US4893236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic cash register
Assignee: Sharp Corp
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Filing: 1987-07-31
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Granted: 1990-01-09
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Expires: 2007-07-31
Abstract
Abstract An electronic cash register comprising a key input device having a plurality of operation keys, a file structured memory unit whose memory region is divided into a plurality of file storage regions for storing a plurality of different types of accumulated data, and a control unit for controlling the key input device and the memory unit. The control unit controls the memory unit so as to change the space allocation of a desired file storage region, generate a required file storage region, or erase a predetermined storage region.
Inventors
- 👤 Souichi Ohnishi
- 👤 Yasuhide Nakamura
- 👤 Kensaku Komai
- 👤 Kazuyuki Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
G; G07; G07G; G07G1/00; G07G1/12; G06; G06Q; G06Q20/00; G06Q20/08; G06Q20/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
An electronic cash register, comprising: key input means having a plurality of operation keys; file structured memory means divided into a plurality of file storage regions for storing a plurality of different types of accumulated data; control means for controlling said key input means and said memory means; and wherein said control means controls said memory means so as to change the space allocation of a predetermined file storage region, generate a space allocation for a required file storage region or erase the space allocation for a selected file storage region in the memory means.
Claim 2
Dependent Claim
95 words
An electronic cash register, comprising: key input means having a plurality of operation keys; file structured memory means divided into a plurality of file storage regions for storing a plurality of different types of accumulated data; control means for controlling said key input means and said memory means; and wherein said control means controls said memory means so as to change the space allocation of a predetermined file storage region, generate a space allocation for a required file storage region or erase the space allocation for a selected file storage region in the memory means.
Claim 3
Dependent Claim
18 words
The electronic cash register of claim 1, wherein there is no space between immediately adjacent file storage regions.
Claim 4
Dependent Claim
24 words
The electronic cash register of claim 1, wherein each of said file storage regions include a file descriptor region and a file data region.
Claim 5
Dependent Claim
32 words
The electronic cash register of claim 3, wherein said file descriptor region stores start address, end address and data structure of said file data region for a respective said file storage region.
Claim 6
Dependent Claim
17 words
The electronic cash register of claim 4 wherein said file descriptor region has a fixed space allocation.
Claim 7
Dependent Claim
18 words
The electronic cash register of claim 5 and wherein said file data region has a variable space allocation.
Claim 8
Dependent Claim
141 words
An electronic cash register, comprising: key input means having a plurality of operation keys; file structured memory means divided into a plurality of file storage regions for storing a plurality of different types of accumulated data; control means for controlling said key input means and said memory means; wherein said control means controls said memory means so as to change the space allocation of a predetermined file storage region, generate a space allocation for a required file storage region or erase the space allocation for a selected file storage region in the memory means; each of said file storage regions further including a file descriptor region and a file data region; and wherein said file descriptor region for each file storage region stores start address, end address and data structure of said file data region for the respective file storage region.
Claim 9
Dependent Claim
141 words
An electronic cash register, comprising: key input means having a plurality of operation keys; file structured memory means divided into a plurality of file storage regions for storing a plurality of different types of accumulated data; control means for controlling said key input means and said memory means; wherein said control means controls said memory means so as to change the space allocation of a predetermined file storage region, generate a space allocation for a required file storage region or erase the space allocation for a selected file storage region in the memory means; each of said file storage regions further including a file descriptor region and a file data region; and wherein said file descriptor region for each file storage region stores start address, end address and data structure of said file data region for the respective file storage region.
Claim 10
Dependent Claim
27 words
The electronic cash register of claim 7 wherein said file descriptor region has a fixed space allocation and said file data region has a variable space allocation.
References Cited (Backward Citations)
US4419738A
Cited
US4360872A
Cited
US4564904A
Cited
US4328544A
Cited
EP0058803A1
Cited
EP0072219A2
Cited
EP0114261A2
Cited
US4649481A
Cited
EP0157342A2
Cited
US4729097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |