the roller 100. By the rotation of the disk 105, signals can be recorded / reproduced by the optical head 6 and the magnetic head 7 disposed on both sides of the disk. The attachment and detachment of the disk 105 is performed by the arm 10
This is performed by pushing the disk 105 in the direction of the arrow 106 according to 1, 101.

Unlike the conventional disk, the disk recorded or reproduced by the method described with reference to FIGS. 9 and 10 does not require a hole at the center of the disk, and records or reproduces a signal in the entire area of the disk. You can also. Fourth Embodiment With reference to FIGS. 14, 15, and 16, a method of recording or reproducing a signal by sandwiching a card provided with a recording area will be described. FIG. 14 shows the appearance of an apparatus for recording or reproducing a signal by inserting a card. Space part 1
When the card 143 is inserted into 42, the movable part 141 provided at a predetermined angle with the fixed part 140 moves in the direction of the arrow 145, and the card 143 is sandwiched. Details of the device are shown in FIGS. The movable unit 140 is provided with an optical unit 146 and magnets 147 and 147. In addition, the magnetic head 1 is
48 is provided, and when the card 143 is inserted into the space 142, a recording area 144 in the card 143 is provided.
Are opposed to the magnetic head 148 and the optical unit 146. In a configuration including the optical unit 146, a member for driving the optical unit 146, and a magnetic head 148 for generating a magnetic field, the magnetic head 148
Is movable in the direction of the arrow 145 to sandwich the recording medium and enable recording or reproduction of a signal.

The optical unit 146 includes the objective lens 14
9, an objective lens driving (focusing direction and tracking direction) member, a laser light source, a signal detection sensor, and optical components, which are not shown, are arranged. The optical unit 146 is held by leaf springs 147 and 147.
The leaf springs 150 and 151 are magnets 147 and 147.
The optical unit 146 is moved in the first direction by a force generated by a coil (not shown). Further, the leaf springs 150 and 151 are held by leaf springs 152 and 153. The leaf springs 152 and 153 are
As in the case of the plate spring 151, the force generated by the magnets 154 and 154 and a coil not shown
2,153 are moved in a second direction perpendicular to the first direction. As a result, the optical unit 146 moves in the first direction and the second direction. Card 143
At the stage where the optical unit 146 is
Starts focusing and tracking, and starts recording or reproducing data. When moving to the next recording area, the leaf springs 150, 151, 152, and 153 move respectively, and move the optical unit 146 to a target area.

The recording area described in the first, second, third and fourth embodiments has a recording density of 1 bit / μm ^{2 to} 5 bits.
00 bit / μm ² , preferably 100 bit
/ Μm ^{2 to} 300 bits / μm ² . Various recording media can be used for the recording area. For example, the magneto-optical recording medium may be inserted into a card or the like, or may be formed into a sheet and affixed to the card or the like.
For a circular medium, the diameter is in the range of 5 to 310 mm, preferably 10 to 70 mm.

Next, a reproducing mechanism, a reproducing apparatus, and recording on a magneto-optical recording medium by expanding magnetic domains in a magneto-optical recording medium used in the recording area described in the first to fourth embodiments will be described in detail. Fifth Embodiment An embodiment of the present invention will be described with reference to the drawings. FIG.
As shown in FIG. 1, a magneto-optical recording medium to which the present invention is applied is a substrate on which a light-transmitting substrate 226 such as glass or polycarbonate is formed.
a dielectric layer 225 made of iN, a reproducing layer 224 made of GdFeCo, a nonmagnetic layer 22 made of SiN / AlTi
3, a recording layer 222 made of TbFeCo and a protective layer 1 made of SiN are sequentially deposited. The dielectric layer 2
25 is 600-800 °, the thickness of the reproducing layer 224 is 50-1000 °, and the thickness of the non-magnetic layer 223 is 5 °.
0 to 300 °, and the thickness of the recording layer 222 is 500 to 30 °.
00Å, and the thickness of the protective layer 221 is 500〜1000Å.
It is. Each of the layers is formed by a magnetron sputtering method using Ar gas.

In the present invention, the reproduction layer 22
5 is not limited to GdFeCo, but GdFe or GdCo
Alternatively, the magnetic film may be made of TbCo or one element selected from Ho, Gd, Tb, and Dy and one element selected from Fe, Co, and Ni. Also,
Further, the nonmagnetic layer 223 is made of AlN, TiN, SiO ₂ or Al ₂ O _3, SiC, TiC, ZnO or SiAl instead of SiN.
It may be ON, ITO or SnO ₂ .
Further, the recording layer 222 is not limited to TbFeCo, but may include elements selected from Tb, Dy, and Nd and Fe, C
It may be a single-layer magnetic film or a single-layer magnetic film composed of an element selected from o and Ni. Also,
It may be a single-layer magnetic film or a multilayer magnetic film composed of one element of Pt and Pd and an element selected from Fe, Co and Ni.

When a laser beam is applied to a magneto-optical recording medium, a temperature distribution having a Gaussian distribution usually occurs on the medium as shown in FIG. A super-resolution magneto-optical recording medium capable of reproducing a magnetic domain smaller than a spot diameter of a laser beam by transferring a magnetization from a recording layer to a reproducing layer by providing a reproducing layer with a mask function by using this temperature distribution and applying the present invention to the present invention. I have. Therefore, the point different from the reproduction of the conventional super-resolution magneto-optical recording medium is that the reproduction is performed after the magnetization is transferred to the reproduction layer and the magnetic domain is enlarged. The wavelength of the laser beam used for reproduction is 680 to 830 nm, the numerical aperture of the objective lens for focusing the laser beam is 0.55 (allowable error ± 0.05), and the spot diameter of the laser beam is 1.0. (Tolerance ±
0.1) μm.

