JP2004118474A - Equipment control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten the time up to the sure operation start of equipment in initialization processing. <P>SOLUTION: This equipment control system has a sub-central processing unit connected to first equipment to control the first equipment, a main central processing unit connected to second equipment longer than the first equipment in initialization processing time to control the second equipment. When an operation instruction is inputted from an operation part to the main control processing unit through the sub-control processing unit, the content of the operation instruction to the main central processing unit is temporarily stored in a storage means connected to the sub-central processing unit until the initialization processing of the main central processing unit is ended, and the transmission of content of the operation instruction to the main central processing unit is prohibited, whereby the time up to the operation start of equipment in initialization processing is shortened. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device control system.
[0002]
[Prior art]
[Patent Document 1] JP-A-2001-336943 As a conventional technique, a technique disclosed in JP-A-2001-336943 is known.
[0003]
The above prior art discloses a technology in which one central processing unit (hereinafter, referred to as a CPU) controls a plurality of in-vehicle devices such as a navigation device and an audio device based on input contents from an operation unit and a microphone. I have.
[0004]
[Problems to be solved by the invention]
However, in the related art, since a plurality of devices are controlled by one CPU, when a command is issued from the operation unit to a navigation device having a long initialization processing time during the initialization process, the navigation device is not controlled. In addition to its own initialization processing time, the time required to respond to the operation command to the navigation device is added, so there is a concern that the initialization processing will take more time and the time until the start of operation of the equipment will be delayed. You.
[0005]
The present invention has been made in view of the above circumstances, and has as its object to shorten the time until the start of operation of a device in initialization processing.
[0006]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a main processing unit that controls a second device via a sub central processing device that controls a first device. The above object is achieved by prohibiting the sub central processing unit from transmitting an operation command to the main central processing unit until the initialization processing of the central processing unit is completed.
[0007]
【The invention's effect】
According to the present invention, when an operation command is issued from the operation unit to the main central processing unit via the sub-central processing unit, the sub-central processing unit remains in the main central processing unit until the initialization processing of the main central processing unit ends. Since the transmission of operation commands to the processing device has been prohibited, the time until the operation of the device in the initialization process is started without adding time to deal with the operation command to the device. Can be.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a case in which an embodiment of the present invention is applied to a vehicle will be described in detail with reference to FIGS.
[0009]
FIG. 1 is a diagram showing a configuration in which the device control system of the present invention is applied to a vehicle.
[0010]
A sub central processing unit (hereinafter, referred to as a sub CPU) 1 includes a radio 2, a CD player 3, an MD player 4, a switch 5, a small display 6, a memory 7, a main central processing unit (hereinafter, main CPU). 8) to control the above-mentioned devices. The sub CPU 1 performs bidirectional communication with the main CPU 8. The initialization processing time of the main CPU 8 performed when the power is turned on requires a longer time than the initialization processing time of the sub CPU 1.
[0011]
The radio 2 reproduces the sound of the broadcasting station selected by the switch 5 through a speaker (not shown), and displays text information on the small display 6. The CD player 3 reproduces a CD inserted into an insertion slot (not shown). Similarly, the MD player 4 reproduces the MD inserted in the insertion slot (not shown).
[0012]
The switch 5 is a switch to which an operation command for operating a device connected to the sub CPU 1 and a device connected to the main CPU 8 described later is input. The switch 5 will be described with reference to FIG. 2. The switch 5 includes a switch 13 for inputting an operation command for reproducing a radio, a switch 14 for inputting an operation command for reproducing a CD, and a switch 14 for inputting an operation command for reproducing a CD. A switch 15 for inputting an operation command, a switch 16 for inputting an operation command for operating a navigation function, a switch 17 for inputting an operation command for reproducing MP3, a switch 18 for adjusting a volume, and a CD or MD It comprises switches 19 and 20 for changing the program number and the like.
[0013]
Referring to FIG. 1 again, the small display 6 displays the program number and the reproduction time of the CD or MD to be reproduced by the CD player or the MD player, and switches from the switch 5 when the initialization processing of the main CPU 8 is not completed. When an operation command is input to the navigation function or the MP3 decoder 10, guidance information "Please wait" is displayed. Details will be described later.
[0014]
The memory 7 stores information. For example, when an operation command for operating the navigation function is input from the switch 5, the content of the operation command is temporarily stored.
[0015]
The main CPU 8 is connected to the GPS receiver 9, the MP3 decoder 10, the hard disk 11, the CD-ROM drive 12, the video driver 13, and the memory 14, and controls the above devices. Further, the main CPU 8 issues a drawing instruction to the video driver 13.
[0016]
The GPS receiver 9 recognizes the position of the own vehicle based on the GPS signal.
[0017]
The MP3 decoder 10 decodes a compressed and encoded MP3 file.
[0018]
The hard disk 11 stores applications and data for implementing a navigation function.
[0019]
The CD-ROM drive 12 stores information such as map data.
[0020]
The video driver 13 is connected to the large display 15 and displays an image (for example, a map image) corresponding to the drawing command on the large display 15 based on the drawing command given from the main CPU 8.
[0021]
The memory 14 stores information. For example, an application for realizing a navigation function is extracted from the hard disk 11 and stored.
[0022]
FIG. 2 is a diagram showing the appearance of the device control system of the present embodiment, in which the above-described switch 5, small display 6, and large display 15 are shown in a superficial manner. Here, the normal operation of the device control system will be described with reference to FIGS. For example, when playing a CD, when the switch 14 is pressed by the user of the vehicle, an operation command for playing the CD is sent from the switch 14 to the sub CPU 1, and the sub CPU 1 controls the CD player 3. , The music number and the reproduction time of the CD are displayed on the small display 6. When adjusting the volume, turning the switch 18 clockwise increases the volume, and turning the switch 18 counterclockwise decreases the volume. To change the music being played, the next music is played by pressing the switch 19, and the previous music is played by pressing the switch 20. On the other hand, when the switch 16 is pressed by the user, an operation command for operating the navigation function is transmitted from the switch 16 to the main CPU 8 via the sub CPU 1, and the main CPU 8 transmits an application for realizing the navigation function from the hard disk 11. Is stored in the memory 14 and executed, for example, the vehicle position recognized by the GPS receiver 9 and the map data stored in the CD-ROM drive 12 are read out and read to the large display 15 via the video driver 13. Perform map display.
[0023]
Next, FIGS. 3 to 6 are flowcharts for explaining the processing of the control program performed in the above-described device control system. FIGS. 3 and 4 show the processing of the sub CPU 1, and FIGS. The processing is shown.
[0024]
First, the process of the sub CPU 1 will be described with reference to FIGS. 3 and 4. If it is detected in step S100 (FIG. 3) that the ignition switch is turned on by the user of the vehicle, the process proceeds to step S200. If it is not detected that the ignition switch has been turned on, the process of step S100 is repeated until the ignition switch is detected. The power to the sub CPU 1 is turned on by turning on the ignition switch.
[0025]
Next, in step S200, after power is turned on, the sub CPU 1 starts initialization processing to return the internal state to the initial state, and proceeds to step S220.
[0026]
Next, in step S220, it is determined whether or not the end notification of the initialization process has been transmitted from the main CPU 8, and if it is determined that the end notification of the initialization process of the main CPU 8 has been transmitted, the process proceeds to step S270, and the initialization is performed. If it is determined that the processing end notification has not been transmitted, the process proceeds to step S230.
[0027]
Next, in step S230, it is determined whether an operation command has been input from the switch 5. If an input has been made, the process proceeds to step S240; otherwise, the process returns to step S220.
[0028]
Next, in step S240, it is determined whether or not the operation command input in step S230 is an operation command for a device connected to the main CPU 8, that is, an operation command for the navigation function or the MP3 decoder 10. If it is an operation command for the navigation function or the MP3 decoder 10, the process proceeds to step S250, and the device (radio 2, CD player 3, MD player) connected to the sub CPU 1 is not an operation command for the navigation function or the MP3 decoder 10. If there is an operation command for 4), the process proceeds to step S260.
[0029]
Next, in step S250, transmission of an operation command to the navigation function or the MP3 decoder 10 to the main CPU 8 is prohibited, and the contents of the operation command are stored in the memory 7 and a message "Please wait" is displayed on a small display. 6 is displayed.
[0030]
Next, in step S260, when there is an operation command for the device connected to the sub CPU 1 in step S240, the reproduction control of the radio 2, the CD player 3, and the MD player 4 is performed in accordance with the operation command, and step S220 is performed. Proceed to.
[0031]
Next, in step S270, it is determined whether or not the memory 7 stores the content of the operation command to the main CPU 8, and if it is stored, the process proceeds to step S280. If not, the process proceeds to step S300 (FIG. 4). And proceed.
[0032]
Next, in step S280, the contents of the operation command to the main CPU 8 stored in the memory 7 are transmitted to the main CPU 8, and the process proceeds to step S300 (FIG. 4).
[0033]
Next, an abnormality diagnosis process of the main CPU 8 is performed in steps S300 to S330. This means that if the initialization processing of the main CPU 8 is completed and the main CPU 8 is not operating normally, the navigation function will not operate and a map or the like will not be displayed on the large display 15. Therefore, the sub CPU 1 determines whether the main CPU 8 is in an abnormal state. First, in step S300, a simple calculation formula is transmitted to the main CPU 8, and the process proceeds to step S310. At this time, the answer to the calculation formula transmitted to the main CPU 8 is stored in the memory 7 in advance. The calculation formula may be a simple formula such as 5 + 5 = 10.
