JPS62289999A - Data writing method - Google Patents

Data writing method

Info

Publication number
JPS62289999A
JPS62289999A JP13320686A JP13320686A JPS62289999A JP S62289999 A JPS62289999 A JP S62289999A JP 13320686 A JP13320686 A JP 13320686A JP 13320686 A JP13320686 A JP 13320686A JP S62289999 A JPS62289999 A JP S62289999A
Authority
JP
Japan
Prior art keywords
data
write
memory
data writing
writing method
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP13320686A
Other languages
Japanese (ja)
Inventor
Hideo Matsuoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP13320686A priority Critical patent/JPS62289999A/en
Publication of JPS62289999A publication Critical patent/JPS62289999A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To shorten the write time by not performing a write operation if data in a write area is the same as data to be written.
CONSTITUTION: When an IC card or the like provided with a data memory 1 like an E2PROM, a program memory 3, a control element 2, etc., is connected to a card reader/writer through a contact part 4, data in the write area is read before write to the memory 1, and the card reader/writer does not write data in the memory 1 if read data is the same as data to be written. Since unnecessary write is not performed, the write time is shortened.
COPYRIGHT: (C)1987,JPO&Japio
JP13320686A 1986-06-09 1986-06-09 Data writing method Pending JPS62289999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13320686A JPS62289999A (en) 1986-06-09 1986-06-09 Data writing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13320686A JPS62289999A (en) 1986-06-09 1986-06-09 Data writing method

Publications (1)

Publication Number Publication Date
JPS62289999A true JPS62289999A (en) 1987-12-16

Family

ID=15099210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13320686A Pending JPS62289999A (en) 1986-06-09 1986-06-09 Data writing method

Country Status (1)

Country Link
JP (1) JPS62289999A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01318132A (en) * 1988-06-20 1989-12-22 Fujitsu Ltd Data rewriting detecting circuit
WO2009084210A1 (en) * 2007-12-28 2009-07-09 Panasonic Corporation Information processing device
JP2011134389A (en) * 2009-12-24 2011-07-07 Samsung Electronics Co Ltd Control device for nonvolatile memory and method of operating control device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01318132A (en) * 1988-06-20 1989-12-22 Fujitsu Ltd Data rewriting detecting circuit
WO2009084210A1 (en) * 2007-12-28 2009-07-09 Panasonic Corporation Information processing device
US8131968B2 (en) 2007-12-28 2012-03-06 Panasonic Corporation Information processing device
JP2011134389A (en) * 2009-12-24 2011-07-07 Samsung Electronics Co Ltd Control device for nonvolatile memory and method of operating control device

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