Referring to FIG. 19, a CAD (Center) in which a window for reading information is formed at the center of the laser beam.
The present invention using a super-resolution magneto-optical recording medium based on the “Aperture Detection” method will be described. In a super-resolution magneto-optical recording medium based on the CAD method, a magnetic layer that is an in-plane magnetic film at room temperature and a perpendicular magnetic film at a predetermined temperature or higher is used as a reproducing layer. The predetermined temperature is usually in the range of 100 to 170 ° C., and when the predetermined temperature is reached, a magnetic film is used which rapidly changes from an in-plane magnetization film to a perpendicular magnetization film. One index indicating how steeply the film changes from the in-plane magnetization film to the perpendicular magnetization film is a temperature coefficient C of the Kerr rotation angle. In the present invention, a magnetic film having a temperature coefficient C of 8.0 or more is used. I have. For details of the method of calculating the temperature coefficient C, see “Sumi et al.
Proceedings of the 3rd Joint Lecture on Applied Physics 27p-
PD-26 (1996) ". Referring to FIG. 19, as the magnetic film used for the reproducing layer 4a of the super-resolution magneto-optical recording medium 1910 by the CAD method, GdFeCo, G
dFe and GdCo are suitable. In addition, the nonmagnetic layer 223
Are SiN, AlN, TiN, SiO ₂ , Al ₂ O ₃ ,
SiC, TiC, ZnO, SiAlON, ITO, Sn
O ₂ is suitable. Further, as the recording layer 222, TbF
an element selected from eCo, Tb, Dy, and Nd and F
It may be a single-layer magnetic film or a multilayer magnetic film composed of an element selected from e, Co, and Ni. Further, a single-layer magnetic film or a multi-layer magnetic film composed of one element of Pt and Pd and an element selected from Fe, Co, and Ni may be used. When the laser beam is applied to the super-resolution magneto-optical recording medium 1910 by the CAD method, the magnetic domains 227 in the region where the temperature has reached the predetermined temperature or higher are transferred to the reproducing layer 224 via the non-magnetic layer 223, and
At 24, a magnetic domain 228 having the same magnetization as the magnetic domain 227 in the recording layer 222 appears. In this case, since the transfer from the recording layer 222 to the reproduction layer 224 is performed via the non-magnetic layer 223, the transfer is performed not by the exchange coupling force but by the magnetostatic coupling (FIG. 19A). Next, an external magnetic field Hep is applied to enlarge the magnetic domain transferred to the reproducing layer 224. The applied external magnetic field Hep is an alternating magnetic field. When the applied magnetic field Hep is in the same direction as the magnetization of the transferred magnetic domain 8, the magnetic domains 8 a and 8 b having the same direction as the magnetization of the magnetic domain 228 are generated in the regions adjacent to the magnetic domain 228. That is, the transferred magnetic domains 228 are enlarged (FIG. 19B). At this moment, it is detected as a reproduced signal by a reproducing device described later.

The magnitude of the applied external magnetic field Hep is determined as follows. Referring to FIG. 20, a curve 209 indicates a hysteresis curve of the magnetic film, Hc indicates a magnitude of a magnetic field necessary to make all magnetic domains of the magnetic film have the same direction,
Hn indicates the magnitude of the magnetic field necessary for enlarging the reversal magnetic domain when a magnetic domain exists in a part of the magnetic film. Therefore,
If the magnetic film does not have a reversal magnetic domain, it is magnetized along the curve 209 as the magnetic field applied from the outside increases. However, when the reversal magnetic domain exists first, it is magnetized along the curve 2013, and the magnetic domain expands when a magnetic field of Hn or more is applied from the outside. Therefore, in the present invention, the external magnetic field Hep required to enlarge the magnetic domains 228 transferred to the reproducing layer 4 may be Hn ≦ Hep ≦ Hc. FIG. 21 shows the read power dependence of Hn and Hc measured using the magneto-optical recording medium shown in FIG. The wavelength of the laser beam is 830 nm. When the reproducing power is in the range of 1.0 to 2.2 mW, there is a clear difference between Hn and Hc, so that H is determined according to each reproducing power.
The external magnetic field Hep may be determined between n and Hc. For example, when the reproducing power is 1.4 mW, 200 to 25
The external magnetic field Hep may be set during 0 Oe. Also,
According to FIG. 21, the external magnetic field Hep can be reduced as the reproducing power increases. The frequency of the alternating magnetic field is 0.5 to 2 MH
z.

After the magnetic domains are transferred to the reproducing layer 224 and the magnetic domains are expanded and reproduced by an external magnetic field, it is necessary to temporarily erase the expanded magnetic domains in order to transfer / enlarge and reproduce the next recording magnetic domain. is there. There are two erasing methods. One is a method using a minimum stable magnetic domain diameter determined according to the type of the magnetic film. Referring to FIG. 23, the minimum stable magnetic domain diameter rmin decreases as the temperature of the magnetic film increases,
In the case of GdFeCo used for the reproducing layer 224, the rmin at room temperature is 0.5 to 0.6 μm and the rmin at 120 ° C.
Is 0.1 μm. That is, a magnetic domain of 0.1 μm or more can be stably present at 120 ° C., but 0.1 μm at room temperature.
μm-sized magnetic domains can no longer exist stably,
Will disappear.

Another method of erasing the magnetic domain transferred / expanded on the reproducing layer 224 is described with reference to FIG. 24. The external magnetic field Hep applied when expanding the magnetic domain, that is, the magnetization direction of the transferred / expanded magnetic domain And applying a magnetic field Hsr in the opposite direction. In the above, the example using the super-resolution magneto-optical recording medium by the CAD method has been described. However, the present invention is not limited to this, and the RAD (Rear Aperture D)
super resolution magneto-optical recording medium or FAD (Front Aperture Det)
(Election) method may be used. In a super-resolution magneto-optical recording medium based on the RAD method, a window for reading a signal is formed behind a laser beam. Referring to FIG. 25, in a super-resolution magneto-optical recording medium 2511 based on the RAD method, a perpendicular magnetization film is used for the reproducing layer 4b, and the reproducing layer 4b is irradiated before the beam irradiation.
An initialization magnetic field, not shown, is applied to make the magnetization method b uniform. When the medium is irradiated with the laser beam, the magnetization of the magnetic domain 7a that has risen to a predetermined temperature or higher is magnetostatically coupled from the recording layer 222 through the nonmagnetic layer 223 to the magnetic domain 8a of the reproducing layer 4b.
transferred to c. The subsequent magnetic domain enlarging / erasing operation is shown in FIG.
The description is omitted because it is the same as that described above. As the reproducing layer 4b of the super-resolution magneto-optical recording medium 1911 by the RAD method, a magnetic film made of TbCo, Dy and one element selected from Fe, Co, and Ni is suitable. The nonmagnetic layer 223 is made of SiN, AlN, TiN, SiO ₂ , A
l ₂ O ₃ , SiC, TiC, ZnO, SiAlON, IT
O and SnO ₂ are suitable. Further, the recording layer 222 may be a single-layer magnetic film or a multilayer magnetic film composed of an element selected from TbFeCo, Tb, Dy, and Nd and an element selected from Fe, Co, and Ni. . Further, one element of Pt and Pd and Fe, Co, Ni
And a single-layer magnetic film or a multilayer magnetic film composed of an element selected from the above.

Referring to FIG. 26, also in super-resolution magneto-optical recording medium 2612 by the FAD method, a perpendicular magnetization film is used for reproducing layer 4c. This perpendicular magnetization film is irradiated with a laser beam and irradiated at a predetermined temperature (Curie temperature). If the temperature rises above the above, the magnetization is erased. In this medium, when a signal is recorded, the directions of magnetization of the recording layer 222 and the reproduction layer 4c match. When the laser beam is irradiated and the temperature of the reproducing layer 4c rises above a predetermined temperature, the magnetization of the region 8b is erased. Therefore, the signal is reproduced in front of the laser beam having a low temperature region by using the region 8d having the predetermined temperature or higher as a mask. The subsequent magnetic domain enlarging / erasing operation is the same as that described with reference to FIG. Super resolution magneto-optical recording medium 2 by FAD method
As the reproducing layer 4c of 612, TbCo, Dy and Fe, C
A magnetic film composed of one element selected from o and Ni is suitable. Further, as the nonmagnetic layer 223, SiN, A
1N, TiN, SiO ₂ , Al ₂ O ₃ , SiC, TiC, Z
nO, SiAlON, ITO, SnO ₂ are suitable.
Further, as the recording layer 222, TbFeCo, Tb, D
It may be a single-layer magnetic film or a multilayer magnetic film composed of an element selected from y and Nd and an element selected from Fe, Co and Ni. Further, a single-layer magnetic film or a multi-layer magnetic film composed of one element of Pt and Pd and an element selected from Fe, Co, and Ni may be used.

Referring to FIG. 37, the magneto-optical recording medium according to the present invention may be a super-resolution magneto-optical recording medium 3718 obtained by combining the RAD method and the FAD method. As the reproducing layer 4d of the super-resolution magneto-optical recording medium 3718, TbC
A magnetic film made of o, Dy and one element selected from Fe, Co, and Ni is suitable. The nonmagnetic layer 223 is made of Si
N, AlN, TiN, SiO ₂ , Al ₂ O ₃ , SiC, Ti
C, ZnO, SiAlON, ITO, SnO ₂ are suitable. Further, as the recording layer 222, TbFeCo, Tb
b, Dy, Nd and an element selected from Fe, Co, N
It may be a single-layer magnetic film or a multi-layer magnetic film composed of an element selected from i. Further, Pt, P
It may be a single-layer magnetic film or a multilayer magnetic film composed of one element of d and an element selected from Fe, Co, and Ni. Before the super-resolution magneto-optical recording medium 3718 is reproduced, the reproducing layer 4d is magnetized in a fixed direction by an initialization magnetic field (not shown). Thereafter, when the super-resolution magneto-optical recording medium 3718 is irradiated with a laser beam, the reproducing layer 4
In the high temperature section 3719 of d, the magnetization is erased, and
The magnetic domain 3720 on the front side is the magnetic domain 37 of the recording layer 222.
Since it is magnetized in the same direction as 21, it can be reproduced by enlarging the magnetic domain 3720. The characteristics of the magnetic film used for the reproducing layer 4d include the recording layer 222
There is a temperature at which the magnetization is transferred from the substrate and a temperature at which the magnetization is erased at a temperature higher than the temperature.
To 120 ° C., and the temperature at which the magnetization is erased is 130 to 170 ° C. The magnitude of the initialization magnetic field before the start of the reproducing operation is 1 kOe or less.

Next, a reproducing apparatus for a magneto-optical recording medium according to the present invention will be described. Referring to FIG. 27, magneto-optical recording medium 2710 is reproduced by irradiating a laser beam from optical head 36 and applying a magnetic field from magnetic head 37. The reproduced signal and the error signal optically reproduced by the optical head 36 are respectively converted into a reproduced signal amplifier circuit 40 and a servo circuit 39.
Sent to The reproduced signal is amplified by the reproduced signal amplifier circuit 40 and sent to the low-pass circuit 41. The reproduction signal sent to the low-pass circuit 41 is integrated by the low-pass circuit 41 and sent to the decoder 43 and the clock generation circuit 42. The clock generated by the clock generation circuit 42 is sent to the servo circuit 39, the first synchronization signal generation circuit 44, the second synchronization signal generation circuit 45, and the decoder 43. The servo circuit 3
Reference numeral 9 controls the objective lens in the optical head 36 to rotate the spindle motor 38 at a predetermined number of revolutions based on the sent error signal and clock, and performs tracking servo and focus servo. The decoder 43 demodulates a signal modulated at the time of recording in synchronization with the transmitted clock, and outputs a demodulated reproduced signal as reproduced data. The first synchronizing signal generating circuit 44 generates a synchronizing signal for irradiating a pulsed laser beam based on the transmitted clock, and sends the synchronizing signal to the laser driving circuit 35. The laser drive circuit 35 controls the optical head 36 based on the transmitted synchronization signal to pulse the reproduction laser beam. The second synchronizing signal generating circuit 45 generates a synchronizing signal for applying a pulsed magnetic field based on the transmitted clock, and sends the synchronizing signal to the magnetic head driving circuit 34. The magnetic head drive circuit 34 controls the magnetic head 37 based on the transmitted synchronization signal to pulse the applied magnetic field. In addition, RAD
When the super-resolution magneto-optical recording medium 11 is reproduced, the magnetic head 37 is controlled by the magnetic head drive 34 before the reproduction operation starts, and the magnetization of the reproducing layer of the super-resolution magneto-optical recording medium 11 is completely reduced. It is necessary to initialize in the direction of the initialization magnetic field. Other operations are the same as above. In this case, the applied initialization magnetic field is 1 k
The range is Oe or less.

There are three clock generation methods in the clock generation circuit 42. The first method is self-PLL synchronization, the second method is external PLL synchronization, and the third method is two-period sampling. Referring to FIG. 28, the self-PLL synchronization, which is the first method, is to generate a clock in accordance with a reproduced signal. Referring to FIG. 29, in the external PLL synchronization, which is the second method, pits 10p are provided at regular intervals in the land 10R (or groove) of the magneto-optical recording medium, and the pits 10p are optically detected. The clock is generated in accordance with the detected cycle. In this case, what is provided on the land 10R at a constant period need not be limited to pits, but may be optically detectable. Referring to FIG. 30, the two-period sampling, which is the third method, is to generate a clock having a frequency higher than the unit bit so that one or more clocks are inserted between the unit bits. In the present invention, when the applied magnetic field and the laser beam are pulsed, the clock may be generated using any of the above three methods.

The magneto-optical recording medium is reproduced by applying / irradiating a magnetic field and a laser beam. In this case, since each of the magnetic field and the laser beam can select either “continuous” or “pulse”, the following four combinations are available. (1) Laser beam: continuous light, magnetic field: continuous magnetic field (2) Laser beam: continuous light, magnetic field: pulse (3) Laser beam: pulse, magnetic field: continuous magnetic field (4) Laser beam: pulse, magnetic field: pulse In the case of 1), the relationship between the irradiation of the laser beam and the application of the magnetic field does not matter, so that no particular explanation is required. In the case of the above (2), referring to FIG. 31, the external magnetic field Hep applied in the process of magnetic domain expansion and the external magnetic field Hsr applied in the process of magnetic domain annihilation are not equal in magnitude and the external magnetic field Hep Is smaller than the external magnetic field Hsr. The time T1 for magnetic domain expansion is shorter than the time T2 for magnetic domain disappearance, and 0.15 ≦ T1 /
It is determined so as to satisfy (T1 + T2) ≦ 0.6. In the case of the above (3), the duty of the pulse of the laser beam is in the range of 20 to 70%. Further, the above (4)
In the case of, with reference to FIG. 32, in each of T1 and T2, a laser beam is irradiated so that the laser beam is turned ON / OFF once, and a magnetic field is applied. In the present invention, any of the above methods may be used.

Referring to FIG. 33, the dependence on the applied magnetic field when the laser beam is made continuous light and the magnetic field is pulsed for reproduction is shown. In this case, the structure of the magneto-optical recording medium is the same as that shown in FIG. 22, and the laser beam has a wavelength of 830.
nm, the power is 1.65 mW, and the linear velocity of the magneto-optical recording medium is 1.7 m / sec. Also, the recording is 0.4μ.
This was done by recording m domains at equal intervals. The duty of the pulse of the magnetic field is T1 / T2: 1. As the externally applied magnetic field increases, the detected signal intensity increases, and reaches a saturation level at 260 Oe. The increase in the reproduction signal by the application of the external magnetic field indicates that the magnetic domain transferred from the recording layer to the reproduction layer is expanded. Sixth Embodiment In the fifth embodiment, the magnetic domains transferred from the recording layer to the reproducing layer are enlarged by applying an external magnetic field,
In the sixth embodiment, a description will be given of an embodiment in which the magnetic domain transferred from the recording layer to the reproducing layer is enlarged and reproduced without applying an external magnetic field.

Referring to FIG. 34, the structure of the magneto-optical recording medium according to the second embodiment is such that a dielectric layer 22 made of SiN is formed on a transparent substrate 226 made of glass, polycarbonate or the like.
5, a reproducing layer 4A made of GdCo, a nonmagnetic layer 3A made of SiN, a recording layer 222 made of TbFeCo,
Is a structure in which a protective layer 221 made of is sequentially deposited. The magnetic film used for the reproducing layer 4A is a material whose magnetic domains are larger than the magnetic domains of the recording layer 222. Therefore, when the magnetization of the recording layer 2 is transferred to the reproducing layer 4A via the nonmagnetic layer 3A, the magnetic domain of the recording layer 222 can be reproduced as a large magnetic domain without expanding the magnetic domain by applying an external magnetic field. . The structure of the magneto-optical recording medium according to the sixth embodiment is such that Gd is provided between the non-magnetic layer 3A and the reproducing layer 4A.
A structure in which an intermediate magnetic layer made of FeCo is inserted may be used.

