JPH0869248A - Disk recording/reproducing device for traveling object - Google Patents

Abstract

PURPOSE: To accelerate the scroll of a map display in a traveling object navigation device. CONSTITUTION: When the map display of the same position is scrolled plural times, and a traveling route is confirmed, a map address is stored in a map address storage area of a memory in an MD driver 9 like the order specified by map display means 5, 6, 8 according to the scroll operation of the map display when a first time traveling route is confirmed, and the map information is read out of a recording medium 9a in the order stored in a map address storage area when the traveling route after a second time is confirmed, and the same scroll operation as the time when the first time traveling route is confirmed is performed. Moreover, the operation which reading out the map information from the recording medium 9a and temporarily storing it in the storage area is performed preceding the specification of the map address by the map display means 5, 6, 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus for recording / reproducing various information signals necessary for navigation of a mobile body on a recording medium such as a disc.

[0002]

2. Description of the Related Art In recent years, in a typical automobile as a moving body, a device for providing vehicle information, a navigation function, a location function and the like by a display such as a liquid crystal display device has become popular. The navigation function is a function of instructing the destination on the map displayed on the screen of the display device in the direction in which the currently running vehicle should travel, and the location function is currently running. This is a function that indicates which position on the map displayed on the screen the automobile is traveling.

Conventionally, as an apparatus for executing such a function, there is one based on a read-only memory called a CD-ROM. FIG. 11 is a block diagram of a conventional mobile navigation device. In the figure, reference numeral 1 is a CD driver, which is an apparatus for reproducing a CD-ROM 1a in which map information is recorded. 2 receives a radio wave from an artificial satellite via an antenna, and can confirm or determine the current position and moving speed of a car, and a GPS (Global position)
Ning system) device. Further, 3 is an azimuth sensor, which decomposes and detects geomagnetism into a traveling direction component of the vehicle and its vertical component by a geomagnetism detector fixed to the vehicle, and outputs a signal corresponding to this as the traveling direction θ of the vehicle. To do. A distance sensor 4 outputs a pulse signal proportional to the rotation speed of the wheel by using a vehicle speed sensor that detects the rotation of the wheel with an electromagnetic pickup, a reed switch, or the like.

Reference numeral 5 denotes a control unit, which is composed of a CPU, a CRT controller and the like, and outputs a control signal for reading the map information reproduced by the CD driver 1 and displaying it on the screen. Further, the pulse signal from the distance sensor 4, the GPS signal from the GPS device 2, and the azimuth sensor 3
From the X and Y component digital signals to perform arithmetic processing to obtain a traveling locus and a current position, which are traveling route information,
The display signal is being output.

Reference numeral 6 denotes a display device for displaying, which operates in response to a control signal or a display signal from the control section 5. A key switch group 7 outputs a selection signal for selecting various operation modes to the control unit 5. 8
Is a RAM for temporary storage, which stores map data read from the CD driver 1 in the process of the control unit 5 performing arithmetic processing. The RAM 8 has a memory table for storing the present position, and the position coordinates (X
The map data corresponding to (0, Y0) is read out and displayed so that the current position is at the center of the screen. It also has a memory table for storing position data in order to display the traveling locus on the screen.

Next, the operation of the apparatus configured as described above will be described. When the navigation mode is selected by the key switch group 7 at the start of driving the vehicle,
When the CD-ROM 1a is reproduced by the CD driver 1 and the map information having the starting point position (X0, Y0) is read,
This is displayed on the display device 6. When the automobile starts traveling, a pulse signal is output from the distance sensor 4 and given to the control unit 5. The control unit 5 multiplies the number of pulses by a predetermined numerical value to obtain the traveling distance D at regular time intervals.

Next, the position on the two-dimensional coordinates of the vehicle is calculated from the traveling azimuth θ from the azimuth sensor 3 and the traveling distance D by the following equation. ΔX0 = D · cos θ ΔY0 = D · sin θ Next, the present position (X1, Y1) is obtained from the calculated coordinates (ΔX0, ΔY0) and the starting point coordinates (X0, Y0) by the following equation. X1 = X0 + ΔX0 Y1 = Y0 + ΔY0 Generally, for the current position (Xn + 1, Yn + 1), Xn + 1 = Xn + ΔXn Yn + 1 = Yn + ΔYn. In this way, the traveling distance to the current position, which changes moment by moment, and the latitude and longitude for each fixed time are determined.

Since an error occurs only with the data from the distance sensor 4 and the direction sensor 3, the G from the GPS device 2
Upon receiving the PS signal, a calculation for GPS processing is executed,
Since the absolute value of the latitude and longitude is determined at regular intervals, the travel route information is corrected. The traveling distance and traveling route information are sequentially stored in the RAM 8 for temporary storage. Further, the traveling locus of the automobile is sequentially displayed on the display device 6 according to the traveling route information stored in the RAM 8. Further, even when the map displayed while the vehicle is traveling is sequentially switched to the adjacent map, the driving route information is automatically displayed on the adjacent map, so that the driver can accurately see the driving route of the vehicle. be able to.

[0009]

As described above, the conventional mobile navigation device automatically displays the relationship between the current position of the host vehicle and the map and the traveling locus, so that the user tries to reach the destination. It was a convenient device to some extent for the driver. However, when the traveling route to the destination is confirmed by scrolling the map display, there is a problem that a part of the display is lost if it is too fast. This is because during the map scroll, the controller 5 calculates the adjacent map address to be displayed next, and then the CD-
This is because the corresponding map is read from the ROM 1a, and if the scrolling is too fast, the reading operation cannot be performed in time. Therefore, it was necessary to read the map by some method prior to the scroll operation.

Further, when the traveling route is confirmed by scrolling the map display at the same place a plurality of times, the scroll key of the key switch group 7 must be operated every time the traveling route is confirmed, and the scroll operation is learned. I couldn't.

An object of the present invention is to solve the above problems of the conventional apparatus. When the traveling route is confirmed by scrolling the map display at the same location a plurality of times,
The scrolling operation is performed by storing the order of the map addresses used for the map display at the time of confirming the traveling route for the second time and referring to the stored order of the map addresses at the time of confirming the traveling route for the second time and thereafter. It is an object of the present invention to provide a device capable of speeding up the operation, and storing the display coordinates when the map is displayed for the first time and automating the scroll operation itself after the second time.

[0012]

According to a first aspect of the present invention, there is provided a disk reproducing apparatus for a mobile body, which stores reproducing means for reproducing predetermined map information from a recording medium and map information reproduced by the reproducing means. Storage means, map display means for designating a map address and displaying the map information read from the storage means, and storing map addresses in the order designated by the map display means in response to a scrolling operation of the map display. And a map address storage means.

According to a second aspect of the present invention, there is provided a disk reproducing apparatus for a mobile body, a reproducing means for reproducing predetermined map information and its adjacent map information from a recording medium, a map information reproduced by the reproducing means, and the map information reproduced by the reproducing means. Depending on the storage means for storing the adjacent map information, the map display means for displaying the map information selected or read out by the storage means by designating the map address or the adjacent map information, and the scroll operation of the map display. The map display means is provided with map address storage means for storing the map addresses in the order designated by the map display means.

According to a third aspect of the present invention, there is provided a disk recording / reproducing apparatus for a moving body, a reproducing means for reproducing predetermined map information from a recording medium, and a storing means for storing the map information reproduced by the reproducing means. A map display means for designating a map address and displaying the map information read from the storage means, and a recording means for recording the map address in the order designated by the map display means in response to a scroll operation of the map display are provided. It is a thing.

According to a fourth aspect of the present invention, there is provided a disk recording / reproducing apparatus for a mobile body, a reproducing means for reproducing predetermined map information from a recording medium, and a storing means for storing the map information reproduced by the reproducing means. A map display means for designating a map address and displaying the map information read from the storage means, and a map address to which a route identification address is added in the order designated by the map display means in accordance with the scroll operation of the map display are recorded. And recording means for performing the same.

