JP2010003398A - Recording medium, navigation system, portable terminal, and optical disk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording medium, a navigation system, and a portable terminal, capable of sharing user data even in an environment where a usual favorite navigation system changes, and using one and the same user interface. <P>SOLUTION: The navigation system is provided with a drive unit 1 to which a combination Blu-ray Disc (R) 10 having a ROM layer for recording a navigation application program and a RAM layer for recording user data including navigation data is attachable, and a controller 2 for executing the application program read from the ROM layer of the combination Blu-ray Disc (R) 10 by the drive unit 1 on the basis of the navigation data read from the RAM layer of the combination Blu-ray Disc (R) 10 by the drive unit 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a recording medium, a navigation system, a portable terminal, and an optical disc. More particularly, the present invention relates to a recording medium on which map data and the like are recorded, a navigation system, a portable terminal, and an optical disc using the recording medium.

  In recent years, car navigation systems for guiding roads when driving a vehicle have been widely used. In addition, a system for navigating pedestrians is also popular in small information devices such as mobile phones. In these systems, the positions of vehicles and pedestrians are grasped by GPS (Global Positioning System) and the like, and the route to the destination is guided to the driver using a display screen, voice, and the like.

  Recently, in addition to simply guiding the route from the current location to the destination, user data (such as user travel records and new road information obtained from user travel records) is recorded, and navigation according to the user is performed. It is a bi-directional thing to do.

  For example, Patent Document 1 discloses a technique for creating new road information from a user's travel locus and recording it on a recording medium. Patent Document 2 discloses a technique in which a car navigation system reads position information written in advance at home by a user. Further, Patent Document 3 discloses a technique for automatically updating a map by generating new road information from a travel locus when traveling on a road that is not on the map.

  However, these navigation software are generally attached to the car navigation system itself, so when using another car's navigation system, for example, when using another person's car or rental car, their own user data is stored. Can't share.

  For example, when renting a car or changing cars, user data must be recreated from the beginning.

In addition, each navigation system generally has a different interface, and when riding in a car that is not normally used, a user needs a great deal of effort to get used to the new user interface.
JP 7-49993 A Japanese Patent Laid-Open No. 11-94577 JP 2004-251790 A

  Accordingly, an object of the present invention is to provide a recording medium, a navigation system, a portable terminal, and a recording medium that can share user data and use the same user interface even when a navigation system different from a navigation system that is normally used is used. To provide an optical disc.

In order to solve the above problems, the recording medium of the present invention provides:
A recording medium detachable from the recording / reproducing apparatus,
A read-only recording unit in which at least an application program for navigation is recorded;
And a recordable recording unit in which user data including navigation data is recorded.

  According to the recording medium configured as described above, in the navigation system, the navigation application program stored in the read-only recording unit is read, and the user data including the navigation data recorded in the recordable recording unit is read. When the navigation application program is executed by the navigation system, the route guidance is performed using the navigation data included in the user data. By standardizing a navigation system that executes navigation application programs using such user data navigation data as a system with a common structure and function, a navigation system that differs from the navigation system that users normally use Even when using, user data can be shared and the user interface can be shared. The read-only recording unit is a recording unit that is prohibited from being written, and can protect data that must not be erased or rewritten on recorded application programs for navigation.

  In one embodiment, the recording medium is an optical disc in which a read-only recording layer that is the read-only recording unit and a recordable recording layer that is the recordable recording unit are stacked.

  According to the above embodiment, the use of an optical disc in which the read-only recording layer that is the read-only recording unit and the recordable recording layer that is the recordable recording unit are used as a recording medium makes it easy to handle. This makes it easy to transfer between navigation systems.

  In one embodiment, the recordable recording layer, which is the recordable recording section, includes a first recording layer that cannot be rewritten after recording, and a second recording layer that can be written a plurality of times. And a recording layer.

  According to the embodiment, the first recording layer that cannot be rewritten after recording among the recordable recording layers that are the recordable recording unit, for example, user personal authentication that does not need to be changed. Write data for. In addition, the second recording layer that can be written a plurality of times in the recordable recording layer that is the recordable recording unit includes map data or route information that needs to be updated included in the user data. Write navigation data.

In the recording medium of one embodiment,
A disk-shaped substrate;
The recordable recording layer formed on the disc-shaped substrate;
The read-only recording layer formed on the recordable recording layer;
An optical disc having a cover layer formed on the read-only recording layer.

  According to the embodiment, a disk-shaped substrate, the recordable recording layer formed on the disk-shaped substrate, the read-only recording layer formed on the recordable recording layer, By using an optical disc having a cover layer formed on the read-only recording layer as a recording medium, the recordable recording layer and the read-only recording layer have a two-layer structure. It is possible to reduce the movement of the pickup when alternately reading the data recorded in the position and recorded in the recordable recording layer and the read-only recording layer, and the reading operation and the writing operation can be speeded up. Therefore, it is particularly effective for speeding up navigation in which disk access is complicated. Furthermore, the two-layer structure has a feature that the recording capacity can be greatly increased.

  In the recording medium of one embodiment, an operating system program is recorded in the read-only recording unit.

  According to the embodiment, since the operating system program is recorded in the read-only recording unit, the same operating system is used even when the navigation system different from the navigation system that the user normally uses is used. Therefore, the same user interface can be used between different navigation systems. It is also possible to prevent the operating system program from being rewritten accidentally.

  In the recording medium of one embodiment, the read-only recording unit is logically prohibited from writing.

  According to the above-described embodiment, writing to the read-only recording unit is logically prohibited, so that writing to the read-only recording unit is enabled by releasing the logical prohibition, and the navigation application The program etc. can be updated at once.

  In the recording medium of one embodiment, the read-only recording unit is physically prohibited from writing.

  According to the above-described embodiment, writing to the read-only recording unit is physically prohibited, so that a navigation application program or the like recorded in the read-only recording unit may be rewritten due to a malfunction of the navigation system or the like. There will be no safety.

In the navigation system of the present invention,
Any one of the recording media described above is detachable, and a recording / reproducing apparatus that reads and writes the mounted recording medium;
Based on the navigation data read from the recordable recording unit of the recording medium by the recording / reproducing device, the application program read from the read-only recording unit of the recording medium by the recording / reproducing device is executed. And a control device.

