JP2003168259A - In-vehicle information processing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent erroneous reproduction or storage caused by dew condensation in an information storage device 2 which can carry out reproduction/ storage, for example, an in-vehicle information processing equipment provided with a hard disk drive 3, for example, a car navigation system, and to carry out reproduction or storage after the dew condensation or its possibility disappears when there is the dew condensation or its possibility. <P>SOLUTION: The in-vehicle information processing equipment has a detecting means 13 to detect the presence or absence of the possibility of conditions of the dew condensation. When the power source of the car navigation system 1 is turned on and the detecting means 13 brings a detection result satisfying the possibility of conditions of the dew condensation, reproduction and storage operations are prohibited. A portion having the possibility of the dew condensation, for example, a head, is heated by the idle running of a spindle until a detection result not satisfying the possibility of the conditions of the dew condensation is obtained, and the reproduction and storage operations are allowed for the first time when the detection result not satisfying the possibility is obtained. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle information processing device, and more particularly to an in-vehicle information processing device provided with an information storage device capable of reproduction (reading) or reproduction and storage (writing), for example, a hard disk drive, for example, Car navigation device.

[0002]

2. Description of the Related Art Car navigation systems (commonly called "car navigation systems") are often mounted on automobiles, and recently, car navigation systems are becoming standard equipment of automobiles. An information storage medium in which map information is stored is detachably attached to the car navigation device, and the map area information of the position of the vehicle itself and its surrounding area is taken out from the information storage medium and processed to process the map and the vehicle. Is displayed on the liquid crystal display.

Conventionally, a car navigation device has a CD (Compact Disk) or a DVD (Digital Versa) as an information storage medium for storing map information and the like.
tile disk) was used, and therefore a CD drive or DVD drive was provided. But recently
Car navigation devices have appeared to use a writable HD (Hard Disk) as an information storage medium. As a matter of course, such a car navigation device has an HDD (hard disk drive).

[0004]

By the way, compared with a CD drive or a DVD drive, a hard disk drive is apt to be impaired in reading and writing, particularly in writing operation due to dew condensation. Therefore, in a car navigation device equipped with such a hard disk drive, the hard disk drive does not operate normally due to dew condensation due to the temperature conditions of the vehicle in which it is installed or due to changes in the temperature conditions, and malfunctions occur during write and read operations. However, there is a problem that erroneous writing and erroneous reading may occur. However, conventionally, no measures have been taken against such a problem.

The present invention has been made in order to solve such a problem, and in an in-vehicle information processing device equipped with an information storage device capable of reproduction (reading) or reproduction and storage (writing), The purpose is to prevent reproduction or memory from being mistakenly made by dew condensation, and if dew condensation or the possibility of dew condensation is to be performed, the dew condensation or the possibility of dew condensation should be eliminated before reproduction or storage is performed. To do.

[0006]

An on-vehicle information processing device according to claim 1 has a detecting means for detecting the presence or absence of a preset dew condensation possibility condition, and when the on-vehicle information processing device is powered on, When the detection result that the dew condensation possibility condition is satisfied is generated, the reproduction and storage operations are prohibited, and the dew condensation possibility portion does not satisfy the dew condensation possibility condition. Heat until
It is characterized in that the reproducing and storing operations are permitted only when the detection result that the dew condensation possibility condition is not satisfied is obtained.

Therefore, according to the on-vehicle information processing device of the first aspect, when the power-on of the on-vehicle information processing device is turned on, if a detection result that the dew condensation possibility condition is satisfied occurs, reproduction and storage are performed. In addition to prohibiting the operation, heat the potential condensation area until the detection result that the condensation possibility condition is not satisfied is obtained, and only when the detection result that the condensation possibility condition is not satisfied is obtained, Since the memory operation is allowed, it is possible to prevent erroneous reproduction or storage due to dew condensation, and if dew condensation or there is a possibility of that, the reproduction or storage is performed after the dew condensation or its possibility disappears. You can

According to another aspect of the present invention, there is provided an in-vehicle information processing device, comprising: a temperature detecting means for detecting a temperature of a portion of the information storage device where dew condensation is likely to occur;
The temperature change degree is calculated from the temperature difference between the temperature stored by the storage means and the temperature just detected by the temperature detection means, and the time difference between the time when the temperature is detected by the storage means and the present time, and the temperature change degree is calculated. Dew condensation condition determining means for determining whether or not a preset dew condensation possibility temperature condition is satisfied as a condition with possibility of dew condensation, and the determination means determines that the dew condensation possibility temperature condition is satisfied. When a result is output, the playback and storage operations are prohibited, and the condensation-possible part is heated until the detection result that the condensation-possible condition is not satisfied is obtained, and the condensation-possible temperature condition is satisfied. It is characterized in that the reproducing and storing operations are permitted at the beginning when a detection result indicating that there is no such information is obtained.

Therefore, according to the on-vehicle information processing device of the second aspect, when the dew condensation condition determination means outputs the determination result that the dew condensation possibility temperature condition is satisfied, the reproducing and storing operations are prohibited, and The above-mentioned dew condensation possibility part is heated until the detection result that the dew condensation possibility condition is not satisfied is obtained, and the reproduction and storage operations are allowed only when the detection result that the dew condensation possibility temperature condition is not satisfied is obtained. Therefore, it is possible to prevent reproduction or memory from being mistakenly made due to dew condensation, and if there is dew condensation or the possibility of dew condensation, regenerate or store it after eliminating the dew condensation or the possibility of dew condensation. Can be

According to another aspect of the present invention, there is provided an in-vehicle information processing device, wherein a test memory and an error rate detecting means for reproducing the test memory to detect an error rate, and an error rate detected by the error rate detecting means are used as a reference. It has a judgment means for judging whether or not the error rate is exceeded to judge the presence or absence of dew condensation, and when the power supply of the in-vehicle information processing device is turned on, the error rate detection means and the judgment means are operated to exceed the error rate. When a determination result that the error rate does not exceed the reference error rate is determined from the determination means, a portion having a possibility of dew condensation that hinders the normal reproduction or storage operation of the information storage device is generated. It is characterized in that it is heated until it is obtained, and when it falls below the reference error rate, the original reproducing or storing operation is allowed.

Therefore, according to the on-vehicle information processing device of the third aspect, the presence or absence of dew condensation is tested by actually storing the test data and reproducing the stored test data. Since the determination can be made from the error rate based on it, the presence or absence of dew condensation can be determined more accurately.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention basically has a detecting means for detecting the presence / absence of a dew condensation possibility condition set in advance, and when the power source of an in-vehicle information processing device is turned on, the detecting means is provided. If a detection result indicating that the condensation possibility condition is satisfied occurs, the playback and storage operations are prohibited, and the condensation possibility part is heated until the detection result that the condensation possibility condition is not obtained is obtained. However, when the detection result that the dew condensation possibility condition is not satisfied is obtained, the reproduction and storage operations are permitted at first, and one typical example thereof is as follows.

As a condition of the possibility of dew condensation, it is set that a detected temperature is higher than a predetermined temperature lower limit, and there is a possibility that dew condensation may prevent normal read / write operations.
That is, a temperature sensor for detecting the temperature of the dew condensation possible part is provided, and when the temperature detected by the temperature sensor is lower than the predetermined lower temperature limit, the dew condensation possible part is heated. This is a typical example. still,
Condensation is more likely to depend on the degree of temperature drop than on the temperature itself. Therefore, if the degree of temperature drop is detected and it is judged whether it is within a predetermined standard or not, it is possible to form condensation. It is also possible to prohibit reproduction and storage until it is determined that there is no possibility of dew condensation due to the possibility that there is a possibility that there is a possibility.

Further, the presence or absence of dew condensation is stored for a test, the stored data for the test is reproduced, and the reproduction signal and the stored data are compared to detect an error rate.
The determination may be made by comparing the error rate with a predetermined reference error rate. This is because it is possible to more accurately determine the presence or absence of dew condensation.

Heating is effective as means for eliminating the dew condensation when it is determined that dew condensation or the possibility of dew condensation occurs. The heating can be performed by providing a heater and passing an electric current through it. In the case of having a mechanism for rotating the information storage medium like a drive, it can be performed by performing rotation (that is, idling) without reproduction or storage. According to such means, since it is not necessary to provide a heater in the information storage device, the present invention can be implemented without causing a problem such as a specification change of the information storage device.

A hard disk drive can be cited as a typical example of the information storage device provided in the in-vehicle information processing device, but the present invention is not necessarily limited to this, and a normal operation of writing (storing) or reading (reproducing) due to dew condensation. Any information storage device that is disturbed can be used in the present invention.

[0017]

The present invention will be described in detail below with reference to the illustrated embodiments. 1A and 1B show a first embodiment in which the vehicle-mounted information processing device of the present invention is applied to a car navigation device, and FIG. 1A is a circuit block diagram showing a schematic configuration of the car navigation device, (B) is a flowchart showing the operation.

In the figure, reference numeral 1 denotes a car navigation device (vehicle-mounted information processing device), which is composed of a car navigation device body (vehicle-mounted information processing device body) 2 and a hard disk drive 3 which is an information storage device. Reference numeral 4 denotes a control unit of the car navigation device body 2, which includes a CPU (central processing unit), a ROM (read only memory) for storing programs executed by the CPU, and data necessary for the CPU to execute the programs. The car navigation device 1 is entirely controlled by incorporating a RAM (random access memory) for temporary storage and the like.

A GPS receiver 5 receives GPS signals transmitted from GPS satellites to detect the latitude and longitude of the current position of the vehicle. An operation unit 6 is provided with various operation buttons and the like for operating the car navigation device 1. Reference numeral 7 denotes a self-contained navigation sensor, which is provided with an angle sensor such as a gyro that detects a vehicle rotation angle, and a traveling distance sensor that generates a pulse at every constant traveling distance. Self (vehicle itself)
The precise position of is recognized by processing the output of the GPS receiver 5 and the output of the self-contained navigation sensor.

Reference numerals 8 to 10 denote an interface interposed between the GPS receiver 5, the operating section 6, the self-contained navigation sensor 7 and the control section 4, and 11 denotes an interface interposed between the hard disk drive 3 and the control section 4. Interface, 12
Is an interface, 13 is a hard disk drive 3
Is a temperature sensor for detecting the temperature in the vicinity of the head, and the interface 12 is interposed between the temperature sensor 13 and the control unit 4. Reference numeral 14 denotes an image synthesizing circuit that processes the signals output from the control unit 4 to synthesize an image, and 15 receives an output signal from the image synthesizing circuit 14 to display a map, a mark of the vehicle itself, a mark indicating a course to be taken, and the like. Display means for displaying, for example, a liquid crystal display element.

The hard disk drive 3 has the temperature sensor 13 for detecting the temperature of the write / read head as described above. This is a normal write operation,
It is provided to determine whether or not dew condensation occurs by detecting the temperature of the head, which is the part that has the possibility of dew condensation that hinders the read operation.

Next, the operation will be described with reference to FIG. (1) "Power on" When the power switch of the car navigation device 1 is turned on, the flow starts. This power switch is inside the operation unit 6. (2) "Temperature measurement" When the power is turned on, the temperature sensor 13 is caused to perform the temperature detection operation of the head, and the temperature detection result is fetched.

(3) "Above the lower limit?" When the temperature detection result is fetched, it is determined whether or not the temperature detection result is higher than a reference temperature set as a temperature at which condensation may occur. That is, dew condensation generally occurs or is likely to occur when the head temperature drops below a certain temperature. Therefore,
A predetermined temperature is set in advance as a reference temperature (lower limit of allowable temperature), and it is determined whether or not the temperature detected by the temperature sensor 13 is higher than the reference temperature (lower limit).
Specifically, if it is above the lower limit, there is no condensation, and if it is below the lower limit, it is considered to have condensation.

(4) "Spinning" When the judgment result of the above step (3) is No, that is, when the temperature detected by the temperature sensor 13 is below a predetermined reference temperature (lower limit) and it is regarded as dew condensation, the hard disk Drive 3
Let them spin idle. The idle rotation of the hard disk drive 3 means that the hard disk drive 3 has its information storage medium,
That is, the hard disk is rotated without reading / writing. When rotated,
Gradually, heat is generated from the motor for rotation, and the heat is conducted to the head portion through the spindle, and the temperature of the head rises. When idling is started, the process returns to step (2) "temperature measurement".

(5) "Read / Write" If the result of the determination in step (3) is Yes,
Permits read / write operations of the hard disk drive 3. (6) "Normal startup" Then, the hard disk drive 3 is normally started.
This completes this flow.

According to the car navigation system 1 as described above, when the power is turned on, whether or not the temperature detected by the temperature sensor 13 exceeds the reference temperature set as the lower limit of the temperature range in which there is no possibility of dew condensation. If the result of the determination is that the value exceeds the limit, normal activation of reading and writing is permitted. However, when it does not exceed the limit, it is idled and read / write is not permitted. That is, the read / write operation is prohibited. Therefore, it is possible to avoid the risk of erroneous reading or writing by allowing reading / writing in a state where normal reading / writing cannot be performed due to dew condensation.

Then, when the head is idled, the temperature of the head gradually rises. Then, the reference temperature is eventually exceeded and the dew condensation state of the head disappears. In this way, when the head temperature exceeds the reference temperature (lower limit), the determination result of the step (3) becomes Yes, and the read (reproduction) and storage (write) operations, that is, the normal start-up is permitted. In other words, when there is dew condensation, the dew condensation can be eliminated, and the normal activation that allows read / write only after the elimination of the dew condensation can be performed.

2A and 2B show a second embodiment in which the on-vehicle information processing device of the present invention is applied to a car navigation device, and FIG. 2A is a circuit showing a schematic configuration of the car navigation device. A block diagram, (B) is a flowchart showing the operation. The car navigation device 1a shown in FIG. 2A differs from the car navigation device 1 shown in FIG.
The only difference is that the engine sensor 16 and the interface 17 for the engine sensor interposed between the control unit 4 are provided, and the other points are common, and the common points have already been described, and therefore detailed description thereof will be given. Description will be omitted, and only different points will be described in detail.

The engine sensor 16 detects whether or not an engine (not shown) of the vehicle is operating based on the presence or absence of voice or vibration. It should be noted that it may be possible to detect whether or not the engine is operating from the power supply voltage output from the storage battery included in the vehicle, depending on whether or not the noise generated by the operation of the engine can be detected. This engine sensor 16 prevents the engine from running down the flow by forcibly ending this flow when the engine is not operating and preventing the so-called "battery going up". It detects whether or not it is operating.

The interface 17 processes the output of the engine sensor 16 and sends it to the controller 4.

Next, the operation of the car navigation system 1a shown in FIG. 2A will be described with reference to FIG. 2B. (11) “Power on” When the power switch of the car navigation device 1 is turned on, the flow starts. (12) "Engine operation?" A signal indicating whether or not the engine is operating is fetched from the engine sensor 16 and it is determined whether or not the engine is operating. When the determination result is No, this flow ends. As a result, when the engine is not operating, this flow is forcibly terminated to prevent the remaining amount of the storage battery from decreasing, so-called "battery goes up".
To prevent this.

(13) "Temperature Measurement" When the power is turned on, the temperature sensor 13 is caused to detect the temperature of the head, and the temperature detection result is fetched. (14) "Temperature storage" The temperature detected by the temperature sensor 13 is stored together with the detection time.

(15) "Calculation of degree of temperature change" Detected temperature (current temperature) when the power is turned on this time and its detection time (current detection time), and temperature detected by the temperature sensor 13 before the power is turned on. The temperature change degree (temperature change amount per unit time) is calculated from the stored temperature (previous temperature) and its detection time (previous detection time). Specifically, the calculation formula of temperature variation = (current temperature-current temperature) / (current detection time-previous detection temperature) is performed.

(16) "Above the lower limit?" Condensation also occurs when the degree of temperature decrease exceeds a certain limit. Therefore, the degree of temperature change is calculated and the value becomes negative (it becomes negative when the temperature decreases. In the case of an increase, the value becomes positive.) And the greater the change in the absolute value per unit time, the more easily dew condensation occurs.
Therefore, in the present embodiment, the reference value of the temperature change degree, which is the watershed for determining whether or not dew condensation is formed, is set as a lower limit in advance, and if it exceeds that value, it is considered that there is no condensation, and if it is less than that, it is considered that there is condensation. And

(17) "idling" When the judgment result of the step (16) is No, that is,
When the degree of temperature change is equal to or lower than a predetermined reference value (lower limit) and it is considered that there is condensation, the hard disk drive 3 is idled. The idle rotation of the hard disk drive 3 means, as described above, the operation of causing the hard disk drive 3 to rotate its information storage medium, that is, the hard disk without reading / writing. When rotated, heat is gradually generated from the motor for rotation, and the heat is conducted to the head portion through the spindle and the temperature of the head rises. When you start idle rotation, step (1
3) Return to "Temperature measurement".

(18) "Read / Write" When the result of the determination in step (16) is Yes, the read / write operation of the hard disk drive 3 is permitted. (19) "Normal startup" Then, the hard disk drive 3 is normally started.
This completes this flow.

According to such a car navigation system 1a, when the power is turned on, the engine sensor 16 detects whether or not the engine is operating, and when the engine is not operating, the flow is ended. To do.
Therefore, when the engine is not operating, it is possible to prevent the hard disk drive 3 from being consumed by the operation such as idling to reduce the remaining amount of the storage battery, which in turn prevents the so-called “battery going up”. is there.

Then, when the engine is operating, it is judged whether or not the temperature change degree exceeds the reference value set as the lower limit of the range where there is no possibility of dew condensation, and a judgment result that the temperature change degree is exceeded is generated. In case, read (play)
Also, the memory (write) operation and the normal start-up are permitted, and if not exceeded, the idle operation is performed and the read / write operation is prohibited. Therefore, it is possible to avoid the risk of erroneous reading or writing by allowing reading / writing while normal reading / writing cannot be performed due to dew condensation.

Then, when the head is idled, the temperature of the head gradually rises. Then, the degree of temperature change eventually falls within the allowable range, and the dew condensation state of the head disappears. As described above, when the degree of change in the head temperature exceeds the reference value (lower limit), the determination result of step (16) becomes Yes, and the read (reproduction) and storage (write) operations, that is, the normal startup is permitted. . In other words, when there is dew condensation, the dew condensation can be eliminated, and the normal activation that allows read / write only after the elimination of the dew condensation can be performed.

FIG. 3 is a flow chart for explaining the operation of the third embodiment in which the in-vehicle information processing device of the present invention is applied to a car navigation system. The present embodiment has the same circuit configuration as that of the second embodiment shown in FIG. 2, and therefore the illustration of the circuit configuration is omitted. In the present embodiment, a test write is performed to determine whether or not there is dew condensation, and a test read is performed to read the written contents, and the written contents and the read contents are compared to detect an error rate.
The judgment is made as to whether or not there is condensation depending on whether or not it exceeds the allowable limit. In this embodiment, since it is not necessary to detect the head temperature, a hard disk drive without the temperature sensor 13 may be used.

The operation will be described below with reference to FIG. (21) “Power on” When the power switch of the car navigation device 1 is turned on, the flow starts. (22) "Engine operation?" The engine sensor 16 receives a detection signal of voice or vibration (or noise on the power supply voltage output from the storage battery of the vehicle) generated when the engine is operating, and the engine operates. Is determined. That is,
Whether or not the engine is operating is determined by whether or not the level of the detection signal exceeds a predetermined reference level. When the determination result is No, this flow ends. As a result, when the engine is not operating, this flow is forcibly terminated to prevent the remaining amount of the storage battery from decreasing, and so-called “battery exhaustion” can be prevented.

(23) "Write for test" If the result of the determination in step (22) is Yes, write for test is performed. That is, the test data prepared in advance is written in the hard disk of the hard disk drive 3. (24) “Read for test” The test data written in step (23) is read.

(25) "Error Rate Detection" Prepared as test write data, step (23)
The error rate is detected by comparing the data written in step 3 and the data read in step (24). (26) "Higher than lower limit?" It is detected whether the error rate detected in step (24) is higher than the reference error rate as the lower limit of the preset allowable range.

(27) "idling" When the judgment result of the step (26) is No, that is,
When the error rate is equal to or lower than the predetermined reference value (lower limit) and it is considered that there is condensation, the hard disk drive 3 is idled. When the hard disk drive 3 is idled, heat is gradually generated from the rotating motor, and the heat is conducted to the head portion through the spindle, and the temperature of the head rises. When idling starts, step (13)
Return to "writing for test".

(28) "Read / Write" When the result of the determination in step (26) is Yes, the original read / write operation of the hard disk drive 3 is permitted. (29) "Normal startup" Then, the hard disk drive 3 is normally started.
This completes this flow.

According to such a car navigation system, the presence or absence of dew condensation can be actually stored, a test for reproducing the stored person can be performed, and the judgment can be made from the error rate based on the test result. The presence or absence of can be determined more accurately.

[0047]

According to the in-vehicle information processing device of claim 1,
When the power of the in-vehicle information processing device is turned on, if a detection result that the dew condensation possibility condition is satisfied occurs, the reproduction and storage operations are prohibited, and the dew condensation possibility part is
It is heated until the detection result that the dew condensation possibility condition is not obtained is obtained, and the reproduction and storage operations are allowed only when the detection result that the dew condensation possibility condition is not obtained is obtained. It is possible to prevent the occurrence of dew condensation or if there is a possibility of dew condensation, and then to reproduce or store the dew condensation or if there is no possibility of dew condensation.

According to the on-vehicle information processing device of the second aspect, when the dew condensation condition judging means outputs the judgment result that the dew condensation possibility temperature condition is satisfied, the reproducing and storing operations are prohibited and the dew condensation is made. The potential part is heated until the detection result that the possibility of dew condensation is not satisfied is obtained, and the reproduction and the storage operation are permitted only when the result that the possibility of dew condensation temperature condition is not obtained is obtained. Therefore, it is possible to prevent reproduction or memory from being mistakenly made due to dew condensation, and if dew condensation or there is a possibility of dew condensation, replay or memory is performed after the dew condensation or its possibility disappears. be able to.

According to the on-vehicle information processing apparatus of claim 3, the presence or absence of dew condensation can be actually stored, a test for reproducing the stored person can be performed, and the determination can be made from the error rate based on the test result. The presence or absence of dew condensation can be determined more accurately.

According to the on-vehicle information processing device of the fourth aspect, since the portion having a possibility of dew condensation is heated by idling the rotation mechanism of the information storage device, dew condensation is eliminated without providing a heater for heating. You can

According to the on-vehicle information processing device of the fifth aspect, since the head, which is a part where dew condensation may occur, is heated by idling the spindle of the hard disk drive forming the information storage device, a heater for heating is provided. No condensation can be eliminated.

According to the on-vehicle information processing device of claim 6, an engine sensor for detecting whether or not the engine is operating is provided, and the dew condensation possibility condition or dew condensation is possible only when the engine is operating from the engine sensor. Temperature conditions are met or the detection error rate exceeds the reference error rate, and the operation of heating the part that may cause dew condensation is allowed according to the detection result. When is not operating, this flow can be forcibly ended to prevent the remaining amount of the storage battery from decreasing, and so-called “battery going up” can be prevented.

[Brief description of drawings]

1A and 1B show a first embodiment in which an in-vehicle information processing device of the present invention is applied to a car navigation device, and FIG. 1A is a circuit block showing a schematic configuration of the car navigation device. FIG. 1B is a flowchart showing the operation.

2A and 2B show a second embodiment in which the in-vehicle information processing device of the invention is applied to a car navigation device, and FIG. 2A is a circuit block diagram showing a schematic configuration of the car navigation device. FIG. 1B is a flowchart showing the operation.