According to a fifth aspect of the present invention, there is provided a disk reproducing apparatus for a moving body, a reproducing means for reproducing predetermined map information from a recording medium, a storing means for storing the map information reproduced by the reproducing means, and a map. Map display means for designating an address and displaying the map information read from the storage means; and map address storage means for storing the map addresses in the order designated by the map display means in accordance with the scroll operation of the map display, The display coordinate storage means stores the display coordinates in the order in which the display coordinates move in accordance with the scroll operation of the map display.

According to a sixth aspect of the present invention, there is provided a disk recording / reproducing apparatus for a moving body, a reproducing means for reproducing predetermined map information from a recording medium, and a storing means for storing the map information reproduced by the reproducing means. A map display means for designating a map address and displaying the map information read from the storage means, and a first area of the recording medium for storing the map addresses in the order designated by the map display means in response to a scroll operation of the map display. And recording means for recording the display coordinates in the second area of the recording medium in the order in which the display coordinates move in accordance with the scroll operation of the map display.

According to a seventh aspect of the present invention, there is provided a disk recording / reproducing apparatus for a mobile body, which comprises reproducing means for reproducing predetermined map information from a reproduction-only recording medium and a rewritable recording medium.
A storage means for storing the map information reproduced by the reproducing means, a map display means for displaying the map information read out from the storage means by designating a map address, and the map display means according to the scroll operation of the map display. The map addresses are recorded in the first area of the recordable and reproducible recording medium in the order designated by the, and the display coordinates can be rerecorded and rerecorded in the order in which the display coordinates are moved according to the scroll operation of the map display. Recording for recording in the second area of the recording medium, and recording the map information in the third area of the rewritable recording medium in the order read from the read-only recording medium according to the map address. And means.

[0019]

According to a first aspect of the present invention, there is provided a disk reproducing apparatus for a moving body, wherein the reproducing means reproduces the map information from the recording medium, the map information is stored in the storing means, and then displayed by the map displaying means. When the travel route confirmation is performed by scrolling the map display at the same place a plurality of times, the map is stored by the map address storage means in the order designated by the map display means in accordance with the scroll operation of the map display at the time of the first travel route confirmation. The addresses are stored, and when the traveling route is confirmed for the second time and thereafter, the reproduction means causes the recording medium to be stored in the order of the map addresses stored in the map address storage means prior to the map address designation by the map display means. The map information is reproduced and stored in the storage means.

According to the second aspect of the present invention, there is provided the disk reproducing apparatus for a mobile body, wherein the reproducing means reproduces the map information and the adjacent map information from the recording medium, and the map information is stored in the storing means. When the device is displayed by the map display means after being selected by, and the traveling route is confirmed by scrolling the map display of the same place a plurality of times, the scroll operation of the map display at the time of the first traveling route confirmation. The map addresses are stored by the map address storage means in the order designated by the map display means according to the above, and when the traveling route is confirmed for the second time and thereafter, the map address storage means is preceded by the map address designation by the map display means. The map information and its adjacent map information are reproduced from the recording medium by the reproducing means in the order of the map addresses stored in It is stored in the memory means.

According to a third aspect of the present invention, there is provided a disk recording / reproducing device for a moving body, which is a device in which map information is reproduced from the recording medium by the reproducing means, stored in the storing means, and then displayed by the map displaying means. , To check the driving route by scrolling the map display of the same place multiple times,
The map addresses are recorded in the recording medium by the recording means in the order designated by the map display means in accordance with the scrolling operation of the map display at the time of the first traveling route confirmation, and the map display is made at the second and subsequent traveling route confirmations. The map information is reproduced from another area of the recording medium by the reproducing means in the order of the map addresses recorded on the recording medium prior to the designation of the map address by the means, and stored in the storage means.

According to a fourth aspect of the present invention, there is provided a disk recording / reproducing device for a moving body, which is a device in which map information is reproduced from the recording medium by the reproducing means, stored in the storing means, and then displayed by the map displaying means. Then, when the operation of confirming the traveling route by scrolling the map display of the same place a plurality of times is performed for a plurality of different traveling routes, the scroll operation of the map display is performed at the first traveling route confirmation for each traveling route. The map addresses to which the route identification addresses are added are recorded in the recording medium by the recording means in the order designated by the map display means in accordance with the above. When confirming the traveling route for each traveling route after the second time,
Prior to the map address designation of the map display means, the map information is reproduced from another area of the recording medium by the reproducing means in the order of the map addresses recorded in the recording medium and stored in the storage means. It

According to a fifth aspect of the present invention, there is provided a disk reproducing device for a moving body, which is a device in which the map information is reproduced from the recording medium by the reproducing means, stored in the storing means and then displayed by the map displaying means. When the travel route confirmation is performed by scrolling the map display at the same place a plurality of times, the map is stored by the map address storage means in the order designated by the map display means in accordance with the scroll operation of the map display at the time of the first travel route confirmation. The addresses are stored, and the display coordinate storage means stores the display coordinates of the map in the order of movement. Then, at the time of confirming the traveling route for the second time and thereafter, the display coordinates of the map are automatically read out in order from the display coordinate storage means by the map display means, and the display areas are respectively calculated. Prior to the map address designation by the map display means, the map addresses stored in the map address storage means are reproduced in order from the recording medium by the reproduction means and stored in the storage means.

According to a sixth aspect of the present invention, there is provided a disk recording / reproducing device for a moving body, which is a device in which map information is reproduced from a recording medium by the reproducing means, stored in the storing means, and then displayed by the map displaying means. , To check the driving route by scrolling the map display of the same place multiple times,
The map address is recorded in the first area of the recording medium by the recording means in the order designated by the map display means in accordance with the scroll operation of the map display at the time of the first traveling route confirmation, and the map coordinates are stored by the display coordinate storage means. The display coordinates are recorded in the second area of the recording medium in the order of movement. Then, at the time of confirming the traveling route after the second time, the display area of the display coordinates of the map reproduced by the reproducing means is calculated by the map displaying means, and the necessary map information precedes the map address designation of the map displaying means. The map addresses are reproduced in the order of the map addresses reproduced by the reproducing means from the third area of the recording medium by the reproducing means and stored in the storage means.

According to a seventh aspect of the present invention, there is provided a disk recording / reproducing apparatus for a mobile body, wherein the reproducing means reproduces the map information from the recordable and recordable recording medium, and the map information is stored in the storing means, and then the map displaying means. In the device displayed by the above, when the traveling route confirmation is performed by scrolling the map display of the same place a plurality of times, the order designated by the map display means according to the scroll operation of the map display at the time of the first traveling route confirmation. As described above, the map address is recorded in the first area of the rewritable recording medium by the recording means, and the second area of the upper rewritable recording medium is arranged in the order in which the display coordinates of the map are moved by the display coordinate storage means. And the above-mentioned map information is recorded in the third area of the rewritable recording medium in the order of being read out from the read-only recording medium according to the above-mentioned map address. It is. Then, at the time of confirming the traveling route for the second time and thereafter, the map address of the first area of the upper rewritable recording medium and the display coordinates of the map of the second area of the upper rewritable recording medium by the reproducing means. Is played. Moreover, the display coordinates of the reproduced map are calculated in the display area by the map display means, and necessary map information is displayed in the order of the reproduced map addresses prior to the map address designation of the map display means. The data is reproduced from the third area of the recording medium on which the recording and re-recording is possible by the reproducing means, and is stored in the storage means.

