WO2010001863A1 - 記録制御装置 - Google Patents
記録制御装置 Download PDFInfo
- Publication number
- WO2010001863A1 WO2010001863A1 PCT/JP2009/061868 JP2009061868W WO2010001863A1 WO 2010001863 A1 WO2010001863 A1 WO 2010001863A1 JP 2009061868 W JP2009061868 W JP 2009061868W WO 2010001863 A1 WO2010001863 A1 WO 2010001863A1
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- WIPO (PCT)
- Prior art keywords
- external device
- recording control
- storage medium
- write
- memory card
- Prior art date
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
- H04N5/772—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera the recording apparatus and the television camera being placed in the same enclosure
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/907—Television signal recording using static stores, e.g. storage tubes or semiconductor memories
Definitions
- the present invention relates to a recording control apparatus capable of mounting a write-once type storage medium.
- a write-once memory card has a configuration in which data cannot be rewritten in an area where data has been written once, but can be additionally written. Further, because of its configuration, it can be manufactured at a low cost and is provided at a relatively low price, it is generally widely used.
- devices such as cameras that can be equipped with a memory card are compatible with the memory card even when a write-once memory card is installed.
- Data write and read access is possible.
- data other than image data captured by the camera such as setting information set in the camera
- data that is not intended by the user from an external device connected to the camera It can happen that it is written. Therefore, in that case, unnecessary data written in the write-once memory card cannot be erased, and the storage capacity of the memory card cannot be used effectively.
- An object of the present invention is to provide a recording control device that controls access to a storage medium so as to effectively use the storage capacity of a write-once storage medium.
- the recording control apparatus includes an interface unit for mounting a removable storage medium, a detection unit for detecting whether the storage medium mounted on the interface unit is a write-once storage medium, and the detection unit When the write-once type storage medium is detected, a recording control unit that controls by limiting a part of a predetermined access function related to the storage medium is provided.
- the present invention when a write-once type storage medium is installed, it is possible to control by restricting a part of access related to the storage medium, so that access that may cause unnecessary data to be written is limited.
- the storage capacity of the write-once storage medium can be used effectively.
- the access that partially restricts the access function to the memory card is performed.
- the memory card when operating in the function restriction mode and setting to prohibit writing, the memory card operates in a read-only mode in which only reading is performed.
- the access function restriction mode in the present embodiment restricts write access for writing data other than the captured image data from the write access function for writing data to the memory card, and also allows memory from an external device attached to the camera. Limit connections to external devices to prevent writing to the card. If it is not a write-once memory card, it operates in a normal mode that does not restrict writing.
- FIG. 1 is a block diagram showing the configuration of the camera of this embodiment.
- the camera 1 includes a photographing 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.
- a unit 19 a memory card I / F 20, an external I / F 21, and a CPU 10 are configured.
- the CCD 12 captures the 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 receives the analog signal analog-processed by the preprocess circuit 14. Convert to digital signal. Further, 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, and in accordance with the Exif (Exchangeable Image Image File Format) standard, the image data shooting date and time, the shutter speed.
- Header information data including compression information, and thumbnail image data obtained by reducing the image data after image processing to a predetermined size, and header information data, thumbnail image data, and main image data after image processing are converted into a format such as JPEG To generate an image file.
- the memory 17 is composed of DRAM (Dynamic Random Access Memory) and is a work memory used when the CPU 10 executes a program, and temporarily stores image data after image processing.
- the color monitor 18 includes a liquid crystal display, and displays 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 read / write commands, data, and the like between the mounted memory card and the camera 1.
- the external I / F 21 is an interface for USB connection of an external device such as a PC, and relays communication between the connected external device and the camera 1.
- the memory card 30 is a write-once memory card, and can write or read data in accordance with a flash memory for storing data and a read / write command transmitted from the camera 1 via the memory card I / F 20. It is configured to include a memory controller that performs control, a register that stores card attribute information such as data write unit information and information indicating that it is a write-once medium, and is formatted based on a predetermined file system. . In the present embodiment, in response to a write permission request from the camera 1, the memory card 30 performs a write validation process for transmitting a write permission response, and then the data can be written to the memory card 30. Shall. When the camera 1 does not request permission to write to the memory card 30, the memory card 30 is controlled to be read-only.
