JPWO2017104168A1 - Video recording / reproducing apparatus and activation method - Google Patents

Abstract

The processor (110) operates the first program, secures a first temporary storage area in a part of the work memory (120), stores screen data in the first temporary storage area, and displays the display device. 3, a start screen is displayed, the start of the second program is started by the first program, and a part of the work memory (120) that does not include the first temporary storage area is started by the second program. The first initialization area which is the area is initialized, the second temporary storage area is secured in the first initialization area, the screen data is stored, and the screen displayed on the display device 3 is changed to the second Is switched to the startup screen based on the screen data stored in the temporary storage area.

Description

  The present invention relates to a video recording / reproducing apparatus and a startup method, and more particularly to a video recording / reproducing apparatus and a startup method for displaying a startup screen during startup.

  In general, many video recording / reproducing apparatuses represented by a monitoring recorder have a function of outputting a startup screen indicating that the monitoring recorder is being started up on a connected display device when the power is turned on. The startup screen is used for the purpose of the user confirming that the video recording / playback apparatus is executing the startup process without failure. In particular, in a monitoring recorder, if there is a risk of failure, the recording function may not be operating normally. If the recording function is not operating normally, important scenes cannot be recorded, or basic performance such as inadequate evidence capacity due to time inconsistencies or the like cannot be satisfied. For this reason, it is very important for the monitoring recorder to indicate to the user that there is no failure.

  On the other hand, an OS (Operating System) represented by Linux or the like is generally used for an apparatus that executes a complicated program having a plurality of processing processes, such as a video recording / reproducing apparatus. The OS activation includes basic peripheral device initialization, activation of a boot loader for loading a kernel, and activation of a kernel executed thereafter. The output to the startup screen is generally performed by a boot loader from the viewpoint of being performed quickly.

In order to output the startup screen to the display device, generally, a step of initializing the output device and a step of securing an area called a frame buffer on the work memory and writing screen data are performed.
In order to output the start screen in the kernel after displaying the start screen with the boot loader, the above two steps must be performed again. However, when the frame buffer area is secured by the kernel, it is necessary for the kernel to initialize the entire work memory including the frame buffer area secured by the boot loader. For this reason, there is a time during which the startup screen cannot be output until the kernel finishes initialization of the work memory and the kernel secures the frame buffer area. Some output devices output black images to the monitor while the frame buffer area is released. When a black image is output, there is a problem that the user perceives a failure.

  For example, the image processing apparatus described in Patent Document 1 does not initialize the frame buffer area secured by the boot loader at the time of kernel startup in order to prevent a black screen from being output between boot loader startup and kernel startup. Tell only the address data. As a result, the startup screen can be output to the monitor without releasing the display data output by the boot loader even when the kernel is started.

JP2015-32216A

  However, since the image processing apparatus described in Patent Document 1 uses the frame buffer area secured by the boot loader in the kernel as it is, the application after the kernel startup must also use the frame buffer area secured by the boot loader. . In general, the method of accessing the work memory performed by the boot loader is different from the method of accessing the work memory performed by the kernel. For this reason, when an application that operates after the kernel is started accesses the frame buffer area secured by the boot loader, an additional program is required. This means that the advantage of development using the OS is lost.

  Further, in a device such as a surveillance recorder that needs to output a plurality of videos simultaneously or dynamically change the number of output videos, it is necessary to secure a relatively large frame buffer area. In such an apparatus, since the size of a necessary frame buffer area is not known in advance, the frame buffer area may be dynamically secured. However, when the frame buffer area secured by the boot loader is continuously used in the kernel, it is difficult to secure a large capacity area with limited functions of the boot loader, and dynamic change is not easy.

  Therefore, the present invention has been made to solve the above-described problem, and prevents a black image from being output during the start of the second program from the operation of the first program. An object of the present invention is to make it possible to easily access a temporary storage area secured during startup even after the startup of the second program.

  A video recording / playback apparatus according to an aspect of the present invention is a video recording / playback apparatus that displays a screen on a display device, and a processing unit that starts the video recording / playback apparatus; A main storage unit initialized by the processing unit; screen data of a startup screen displayed on the display device during startup of the video recording / playback device; and a first program operating during startup of the video recording / playback device And an auxiliary storage unit that stores a second program that is activated by the first program, and the processing unit operates the first program to be part of the main storage unit. A first temporary storage area is secured, the screen data is stored in the first temporary storage area, and the display device is activated based on the screen data stored in the first temporary storage area Display the screen The processing unit starts activation of the second program by the first program, and a part of the main storage unit that does not include the first temporary storage area by the second program. A first initialization area that is an area is initialized, and the processing unit secures a second temporary storage area in the first initialization area and stores the screen data in the second temporary storage area. Then, the screen displayed on the display device is changed from the startup screen based on the screen data stored in the first temporary storage area to the startup screen based on the screen data stored in the second temporary storage area. It is characterized by switching.

