JP2010093545A - Information processing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information processing apparatus capable of easily checking information of a device that can adapt to a write-once storage medium. <P>SOLUTION: The apparatus comprises: an interface 20 into which a storage medium 30 storing files is inserted; a detection section 22 for detecting whether or not the storage medium inserted into the interface is a write-once storage medium; and a display control section 22 for determining whether or not device information for which the file has been generated is stored in the storage medium when the detection section determines that it is the write-once storage medium, and then displaying the device information for an adaptive device to the write-once storage medium when it determines that the device information is stored. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an information processing apparatus to which a write-once storage medium can be attached.

Conventionally, when deleting, moving, or changing a file stored in a write-once recording medium that can be recorded only once with a digital camera, management information such as FAT and directory information for managing the file is newly added. There is a technique for referring to newly created management information when creating and reading a file (see Patent Document 1).
JP 2003-157193 A

  However, the user does not always have a camera that can delete or change a file stored in a write-once storage medium by the above method. Whether or not such a camera is owned cannot be known unless the user tries to delete a file for each camera.

  An object of the present invention is to provide an information processing apparatus capable of easily confirming information on an apparatus that can be used for a write-once storage medium.

  The information processing apparatus according to the present invention includes an interface for inserting a storage medium for storing a file, a detection unit for detecting whether the storage medium inserted into the interface is a write-once storage medium, and the detection unit. When it is detected that the storage medium is the write-once storage medium, it is determined whether or not the device information that created the file is stored in the storage medium, and when it is determined that the device information is stored. And a display control unit for displaying the device information as a compatible device corresponding to the write-once storage medium.

  The information processing apparatus according to the present invention can display information of a compatible device corresponding to the write-once storage medium when the write-once storage medium is inserted into the interface.

  Hereinafter, a camera according to an embodiment of the present invention will be described. The camera according to the present embodiment can record and delete a captured image file for a normal memory card that is not a write-once type. When a FAT file system is applied to a memory card, the image file deletion method for a normal memory card is such that the storage area in which the image file to be deleted is stored becomes an empty area. The file management area for storing the corresponding FAT area and the file name of the image file is rewritten.

  On the other hand, for a write-once memory card, the deletion method described in Patent Document 1 described above or the storage area in which the storage target image file is stored are not read out. It is a write-once type incompatible camera that cannot perform a deletion method of additionally writing information indicating exclusion from a predetermined storage area. The following description will be made assuming that the camera capable of recording an image file on a write-once memory card is a write-once compatible camera that can also delete an image file by the above method.

  FIG. 1 is a configuration diagram of a camera according to the present embodiment. The camera 1 according to the present embodiment includes a photographic lens 11, a CCD 12, a CCD driver 13, a preprocess circuit 14, an A / D conversion circuit 15, an ASIC (Application Specific Integrated Circuit) 16, a memory 17, a color monitor 18, and an operation unit 19. , A memory card I / F 20, an external I / F 21, and a CPU 22.

  The CCD 12 images subject light via the photographing lens 11 and accumulates charges corresponding to the brightness of the subject, and outputs an analog signal of the accumulated charges to the preprocess circuit 14 under the control of the CCD driver 13. The preprocess circuit 14 amplifies the analog signal output from the CCD 12 and performs analog processing such as noise removal and black level adjustment. The A / D conversion circuit 15 converts the analog signal analog-processed by the preprocess circuit 14 into a digital signal.

  The ASIC 16 performs image processing such as contour compensation and gamma correction on the digital signal converted by the A / D conversion circuit 15. Further, the ASIC 16 conforms to the Exif (Exchangeable Image File Format) standard, information such as the shooting date and time of captured image data, Exif information including the manufacturer name, model name, serial number, etc. of the captured camera, and image data after image processing. Is reduced to a predetermined size, and the Exif information, thumbnail image, and image data after image processing are compressed by a method such as JPEG.

  The memory 17 stores setting information of the camera 1 and the like. The color monitor 18 is composed of a liquid crystal display and displays captured images, camera setting information, and the like. The operation unit 19 includes operation buttons such as a power switch and a release button, and accepts user operations.

  The memory card I / F 20 is a connection interface with the removable memory card 30, and relays transmission / reception of commands and data between the inserted memory card and the camera 1. The external I / F 21 is a connection interface such as a USB for connecting a device such as a PC, and relays communication between the connected device and the camera 1.

  The memory card 30 is composed of an SD card or the like, and includes a flash memory that stores data and a memory that controls data writing or reading according to a command transmitted from the camera 1 via the memory card I / F 20. Consists of a register that stores card attribute information such as controller, data writing unit, storage capacity, card type indicating whether it is a write-once memory card, etc., and is formatted using the FAT file system .

  CPU22 is comprised including ROM and RAM which are not shown in figure, and controls each part which comprises the camera 1 by running the program memorize | stored in ROM.

  Hereinafter, the operation of the camera 1 according to the present embodiment will be described with reference to FIGS. 2, 3, and 4. FIG. 2 shows an operation flow of the camera 1 according to the present embodiment. In this operation, it is assumed that the power source of the camera 1 is set to ON and an image file is recorded on the memory card 30 in accordance with the DCF standard and the Exif standard. In addition, the playback order of the image files stored in the memory card 30 is performed in descending order of the file names of the image files, and the image files are sequentially displayed on the color monitor 18.

  If the CPU 22 detects that the memory card 30 has been inserted into the memory card I / F 20 (step S10: Y), it acquires card attribute information from the memory card 30 and stores it in the RAM (step S11).

  When the user gives an instruction to reproduce the image file via the operation unit 19 (step S12: Y), the CPU 22 reads the file system of the memory card 30 and refers to the directory structure, and descends the file number of the image file. Read image files sequentially. Then, the image data of the read image file is displayed on the color monitor 18 (step S13).

  When the user gives an instruction to delete the image file being reproduced via the operation unit 19 (step S14), the CPU 22 refers to the card attribute information of the memory card 30 stored in the RAM, and the memory card 30 is written once. It is determined whether the memory card is of the type (step S15). When determining that the memory card 30 is a write-once type memory card (step S15: Y), the CPU 22 determines whether Exif information is stored in the memory card 30 (step S16).

  If the CPU 22 determines in step S16 that Exif information is stored in the memory card 30 (step S16: Y), the CPU 22 refers to the Exif information of the image file being reproduced for which the deletion instruction is given in step S14 (step S16). S17). Here, FIG. 3 shows an example of Exif information of the image file being reproduced.

  The CPU 22 reads out the model name “N-D60” and the serial number “XXXX777” included in the Exif information 40 shown in FIG. 3 (step S18). Then, the CPU 22 displays the read “N-D60” and “XXXX777” on the color monitor 18 as information of the write-once compatible camera, and information indicating that the camera 1 is not a write-once compatible camera “cannot be deleted”. Is displayed on the color monitor 18 (step S19).

  FIG. 4 shows a display example of the color monitor 18 when the process of step S19 is performed. As shown in the figure, an image 50 including information indicating that the camera 1 is not a light-once compatible camera and information on the light-once compatible camera is displayed.

  In step S15, if the CPU 22 determines that the memory card 30 is not a write-once type memory card (step S15: N), the image file being reproduced in the file system of the memory card 30 that has been instructed to be deleted is displayed. In the FAT area and the file management area corresponding to the stored storage area, rewriting is performed so that it becomes a free area state (step S20).

  In step S16, if the CPU 22 determines that the Exif information is not stored in the memory card 30 (step S16: N), the color monitor 18 displays information indicating that the image file cannot be deleted. (Step S21).

  If the CPU 22 detects in step S10 that the memory card 30 is not inserted into the memory card I / F 20 (step S10: N), the CPU 22 waits with the power on until the memory card 30 is inserted. To do. In step S12, when the user does not instruct the reproduction of the image file (step S12: N), the process stands by with the power on. In step S14, if the user does not give an instruction to delete the image file (step S14: N), the image file is continuously reproduced.

  In the above-described embodiment, since the camera does not support the write-once memory card, the image file stored in the memory card cannot be deleted. The information of a write-once compatible camera that can record and delete image files can be displayed. Therefore, the user can confirm the write-once compatible camera without trying to delete the image file stored in the write-once memory card for all the cameras owned by the user.

  Hereinafter, modifications of the above-described embodiment will be described. In the above-described embodiment, while the image file is being reproduced, the model name and serial number included in the Exif information of the image file instructed to be deleted by the user are displayed as information about the write-once compatible camera. Of all image files stored in the memory card 30, the Exif information of the image file with the latest file creation date, update date, or shooting date or the image file with the largest folder number and file number The model name and serial number included in the may be displayed as information of the write-once compatible camera.