  According to the above configuration, the navigation application program stored in the read-only recording unit of the recording medium attached to the recording / reproducing apparatus is read, and the navigation data recorded in the recordable recording unit is included. Read user data. When the navigation application program is executed by the control device, the route guidance is performed using the navigation data included in the user data. By standardizing a navigation system that executes navigation application programs using such user data navigation data as a system with a common structure and function, a navigation system that differs from the navigation system that users normally use Even when using, user data can be shared and the same user interface can be used.

In the navigation system of one embodiment,
A navigation data acquisition unit for acquiring the navigation data;
The control device, when executing the navigation application program, stores the navigation data acquired by the navigation data acquisition unit into the recordable recording unit of the recording medium by the recording / reproducing device. The recording / reproducing apparatus is controlled to write.

  According to the embodiment, the control device controls the recording / reproducing device when the navigation application program is being executed, and the navigation data acquired by the navigation data acquiring unit is transmitted by the recording / reproducing device. Write to the recordable recording part of the recording medium. Here, as the navigation data acquired by the navigation data acquisition unit, for example, in a car navigation system, there are various data of an automobile, data input by a user during a navigation operation, travel locus data, and the like.

In the navigation system of one embodiment,
A buffer memory for recording the navigation data acquired by the navigation data acquisition unit;
The control device controls the recording / reproducing device to write the navigation data read from the buffer memory to the recordable recording unit of the recording medium.

  According to the above embodiment, the control device controls the recording / reproducing device to write the navigation data read from the buffer memory to the recordable recording unit of the recording medium, thereby writing to the recording medium. The writing frequency can be reduced and the writing operation to the recording medium can be performed efficiently. Here, the writing operation may be performed when the navigation operation is completed, the writing operation may be performed when the capacity of the data recorded in the buffer memory exceeds a predetermined value, or the data is recorded in the buffer memory. The write operation may be performed every predetermined time when there is data. Also, a write operation combining these may be used.

  In the navigation system of one embodiment, the control device records the navigation data recorded in the recordable recording unit of the recording medium with respect to the navigation data to be updated acquired by the navigation data acquiring unit. The recording / reproducing apparatus is controlled so as to update the data for use.

  According to the embodiment, the control device controls the recording / reproducing device, and the navigation data recorded in the recordable recording unit of the recording medium for the navigation data to be updated acquired by the navigation data acquiring unit. By updating the data for use, it is possible to reliably update the data for navigation of the recordable recording unit.

  In the navigation system of the embodiment, the recording / reproducing apparatus reads data from the read-only recording unit or the recordable recording unit of the recording medium, and also records the recordable recording unit of the recording medium. Write data to.

  In the navigation system of one embodiment, the control device reads the operating system program recorded in the read-only recording unit of the recording medium before reading the application program from the read-only recording unit of the recording medium. The recording / reproducing apparatus is controlled to read, and the read operating system program is executed.

  According to the embodiment, before reading the application program from the read-only recording unit of the recording medium, the control device controls the recording / reproducing device to read the operating system program recorded in the read-only recording unit of the recording medium. By executing the read operating system program, a highly versatile operating system program that is the basis of control can be introduced into the navigation system and standardized.

  In the navigation system according to the embodiment, the control device may read and write the map data of the navigation data to the recordable recording unit of the recording medium. To control.

  According to the embodiment, the recording / reproducing apparatus is controlled by the control device, and the map data of the navigation data is read and written to the recordable recording unit of the recording medium. A navigation operation is performed using map data, and new map data can be written and updated for map data that needs to be updated. It is also possible to update the map data collectively for the recordable recording portion of the recording medium.

  In one embodiment of the navigation system, the control device controls the recording / reproducing device so as to read and write content data to the recordable recording unit of the recording medium.

  According to the above embodiment, the control device controls the recording / playback device to read and write content data to the recordable recording unit of the recording medium, thereby providing a navigation system that the user normally uses. Even when different navigation systems are used, content data such as music, video, and images can be read and reproduced.

  Further, the mobile terminal of the present invention is characterized in that any one of the above navigation systems is mounted.

  According to the above configuration, the user data can be shared and the same user interface can be used even when the mobile terminal is changed by installing the navigation system.

In the optical disc of the present invention,
In an optical disc readable by a navigation system,
A boot program for preparing an execution environment for application programs and a navigation program for performing navigation are recorded.
The navigation program is a program that can be executed in an execution environment of an application program arranged by the boot program.

  According to the above configuration, user data can be shared and the same user interface can be used even in an environment where the navigation system that is normally used is changed.

  As is clear from the above, according to the recording medium of the present invention, user data can be shared even when a navigation system different from the navigation system that is normally used is used, and the navigation system can be used with the same user interface. Can do.

  In addition, according to the navigation system of the present invention, it is possible to provide a navigation system that can share user data and use the same user interface even when a navigation system different from a navigation system that is normally used is used.

  According to the portable terminal of the present invention, it is possible to provide a portable terminal that can share user data and use the same user interface even when the portable terminal changes.

  Also, according to the optical disc of the present invention, user data can be shared and the navigation system can be used with the same user interface even when a navigation system different from the navigation system that is normally used is used.

  Hereinafter, a recording medium, a navigation system, a portable terminal, and an optical disc according to the present invention will be described in detail with reference to the illustrated embodiments. The “recording medium” in the present invention is detachable from the recording / reproducing apparatus only by the medium portion, and is a detachable HDD (hardware / removable) that is attached and detached together with recording means (such as a write head) for recording on the medium. Disc drive).

[First Embodiment]
FIG. 1 is a block diagram showing a configuration of a car navigation system as an example of a navigation system using a recording medium according to the first embodiment of the present invention.