  A video recording / reproducing apparatus according to another aspect of the present invention is a video recording / reproducing apparatus for displaying a screen on a display device, and a processing unit that activates the video recording / reproducing apparatus, and the video recording / reproducing apparatus being activated A main storage unit initialized by the processing unit, first screen data of a first startup screen displayed on the display device during startup of the video recording / playback device, and startup of the video recording / playback device The second screen data of the second startup screen displayed on the display device, the first program that operates during startup of the video recording / playback device, and the second program that is started by the first program An auxiliary storage unit for storing a program, and the processing unit operates the first program to secure a first temporary storage area in a part of the main storage unit, and The first screen display is stored in the temporary storage area. And displaying the first start-up screen on the display device based on the first screen data stored in the first temporary storage area, and the processing unit is configured to display the first program. To start the second program, and the second program causes the main memory unit to start the first initialization area which is a part of the area that does not include the first temporary storage area. The processing unit secures a second temporary storage area in the first initialization area, stores the second screen data in the second temporary storage area, and stores the second screen data in the display device. The displayed screen is changed from the first startup screen based on the first screen data stored in the first temporary storage area to the second screen data stored in the second temporary storage area. Switching to a second startup screen based on .

  An activation method according to an aspect of the present invention is an activation method of a video recording / playback apparatus that displays a screen on a display device, and operates a first program to store a first temporary storage in a part of a main storage unit An area is secured, screen data is stored in the first temporary storage area, a startup screen is displayed on the display device based on the screen data stored in the first temporary storage area, and the first The first initialization area that is a part of the main storage unit that does not include the first temporary storage area is started by the second program. The second temporary storage area is secured in the first initialization area, the screen data is stored in the second temporary storage area, and the screen displayed on the display device is changed to the first display area. Screen data stored in one temporary storage area From the based startup screen, and switches on the startup screen based on screen data stored in the second temporary storage area.

  A start-up method according to another aspect of the present invention is a start-up method of a video recording / playback apparatus that displays a screen on a display device, and a first temporary program is operated in a part of a main storage unit by operating a first program. A storage area is secured, the first screen data is stored in the first temporary storage area, and the first display data is stored in the display device based on the first screen data stored in the first temporary storage area. Is displayed, the second program is started by the first program, and the second temporary program does not include the first temporary storage area in the main storage unit by the second program. A first initialization area which is a part area, a second temporary storage area is secured in the first initialization area, and second screen data is stored in the second temporary storage area The screen displayed on the display device is the first temporary recording. Switching from a first startup screen based on the first screen data stored in a region to a second startup screen based on the second screen data stored in the second temporary storage region, To do.

  According to one aspect of the present invention, the main memory is initialized in order for each part, and a temporary storage area is secured in the area where the initialization is completed, so that the second program is started from the operation of the first program. Thus, it is possible to prevent the black image from being output while the second program is started, and to easily access the temporary storage area secured during the startup even after the startup of the second program.

It is a block diagram which shows roughly the structure of the monitoring recorder which is a video recording / reproducing apparatus concerning Embodiment 1-3. 3 is a schematic diagram showing a configuration of an information storage unit in Embodiment 1. FIG. 4 is a flowchart showing a start screen display operation of the monitoring recorder according to the first embodiment. (A)-(D) are the schematic diagrams showing the area | region of the work memory in the starting screen display operation | movement of the monitoring recorder which concerns on Embodiment 1. FIG. 4 is a flowchart illustrating a frame buffer swap process according to the first embodiment. 6 is a schematic diagram showing a configuration of an information storage unit in Embodiments 2 and 3. FIG. 10 is a flowchart illustrating a frame buffer swap process according to the second embodiment. FIG. 3 is a block diagram schematically showing a hardware configuration of a processor in the first to third embodiments.

Embodiment 1 FIG.
Next, Embodiment 1 will be described with reference to the drawings. In the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic and ratios of dimensions and the like are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships or ratios are included between the drawings.

  FIG. 1 is a block diagram schematically showing a configuration of a monitoring recorder 100 which is a video recording / reproducing apparatus according to the first embodiment. In FIG. 1, a monitoring system 1 including a monitoring recorder 100 includes a plurality of cameras 2A, 2B, and 2C as monitoring cameras and a display device 3 as a video display device in addition to the monitoring recorder 100.

  The first camera 2A, the second camera 2B, and the third camera 2C are connected to the monitoring recorder 100. Note that the first camera 2A, the second camera 2B, and the third camera 2C are referred to as the camera 2 when it is not necessary to distinguish between them. The camera 2 transmits video data obtained by photographing the monitoring target to the monitoring recorder 100. For example, the camera 2 may be installed at a location away from the monitoring recorder 100.

  Although the number of cameras 2 is three here, it goes without saying that the number is not limited to three. For example, it may be one, two, or four or more. The connection between the camera 2 and the monitoring recorder 100 may be either a wired or wireless connection method as long as data can be exchanged, or a mixed connection method. Moreover, the connection via a network or another relay device may be used.

  The monitoring recorder 100 functions as a video recording / reproducing device that receives and records video data transmitted from the camera 2.

  The display device 3 is an output device connected to the monitoring recorder 100. The display device 3 displays various screens. For example, the display device 3 displays a recorded video based on the video data recorded on the monitoring recorder 100 or a current video based on video data generated by shooting by the camera 2.

  As shown in FIG. 1, the monitoring recorder 100 includes a processor 110 as a processing unit, a work memory 120 as a main storage unit (main storage device), and an information storage unit 130 as an auxiliary storage unit (auxiliary storage device). And a communication unit 140 and a connection unit 150.

  The processor 110 acquires and records video data from the camera 2 and outputs the video data to the display device 3. Further, the processor 110 activates the monitoring recorder 100.

For example, in the first embodiment, the processor 110 activates the monitoring recorder 100 in the following procedure.
First, the processor 110 operates the first program stored in the information storage unit 130 to secure a first temporary storage area in a part of the work memory 120, and stores the first temporary storage area in the first temporary storage area. The screen data stored in the information storage unit 130 is stored. Then, the processor 110 causes the display device 3 to display a startup screen based on the screen data stored in the first temporary storage area.

Next, the processor 110 starts activation of the second program stored in the information storage unit 130 by the first program, and the first temporary storage is performed in the work memory 120 by the second program. The first initialization area, which is a partial area not including the area, is initialized.
Next, the processor 110 secures a second temporary storage area in the first initialization area, and stores the screen data in the second temporary storage area. For example, the processor 110 stores the screen data in the second temporary storage area by copying the screen data stored in the first temporary storage area to the second temporary storage area. Then, the processor 110 changes the screen displayed on the display device 3 from the startup screen based on the screen data stored in the first temporary storage area to the startup screen based on the screen data stored in the second temporary storage area. Switch to.

  Then, after switching the screen displayed on the display device 3, the processor 110 initializes the remaining area of the work memory 120 excluding the first initialization area.

  The processor 110 includes an interface unit (hereinafter referred to as an I / F unit) 111, a display controller unit 112, a control unit 113, and a memory initialization unit 114.

The I / F unit 111 controls communication with the camera 2 via the communication unit 140 that is an interface for performing communication with the camera 2.
The display controller unit 112 controls communication with the display device 3 via the connection unit 150 that is an interface for performing communication with the display device 3.
The control unit 113 performs processing as a video recording / playback apparatus.
The memory initialization unit 114 initializes the work memory 120.

The work memory 120 is a memory used by the processor 110 as a work area. The work memory 120 is initialized by the processor 110 while the monitoring recorder 100 is activated.
The work memory 120 is, for example, a RAM (Random Access Memory). The processor 110 reads the boot loader, kernel, or application program from the work memory 120 and executes it to control the monitoring recorder 100.
The work memory 120 includes a frame buffer area that holds video data displayed on the display device 3 by the display controller unit 112. The processor 110 can designate a part of the area of the work memory 120 as a frame buffer area during processing of the boot loader and the kernel.

  The information storage unit 130 is a storage unit that stores a program and data that are executed when the power of the monitoring recorder 100 is turned on and the processor 110 starts the startup process. As shown in FIG. 2, in the first embodiment, the information storage unit 130 stores a boot loader 131, boot loader start screen data 132 indicating a screen displayed by the boot loader 131, a kernel 133, and a monitoring recorder application 134. Has been.

  The boot loader 131 is a program that operates while the monitoring recorder 100 is activated. Then, the boot loader 131 activates the kernel 133. For example, the boot loader 131 performs address designation of the kernel 133 to be executed, initialization of the work memory 120, parameter setting of the display controller unit 112, and the like. Furthermore, the boot loader 131 is limited in function as compared with the kernel 133, and generally cannot perform a plurality of processes in parallel.

  The boot loader startup screen data 132 is screen data of a startup screen displayed on the display device 3 during startup of the monitoring recorder 100.

The kernel 133 is a program activated by the boot loader. The kernel 133 is basic software for managing the entire monitoring recorder 100.
In the present embodiment, the boot loader 131 and the kernel 133 determine in advance which area of the work memory 120 is to be initialized.

Generally, the memory management method differs between the boot loader 131 and the kernel 133. Therefore, normally, when the kernel 133 is activated, the kernel 133 initializes the work memory 120 so that the entire memory of the work memory 120 can be managed.
When the kernel 133 does not execute initialization of the work memory 120, the kernel 133 cannot perform memory management by a normal method. For this reason, when the kernel 133 accesses an area where initialization has not been executed, a program or the like using a dedicated method is required.

  The monitoring recorder application 134 is, for example, a program that receives the video data transmitted from the camera 2 and records it in the information storage unit 130. The monitoring recorder application 134 can start processing after the kernel 133 is activated.

  The monitoring recorder application 134 does not need to record the video data transmitted from the camera 2 in the information storage unit 130. For example, a storage medium such as a flash memory or an HDD (Hard Disk Drive) connected to the monitoring recorder 100 But you can.

The communication unit 140 is an interface that performs communication with the camera 2.
The connection unit 150 is an interface that performs communication with the display device 3.

Next, the operation of the monitoring recorder 100 according to the first embodiment, in other words, the startup screen display method according to the first embodiment will be described.
FIG. 3 is a flowchart showing the startup screen display operation of the monitoring recorder 100 according to the first embodiment. 4A to 4D are schematic diagrams showing areas of the work memory 120 during the start-up screen display operation of the monitoring recorder 100 according to the first embodiment.

After the monitoring recorder 100 is powered on, the control unit 113 executes the boot loader 131 (S10).
Next, as shown in FIG. 4A, the memory initialization unit 114 secures a boot loader frame buffer area 121 used by the boot loader 131 on the work memory 120 (S11).

  The control unit 113 copies predetermined boot loader activation screen data 132 stored in the information storage unit 130 to the reserved boot loader frame buffer area 121. Then, the control unit 113 notifies the display controller unit 112 of the address of the boot loader frame buffer area 121, and the display controller unit 112 outputs the boot loader start screen data 132 to the display device 3 (S12).

  Thereafter, the control unit 113 executes other processing related to the boot loader 131, reads the kernel 133, and starts the kernel 133 (S13).

  When starting the kernel 133, the control unit 113 executes a frame buffer swap process (S14). This process will be described later with reference to FIG.

  Then, the control unit 113 completes the startup process of the kernel 133 and executes the monitoring recorder application 134 (S15).

FIG. 5 is a flowchart showing the frame buffer swap processing.
When the frame buffer swap process is started, the memory initialization unit 114 initializes the work memory 120 by the kernel 133 as shown in FIG. The process is executed on the conversion area 122 (S20). The first initialization area 122 has a capacity that can include an area used for the kernel frame buffer area 123. Furthermore, the first initialization area 122 has a capacity including a work memory area necessary for the kernel 133 to start. The work memory area necessary for starting the kernel 133 is, for example, an area used for parameter setting for the I / F unit 111 or network setting for the camera 2 or the like.
The first initialization area 122 needs to be an area different from the boot loader frame buffer area 121.

  When the first initialization area 122 is secured, the control unit 113 secures the kernel frame buffer area 123 in the first initialization area 122 as shown in FIG. 4C (S21). .

  When the kernel frame buffer area 123 is secured in the first initialization area 122, the control unit 113 first converts the boot loader startup screen data written in the boot loader frame buffer area 121 into the kernel frame buffer area 123. (S22). Up to this point, the boot loader start screen data written in the boot loader frame buffer area 121 has been read and the screen is output to the display device 3.

  After the data copy to the kernel frame buffer area 123 is completed, the control unit 113 switches the addressing of the frame buffer area displayed by the display controller unit 112 from the boot loader frame buffer area 121 to the kernel frame buffer area 123. (S23). The switching of the frame buffer area is a process in which the control unit 113 notifies the display controller unit 112 of the address of the frame buffer area and performs the switching. For this reason, it is possible to show the user that the startup screen output by the boot loader 131 is continuously output to the display device 3 without displaying a black screen.

  Since the boot loader frame buffer area 121 is not used after switching the frame buffer, the memory initialization unit 114 uses the first initialization area 122 of the work memory 120 as shown in FIG. The second initialization area 124, which is the remaining area, is initialized (S24). The second initialization area 124 includes a boot loader frame buffer area 121. This completes the frame buffer swap process.

