US4718044A
Expired / Lapsed
US
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Electronic apparatus having plural detachable memories
Assignee: Canon Inc
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Filing: 1984-01-20
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Granted: 1988-01-05
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Expires: 2004-01-20
Abstract
Abstract A personal computer or the like having plural detachable external memories wherein the efficiency of use of such external memories is improved by the fact that the addresses allotted to each of the plural external memories are rendered variable.
Inventors
- 👤 Shigeru Matsuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:15
CPC Classifications
G; G06; G06F; G06F12/00; G06F12/02; G06F12/06; G06F12/0646; G06F12/0653; G06F12/0661; G06F12/0684; G11; G11C; G11C8/00; G11C8/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
In an information processing apparatus having a central processing unit including input means and an addressable read-write memory, an address designator for plural detachable memories enabling said apparatus to handle different types of read-write or read only addressable memory means, comprising: addressable read-write memory means; reception means for receiving a different type of detachable memory means to be detachably disposed with respect to the information processing apparatus; discrimination means for discriminating the type of the detachable memory means; and allotment means for allotting the next succeeding address of said read-write memory means, to the detachable memory received by said reception means when said discrimination means determines it is a read-write memory, and for allotting an address not succeeding the address of said read-write memory, to the detachable memory means received by said reception means when said discrimination means determines it is a read only memory.
Claim 2
Dependent Claim
145 words
In an information processing apparatus having a central processing unit including input means and an addressable read-write memory, an address designator for plural detachable memories enabling said apparatus to handle different types of read-write or read only addressable memory means, comprising: addressable read-write memory means; reception means for receiving a different type of detachable memory means to be detachably disposed with respect to the information processing apparatus; discrimination means for discriminating the type of the detachable memory means; and allotment means for allotting the next succeeding address of said read-write memory means, to the detachable memory received by said reception means when said discrimination means determines it is a read-write memory, and for allotting an address not succeeding the address of said read-write memory, to the detachable memory means received by said reception means when said discrimination means determines it is a read only memory.
Claim 3
Dependent Claim
23 words
An information processing apparatus according to claim 1, wherein said reception means receives a plurality of independent memory meansof one or more types.
Claim 4
Dependent Claim
24 words
An information processing apparatus according to claim 1, wherein said discrimination means comprises switch means for discriminating a type of said detachable memory means.
Claim 5
Dependent Claim
110 words
In an information processing apparatus having a central processing unit including input means and an addressable read-write memory, an address designator for plural detachable read-write or read only addressable memory means enabling said apparatus to handle different types of said read-write or read only addressable memory means, comprising: reception means for detachably receiving said detachable read-write or read only addressable memory means; discrimination means for discriminating the types of said read-write or read only addressable memory means received by said reception means; and allotment means for allotting a different address to said read-write or read only addressable memory means, on the basis of a discrimination result of said discrimination means.
Claim 6
Dependent Claim
110 words
In an information processing apparatus having a central processing unit including input means and an addressable read-write memory, an address designator for plural detachable read-write or read only addressable memory means enabling said apparatus to handle different types of said read-write or read only addressable memory means, comprising: reception means for detachably receiving said detachable read-write or read only addressable memory means; discrimination means for discriminating the types of said read-write or read only addressable memory means received by said reception means; and allotment means for allotting a different address to said read-write or read only addressable memory means, on the basis of a discrimination result of said discrimination means.
Claim 7
Dependent Claim
20 words
An information processing apparatus according to claim 4, wherein said reception means receives read-only memory means and read-write memory means.
Claim 8
Dependent Claim
24 words
An information processing aparatus according to claim 4, wherein said reception means receives a plurality of independent memory means of one or more types.
Claim 9
Dependent Claim
24 words
An information processing apparatus according to claim 4, wherein said discrimination means comprises switch means for disriminating the type of said detachable memory means.
Claim 10
Dependent Claim
46 words
An information processing apparatus according to claim 6, wherein said allotment means allots an address to said detachable memory means in accordance with the respective type of said plurality of independent memory means when a plurality of detachable memory means are received by said reception means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |