JP4501682B2 - Electronic device, control method thereof, and program - Google Patents

Description

  The present invention relates to an electronic device, a control method thereof, and a program. In particular, when a plurality of microcomputers are mounted and one of the microcomputers is operated using data obtained as a result of the operation of another microcomputer, The present invention relates to an electronic device that enables a microcomputer to operate quickly, a control method thereof, and a program.

  There are electronic devices equipped with a plurality of microcomputers. For example, in the case of a video camera, a power supply control microcomputer that controls the power supply block that controls the power supplied to each part of the video camera, a camera microcomputer that controls the imaging block that performs the imaging process, and writing the captured image to the media Control the recording / playback block that controls the recording or playback of the media, such as reading the image recorded on the media, and the synchronization block that supplies a predetermined synchronization signal to the camera microcomputer and the media control microcomputer And a system control microcomputer that controls (controls) each microcomputer such as a camera microcomputer, a media control microcomputer, and a baseband microcomputer.

  FIG. 1 is a flowchart for explaining a conventional start-up process in a video camera equipped with a plurality of microcomputers as described above.

  When the power button of the video camera is turned on by the user, the power supply control microcomputer supplies a reset release signal to each of the camera microcomputer, media control microcomputer, baseband microcomputer, and system control microcomputer. Performs initialization processing of hardware (hereinafter referred to as H / W) and OS (Operating System) in the block controlled by.

  After completion of the H / W and OS initialization processing, the system control microcomputer generates a camera peripheral part start command for starting the camera peripheral part in the imaging block in step S1, and outputs it to the camera microcomputer. Proceed to Here, the imaging block is a digital camera that converts the image signal output from the camera body, which is composed of an image sensor such as an iris, shutter, and CCD (Charge Coupled Device) that photoelectrically converts incident light. It is composed of a signal processing circuit that performs processing, image quality correction processing, and the like, a camera peripheral section that includes a memory that temporarily stores an image (signal), and a camera microcomputer.

  After a predetermined time has elapsed from the output of the camera peripheral section start command in step S1 (after a sufficient time has elapsed for the camera peripheral section to start), in step S2, the system control microcomputer turns on the power of the camera body section. A camera body power ON command to be generated is generated and output to the camera microcomputer, and the process proceeds to step S3.

  In step S3, the system control microcomputer determines whether or not a response (ON response) indicating that the power source of the camera body is turned on has been received from the camera microcomputer, and there is an ON response (receives the ON response). Wait until.

  If there is an ON response from the camera microcomputer in step S3, the process proceeds to step S4, where the system control microcomputer generates a moving image shooting mode command for operating the camera microcomputer in the moving image shooting mode, and outputs it to the camera microcomputer. Proceed to S5.

  In step S5, the system control microcomputer determines whether or not a response indicating that the setting of the moving image shooting mode has been completed (mode completion response) is received from the camera microcomputer, and there is a mode completion response (receives the mode completion response). Wait until

  If there is a mode completion response in step S5, the process proceeds to step S6, where the system control microcomputer generates a synchronization signal output command for operating the baseband microcomputer in the moving image shooting mode, and outputs it to the baseband microcomputer. That is, in step S5, the system control microcomputer outputs a synchronization signal output command to the baseband microcomputer together with data indicating that the camera microcomputer is ready for operation and is in the moving image shooting mode, and ends the process.

  The baseband microcomputer that has received the synchronization signal output command for operating in the moving image shooting mode from the system control microcomputer generates a synchronization signal corresponding to the moving image shooting mode and supplies it to the camera microcomputer. As a result, the camera microcomputer can execute a moving image capturing (photographing) process synchronized with the synchronization signal from the baseband microcomputer.

  FIG. 2 shows a time chart of the activation process described in FIG.

At time t _1, the power button of the video camera is turned on, the system control microcomputer, the camera microcomputer, each of the baseband microcomputer starts the initialization processing of H / W and OS.

At time t ₂ after the elapse of T1 from time t ₁ , the system control microcomputer, camera microcomputer, and baseband microcomputer H / W and OS initialization processing are completed, and the system control microcomputer generates and transmits camera control data. Start processing. Further, at time t _2, the in camera microcomputer, in response to the camera control data communication process of the system control microcomputer, the camera control data setting processing is started.

  The camera control data generation and communication process and the camera control data setting process correspond to the processes described in steps S1 to S5 in FIG. 1, and the system control microcomputer performs a camera peripheral unit start command, a camera body unit power on command, a moving image. The camera microcomputer generates and outputs a shooting mode command, and the camera microcomputer sets and responds to each command from the system control microcomputer.

At time t ₃ after a lapse of the time t ₂ T2 hours, the system control microcomputer which receives a mode completion response from the camera microcomputer starts baseband data generation and communication processing. At time t ₃ , the baseband microcomputer starts the baseband data setting process corresponding to the baseband data communication process of the system control microcomputer.

  The baseband data generation and communication process and the baseband data setting process correspond to the process described in step S6 of FIG. 1, and the system control microcomputer outputs a synchronization signal output command for operating in the moving image shooting mode, and the baseband data The microcomputer generates a synchronization signal corresponding to the moving image shooting mode in response to a synchronization signal output command from the system control microcomputer, and supplies the synchronization signal to the camera microcomputer.

As a result, the camera microcomputer can operate in the moving image shooting mode, and the start-up process ends. In other words, after time t ₄ after the elapse of T3 from time t ₃ , the user can shoot a moving image with the digital camera. As shown in FIG. 2, the activation processing time for the activation processing is (T1 + T2 + T3) time from the turning-on operation of the power button of the video camera at time t ₁ to time t ₄ at which moving image shooting is possible. .

  As described above, in the activation process of the conventional digital camera shown in FIGS. 1 and 2, the system control microcomputer uses the baseband data indicating that the camera microcomputer is ready for operation and is in the moving image shooting mode. In order to transmit to the microcomputer, the camera microcomputer is first controlled (camera control data generation and communication processing is performed), and control (baseband data generation and communication processing) is performed on the baseband microcomputer based on the result of the control. It was. Therefore, if the time required to control the camera microcomputer (time required for camera control data generation and communication processing) becomes longer, the time required to start control of the baseband microcomputer will be delayed, and eventually the start process of the video camera will be required. There has been a problem that the time (start-up processing time) becomes longer. That is, there is a problem that the time required for operating the video camera in a predetermined mode becomes long.

  For example, in an electronic device such as a video camera, several methods for shortening the startup processing time have been proposed (see, for example, Patent Document 1).

JP 2003-274640 A

  However, the problem described above occurs when a plurality of microcomputers are mounted and at least one of them is operated using data obtained as a result of the operation of other microcomputers.

  The present invention has been made in view of such a situation. In the case where a plurality of microcomputers are mounted and one of them is operated using data obtained as a result of the operation of another microcomputer, This makes it possible to operate the microcomputer quickly.

The electronic device of the present invention includes a first storage unit that stores temporary data representing a predetermined mode assumed as a mode when the first information processing unit operates in response to a predetermined input, and first information The processing unit is controlled to operate in a mode corresponding to a predetermined input among the plurality of modes, and the second information processing unit is configured to use the temporary data stored in the first storage unit. A first control unit that performs control to operate in a predetermined mode of the above modes, and a result representing a control result in which the first control unit operates the first information processing unit in a mode corresponding to a predetermined input A second storage means for storing data; and a second control means for storing the result data stored in the second storage means in the first storage means instead of the temporary data, and the first control The means stores the result data stored in the first storage means. Using data, the second information processing means, and performs control to operate in a mode having the same mode of the first information processing means.

The second control means can further generate temporary data and store it in the first storage means.

In the electronic device control method according to the present invention, the first control unit performs control to operate the first information processing unit in a mode corresponding to a predetermined input among a plurality of modes . Using temporary data representing a predetermined mode assumed as a mode when the first information processing unit operates , stored in the storage unit , the second information processing unit is set to a predetermined one of a plurality of modes. There line control to operate in the mode, the first control means, obtains the result data indicating the control result of operating in a mode corresponding to the first information processing means to a predetermined input from the first information processing means Then, the second storage means stores the result data stored in the second storage means in the first storage means instead of the temporary data, and the first control means Uses the result data stored in the first storage means The second information processing means, and performs control to operate in a mode having the same mode of the first information processing means.

Program of the present invention, the computer, the first information processing unit, among the plurality of modes, performs control to operate in a mode corresponding to the predetermined input, are stored in the first storage means, Control is performed to operate the second information processing means in a predetermined mode among a plurality of modes, using temporary data representing a predetermined mode assumed as a mode when the first information processing means operates. Result data representing a control result obtained by operating the first information processing unit in a mode corresponding to a predetermined input is acquired from the first information processing unit, stored in the second storage unit, and stored in the second storage unit. The result data stored in the means is stored in the first storage means instead of the temporary data, and the second information processing means is changed to the first information using the result data stored in the first storage means. The same mode as the processing mode In is intended to execute the step of performing control to operate.

In the present invention, the first information processing means is controlled to operate in a mode corresponding to a predetermined input among a plurality of modes, and is assumed as a mode when the first information processing means operates. Control is performed to operate the second information processing means in a predetermined mode among a plurality of modes, using temporary data representing the predetermined mode . Further, result data representing a control result obtained by operating the first information processing unit in a mode corresponding to a predetermined input is acquired from the first information processing unit and stored in the second storage unit. The result data stored in the second storage means is stored in the first storage means instead of the temporary data, and the second information processing means is changed to the mode of the first information processing means using the result data. Control for operating in the same mode is further performed.

  According to the present invention, when a plurality of microcomputers are mounted and one of them is operated using data obtained as a result of the operation of another microcomputer, the one microcomputer can be operated quickly.

  Embodiments of the present invention will be described below. Correspondences between constituent elements described in the claims and specific examples in the embodiments of the present invention are exemplified as follows. This description is to confirm that specific examples supporting the invention described in the claims are described in the embodiments of the invention. Therefore, even if there are specific examples that are described in the embodiment of the invention but are not described here as corresponding to the configuration requirements, the specific examples are not included in the configuration. It does not mean that it does not correspond to a requirement. On the contrary, even if a specific example is described here as corresponding to a configuration requirement, this means that the specific example does not correspond to a configuration requirement other than the configuration requirement. not.

  Further, this description does not mean that all the inventions corresponding to the specific examples described in the embodiments of the invention are described in the claims. In other words, this description is an invention corresponding to the specific example described in the embodiment of the invention, and the existence of an invention not described in the claims of this application, that is, in the future, a divisional application will be made. Nor does it deny the existence of an invention added by amendment.

The electronic device according to claim 1 is:
Electronic device (for example, video camera of FIG. 3) having at least first and second information processing means (for example, camera microcomputer 22 and baseband microcomputer 25 of FIG. 3) operating in any one of a plurality of modes. In 1)
First storage means (for example, the base memory 54 in FIG. 4) for storing temporary data representing a predetermined mode assumed as a mode when the first information processing means operates in response to a predetermined input;
While performing control to operate the first information processing means in a mode according to the predetermined input among the plurality of modes, using the temporary data stored in the first storage means, First control means (for example, communication task 51 in FIG. 4) for controlling the second information processing means to operate in the predetermined mode among the plurality of modes ;
Second storage means (for example, camera memory 52 in FIG. 4) for storing result data representing a control result obtained when the first control means operates the first information processing means in a mode corresponding to a predetermined input. When,
Second control means for storing the result data stored in the second storage means in the first storage means instead of the temporary data (for example, the generation task 53 in FIG. 4);
With
The first control means operates the second information processing means in the same mode as the mode of the first information processing means using the result data stored in the first storage means. Do control
It is characterized by that.

The electronic device control method according to claim 3 is:
First and second information processing means operating in any one of a plurality of modes, first and second storage means for storing predetermined data, and the first and second information processing means In a control method of an electronic device having at least first control means for controlling the first control means and second control means for controlling the first and second storage means ,
The first control unit performs control to operate the first information processing unit in a mode corresponding to a predetermined input among the plurality of modes (for example, processing in step S31 in FIG. 5). , Using the temporary data representing a predetermined mode assumed as a mode when the first information processing means operates , stored in the first storage means, the second information processing means, the row physician control to operate in a predetermined mode of the plurality of modes (e.g., the processing of steps S51 and S52 in FIG. 6),
The first control means acquires result data representing a control result obtained by operating the first information processing means in a mode corresponding to a predetermined input from the first information processing means, and stores the second storage. Stored in the means (for example, the process of step S33 in FIG. 5),
The second control unit stores the result data stored in the second storage unit in the first storage unit instead of the temporary data (for example, the process of step S73 in FIG. 7).
The first control means operates the second information processing means in the same mode as the mode of the first information processing means using the result data stored in the first storage means. Control is performed (for example, the process of step S52 in FIG. 6).
It is characterized by that.

The program according to claim 4 is:
A computer that controls an electronic device having at least first and second information processing means that operate in any one of a plurality of modes, and first and second storage means that store predetermined data .
The first information processing unit is controlled to operate in a mode corresponding to a predetermined input among the plurality of modes (for example, the process of step S31 in FIG. 5) and stored in the first storage unit Using the stored temporary data representing a predetermined mode assumed as a mode when the first information processing unit operates, the second information processing unit is changed to the one of the plurality of modes. line physician control to operate in a predetermined mode (e.g., the processing of steps S51 and S52 in FIG. 6),
Result data representing a control result obtained by operating the first information processing unit in a mode corresponding to a predetermined input is acquired from the first information processing unit and stored in the second storage unit (for example, FIG. Step S33 in step 5),
The result data stored in the second storage means is stored in the first storage means instead of the temporary data (for example, the process of step S73 in FIG. 7),
Using the result data stored in the first storage unit, the second information processing unit is controlled to operate in the same mode as the mode of the first information processing unit (for example, FIG. 6). Of step S52)
This is a program for executing steps.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 3 shows a configuration example of an embodiment of a video camera (digital video camera) to which the present invention is applied.

  The video camera 1 in FIG. 3 includes a system block 11, an imaging block 12, a synchronization block 13, a recording / playback block 14, a display unit 15, a power supply block 16, and an operation unit 17.

  The system block 11 has a system control microcomputer (microcomputer) 21. The system control microcomputer 21 controls the imaging block 12, the synchronization block 13, and the recording / reproducing block 14 in accordance with an operation signal corresponding to a user operation from the operation unit 17 according to a predetermined program stored in a memory (not shown). Control (supervise). Here, the predetermined program for controlling the imaging block 12, the synchronization block 13, and the recording / reproducing block 14 is recorded on, for example, a removable medium 31 described later, and is installed in the system block 11 via the recording / reproducing block 14.

  The imaging block 12 is output from a camera main body 23 that includes an imaging device such as a camera microcomputer 22 that controls it, an iris, a shutter, a CCD that photoelectrically converts incident light from the subject, and the camera main body 23. It has a camera peripheral section 24 that includes a signal processing circuit that performs digital conversion processing, image quality correction processing, and the like on an image signal, and a memory that temporarily stores an image (signal).

  The camera microcomputer 22 performs subject imaging processing under the control of the system control microcomputer 21. In other words, the camera microcomputer 22 controls the camera main body 23 and the camera peripheral unit 24 to image a subject, and supplies an image signal obtained as a result to the recording / reproducing block 14 or the display unit 15. The camera microcomputer 22 performs processing in synchronization with a synchronization signal supplied from the baseband microcomputer 25.

  The synchronization block 13 has a baseband microcomputer 25. The baseband microcomputer 25 supplies a synchronization signal to the imaging block 12, the recording / reproducing block 14, and the display unit 15 under the control of the system control microcomputer 21.