- the CPU 10 controls each unit constituting the camera 1 by executing an application program stored in a ROM (not shown).
- This application program is a program for recording image data captured by the user operating the release button in the memory card 30, or camera settings such as white balance, dimming correction amount, and ISO sensitivity that the user has previously set in the camera 1.
- the CPU 10 writes the captured image data, camera setting data, a temporary file when executing the application program to the memory card 30 according to the operation mode, and the image file stored in the memory card 30. Read processing is performed.
- an external device capable of USB connection is attached to the external I / F 21
- the USB connection processing is performed with the external device to enable communication with the external device, and the external device is attached to the camera 1. Access to the memory card 30 is made possible.
- step S110 the CPU 10 determines whether or not the memory card 30 is attached to the memory card I / F 20 (step S111).
- Step S111: N When the CPU 10 determines that the memory card 30 is not attached to the memory card I / F 20 (step S111: N), the operation mode setting process is terminated, and the CPU 10 determines that the memory card 30 is attached. (Step S111: Y), the card attribute information is acquired from the memory card 30, and it is determined whether or not the memory card 30 is a write-once memory card (Step S112).
- step S112: N When the CPU 10 determines that the memory card 30 is not a write-once memory card (step S112: N), the operation mode setting process is terminated. If it is determined that the memory card 30 is a write-once memory card (step S112: Y), a selection menu image for allowing the user to select whether to allow or prohibit writing to the memory card 30 is displayed on the color monitor 18. (Step S113).
- the CPU 10 When the CPU 10 accepts a selection for permitting writing to the memory card 30 via the operation unit 19 (step S114: Y), the CPU 10 captures the captured image data as warning information for limiting the access function to the memory card 30.
- the data monitor is limited to write data and information indicating that the USB connection with the external device attached to the external I / F 21 is invalid is displayed on the color monitor 18 (step S115).
- the CPU 10 transmits a write permission request for permitting data writing to the memory card 30 and receives a write permission response from the memory card 30 to perform a write validation process for the memory card 30 (step S116).
- the CPU 10 acquires the file system from the memory card 30, mounts the file system in a predetermined memory area in the write permission mode (step S117), and sets the access function restriction mode as the current operation mode (step S118).
- step S114: N when the CPU 10 accepts a selection for prohibiting writing to the memory card 30 by the user via the operation unit 19 (step S114: N), the CPU 10 acquires the file system from the memory card 30 and stores the file system in a predetermined memory area.
- the file system is mounted in the read-only mode (step S119), and the read-only mode is set as the current operation mode (step S120).
- FIG. 3 is a flowchart showing a process of writing and reading data to the memory card 30.
- the CPU 10 reads and executes the application program from the ROM in response to a user operation via the operation unit 19 (step S210).
- the application program includes a command to write the image data temporarily stored in the memory 17 to the memory card 30 (step S211: Y)
- the CPU 10 determines that the current operation mode is the read-only mode (step S212). : Y)
- the command to write the image file to the memory card 30 is skipped and the process is terminated.
- step S212 the CPU 10 reads the image data from the memory 17 if the current operation mode is not the read-only mode, that is, if the access function restriction mode or the normal mode is selected (step S212: N), and the file With reference to the system, a write command for writing image data to the memory card 30 is issued, and the image data is written in the memory card 30 (step S213).
- step S211: N, S214: Y when the application program being executed includes an instruction to write data other than image data such as camera setting data and temporary files to the memory card 30 (steps S211: N, S214: Y), If the operation mode is not the read-only mode or the access function restriction mode (step S215: N), a write command for writing data to the memory card 30 with reference to the file system is issued according to the write command, and the memory card 30 Is written (step S216). On the other hand, when the current operation mode is the read-only mode or the access function restriction mode in step S215 (step S215: Y), the CPU 10 skips the write command and ends the process.
- step S211: N, S214: N, S217: Y the CPU 10 follows the read instruction regardless of the operation mode. Referring to the file system, a read command for reading the data is issued, and the data is read from the memory card 30 (step S218).
- step S217: N the CPU 10 ends the writing and reading processing to the memory card 30.
- step S310: Y when the current operation mode is the access function restriction mode or the read-only mode (step S311: Y), The USB connection process for performing configuration by outputting a RESET signal to the external device is stopped, and the USB connection with the external device is invalidated (step S312).
- step S311: N When the current operation mode is not the access function restriction mode or the read-only mode (step S311: N), the CPU 10 transmits a RESET signal to the external device for a predetermined time (step S313). Then, the CPU 10 transmits a device descriptor transfer request to the external device, receives the device descriptor from the external device, assigns an address to the external device, and performs configuration (step S314). As a result, the CPU 10 validates the USB connection and enables communication with the external device (step S315). In step S310, when the CPU 10 does not detect an external device capable of USB connection in the external I / F 21 (step S310: N), the process ends.
- the camera 1 when a write-once memory card is inserted, the camera 1 can allow the user to select whether to allow or prohibit writing to the memory card, so that an operation mode corresponding to the user selection is set. can do. Even if the user selects write permission, writing can be restricted so that data other than the captured image data is not written to the memory card. Therefore, it is possible to prevent a temporary file unintended by the user from being written to the write-once type memory card by an application or erroneously writing data such as camera settings. In addition, since the connection with the external device can be invalidated so that the attached external device does not access the memory card, the external device attached to the camera 1 is connected to the memory attached to the camera 1. Operations such as writing data using the card as a removable disk can be prevented, and the limited storage area of the memory card can be used effectively.
- the communication standard with the external device is described as the USB standard.
- another communication standard such as IEEE 802.3 or IEEE 1394 may be used.
- the description has been made using the camera, but it may be an information device such as a mobile phone or a PDA in which a storage medium such as a write-once memory card can be mounted.
- the camera including the recording control device according to the second embodiment has a modified operation when an external device is attached to the external I / F 21 of the camera including the recording control device according to the first embodiment. It is. Therefore, a detailed description of the same configuration as that of the above-described camera 1 is omitted, and only different portions will be described in detail.
- the same components as those of the camera 1 described above are denoted by the same reference numerals for description.
- FIG. 5 is a flowchart showing an operation when an external device is attached to the external I / F 21 of the camera including the recording control apparatus according to the second embodiment.
- the CPU 10 detects an external device capable of USB connection in the external I / F 21 (step S410: Y)
- the CPU 10 transmits a RESET signal to the external device for a predetermined time (step S411).
- the CPU 10 assigns an address to the external device by the same process as in step S314 described above, performs configuration, and acquires device information of the external device (step S412).
- step S413 when the current mode is the access function restriction mode or the read-only mode (step S413: Y), whether or not the external device is a device that performs a writing process on the memory card 30 in steps S414 to S416. Judgment is made.
- step S414 it is determined whether or not the external device is a printer based on the acquired device information of the external device (step S414). If the external device is not a printer, it is determined whether the external device is a data transmission-dedicated device that only transmits data from the camera 1 to the external device in data transmission / reception, such as a wireless transmitter (step S415). If the external device is not a transmission-only device, it is determined whether or not the external device is a device registered in advance as a device that does not perform writing processing on the memory card 30 (step S416). If the external device is not a pre-registered device, the USB connection process for performing configuration by outputting a RESET signal to the external device is stopped, and the USB connection with the external device is invalidated (step S417).
- a data transmission-dedicated device that only transmits data from the camera 1 to the external device in data transmission / reception, such as a wireless transmitter
- step S414: Y When the external device is not a device that performs a writing process on the memory card 30, that is, when the external device is a printer (step S414: Y), when the external device is a transmission-only device (step S415: Y), the external device If the device is a pre-registered device (step S416: Y), the CPU 10 validates the USB connection and enables communication with the external device (step S418).
- step S413: N the CPU 10 validates the USB connection so that it can communicate with the external device (step S418).
- step S410 when the CPU 10 does not detect an external device capable of USB connection in the external I / F 21 (step S410: N), the process ends.
- the camera including the recording control device according to the third embodiment is obtained by changing the operation when an external device is attached to the external I / F 21 of the camera including the recording control device according to the above-described embodiment. is there. Therefore, a detailed description of the same configuration as that of the above-described camera 1 is omitted, and only different portions will be described in detail.
- the same components as those of the camera 1 described above are denoted by the same reference numerals for description.
- FIG. 6 is a flowchart showing an operation when an external device is attached to the external I / F 21 of the camera including the recording control apparatus according to the third embodiment.
- the processing shown in steps S510 to S513 is the same as the processing in steps S410 to S413 shown in FIG.
- step S513: Y when the current mode is the access function restriction mode or the read-only mode (step S513: Y), the connection state with the external device is confirmed.
- step S514 it is determined whether or not the external device is connected by mass storage connection. If it is not a mass storage connection, it is determined whether the communication protocol is PTP (Picture Transfer Protocol) (step S515). If the communication protocol is not PTP, it is determined whether or not the communication protocol is a connection permission protocol that does not output a write command to the memory card 30 by an external device (step S516). If it is not a connection permission protocol, the USB connection processing for performing configuration by outputting a RESET signal to the external device is stopped, and the USB connection with the external device is invalidated (step S517).
- PTP Physical Transmission Protocol
- step S515: Y If the communication protocol for connection with the external device is PTP (step S515: Y), a setting is made to invalidate the write command to the write-once memory card 30 (step S518), and the CPU 10 determines the USB 10 The connection is validated to enable communication with an external device (step S519). Even when the communication protocol for connection with the external device is a connection permission protocol (step S516: Y), the CPU 10 validates the USB connection to enable communication with the external device (step S519).
- step S514 Y
- step S514 it is determined whether or not the connected device is connected by mass storage connection.
- step S520 it is determined whether or not the connected device is connected as a client.
- the USB connection processing for performing configuration by outputting a RESET signal to the external device is stopped, and the USB with the external device is stopped.
- the connection is invalidated (step S517).
- step S520: Y if the connected device is connected as a client (step S520: Y), a setting is made to disable writing to the write-once memory card 30 (step S521), and the CPU 10 validates the USB connection. Then, communication with an external device is made possible (step S519).
- step S510 when the CPU 10 does not detect an external device capable of USB connection in the external I / F 21 (step S510: N), the process ends.
- connection state such as the communication protocol with the attached external device
- the USB connection process is stopped and the USB connection with the external device is invalidated.
- the memory card 30 is attached to the memory card I / F 20 instead of the process of invalidating the USB connection. It may be configured to recognize that it is not performed, or may be configured to recognize that the free capacity of the memory card 30 attached to the memory card I / F 20 is zero.
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Abstract
Description
Claims (12)
- 着脱可能な記憶媒体を装着するインタフェース部と、
前記インタフェース部に装着された前記記憶媒体がライトワンス型の記憶媒体か否か検出する検出部と、
前記検出部により前記ライトワンス型の記憶媒体が検出された場合に、前記記憶媒体に関する所定アクセス機能のうちの一部を制限して制御する記録制御部と
を備えることを特徴とする記録制御装置。 - 前記所定アクセス機能は、前記記憶媒体にデータを書き込むライトアクセス機能を含み、
前記検出部により前記ライトワンス型の記憶媒体が検出された場合に、当該記憶媒体へのデータの書き込みを許可するか否かの選択を受付ける選択受付部を備え、
前記記録制御部は、前記選択受付部により前記記憶媒体へ書き込みを許可する選択が受け付けられた場合には、前記ライトアクセス機能の一部を制限して前記記憶媒体に書き込みを行うよう制御することを特徴とする請求項1記載の記録制御装置。 - 着脱可能な外部機器を装着する外部機器インタフェース部を備え、
前記所定アクセス機能は、前記外部機器インタフェース部に装着された前記外部機器との接続を行う外部機器接続機能を含み、
前記記録制御部は、前記検出部により前記ライトワンス型の記憶媒体が検出された場合に、前記外部機器接続機能を制限することを特徴とする請求項1又は2記載の記録制御装置。 - 前記記録制御装置は、被写体光を撮像して撮像信号を出力する撮像素子を備えたカメラであり、
