WO2000060595A1 - Cartouche de disque et dispositif d'enregistrement et de reproduction de signaux - Google Patents

Cartouche de disque et dispositif d'enregistrement et de reproduction de signaux Download PDF

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Publication number
WO2000060595A1
WO2000060595A1 PCT/JP2000/001877 JP0001877W WO0060595A1 WO 2000060595 A1 WO2000060595 A1 WO 2000060595A1 JP 0001877 W JP0001877 W JP 0001877W WO 0060595 A1 WO0060595 A1 WO 0060595A1
Authority
WO
WIPO (PCT)
Prior art keywords
erasure prevention
erroneous erasure
erroneous
disk
mode
Prior art date
Application number
PCT/JP2000/001877
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Nakashima
Shigeru Miki
Makoto Takahashi
Original Assignee
Sanyo Electric Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co., Ltd. filed Critical Sanyo Electric Co., Ltd.
Publication of WO2000060595A1 publication Critical patent/WO2000060595A1/fr

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Classifications

    • 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
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/03—Containers for flat record carriers
    • G11B23/0301—Details
    • G11B23/0302—Auxiliary features
    • G11B23/0303—Write protect features with a sliding part

Definitions

  • the present invention relates to a disk cartridge accommodating a disk-shaped signal recording medium such as an optical disk, a magnetic disk, and a magneto-optical disk, and a signal recording / reproducing apparatus for recording and reproducing a signal for such a disk cartridge. It is. Background art
  • a single erasure prevention hole is opened in the case containing the disk, and an erasure prevention piece that can open and close the erasure prevention hole can be moved.
  • the entire area including the recorded area and the unrecorded area of the disc is moved by moving the erroneous erasure prevention frame and switching the erroneous erasure prevention hole between the open state and the closed state.
  • An all-erasable mode in which data can be erased for an area and an all-erasable mode in which data cannot be erased for the entire area of the disk are set.
  • important data that cannot be erased and non-erasable data that are erasable are mixedly recorded on the disc, and the data recorded before a certain point in time is important and cannot be erased, but at some point If the data recorded thereafter is not important and can be erased, when recording new data on such a disc, set the all-erasable mode and select the erasable non-essential data. After erasing the data, new data is written.
  • the case (4) is provided with a plurality of erroneous erasure prevention holes (41) and (42), and the erroneous erasure prevention holes (41) and (42) can be opened and closed.
  • Possible erasure prevention pieces (7) are accommodated so that they can be moved and softly locked at a plurality of positions.
  • the conventional all-erasable mode is adopted as one erasure prevention mode
  • the conventional all-erasable mode is adopted as another erasure prevention mode
  • the other erasure prevention mode is adopted as another one.
  • a selective erasable mode can be adopted in which important data recorded on the disk of the disk cartridge cannot be erased, and non-important data can be erased.
  • the signal recording / reproducing apparatus is directed to the disk cartridge of the present invention.
  • detection means for detecting the open / close state of each of the erroneous erasure prevention holes (41) and (42) is provided opposite to the disk cartridge (1). Depending on the result, three or more multiple erasure prevention modes are set.
  • the detection signal from the detection means to a circuit for erasing and recording the signal, for example, the above-described all erasable mode, all erasable mode, or selective erasable mode is automatically set. Can be done.
  • a mode is set in which a recorded area of a disc is not erasable and an unrecorded area is erasable.
  • the boundary between the recorded area and the unrecorded area can be the time when the disc cartridge is ejected from the signal recording / reproducing apparatus, or the recording end position when the power of the signal recording / reproducing apparatus is turned off.
  • a mode is set in which a recorded area of a disc can be erased and an unrecorded area cannot be erased.
  • the boundary between the recorded area and the unrecorded area can be the time when the disc cartridge is ejected from the signal recording / reproducing device, or the recording end position when the power of the signal recording / reproducing device is turned off. This makes it possible to record new data in a data recording area before the recording end position.
  • a mode is set in which only data satisfying a condition set by a user can be erased.
  • a condition relating to recording data management information recorded on the disk of the disk cartridge (1) can be adopted. This makes it impossible to record new data in an area where data was recorded before a certain point in time, and to record new data in an area where data was recorded after that point. Can be made possible.
  • three or more erroneous erasure prevention modes can be set. By selecting an appropriate erasure prevention mode from among these, important data can be set. The risk of erroneous erasure can be reliably avoided.
  • FIG. 1 is a plan view of a disk cartridge according to the present invention.
  • FIG. 2 is a diagram for explaining switching between four erasure prevention modes in the disk cartridge.
  • FIG. 3 is a plan view of another disk cartridge according to the present invention.
  • FIG. 4 is a diagram for explaining switching between four erroneous erasure prevention modes in the disk cartridge.
  • FIG. 5 is a plan view showing a specific structure of the disk cartridge according to the present invention.
  • FIG. 6 is a rear view of the disk cartridge.
  • FIGS. 7 (a) and 7 (b) are a rear view and a side view of the erroneous erasure prevention piece, respectively.
  • FIGS. 8 (a) and 8 (b) are a plan view and a rear view, respectively, showing a cross-sectional structure of a main part of the case.
  • FIGS. 9 (a) and 9 (b) are a series of plan and rear views, respectively, showing the states of the erroneous erasure prevention hole and the erroneous erasure prevention piece in the three erasure prevention modes.
  • FIG. 10 is a block diagram illustrating a configuration of a digital still camera according to the present invention.
  • the disk cartridge (1) shown in FIG. 1 includes a shutter (3) in a case (4), and a first erroneous erasure prevention hole (41) and a second hole at the end opposite to the mounting position of the shutter (3).
  • the erroneous erasure prevention holes (42) are opened, and the erroneous erasure prevention pieces (5) for opening and closing the erroneous erasure prevention holes (41) and (42) are mounted so as to be able to reciprocate on a straight line.
  • FIG. 2 by moving the erroneous erasure prevention piece (5) and changing the combination of the open / close states of the erasure prevention holes (41) and (42), four erasure prevention modes 1 to ⁇ are set. Is possible.
  • the second erroneous erasure prevention hole (42) is closed, while the first erroneous erasure prevention hole (41) is opened.
  • the erroneous erasure prevention mode (3) and the fourth erroneous erasure prevention mode (2) in which both the erasure prevention holes (41) and (42) are opened are sequentially set.
  • the first erroneous erasure prevention hole (41) and the second erroneous erasure prevention hole (42) are provided at the end opposite to the mounting position of the shutter (3).
  • Erroneous erasure prevention pieces (6) for opening and closing the erroneous erasure prevention pieces (6) are mounted so as to be able to reciprocate on an arc line, and as shown in FIG. ) By changing the combination of the open / closed state of (42), it is possible to set four erroneous erasure prevention modes 1 to 4.
  • the case (4) of the disk cartridge (1) contains a magneto-optical disk D, and has an end opposite to the mounting position of the shutter (3).
  • a first erroneous erasure prevention hole (41) and a second erroneous erasure prevention hole (42) are opened on the back of the case (4), and these erroneous erasure prevention holes (41) and (42) are opened and closed.
  • Erase prevention piece (7) is rotatably housed.
  • the case (4) of the disc cartridge (1) has an arc-shaped hole (43) opened on the surface of the case (4) to expose the tip of the erroneous erasure prevention piece (7). .
  • the erroneous erasure prevention piece (7) has an arm (71) having a circular hole (75) at the base end and a tip end of the arm (71). And a shield (72) that is bent and protruded from the control panel.
  • An operation piece (74) is protruded from a base end of the shield (72), and a convex portion is provided on an outer side surface of the shield (72).
  • a part (73) is protruded.
  • the shielding portion (72) of the erroneous erasure prevention piece (7) has a size that allows both the erasure prevention holes (41) and (42) to be closed at the same time. Further, the operation piece (74) protrudes from the arc hole (43) of the case (4) shown in FIG. 5, so that the erroneous erasure prevention piece (7) can be rotated.
  • the circular hole (75) of the erroneous erasure prevention piece (7) is located at the center of curvature of the circular hole (43). A boss (44) to be fitted is formed.
  • a guide wall (45) formed of a cylindrical surface centered on the boss (44) is formed on the inner surface of the case (4).
  • the guide wall (45) has a circular hole in the boss (44).
  • the erroneous erasure prevention piece (7) fitted with (75) comes into sliding contact with the side surface of the shielding portion (72).
  • the guide wall (45) has four recesses (46), (47), (48), and (49) that can be engaged with the projections (73) of the erroneous erasure prevention piece (7).
  • the erroneous erasure prevention piece (7) can be softly locked in four rotation postures.
  • three erroneous erasure prevention modes are realized by switching among the three soft locking positions. That is, by engaging the convex portion (73) of the erroneous erasure prevention piece (7) with the second concave portion (47) of the guide wall (45), the first erroneous erasure prevention mode ⁇ ⁇ is realized. ) Is engaged with the third concave portion (48) to realize the second erroneous erasure prevention mode ⁇ , The third erroneous erasure prevention mode 3 is realized by engaging the convex portion (73) with the fourth concave portion (49).
  • the state in which the convex portion (73) of the erroneous erasure prevention piece (7) is engaged with the first concave portion (46) of the guide wall (45) is set as the fourth erroneous erasure prevention mode, and another mode setting is performed. It is also possible.
  • the second erasure prevention hole (42) is closed by the erasure prevention piece (7), while the first erasure prevention Hole (41) is opened.
  • the second erasure prevention mode II both the first erasure prevention hole (41) and the second erasure prevention hole (42) are closed.
  • the third erroneous erasure prevention mode 3 the second erroneous erasure prevention hole (42) is opened, while the first erroneous erasure prevention hole (41) is closed.
  • the operation of each of the following modes can be realized by optically or mechanically detecting and discriminating the open / closed state of the erroneous erasure prevention holes (41) and (42).
  • the first erasure prevention mode is an all erasable mode in which the entire area of the disk of the disk cartridge (1) can be erased.
  • the second erasure prevention mode II is that the entire area of the disk cannot be erased.
  • the third erroneous erasure prevention mode 3 is a selective erasable mode in which the recorded area of the disc cannot be erased and the unrecorded area can be erased.
  • the boundary between the recorded area and the unrecorded area is set at the time when the disc cartridge is ejected or when the power of the digital still camera is turned off.
  • FIG. 10 shows the configuration of a digital still camera that records and reproduces video data for the disk cartridge (1).
  • a magnetic head (11) and an optical head (12) are provided on both sides of a disk cartridge (1) driven to rotate by a spindle motor (27).
  • an erroneous erasure prevention hole detection switch (10) for detecting the open / close state of the first erroneous erasure prevention hole (41) and the second erroneous erasure prevention hole (42). has been deployed.
  • the rotation speed of the spindle motor (27) is controlled by a disk rotation control circuit (17).
  • a recording circuit (20) and an erasing circuit (18) are connected to the magnetic head (11). Recording and erasing of signals with respect to the cartridge (1) are performed.
  • a reproducing circuit (19) is connected to the optical head (12) to reproduce a signal.
  • the erroneous erasure prevention hole detection switch (10) is connected to the erasure circuit (18) and the recording circuit (20) via the erroneous erasure mode detection circuit (21) to control the erasure and recording of signals.
  • 0 is connected to a main control circuit (13) composed of a microcomputer via a data bus (16), and the circuit operation is controlled by the main control circuit (13).
  • the data bus (16) is connected to a signal compression circuit (15) for compressing video signals and a DRAM (14) for storing video signals.
  • a liquid crystal display (22) is connected to the data bus (16) via an NTSSC controller (26). Further, it is connected to a data bus (16) via an imaging device power AD converter (24) comprising an optical system (2) and a CCD (23) and a signal processing circuit (25).
  • the first erroneous erasure prevention hole (41) and the second erroneous erasure prevention hole (42) opened in the disc cartridge (1) by the erroneous erasure prevention hole detection switch (10). Open / close state is detected, and the detection signal is applied to the erroneous erase mode detection circuit (2
  • the three erroneous erasure modes are determined, and an erroneous erasure prevention mode detection signal is generated.
  • the signal erasing operation by the erasing circuit (18) and the signal recording operation by the recording circuit (20) are controlled based on the erroneous erasing mode detection signal.
  • the disc cartridge In the third erroneous erasure prevention mode (3), the disc cartridge is ejected. Deletion of previously recorded data is prohibited, but if the disc cartridge is reloaded after ejection, subsequent deletion of recorded data is allowed, and new data can be recorded.
  • this third erroneous erasure prevention mode 3 for example, images taken the day before are important and cannot be erased, but images taken today can be erased until the final shooting is completed. This mode is effective when the recorded image remaining at that time is regarded as having high importance due to the eject or power-off after completion, and subsequent erasure is prohibited.
  • each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.
  • the erroneous erasure prevention modes it is possible to set a mode in which only data that satisfies the conditions set by the user can be erased.
  • the conditions set by the user it is possible to employ the recording data management information (TOC information) recorded on the disc and the condition relating to the date. This makes it impossible to erase data recorded within a certain period, for example, thereby preventing erroneous erasure.
  • TOC information recording data management information

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  • Storage Device Security (AREA)

Abstract

L'invention concerne une cartouche de disque dans laquelle plusieurs orifices de prévention d'effacement erroné (41, 42) sont formés dans un boîtier (4), un bloc de prévention d'effacement erroné (5) capable d'ouvrir et de fermer les orifices de prévention d'effacement erroné (41, 42) est prévu dans le boîtier, de sorte qu'il puisse être actionné, se déplacer et se bloquer temporairement dans plusieurs positions. Le bloc de prévention d'effacement erroné (5) est déplacé et mis dans chaque position de blocage temporaire, de sorte que la combinaison des états d'ouverture et de fermeture des orifices de prévention d'effacement erroné (41, 42) et que plusieurs modes de prévention d'effacement erroné, au moins trois, soient mis en place, la possibilité d'effacement erroné de données importantes étant ainsi éliminée.
PCT/JP2000/001877 1999-03-30 2000-03-27 Cartouche de disque et dispositif d'enregistrement et de reproduction de signaux WO2000060595A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/89889 1999-03-30
JP11089889A JP2000285628A (ja) 1999-03-30 1999-03-30 ディスクカートリッジ及び信号記録再生装置

Publications (1)

Publication Number Publication Date
WO2000060595A1 true WO2000060595A1 (fr) 2000-10-12

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Application Number Title Priority Date Filing Date
PCT/JP2000/001877 WO2000060595A1 (fr) 1999-03-30 2000-03-27 Cartouche de disque et dispositif d'enregistrement et de reproduction de signaux

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JP (1) JP2000285628A (fr)
WO (1) WO2000060595A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03245361A (ja) * 1990-02-23 1991-10-31 Fuji Photo Film Co Ltd 静止画像再生装置
JPH06267232A (ja) * 1993-03-10 1994-09-22 Ricoh Co Ltd ディスクカートリッジ及びディスク記録／再生装置
US5513162A (en) * 1993-03-09 1996-04-30 Sony Corporation Recording apparatus having a function to prevent recording of a signal into a specific area of a recording medium
JPH0935456A (ja) * 1995-07-18 1997-02-07 Matsushita Electric Ind Co Ltd 記録再生装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03245361A (ja) * 1990-02-23 1991-10-31 Fuji Photo Film Co Ltd 静止画像再生装置
US5513162A (en) * 1993-03-09 1996-04-30 Sony Corporation Recording apparatus having a function to prevent recording of a signal into a specific area of a recording medium
JPH06267232A (ja) * 1993-03-10 1994-09-22 Ricoh Co Ltd ディスクカートリッジ及びディスク記録／再生装置
JPH0935456A (ja) * 1995-07-18 1997-02-07 Matsushita Electric Ind Co Ltd 記録再生装置

Also Published As

Publication number Publication date
JP2000285628A (ja) 2000-10-13

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