  For example, the baseband microcomputer 25 receives a moving image when a synchronization signal output command is supplied from the system control microcomputer 21 together with data indicating that the camera microcomputer 22 is ready for operation and is in the moving image shooting mode. A synchronization signal corresponding to the shooting mode is generated and supplied to the imaging block 12, the recording / reproducing block 14, and the display unit 15.

  Further, for example, the baseband microcomputer 25 receives a synchronization signal output command from the system control microcomputer 21 together with data indicating that the media control microcomputer 26 is ready for operation and is in the moving image playback mode. Generates a synchronization signal corresponding to the moving image reproduction mode, and supplies it to the imaging block 12, the recording / reproducing block 14, and the display unit 15.

  The recording / reproducing block 14 controls the media control microcomputer 26, encodes the image signal by a predetermined encoding method such as MPEG (Moving Picture Experts Group), Motion-JPEG (Joint Photographic Experts Group), or JPEG, and is removable. The recording unit 27 stores the media 31 and the reproducing unit 28 reads and decodes the image signal encoded and recorded by the above-described predetermined encoding method.

  The media control microcomputer 26 controls the recording unit 27 under the control of the system control microcomputer 21 to encode the image signal supplied from the imaging block 12 and record the encoded image signal on the removable medium 31 or to control the playback unit 28. Then, the image signal recorded on the removable medium 31 is read, decoded, and supplied to the display unit 15. The media control microcomputer 26 performs processing in synchronization with a synchronization signal supplied from the baseband microcomputer 25.

  The display unit 15 is configured by, for example, an LCD (Liquid Crystal Display) or the like, and an image signal supplied from the imaging block 12 or the recording / reproducing block 14 is converted into an NTSC (National Television System Committee), PAL (Phase Alternation by Line), or the like. Is converted into a predetermined method and displayed as an image. The display unit 15 performs processing in synchronization with a synchronization signal supplied from the baseband microcomputer 25.

  The power supply block 16 has a power supply control microcomputer 29 and supplies power to each part of the video camera 1. When the operation signal indicating that the power button is turned on is supplied from the operation unit 17, the power control microcomputer 29 cancels the reset to each of the system block 11, the imaging block 12, the synchronization block 13, and the recording / reproducing block 14. Supply the signal. Thereby, each of the system control microcomputer 21, the camera microcomputer 22, the baseband microcomputer 25, and the media control microcomputer 26 starts initialization processing of H / W and OS in the block. In FIG. 3, the control lines from the power supply block 16 are not shown.

  The operation unit 17 includes various operation buttons, receives a user operation, and supplies an operation signal corresponding to the user operation to the system block 11 or the power supply block 16. For example, the operation unit 17 includes, as operation buttons, a power button for turning the power of the video camera 1 on or off, a release button for performing imaging (shooting), a zoom button for enlarging or reducing a subject, a moving image shooting mode, There are mode switching buttons for switching modes such as a moving image playback mode, a still image shooting mode, or a still image playback mode. The video camera 1 is activated (operated) in the moving image shooting mode immediately after the power is turned on (the power button is turned on).

  The removable medium 31 includes a nonvolatile memory such as a flash memory, a magneto-optical disk such as MD (Mini Disk) (registered trademark) or Hi-MD (registered trademark), or an optical disk such as DVD (Digital Versatile Disk). The video camera 1 is detachable. The removable medium 31 records an image signal supplied from the imaging block 12 and the like.

  In the video camera 1 configured as described above, when an operation signal indicating that the power button is turned on by the user is supplied to the power supply block 16, the power supply control microcomputer 29 causes the system block 11, the imaging block 12, and the synchronization. A reset release signal is supplied to each of the block 13 and the recording / reproducing block 14. Thereby, each of the system control microcomputer 21, the camera microcomputer 22, the baseband microcomputer 25, and the media control microcomputer 26 starts initialization processing of H / W and OS in the block.

  The system control microcomputer 21 supplies a control signal for operating in the moving image shooting mode to the imaging block 12 after receiving the hardware / OS and OS initialization processing in the block, and receives a response signal for the control signal. Further, the system control microcomputer 21 supplies a control signal for operating in the moving image shooting mode to the synchronization block 13.

  In the video camera 1 shown in FIG. 3, since the operation is started in the moving image shooting mode immediately after the power is turned on, the system control microcomputer 21 sets the initial H / W and OS in the block as described above. After the conversion processing is completed, a control signal for operating in the moving image shooting mode is supplied to the imaging block 12 and the synchronization block 13, but the video camera 1 immediately after turning on the power reproduces a moving image recorded on the removable medium 31, for example. When the operation is started in the moving image reproduction mode, the system control microcomputer 21 sends a control signal for operating in the moving image reproduction mode to the recording / reproducing block 14 and the synchronization block after completing the initialization processing of the hardware and OS in the block. 13 is supplied.

  FIG. 4 is a block diagram illustrating a functional configuration example of the system control microcomputer 21.

  The system control microcomputer 21 includes a communication task 51, a camera memory 52, a generation task 53, and a base memory 54.

  The communication task 51 is constituted by, for example, a CPU (Central Processing Unit), supplies a control signal for operating in the moving image shooting mode to the camera microcomputer 22 (of the shooting block 12), and represents a control result for the control signal. Actual data (result data) is acquired and written (stored) in the camera memory 52. When the communication task 51 acquires all the actual data for the transmitted control signal from the camera microcomputer 22 and writes it in the camera memory 52, the communication task 51 sets an acquisition completion flag in the camera memory 52 (sets the acquisition completion flag to true). To do).

  The communication task 51 reads data stored in the base memory 54 and supplies the data to the baseband microcomputer 23. Then, the communication task 51 reads the data stored in the base memory 54 until the data for which the update completion flag stored in the base memory 54 is true is read and supplied to the baseband microcomputer 23. The process of supplying to the band microcomputer 23 is repeated.

  The communication task 51 starts the above-described operation (process) after the generation task 53 finishes the initialization processing of the hardware / OS and OS in the block.

  The camera memory 52 is composed of a volatile memory such as a DRAM (Dynamic Random Access Memory), for example, and stores data supplied from the communication task 51. Note that the data supplied from the communication task 51 is actual data (result data) representing a control result for the control signal transmitted to the camera microcomputer 22 as described above.

  The generation task 53 is constituted by, for example, a CPU, and executes initialization processing of H / W and OS in the system block 11 when a reset release signal is supplied from the power supply control microcomputer 29. Then, after the H / W or OS initialization process is completed, the generation task 53 generates data to be supplied to the baseband microcomputer 23 and writes the data to the base memory 54. Here, the data generated in the generation task 53 and recorded in the base memory 54 is data (hereinafter referred to as activation data) for operating the baseband microcomputer 23 in a predetermined mode (moving image shooting mode). This activation data represents the above-described synchronization signal output command (command) and the moving image shooting mode when it is assumed that the camera microcomputer 22 operates (starts) in the moving image shooting mode as controlled by the communication task 51. At least temporary data (temporary data) is included.

  Further, the generation task 53 acquires actual data as a control result from the camera memory 52 and stores it in a location (address) where temporary data corresponding to the acquired actual data is stored in the base memory 54 (overwriting). To do). That is, the generation task 53 replaces temporary data stored in the base memory 54 with actual data acquired from the camera memory 53. Note that the generation task 53 sets the update completion flag in the base memory 54 when the data (actual data) in the camera memory 52 for which the acquisition completion flag is set is overwritten on the base memory 54 (the update completion flag is set to true). ).

  As a result, as described above, the communication task 51 reads the data stored in the base memory 54 and supplies it to the baseband microcomputer 23. Therefore, first, the activation data including temporary data is supplied to the baseband microcomputer 23. Finally, start-up data including actual data is supplied to the baseband microcomputer 23.

  The base memory 54 is configured by, for example, a nonvolatile memory such as a flash memory or a volatile memory such as a DRAM (Dynamic Random Access Memory), and stores data supplied from the generation task 53.

  In the system control microcomputer 21 configured as described above, the control signal that the communication task 51 operates (starts up) in the moving image shooting mode is supplied to the camera microcomputer 22 after the initialization processing of the hardware and OS in the block is completed. . In addition, the communication task 51 supplies a control signal for operating the baseband microcomputer 23 in the moving image shooting mode. That is, the communication task 51 supplies the baseband microcomputer 23 with start-up data including temporary data that is generated by the generation task 53 and stored in the base memory 54 and that represents the moving image shooting mode in which the camera microcomputer 22 is assumed to have operated. Then, the baseband microcomputer 23 is operated in the moving image shooting mode.

  Further, the communication task 51 acquires actual data representing the actual operation state (control result) returned from the camera microcomputer 22 in response to the control signal, and writes it in the camera memory 52. The generation task 53 overwrites the actual data stored in the camera memory 52 at the temporary data location in the base memory 54 and updates the data in the base memory 54 to the activation data including the actual data. The communication task 51 supplies activation data including actual data to the baseband microcomputer 23 instead of activation data including temporary data.

  Here, as actual data representing the actual operation state of the camera microcomputer 22 returned from the camera microcomputer 22, for example, the state in which the camera microcomputer 22 is ready for operation as described in the conventional activation process of FIG. And data indicating that the camera microcomputer 22 is set to the moving image shooting mode.

  Referring to the flowcharts of FIGS. 5 and 6, the actual data acquisition process for acquiring actual data from the camera microcomputer 22 performed by the communication task 51 and the startup data (including temporary data or actual data) in the base memory 54 A startup data transmission process of reading and transmitting to the baseband microcomputer 23 will be described. The communication task 51 starts the process from either the actual data acquisition process or the startup data transmission process after the initialization process of the H / W and OS in the system block 11 is completed. These processes are executed by a predetermined program installed in the system control microcomputer 21.

  First, the actual data acquisition process shown in FIG. 5 will be described.

  First, in step S31, the communication task 51 transmits (supplies) a control signal for operating (starting) in the moving image shooting mode to the camera microcomputer 22, and the process proceeds to step S32.

  In step S32, the communication task 51 acquires actual data representing the control result for the control signal transmitted in step S31, and proceeds to step S33.

  In step S33, the communication task 51 writes (stores) the acquired actual data in the camera memory 52, and proceeds to step S34.

  In step S34, the communication task 51 transmits to the camera microcomputer 22 all the control signals for operating (starting up) in the moving image shooting mode, that is, acquiring all the actual data from the camera microcomputer 22 or not. It is determined whether actual data representing a control result for the control signal has been acquired from the camera microcomputer 22. If it is determined in step S34 that acquisition of all actual data has not been completed, step S35 is skipped and the process is terminated.

  On the other hand, if it is determined in step S34 that the acquisition of all actual data has been completed, the process proceeds to step S35, and the communication task 51 completes the acquisition of actual data set at a predetermined address in the camera memory 52. An acquisition completion flag indicating that the acquisition has been completed is set (the acquisition completion flag is set to true), and the process ends.

  Next, the startup data transmission process shown in FIG. 6 will be described.

  First, in step S51, the communication task 51 reads the activation data stored in the base memory 54, and proceeds to step S52.

  In step S52, the communication task 51 transmits (supplies) the startup data read from the base memory 54 in step S51 to the baseband microcomputer 23, and proceeds to step S53.

  In step S <b> 53, the communication task 51 confirms whether the update completion flag of the activation data set to a predetermined address of the baseband microcomputer 23 is true, and ends the process. This activation data update completion flag is a flag that is true when all of the temporary data included in the activation data stored in the base memory 54 has become actual data (updated).

  The above-described actual data acquisition process in FIG. 5 and the startup data transmission process in FIG. 6 are performed by repeating two processes alternately so that one of the processes is executed and then the other process is executed. It is made so that. When the communication task 51 completes the acquisition of the actual data from the camera microcomputer 22, in other words, when the process of step S35 of FIG. 5 is executed, the (repeated) execution of the subsequent actual data acquisition process is terminated. To do. Further, the communication task 51 transmits the activation data whose update completion flag is true to the baseband microcomputer 23, that is, when the activation data update completion flag is true in step S53 of FIG. Thereafter, the (repeated) execution of the startup data transmission process of FIG. 6 is terminated.

  Next, a startup data generation process of the generation task 53 for generating startup data to be supplied to the baseband microcomputer 23 will be described with reference to the flowchart of FIG. This processing is started after the H / W and OS initialization processing in the system block 11 by the generation task 53 is completed. These processes are executed by a predetermined program installed in the system control microcomputer 21.

  First, in step S71, the generation task 53 generates activation data including temporary data representing the mode of the camera microcomputer 22 when the camera microcomputer 22 is assumed to operate (activate) as controlled by the communication task 51. The data is written (stored) in the base memory 54, and the process proceeds to step S72.

  In step S72, the generation task 53 acquires actual data representing the control result from the camera memory 52, and proceeds to step S73.

  In step S73, the generation task 53 overwrites (stores) the actual data acquired in step S72 with the location in the base memory 54 where the temporary data corresponding to the acquired actual data is stored. Proceed to

  In step S74, the generation task 53 determines whether all the temporary data stored in the base memory 54 has been updated to actual data. That is, when the acquisition completion flag of the camera memory 52 is true, this indicates that the communication task 51 has written all the actual data to the camera memory 52, and the generation task 53 indicates that the acquisition completion flag is true. According to whether or not the data in the camera memory 52 in the above state is acquired in step S72 described above and written in the base memory 54 in step S73, all the temporary data stored in the base memory 54 is converted into actual data. It is determined whether or not it has been updated.

  If all the temporary data stored in the base memory 54 has not been updated to actual data in step S74, the process returns to step S72, and the generation task 53 repeats the processes in steps S72 to S74.

  On the other hand, if all the temporary data stored in the base memory 54 is updated to actual data in step S74, the process proceeds to step S75, and the generation task 53 sets an update completion flag in the base memory 54 (update). The completion flag is set to true), and the process ends.

  As described above, the generation task 53 is assumed as a mode when the camera microcomputer 22 operates in response to the power button being turned on (predetermined input) after the initialization processing of the hardware and OS in the system block 11 is completed. Activation data including temporary data representing the moving image shooting mode (predetermined mode) is generated and stored in the base memory 54. The communication task 51 controls (activates) the camera microcomputer 22 in a moving image shooting mode which is a mode in response to turning on of the power button among a plurality of modes, and temporary data stored in the base memory 54. Is used to control the baseband microcomputer 23 to operate in the moving image shooting mode (among a plurality of modes).

  Further, the communication task 51 acquires actual data (result data) representing a control result obtained by operating the camera microcomputer 22 in the moving image shooting mode, and stores it in the camera memory 52. The generation task 53 stores actual data stored in the camera memory 52 in the base memory 54 instead of temporary data, and generates activation data including the actual data.

  The communication task 51 repeatedly executes the start data transmission process until the start data for which the update completion flag of the base memory 54 is true is transmitted to the baseband microcomputer 23. Of course, even when the camera microcomputer 22 operates in a mode, an error or the like occurs in the camera microcomputer 22, and even when the camera microcomputer 22 operates in a different mode, the start band including the actual data stored in the base memory 54 is used. The microcomputer 23 can be operated in the same mode as the mode in which the camera microcomputer 22 is operated.

  FIG. 8 shows a time chart of the starting process from when the system control microcomputer 21 in the video camera 1 of FIG. 3 operates the camera microcomputer 22 and the baseband microcomputer 23 in the moving image shooting mode immediately after the power is turned on. In FIG. 8, times T1, T2, and T3 represented by the same reference numerals as those in FIG. 2 represent the same times as in FIG.

When the power button of the video camera 1 is turned on by the user at time t ₁₁ , the generation task 53 of the system control microcomputer 21, the camera microcomputer 22, and the baseband microcomputer 25 perform H / W and OS initialization processing. Start (start startup process). In the system control microcomputer 21, the communication task 51 may perform H / W or OS initialization processing instead of the generation task 53.

At time t ₁₂ after the elapse of time T1 from the time t _11, the system control microcomputer 21, the camera microcomputer 22, the baseband microcomputer 25 initializing processing of each H / W and OS is completed, generation task 53 starts data generation The process (FIG. 7) is started. At time t ₁₂ , the communication task 51 starts actual data acquisition processing (FIG. 5) and activation data transmission processing (FIG. 6).

In the camera microcomputer 22, T2 hours time t ₁₂ to the time t _13, processing corresponding to the real data acquisition process of the communication task 51 is performed. That is, the camera microcomputer 22 executes camera control data setting processing for setting the inside of the imaging block 12 in response to a control signal from the communication task 51 and returning actual data representing the result.

The baseband microcomputer 25, T3 hour time t ₁₂ to the time t _14, processing corresponding to the start data transmission processing of the communication task 51 is performed. That is, the baseband microcomputer 25 executes a startup data setting process for outputting a synchronization signal in the moving image shooting mode corresponding to the startup data from the communication task 51.

Therefore, at time t ₁₃ , actual data is acquired from the camera microcomputer 22 by the actual data acquisition process of the communication task 51, and writing to the camera memory 52 is completed. Then, the generation task 53 reads the actual data in the camera memory 52, updates the activation data in the base memory 54, sets an update completion flag, and the communication task 51 determines that all the temporary data has become actual data. by transmitting activation data to the baseband microcomputer 25, start data setting processing of a baseband microcomputer 25 and ends at time t _14.

After time t ₁₄ , the baseband microcomputer 25 can supply a synchronization signal corresponding to the moving image shooting mode to the camera microcomputer 22 and the display unit 15. Thus, the user can operate the video camera 1 in the moving image shooting mode (end of the activation process).

  From the above, the activation processing time in the video camera 1 in FIG. 3 is (T1 + T3) time as shown in FIG.

On the other hand, in the conventional startup process, as described with reference to FIGS. 1 and 2, the control for the camera microcomputer 22 is completed, and all the actual data representing the control result is acquired, and then the control for the baseband microcomputer 25 is performed. It generates activation data, since it will send, as indicated by a dotted line in FIG. 8, at time t ₁₃ to the camera control data setting process of the camera microcomputer 22 is terminated, so that the start data setting process is started . Therefore, the conventional activation processing time is (T1 + T2 + T3) time as shown in FIG.

  That is, in the start-up process by the video camera 1 in FIG. 3, since it is not necessary to wait for the camera control data communication process of the camera microcomputer 22 to end, the camera control data communication process is performed from the conventional start-up process time ((T1 + T3) time). It is possible to shorten the start-up processing time by the time T2 (the baseband microcomputer 23 can be operated quickly in the moving image shooting mode).

Incidentally, the start data setting processing of a baseband microcomputer 25 necessarily the camera control data setting process of the camera microcomputer 22 at the same time (at the time t ₁₂₎ need not to be started, the camera control data setting processing at time t ₁₃ (the camera microcomputer 22 If the time is started earlier than the time when the video camera 1 is started, the startup processing time of the video camera 1 can be shortened compared to the conventional startup processing. In other words, it can be said that the T2 time that is the shortening time of FIG. 8 is the maximum time that can be shortened.

  In FIG. 8, the time (T3 time) required for the start-up data setting process of the baseband microcomputer 25 is longer than the time (T2 time) required for the camera control data setting process of the camera microcomputer 22 (T2 <T3). Although an example is shown, when the time required for the start-up data setting process of the baseband microcomputer 25 is shorter than the time required for the camera control data setting process of the camera microcomputer 22, the result is as shown in FIG.

That is, when the time (T3 ′ time) required for the startup data setting process of the baseband microcomputer 25 is shorter than the time required for the camera control data setting process (T2 time) of the camera microcomputer 22 (T2> T3 ′), the camera microcomputer If all the actual data is not acquired from 22, the activation data stored in the base memory 54 does not become the activation data including all the actual data, and therefore the activation data transmission processing of the communication task 51 (and the corresponding baseband microcomputer) 23 is the shortest and ends at the same time as time t ₂₄ when the camera control data setting process ends.

  Accordingly, the activation processing time of the video camera 1 in FIG. 9 is (T1 + T2) time. On the other hand, the conventional activation processing time is (T1 + T2 + T3 ′) as shown in FIG. 9, and therefore the video camera 1 in FIG. 3 takes a maximum time for the activation data setting processing of the baseband microcomputer 25 (T3 ′). Time), the startup processing time can be shortened conventionally (the baseband microcomputer 23 can be operated quickly in the moving image shooting mode).

  In this embodiment, the video camera 1 operates (activates) in the moving image shooting mode immediately after the power is turned on, and when the power button of the video camera 1 is turned on, the camera microcomputer 22 and the baseband microcomputer 23 are animated. Although an example of quickly operating in the shooting mode has been described, the present invention is not limited to starting (operating) a plurality of microcomputers immediately after power-on.

  For example, after the video camera 1 is activated in the moving image shooting mode immediately after the power is turned on, when the mode switching button is operated by the user and, for example, the moving image reproduction mode is selected, the generation task 53 includes temporary data representing the moving image reproduction mode. Is generated and stored in the base memory 54. The communication task 51 controls the camera microcomputer 22 to operate in the moving image playback mode according to the operation of the mode switching button, and uses the start-up data including temporary data stored in the base memory 54 to use the baseband microcomputer 23. Is controlled to operate in the moving image playback mode.

  Similarly, the communication task 51 acquires actual data (result data) representing a control result obtained by operating the camera microcomputer 22 in the moving image reproduction mode, stores the actual data in the camera memory 52, and stores the actual data stored in the base memory 54. Startup data including data is supplied to the baseband microcomputer 23.

  Even in such a case, the communication task 51 starts the control for causing the baseband microcomputer 23 to operate in the moving image playback mode in accordance with the mode switching button using the startup data including temporary data. 23 can be quickly operated in the moving image reproduction mode.

  If only one mode is selected when the video camera 1 has only two modes, the next designated mode is only the other mode. Therefore, when one mode is selected, the other mode is selected. The start-up data including the temporary data can be stored in the base memory 54.

  In the above-described example, the case where the present invention is applied to the video camera 1 has been described. However, the present invention is not limited to a portable (recording) playback device such as a DVD, a CD (Compact Disc), or an MD. The present invention can be applied to an electronic device equipped with a plurality of microcomputers such as a still camera, a mobile phone, or a PDA (Personal Digital Assistant). In particular, it is effective when one microcomputer among a plurality of microcomputers mounted on an electronic device is operated using data obtained as a result of the operation of another microcomputer.

  Furthermore, in the above-described example, in order to simplify the explanation, the time required for the initialization processing of the hardware / OS and the OS performed by each of the system control microcomputer 21 (the generation task 53), the camera microcomputer 22, and the baseband microcomputer 25 is performed. Although (T1 time) is the same time, the time required for the initialization processing of the hardware and OS executed by each microcomputer may not be the same time.

  In the present specification, the steps described in the flowcharts are executed in parallel or individually even if they are not necessarily processed in time series, as well as processes performed in time series in the described order. It also includes processing.

It is a flowchart explaining the starting process of the conventional video camera. It is a time chart explaining the conventional starting process. It is a block diagram which shows the structural example of one Embodiment of the video camera to which this invention is applied. It is a block diagram which shows the functional structural example of the system control microcomputer 21 of FIG. 5 is a flowchart for explaining actual data acquisition processing of a communication task 51. 4 is a flowchart for explaining activation data transmission processing of a communication task 51. 10 is a flowchart for explaining activation data generation processing of a generation task 53. 3 is a time chart for explaining start-up processing in the video camera 1. 3 is a time chart for explaining start-up processing in the video camera 1.

Explanation of symbols

  1 video camera, 21 system control microcomputer, 22 camera microcomputer, 25 baseband microcomputer, 26 media control microcomputer, 51 communication task, 52 camera memory, 53 generation task, 54 base memory

Claims (4)

In an electronic device having at least first and second information processing means that operate in any one of a plurality of modes,
First storage means for storing temporary data representing a predetermined mode assumed as a mode when the first information processing means operates in response to a predetermined input;
While performing control to operate the first information processing means in a mode according to the predetermined input among the plurality of modes, using the temporary data stored in the first storage means, First control means for performing control to operate the second information processing means in the predetermined mode of the plurality of modes ;
Second storage means for storing result data representing a control result in which the first control means operates the first information processing means in a mode corresponding to a predetermined input;
Second control means for storing the result data stored in the second storage means in the first storage means instead of the temporary data;
With
The first control means operates the second information processing means in the same mode as the mode of the first information processing means using the result data stored in the first storage means. Do control
An electronic device characterized by that . The electronic apparatus according to claim 1 , wherein the second control unit further generates the temporary data and stores the temporary data in the first storage unit. First and second information processing means operating in any one of a plurality of modes, first and second storage means for storing predetermined data, and the first and second information processing means In a control method of an electronic device having at least first control means for controlling the first control means and second control means for controlling the first and second storage means ,
The first control means controls the first information processing means to operate in a mode corresponding to a predetermined input among the plurality of modes, and is stored in the first storage means. are, by using the temporary data representative of the predetermined mode contemplated as the mode when said first information processing unit is operated, the second information processing means, wherein the predetermined mode of the plurality of modes in have line control to operate,
The first control means acquires result data representing a control result obtained by operating the first information processing means in a mode corresponding to a predetermined input from the first information processing means, and stores the second storage. Memorize the means,
The second control means stores the result data stored in the second storage means in the first storage means instead of the temporary data,
The first control means operates the second information processing means in the same mode as the mode of the first information processing means using the result data stored in the first storage means. A method for controlling an electronic device, characterized by performing control. A computer that controls an electronic device having at least first and second information processing means that operate in any one of a plurality of modes, and first and second storage means that store predetermined data .
The first information processing means controls the operation of the first information processing means in a mode corresponding to a predetermined input of the plurality of modes, and stores the first information processing means stored in the first storage means. using the temporary data representative of the predetermined mode contemplated as mode when unit is operating, the second information processing means, have row control to operate in the predetermined mode of the plurality of modes,
Result data representing a control result obtained by operating the first information processing unit in a mode corresponding to a predetermined input is acquired from the first information processing unit and stored in the second storage unit;
The result data stored in the second storage means is stored in the first storage means instead of the temporary data,
Using the result data stored in the first storage means, the second information processing means is controlled to operate in the same mode as that of the first information processing means.
A program for executing steps .

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