  As shown in FIG. 1, the car navigation system of the first embodiment includes an optical disc 10 such as a DVD (Digital Versatile Disc) disc as an example of a recording medium or a Blu-ray disc as a next generation optical disc. Drive device 1 as an example of a recording / reproducing device to which the camera is mounted, a control device 2 that controls the drive device 1 to read and write the optical disc 10, and detects the current position of the vehicle to control position information A vehicle position detection unit 3 that outputs to the device 2, a speaker 4 that is controlled by the control device 2 and performs navigation for the user by voice guidance, and is controlled by the control device 2 to display a map and the position of the host vehicle. Controlled by the display unit 5 including a liquid crystal display or the like, and the control device 2, and a key operation from the user is performed. A key input unit 6 for receiving and a buffer memory 7 are provided. Here, the optical disk most suitable for the present invention will be described. The optical disk according to the present invention has both a reproduction area as an example of a read-only recording unit in which an OS (Operating System) program, a navigation program, and the like are recorded, and a recording area for recording user data, that is, a reproduction area. And a recording area.

  The control device 2 includes a CPU (Central Processing Unit) and an input / output device, and controls the entire car navigation system.

  The vehicle position detection unit 3 includes a GPS (Global Positioning System) receiver 3a, a gyro 3b that detects the rotation of the vehicle, and a vehicle speed pulse sensor 3c that detects the vehicle speed. The GPS receiver 3a receives position information radio waves from GPS satellites via the GPS antenna 11, and calculates the latitude and longitude indicating the current position based on the received position information.

  Note that a portion for displaying information to the user, such as the speaker 4, the display unit 5, and the key input unit 6, and inputting data for the user is referred to as a user interface. The display unit 5 may include a touch panel and accept key operations from the user.

  FIG. 2 is a schematic diagram showing the optical disk 10 and the drive device 1 used in the car navigation system. The optical disk 10 is inserted into the insertion slot 1a of the drive device 1 shown in FIG.

  Preferably, the optical disc 10 is a Blu-ray Disc (registered trademark) having a two-layer or three-layer structure. A Blu-ray disc has a recording density about five times higher than that of a DVD. For example, a dual-layer disc has a recording capacity of 50 GB.

  As shown in FIG. 3A, the optical disc 10 used in the car navigation system having the configuration shown in FIG. 1 has a ROM (Read Only Memory) layer 33 as an example of a read-only recording layer that is a read-only recording unit. And a RAM (Random Access Memory) layer 31 as an example of a recordable recording layer which is a recordable recording unit.

  In the optical disk 10, a RAM layer 31, an intermediate layer 32, a ROM layer 33, and a cover layer 34 are sequentially formed on a disk substrate 3 as an example of a disk-shaped base material. The disk substrate 30 is made of polycarbonate having a thickness of 1.1 mm. The material of the disk substrate is not limited to this, and may be polyolefin resin or metal.

  The cover layer 34 is made of, for example, an ultraviolet curable resin having a thickness of 75 μm. The material of the cover layer 34 only needs to have high transmittance at the wavelength of the reproduction light, and may be formed of a polycarbonate film and a transparent adhesive, or a hard coat for surface protection may be provided on the surface. . Furthermore, the thickness may be changed according to the optical system of the reproducing apparatus, and for example, a 0.6 mm polycarbonate substrate may be used.

  The ROM layer 33 is made of silicon nitride having a thickness of 10 nm, for example. The thickness or material of the ROM layer 33 is not limited to this, and is a dielectric that has a refractive index of 2.2 or more and 2.5 or less at the reproduction light wavelength and has translucency at the reproduction light wavelength. Any thickness may be used as long as moisture can be prevented from entering the layer 31, and tantalum oxide, for example, may be used. Furthermore, a multilayer structure may be used.

  The intermediate layer 32 is made of, for example, a transparent ultraviolet curable resin having a thickness of 25 μm. Further, on the ROM layer 33 side of the intermediate layer 32, prepits having unevenness corresponding to information recorded in the ROM layer 33 are provided. The intermediate layer 32 is not particularly limited as long as it is a material having a high transmittance at the wavelength of the reproduction light. Further, the thickness may be an appropriate thickness that can separate the recording layers and does not cause a problem of interlayer crosstalk. Furthermore, a multilayer structure may be used.

The RAM layer 31 is composed of, for example, seven thin films. From the reproducing light incident side, the first protective film is ZnS-SiO _{2 with} a thickness of 35 nm, the second protective film is ZrO with a thickness of 5 nm, and the recording layer is GeTeSb ₂ Te _{3 with} a thickness of 10 nm, ZrO with a thickness of 5 nm as a third protective film, ZnS—SiO _{2 with} a thickness of 35 nm as a fourth protective film, ZrO with a thickness of 5 nm as a fifth protective film, and 20 nm as a reflective film APC (AgPdCu) are sequentially laminated. The material, thickness, and number of layers of the RAM layer 31 are not limited to these, and any material that functions as a RAM layer may be used.

  Reading light is condensed on the RAM layer 31 of the optical disc 10 via the cover layer 34, the ROM layer 33, and the intermediate layer 32 to read the recorded information. The reading light covers the ROM layer 33 layer. It is condensed through the layer 34 and the recorded information is read out. Here, the ROM layer 33 of the optical disc 10 is physically prohibited from being written, so that there is no possibility that the navigation application program recorded in the ROM layer 33 will be rewritten due to a malfunction of the navigation system, etc. Increases safety.

  Note that writing to the ROM layer 33 may be logically prohibited. Writing to the ROM layer 33 can be performed by releasing the logical prohibition, and application programs for navigation and the like are updated in a batch. can do.

  Furthermore, the ROM layer 33 stores an OS program and a navigation program. The RAM layer 31 stores map data, OS program update information, navigation program update information, map data update information, and user data.

  Here, the “OS program” is a basic program for controlling the control device 2. The “navigation program” is a program that controls position information processing related to navigation, processing of the display unit 5, processing of a user interface such as the key input unit 6, audio processing output from the speaker 4, and the like. “Map data” includes road information and building information associated with longitude and latitude, peripheral information (stores, facilities, etc.), and shape information of roads and buildings. The “update information” is update data for updating a part of the map data recorded in the RAM layer 31 and the change data of the OS program and the navigation program recorded in the ROM layer 33. “User data” includes user registration information, user-specific navigation information (such as past route history and various eye setting information), content such as music, and the like. The personal authentication data, which is the user registration information, may be used, for example, for starting a car or for payment of ETC (Electronic Toll Collection).

