Dynamic magnetic information storage or retrieval – General recording or reproducing – Recording-or erasing-prevention
Patent
1997-04-30
2000-02-29
Levy, Stuart S.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Recording-or erasing-prevention
360134, G11B 1504, G11B 578
Patent
active
060316756
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a recording medium device adapted so that a recording medium on which information signals are recorded such as a magnetic tape or an optical disc, etc. is accommodated within the cartridge body, and more particularly to a recording medium device provided with an erroneous recording prevention mechanism for preventing erasure of previously recorded information signals due to erroneous overwrite recording of information signals onto a recording medium accommodated within the cartridge body.
BACKGROUND OF THE INVENTION
Hitherto, in an information processing equipment for processing information signals such as computer, etc., an external storage (memory) unit is used for recording and retaining information signals which have been processed by this equipment, or recording information signals which are to be processed by the information processing equipment. For such an external storage unit, a recording/reproduction apparatus (unit) using a recording medium device adapted so that a recording medium on which information signals are recorded such as a magnetic tape or an optical disc, etc. is accommodated within the cartridge body.
A recording medium device in the form of a tape cartridge used in such a recording/reproduction unit is shown in FIG. 1. This tape cartridge 500 includes a cartridge body 501, a substantially rectangular cover member 502 formed by molding transparent synthetic resin material, e.g., polycarbonate resin, etc. and a base plate 503 joined to the cover member 502 by screws, etc. with the base plate 503 formed by a metal plate such as an aluminum plate, etc. Within the cartridge body 501, a pair of tape reels (not shown) are rotatably accommodated. Thus, a magnetic tape 504 withdrawn from one tape reel passes through the cartridge body 501 along the front portion 501a thereof, and is wound onto the other tape reel.
At one side of the front portion 501a of the tape cartridge 500, a cover body 505 is rotatably attached for opening/closing an opening portion for receiving a magnetic head which relatively comes into slidable contact with the magnetic tape 504 to perform recording and/or reproduction of information signals. Moreover, substantially at the central portion of the front portion 501a, an opening portion 507 is provided which allows the outer circumferential portion of a belt drive roller 506 for traveling the magnetic tape 504 at a constant velocity to extend outwardly therefrom. In addition, within the tape cartridge 500, an endless belt (not shown) for driving the tape reels is disposed. This endless belt is moved when the belt drive roller 506 is rotated.
In operation, when this tape cartridge 500 is loaded into the recording/reproducing unit as an auxiliary memory unit, the cover body 505 is opened. As a result, the magnetic head of the recording/reproduction unit side is received through the opening portion for recording/reproduction to lightly touch the signal recording surface of the magnetic tape 504. Moreover, a drive roller of the recording/reproduction unit side is inserted into the cartridge body 501 through the drive opening portion 507 provided at the front side of the cartridge body 501 to come into contact with the belt drive roller 506. Then, when the drive roller of the recording/reproduction unit is rotationally driven, the tape reels are rotated through the belt drive roller 506 so that the magnetic tape 504 moves at the contact velocity, whereby recording and/or reproduction of information signals are carried out by the magnetic head which is slidably in contact with the magnetic tape 504.
Meanwhile, this tape cartridge 500 includes an erroneous recording prevention mechanism 508 for preventing erasure of previously recorded information signals due to erroneous overwrite recording of information signals performed on the magnetic tape 504.
This erroneous recording prevention mechanism 508 includes, as shown in FIG. 2, an erroneous recording detection hole 509 provided at the cover member 502 and positioned at one
REFERENCES:
patent: 4044386 (1977-08-01), Satou et al.
patent: 4320421 (1982-03-01), Larson et al.
patent: 4460930 (1984-07-01), Takahashi
patent: 4607299 (1986-08-01), Oishi et al.
patent: 4734812 (1988-03-01), Tanaka et al.
patent: 4780783 (1988-10-01), Osawa et al.
patent: 4844377 (1989-07-01), Shiomi et al.
patent: 4860127 (1989-08-01), Takahashi et al.
patent: 4908725 (1990-03-01), Iwahashi
patent: 5184255 (1993-02-01), Lowry et al.
patent: 5218502 (1993-06-01), Tanaka et al.
patent: 5367422 (1994-11-01), Fujisawa et al.
patent: 5504644 (1996-04-01), Sasaki et al.
Meguro Hiroshi
Sanpei Takaaki
Frommer William S.
Kupstas Tod
Levy Stuart S.
Sony Corporation
LandOfFree
Recording medium device provided with erroneous recording preven does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recording medium device provided with erroneous recording preven, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording medium device provided with erroneous recording preven will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-688407