LV12636A - Fiscal storage provided with electrically programmable read-only permament memory - Google Patents
Fiscal storage provided with electrically programmable read-only permament memoryInfo
- Publication number
- LV12636A LV12636A LV000167A LV000167A LV12636A LV 12636 A LV12636 A LV 12636A LV 000167 A LV000167 A LV 000167A LV 000167 A LV000167 A LV 000167A LV 12636 A LV12636 A LV 12636A
- Authority
- LV
- Latvia
- Prior art keywords
- erase
- fiscal
- memory
- programmable read
- flash memory
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/12—Cash registers electronically operated
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Read Only Memory (AREA)
Abstract
An invention relates to design of fiscal memory and it can be used in cash registers and systems of sale terminals. According to an invention, an electrical programmable read-only permanent memory, e.g., a flash memory chip, is used as a data storage in fiscal memory. Said electrically programmable read-only permanent memory is erase-protected by a circuit comprising non-programmable logical chips. Preferably, said erase-protecting circuit comprises two non-programmable logical chips at the most. The drawing shows a part of fiscal memory circuit with a flash memory chip as a data storage (unit 1). The flash memory chip is compatible with JEDEC 21-C standard and has separate write and erase commands. For example, ATMEL AT49F040 or AMD Am29F040B may be used. The erase-protecting circuit (unit 2) which protects flash memory chip from erase command, is implemented by two simple logical chips 74HC32 (K555KB1) and 74HC164 (K555BH8).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LVP-00-167A LV12636B (en) | 2000-12-04 | 2000-12-04 | Fiscal storage provided with electrically programmable read-only permament memory |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LVP-00-167A LV12636B (en) | 2000-12-04 | 2000-12-04 | Fiscal storage provided with electrically programmable read-only permament memory |
Publications (2)
Publication Number | Publication Date |
---|---|
LV12636A true LV12636A (en) | 2001-03-20 |
LV12636B LV12636B (en) | 2001-06-20 |
Family
ID=19735233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
LVP-00-167A LV12636B (en) | 2000-12-04 | 2000-12-04 | Fiscal storage provided with electrically programmable read-only permament memory |
Country Status (1)
Country | Link |
---|---|
LV (1) | LV12636B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7523320B2 (en) | 2003-04-22 | 2009-04-21 | Seiko Epson Corporation | Fiscal data recorder with protection circuit and tamper-proof seal |
-
2000
- 2000-12-04 LV LVP-00-167A patent/LV12636B/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7523320B2 (en) | 2003-04-22 | 2009-04-21 | Seiko Epson Corporation | Fiscal data recorder with protection circuit and tamper-proof seal |
US7913097B2 (en) | 2003-04-22 | 2011-03-22 | Seiko Epson Corporation | Fiscal data recorder programmed to write only non-blank values to memory |
Also Published As
Publication number | Publication date |
---|---|
LV12636B (en) | 2001-06-20 |
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