EP0082774A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Cassette-type magnetic-bubble memory apparatus
Assignee: Fujitsu Ltd
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Filing: 1982-12-16
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Granted: —
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Expires: 2002-12-16
Abstract
Abstract A cassette-type magnetic-bubble memory apparatus comprising a bubble cassette (1) which houses a bubble memory device and a main apparatus which comprises a holder (5) into which the cassette is inserted. The contacts (26) of the holder contact the contacts (2) of the cassette in cooperation with the action of inserting the cassette into the holder so that current flows into the bubble memory device. The main apparatus comprises a detectoring means (15, 28) for detecting the action of inserting and withdrawing the cassette. The circuit for controlling the current introduced into the magnetic-bubble memory device is constructed so that the current is introduced after the contacts (2) of the cassette and the contacts (26) of the holder (5) are connected and is interrupted before the contacts (2) of the cassette and the contacts (26) of the holder (5) are disconnected.
Inventors
- 👤 Hirosi Hasegawa
- 👤 Tatsuro Onuma
- 👤 Norio Matsubayashi
- 👤 Masayoshi Tamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 05:31
CPC Classifications
H; H05; H05K; H05K5/00; H05K5/02; H05K5/0256; H05K5/026; G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/085; H05K5/0286
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A cassette-type magnetic-bubble memory apparatus comprising a bubble cassette which houses a bubble memory device and a main apparatus which comprises a holder into which said cassette is inserted, the contacts of said holder contacting the contacts of said cassette in cooperation with the action of inserting said cassette into said holder so that current flows into said bubble memory device, characterized in that said main apparatus comprises a detecting means for detecting the action of inserting and withdrawing said cassette and in that the circuit for controlling the current introduced into said magnetic-bubble memory device is constructed so that the current is introduced after said contacts of said cassette and said contacts of said holder are connected and is interrupted before said contacts of said cassette and said contacts of said holder are disconnected.
Claim 2
Dependent Claim
135 words
A cassette-type magnetic-bubble memory apparatus comprising a bubble cassette which houses a bubble memory device and a main apparatus which comprises a holder into which said cassette is inserted, the contacts of said holder contacting the contacts of said cassette in cooperation with the action of inserting said cassette into said holder so that current flows into said bubble memory device, characterized in that said main apparatus comprises a detecting means for detecting the action of inserting and withdrawing said cassette and in that the circuit for controlling the current introduced into said magnetic-bubble memory device is constructed so that the current is introduced after said contacts of said cassette and said contacts of said holder are connected and is interrupted before said contacts of said cassette and said contacts of said holder are disconnected.
Claim 3
Dependent Claim
152 words
A cassette-type magnetic-bubble memory apparatus as set forth in claim 1, characterized in that said holder comprises a case for receiving said cassette, said case being rotatable about an axis perpendicular to the insertion direction of said cassette, a cassette locking means is provided so as to lock said cassette within said holder in cooperation with the rotation of said case, a case locking means is provided so as to elastically lock said case at the end of rotation of said case, and said contacts of said cassette are connected to said contacts of said holder before the rotation of said case is stopped when said cassette is to be inserted into said holder and are disconnected from said contacts of said holder after the rotation of said case is started when said cassette is to be withdrawn and in that said detecting means detects the movement of said case locking means.
Claim 4
Dependent Claim
56 words
A cassette-type magnetic-bubble memory apparatus as set forth in claim 2, characterized in that said case locking means comprises a shutter plate and in that said detecting means is a photo-interrupter which comprises a light-emitting element disposed on one side of said shutter plate and a photo-sensor disposed on the other side of said shutter plate.
Claim 5
Dependent Claim
66 words
A cassette-type magnetic-bubble memory apparatus as set forth in claim 2, characterized in that said cassette comprises a cover for covering said contacts, which cover is slidable on the contact surface, is kept closed by a resilient means when said cassette is not in said main apparatus, and opens in cooperation with the action of inserting said cassette, against the closing force of said resilient means.
Claim 6
Dependent Claim
50 words
A cassette-type magnetic-bubble memory apparatus as set forth in claim 2, said contacts of said cassette being constructed so that at least one contact of the ground line is connected to a contact of said holder before other contacts of said cassette are connected to said contacts of said holder.
References Cited (Backward Citations)
No citation records indexed.
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