  Further, among all the image files stored in the memory card 30, the model name and serial number having the largest number of image files having the same model name and serial number included in the Exif information are displayed as information about the write-once compatible camera. Or all types of model names and serial numbers may be displayed.

  In the embodiment described above, the camera 1 is described as a camera that does not support the write-once type. However, even when the camera 1 is a camera that supports the write-once type, information on the above-described camera that supports the write-once type is displayed. You may do it.

  Further, in the above-described embodiment, the case where the deletion instruction is given while sequentially reproducing one image is described. However, when the user selects the image file deletion menu, the write-once compatible camera is used. Information may be displayed, or information on a write-once compatible camera may be displayed when it is detected that a write-once memory card is inserted. In this case, when the delete menu is selected or when the insertion of the write-once memory card is detected, the model name and the model name and the information are obtained from the Exif information of all the image files stored in the memory card 30 by the same method as the above-described modification. Extract and display the serial number.

  Further, in the above-described embodiment, the case where a deletion instruction is given at the time of playing an image file has been described. However, when a shooting operation is performed after the insertion of a write-once memory card, information on a write-once compatible camera is displayed. Information indicating that the image file cannot be recorded may be displayed.

  In the above-described embodiment, the model name and serial number included in the Exif information corresponding to the image file to be deleted are described as information on the write-once compatible camera, but are stored in the write-once memory card. Table information including the model name and serial number of the camera that can delete the stored data is stored in the memory in advance, and the model name and serial number included in the Exif information match the model name and serial number of the table information. The information to be displayed may be displayed as information about the write-once compatible camera. If there is no match, all model names and serial numbers in the table information may be displayed as information about the write-once compatible camera.

  In addition, when a memory card whose data storage area is write-once and whose FAT area is not write-once is inserted, in the FAT area corresponding to the storage area of the image file to be deleted, the storage area is an empty area. When the camera cannot perform deletion processing such as rewriting to the information shown, information indicating that deletion processing cannot be performed and information indicating the model name of the write-once compatible camera, as in the above-described embodiment. indicate.

  In the above-described embodiment, the image file is stored in the memory card 30 in accordance with the Exif standard. However, the device information for identifying the camera that created the image file is recorded in association with the image file. If so, it is not limited to the Exif standard. In this case, it is determined whether or not the device information is stored in association with the image file stored in the memory card 30. If the device information is stored in association with the image file, the device information is written in the write-once type. Display as supported camera information.

  In the above-described embodiment, the description has been given using the camera. However, the present invention is not limited to the camera as long as it is an information device that can reproduce a file stored in a write-once storage medium.

1 is a system configuration diagram of a camera according to an embodiment. It is an operation | movement flowchart of the camera which concerns on embodiment. It is a figure which shows the example of Exif information in embodiment. It is an example of a display of the information of the write once type camera in an embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Shooting lens, 12 ... CCD, 13 ... CCD driver, 14 ... Preprocess circuit, 15 ... A / D conversion circuit, 16 ... ASIC, 17 ... Memory, 18 ... Color monitor, 19 ... Operation unit, 20 ... Memory card I / F, 21 ... External I / F, 22 ... CPU, 30 ... Memory card

Claims (5)

An interface for inserting a storage medium for storing files;
A detection unit for detecting whether or not the storage medium inserted into the interface is a write-once storage medium;
When the detection unit detects that the file is a write-once type storage medium, it is determined whether the device information that created the file is stored in the storage medium, and the device information is stored. An information processing apparatus comprising: a display control unit that displays the apparatus information as a corresponding apparatus corresponding to the write-once storage medium when the determination is made. The corresponding device is capable of storage control processing including processing related to deletion of a file stored in the write-once storage medium,
The information processing apparatus according to claim 1, wherein the display control unit displays the apparatus information when the own apparatus is not the corresponding apparatus. A plurality of the files are stored in the storage medium,
The information processing apparatus according to claim 1, wherein the display control unit displays the apparatus information as the corresponding apparatus based on all the apparatus information stored in the storage medium. The storage medium stores update information indicating an update order of the plurality of files,
The information processing apparatus according to claim 3, wherein the display control unit displays the apparatus information of the file whose update order is the latest in all the update information as the corresponding apparatus. The information processing apparatus is a camera including an imaging element that images subject light and outputs an imaging signal.
The storage medium stores an image file stored in accordance with the Exif format,
5. The display control unit according to claim 1, wherein the display control unit performs the display control when the device information is stored in shooting information of the image file stored in the Exif format. The information processing apparatus according to one item.

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