  The configuration of the optical disc 10 is not limited to the two-layer structure shown in FIG. 3A, and a combination Blu-ray disc having the three-layer structure shown in FIGS. 3B and 3C may be used.

  The combination Blu-ray disc shown in FIG. 3B includes a ROM layer 45 as an example of a read-only recording unit and RAM layers 41 and 43 as examples of recordable recording units.

  In this combination Blu-ray disc, a RAM layer 41, an intermediate layer 42, a RAM layer 43, an intermediate layer 44, a ROM layer 45, and a cover layer 46 are sequentially formed on a disk substrate 40. The ROM layer 45 is physically read-only, but may be logically read-only. Reading light is condensed on the RAM layer 41 of the combination Blu-ray disc through the cover layer 46, the ROM layer 45, the intermediate layer 44, the RAM layer 43, and the intermediate layer 42 to read the recorded information. On the other hand, the reading light is condensed through the cover layer 46, the ROM layer 45, and the intermediate layer 44 to read the recorded information, and the reading light is condensed through the cover layer 46 to the ROM layer 45 layer. The recorded information is read out.

  The combination Blu-ray disc shown in FIG. 3C includes a ROM layer 55 as an example of a read-only recording unit, and a RAM layer 51 and an RO layer 53 as examples of a recordable recording unit.

  In this combination Blu-ray disc, a RAM layer 51, an intermediate layer 52, an RO layer 53, an intermediate layer 54, a ROM layer 55, and a cover layer 56 are sequentially formed on a disk substrate 50. The ROM layer 55 is physically read-only, but may be logically read-only.

  The RO layer 53 of this combination Blu-ray disc is a first recording layer that cannot be rewritten after recording, and the RAM layer 51 is a second recording layer that can be written a plurality of times. Reading light is condensed on the RAM layer 51 of the combination Blu-ray disc through the cover layer, 56 ROM layer 55, intermediate layer 54, RO layer 53, and intermediate layer 52 to read the recorded information. In this case, the reading light is condensed through the cover layer 56 ROM layer 55 and the intermediate layer 54 to read the recorded information, and the reading light is condensed through the cover layer 56 to the ROM layer 55 layer. Read recorded information.

  In the combination Blu-ray disc shown in FIG. 3C, the RO layer 53, which is a recordable first recording layer that cannot be rewritten after recording, of the recordable recording layer, which is a recordable recording unit, is changed, for example, Write data for user authentication without the need for. In addition, the RAM layer 51, which is the second recording layer in which writing can be recorded a plurality of times, among the recordable recording layers that are the recordable recording units, is a map that needs to be updated or included in the user data. Write navigation data such as route information.

  Next, the operation of the car navigation system shown in FIG. 1 will be described using the flowchart shown in FIG. 4A.

  First, when the process is started after the power is turned on, the navigation system is activated in step S1. For example, when the car key is turned by the user and the car is turned on, the navigation system is activated.

  Then, after the navigation system is started, the process proceeds to step S2, and the control device 2 (shown in FIG. 1) of the navigation system uses the drive device 1 (shown in FIG. 1) to read the ROM layer 33 (FIG. 3A) of the optical disc 10. The OS program is read from (1), and the OS program is started in step S3.

  Next, it progresses to step S4, and the control apparatus 2 reads a navigation program from the ROM layer 33 of the optical disk 10 based on OS program, and starts a navigation program by step S5.

  Next, it progresses to step S6 and a navigation program operate | moves.

  When the navigation operation is finished and the user turns off the power, the navigation program and the OS program are finished, and the navigation system is finally finished.

  FIG. 4B shows a flowchart for explaining details of steps S1 to S3 in the flowchart shown in FIG. 4A.

  First, in step S101, the navigation system is turned on.

In step S102, a POST (Power On Self Test) program stored in the ROM 22 (shown in FIG. 10) of the control device 2 is executed. Here, the POST program is a hardware diagnostic test that is automatically executed when the power is turned on. Specifically, it is checked whether each functional block such as a memory, a disk controller, or an input button controller is abnormal. This POST program is stored in the ROM 22 of the control device 2 as part of a BIOS (basic input output system) program.
In this embodiment, the BIOS program is used as an example of the system initial program. However, the system initial program is not limited to this, and may be another program such as EFI (Extensible Firmware Interface).

  In step S103, the BIOS program stored in the ROM 22 of the control device 2 is executed. Here, the BIOS (basic input output system) program is one of firmware, and is a program for performing the lowest level input / output with hardware among the programs installed in the computer.

  A program for operating a computer by a human is an OS (Operating System) program such as Windows or MacOS, and a BIOS is a program for mainly controlling hardware.

  In step S104, the BIOS reads the optical disk 10 and reads an MBR (Master Boot Record) in the reading area of the optical disk 10. Here, a dedicated program for reading the optical disc 10 is recorded in the MBR.

  Next, the process proceeds to step S105, and the OS startup program is read according to the information of the master boot record.

  In step S106, the OS program is started by the OS startup program. Here, the OS program provides basic functions commonly used by many application software, such as input / output functions such as keyboard input and screen output, and disk and memory management, and manages the entire computer system. Software (also called “basic software”).

The OS program includes the following.
Windows (Windows 95 (registered trademark), Windows 2000 (registered trademark), Windows Me (registered trademark), Windows XP (registered trademark), Windows Vista (registered trademark))
MacOS (registered trademark)
Linux (registered trademark), Fedora (registered trademark), Ubuntu (registered trademark), etc.

  When the OS program is started, a hardware recognition program is executed to automatically recognize hardware such as the display unit 5, the key input unit 6, and the speaker 4, and a necessary device driver is incorporated.

  Depending on the type of navigation system, the configuration of the key input unit may be different. For example, there are those that allow basic operations on the touch panel, those that recognize cursor keys, execution buttons, and the like, and those that display cautions about buttons that cannot be used.

Further, the hardware recognition program recognizes the monitor performance such as the resolution and the number of pixels of the display unit 5 and outputs an optimal image suitable for the monitor performance. For example, there are the following resolutions of the monitor.
WVGA (Wide Video Graphics Array): 800 x 480 dots VGA (Video Graphics Array): 640 x 480 dots QVGA (Quarter Video Graphics Array): 320 x 240 dots, etc.