Each of the above layers is formed by magnetron sputtering using Ar gas, and the conditions for forming each layer are the same as in FIG. 39 of the first embodiment. In the sixth embodiment, a super-resolution magneto-optical recording medium based on a CAD system is used as the magneto-optical recording medium. Referring to FIG. 35, a CAD-based super-computer comprising a recording layer 222 on which signals are recorded, a non-magnetic layer 3A, and a reproducing layer 4B which becomes an in-plane magnetic film at room temperature and a perpendicular magnetic film at a predetermined temperature or higher. When the resolution magneto-optical recording medium 3514 is irradiated with a laser beam, the magnetization of the magnetic domain 3515 recorded in the region heated to a predetermined temperature or higher is changed via the nonmagnetic layer 3A to the magnetic domain 35 of the reproducing layer 4B.
16 is transferred. In this case, from the magnetic domain 15 to the magnetic domain 351
The transfer to 6 is performed by magnetostatic coupling. As a result, the entire magnetic domain 3516 of the reproducing layer 4B is magnetized downward. Therefore, the magnetic domains transferred from the recording layer 222 to the reproducing layer 4B can transfer larger magnetic domains to the reproducing layer without the process of expanding the magnetic domains by applying a magnetic field from the outside without the magnetic domain. After the magnetic domain 3515 is reproduced, the irradiation position of the laser beam is changed to the magnetic domain 3517 to be reproduced next.
In this case, the effective magnetic anisotropy of the magnetic domain 3516 decreases, and the magnetization of the magnetic domain 3516 is directed to the in-plane direction.
When the magnetic domain 3517 to be reproduced next and the region of the magnetic domain 3516 on the magnetic domain 3517 reach a predetermined temperature or higher, the effective magnetic anisotropy of the magnetic domain 3516 increases, and the upward magnetization is transferred. , The signal of the magnetic domain 3517 is reproduced. After the reproduction, the temperature becomes low, and the magnetization of the magnetic domain 3516 faces in the plane. By repeating this, the super-resolution magneto-optical recording medium 3514 by the CAD method is reproduced. The reproducing layer 4
The magnetic film used for B becomes an in-plane magnetic film at room temperature and becomes a perpendicular magnetic film at a predetermined temperature or higher, and the magnetic domain may be any material as long as it is larger than the magnetic domain of the recording layer 222.
A magnetic film composed of an element selected from among the above is suitable.
Further, as the recording layer 222, TbFeCo, Tb,
It may be a single-layer magnetic film or a multilayer magnetic film composed of an element selected from Dy and Nd and an element selected from Fe, Co and Ni. Further, a single-layer magnetic film or a multi-layer magnetic film composed of one element of Pt and Pd and an element selected from Fe, Co, and Ni may be used.

The predetermined temperature at which the in-plane magnetization film changes to the perpendicular magnetization film is in the range of 140 to 180 ° C., and the temperature coefficient C indicating the sharpness of the change from the in-plane magnetization film to the perpendicular magnetization film.
Is 8.0 or more as in the fifth embodiment. The super-resolution magneto-optical recording medium 3514 is not limited to the structure shown in FIG. 35, and may have a structure in which a magnetic film that becomes an in-plane magnetic film at room temperature and a perpendicular magnetic film at a predetermined temperature or higher is inserted instead of the nonmagnetic layer 3A. . Referring to FIG. 38, super-resolution magneto-optical recording medium 38
Numeral 22 comprises a recording layer 2, an intermediate magnetic layer 3C, and a reproducing layer 4C. The intermediate magnetic layer 3C has the same size of magnetic domains as the recording layer 222, and changes from an in-plane magnetic film to a perpendicular magnetic film at a predetermined temperature or higher. Is applied. GdFeCo, GdFe, and GdCo are suitable for the intermediate magnetic film 3C.
Further, the reproducing layer 4C also changes from an in-plane magnetic film to a perpendicular magnetic film at a predetermined temperature or higher, and its temperature region is 100 to 100 ° C.
170 ° C. range. In the magneto-optical recording medium having this structure, the reproduction characteristic is determined by the steep change of the intermediate magnetic layer 3C from the in-plane magnetic film to the perpendicular magnetic film. Therefore, the temperature coefficient C of the magnetic film used for the intermediate magnetic layer 3C is 8.0 or more.

When the super-resolution magneto-optical recording medium 3822 is irradiated with a laser beam and the temperature of the magnetic domain 3823 of the recording layer 222 is raised, the magnetization of the magnetic domain 3823 is transferred to the magnetic domain 3824 of the intermediate magnetic layer 3C by exchange coupling force. Are further transferred to the magnetic domain 3825 of the reproducing layer 4C. As a result, the small magnetic domains 3823 of the recording layer 222 are reproduced as the large magnetic domains 3825 of the reproducing layer 4C. When the intermediate magnetic layer 3C is used, it is not necessary to apply an external magnetic field regardless of whether an in-plane magnetic film or a perpendicular magnetic film is used as the reproducing layer.

In the sixth embodiment, it is not necessary to apply an external magnetic field for enlarging / erasing the magnetic domain transferred to the reproducing layer. Therefore, it is sufficient to irradiate only the laser beam to reproduce the magneto-optical recording medium, and the method of irradiating the laser beam includes a method of irradiating continuous light and a method of irradiating pulse light. The duty for pulsed light is 20
７０70%.

Referring to FIG. 36, a reproducing operation of the super-resolution magneto-optical recording medium according to the sixth embodiment will be described. The magneto-optical recording medium 3514 by the CAD system is reproduced by irradiating a laser beam from the optical head 36. The reproduced signal and the error signal optically reproduced by the optical head 36 are respectively converted into a reproduced signal amplifier circuit 40 and a servo circuit 39.
Sent to The reproduced signal is amplified by the reproduced signal amplifier circuit 40 and sent to the low-pass circuit 41. The reproduction signal sent to the low-pass circuit 41 is integrated by the low-pass circuit 41 and sent to the decoder 43 and the clock generation circuit 42. The clock generated by the clock generation circuit 42 is sent to the servo circuit 39, the first synchronization signal generation circuit 44, and the decoder 43. The servo circuit 39 rotates the spindle motor 38 at a predetermined number of revolutions based on the transmitted error signal and clock, controls the objective lens in the optical head 36, and performs tracking servo and focus servo. The decoder 43 demodulates a signal modulated at the time of recording in synchronization with the transmitted clock, and outputs a demodulated reproduced signal as reproduced data. The first synchronizing signal generation circuit 44 generates a synchronizing signal for irradiating a pulsed laser beam based on the transmitted clock, and sends the synchronizing signal to the laser driving circuit 35. The laser drive circuit 35
Is based on the transmitted synchronization signal.
Is controlled to pulse the reproduction laser beam. When the super-resolution magneto-optical recording medium 3514 is reproduced by a continuous light laser beam, no synchronization signal is sent from the first synchronization signal generation circuit 45 to the laser drive circuit 35 and the laser drive The circuit 35 turns on the semiconductor laser in the optical head 36 continuously.

The super-resolution magneto-optical recording medium 3514
When reproducing a laser beam by pulsing the laser beam, the clock generating circuit 42 generates a clock according to the method shown in FIGS. 28, 29 and 30 in the fifth embodiment.
The same three methods as described above are applicable. In the production of the magneto-optical recording medium described in the fifth and sixth embodiments, the reproducing layer 224 is formed after the dielectric layer 225 made of SiN is formed on the substrate 226. Before forming the reproducing layer 224, the dielectric layer 22
After the surface of the recording layer 5 is etched and planarized,
To form The etching conditions were a magnetron sputtering method using Ar gas and a power of 0.05 to 0.2.
A range of 0 W / cm ² and a time of 15 to 30 minutes is suitable. As a result, a magnetic film having large anisotropy can be formed, and the reproduction characteristics of the magneto-optical recording medium can be improved. The magnetic films disclosed in the fifth and sixth embodiments are particularly suitable for an amorphous structure.

Next, an embodiment of the vehicle information recording apparatus of the present invention using the recording medium described above will be described. In FIG. 39, reference numeral 501 denotes a GPS antenna that detects the position of a GPS satellite to detect the position of the vehicle, 502 denotes a self-sustained running position detecting unit that detects the rotation speed of the wheel shaft and the running position of the vehicle using a gyro sensor, and 503 denotes navigation. 504 is a recording memory card slot for reading information from the recording memory card 503 or recording information on the recording memory card 503, 505 is a GPS antenna 501 and a self-sustaining driving. The vehicle position is detected based on the information of the position detection unit 502, and map information around the vehicle position is recorded from the recording memory card 503 into the recording memory card slot 50.
4 from the recording memory card 503 through the LC
D is a central control unit that superimposes and displays map information and an icon indicating a vehicle position on a display unit 506 including D and the like.
As the recording memory card 503, a card made of the above-described magneto-optical recording medium is used. In the present embodiment, the recording memory is of the card type, but may be of the disk type or the tape type, and the recording / reproducing mechanism may be compatible with it.

The self-sustained traveling position detecting section 502 detects the traveling position of the vehicle, such as the number of revolutions of the engine, traveling distance and traveling speed information, in addition to detecting the traveling position of the vehicle. A configuration for notifying 505 can also be taken. In this case, it is not necessary to separately provide a detection unit for information when the vehicle is traveling.

Credit information for paying a gas station fee is also recorded in the recording memory card 503. When refueling (charging in the case of an electric vehicle) at the gas station, payment is made with the recording memory card 503. I do. At that time, at the gas station, the refueling date and time information, the refueling amount information, the gasoline consumption information since the previous refueling, the payment amount information, and the refueling gas station position information are recorded in the user recording area of the memory card 503. To record. Furthermore, local information such as sightseeing spots, restaurants, and events around the refueled gas station is also recorded in the user recording area of the recording memory card 503. Further, normal driving information such as fuel efficiency information, speed information, rotation speed information, and the like when the vehicle is normal is assumed to be recorded by the user in advance on the recording memory card 503.

When the recording memory card 503 on which the regional information is recorded at the gas station is set in the recording memory card slot 504, the central control unit 505 causes the recording memory card 50 via the recording memory card slot 504.
The area information recorded in the user recording area No. 3 is read and displayed on the display unit 506. The user can control the central control unit 5
The user can select desired area information by using an operation input unit (keyboard, joystick, or the like) (not shown) provided in the unit 05. If the user selects the desired area information, for example, if the user selects a desired tourist spot among the tourist spots, the display section 506 displays the selected tourist spot at the position where the desired tourist spot is located. The icon shown is displayed on the navigation map data, the optimum route from the current position of the vehicle to the position of the desired tourist attraction is automatically selected, and the user selects the optimum route on the navigation map data of the display unit 506. The route is displayed in a color different from the normal color so that it can be recognized. When selecting an optimum route, the route may be selected based on VICS (road traffic information communication system) information.

The fuel consumption is calculated from the gasoline consumption information recorded at the gas station at the recording memory card 503 since the last refueling and the travel distance information, and the fuel consumption information is displayed on the display unit 506. At the same time, the calculated fuel efficiency information is also recorded on the recording memory card 503. In this embodiment, the case where gasoline is supplied is described. However, the same applies to the case where charging is performed in an electric vehicle. The content recorded in the recording memory card 503 at the gas station is based on the charging date and time. Information (in the case of gasoline refueling, refueling date and time information), charging and stored energy information (in the case of gasoline refueling, refueling amount information),
The energy consumption information (consumption information in the case of gasoline refueling) of the energy from the previous charging, the payment amount information, and the charged gas station position information are recorded in the user recording area of the recording memory card 503. .

Further, by connecting the central control unit 505 to a vehicle control unit (not shown) for controlling the vehicle body (indicated by a dotted line in FIG. 39), the central control unit 505 outputs a signal from the vehicle control unit. (For example, rotation speed information, speed information, traveling distance information, etc.) are sequentially sampled (for example, at one second intervals), and the recording memory card slot 504 is sampled.
Through the recording memory card 503.

The central control unit 505 compares the information at the time of traveling of the vehicle with the information at the time of normal operation of the vehicle previously recorded on the recording memory card 503 by the user, and predicts the performance degradation of the vehicle. This prediction processing is performed by using artificial intelligence (AI) in the central control unit 505, and displays performance deterioration prediction information of the vehicle (for example, a message such as “A part may have a failure”). 506 (see FIG. 40). At the same time, the vehicle performance inferior prediction information is also recorded in the recording memory card 503. In addition, it is possible to predict poor vehicle performance by comparing the fuel efficiency information and the travel distance information with the information on the normal state of the vehicle previously recorded in the recording memory card 503 by the user.

The central control unit 505 records fee information based on the vehicle travel distance and the vehicle travel time, and based on the departure position and the arrival position of the vehicle travel, calculates the fee for the vehicle travel section. Can be calculated. The departure position and arrival position of the vehicle traveling can be determined by an operation input unit (keyboard, joystick, etc.) (not shown) provided in the central control unit 505. Further, the fee information and the vehicle traveling section information are displayed on the display unit 506. At the same time, the charge information and the vehicle traveling section information are output to paper by the print output unit 507. Further, the charge information and the vehicle traveling section information are recorded on the recording memory card 503 via the recording memory card slot 504.

If this configuration is used for a taxi, the departure position of the vehicle is set when a taxi user gets on the vehicle,
When you arrive at the destination, you can calculate the fare by setting the arrival position, issue a receipt showing the use section and the fare, and record the fare information and vehicle travel section information on a memory card. Since it is recorded in 503, it can also be used for taxi operation records.

[0058]

According to the present invention, the energy consumption rate is automatically calculated, and can be easily notified by visually displaying it to the user. Also, the energy consumption rate is recorded. Furthermore, performance degradation of the vehicle can be predicted, and effective information can be provided as vehicle maintenance information. Further, since the prediction of the performance deterioration of the vehicle is also recorded, it can be used as maintenance information.

Further, since information on the surrounding area is provided from the gas station, detailed information on the surrounding area can be obtained, and by superimposing the information on the navigation map, the user can easily recognize the information. It can also be used for taxi fare systems.

[Brief description of the drawings]

FIG. 1 is a diagram showing a card having a high-density recording area.

FIG. 2 is a diagram showing an apparatus for recording or reproducing a signal in a recording area provided on a card.

FIG. 3 is a diagram illustrating a mechanism for recording or reproducing a signal in a recording area provided on a card.

FIG. 4 is a diagram showing another mechanism for recording or reproducing a signal in a recording area provided on a card.

FIG. 5 is a diagram illustrating an optical system that records or reproduces a signal in a recording area according to the first embodiment.

FIG. 6 is a diagram showing a card having another type of recording area and an apparatus for recording or reproducing signals on the card.

FIG. 7 is a diagram showing an apparatus for recording or reproducing a signal in a recording area provided on a tape.

FIG. 8 is a diagram showing another apparatus for recording or reproducing a signal in a recording area provided on a tape.

FIG. 9 is a diagram showing an apparatus for recording or reproducing signals on a circular disk.

FIG. 10 is a diagram showing another apparatus for recording or reproducing a signal on or from a circular disk.

FIG. 11 is a diagram showing an apparatus for recording or reproducing a signal on a card having a circular recording area.

FIG. 12 is a diagram showing an apparatus for recording or reproducing a signal on a card having a circular recording area.

FIG. 13 is a diagram showing an apparatus for recording or reproducing a signal on or from a circular disc inserted into a card.

FIG. 14 is a diagram showing an apparatus for recording or reproducing a signal in a recording area provided on the card with the card interposed therebetween.

FIG. 15 is a diagram illustrating an apparatus that records or reproduces a signal in a recording area provided on the card with the card interposed therebetween.

FIG. 16 is a diagram illustrating an apparatus that records or reproduces a signal in a recording area provided on the card with the card interposed therebetween.

FIG. 17 is a diagram showing an apparatus for recording or reproducing a signal in a recording area provided on a card from one side.

FIG. 18 is a diagram showing a temperature distribution in a laser beam.

FIG. 19 is a diagram showing transfer of magnetization from a recording layer to a reproducing layer in a super-resolution magneto-optical recording medium according to a CAD system of a fifth embodiment.

FIG. 20 is a diagram illustrating an applied magnetic field for expanding a magnetic domain according to a fifth embodiment.

FIG. 21 shows data for determining the magnitude of an external magnetic field required for magnetic domain expansion according to the fifth embodiment.

FIG. 22 is a diagram illustrating a structure of a magneto-optical recording medium according to a fifth embodiment.

FIG. 23 is a diagram illustrating a minimum magnetic domain diameter according to the fifth embodiment.

FIG. 24 is a diagram illustrating the disappearance of a magnetic domain according to the fifth embodiment.

FIG. 25 is a diagram illustrating transfer of magnetization from a recording layer to a reproducing layer in a super-resolution magneto-optical recording medium according to a fifth embodiment of the RAD method.

FIG. 26 is a diagram illustrating transfer of magnetization from a recording layer to a reproducing layer in a super-resolution magneto-optical recording medium according to a fifth embodiment FAD method.

FIG. 27 is a block diagram of a playback device according to a fifth embodiment.

FIG. 28 is a diagram illustrating self-synchronization according to the fifth embodiment.

FIG. 29 is a diagram illustrating external synchronization according to the fifth embodiment.

FIG. 30 is a diagram illustrating two-period sampling according to the fifth embodiment.

FIG. 31 is a diagram illustrating a pulse magnetic field applied in a magnetic domain expansion process according to a fifth embodiment.

FIG. 32 is a diagram illustrating timings of application of a pulsed laser beam and a pulsed external magnetic field according to the fifth embodiment.

FIG. 33 shows data demonstrating magnetic domain expansion in the magneto-optical recording medium of the fifth embodiment.

FIG. 34 is a diagram showing a structure of a magneto-optical recording medium according to a sixth embodiment.

FIG. 35 is a diagram illustrating transfer of magnetization from a recording layer to a reproduction layer in a super-resolution magneto-optical recording medium according to a CAD system according to a sixth embodiment.

FIG. 36 is a diagram illustrating a block diagram of a playback device according to a sixth embodiment.

FIG. 37 is another example of the super-resolution magneto-optical recording medium of the fifth embodiment.

FIG. 38 is another example of the super-resolution magneto-optical recording medium according to the CAD system of the sixth embodiment.

FIG. 39 is a functional block diagram of the vehicle information recording device of the present invention.

FIG. 40 is a diagram showing an embodiment of a vehicle driving information display.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Card 2 ... Recording area 2a, 2b, 2c ... Block 3a, 3b ... Stepping motor 4a, 4b ... Rail 5 ... Arrow 6 ... Optical head 7 ... Magnetic head 31 Objective lens 32 Galvano mirror 41 Polygon mirror 74 Tape 90 Coil 91 Magnet 100 Roller 102 Spring support 103 .. Belt 221 Protective layer 222 Recording layer 223 Non-magnetic layer 224 Reproducing layer 225 Dielectric layer 226 Substrate 227, 228 Magnetic domain 229 Hysteresis curve 1910 magneto-optical recording medium 501 GPS 503 recording memory card 504 recording memory card slot 505 central control unit 506 Radical 113 507 ... print output section

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Shinsuke Moriai 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Seiji Kajiyama 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (23)

[Claims] 1. A means for detecting a vehicle mileage, a means for recording a stored energy amount, a means for recording an energy consumption amount, and calculating an energy consumption rate based on the vehicle mileage and the energy consumption amount. A vehicle information recording device, comprising: 2. A vehicle according to claim 1, further comprising means for recording vehicle travel distance information detected by said vehicle travel distance detection means and consumption rate information derived by said energy consumption rate calculation means. Vehicle information recording device. 3. A means for recording running information in a normal state of a vehicle, a running information in the normal state, and a vehicle running distance detected by the vehicle running distance detecting means. A vehicle for comparing information and consumption rate information derived by the energy consumption rate calculation means; and a means for detecting a current state of the vehicle and predicting performance degradation based on the comparison means. Information recording device. 4. The vehicle information recording apparatus according to claim 3, further comprising means for displaying information, wherein the performance deterioration prediction information predicted by the performance deterioration prediction means is displayed on the display means. . 5. The vehicle information recording apparatus according to claim 3, further comprising means for recording performance deterioration prediction information predicted based on the performance deterioration prediction means. 6. The vehicle information recording apparatus according to claim 2, wherein the recording unit records on a high-density information recording medium. 7. The vehicle information recording device according to claim 6, wherein the high-density information recording medium is a card. 8. The vehicle information recording device according to claim 6, wherein the high-density information recording medium is a magneto-optical disk. 9. The vehicle information recording device according to claim 6, wherein the high-density information recording medium is a magneto-optical tape. 10. A vehicle information recording apparatus comprising: means for recording tourist attraction information; and display means for displaying the tourist attraction information. 11. The vehicle information recording apparatus according to claim 10, further comprising a car navigation system, wherein the tourist attraction information is displayed on a car navigation map. 12. The vehicle navigation system according to claim 11, further comprising means for selecting desired tourist attraction information from the tourist attraction information, and displaying a tourist attraction position on the car navigation map based on the selected tourist attraction information. A vehicle information recording apparatus for displaying, on a car navigation map, a route from a current vehicle position to the selected tourist attraction position. 13. The vehicle information recording according to claim 12, wherein a route from the current vehicle position to the selected tourist attraction position is displayed on the car navigation map based on VICS information. apparatus. 14. The vehicle information recording apparatus according to claim 10, wherein the means for recording the tourist attraction information records on a high-density information recording medium. 15. The vehicle information recording device according to claim 14, wherein the high-density information recording medium is a card. 16. The vehicle information recording device according to claim 14, wherein the high-density information recording medium is a magneto-optical disk. 17. The vehicle information recording device according to claim 14, wherein the high-density information recording medium is a magneto-optical tape. 18. A means for determining a departure position and an arrival position of a desired vehicle traveling section; a means for calculating a fee based on a vehicle traveling distance and a vehicle traveling time in the vehicle traveling section; Departure location information and arrival location information,
Means for recording the charge information calculated by the charge calculation means. 19. The vehicle information recording apparatus according to claim 18, wherein said recording means records on a high-density information recording medium. 20. The vehicle information recording device according to claim 19, wherein the high-density information recording medium is a card. 21. The vehicle information recording device according to claim 19, wherein the high-density information recording medium is a magneto-optical disk. 22. The vehicle information recording device according to claim 19, wherein the high-density information recording medium is a magneto-optical tape. 23. The vehicle information recording device according to claim 18, wherein the recording unit records on a paper.