FIG. 3 is a flowchart for explaining the operation of the third embodiment in which the vehicle-mounted information processing device of the present invention is applied to a car navigation device.

[Explanation of symbols]

1, 1a ... In-vehicle information processing device (car navigation device), 2 ... In-vehicle information processing device body (car navigation device body), 3 ... Information storage device (hard disk drive), 4 ... Calculation Judgment means, 13 ...
Detecting means (temperature sensor), 16 ... Engine sensor.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 20/18 G11B 20/18 572F (72) Inventor Hideyuki Uemura 6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo No. Sony Corporation

Claims (6)

[Claims] 1. An in-vehicle information processing device equipped with an information storage device capable of reproduction or reproduction and storage, wherein the information storage device has a possibility of dew condensation that prevents normal reproduction or storage operation. It has a detecting means for detecting the presence or absence of the set dew condensation possibility condition, and when the on-vehicle information processing equipment itself is powered on, the detecting means detects whether or not the dew condensation possibility condition is satisfied, and When the detection result that the possibility condition is satisfied occurs, the reproduction and the storage operation are prohibited, and the above-mentioned dew condensation possibility part is heated until the detection result that the dew condensation possibility condition is not obtained is obtained, An in-vehicle information processing device, wherein reproduction and storage operations are allowed only when a detection result that the dew condensation possibility condition is not satisfied is obtained. 2. An in-vehicle information processing device equipped with an information storage device capable of reproduction or reproduction and storage, and temperature detection means for detecting a temperature of a portion of the information storage device where condensation may occur. Storage means for storing the temperature detected by the temperature detection means, a temperature difference between the temperature stored by the storage means and the temperature just detected by the temperature detection means, and the temperature detected by the storage means. Dew condensation condition determining means for calculating the temperature change degree from the time difference from the present time and determining whether or not the temperature change degree satisfies a preset dew condensation possibility temperature condition as a condition that may cause dew condensation. However, when the dew condensation condition judging means outputs a judgment result that the dew condensation possibility temperature condition is satisfied, the reproduction and storage operations are prohibited, and the dew condensation possibility part is condensed. The heating is performed until the detection result that the possibility condition is not satisfied is obtained, and the reproduction and storage operations are allowed only when the detection result that the possibility condensation temperature condition is not obtained is obtained. In-vehicle information processing equipment. 3. An in-vehicle information processing device having an information storage device capable of reproducing and storing, a test memory, an error rate detecting means for reproducing the test memory to detect an error rate, and the error rate. The in-vehicle information processing device itself has a power-on state, which comprises a determining means for determining whether or not dew condensation is present by determining whether or not the error rate detected by the detecting means exceeds a preset reference error rate. When
When the error rate detecting means is operated, and further, the determining means determines whether or not the error rate detected by the detecting means exceeds the reference error rate. When the judgment result that the original reproduction or storage operation is allowed and exceeded is generated, the judgment means determines the error rate from the judgment means for the part that may cause dew condensation that prevents the normal reproduction or storage operation of the information storage device. The in-vehicle information processing device, characterized in that heating is performed until a determination result that the temperature does not exceed the reference error rate is obtained. 4. The information storage device has a mechanism for rotating the information storage medium, and heating of a portion having a possibility of dew condensation is performed by rotating the information storage medium without reproducing and storing. The in-vehicle information processing device according to claim 1, 2 or 3, wherein 5. The information storage device is a hard disk drive, and heating of a head, which is a part that may cause dew condensation, is performed by idle rotation of a spindle that rotates a hard disk, which is an information storage medium. The in-vehicle information processing device according to claim 1, 2, 3, or 4. 6. A dew condensation possibility condition or a dew condensation possibility only when an engine sensor for detecting whether the engine is operating is provided and a signal indicating that the engine is operating is output from the engine sensor. It is characterized in that it detects whether the temperature condition is satisfied or the detection error rate exceeds the reference error rate, and further permits the operation of heating the condensation-possible part according to the detection result. And claim 1,
The in-vehicle information processing device described in 2, 3, 4 or 5.