  Further, the hardware recognition program recognizes the vehicle position detection unit 3 shown in FIG. 1 as hardware, incorporates a driver, and enables use.

  Then, the navigation program is activated in step S107.

  Next, FIG. 4C shows a flowchart for explaining the end of the navigation operation in step S6 in the flowchart shown in FIG. 4A.

  In step S111, the user turns off the power. For example, pressing and holding the power button of the navigation system or removing the engine key to stop the engine is a power-off operation of the navigation system.

Next, data is stored in step S112. For example, a car navigation system stores a travel history and the like. Turn off the navigation system.
Here, the data is saved when the power of the navigation system is turned off, but the data may be saved at any time.

  Next, it progresses to step S113 and complete | finishes an OS program.

  The car navigation operation will be described with reference to FIG.

  First, when the navigation program is activated, the control device 2 of the navigation system reads map data and user data from the RAM layer 31 of the optical disc 10 in step S11.

  Next, it progresses to step S12 and grasps | ascertains the present position of a vehicle using the GPS receiver 3a (shown in FIG. 1).

  And if the present position of a vehicle is grasped | ascertained, it will progress to step S13, and as shown in FIG. 6, the map and the position of a vehicle are displayed on a display screen by the display part 5 (shown in FIG. 1). In FIG. 6, road information and building information Δ mark are the current position of the car.

  Next, proceeding to step S14, when the destination is set by the user operating the key input unit 6 (shown in FIG. 1), the route is searched. At this time, the destination setting by the user is performed using the key input unit 6 and the touch panel on the display unit 5.

  When setting the destination, the destination candidate may be displayed in advance on the display unit 5 based on the user data read in step S11 so that the user can select it.

  In this route search, the route to the destination is calculated. At this time, a calculation condition (whether or not an expressway is used, a past travel route, etc.), which is one of user data, is read from the RAM layer 31 of the optical disc 10 and reflected in route selection. Further, an optimum route may be selected in consideration of traffic jam information acquired using the communication function.

  When the optimum route is selected, the process proceeds to step S15, where the optimum route is displayed on the screen of the display unit 5, as shown in FIG. At this time, the distance to the destination and the arrival time are also displayed. A voice announcement will also be made.

  Thus, the user is guided by voice or screen display. At this time, traveling data such as a traveling route and a traveling time are recorded in the RAM layer 31 (shown in FIG. 3A) of the optical disc 10.

In addition, when it drive | works the place which is not in map data like the dotted route shown in FIG. 8, it communicates using the communication part 26 (shown in FIG. 10). Specifically, when the vehicle travels in a place not included in the map data, the communication unit 26 makes an inquiry about updated road information to the map data providing company. If there is updated road information, it is recorded as updated map information in the RAM layer 31 of the optical disc 10. Even when there is no updated road information, such new road information may be recorded as user data and reflected at the next navigation.
The communication unit 26 has a function of communicating with a network such as a mobile phone network, VICS (Vehicle Information and Communication System: a system that displays traffic information received from FM multiplex broadcasting or a transmitter on a road in a figure or a character), and the like. And receive update information and traffic jam information.

  Next, in step S17, when the destination is reached, the fact is notified to the user by voice or screen display.

  Further, the arrival time and the like are recorded in the RAM layer 31 of the optical disc 10.

  When the navigation system is turned off by the user after parking at the destination, the operation of the navigation program is terminated.

  Since the OS program and the navigation program are recorded in the ROM layer 33 of the optical disk 10 and the map information, update information, and user data are recorded in the RAM layer 31, the optical disk 10 is inserted into another car navigation system. In this case, the user can receive navigation under the same environment.

  In other words, a car navigation system that is standardized as a system with common configurations and functions between different navigation systems not only shares user data, but also uses the same navigation program, so the user interface can be shared. it can.

  In addition, since the optical disk 10 used in the car navigation system can be read and written in the environment of a personal computer away from the car, the map data is recorded in the RAM layer by the personal computer or the map data is read out. It is possible to write locus data.

  Therefore, for example, a route can be determined by a home personal computer, route information including a destination can be recorded on the optical disc 10, and the optical disc 10 can be used by being mounted on the drive device 1 of the car navigation system of the car.

  Also, an optical disk 10 in which a ROM layer 33 as a read-only recording layer that is the read-only recording unit and a RAM layer 31 as a recordable recording layer that is a recordable recording unit are used as a recording medium. Therefore, handling is simple and transfer between navigation systems can be facilitated.

  Further, as shown in FIG. 3A, a disk substrate 30 as a disk-shaped base material, a RAM layer 31 as a recordable recording layer formed on the disk substrate 30, and the RAM layer 31 are formed. By using the optical disk 10 having the ROM layer 33 as a read-only recording layer and the cover layer 34 formed on the ROM layer 33 as a recording medium, the RAM layer 31 and the ROM layer 33 have a two-layer structure. Therefore, the recording capacity can be greatly increased. Further, when the related data is recorded at the same radial position on the optical disk 10 and the data recorded in the RAM layer 31 and the ROM layer 33 are alternately read out, the movement of the pickup can be reduced, and the access speed is improved. Thus, it is possible to speed up the read operation and the write operation. Therefore, it is particularly effective for speeding up navigation in which the disk access in which the map display changes as the vehicle moves becomes complicated.

  Further, by recording rough map data in the ROM layer 33 of the optical disc 10 and recording detailed map data in the RAM layer 31, it is possible to smoothly enlarge and reduce the map displayed on the display unit 5. It becomes.

  Further, by using the combination Blu-ray disc shown in FIG. 3B, map data is recorded in the RAM layer 41, and landmark data and locus data input by the user are recorded in the RAM layer 43, so that the display unit 5 simultaneously with the map. The displayed landmark data and locus data can be displayed smoothly.

  In addition, since the OS program is recorded in the ROM layer 33, it is possible to easily update the OS program that is the basis of control in a navigation system standardized as a system having a common configuration and function.

  Further, according to the navigation system configured as described above, a user who reads the navigation application program stored in the ROM layer 33 of the optical disc 10 mounted on the drive device 1 and includes the navigation data recorded in the RAM layer 31. Read data. When the navigation application program is executed by the control device 2, the route guidance is performed using the navigation data included in the user data. By standardizing a navigation system that executes navigation application programs using such user data navigation data as a system with a common structure and function, a navigation system that differs from the navigation system that users normally use Even when using, user data can be shared and the same user interface can be used.

  Further, the control device 2 controls the drive device 1 when the navigation application program is executed, and the navigation device acquires the navigation data acquired by the navigation data acquisition unit by the drive device 1 in the RAM of the optical disc 10. Write to layer 31. Here, the navigation data acquisition unit that acquires the navigation data is the vehicle position detection unit 3 or the key input unit 6.

  Further, the control device 2 controls the drive device 1 to write the navigation data read from the buffer memory 7 together in the RAM layer 31 of the optical disc 10, thereby reducing the frequency of writing to the optical disc 10. The writing operation to the optical disc 10 can be performed efficiently. Here, the write operation may be performed when the capacity of the data recorded in the buffer memory 7 exceeds a predetermined value, or the write operation is performed every predetermined time when there is data recorded in the buffer memory 7. Alternatively, a write operation combining these may be used.

  In addition, the control device 2 controls the drive device 1 to update the navigation data recorded in the RAM layer 31 of the optical disc 10 with respect to the navigation data to be updated acquired by the navigation data acquisition unit. The navigation data in the RAM layer 31 is reliably updated.

  Before the application program is read from the ROM layer 33 of the optical disc 10, the control device 2 controls the drive device 1 to read the OS program recorded on the ROM layer 33 of the optical disc 10 and read the read OS program. By executing the program, a highly versatile OS program that becomes the basis of control can be introduced into the navigation system and standardized.

  Further, the control device 2 controls the drive device 1 to read and write the map data of the navigation data to the RAM layer 31 of the optical disc 10, thereby performing the navigation operation with the read map data. At the same time, new map data can be written and updated for map data that needs to be updated. Further, the map data can be updated at once for the RAM layer 31 of the optical disc 10.

  In addition, the control device 2 controls the drive device 1 to read and write content data to and from the RAM layer 31 of the optical disc 10, thereby using a navigation system that is different from the navigation system normally used by the user. Even in such a case, content data such as music, video, and images can be read and reproduced. I can realize my driving environment even in other people's cars.

  FIG. 10 is a block diagram showing the configuration of the upper control device 2, wherein 21 is a CPU (Central Processing Unit), 22 is a ROM (Read Only) in which a BIOS (basic input output system) program is stored. Memory), 23 is a RAM (Random Access Memory) which is a volatile work memory for temporarily storing data, 24 is an HDD (Hard Disk Drive) having a function for storing data in a nonvolatile manner, Reference numeral 25 denotes an input / output interface, 26 denotes a communication unit, and 27 denotes a power switch for the navigation system. Here, the BIOS program is a program executed when the power is turned on.

  Note that the memory is not limited to the HDD 24 and may be a memory having a function of storing data in a nonvolatile manner.

  The CPU 21 is connected to the ROM 22, RAM 23, HDD 24, input / output interface 25, and communication unit 26 via a bus, and via the input / output interface 25, the vehicle position detection unit 3, the speaker 4, and the display unit 5 shown in FIG. The key input unit 6 is accessed.

  When the power switch 27 is turned on and power is supplied from the power supply 20, the control device 2 executes the BIOS program stored in the ROM 22 to perform initial processing based on the BIOS program.

  In addition, the control device 2 has a function of performing processing and arithmetic processing on each part of the navigation system in accordance with a program stored in the optical disk 10 or the HDD 24.

  Next, FIG. 11 is a block diagram showing the configuration of the drive device 1, wherein 71 is an MPU (microprocessing device), 72 is an interface connected to the input / output interface 25 of the control device 2, and 73 is an SDRAM ( (Synchronous dynamic random access memory), 74 is a flash memory, and 75 is a pickup for reading / writing the optical disk 10.

  Here, as the interface 72, SATA (Serial Advanced Technology Attachment), USB (Universal Serial Bus), IEEE 1394, SCSI (Small Computer System Interface), etc. are used. From the viewpoint of versatility and data communication speed, SATA or USB is used. Preferably there is.

  The pickup 75 is driven based on a control signal from the MPU 71, and a light source and a light receiving unit for reading data recorded in the ROM layer 33 and the RAM layer 31 of the optical disc 10 and writing data in the RAM layer 31. It has.

  The flash memory is a non-volatile memory that does not lose its stored contents even when the power is turned off, and functions as a cache memory that temporarily records data recorded on the optical disc 10 as cache data (other than cache data). It also functions as a data memory for recording data). Also, data other than cache data can be recorded in an area of the flash memory where no cache data is recorded.

  Here, “cache data” is data recorded on the optical disk 10 recorded in the flash memory. The “cache memory” temporarily records data recorded on the optical disk 10 and, when data is read from the optical disk 10, reads the data not from the optical disk 10 but from the flash memory. A memory having a function. The flash memory may be a NAND flash memory or a NOR flash memory.

[Second Embodiment]
FIG. 9 is a block diagram showing a configuration of a mobile phone terminal as an example of a mobile terminal equipped with the navigation system of the second embodiment of the present invention.

  As shown in FIG. 9, the mobile phone terminal according to the second embodiment controls a drive device 61 as an example of a recording / reproducing device on which a combination Blu-ray disc 60 as an example of a recording medium is mounted, and the drive device 61. Then, the control device 62 that reads and writes the combination Blu-ray disc 60, the position detection unit 63 that detects the current position and outputs the position information to the control device 62, and is controlled by the control device 62 and receives voice guidance. A speaker 64 that performs navigation for the user, a display unit 65 that is controlled by the control device 62 and that displays a map or a position of the host vehicle, and the like, and is controlled by the control device 2 to perform key operations from the user. A key input unit 66 for accepting and a buffer memory 67 are provided. The combination Blu-ray disc 60 is an optical disc including a reproduction area as an example of a read-only recording unit including an OS (Operation System) program, a navigation program, and the like, and a recording area for recording user data and the like.