[0034]
Next, in step S310, it is determined whether a response to the calculation formula transmitted within the specified time has been transmitted from the main CPU 8. If there is an answer within the specified time, the process proceeds to step S320, and if there is no answer within the specified time, the process proceeds to step S330.
[0035]
Next, in step S320, the answer of the calculation formula returned from the main CPU 8 in step S310 and the answer to the calculation formula stored in advance by the sub CPU 1 are compared. If the two answers match, the operation of the main CPU 8 is determined to be normal and the process proceeds to step S340. On the other hand, if they do not match, the main CPU 8 determines that the state is abnormal and proceeds to step S330.
[0036]
Next, in step S330, a command to input a reset signal to a reset terminal (not shown) of the main CPU 8 is transmitted to the main CPU 8, and the process returns to step S220 (FIG. 3).
[0037]
On the other hand, in step S340, it is determined whether or not an operation command has been input from the switch 5, and if the operation command has been input, the process proceeds to step S350. If the operation command has not been input from the switch 5, the process proceeds to step S350. The process of step S340 is repeated until an operation command is input.
[0038]
Next, in step S350, it is determined whether or not the operation command input in step S440 is an operation command to the main CPU 8, that is, an operation command to the navigation function or the MP3 decoder 10. If so, the process proceeds to step S360; otherwise, if it is an operation command for the radio 2, the CD player 3, and the MD player 4, the process proceeds to step S370.
[0039]
Next, in step S360, the operation command input in step S340 is transmitted to main CPU8.
[0040]
Next, in step S370, reproduction control of the radio 2, the CD player 3, and the MD player 4 is performed in accordance with the operation command input in step S340.
[0041]
Next, in step S380, it is determined whether or not the ignition switch is off. If the ignition switch is off, the process ends. If not, the process returns to step S340.
[0042]
Next, a control program executed by the main CPU 8 will be described with reference to FIGS.
[0043]
If it is detected in step S400 that the ignition switch has been turned on by the user of the vehicle, the process proceeds to step S410. If it is not detected that the ignition switch has been turned on, the process of step S400 is repeated until the ignition switch is detected. The power is turned on to the main CPU 8 by turning on the ignition switch.
[0044]
Next, in step S410, after the power is turned on, the main CPU 8 starts initialization processing to return the internal state to the initial state, and proceeds to step S420.
[0045]
Next, in step S420, the sub CPU 1 is notified that the initialization processing of the main CPU 8 has been completed and devices connected to the main CPU 8 can be controlled, and the flow advances to step S430.
[0046]
Next, in step S430, it is determined whether the content of the operation command stored in the memory 7 of the sub CPU 1 has been transmitted, and it is determined that the content of the operation command stored in the memory 7 of the sub CPU 1 has been transmitted. In step S440, if it is determined that the content of the operation command has not been transmitted, the process of step S430 is repeated until it is determined that the content of the operation command has been transmitted.
[0047]
Next, in step S440, the navigation function and the MP3 decoder 10 are controlled based on the contents of the operation command transmitted in step S430.
[0048]
Next, abnormality diagnosis processing is performed in steps S460 to S490.
[0049]
First, in step S460, it is determined whether a calculation formula has been transmitted from the sub CPU1, and if it is determined that the calculation formula has been transmitted, the process proceeds to step S470. If it is determined that the calculation formula has not been transmitted, the calculation is performed. The process of step S460 is repeated until the formula is transmitted.
[0050]
Next, in step S470, a response to the calculation formula transmitted from sub CPU1 is calculated, and the flow advances to step S480.
[0051]
Next, in step S480, the answer calculated in step S470 is transmitted to sub CPU1, and the process proceeds to step S490.
[0052]
Next, in step S490, it is determined whether or not a command to input a reset signal has been transmitted from sub CPU1, and if it is determined that a command to input a reset signal has been transmitted, the process returns to step S410 (FIG. 5), and If it is determined that has not been transmitted, the process proceeds to step S500.
[0053]
On the other hand, in step S500, it is determined whether an operation command has been transmitted from the sub CPU 1 based on the operation command of the switch 5 (step S360 in FIG. 4), and if it is determined that the operation command has been transmitted, the process proceeds to step S510. If it is determined that it has not been transmitted, the process of step S500 is repeated.
[0054]
Next, in step S510, the navigation function and the MP3 decoder 10 are controlled based on the contents of the operation command transmitted in step S500.
[0055]
Next, in step S520, it is determined whether or not the ignition switch is off. If the ignition switch is off, the process ends. If not, the process returns to step S500.
[0056]
As described above, in the present embodiment, when an operation command is input from the switch 5 to the main CPU 8, the sub CPU 1 sends the operation command to the main CPU 8 until the initialization processing of the main CPU 8 ends. Since the transmission of the contents is prohibited, there is an effect that the time until the reliable operation start of the device in the initialization can be shortened without adding the time for responding to the command input of the device.
[0057]
When an operation command is issued from the switch 5 to the main CPU 8, the user not only waits for the operation of the device to start, but also waits until the initialization processing of the main CPU 8 is completed. Since the information is displayed on the display 6, there is an effect that the user does not feel discomfort.
[0058]
Further, the contents of the operation command input from the switch 5 are stored in the memory 7 until the initialization processing of the main CPU 8 is completed, and when the completion of the initialization processing of the main CPU 8 is notified to the sub CPU 1, Since the contents of the operation command stored in 7 are transmitted to the main CPU 8, there is no need to input the operation command once input again, which has the effect of improving convenience.
[0059]
Further, the sub CPU 1 determines whether the main CPU 8 is in an abnormal state, and when the main CPU 8 is in an abnormal state, causes the main CPU 8 to execute an initialization process, so that the user is uncomfortable. It has the effect of not having to.
[0060]
In the above-described embodiment, the case where the present invention is applied to a vehicle has been described. However, similar effects can be obtained by applying the present invention not only to a vehicle but also to an IP phone, a hard disk recorder, and a home game machine.
[0061]
The correspondence between the components of the claims and the embodiments is as follows.
[0062]
That is, the sub CPU 1 stores the sub central processing unit, the prohibiting unit and the transmitting unit, the main CPU 8 stores the main central processing unit and the notification unit, the switches 5 and the switches 13 to 20 store the operation unit, and the memory 7 stores the same. The small display 6 constitutes a first screen display unit, and the large display 15 constitutes a second screen display unit.
[0063]
Each component is not limited to the above configuration as long as the characteristic functions of the present invention are not impaired.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a device control system according to an embodiment.
FIG. 2 is an external view of a device system according to the embodiment.
FIG. 3 is a flowchart illustrating processing of a control program performed by a sub CPU according to the embodiment.
FIG. 4 is a flowchart illustrating processing of a control program performed by a sub CPU according to the embodiment.
FIG. 5 is a flowchart illustrating processing of a control program performed by a main CPU according to the embodiment.
FIG. 6 is a flowchart illustrating processing of a control program performed by a main CPU according to the embodiment.
[Explanation of symbols]
1 ... Sub CPU
2 Radio 3 CD player 4 MD player 5 Switch 6 Small display 7 Memory 8 Main CPU
9 GPS receiver 10 MP3 decoder 11 Hard disk 12 CD-ROM
13 Video driver 14 Memory 15 Large display

Claims (9)

With multiple devices,
A secondary central processing unit connected to a first device and controlling the first device, among the plurality of devices;
A main central processing unit connected to the secondary central processing unit, connected to a second device having a longer initialization processing time than the first device, and controlling the second device;
An operation unit that is connected to the sub central processing unit and receives an operation command for the first and second devices;
The sub central processing device controls the first device when an operation command for a first device is input by the operation unit, and an operation command for a second device is input by the operation unit. A control unit for prohibiting transmission of an operation command for the second device to the main central processing unit until the initialization process of the main central processing unit is completed. . The device control system according to claim 1,
The apparatus control system, wherein the sub central processing unit is connected to a storage unit that temporarily stores an operation command content for the second device until the initialization processing of the main central processing unit is completed. The device control system according to claim 1,
The device control system, wherein the sub central processing unit is connected to a first screen display unit that displays an operation command content for the second device. 4. The device control system according to claim 1, wherein the main central processing unit includes a notifying unit that notifies the secondary central processing unit of the end of the initialization process. system. The device control system according to claim 4,
The secondary central processing unit, when notified of the end of the initialization process from the notifying unit, includes a transmitting unit that transmits the operation command content stored in the storage unit to the main central processing unit. Characteristic device control system. The device control system according to any one of claims 1 to 5,
The apparatus control system, wherein the main central processing unit is connected to a second screen display unit that is larger than the first screen display unit. The device control system according to any one of claims 1 to 6,
The device control system according to claim 1, wherein the first device is at least one device of a radio, a CD player, and an MD player. The device control system according to any one of claims 1 to 7,
The device control system, wherein the second device is at least one of a GPS receiver, an MP3 decoder, and a CD-ROM drive. The device control system according to any one of claims 1 to 8,
The secondary central processing unit determines whether the main central processing unit is in an abnormal state, and when it is determined to be in an abnormal state, causes the main central processing unit to execute an initialization process. Control system.

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