JP2013030847A - Data recording device and its control method - Google Patents

Abstract

Data recorded on a plurality of recording media by relay recording is prevented from being transferred to different destinations or only partially transmitted.
A data recording apparatus in which a plurality of recording media can be attached / detached uses a recording medium mounted on a first medium mounting unit and a recording medium mounted on a second medium mounting unit to relay data. Make a record. The data recording apparatus has a wireless communication function in which both of the recording media mounted on the first and second medium mounting portions transmit data wirelessly, and the data transmission destination by the wireless communication function is the same. If it is determined that the condition is satisfied, and if it is not determined that the condition is satisfied, execution of the wireless communication function is prohibited during execution of the relay recording, and if it is determined that the condition is satisfied Permits the execution of the wireless communication function during the execution of the relay recording.
[Selection] Figure 5

Description

  The present invention relates to a data recording apparatus having a relay recording function for recording data in succession on a plurality of memory cards, and a control method therefor.

  As a data recording apparatus having a relay recording function for recording data successively on a plurality of memory cards, a video camera having a relay recording function for continuing moving image recording across a plurality of recording media has been commercialized. In this type of video camera, for example, two memory cards can be mounted simultaneously. When the relay recording function is enabled, moving images and audio are continuously recorded on these two memory cards.

  On the other hand, according to Patent Document 1, a technique relating to a memory card having wireless communication means, that is, a memory card with a wireless function is described. For example, when a file having a specific file name is recorded in a memory card, a memory card with a wireless function that automatically wirelessly transmits the file to a transmission destination set in advance in the memory card has been commercialized. Yes.

JP 2002-009690 A

  In a video camera having two or more memory card interfaces for attaching / detaching a memory card and having the above-described relay recording function, the following problems arise when a memory function-equipped memory card is attached.

  For example, consider a case where one of the memory cards attached to the video camera is a memory card with a wireless function and the other is a memory card without a wireless function. In this case, the data recorded on the memory card with wireless function is transmitted, but the data recorded on the memory card without wireless function is not transmitted. Therefore, if relay recording is performed in the above case, only a part of the scene is wirelessly transmitted. Even if the memory card used for relay recording is both a memory card with a wireless function, if the destination set for each is different, the scene is divided and transmitted to different destinations by executing relay recording. Will end up.

  The present invention has been made in view of the above problems, and prevents data recorded on a plurality of recording media by relay recording from being transferred to different transmission destinations or only partially transmitted. The purpose is to do.

In order to achieve the above object, an image recording apparatus according to an aspect of the present invention has the following arrangement. That is,
A data recording apparatus in which a plurality of recording media can be attached and detached,
A recording means for performing relay recording of data using a recording medium mounted on the first medium mounting section and a recording medium mounted on the second medium mounting section;
The condition that both of the recording media mounted on the first and second medium mounting portions have a wireless communication function for transmitting data wirelessly, and the data transmission destination by the wireless communication function is the same. A determination means for determining whether or not the user is satisfied;
When it is not determined that the condition is satisfied, execution of the wireless communication function is prohibited during execution of the relay recording, and when it is determined that the condition is satisfied, the wireless communication during execution of the relay recording is prohibited. Control means for permitting execution of the function.

  According to the present invention, it is possible to prevent data recorded on a plurality of recording media by relay recording from being transferred to different transmission destinations or only partially transmitted.

The figure explaining the structural example of the video camera by embodiment. The figure explaining a memory card with a wireless function. The figure explaining the data transfer from a memory card with a wireless function to a server. The figure explaining relay recording. The flowchart explaining the process by 1st Embodiment. The flowchart explaining the process by 2nd Embodiment. The flowchart explaining the process by 3rd Embodiment.

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

(First embodiment)
<Video camera configuration>
FIG. 1 shows a configuration block diagram of a digital video camera which is an example of a data recording apparatus according to the present embodiment.
A lens unit 101 includes a fixed lens group for focusing, a variable power lens group, a stop, and a correction lens group. The correction lens group has both a function of correcting the imaging position moved by the movement of the variable power lens group and a function of performing focus adjustment. Reference numeral 102 denotes an image sensor that captures a subject, converts an optical image into an electrical signal, and acquires video data. A camera signal processing circuit 103 performs image processing such as predetermined color conversion processing and reduction processing on the electrical signal generated by the image sensor 102 and outputs image data suitable for the output destination.

  Reference numeral 105 denotes a video signal processing circuit which receives image data from the camera signal processing circuit 103 and the compression / decompression circuit 106 described later, performs image processing suitable for each block, and outputs it. Further, the video signal processing circuit 105 can superimpose and display the bitmap and the display of the device status, warning, various setting screens, and the like.

  Reference numeral 106 denotes a compression / decompression circuit, which compresses image data by the MPEG2 (Moving Picture Experts Group phase 2) method and writes the compressed video data to a memory 114 described later via a bus 121 described later. The compression / decompression circuit 106 also has a function of reading the compressed video data stored in the memory 114, reproducing it as image data, and outputting it to the video signal processing circuit.

  A microcomputer 111 controls the entire system in the video camera of this embodiment. A flash ROM 113 is a rewritable nonvolatile memory that stores programs executed by the microcomputer 111 and various parameters. Reference numeral 114 denotes a memory, which is a volatile memory used as a work area by the microcomputer 111, the compression / decompression circuit 106, and the like. Reference numeral 115 denotes a memory card interface (hereinafter referred to as a card I / F), which constitutes a medium loading unit for detachably loading a recording medium on a video camera. Reference numeral 116 denotes a memory card as an example of a recording medium. The card I / F 115 transmits / receives commands and data to / from the installed memory card 116. The memory card 116 is a card-type memory card such as an SD card, for example, and is a recording medium for recording the compressed video data generated by the compression / decompression circuit 106 in accordance with a predetermined format compatible with a computer such as a FAT file system. is there.

  Reference numeral 117 denotes a memory card interface (hereinafter referred to as a card I / F), and reference numeral 118 denotes a memory card, which has the same configuration as the card I / F 115 and the memory card 116, respectively. The memory cards 116 and 118 that can be attached to the card I / Fs 115 and 117 include a memory card with a wireless function (referred to as a wireless memory card 201) described later. As described above, in the present embodiment, a configuration in which the first medium mounting unit and the second medium mounting unit are provided and relay recording is performed between the memory cards mounted in these medium mounting units will be described. There may be three or more medium mounting portions.

  Reference numeral 107 denotes a liquid crystal panel for receiving and displaying image data from the video signal processing circuit 105. Although not specifically shown, an external input / output path such as a microphone unit and a speaker is also provided for audio, and is compressed and multiplexed by the compression / decompression circuit 106 together with the image. Reference numeral 112 denotes a group of operation switches for the user to input operations. The operation switch group 112 is also provided with a switch for selecting a camera mode mainly for camera shooting, a playback mode for mainly playback, and a power-off mode for turning off the power. Reference numeral 121 denotes a bus, which connects the above-described units so that they can communicate with each other.

<About memory card with wireless function>
Next, a memory card with a wireless function will be described with reference to FIG.
Reference numeral 201 denotes a memory card with a wireless function (hereinafter referred to as wireless memory card 201). An external interface unit 202 is an interface for connecting to and communicating with the card I / Fs 115 and 116. A control unit 203 controls the entire wireless memory card 201. A memory unit 204 is a nonvolatile memory that records data received from the outside. Reference numeral 205 denotes a wireless communication unit that performs data transfer with devices, servers, and the like that can be wirelessly connected in accordance with instructions from the control unit 203. Reference numeral 206 denotes an antenna for transmitting and receiving radio waves.

In the wireless memory card 201, the following functions and operations are realized by the control unit 203.
When an inquiry for determining whether or not the memory card has a wireless function is received from the host side via the external interface unit 202, the wireless memory card 201 indicates that it is a memory card with a wireless function. Notify Note that the host may receive the model name and ID of the wireless memory card, and determine whether or not the memory card has a wireless function.
The destination for transmitting data via the wireless communication unit 205 and the antenna 206 is recorded in the memory unit 204. Note that the wireless memory card 201 receives the transmission destination from the host side via the external interface unit 202 and sets it in its own device. This transmission destination is designated by the user using a compatible device such as a personal computer and dedicated application software.
The set transmission destination can be read on the host side via the external interface unit 202. Therefore, the video camera side can also know where the transmission destination of the inserted wireless memory card 201 is.

  Further, the control unit 203 analyzes data recorded in the memory unit 204 via the external interface unit 202. The control unit 203 automatically performs file transfer to the transmission destination recorded in the memory unit 204 when the file name of the data to be recorded satisfies a predetermined condition. Here, it is assumed that the predetermined condition is a file name whose extension indicates image information such as JPG and MPG. The directory may be a part of the predetermined condition. Furthermore, wireless communication can be permitted or prohibited on the host side via the external interface unit 202.

  A video camera and a server equipped with the above-described memory card with a wireless function will be described with reference to FIG. In FIG. 3, 301 is a network and 302 is an access point. An access point 302 is a radio wave repeater for communication connection between terminals. Reference numeral 303 denotes the video camera described with reference to FIG. Reference numerals 304 and 305 denote servers connected to the network 301.

  When the wireless memory card 201 is attached to the video camera 303, the wireless memory card 201 is connected to the network 301 via the access point 302. For example, when the transmission destination is set in the server 304 and image recording is performed, the image file is transmitted to the server 304 by the automatic transmission function of the wireless memory card 201. Similarly, the image file is transmitted to the server 305 in the wireless memory card 201 whose transmission destination is set to the server 305. Note that the configuration shown in FIG. 3 is an example. For example, the image file may be transmitted from the video camera 303 to a specific server, and the specific server may transfer the image file to a server corresponding to the recording destination.

<About relay recording>
Next, relay recording by the video camera of this embodiment will be described with reference to FIG. In FIG. 4, T1, T2, and T3 are times, and 401 and 402 are the above-mentioned compressed video data. In the example of FIG. 4, the video camera starts moving image recording at time T1, and first records compressed video data 401 on the memory card A (for example, the memory card 116). Since the remaining amount of the memory card A is exhausted at the time T2, but no recording stop instruction is given, the video camera continues to record the compressed video data on the memory card B (for example, the memory card 118). Thus, the compressed video data 402 that is a continuation of the compressed video data 401 is recorded on the memory card B. As described above, in the relay recording of the present embodiment, when the remaining amount of the memory card becomes equal to or less than the predetermined value, the recording of the compressed video data to the other memory card is continued without stopping the moving image recording. Note that whether or not to perform relay recording can be set through a user operation from a menu or the like.

  Here, for example, when two wireless memory cards 201 are mounted on the video camera 303, the transmission destination of one wireless memory card is different from the server 304, and the transmission destination of the other wireless memory card is different from the server 305. think of. When relay recording as described above is executed in such a case, each video data is stored in a separate server (in this example, the server 304) even though the compressed video data 401 and 402 are one continuous scene. 305).

  Hereinafter, control by the video camera according to the present embodiment for solving the above-described problem will be described with reference to the flowchart of FIG. The microcomputer 111 executes a series of control from step S501 shown in FIG. 5 when switching the relay recording setting. First, in step S502, the microcomputer 111 determines whether or not the relay recording setting is set to ON. The microcomputer 111 shifts the processing to step S503 when the relay recording setting is set to ON, and to step S506 when the relay recording setting is set to OFF.

  In steps S503 and S504, it is determined whether or not the wireless communication function of the wireless memory card can be executed during execution of relay recording based on a predetermined condition. First, in step S503, the microcomputer 111 determines whether or not the two memory cards serving as recording destination recording media by relay recording are both memory cards with a wireless function. If both are memory cards with a wireless function, the process proceeds to step S504, and if neither or both are memory cards with a wireless function, the process proceeds to step S505.