  The drive device 61, the control device 62, the speaker 64, the display unit 65, the key input unit 66, and the buffer memory 67 of this cellular phone terminal have the same functions as the car navigation system of the first embodiment, but are portable. In order to increase it, it is desirable to make it smaller and lighter.

  The position detection unit 63 includes a GPS receiver 63a and a gyro 63b. The GPS receiver 63a receives the position information radio wave from the GPS satellite by the GPS antenna 68, and calculates the latitude and longitude indicating the current position based on the received position information.

  Note that a small-diameter disc is applied to the combination Blu-ray disc 60 of the mobile phone terminal in order to improve portability.

  Also, according to this mobile phone terminal, by installing the navigation system, user data can be shared and the same user interface can be used even when the terminal changes.

[Third Embodiment]
FIG. 12 is a block diagram showing a configuration of a personal computer using an optical disk as an example of a recording medium according to the third embodiment of the present invention.

As shown in FIG. 12, the personal computer PC1 of the third embodiment stores a recording medium access unit 200 as an example of a recording / reproducing apparatus to which the optical disc 10 is mounted, a control unit 203, and a BIOS program 204a. A ROM 204, a storage unit 205 in which a program 205a is stored, a RAM 206, a display unit 207, an input unit 208, and a communication unit 209 connected to the Internet network 211 are provided. The personal computer PC1 is supplied with power from the power supply unit 210.
The program 205a stored in the storage unit 205 is an OS (for example, Microsoft Windows) or an application program (for example, Microsoft Word or Excel). The personal computer PC1 can execute the OS and navigation program recorded on the optical disc 10 without executing the OS of the storage unit 205.

  The recording medium access unit 200 includes a control unit 201 and a buffer 202, and performs reading and writing of the RAM layer 31 as well as reading of the ROM layer 33 of the optical disc 10 as an example of the recording medium.

  In the personal computer PC1 having the above-described configuration, the navigation program stored in the ROM layer 33 of the optical disc 10 is started, so that the car navigation can be set at home. In this case, setting with the keyboard or mouse of the input unit 208 while viewing the monitor display of the display unit 207 of the personal computer PC1 is easier to set and the operability is better. In addition, navigation settings can be set in conjunction with information retrieval such as the Internet.

  Conventionally, it is necessary to consider compatibility between an ordinary program and an OS program stored in an HDD of a personal computer. For example, program compatibility with Windows (registered trademark), MacOS (registered trademark), and Linux (registered trademark) is required.

  On the other hand, in the personal computer PC1 of the third embodiment, since the optical disk 10 is a bootable disk with a built-in activation file, it can be activated without depending on the OS. In particular, recent personal computers can be started from an optical drive.

Next, the operation procedure in the personal computer PC1 will be described below.
(1) Turn on the personal computer PC1.
(2) Set the BIOS of the personal computer PC1. In this case, if it is a normal PC, the F2 key or F10 key is pressed. Then, a BIOS setting screen is displayed, and the boot device is set in the recording medium access unit 200 by operating the up and down buttons and the ENTER button.
(3) The optical disk 10 is accessed by the BIOS program, and the OS is booted from the optical disk 10. The starting procedure is the same as in the first embodiment, and the operation at the end is the same (data storage is stored in the RAM layer 31 of the optical disc 10).

  In addition, a navigation program can be executed on the OS of the personal computer PC1. Although the optical disc 10 is a bootable disc, the navigation program of the optical disc 10 is also a program that runs on the OS of the personal computer PC1. In this case, if the OS stored in the storage unit 205 is, for example, Windows, the navigation program recorded on the optical disc 10 is the same as an application program such as Word or Excel that runs on Windows. It is a program corresponding to Windows.

The operation procedure at this time will be described below.
(1) Start Windows according to normal operation.
(2) The optical disk 10 is inserted into the recording medium access unit 200 after Windows is activated.

  Then start the navigation program on Windows. At this time, the navigation program is automatically activated simultaneously with the insertion of the optical disc 10, or the navigation program is activated by a user operation. For example, after the optical disk 10 is inserted, the navigation program is started by specifying an icon displayed on the explorer (Windows user interface) with a pointing device and performing a double click operation.

In this case, the OS of the optical disc 10 is not executed, and only the navigation program is executed on Windows. Therefore, it is possible to operate on Windows simultaneously with other software, and convenience is improved.
For example, it is possible to input the destination of the navigation system at the same time while checking a map or a place name on the Internet.
Further, after setting the destination or the like on the navigation system of the personal computer PC1, the setting is recorded on the optical disc 10. Thereafter, when the optical disk 10 is taken out from the personal computer PC1 and inserted into the navigation system, navigation to the set destination is performed.

  According to the optical disc 10 of the third embodiment, user data can be shared and the same user interface can be used even in an environment where the navigation system that is normally used is changed.

  In the first to third embodiments, a Blu-ray disc is used as a recording medium. However, a CD (Compact Disc), a DVD (Digital Versatile Disc), an MD (Mini Disc), or the like is used. May be.

  In the first to third embodiments, a large capacity HDD, a high-speed flash memory, and a large capacity and easy to carry optical disk recording layer may be combined by taking advantage of each of the application operations.

  For example, temporary data is read / written from / to a flash memory, data such as map data requiring a very large capacity is stored in an HDD, and an OS, a program, user settings, a travel history, etc. are stored in an optical disk. When downloading map data or the like and storing it in the HDD, it is necessary to download it again when the optical disk is used for another car navigation system.

  Further, the optical disk may be a bootable disk. A bootable disc is a disk medium that contains information necessary for starting up the computer. When the computer is started with the bootable disc in a disk drive that supports booting, the computer automatically loads the bootable disc. Start by reading the contents. The bootable disk is a disk provided with a system that can be started when the OS program is not started.

  An optical disc is a disc from which information can be read optically. For example, a BD (Blu-ray Disc), a DVD (Digital Versatile Disc), a CD (Compact Disc: Compact disc) and MD (Mini Disc). Since this optical disk does not include a head or a housing as compared with an HDD, it is inexpensive, lightweight, compact, and can be easily carried, and is convenient for the user.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the first and second embodiments described above, and various modifications can be made within the scope of the present invention.

