JP2010152131A - Projector device and control method for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector device and its control method for preventing the occurrence of error in control information due to an out-of-control state of software in a main control processor. <P>SOLUTION: This projector device includes a projection part 20 for projecting light from a light source corresponding to image, an EEPROM 13 for holding the control information, user interfaces 11, 12 for performing various operation, a main CPU 14 for controlling the projection part 20 based on the control information after start, and a sub-CPU 15 for controlling start or stop of the main CPU 14 and monitoring operation of the main CPU 14 in accordance with the operation of the user interfaces 11, 12. The sub-CPU 15 detects the out-of-control state of the software in the main CPU 14, reflects change of the control information generated in the operation of the main CPU 14 up to the detection time on the control information held in the EEPROM 13, and restarts the main CPU 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a projector device that stops a main control processor by a sub-control processor in order to suppress power consumption in a standby state, and a control method thereof.

  A general projector device projects an image on an external screen using white light from a high-pressure mercury lamp. In recent years, power LEDs capable of achieving both high brightness and long life have been mass-produced one after another from a plurality of manufacturers. In addition, such power LEDs (hereinafter referred to as LEDs) are being adopted as light sources for projector devices because they can efficiently convert power into light.

In a projector device, it is required to reduce power consumption in a standby state where no image is projected. As a measure for realizing this, conventionally, a technique has been proposed in which a sub CPU (sub control processor) with low power consumption in a standby state is used to assist a main CPU (main control processor) that controls image projection. (For example, see Patent Document 1).
JP 2007-219165 A

In the projector device disclosed in Patent Document 1, when an abnormality of the main CPU occurs such that the projection lamp is not lit, an abnormal standby state in which both the main CPU and the sub CPU operate is set. In this case, the sub CPU resets the main CPU to return to the normal state.
However, the projector device holds control information such as cumulative lighting time data of the light source and various setting data in a nonvolatile memory such as an EEPROM, for example, and controls when the main CPU enters a standby state by a power-off operation. Information may be rewritten to the latest contents. In the technique of Patent Document 1, if the software runs away while the main CPU is operating, the main CPU is reset without rewriting control information. For this reason, an error in the control information occurs.

  It is an object of the present invention to provide a projector apparatus and a control method therefor in which an error in control information does not occur due to software runaway of a main control processor.

  According to the first aspect of the present invention, a projection unit that projects light from a light source corresponding to an image, a nonvolatile memory that holds control information, a user interface that performs various operations, and control information after activation A main control processor for controlling the projection unit, and a sub-control processor for starting or stopping the main control processor according to the operation of the user interface and monitoring the operation of the main control processor. It is configured to detect a software runaway, reflect the change in the control information that has occurred in the operation of the main control processor up to this detection time in the control information held in the nonvolatile memory, and restart the main control processor A projector device is provided.

  According to the second aspect of the present invention, a projection unit that projects light from a light source corresponding to an image, a non-volatile memory that retains control information, a user interface that performs various operations, and control information after activation A control method of a projector apparatus comprising: a main control processor that controls a projection unit; and a sub-control processor that performs control of starting or stopping the main control processor according to an operation of a user interface and monitoring operation of the main control processor, The software runaway of the main control processor is detected by the sub control processor, and the control information change caused in the operation of the main control processor by the sub control processor up to this detection time is reflected in the control information held in the nonvolatile memory, A control method is provided for restarting the main control processor.

  In these projector apparatuses and control methods therefor, the sub-control processor detects software runaway of the main control processor, and control information that is retained in the nonvolatile memory in the control information change that has occurred in the operation of the main control processor up to this detection point And the main control processor is restarted. Therefore, a watchdog timer for detecting software runaway of the main control processor is not required, and the control information held in the nonvolatile memory is reliably updated. Therefore, the control information error does not occur due to the software runaway of the main control processor.

  Hereinafter, a projector device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a schematic circuit configuration of the projector apparatus. The projector device includes a control unit 10 that controls the entire apparatus and a projection unit 20 that displays an image with light from a light source. The control unit 10 includes a power key 11, a remote control light receiving element 12, an EEPROM 13, a main CPU (main control processor) 14, a sub CPU (sub control processor) 15, a regulator 16, a power LED 17, and an illuminance sensor 18.

The power key 11 is provided on the apparatus main body and is operated to turn on and off the power. The remote control light receiving element 12 receives various operation commands including a power on / off power key code transmitted as an infrared remote control signal from the external remote controller. Here, the power key 11 and the remote control light receiving element 12 are provided as a user interface. The EEPROM 13 is a non-volatile memory that holds control information including cumulative LED lighting time data, menu setting data, and input source setting data, and is connected to the main CPU 14 and the sub CPU 15 via the I ² C bus. The main CPU 14 controls the projection unit 20 based on the control information after activation. The sub CPU 15 performs control for starting or stopping the main CPU 14 according to the operation of the user interface and monitoring the operation of the main CPU 14. The regulator 16 generates main power and sub power from the AC commercial power. The main power source is for the operation of the main CPU 14 and the projection unit 20, and the sub power source is for the operation of the remote control light receiving element 12, the EEPROM 13, the sub CPU 15, the regulator 16, the power LED 17, and the illuminance sensor 18. When the regulator 16 is connected to an AC commercial power source, a sub power source is output from the regulator 16. The main power is output from the regulator 16 in response to an enable signal supplied from the sub CPU 15. The power LED 17 displays a power-on state and a power-off state (standby state) in different colors. The illuminance sensor 18 detects the brightness (illuminance) around the projector device, and notifies the sub CPU 15 of the detection result as an illuminance signal.

  The projection unit 20 is a projection LED 21 that is a light source that generates light corresponding to an image, a projection lens 22 that projects light from the projection LED 21, a projection screen 23 that displays an image corresponding to light projected from the projection lens 22, and An optical system adjuster 24 that adjusts the focus and the like of the optical system of the projection LED 21 and the projection lens 22 is included.

The main CPU 14 is activated with the supply of main power, and controls the projection unit 20 by executing a control program provided therein. In this control, the main CPU 14 outputs video signals and main power that are selectively supplied from various input sources to the projection unit 20. The main CPU 14 includes a built-in RAM 14A that temporarily stores control information including cumulative LED lighting time data, menu setting data, and input source setting data read from the EEPROM 13, and a RAM 14A for measuring the lighting time of the projection LED 21. Includes a lighting time counter 14B. The main CPU 14 periodically updates the lighting time counter 14 </ b> B in order to measure the lighting time of the projection LED 21 from the activation of the main CPU 14. The main CPU 14 changes the menu setting data and the input source setting data in the built-in RAM 14A according to the operation of the user interface, and outputs the setting data change notification and the change result to the sub CPU 15 via the I ² C bus. In the built-in RAM 14A, the changed setting data is represented by adding a change flag. Incidentally, when there is a user interface operation to turn off the power, the main CPU 14 obtains the lighting time from the count value of the lighting time counter 14B, and adds this lighting time to the accumulated LED lighting time data held in the built-in RAM 14B. The accumulated LED lighting time data, menu setting data, and input source setting data as the addition result are written in the EEPROM 13 as the latest control information, and thereafter, the sub CPU 15 is requested to turn off the power, that is, to stop the supply of the enable signal. Further, the main CPU 14 outputs an alive signal to the sub CPU 15 during operation. The alive signal may be a clock signal in which the H level and the L level are alternately switched at a cycle of, for example, 100 ms.

  The sub CPU 15 is activated when the sub power is supplied, and controls the main CPU 14 and other components by executing a control program provided therein. That is, the sub CPU 15 not only performs control for starting or stopping the main CPU 14 according to the operation of the user interface and monitoring the operation of the main CPU 14 as described above, but also, for example, corresponds to the illuminance signal from the illuminance sensor 18. (Pulse width modulation) signal is output to the power supply LED 17. The sub CPU 15 includes a built-in RAM 15A that temporarily stores control information including cumulative LED lighting time data, menu setting data, and input source setting data read from the EEPROM 13, and a lighting time provided in the RAM 15A for measuring the lighting time of the projection LED 21. A counter 15B and a watchdog timer 15C that detects and restarts the software runaway of the sub CPU 15 are included. The sub CPU 15 periodically updates the lighting time counter 15 </ b> B in order to measure the lighting time of the projection LED 21 from the activation of the main CPU 14. Further, the sub CPU 15 outputs an alive signal during operation to the main CPU 14 and also outputs a reset signal to the main CPU 14 when the main CPU 14 is restarted. The alive signal may be a clock signal in which the H level and the L level are alternately switched at a cycle of, for example, 100 ms. Incidentally, the sub CPU 15 supplies an enable signal to the regulator 16 after supplying the sub power, and stops supplying the enable signal in response to a power-off request from the main CPU 14.

FIG. 2 shows a setup process by the sub CPU 15. This setup process is performed along with the supply of sub power. When the setup process is started, the sub CPU 15 is initialized in block B1, and the I ² C bus usage mode is set to the master mode. In block B2, the control information is read from the EEPROM 13 to the built-in RAM 15A via the I ² C bus. Here, the control information includes cumulative LED lighting time data that is the total lighting time of the projection LED 21, LED power of the projection LED 21, screen brightness on the screen 23, menu setting data such as screen contrast on the screen 23, etc. Contains input source setting data that is the result of source selection. In block B3, it is checked whether an operation of the power key 11 is detected. If the operation of the power key 11 is not detected, it is checked in block B4 whether the power key code from the remote control is detected. If the power key code is not detected, the process waits for a predetermined time in block B5 and returns to block B3.

When the operation of the power key 11 is detected in the block B3 or when the power key code from the remote control is detected in the block B4, the main power output of the regulator 16 is turned on by the enable signal in the block B6 and the main CPU 14 is reset. It restarts by the signal and clears the LED lighting time counter 15B. In block B7, in order to be able to receive commands from the main CPU 15, the usage mode of the I ² C bus is set to the slave mode. Thereby, the setup process by the sub CPU 15 ends.

FIG. 3 shows a setup process by the main CPU 14. This setup process is performed in conjunction with the supply of a reset signal that is performed while the main power is being supplied. When the setup process is started, the main CPU 14 is initialized in block B11, and the usage mode of the I ² C bus is set to the master mode. In block B12, control information is read from the EEPROM 13 to the internal RAM 14A via the I ² C bus. Here, as described above, the control information includes cumulative LED lighting time data that is the total lighting time of the projection LED 21, LED power of the projection LED 21, screen brightness on the screen 23, screen contrast on the screen 23, and the like. Setting data and input source setting data which is a selection result of the input source are included. In block B13, the internal devices of the projection unit 20 are sequentially activated, the projection LED 21 is lit, and the LED lighting time counter 14B is cleared. In block B <b> 14, the projection setting of the source video is performed on the projection unit 20 based on the control information read from the EEPROM 13. Thereby, the setup process by the main CPU 14 ends.

  FIG. 4 shows control information saving processing by the sub CPU 15. This control information saving process is performed following the setup process shown in FIG. When this control information saving process is started, the process waits for a predetermined time in block B21, increments the LED lighting time counter 15B in block B22, and checks whether there is a setting data change notification from the main CPU 14 in block B23. If there is a setting data change notification, the setting data changed by the main CPU 14 is received in block B24, and the corresponding setting data held in the built-in RAM 15A is rewritten with this reception result.

  When there is no setting data change notification in block B23, or when the processing in block B24 ends, the level of the alive signal from the main CPU 14 is detected in block B25. In block B26, it is checked whether the alive signal has not changed beyond the reference time. The reference time may be 4 seconds, for example. If the alive signal changes within the reference time, the process returns to block B21.

On the other hand, if the alive signal does not change beyond the reference time, it is determined that the main CPU 14 has run out of software, and block B27 is executed. In this block B27, the lighting time is obtained from the count value of the LED lighting time counter 15B and added to the accumulated LED lighting time data held in the RAM 15A. In block B28, the usage mode of the I ² C bus is set to the master mode. In block B29, the control information held in the RAM 15A, that is, cumulative LED lighting time data, menu setting data, and input source setting data are written in the EEPROM 13 as the latest control information. In block B30, the main CPU 14 is restarted by a reset signal, and the LED lighting time counter 15B is cleared. In block 31, in order to be able to receive a command from the main CPU 14, the usage mode of the I ² C bus is set to the slave mode. After the process of block B31, the process returns to block B21. In this case, the master CPU 14 can acquire the latest control information from the EEPROM 13 by executing the setup process shown in FIG. The control information matches the control information held in the built-in RAM 15A.

FIG. 5 shows control information saving processing by the main CPU 14. This control information saving process is performed following the setup process shown in FIG. When the control information saving process is started, the block B41 waits for a predetermined time, the block 43 increments the LED lighting time counter 14B, and the block B43 sets a change flag added to the menu setting data and the input source setting data in the built-in RAM 14A. Check. When it is detected in block B44 that there is a change flag, only the setting data specified by the change flag in block B45 is transmitted to the sub CPU 15 via the I ² C bus, and the change flag added to the transmitted setting data To clear.

  When there is no change flag in block B44 or when the processing of block B45 is completed, the level of the alive signal from the sub CPU 15 is detected in block B46. In block B47, it is checked whether the alive signal has not changed beyond the reference time. The reference time may be, for example, 3 seconds shorter than the operation waiting time of the watchdog timer 15C of the sub CPU 15. Therefore, this reference time is shorter than the reference time for the main CPU 14. If the alive signal changes within the reference time, the process returns to block B41.

  On the other hand, if the alive signal does not change beyond the reference time, it is determined that the sub CPU 15 has run out of software, and block B48 is executed. In this block B48, the lighting time is obtained from the count value of the LED lighting time counter 14B and added to the accumulated LED lighting time data held in the RAM 14A. In block B49, the control information held in the built-in RAM 14A, that is, cumulative LED lighting time data, menu setting data, and input source setting data is written in the EEPROM 13 as the latest control information. In block B50, a setting for entering a sleep state to wait for the reset of the sub CPU 15 is performed. Thereby, the control information saving process by the main CPU ends.

Incidentally, since the main CPU 14 is responsible for all operations of the projector device, the monitoring operation of the sub CPU 15 is implemented as one task. The operation cycle of this task is desirably close to the operation cycle of the control information saving process by the sub CPU 14 shown in FIG. The reason is that it is most efficient to synchronize the data of both CPUs by matching the setting data transmission cycle from the main CPU 14 and the data reception cycle of the sub CPU 15. The basic operation of the task is the same as the operation of the sub CPU of Figure 4, while measuring the lamp lighting time, if there is a change in the data such as a menu setting value, the corresponding data to the sub CPU 15 via the I 2 ^C bus Send. As shown in FIG. 6, management of the presence / absence of setting data change is managed by a pair of setting data and a change flag. When the input source setting data is changed in another task (for example, input source switching task), the corresponding change flag is set. Make a set. Then, the change flag is sequentially checked in this task, and only the data for which the flag is set is transmitted to the sub CPU 15, and then the change flag is cleared. Through the above processing, the data held by both CPUs always coincide.

  When the main CPU 14 detects the software runaway of the sub CPU 15, the main CPU 14 writes the control information held in the built-in RAM 14 A to the EEPROM 13. After that, the sub CPU is restarted by the watchdog timer 15 C of the sub CPU 15 and waits according to the setup process shown in FIG. Sleep until it returns to the state.

  FIG. 7 shows the relationship between the illuminance around the projector device detected by the illuminance sensor 18 and the duty ratio of the PWM signal supplied to the power LED 17. In the example shown in FIG. 7, the duty ratio of the PWM signal is set to 100% when the illuminance is in the high level region, set to 80% when the illuminance is in the middle level region, and the illuminance is in the low level region. In some cases it is set to 60%.

  FIG. 8 shows dimming processing of the power LED 17 performed by the sub CPU 15. When this dimming process is started, the illuminance is read from the illuminance signal output as the detection result of the illuminance sensor 18 in block B61. When it is detected in block B62 that the illuminance is in the high level region, power supply LED 17 is driven with a PWM signal having a duty ratio (on duty) of 100% in block B63. On the other hand, when it is detected in block B64 that the illuminance is in the middle level region, power supply LED 17 is driven with a PWM signal having a duty ratio (on duty) of 80% in block B65. Further, if the illuminance is neither the high-level region nor the middle-level region, it is determined that the illuminance is in the low-level region, and the power LED 17 is driven with a PWM signal having a duty ratio (on-duty) of 60% in block B66. After the processes in blocks B63, B65, and B66, the process waits for a predetermined time in block B67 and returns to block B61.

  That is, the sub CPU 15 periodically obtains the illuminance from the detection result of the illuminance sensor 18, divides this illuminance into three levels, and sets the duty ratio of the PWM signal according to the obtained illuminance in the relationship shown in FIG. To do. As a result, the luminance of the power supply LED 17 is appropriately dimmed according to the PWM signal. Of course, the number of steps of the illuminance level and the PWM duty ratio may be arbitrarily determined according to the specifications of the projector device and the component accuracy. If the illuminance around the projector device is low, the user can recognize the display color of the LED 17 without a sense of incongruity even if the PWM duty ratio is lowered and the brightness of the power LED 17 is lowered, and this is effective in reducing power consumption during standby.

  In the projector apparatus according to the present embodiment, to reduce standby power, the power supply to the main CPU 14 is stopped during standby, and the sub CPU 15 monitors the power-on operation from the power key 11 and the remote control light receiving element 12, and the power-on operation. Is detected, the main CPU 14 is activated to project an image. While the power is on, the sub CPU 15 monitors the alive signal from the main CPU 14. When the sub CPU 15 detects a software runaway of the main CPU 14, the main CPU 14 is restarted immediately. As a result, there is no need to provide a watch dog timer IC for the main CPU 14.

  The sub CPU 15 reads the accumulated LED lighting time data from the EEPROM 13 during standby. Then, when the power is turned on, the main CPU 14 is activated and measurement of the LED lighting time is started. Further, the sub CPU 15 monitors the alive signal from the main CPU 14 while the power is on. Normally, the main CPU 14 writes the cumulative LED lighting time data to the EEPROM 13 when the power is turned off. However, when the sub CPU 15 detects the software runaway of the main CPU 14, the main CPU 14 calculates the LED lighting time and then writes the cumulative LED lighting time data to the EEPROM 13. The CPU 14 is restarted. The main CPU 14 can reproduce the state immediately before the runaway by reading the accumulated LED lighting time data from the EEPROM 13 at the time of activation.

  The sub CPU 15 reads the menu setting data and the input source setting data from the EEPROM 13 during standby. Then, the main CPU 14 is activated when the power is turned on. While the power is on, the main CPU 14 transmits the corresponding setting data to the sub CPU 15 every time the menu setting data and the input source setting data are changed. On the other hand, the sub CPU 15 monitors an alive signal from the main CPU 14. Normally, the main CPU 14 writes these setting data to the EEPROM 13 when the power is turned off. However, when the sub CPU 15 detects the software runaway of the main CPU 14, it writes these menu setting data and input source setting data to the EEPROM 13, and then restarts the main CPU 14. To do. The main CPU 14 can reproduce the state immediately before the runaway by reading the menu setting data and the input source setting data from the EEPROM 13 at the time of startup.

  Further, when the power is turned on, the main CPU 14 transmits corresponding setting data to the sub CPU 15 every time the menu setting data and the input source setting data are changed. Also, the alive signal from the sub CPU 15 is monitored. When the software runaway of the sub CPU 15 is detected, the LED lighting time is calculated, and the menu setting data and the input source setting data are written in the EEPROM 13 before the sub CPU 15 is reset by the watchdog timer 15C. As a result, the latest control information is retained in the EEPROM 13 even when the sub CPU 15 runs out of software.

  Further, during standby, most of the power consumption is consumed for driving the power supply LED 17. The power LED 17 can light a plurality of colors under the control of the sub CPU 15 so that the user can distinguish between a standby state and a power-on state. The sub CPU 15 detects the illuminance around the projector device using the illuminance sensor 18 installed in the projector device, and adjusts the luminance of the power LED 17 with the PWM signal in conjunction with it, thereby reducing power consumption particularly during standby. it can.

  In addition, this invention is not limited to the above-mentioned embodiment, It can deform | transform variously in the range which does not deviate from the summary.

It is a figure which shows schematic circuit structure of the projector apparatus which concerns on one Embodiment of this invention. It is a figure which shows the setup process by the sub CPU shown in FIG. It is a figure which shows the setup process by the main CPU shown in FIG. It is a figure which shows the control information saving process by the sub CPU shown in FIG. It is a figure which shows the control information save process by the main CPU shown in FIG. It is a figure which shows the content of the main CPU side internal RAM shown in FIG. It is a figure which shows the relationship between the illumination intensity around the projector apparatus detected by the illumination intensity sensor shown in FIG. 1, and the duty ratio of the PWM signal supplied to power supply LED. The light control process of the power supply LED performed by the sub CPU shown in FIG. 1 is shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Control part, 11 ... Power key, 12 ... Remote control light receiving element, 13 ... EEPROM, 14 ... Main CPU, 14A ... Built-in RAM, 14B ... LED lighting time counter, 15 ... Sub CPU, 15A ... Built-in RAM, 15B ... LED Lighting time counter, 15C ... watch dock timer, 16 ... regulator, 17 ... power LED, 18 ... illuminance sensor, 20 ... irradiation unit, 21 ... projection LED.

Claims (10)

  A projection unit that projects an image with light from a light source, a non-volatile memory that holds control information, a user interface that performs various operations, and the main control processor that controls the projection unit based on the control information after activation And a sub-control processor for starting and stopping the main control processor according to the operation of the user interface and monitoring the operation of the main control processor, and the sub-control processor detects software runaway of the main control processor The change of the control information that has occurred in the operation of the main control processor up to this detection time is reflected in the control information held in the nonvolatile memory, and the main control processor is restarted. A projector device.   The non-volatile memory retains the cumulative lighting time data of the light source as the control information, and the sub-control processor measures the lighting time of the light source from the start of the main control processor, and accompanying the software runaway of the main control processor The projector device according to claim 1, wherein the cumulative lighting time data held in the nonvolatile memory is rewritten to a content obtained by adding the measurement result of the lighting time.   The non-volatile memory holds various setting data as the control information, and the main control processor acquires the various setting data from the non-volatile memory after startup, and stores the various setting data according to an operation of the user interface. It is configured to change at least one and output the change result to the sub-control processor, the sub-control processor holds the change result output from the main control processor as the latest setting data, and The projector apparatus according to claim 1, wherein the various setting data stored in the nonvolatile memory is rewritten with the latest setting data in accordance with a software runaway of a control processor.   The main control processor detects a software runaway of the sub-control processor, and reflects the change in the control information that has occurred in the operation of the main control processor up to this detection time in the control information held in the nonvolatile memory The projector device according to claim 1, wherein the projector device is configured to cause the projector to operate.   The non-volatile memory holds cumulative lighting time data of the light source as the control information, and the main control processor is configured to measure the lighting time of the light source from activation of the main control processor, and the sub-control A configuration in which the cumulative lighting time data held in the nonvolatile memory is rewritten to contents obtained by adding the lighting time measurement result by the main control processor in accordance with a software runaway of the processor. Item 5. The projector device according to Item 4.   The non-volatile memory holds various setting data as the control information, and the main control processor acquires the various setting data from the non-volatile memory after startup, and stores the various setting data according to an operation of the user interface. At least one is changed, and the change result is configured to be held as the latest setting data, and the various setting data held in the non-volatile memory in accordance with the software runaway of the sub-control processor. The projector device according to claim 4, wherein the projector device is configured to be rewritten with the latest setting data.   The main control processor and the sub control processor are respectively configured to detect when the alive signal from the sub control processor and the alive signal from the main control processor do not change over a reference time as software runaway. The projector device according to claim 4.   The power control LED further includes a power LED that indicates a power state of the main control processor and an illuminance sensor that detects ambient illuminance, and the sub control processor uses a pulse width modulation signal corresponding to the illuminance from the illuminance sensor to determine the brightness of the power LED. The projector device according to claim 1, wherein the projector device is configured to adjust the frequency. The projector device according to claim 1, wherein the nonvolatile memory is connected to the main control processor and the sub control processor via an I ² C bus.   A projection unit that projects an image with light from a light source, a non-volatile memory that holds control information, a user interface that performs various operations, and the main control processor that controls the projection unit based on the control information after activation A control method for starting and stopping the main control processor according to an operation of the user interface, and a sub-control processor for monitoring the operation of the main control processor, wherein the main control processor software includes: The runaway is detected by the sub-control processor, and the change of the control information generated in the operation of the main control processor by the sub-control processor until this detection time is reflected in the control information held in the nonvolatile memory, Further, the control is characterized in that the main control processor is restarted. Law.

Images