  In step S504, the microcomputer 111 determines whether or not the transmission destinations match between the recording media on which relay recording is performed. If the transmission destinations do not match, the process proceeds to step S505, and the microcomputer 111 executes wireless communication prohibition processing for prohibiting data transmission using the wireless function of the wireless memory card during execution of relay recording. On the other hand, if the transmission destinations match, the process proceeds to step S506, and the microcomputer 111 permits the transmission of data using the wireless function of the memory card with a wireless function during execution of relay recording. Process. As described above, when it is determined whether or not the wireless function can be used, this process ends (step S507).

According to the above process, the process transitions to step S506 in which wireless communication is permitted in any of the following cases, and in other cases, wireless communication is prohibited in step S505.
・ When relay recording is OFF.
When the relay recording is ON and the memory card mounted on the first medium mounting unit and the second medium mounting unit satisfies a predetermined condition. Here, the predetermined condition is that two memory cards have a wireless function, and data transmission destinations by the wireless communication function of the memory cards match.

  Therefore, if the relay recording is ON and the destinations of the two memory cards do not match, or if the relay recording is ON and one or both of the two memory cards do not have a wireless function, the above conditions Is not satisfied. As described above, when the condition is not satisfied, the wireless communication function is prohibited in step S505. In addition, although the case where relay recording is performed between two recording media has been described, it is obvious that the present invention can also be applied when three or more recording media are used. In step S505, the microcomputer 111 may display that the wireless communication is prohibited on the liquid crystal panel 107 as a display unit.

  As described above, according to the first embodiment, it is possible to prevent compressed video data relay-recorded on two or more recording media with a wireless function from being transferred to different servers.

(Second Embodiment)
In the first embodiment, “when the relay recording is OFF” or “when the relay recording is ON, the two memory cards have a wireless function, and the transmission destinations of data by these memory cards match” In addition, the execution of the wireless communication function is permitted. However, the present invention is not limited to such conditions. For example, a wireless communication menu (user interface: UI) for selecting permission / prohibition of the wireless communication function by a user operation may be provided, and it may be added as a further condition that the wireless communication function is permitted in the wireless communication menu. . In the second embodiment, processing of the microcomputer 111 that realizes such a configuration and function will be described.

  FIG. 6 is a flowchart for explaining processing of the microcomputer 111 according to the second embodiment. Steps S501 to S507 are the same processing as in FIG. However, if it is determined in step S502 that the relay recording setting is OFF, and if it is determined in step S504 that the transmission destinations of the memory cards with wireless functions match, the process transitions to step 608.

  In step 608, the microcomputer 111 determines which of wireless communication permission / prohibition is set by the wireless communication menu. If prohibition of the wireless communication function is set in the wireless communication menu, the process proceeds to step S505 to prohibit the wireless function. If permission of wireless communication is set, the process proceeds to step S506 to permit the wireless function. Advances.

  As described above, according to the second embodiment, in relay recording, even if the transmission destinations of the two wireless memory cards match, transmission of data is prohibited unless the user permits wireless communication. . That is, in the second embodiment, a user interface for setting permission / prohibition of the wireless communication function by a user operation is provided, and when the wireless communication function is prohibited, regardless of the result of determination regarding the predetermined condition. Execution of the wireless communication function by the recording medium is prohibited. Therefore, it is possible to prevent the data from being inadvertently transferred.

  Further, when the wireless communication function is set to be permitted by the wireless communication menu, permission / prohibition of relay recording may be controlled. For example, when the wireless communication function is permitted in the wireless communication menu, if the relay recording function is ON, it is determined whether or not the transmission destinations of two recording media match. Prohibit recording. In this case, for example, the determination in step S608 is executed before step S502. Then, if the wireless communication function is permitted by the wireless communication menu, the processing after step S502 is executed, and if the wireless communication function is prohibited, the processing may be advanced to step S505.

(Third embodiment)
In the third embodiment, when the transmission destinations of a plurality of wireless memory cards are different from each other, a control for automatically matching the transmission destinations and wirelessly transferring the relay recorded video data to the server will be described. . Hereinafter, as in the above-described embodiments, a case where two memory cards are mounted will be described as an example.