  By performing the frame buffer swap process, the kernel 133 can perform the same memory management as when the normal initialization process is executed on the work memory 120. Therefore, the monitoring recorder application 134 can perform display without being conscious of the boot loader frame buffer area 121 used in the boot screen display by the boot loader 131. In addition to the display function, the monitoring recorder application 134 can access a memory-managed area without being aware of the process at the time of initialization of the work memory 120.

  In the frame buffer swap processing described above, the control unit 113 copies the boot loader startup screen data written in the boot loader frame buffer region 121 to the kernel frame buffer region 123. Is not limited to such an example. For example, the control unit 113 may write boot loader startup screen data stored in the information storage unit 130 into the kernel frame buffer area 123.

According to the monitoring recorder 100 according to Embodiment 1 described above, the following effects (1) to (4) can be obtained.
(1) The monitoring recorder 100 can output the start screen displayed by the boot loader 131 without outputting a black screen even when the kernel 133 is started.
(2) The monitoring recorder 100 can continue to output the same screen as the boot screen displayed by the boot loader 131 even when the kernel 133 is booted.
(3) Since the monitor recorder 100 can use the frame buffer area secured by the kernel 133 that executes the monitor recorder application 134 from the frame buffer area secured by the boot loader 131 with limited functions, for example, the dynamic It is possible to easily realize advanced processing such as enlargement or reduction of the frame buffer area.
(4) Since the monitoring recorder 100 can use the frame buffer area secured by the kernel 133 that executes the monitoring recorder application 134, the access to the work memory 120 is not subject to unusual restrictions on the work memory 120. Can be accessed.

Embodiment 2. FIG.
The video recording / reproducing apparatus in the second embodiment will be described below.
In the following description, the description of the same parts as those in the first embodiment will be omitted or simplified, and the same or corresponding elements as those in the first embodiment will be denoted by the same reference numerals.

As shown in FIG. 1, the monitoring recorder 200 according to the second embodiment includes a processor 210, a work memory 120, an information storage unit 230, a communication unit 140, and a connection unit 150.
The monitoring recorder 200 according to the second embodiment is configured in the same manner as the monitoring recorder 100 according to the first embodiment except for the processor 210 and the information storage unit 230.

  In the information storage unit 230 in the second embodiment, as shown in FIG. 6, in addition to the boot loader 131, the boot loader start screen data 132, the kernel 133, and the monitoring recorder application 134, the kernel start screen data displayed by the kernel 133 is displayed. 235 has been added.

  The kernel startup screen data 235 is screen data of a startup screen displayed on the display device 3 during startup of the monitoring recorder 200. In the second embodiment, the startup screen displayed on the display device 3 based on the kernel startup screen data 235 is the same screen as the startup screen displayed on the display device 3 based on the boot loader startup screen data 132. It is a screen recognized by the user.

  The processor 210 acquires and records video data from the camera 2 and outputs the video data to the display device 3. Further, the processor 210 activates the monitoring recorder 200.

In the second embodiment, the processor 210 activates the monitoring recorder 200 in the following procedure.
The processor 210 operates the first program stored in the information storage unit 230, secures a first temporary storage area in a part of the work memory 120, and stores information in the first temporary storage area. The first screen data stored in the storage unit 230 is stored. Then, the processor 210 causes the display device 3 to display the first startup screen based on the first screen data stored in the first temporary storage area.

  Next, the processor 210 starts activation of the second program stored in the information storage unit 230 by the first program, and the first temporary storage is performed in the work memory 120 by the second program. The first initialization area, which is a partial area not including the area, is initialized.

  Next, the processor 210 communicates with the communication device 3 via the connection unit 150 and acquires information on the display device 3. Here, the information of the display device 3 includes information on a video format (for example, displayable resolution, color depth, and frame rate). In general, a necessary temporary storage area can be calculated from video format information. For this reason, it can be said that the information acquired from the display device 3 is information for determining a necessary temporary storage area (second temporary storage area). The first program is a program for reading the second program. For this reason, in general, the first program often does not include a process including a plurality of steps such as acquiring information from the display device 3 via an interface such as the connection unit 150.

  Next, the processor 210 secures a second temporary storage area in the first initialization area based on the information acquired from the display device 3, and stores the information storage unit 230 in the second temporary storage area. The second screen data stored in is stored. At this time, if the size of the second temporary storage area is different from the size of the second screen data, the display controller unit 112 adapts the second screen data to the second temporary storage area. It is also possible to change the size and copy the changed data to the second temporary storage area.

  And the processor 210 memorize | stored the screen displayed on the display apparatus 3 in the 2nd temporary storage area from the 1st starting screen based on the 1st screen data memorize | stored in the 1st temporary storage area. Switch to the second start-up screen based on the second screen data.

  Then, after switching the screen displayed on the display device 3, the processor 210 initializes the remaining area of the work memory 120 excluding the first initialization area.

The processor 210 in the second embodiment includes an I / F unit 111, a display controller unit 112, a control unit 213, and a memory initialization unit 114.
The processor 210 in the second embodiment is configured in the same manner as the processor 110 in the first embodiment except for the control unit 213.

  The control unit 213 according to the second embodiment is different from the first embodiment except that the boot loader startup screen data stored in the information storage unit 230 is written in the kernel frame buffer area 123 in the frame buffer swap processing. It is configured in the same way.

FIG. 7 is a flowchart showing the frame buffer swap processing according to the second embodiment.
Of the steps shown in FIG. 7, steps similar to the steps shown in FIG. 5 are denoted by the same reference numerals as those in FIG. 5.

  The process of step S20 in FIG. 7 is the same as the process of step S20 shown in FIG. However, after step S20 in FIG. 7, the process proceeds to step S31.

In step S <b> 31, the control unit 213 acquires information stored in the display device 3.
Next, the control unit 213 secures the kernel frame buffer area 123 based on the acquired information (S32).

Then, the control unit 213 copies the kernel startup screen data 235 stored in the information storage unit 230 to the kernel frame buffer area 123 (S33). Then, the process proceeds to step S23.
The processing in steps S23 and S24 in FIG. 7 is the same as the processing in steps S23 and S24 in FIG.

  For example, when the size of the boot loader frame buffer area 121 used for display by the boot loader 131 is different from the size of the kernel frame buffer area 123 used by the kernel 133 for display, a normal image cannot be output by simple copying. In such a case, the control unit 213 or the display controller unit 112 needs to analyze the size of the data written in the kernel frame buffer area 123 and perform image processing such as enlargement or reduction so that the data can be displayed normally. There is.

  According to the second embodiment, the boot loader start screen data 235 displayed on the display device 3 in the same manner as the boot loader start screen data 132 displayed on the boot loader 131 is prepared in advance, so that the boot loader start screen is displayed. Even if the size of the data 132 is different from the size of the kernel startup screen data 235, the kernel 133 can output the same image as the boot loader 131 only by copying the data.

  According to the second embodiment described above, the following effect (5) can be obtained in addition to the effects (1) to (4) in the first embodiment.

  (5) Even when the size of the boot loader frame buffer area 121 and the size of the kernel frame buffer area 123 are different, the frame buffer can be switched easily and without a sense of incongruity.

Embodiment 3 FIG.
The video recording / reproducing apparatus according to the third embodiment will be described below.
In the following description, the description of the same parts as those in the first or second embodiment will be omitted or simplified, and the same or corresponding elements as those in the first or second embodiment will be denoted by the same reference numerals.

As shown in FIG. 1, the monitoring recorder 300 according to the third embodiment includes a processor 210, a work memory 120, an information storage unit 330, a communication unit 140, and a connection unit 150.
The monitoring recorder 300 according to the third embodiment is configured in the same manner as the monitoring recorder 200 according to the second embodiment, except for the information storage unit 330.

  As shown in FIG. 6, the information storage unit 330 according to the third embodiment except that the kernel boot screen data 335 is stored instead of the kernel boot screen data 235 according to the second embodiment. Thus, the configuration is the same as that of the information storage unit 230 in the second embodiment.

  The kernel startup screen data 335 is screen data of a startup screen displayed on the display device 3 during startup of the monitoring recorder 300. In the third embodiment, the startup screen displayed on the display device 3 based on the kernel startup screen data 335 is different from the startup screen displayed on the display device 3 based on the boot loader startup screen data 132. This is a screen recognized by the user.

  In the third embodiment, the control unit 213 copies the kernel startup screen data 335 to the kernel frame buffer area 123 in step S32 of FIG. For this reason, when the startup screen is displayed on the display device 3, the user can recognize that the processing has shifted from the startup of the boot loader 131 to the startup of the kernel 133. Note that since the interval of the display on the display device 3 switching from the boot loader start screen data 132 to the kernel start screen data 335 is very short, it is possible to prevent the user from misidentifying that the monitoring recorder 100 has failed.

  As described above, according to the third embodiment, in addition to the effects (1) to (5) in the first embodiment, the following effects (6) and (7) can be obtained. .

(6) Since the startup image to be displayed on the display device 3 can be switched from the boot loader startup screen data 132 to the kernel startup screen data 335 during the startup of the kernel 133, the startup stage of the monitoring recorder 100 is shown to the user Can do.
(7) Since the start-up image displayed on the display device 3 is switched, it is possible to prevent the user from recognizing that the operation has stopped while the monitor recorder 100 is being displayed.

  Some or all of the processors 110 and 210 described above are, for example, a processor such as a single circuit, a composite circuit, or a programmed CPU (Central Processing Unit) as shown in FIG. , A processor programmed in parallel, an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA). Each part in the processors 110 and 210 may be configured by the processing circuit 170.

  Further, a part or all of the processors 110 and 210 can be configured by one or a plurality of CPUs 172 that execute a program stored in the memory 171 as shown in FIG. The memory 171 here corresponds to the work memory 120. Such a program may be provided through a network, or may be provided by being recorded on a recording medium.

  In particular, in the first to third embodiments, the function of the memory initialization unit 114 may be realized only by hardware resources such as an electronic circuit, or may be realized by cooperation of hardware resources and software resources. Good. When realized by the cooperation of hardware resources and software resources, the function of the memory initialization unit 114 is realized by, for example, the computer executing a corresponding computer program. More specifically, the function of the memory initialization unit 114 is realized by reading a computer program stored in a storage medium such as a ROM into a main storage device such as a RAM and executing it by the CPU. The computer program may be provided by being stored in a computer-readable storage medium such as an optical disk, or may be provided via a communication circuit such as the Internet.

  In addition, the present invention is not limited to the above-described first to third embodiments, and can be modified in various ways within the scope not departing from the gist of the present invention.

  The apparatus to which the present invention is applicable is not limited to a video recording / reproducing apparatus such as a surveillance recorder. As long as the device has a function of displaying a start-up screen on the connected display device 3 when the system is started, a video recording / playback device other than the monitoring recorder, a television receiver having a recording / playback function, a personal computer, The present invention can be applied to various devices such as a printer having a video storage printing function, a portable information terminal such as a smartphone or a tablet terminal, and a game machine.

  Further, the present invention is not limited to the number of work memories 120 necessary for the configuration. Although the case where there is one work memory 120 has been described in the first to third embodiments, for example, there may be two work memories 120. In this case, the frame buffer area used by the boot loader 131 can be secured in one work memory 120, and the frame buffer area used by the kernel 133 can be secured in the other work memory.

  In the present invention, the number of display devices 3 required for the configuration is not limited. In Embodiments 1 to 3, the case where there is one display device 3 has been described. However, for example, there may be two display devices 3. In that case, it is possible to display separate activation images on each display device 3 by holding a plurality of activation screen data displayed on the display device 3 by the information storage units 130, 230, and 330.

  DESCRIPTION OF SYMBOLS 1 Monitoring system, 2 Cameras, 3 Display apparatus, 100,200,300 Monitoring recorder, 110,210 Processor, 111 I / F part, 112 Display controller part, 113,213 Control part, 114 Memory initialization part, 120 Work memory , 130, 230, 330 Information storage unit, 140 communication unit, 150 connection unit.

A video recording / playback apparatus according to an aspect of the present invention is a video recording / playback apparatus that displays a screen on a display device, and a processing unit that starts the video recording / playback apparatus; A main memory initialized by the processing unit; first screen data of a first startup screen displayed on the display device during startup of the video recording / playback device; and during startup of the video recording / playback device Second screen data of a second startup screen displayed on the display device, a first program that operates during startup of the video recording / playback device, and a second program that is started by the first program An auxiliary storage unit that stores the first temporary storage area in a part of the main storage unit by operating the first program, and the first temporary storage unit The first screen data is stored in a storage area. And displaying the first start-up screen on the display device based on the first screen data stored in the first temporary storage area, and the processing unit is executed by the first program. Starting the second program and initializing a first initialization area, which is a part of the main storage unit that does not include the first temporary storage area, by the second program The processing unit secures a second temporary storage area in the first initialization area, stores the second screen data in the second temporary storage area, and displays the second screen data on the display device. From the first startup screen based on the first screen data stored in the first temporary storage area, based on the second screen data stored in the second temporary storage area Switching to the second startup screen

An activation method according to an aspect of the present invention is an activation method of a video recording / playback apparatus that displays a screen on a display device, and operates a first program to store a first temporary storage in a part of a main storage unit. An area is reserved, the first screen data is stored in the first temporary storage area, and the first screen data stored in the first temporary storage area is A part of the main storage unit that does not include the first temporary storage area is displayed by displaying the start screen, starting the second program by the first program, and starting the second program by the first program. The first initialization area, which is a first area, is initialized, a second temporary storage area is secured in the first initialization area, and the second temporary storage area is different from the first screen data . 2 screen data is stored and displayed on the display device. The second screen based on the second screen data stored in the second temporary storage area is changed from the first startup screen based on the first screen data stored in the first temporary storage area. It is characterized by switching to the startup screen.

Claims (10)

A video recording / reproducing device for displaying a screen on a display device,
A processing unit for starting the video recording / reproducing apparatus;
A main storage unit that is initialized by the processing unit during startup of the video recording / reproducing device;
Screen data of a startup screen displayed on the display device during startup of the video recording / playback device, a first program operating during startup of the video recording / playback device, and a first program started by the first program An auxiliary storage unit for storing two programs,
The processing unit operates the first program, secures a first temporary storage area in a part of the main storage unit, stores the screen data in the first temporary storage area, Based on the screen data stored in the first temporary storage area, display the startup screen on the display device,
The processing unit starts activation of the second program by the first program, and a part of the main storage unit that does not include the first temporary storage area by the second program. Initialize the first initialization area, which is an area,
The processing unit secures a second temporary storage area in the first initialization area, stores the screen data in the second temporary storage area, and displays a screen displayed on the display device. A video recording / reproducing apparatus that switches from a startup screen based on screen data stored in the first temporary storage area to a startup screen based on screen data stored in the second temporary storage area. The video recording / reproducing apparatus according to claim 1, wherein the processing unit copies screen data stored in the first temporary storage area to the second temporary storage area. A video recording / reproducing device for displaying a screen on a display device,
A processing unit for starting the video recording / reproducing apparatus;
A main storage unit that is initialized by the processing unit during startup of the video recording / reproducing device;
First screen data of a first startup screen displayed on the display device during startup of the video recording / playback device, and second startup screen displayed on the display device during startup of the video recording / playback device A second screen data, a first program that operates during startup of the video recording / playback device, and an auxiliary storage unit that stores a second program started by the first program,
The processing unit operates the first program, secures a first temporary storage area in a part of the main storage unit, and stores the first screen data in the first temporary storage area. Then, based on the first screen data stored in the first temporary storage area, the first startup screen is displayed on the display device,
The processing unit starts activation of the second program by the first program, and a part of the main storage unit that does not include the first temporary storage area by the second program. Initialize the first initialization area, which is an area,
The processing unit secures a second temporary storage area in the first initialization area, stores the second screen data in the second temporary storage area, and displays the second screen data on the display device. The second screen based on the second screen data stored in the second temporary storage area is changed from the first startup screen based on the first screen data stored in the first temporary storage area. A video recording / playback apparatus characterized by switching to the start-up screen. The processing unit communicates with the display device by the second program, and secures the second temporary storage area based on information stored in the display device. The video recording / reproducing apparatus described in 1. 5. The video recording according to claim 3, wherein the processing unit changes the size of the second screen data to a size suitable for the second temporary storage area by the second program. Playback device. The second startup screen is a screen that is recognized as the same screen as the first startup screen when displayed on the display device. 6. The video recording / reproducing apparatus as described. 6. The screen according to claim 3, wherein the second startup screen is a screen that is recognized as a screen different from the first startup screen when displayed on the display device. The video recording / reproducing apparatus described in 1. The said processing part initializes the remaining area | regions of the said main memory part except the said 1st initialization area | region after the screen displayed on the said display apparatus is switched. The video recording / reproducing apparatus according to claim 1. A method of starting a video recording / playback device for displaying a screen on a display device,
Operate the first program, secure a first temporary storage area in a part of the main storage unit, store screen data in the first temporary storage area,
Based on the screen data stored in the first temporary storage area, display a startup screen on the display device,
The second program is started by the first program, and the first program is a part of the main storage unit that does not include the first temporary storage area. Initialize the initialization area,
Securing a second temporary storage area in the first initialization area, storing the screen data in the second temporary storage area;
Switching the screen displayed on the display device from a startup screen based on the screen data stored in the first temporary storage area to a startup screen based on the screen data stored in the second temporary storage area. The starting method characterized. A method of starting a video recording / playback device for displaying a screen on a display device,
Operate the first program, secure a first temporary storage area in a part of the main storage unit, store the first screen data in the first temporary storage area,
Based on the first screen data stored in the first temporary storage area, the first startup screen is displayed on the display device,
The second program is started by the first program, and the first program is a part of the main storage unit that does not include the first temporary storage area. Initialize the initialization area,
Securing a second temporary storage area in the first initialization area, storing the second screen data in the second temporary storage area;
The screen displayed on the display device is changed from the first startup screen based on the first screen data stored in the first temporary storage area to the second temporary storage area stored in the second temporary storage area. A startup method characterized by switching to a second startup screen based on the screen data.

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