FIG. 1 is a block diagram showing a configuration of a car navigation system as an example of a navigation system using a recording medium according to the first embodiment of the present invention. FIG. 2 is a schematic diagram showing a combination Blu-ray disc and drive device used in the car navigation system. FIG. 3A is a sectional view of a dual-layer combination Blu-ray disc used in the car navigation system. FIG. 3B is a cross-sectional view of another three-layer combination Blu-ray disc used in the car navigation system. FIG. 3C is a cross-sectional view of another three-layer combination Blu-ray disc used in the car navigation system. FIG. 4A is a flowchart for explaining the operation of the car navigation system. FIG. 4B is a flowchart for explaining details of steps S1 to S3 in the flowchart shown in FIG. 4A. FIG. 4C is a flowchart for explaining the end of the navigation operation in step S6 in the flowchart shown in FIG. 4A. FIG. 5 is a flowchart for explaining the navigation operation of the car navigation system. FIG. 6 is a view showing a display example of the car navigation system. FIG. 7 is a view showing another display example of the car navigation system. FIG. 8 is a view showing another display example of the car navigation system. FIG. 9 is a block diagram showing a configuration of a mobile phone terminal as an example of a mobile terminal equipped with the navigation system according to the second embodiment of the present invention. FIG. 10 is a block diagram showing the configuration of the control device of the car navigation system of the first embodiment. FIG. 11 is a block diagram showing the configuration of the drive device of the car navigation system. FIG. 12 is a block diagram showing the configuration of a personal computer equipped with the navigation system according to the third embodiment of the present invention.

DESCRIPTION OF SYMBOLS 1,61 ... Drive apparatus 2,62 ... Control apparatus 3 ... Vehicle position detection part 3a ... GPS receiver 3b ... Gyro 3b ... Vehicle speed pulse sensor 4,64 ... Speaker 5,65 ... Display part 6,66 ... Key input part 7 , 67 ... Buffer memory 10 ... Optical disk 11, 68 ... GPS antenna 21 ... CPU
22 ... ROM
23 ... RAM
24 ... HDD
25 ... Input / output interface 26 ... Communication unit 27 ... Power switch 30,40,50 ... Disk substrate 31,41,43,51,43 ... RAM layer 32,42,44,52,54 ... Intermediate layer 33,45,55 ... ROM layer 34,46,56 ... cover layer 53 ... RO layer 63 ... position detector 71 ... MPU
72 ... Interface 73 ... SDRAM
74: Flash memory 75 ... Pickup 200 ... Recording medium access unit 201 ... Control unit 202 ... Buffer 203 ... Control unit 204a ... BIOS program 204 ... ROM
205a ... Program 205 ... Storage unit 206 ... RAM
207 ... Display unit 208 ... Input unit 209 ... Communication unit PC1 ... Personal computer

Claims (17)

A recording medium detachable from the recording / reproducing apparatus,
A read-only recording unit in which at least an application program for navigation is recorded;
And a recordable recording unit on which user data including navigation data is recorded. The recording medium according to claim 1,
A recording medium comprising: a read-only recording layer that is the read-only recording unit; and a recordable recording layer that is the recordable recording unit. The recording medium according to claim 2,
The recordable recording layer, which is the recordable recording section, has a first recording layer that cannot be rewritten after recording, and a second recording layer that can be written a plurality of times. recoding media. The recording medium according to claim 2 or 3,
A disk-shaped substrate;
The recordable recording layer formed on the disc-shaped substrate;
The read-only recording layer formed on the recordable recording layer;
A recording medium comprising an optical disc having a cover layer formed on the read-only recording layer. In the recording medium according to any one of claims 1 to 4,
An operating system program is recorded in the read-only recording unit. In the recording medium according to any one of claims 1 to 5,
The recording medium characterized in that the read-only recording unit is logically prohibited from writing. In the recording medium according to any one of claims 1 to 5,
The read-only recording unit is a recording medium in which writing is physically prohibited. A recording / reproducing apparatus, wherein the recording medium according to any one of claims 1 to 7 is detachable, and reads and writes the mounted recording medium;
Based on the navigation data read from the recordable recording unit of the recording medium by the recording / reproducing device, the application program read from the read-only recording unit of the recording medium by the recording / reproducing device is executed. A navigation system comprising a control device. The navigation system according to claim 8,
A navigation data acquisition unit for acquiring the navigation data;
The control device, when executing the navigation application program, stores the navigation data acquired by the navigation data acquisition unit into the recordable recording unit of the recording medium by the recording / reproducing device. A navigation system, wherein the recording / reproducing apparatus is controlled to write. The navigation system according to claim 9, wherein
A buffer memory for recording the navigation data acquired by the navigation data acquisition unit;
The navigation system according to claim 1, wherein the control device controls the recording / reproducing device to write the navigation data read from the buffer memory to the recordable recording unit of the recording medium. The navigation system according to claim 9 or 10,
The control device records the recording data so as to update the navigation data recorded in the recordable recording unit of the recording medium with respect to the navigation data to be updated acquired by the navigation data acquisition unit. A navigation system for controlling a playback device. The navigation system according to any one of claims 8 to 11,
The recording / reproducing apparatus reads data from the read-only recording unit or the recordable recording unit of the recording medium and writes data to the recordable recording unit of the recording medium. Navigation system. The navigation system according to any one of claims 8 to 12,
The control device controls the recording / reproducing device to read the operating system program recorded in the read-only recording unit of the recording medium before reading the application program from the read-only recording unit of the recording medium. And executing the read operating system program. The navigation system according to any one of claims 8 to 13,
The control device controls the recording / reproducing device to read and write the map data of the navigation data to the recordable recording unit of the recording medium. . The navigation system according to any one of claims 8 to 14,
The navigation system according to claim 1, wherein the control device controls the recording / reproducing device to read and write content data to and from the recordable recording unit of the recording medium.   A portable terminal comprising the navigation system according to any one of claims 8 to 15. In an optical disc readable by a navigation system,
A boot program for preparing an execution environment for application programs and a navigation program for performing navigation are recorded.
The optical disc, wherein the navigation program is a program that can be executed in an execution environment of an application program arranged by the boot program.

Images