  FIG. 7 is a flowchart for explaining processing of the microcomputer 111 according to the third embodiment. Steps S501 to S507 are the same processing as in FIG. However, if it is determined in step S504 that the transmission destinations do not match between the two memory cards, the processing proceeds to step 709. In step S709, the microcomputer 111 changes the transmission destination of one memory card to the transmission destination set in the other memory card. For example, the transmission destination that is recorded first is set to the memory card that is recorded after the relay. By this step, the transmission destination of the wireless memory card used for the relay recording matches. Therefore, in the subsequent step 506, the microcomputer 111 permits wireless communication, and the video data to be relay-recorded is transferred to the same server.

  As described above, according to the third embodiment, compressed video data is transmitted to a separate transmission destination (server) even when the transmission destinations of a plurality of recording media with wireless functions are different. The data can be transmitted to the server without any problem. Note that when the transmission destination is changed in step S709, the user may be notified of this by display on the liquid crystal panel 107 or the like. In addition, the memory card whose transmission destination has been changed may be returned to the original transmission destination after completion of the relay recording.

  In each of the above embodiments, video data (+ audio data) has been described as an example of data to be relay-recorded. However, the present invention is not limited to this. For example, only audio data may be subject to relay recording, and in that case, the present invention can be applied to a data recording apparatus having only a recording function. In short, as long as data to be handled continuously is relay-recorded by a plurality of recording media, any kind of data can be used for relay recording.

  The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. It is a process to be executed.

Claims (7)

A data recording apparatus in which a plurality of recording media can be attached and detached,
A recording means for performing relay recording of data using a recording medium mounted on the first medium mounting section and a recording medium mounted on the second medium mounting section;
The condition that both of the recording media mounted on the first and second medium mounting portions have a wireless communication function for transmitting data wirelessly, and the data transmission destination by the wireless communication function is the same. A determination means for determining whether or not the user is satisfied;
When it is not determined that the condition is satisfied, execution of the wireless communication function is prohibited during execution of the relay recording, and when it is determined that the condition is satisfied, the wireless communication during execution of the relay recording is prohibited. A data recording apparatus comprising: control means for permitting execution of the function. A setting means for setting permission / prohibition of execution of the wireless communication function by a user operation;
The control means, when prohibition of the wireless communication function is set by the setting means, prohibits execution of the wireless communication function regardless of a result of determination by the determination means. The data recording apparatus according to 1. When the transmission destinations of data in the wireless communication function of the recording media mounted on the first and second medium mounting units are different, the transmission destination set on one recording medium is set on the other recording medium Further comprising a changing means for changing to a destination that has been set,
The said control means permits execution of the said radio | wireless communication function, after the transmission destination set to the said one recording medium is changed by the said change means. Data recording device.   The changing means changes a transmission destination set for a recording medium used next in the relay recording to a transmission destination set for a recording medium used first in the relay recording. The data recording apparatus according to claim 3.   The data recording apparatus according to claim 1, further comprising an imaging unit that captures an image of a subject and acquires the data. A method of controlling a data recording apparatus capable of mounting a plurality of recording media,
A recording unit performing relay recording of data using a recording medium mounted on the first medium mounting unit and a recording medium mounted on the second medium mounting unit;
The determination unit has a wireless communication function in which both the recording media mounted on the first and second medium mounting units transmit data wirelessly, and the data transmission destination by the wireless communication function is the same. A step of determining whether or not the condition is satisfied,
When it is not determined that the condition is satisfied, the control unit prohibits execution of the wireless communication function during execution of the relay recording, and when it is determined that the condition is satisfied, the relay recording is being performed. And a step of permitting the execution of the wireless communication function in the method of controlling a data recording apparatus. A program executed by a computer of a data recording apparatus capable of mounting a plurality of recording media,
Performing relay recording of data using a recording medium mounted on the first medium mounting unit and a recording medium mounted on the second medium mounting unit;
The condition that both of the recording media mounted on the first and second medium mounting portions have a wireless communication function for transmitting data wirelessly, and the data transmission destination by the wireless communication function is the same. Determining whether or not satisfied,
When it is not determined that the condition is satisfied, execution of the wireless communication function is prohibited during execution of the relay recording, and when it is determined that the condition is satisfied, the wireless communication during execution of the relay recording is prohibited. And a step for allowing the execution of the function.

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