LV12636A - Fiscal storage provided with electrically programmable read-only permament memory - Google Patents

Fiscal storage provided with electrically programmable read-only permament memory

Info

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
Application number
LV000167A
Other languages
Latvian (lv)
Other versions
LV12636B (en
Inventor
Vladislavs Rudenko
Original Assignee
Hardware Design Sia Comp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hardware Design Sia Comp filed Critical Hardware Design Sia Comp
Priority to LVP-00-167A priority Critical patent/LV12636B/en
Publication of LV12636A publication Critical patent/LV12636A/en
Publication of LV12636B publication Critical patent/LV12636B/en

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).
LVP-00-167A 2000-12-04 2000-12-04 Fiscal storage provided with electrically programmable read-only permament memory LV12636B (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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