[0026]

【Example】

Example 1. In the following embodiments, a case where an MD (Mini Disc) is used as a recording medium for easy understanding will be described as an example, but the present invention is not limited to this. FIG. 1 is a block circuit diagram of a first embodiment according to the inventions of claims 1 and 2. As is well known, the MD is an optical disc having a diameter of 64 mmφ and housed in a cartridge for easy handling. Despite its small storage capacity, it has a storage capacity of 120 Mbytes or more, and is a medium capable of recording a large amount of various digital data. Conventional CD for MD-
Similar to the ROM 1a, there are a read-only type and an erasable type capable of recording and reproducing many times by a magneto-optical recording system. In the present invention, the latter erasable type is used.

In FIG. 1, reference numerals 1 and 1a to 8 are the same as those in the conventional system shown in FIG. 11, and their respective functions and operations are almost the same as described above, and detailed description thereof will be omitted. Reference numeral 9 is an MD driver for recording and reproducing MD, and 9a
Is an erasable MD which is a recording medium. here,
Since it is possible to rewrite the read-only CD-ROM 1a, the erasable MD9a will be replaced with the MD-RAM.
9a.

FIG. 2 is a block diagram showing the inside of the MD driver 9. An optical pickup 10 reads a signal from the MD-RAM 9a, and its output is connected to the reproduction amplifier 11. Reference numeral 12 is a reproduction signal processing circuit that demodulates a reproduction signal obtained from the reproduction amplifier 11 (described later) and performs error correction. The reproduction data processed here is temporarily stored in the memory 14 via the memory control circuit 13. To be done. Reference numeral 15 denotes an I for interfacing the reproduction data read from the memory 14 with the control unit 5 via the memory control circuit 13.
/ F (interface) circuit.

Reference numeral 19 is a spindle motor for rotating the MD-RAM 9a, and this and the optical pickup 10 are controlled by a servo control circuit 20. Further, reference numeral 21 denotes a microcomputer (hereinafter referred to as “microcomputer”) which controls each part of the MD driver according to an instruction from the controller 5 such as recording and reproducing to perform a recording and reproducing operation. Here, in this embodiment, the MD-RAM 9a has C
In addition to the map information similar to that of the D-ROM 1a, the traveling route information described in the conventional example is recorded and reproduced. The recording format is almost the same as the CD-ROM 1a,
It does not necessarily have to be the same.

Next, the operation will be described. The display processing of the map information and the traveling locus, and the processing of the data obtained from the GPS device 2, the direction sensor 3 and the distance sensor 4 are the same as those in the conventional method. First, when the map information is read from the MD-RAM 9a and is displayed on the display device 6 so that the current position (Xn, Yn) is located at the center as in the conventional example, the process is as follows.

First, in order to display the map, the control unit 5 gives a read command of map information and a map address to the microcomputer 21. At the same time, the control unit 5 controls the current position (Xn,
Yn) is stored in the memory table for the traveling locus in the RAM 8. Next, the microcomputer 21 operates the servo control circuit 20 and causes the spindle motor 19 to drive the MD-RAM 9
While rotating a, the optical pickup 10 is moved to perform reproduction, and a portion where the map information of the designated address is recorded is searched. Based on the reproduction signal from the optical pickup 10, the microcomputer 21 confirms that the specified address is the additional information called the sub code, or M
When it is obtained as address information (ADIP) wobbled in the D-RAM 9a, the reproduction data processing of the MD driver 9 is started from that location.

Here, the reproduction signal from the optical pickup 10 is given to the reproduction signal processing circuit 12 through the reproduction amplifier 11 and subjected to EFM demodulation and error correction processing for converting 14-bit data into 8-bit data. The processed reproduction data is input to the memory control circuit 13, and when a synchronization signal is detected, the reproduction data is sequentially stored in the memory 14 with reference to a sector which is a data unit to which this signal is added. Address information is added to the sector and corresponds to the address information of the map. The address information of this sector also corresponds to the subcode or ADIP address.
The DIP address is output from the reproduction signal processing circuit 12,
The sector address is output from the memory control circuit 13 and both are given to the microcomputer 21.

Next, the memory control circuit 13 uses the microcomputer 21.
In accordance with the instruction, the map data corresponding to the address designated by the control section 5 is selected from the reproduction data stored in the memory 14 and read. This map data is I
After being buffered by the / F circuit 16 and converted into the input format of the control unit 5 (for example, refer to the standard established by the Navigation Study Group and the CD-ROM standard), the control unit 5 performs display processing. However, CD-R
When the MD-RAM 9a has the same input format as that of the control unit 5 like the OM 1a, the above conversion process is unnecessary. Hereinafter, even when the current position moves to (Xn + 1, Yn + 1), the reading operation from the MD-RAM 9a is the same, and the position (Xn + 1, Yn + 1) is the memory for the traveling locus of the RAM 8. Stored in the table. In the read operation, when the scroll operation for moving the map display is performed according to the scroll key operation in the key switch group 7, the control unit 5 sets the adjacent map to the MD-RAM 9a.
The same applies when reading more.

Next, FIG. 3 shows the contents of the memory 14. Reference numeral 22 is a map address storage area for storing the map address used when the memory control circuit 13 selects desired map data from the reproduction data. The map address storage area 22 is an area provided independently of the reproduction data storage area 23 and the recorded data storage area 24, and stores the map address sent from the control unit 5 when the map display is scrolled. It is stored corresponding to the order. In the above operation, when the map data corresponding to the address designated by the control unit 5 is selected from the reproduction data, the address is stored in the map address storage area 22 by the memory control circuit 13.

Therefore, by repeating this operation, all the map addresses issued by the control unit 5 for the adjacent map data request during one scroll operation are stored in the map address storage area 22. Become.
The storage of the map address is executed at the first operation when the traveling route is confirmed a plurality of times while scrolling the map display according to the instruction of the microcomputer 21.

Next, a case where the scroll key of the key switch group 7 is operated again to scroll the map display and the traveling route of the same place is confirmed as when the traveling route is checked for the first time will be described below. . First, the second time, the map display is operated as scrolled when the first traveling route is confirmed. Therefore, the map address and the contents of the map address storage area 22 specified by the control unit 5 are both value and order by the above operation. Will be the same. Using this fact, in the first embodiment, the contents of the map address storage area 22 are referred to, and the MD-RA is sent before the map address is designated from the control unit 5.
By reading the corresponding map data in advance from M9a, the access time as the MD driver 9 is saved, and 2
We are trying to speed up the scroll operation when checking the traveling route after the first time.

FIG. 4 shows a time chart showing the operation at the time of preceding reading. Reference numeral 25 is a read request signal from the control unit 5 to the MD driver 9, which is in an active state when it is at "H" level. Reference numeral 26 is a memory write signal, when reproduction data is written in the memory 14,
It becomes "H" level. Further, 27 is a memory read signal, which becomes “H” level when map data is being read from the memory 14 to the control unit 5 via the I / F circuit 15.

Next, the operation will be described. First, the read request signal 25 becomes "H" level, the map address is designated from the control unit 5 to the microcomputer 21, and the MD-RAM 9
The corresponding part of a is searched. When the microcomputer 21 obtains the specified address from the subcode or the ADIP address as in the above, the reproduction operation is started and the reproduction data is written in the memory 14. At this time, the memory write signal 26 becomes "H" level. The signal processing operation during this period is similar to that described above. After that, when the writing is completed, the memory write signal 26 becomes "L" level.

Next, when the memory control circuit 13 reads the map data from the memory 14, the memory read signal 27 becomes "H" level. This memory read signal 2
7 indicates that when the final map data is read by the control unit 5,
The read request signal 25 also returns to the "L" level and the "L" level at the same time, and the first access operation of the MD driver 9 is completed.