前記記録制御部は、前記検出部により前記ライトワンス型の記憶媒体が検出された場合に、前記撮像素子により出力された前記撮像信号に基づく画像データ以外のデータを前記記憶媒体に書き込む機能を制限することを特徴とする請求項2又は3に記載の記録制御装置。 - 前記画像データ以外の前記データは、一時ファイルのデータ、及び前記カメラのユーザ設定のデータであることを特徴とする請求項4記載の記録制御装置。
- 前記外部機器インタフェース部は、USB接続可能なインタフェースであり、
前記外部機器接続機能は、前記外部機器インタフェース部に装着された前記外部機器とUSB接続を行う機能であることを特徴とすることを特徴とする請求項3~5の何れか一項に記載の記録制御装置。 - 前記外部機器の機器情報を取得する機器情報取得部を備え、
前記記録制御部は、前記機器情報に応じて前記外部機器接続機能を制限することを特徴とする請求項3または6記載の記録制御装置。 - 前記記録制御部は、前記機器情報に基づく外部機器が前記記憶媒体に対して書き込み処理を行わない機器である場合には、前記記録制御部は前記外部機器接続機能による接続を可能とすることを特徴とする請求項7記載の記録制御装置。
- 前記書き込み処理を行わない機器はプリンタ、送信専用機器または予め登録された機器のうちの何れかであることを特徴とする請求項8記載の記録制御装置。
- 前記外部機器との接続を行う際の通信プロトコルの種類に応じて前記記録制御部は前記外部機器接続機能を制限することを特徴とする請求項3または6記載の記録制御装置。
- 前記通信プロトコルの種類がPTPである場合には前記外部機器接続機能による接続を可能とすることを特徴とする請求項10記載の記録制御装置。
- 前記外部機器がクライアントとしてマスストレージ接続された場合には前記外部機器接続機能による接続を許可し、前記外部機器がホストとしてマスストレージ接続された場合には前記外部機器接続機能による接続を制限することを特徴とする請求項3または6記載の記録制御装置。
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JP2010519064A JP5299425B2 (ja) | 2008-06-30 | 2009-06-29 | 記録制御装置 |
EP09773441.2A EP2309735A4 (en) | 2008-06-30 | 2009-06-29 | RECORDING CONTROL DEVICE |
CN2009801254248A CN102077579A (zh) | 2008-06-30 | 2009-06-29 | 记录控制装置 |
US13/001,184 US20110185131A1 (en) | 2008-06-30 | 2009-06-29 | Recording control device |
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JP2008169890 | 2008-06-30 | ||
JP2008-169890 | 2008-06-30 |
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US (1) | US20110185131A1 (ja) |
EP (1) | EP2309735A4 (ja) |
JP (1) | JP5299425B2 (ja) |
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WO (1) | WO2010001863A1 (ja) |
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US11409918B1 (en) * | 2021-04-28 | 2022-08-09 | International Business Machines Corporation | Access control management of baseboard management controller peripherals |
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2009
- 2009-06-29 US US13/001,184 patent/US20110185131A1/en not_active Abandoned
- 2009-06-29 WO PCT/JP2009/061868 patent/WO2010001863A1/ja active Application Filing
- 2009-06-29 EP EP09773441.2A patent/EP2309735A4/en not_active Withdrawn
- 2009-06-29 CN CN2009801254248A patent/CN102077579A/zh active Pending
- 2009-06-29 JP JP2010519064A patent/JP5299425B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001077811A (ja) * | 1999-09-01 | 2001-03-23 | Akuton Technology Kk | ネットワークインターフェースカード |
JP2004265570A (ja) * | 2003-02-12 | 2004-09-24 | Sony Corp | データの記録方法、記録装置、再生方法、再生装置および記録メディア |
JP2004254062A (ja) * | 2003-02-20 | 2004-09-09 | Canon Inc | 記録装置 |
JP2007166040A (ja) | 2005-12-09 | 2007-06-28 | Megachips Lsi Solutions Inc | 使い捨てデジタルカメラ、デジタルプリント方法およびデジタルプリント装置 |
Non-Patent Citations (1)
Title |
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See also references of EP2309735A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8487137B2 (en) | 2005-06-13 | 2013-07-16 | Innovative Surface Technologies, Llc | Photochemical crosslinkers for polymer coatings and substrate tie-layer |
US8779206B2 (en) | 2005-06-13 | 2014-07-15 | Innovative Surface Technologies, Llc | Photochemical crosslinkers for polymer coatings and substrate tie-layer |
Also Published As
Publication number | Publication date |
---|---|
US20110185131A1 (en) | 2011-07-28 |
EP2309735A1 (en) | 2011-04-13 |
JPWO2010001863A1 (ja) | 2011-12-22 |
CN102077579A (zh) | 2011-05-25 |
EP2309735A4 (en) | 2013-10-09 |
JP5299425B2 (ja) | 2013-09-25 |
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