Next, when the map display is being scrolled by the scroll key operation, the map address to be requested next is stored in the map address storage area 22 by the operation of the first scroll. Therefore, the microcomputer 21 sends a map address read command to the memory control circuit 13. Then, the memory control circuit 1
3 reads the map address to the microcomputer 21. After that, the microcomputer 21 receives the MD-
Since the RAM 9a is searched and the reproduction operation is started, the reproduction data of the relevant portion is written in the memory 14 and the preceding read operation is executed. At this time, the memory write signal 26
Is at "H" level, but the read request signal 25 is at "L" level.

Next, when the read request signal 25 becomes "H" level during the second access, the memory control circuit 13
Reads the map data stored by the preceding read from the memory 14, and transfers this to the control unit 5 via the I / F circuit 15. During this period, the memory read signal 27
Is at "H" level. Hereinafter, every time after the third time, the microcomputer 21 executes the preceding read operation before receiving an instruction from the control unit 5.

However, the microcomputer 21 compares the map address from the control unit 5 with the map address from the map address storage area 22 before issuing a map data read command from the memory 14 to the memory control circuit 13, and the map addresses are different. In this case, the issuing of the command is stopped and the MD-RAM 9a is searched based on the former. Then, after the reproduction data is written in the memory 14, the microcomputer 21 issues a read command. Therefore, when the scroll operation is different between the previous scroll and the current scroll, the latter case is prioritized.

Since the first embodiment is configured as described above, when the controller 5 requests the second or subsequent map data read, the search time of the MD-RAM 9a and the subsequent reproduction signal processing time and reproduction data writing are performed. Time and time can be saved, and a quick read request at the time of high speed scrolling can be satisfied. Further, in the above operation, the microcomputer 21 can obtain the map address from the map data storage area 22 and execute the preceding read before the first read request comes from the control unit 5. In this case, as described above, when the map address from the control unit 5 and the map address from the map address storage area 22 are different, the former case is prioritized.

Further, if the adjacent map of the map corresponding to the map address in the map data storage area 22 is also read during the preceding reading, when the above address is different, the MD-RAM 9a is searched again and the reproduction data is written. Then, the map of the corresponding address is selected from the adjacent maps by the memory control circuit 13 and sent to the control unit 5.

Further, in the above embodiment, MD- is used as the recording medium.
Although the RAM 9a is used, the CD-ROM 1a shown in FIG.
The above-mentioned read-ahead can also be realized by using. FIG. 5 is a block circuit diagram of the MD driver 9 when the CD driver 1 is used in the first embodiment according to claims 1 and 2 of the present invention. As shown in FIG. 5, the structure of the CD driver 1 is almost the same as that of FIG. 2, but the reproduction amplifier 11a, the reproduction signal processing circuit 12a, and the memory control circuit 13a are those for the CD-ROM 1a. The I / F circuit 15a is composed of a CD-ROM decoder or the like. Further, the memory 14 is provided with a map data storage area 22a. However, the operation in the above configuration is basically the same as that when the MD-RAM 9a is used, and therefore the description thereof is omitted.

Example 2. FIG. 6 is a block circuit diagram of an MD driver 9 of a second embodiment and a third embodiment according to the invention of claims 3 and 4 which are partially different from the first embodiment, and the same reference numerals as in FIG. And 1
Reference numeral 6 denotes a signal processing circuit, which performs coding and data modulation for error correction when the recording data once stored in the memory 14 is read out via the I / F circuit 15 and the memory control circuit 13. . The recording signal supplied from the recording signal processing circuit 16 is recorded in the MD-RAM 9a by the magnetic head 18 via the recording amplifier 17.

Next, the operation will be described. However, the same parts as those in the first embodiment are omitted. First, in the scroll operation at the time of confirming the first traveling route, the memory control circuit 13 selects and reads the map data from the memory 14,
The map address used for selection after being transferred to the control unit 5 is temporarily stored in the memory 14. This map address is read from the memory 14 by the memory control circuit 13 and input to the recording signal processing circuit 16 as recording data before the next read request comes from the control unit 5 and the reproducing operation starts. Here, processing for error correction encoding and EFM modulation for converting 8-bit data into 14-bit data are performed. The processed recording signal is sent to the MD-RAM by the magnetic head 18 via the recording amplifier 17.
Magneto-optical recording is performed in a predetermined area of 9a.

By repeating the above operation, the value of the map address issued from the control unit 5 and the order thereof are recorded in the MD-RAM 9a in the same order until one scroll operation is completed. Further, unlike the first embodiment, since the data is recorded in the MD-RAM 9a, which has a much larger storage capacity than the memory 14, when scrolling different locations a plurality of times, all the map addresses are recorded for each operation in each time. be able to. That is,
If you check different driving routes multiple times,
Each map address will be recorded. In this case, an address for path identification is added to the recording data by the memory control circuit 13 in accordance with the instruction of the microcomputer 21 for each traveling path during the first scrolling operation.

Next, at the time of confirming the traveling route for the second time and thereafter, before the map reading request comes from the control unit 5, the microcomputer 21 searches the area where the map address of the MD-RAM 9a is stored. To play. The map address once stored in the memory 14 by this reproducing operation is given to the microcomputer 21 by the memory control circuit 13. After that, the microcomputer 21 again searches for and reproduces the corresponding map data area on the MD-RAM 9a using the map address obtained by the reproduction. Then, this reproduced data is stored in the memory 14, and the read-ahead operation is executed. Thereafter, the same operation as that of the first embodiment is performed in response to a read request from the control unit 5.

After confirming different traveling routes a plurality of times, the map address for each route is MD-R.
When recorded in the AM 9a, the above-mentioned route identification address is sent from the control unit 5 to the microcomputer 21 at the time of confirming the second or subsequent traveling route on the same traveling route, and the microcomputer 21 responds to the map address of the corresponding route. Select the area that is stored and search.

Example 3. When the map data storage area 22b shown in FIG. 6 is provided in the memory 14 in the second embodiment, the following operation can be performed. First, at the time of first traveling route confirmation, the map address is recorded in the MD-RAM 9a every time a read request is received from the control unit 5 in the second embodiment, but in the third embodiment, at least one traveling route is recorded. The map address in the scroll operation can be temporarily stored in the map address storage area 22b. This storage operation is the same as in the second embodiment. And the third embodiment
Then, after the scroll operation is completed, the microcomputer 21
Specifies the route identification address and causes the map address storage area 22b to read out the map address via the memory control circuit 13, which is collectively recorded in a predetermined area of the MD-RAM 9a.

Next, at the time of confirming the second and subsequent traveling routes on the same traveling route, in the second embodiment, the map address was reproduced and read from the MD-RAM 9a before the read request was received from the control unit 5. In the third embodiment, the route identification address is designated by the microcomputer 21 before the checking operation is started, and M is collectively set for one traveling route.
The map address is reproduced from the D-RAM 9a. Then, this reproduction data is stored in the map address storage area 22b. After that, the map address storage area 22b is referred to before the read request is received from the control unit 5, and the map address is given to the microcomputer 21 via the memory control circuit 13, so that the preceding read operation is executed in response to this.

Since the third embodiment is configured as described above, it is not necessary to access the map address from the MD-RAM 9a each time the read request from the control unit 5 is frequently received during high-speed scrolling. .

Example 4. FIG. 7 is a block circuit diagram of a fourth embodiment according to the invention of claim 5, and the same reference numerals as those in FIG. 1 denote the same or corresponding portions, and 8a temporarily stores the map data and the like input by the control unit 5. The RAM is divided into a map data storage area and a calculation work area 28, a travel locus memory table 29, and a display coordinate storage area 30. FIG. 8 is an explanatory diagram showing movement of the display area with respect to map data. 31 to 34 are maps A
8A to 8D, they are in the relationship of adjacent maps as shown in FIG. Three
5 to 38 are display areas A to D, and the display coordinates of the center are (X
i, Yi) (i = 1,2,3,4). As shown in FIG. 8, by operating the scroll keys of the key switch group 7,
It is assumed that the display area A35, the display area B36, the display area C37, and the display area D38 are moved in this order.

Next, the operation will be described. However, the description of the same parts as those in the above-described first to third embodiments will be omitted. First, when confirming the first traveling route, the GPS
From the device 2, the orientation sensor 3 and the distance sensor 4 to the control unit 5
When the current position (Xn, Yn) is given to the display coordinates (X
i, Yi) is calculated, and when the display coordinates are (X1, Y1), the area to be displayed is calculated as the display area A35. The map used for display is the map A31. Next, the control unit 5 sends the map address of the map A31 to the MD driver 9, and in response to this, the MD driver 9 sends the MD-RAM 9a.
To search. When the map A31 is reproduced from the MD-RAM 9a, the map address is stored in the map address storage area 22 in the MD driver 9, and the map data is input to the control unit 5. The control unit 5 temporarily uses this map A31 for RA.
Store in M8a.

Next, the control unit 5 controls the map A3 in the RAM 8a.
1 is read out and expanded into display data, and a portion of this display data corresponding to the display area A35 is output to the display device 6 for display. Here, the display data is RA
The display coordinates (X1, Y1) are stored in the display data storage area 30 while being stored in the map data area 28 in M8a. The current position (Xn, Yn) is stored in the traveling locus memory table 29.

Next, when the display coordinates are moved from (X1, Y1) to (X2, Y2) by the scroll key operation, the display area is first changed by the controller 5 according to the coordinates designated by the key operation. The calculated portion is read out and a necessary portion of the display data in the map data storage area 28 is read out and then output to the display device 6. But,
Since the display area B36 is displayed at the display coordinates of (X2, Y2), the map B32 is required before coming here. Therefore, as a result of the calculation of the display area, if there is no corresponding display data in the map data storage area 28, the control unit 5 sets M
The map B32 adjacent to the D driver 9 is requested to be read out and the map address is sent.

MD-RAM 9a by MD driver 9
When the map B32 is read by the
This is temporarily stored in a and expanded into display data. Then, the controller 5 displays the display data of the map A31 in the map data storage area 28 and the expanded map B.
From the display data of 32, predetermined display data is output to the display device 6, and at the display coordinates (X2, Y2),
Display data corresponding to the display area B36 is output. The display data of the map B32 is also stored in the map data storage area 28.
Memorized in. All display coordinates from (X1, Y1) to (X2, Y2) are sequentially stored in the display coordinate storage area 30 in accordance with the coordinates designated by the scroll key. Here, the map address of the map B32 is also stored in the map address storage area 22 in the MD driver 9.

Next, when the display coordinates are moved from (X2, Y2) to (X3, Y3) by the scroll operation,
When there is no display data in the map data storage area 28, the control unit 5 sends a read request for an adjacent map and a corresponding map address to the MD driver 9. Therefore, the display coordinates (X
Since the display area C37 is displayed in (3, Y3), the map C33 and the map D34 are read from the MD driver 9 before coming here. Also at this time, the map C33 and the map D34 are temporarily stored in the RAM 8a, and when they are expanded into display data and the necessary portions are output to the display device 6, these are displayed as display data in the map data storage area 2.
8 is stored. Also, from (X2, Y2) to (X3, Y3
All display coordinates up to () are stored in the display coordinate storage area 30. Further, the map address storage area 22 also stores the map addresses of the map C33 and the map D34.

Next, when the display coordinates are moved from (X3, Y3) to (X4, Y4) by the above scroll operation, the display area D38 of (X4, Y4) straddles the map B32 and the map D34. However, since the display data is already stored in the map data storage area 28, the MD driver 9 is not accessed. The control unit 5 outputs only the display data necessary for display to the display device 6, and (X
All display coordinates from 3, Y3) to (X4, Y4) are stored in the display coordinate storage area 30.

By the above operation, the display coordinate storage area 3
(0, (X1, Y1) → (X2, Y2) → (X3, Y3) →
All the display coordinates up to (X4, Y4) are stored in order, and map A31 in the map address storage area 22 →
Map addresses are stored in the order of map B32 → map C33 and map D34.

Next, since the display coordinates and the map address are respectively stored in the display coordinate storage area 30 and the map address storage area 22 at the time of confirming the traveling route for the second time and thereafter, the control unit 5 first causes the MD driver. 9 is instructed to read the map A31 in advance. The map A31 is read from the MD-RAM 9a based on the contents of the map address storage area 22 and temporarily stored in the MD driver 9. And
When the display area A35 indicated by the display coordinates (X1, Y1) = current position (Xn, Yn) is displayed, the map A31 is read from the MD driver 9 according to the instruction of the control unit 5, and the RAM 8 is displayed.
stored in a. The map A31 of the RAM 8a is expanded into display data, and the portion corresponding to the display area A35 is the control unit 5.
Is sent to the display device 6 and displayed. Further, the display data is stored in the map data storage area 28. When the map A31 is read from the MD driver 9, the control unit 5 instructs the preceding reading again, so that the map address storage area 22 is referred to, and MD-
The next map B32 is read from the RAM 9a and temporarily stored.

Next, unlike the above case, when the scroll is performed, the display coordinates are stored in the display coordinate storage area 30, so that only the display coordinates are read out, and the key operation becomes unnecessary. The control unit 5 repeats the operation of sequentially reading the display coordinates from the display coordinate storage area 30 to calculate the display area, sequentially reading the display data from the map data storage area 28, and sending the display data to the display device 6. However, the display coordinates are (X1,
In the process of (Y1) → (X2, Y2), the display area B36 is displayed at the display coordinates (X2, Y2), and therefore the map B32 is required on the way. Therefore, when there is no data to be displayed in the map data storage area 28, the control unit 5 issues a read request to the MD driver 9. A map B32 is stored in the MD driver 9, which is read out, stored in the RAM 8a, and expanded into display data. After this data is replenished in the map data storage area 28, the parts required for display are sequentially sent to the display device 6. Further, when the map B32 is read from the MD driver 9, the preceding read request from the control unit 5 again refers to the map address storage area 22, and the next map C3 is displayed.
3 and the map D34 are reproduced from the MD-RAM 9a, and M
It is stored in the D driver 9.

Next, the display coordinates are (X2, Y2) → (X3,
In the process of becoming Y3), since the display area C37 is displayed at the display coordinates (X3, Y3), the map C33 and the map D34 are required on the way. Therefore, when there is no more data to be displayed in the map data storage area 28, the control unit 5 issues a read request to the MD driver 9 again. M
Since the map C33 and the map D34 are stored in the D driver 9, this is read out and stored in the RAM 8a,
It is expanded to display data again. After this data is replenished in the map data storage area 28, the parts required for display are sequentially sent to the display device 6.

Next, the display coordinates are (X3, Y3) → (X4,
In the process of becoming Y4), since the display area D38 is displayed at the display coordinates (X4, Y4), the map B3 is displayed.
2 and the map D34 are required, but the display data is already stored in the map data storage area 28. Therefore, the control unit 5 sequentially reads the display coordinates from the display coordinate storage area 30 to calculate the display area, and the map data storage area 28
The display data is sequentially read out from the display device 6
Only send to. When the route is set, if the scroll operation is completed up to the display coordinates (X4, Y4), the above operation is completed even when confirming the route, the preceding read is stopped, and the display data is stored in the map data storage area 28. Also, the operation of sequentially reading out is stopped.

As described above, in the fourth embodiment, it is possible to scroll the map display exactly as in the first time without using the scroll key when checking the traveling route for the second time and thereafter. it can. That is, the first scroll operation is learned by the above operation. Therefore, even when the vehicle is being driven, it is possible to check the traveling route any number of times without using hands after the second time.

In the fourth embodiment, the recording medium is MD-
Although the RAM 9a is used, it may be the CD-ROM 1a. In this case, the configurations and operations of the control unit 5 and the RAM 8a are the same as the above operations, and the map address is stored in the map address storage area 22a shown in FIG. Also, C
The operation as the D driver 1 is similar to that of the first embodiment.

Example 5. 9 is a block circuit diagram of a fifth embodiment according to the invention of claim 6, and the same reference numerals as those in FIG. 1 denote the same or corresponding portions. In Example 4 above,
The display coordinate storage area 30 was in the RAM 8a, but in the fifth embodiment, the display coordinates are stored in the MD-RAM 9a as shown in FIG. Reference numeral 30a is a display coordinate recording area provided in the MD-RAM 9a, and 22c is a map address recording area.

The operation will be described below. However, the overlapping parts with the above-mentioned first to fourth embodiments are omitted. First, at the time of the first confirmation of the traveling route, the map A including the display coordinates of the current position (Xn, Yn) = (X1, Y1) from the MD driver 9
31 is input to the control unit 5 and temporarily stored in the RAM 8a. Next, the map A31 is expanded into display data and displayed. At this time, the display coordinates (X1, Y1) are input to the MD driver 9 by the control unit 5. Display coordinates (X1, Y
1) is once stored in the MD driver 9 and then MD-RA
It is recorded in the display coordinate recording area 30a of M9a. Also,
The map address of the map A31 is the map address storage area 2
2c, or in the map address recording area 22 in the MD driver 9.

Thereafter, the display coordinates are (X1, Y1) → (X2, Y2) → (X3, Y3) → (X
4, Y4), the display coordinates at that time are input to the MD driver 9 by the control unit 5 when the display data is displayed. These display coordinates are also the same as above.
Once stored in the MD driver 9, the MD-RAM 9a
Is recorded in the display coordinate recording area 30a. Map B
The map addresses of 32 to map D34 are also recorded in the map address storage area 22c or the map address recording area 22.

Next, when the traveling route is confirmed for the second time and thereafter, the display coordinates and the map address are displayed in the display coordinate recording area 30a.
Since it is stored in the map address storage area 22c or the map address recording area 22, the control unit 5 first reads the display coordinates (corresponding to the scroll start point) and the map A31 in advance with respect to the current position (Xn, Yn). Instruct. These display coordinates (X1, Y1) from the MD-RAM 9a
When the map A31 is read out, it is temporarily stored in the MD driver 9. Here, the display coordinates are (X1, Y1) → (X when the MD driver 9 or the RAM 8a has a margin.
It is also possible to read from the MD-RAM 9a for all the processes from 2, Y2) to (X3, Y3) to (X4, Y4). At this time M
It is stored in the D driver 9 once, or is stored in the RAM 8a by the control unit 5 as it is.

Next, in order to display the display area A35 centered on the current position (Xn, Yn) = display coordinates (X1, Y1), the control section 5 sends a request to read the map A31 to the MD driver 9. The map A31 is read out, stored in the RAM 8a, expanded into display data, and displayed. The display coordinates are sequentially read from the RAM 8a during scrolling, and the control unit 5 calculates the display area accordingly,
The corresponding display data is displayed. At this time, when the map A31 is read from the MD driver 9, the preceding read request is given from the control unit 5. The MD driver 9 refers to the contents of the map address storage area 22c or the map address recording area 22, and the next map B32 is MD-R.
It is read from the AM 9a and temporarily stored. Then R
When there is no display coordinate or display data in the AM 8a, the control unit 5 issues a read request to the MD driver 9, so that the next display coordinate or map B32 is read and R
It is replenished in the AM 8a. Below, the map data is Map C3
3 → Map D34 are read in advance in order from the MD-RAM 9a and temporarily stored in the MD driver 9. When the display data is insufficient, the RAM 8a is replenished and expanded into the display data.

As described above, even when the display coordinates are recorded in the MD-RAM 9a, the map display can be scrolled without operating the scroll key when the traveling route is confirmed for the second time and thereafter. Further, although the display coordinates for one traveling route are recorded in the above operation, the display coordinates may be recorded for different traveling routes. At this time, the display coordinates are recorded in the display coordinate recording area 30a after the route identification code is added in the MD driver 9 according to the instruction of the control unit 5 at the time of the first traveling route confirmation. Therefore, at the time of the second and subsequent confirmations on the same travel route, the route identification code is designated by the control unit 5, and the display coordinates are read from the MD-RAM 9a accordingly.

Example 6. 10 is a block circuit diagram of Embodiment 6 according to claim 7 of the present invention, the same reference numerals as in FIG. 9 denote the same or corresponding portions, and 30b denotes a map rerecording area, which is sequentially output from the control unit 5. The created map data is sequentially recorded. Next, the operation will be described. However,
The same parts as those in Examples 1 to 5 are omitted. First, the map A including the display area A35 at the time of the first traveling route confirmation
When 31 is read from the CD-ROM 1a and once stored in the RAM 8a, it is expanded into display data and then displayed. At this time, the map A31 stored in the RAM 8a is M
It is input to the D driver 9 and temporarily stored. Then M
It is recorded in the map re-recording area 30b of the D-RAM 9a.
The map address of the map A31 is recorded in the map address storage area 22c, and the current position (Xn, Yn) = display coordinates (X1, Y1) is recorded in the display coordinate recording area 30a.
Hereinafter, the map B32 to the map D34 are recorded in the map re-recording area 30b in the order of scrolling operation, and the respective map addresses are also sequentially recorded in the map address storage area 22c. Furthermore, the display coordinates are also temporarily stored in the MD driver 9 in the order calculated by the control unit 5, and then recorded in the display coordinate recording area 30a.

Next, when the traveling route is confirmed for the second time and thereafter, the map A31 is read from the map re-recording area 30b by the preceding reading, and the map address is read from the map address storage area 22c and stored in the MD driver 9. Once remembered. However, the map address may be immediately stored in the RAM 8a. Further, the display coordinates are read from the display coordinate recording area 30a and stored in the RAM 8a. afterwards,
The display area A35 is calculated from the first display coordinates (X1, Y1) stored in the RAM 8a, and the corresponding map A31 is M.
The data is read from the D driver 9, expanded into display data, and displayed. In the following order, display data is displayed one after another according to the next display coordinates. Here, when there is no display data in the RAM 8a, the map B32 to the map D34 are sequentially read and developed by the MD driver 9 and are supplemented by the display data in the RAM 8a. At this time, when the previous map is read from the MD driver 9 according to the map address stored in the MD driver 9 or in the RAM 8a, the next map (the map B32 when the map A31 is read) is read.
Will be read ahead from the MD-RAM 9a, and M
It is temporarily stored in the D driver 9.

By the above operation, the map can be automatically scrolled without using the scroll key at the time of confirming the traveling route for the second time and thereafter, just as the map is scrolled at the time of confirming the traveling route for the first time. Further, the map data read from the CD-ROM 1a at the time of the first traveling route confirmation, the map address calculated by the control unit 5, and the display coordinates are:
All are recorded in a predetermined area of the MD-RAM 9a. Then, only the MD-RAM 9a is accessed by the MD driver 9 when the traveling route is confirmed for the second time and thereafter.

[0077]

As described above, according to the invention of claim 1, when the traveling route is confirmed by scrolling the map display at the same place a plurality of times, the scroll operation of the map display at the time of the first traveling route confirmation. The map addresses are stored in the map address storage means in the order designated by the map display means in accordance with the above. Therefore, when confirming the traveling route for the second time and thereafter, the map addresses are stored in the map medium in the order stored in the map address storage means. If the information is read, the same scroll operation as that at the time of the first confirmation of the traveling route can be performed. Moreover, since the operation of reading the map information from the recording medium and temporarily storing it in the storage means is performed prior to the map address designation to the map display means, when the map information read request is issued from the map display means, the corresponding processing is performed. Since the time is saved and the map information is immediately sent from the storage means to the map display means, it is possible to speed up the scroll operation of the map display at the time of confirming the traveling route after the second time.

According to the second aspect of the present invention, when the traveling route is confirmed by scrolling the map display at the same location a plurality of times, it is stored in the map address storage means at the second and subsequent traveling route confirmations. In order, when the map information is read from the recording medium prior to the map address designation of the map display means, the adjacent map information is also read in addition to the map information and stored in the storage means. Even if the map address stored in the map address storage means and the instruction address of the map display means are different when the map information read request is issued by the means, the adjacent map in the storage means is searched and corresponds to the instruction address. Since the adjacent map is read, it is possible to save the time until the map information is read from the recording medium and temporarily stored in the storage means. It is possible to speed up the scrolling operation of the map display at times onward travel route confirmation.

According to the invention of claim 3, when the traveling route is confirmed by scrolling the map display at the same location a plurality of times, the map display is performed according to the scroll operation of the map display at the time of the first traveling route confirmation. Since the map addresses are recorded on the recording medium by the recording means in the order designated by the means, the map addresses are sequentially read out from the recording medium when the traveling route is confirmed for the second time and thereafter, and another map address of the recording medium is correspondingly read. If the map information is read from the area, it is possible to perform the same scroll operation as that at the time of confirming the first traveling route. Moreover, the operation of reading the map information from the recording medium and temporarily storing it in the storage means is performed prior to the map address designation of the map display means, so that when the map information read request is issued from the map display means, the corresponding processing is performed. Since the time is saved and the map information is immediately sent from the storage means to the map display means, it is possible to speed up the scroll operation of the map display at the time of confirming the traveling route after the second time.

According to the invention of claim 4, when the operation of confirming the traveling route by scrolling the map display of the same place a plurality of times is performed for a plurality of different traveling routes,
At the time of the first travel route confirmation regarding each travel route, the map address is recorded in the recording medium together with the route identification address in the recording medium in the order designated by the map display unit according to the scroll operation of the map display. At the time of confirming the traveling route for each traveling route for the second time and thereafter, the map address is read out in sequence from the recording medium together with the route identification address and stored in the map address storage means. If the information is read, it is possible to perform the same scrolling operation as when the first traveling route confirmation regarding the traveling route indicated by the route identification address is performed. Moreover, the operation of reading the map information from the recording medium and temporarily storing it in the storage means is performed prior to the map address designation of the map display means, so that when the map information read request is issued from the map display means, the corresponding processing is performed. Since time is saved and the map information is immediately sent from the storage means to the map display means, the scrolling operation of the map display can be speeded up at the time of confirming the second and subsequent travel routes for each travel route. .

Further, according to the invention of claim 5, when the traveling route is confirmed by scrolling the map display at the same place a plurality of times, the display coordinate storage means is displayed in accordance with the scroll operation at the time of the first traveling route confirmation. The display coordinates of the map are stored in the order in which they are moved, and the map addresses are stored in the map address storage means in the order designated by the map display means. Purposely, the display coordinates of the map are sequentially read out from the display coordinate storage means to calculate the respective display areas, and the necessary map information is read out from the recording medium in order and displayed as stored in the map address storage means. Therefore, it is possible to automatically perform the same scrolling operation as that at the time of confirming the traveling route for the first time without any external operation. Moreover, the operation of reading the map information from the recording medium and temporarily storing it in the storage means is performed prior to the map address designation of the map display means, so that when the map information read request is issued from the map display means, the corresponding processing is performed. Saves time,
Since the map information is immediately sent from the storage means to the map display means, it is possible to speed up the scroll operation of the map display at the time of confirming the traveling route for the second time and thereafter.

Further, according to the invention of claim 6, when the traveling route confirmation is performed by scrolling the map display at the same place a plurality of times, the map display means is provided in accordance with the scroll operation at the time of the first traveling route confirmation. Since the map addresses are recorded in the first area of the recording medium by the recording means in the specified order, and the display coordinates of the map are recorded in the second area of the recording medium by the recording means in the order of movement.
At the time of confirming the traveling route for the second time and thereafter, the map display means automatically reads the display coordinates of the map from the second area of the recording medium in order and calculates each display area, and the necessary map address is stored in the recording medium. In order from the first area of
In response to this, the map information is read out from the third area of the recording medium and displayed, so that the same scroll operation as in the first travel route confirmation can be automatically performed without an external operation. Moreover, the operation of reading the map information from the recording medium and temporarily storing it in the storage means is performed prior to the map address designation of the map display means, so that when the map information read request is issued from the map display means, the corresponding processing is performed. Since time is saved and the map information is immediately sent from the storage means to the map display means,
It is possible to speed up the scrolling operation of the map display at the time of confirming the traveling route after the second time.

According to the seventh aspect of the present invention, when the traveling route is confirmed by scrolling the map display at the same place a plurality of times, the map display means is displayed in accordance with the scrolling operation at the first traveling route confirmation. In the order specified by
The map address is recorded in the first area of the rewritable recording medium by the recording means, and the second area of the upper rewritable recording medium is recorded by the recording means in the order in which the display coordinates of the map are moved.
Area, and the map information is recorded in the third area of the rewritable recording medium by the recording means in the order of being read from the read-only recording medium according to the map address. Therefore, the map display means automatically reads the display coordinates of the map in order from the second area of the recordable and rewritable recording medium in order to calculate each display area when the traveling route is confirmed for the second time and thereafter. Different map addresses are sequentially read from the first area of the recordable and rewritable recording medium, and correspondingly, map information is read and displayed from the third area of the recordable and rewritable recording medium, respectively. It is possible to automatically perform the same scrolling operation as when checking the traveling route of, without using an external operation. Moreover, the operation of reading the map information from the recording medium and temporarily storing it in the storage means is as follows.
By performing the map address designation of the map display means prior to the map information read request from the map display means, the processing time is saved accordingly, and the map information is immediately transferred to the map display means from the storage means. Since it is sent, the scroll operation of the map display at the time of confirming the traveling route for the second time and thereafter can be speeded up. Further, since the map information is recorded in the third area of the upper recordable recording medium in the order in which the map information is read, it is possible to easily perform the map information search at the time of reading.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of a mobile disk reproducing device according to a first embodiment of the present invention.

FIG. 2 is a block circuit diagram showing an internal configuration of an MD driver 9 according to the first embodiment.

FIG. 3 is an explanatory diagram showing contents of a memory 14 in FIG. 1 according to the first embodiment.

FIG. 4 is a time chart for explaining an operation at the time of pre-reading according to the first embodiment.

FIG. 5 is a block circuit diagram of an MD driver 9 using the CD driver 1 of the first embodiment.

FIG. 6 is a block circuit diagram of an MD driver 9 of a moving disk recording / reproducing apparatus according to Embodiments 2 and 3 of the present invention.

FIG. 7 is a block circuit diagram of a moving disk playback device according to Embodiment 4 of the present invention.

FIG. 8 is an explanatory diagram showing movement of a display area with respect to map data in the fourth embodiment.

FIG. 9 is a block circuit diagram of a moving disk recording / reproducing apparatus according to Embodiment 5 of the present invention.

FIG. 10 is a block circuit diagram of a moving disk recording / reproducing apparatus according to Embodiment 6 of the present invention.

FIG. 11 is a block circuit diagram of a conventional mobile disc reproducing apparatus.

[Explanation of symbols]

1 CD driver, 1a CD-ROM, 5 control unit,
6 display device, 7 key switch group, 8, 8a
RAM, 9 MD driver, 9a MD-RAM, 1
0 optical pickup, 11 reproduction amplifier, 12 reproduction signal processing circuit, 13 memory control circuit, 14 memory, 1
5 I / F circuit, 16 recording signal processing circuit, 17 recording amplifier, 18 magnetic head, 19 spindle motor,
20 servo control circuit, 21 microcomputer, 2
2, 22a map data storage area, 22c map address recording area, 23 reproduction data storage area, 24 recorded data storage area, 28 map data storage area and calculation work area, 29 travel locus memory table, 30
Display coordinate storage area, 30a Display coordinate storage area, 30a
b Map re-recording area.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadanobu Ishida 1st Baba Institute, Nagaokakyo City Inside the Imaging System Development Laboratory, Mitsubishi Electric Corporation (72) Inventor Takayuki Horino 2-5-1 Inadera, Amagasaki Mitsubishi Electric (72) Inventor Tadayoshi Sakamoto 2-5-1 Inadera, Amagasaki Mitsubishi Electric Computer Software Co., Ltd.

Claims (7)

[Claims] 1. A reproducing means for reproducing predetermined map information from a recording medium, a storing means for storing the map information reproduced by the reproducing means, and a map read from the storing means by designating a map address. The map display means for displaying information and the map address storage means for storing the map addresses in the order designated by the map display means according to the scrolling operation of the map display are provided, and the map display at the same location can be scrolled a plurality of times. When the traveling route is confirmed by the first traveling route confirmation, the order of map addresses designated by the map displaying means is stored in the map address storing means in accordance with the scrolling operation of the map display, and the second or subsequent traveling is performed. When confirming the route, the map address stored in the map address storage means prior to the map address designation by the map display means. A disk reproducing device for a mobile body, characterized in that the map information is reproduced from the recording medium in the order of and is stored in the storage means. 2. A reproducing means for reproducing predetermined map information and its adjacent map information from a recording medium, a storage means for storing the map information reproduced by this reproducing means and its adjacent map information, and the storage means. Map display means for displaying map information read out by designating a map address or adjacent map information, and map address storage for storing the order of map addresses designated by the map display means in accordance with the scrolling operation of the map display. And a means for confirming the travel route by scrolling the map display at the same location multiple times, 1
At the time of confirming the traveling route for the second time, the order of map addresses designated by the map displaying means is stored in the map address storing means in accordance with the scroll operation of the map display, and at the time of confirming the traveling route for the second time or later, the map displaying means is used. Prior to the map address designation, the map information and its adjacent map information are reproduced from the recording medium in the order of the map addresses stored in the map address storage means and stored in the storage means. A disk reproducing device for a mobile body characterized by. 3. A reproducing means for reproducing predetermined map information from a recording medium, a storing means for storing the map information reproduced by the reproducing means, and a map read by designating a map address from the storing means. A map display means for displaying information and a recording means for recording the order of map addresses designated by the map display means in accordance with the scrolling operation of the map display are provided, and the map display at the same location is scrolled a plurality of times to make a traveling route. When the confirmation is performed, the order of the map addresses designated by the map display means is recorded on the recording medium according to the scroll operation of the map display at the time of the first traveling route confirmation,
At the time of confirming the traveling route for the second time and thereafter, the map information is reproduced from another area of the recording medium in the order of the map addresses recorded on the recording medium prior to the map address designation by the map displaying means and the storing means. A disk recording / reproducing apparatus for a mobile object, which is configured to be stored in a disk. 4. A reproducing means for reproducing predetermined map information from a recording medium, a storing means for storing the map information reproduced by the reproducing means, and a map read by designating a map address from the storing means. The map display means for displaying information and the recording means for recording the order of the map addresses designated by the map display means according to the scrolling operation of the map display and the route identification address thereof are provided, and the map display at the same location is performed a plurality of times. When the operation of confirming the traveling route by scrolling is performed for a plurality of different traveling routes, at the time of the first traveling route confirmation regarding each traveling route, the map address designated by the map display means is displayed according to the scroll operation of the map display. The order and its route identification address are recorded on a recording medium, and when confirming the traveling route for each traveling route after the second time, The map information is reproduced from another area of the recording medium in the order of the map addresses recorded in the recording medium prior to the map address designation by the map displaying means and stored in the storing means. A disk recording / reproducing device for a mobile object, characterized in that 5. A reproducing means for reproducing predetermined map information from a recording medium, a storing means for storing the map information reproduced by the reproducing means, and a map read by designating a map address from the storing means. A map display means for displaying information, a map address storage means for storing the order of map addresses designated by the map display means according to a scroll operation of the map display, and a display coordinate moved according to the scroll operation for the map display. When the traveling route is confirmed by scrolling the map display at the same place a plurality of times, the display coordinate storing means for storing the order is stored. When the traveling route is confirmed for the first time, the map displaying means corresponds to the scroll operation of the map display. The map address order designated by is stored in the map address storage means, and the display coordinates of the map are moved by the display coordinate storage means. The order is stored, and at the time of confirming the traveling route for the second time and thereafter, the display coordinates of the map are automatically read in order from the display coordinate storage means by the map display means, the display areas are respectively calculated, and the map display means is displayed. The map information is reproduced from the recording medium in the order of the map addresses stored in the map address storage means prior to the map address designation by the above, and is stored in the storage means. Disc player for body. 6. A reproducing means for reproducing predetermined map information from a recording medium, a storing means for storing the map information reproduced by the reproducing means, and a map read by designating a map address from the storing means. The map display means for displaying information and the order of map addresses designated by the map display means according to the scroll operation of the map display are recorded in the first area of the recording medium, and moved according to the scroll operation of the map display. A recording means for recording the order of the displayed coordinates in the second area of the recording medium, and when the traveling route is confirmed by scrolling the map display at the same location a plurality of times, the map at the time of the first traveling route confirmation The order of the map addresses designated by the map display means in accordance with the scrolling operation of the display is recorded in the first area of the recording medium, and the display coordinate storage means stores the order. The moving order of the display coordinates shown in the figure is recorded in the second area of the recording medium, and the display coordinates of the map reproduced by the reproducing means are displayed by the map displaying means when the traveling route is confirmed for the second time and thereafter. Necessary map information is reproduced from the third area of the recording medium in the order of the map addresses calculated and reproduced by the reproducing means prior to the map address designation by the map displaying means and stored in the storing means. A disk recording / reproducing apparatus for a mobile body, which is configured as described above. 7. A reproduction means for reproducing predetermined map information from a reproduction-only recording medium and a recordable / rewritable recording medium, a storage means for storing the map information reproduced by this reproduction means, and a map from this storage means. A map display means for displaying the read map information by designating an address, and a first recording medium capable of recording and re-recording the order of the map addresses designated by the map display means according to the scroll operation of the map display. The recording medium is recorded in the area and the order of the display coordinates moved according to the scroll operation of the map display is recorded in the second area of the upper recordable recording medium, and further, the read-only recording medium is recorded according to the map address. Recording means for recording the above-mentioned map information in the third area of the recordable and rewritable recording medium in the order read from the above, and scrolling the map display at the same location a plurality of times. When the traveling route is confirmed by the first traveling route confirmation, the order of the map addresses designated by the map display means is recorded in the first area of the rewritable recording medium according to the scroll operation of the map display at the time of the first traveling route confirmation. At the same time, the moving order of the display coordinates of the map is recorded in the second area of the rerecordable recording medium by the display coordinate storage means, and further read from the reproduction-only recording medium according to the map address. The order of the map information is recorded in the third area of the recordable and rewritable recording medium, and the display coordinates of the map reproduced by the reproducing means are displayed in the display area by the map displaying means when the traveling route is confirmed for the second time and thereafter. A third recordable and rewritable recording medium in the order of the map addresses which are respectively calculated and reproduced by the reproducing means prior to the map address designation by the map displaying means. Map information required from the area is reproduced moving body disk recording and reproducing apparatus characterized by being configured so as to be stored in the memory means.