JPS56111957A - Data filing device - Google Patents

Data filing device

Info

Publication number
JPS56111957A
JPS56111957A JP1514080A JP1514080A JPS56111957A JP S56111957 A JPS56111957 A JP S56111957A JP 1514080 A JP1514080 A JP 1514080A JP 1514080 A JP1514080 A JP 1514080A JP S56111957 A JPS56111957 A JP S56111957A
Authority
JP
Japan
Prior art keywords
data
length
write
sector
turned
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
JP1514080A
Other languages
Japanese (ja)
Inventor
Hisashi Matsumura
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer Co Ltd
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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP1514080A priority Critical patent/JPS56111957A/en
Publication of JPS56111957A publication Critical patent/JPS56111957A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor

Abstract

PURPOSE:To simplify the constitution of a write/read circuit, by making a residual part produced by dividing a length of write data by the length of sector to blank data in a data recording system in which the length of the record data has an integer-fold value compared with that of the sector. CONSTITUTION:The record length is set to the data length counter 1 from the CPU during a writing of data, and the counter 1 is counted down with every input of the data. When the count value becomes zero, the data write gate 4 is turned off with the dummy write gates 1 and 2 turned on. The gate 2 is turned off when the sector counter has a value of (sector length)-(CRC code length), and thus the CRC code is written. When reading the data, the read data READDATA is converted into a parallel form through the serial-parallel converter 11 and at the same time receives an error check at the CRC control part 10 to be sent to the CPU. Thus the data read/write process is possible with a simple hardware and without having any special program process.
JP1514080A 1980-02-09 1980-02-09 Data filing device Pending JPS56111957A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1514080A JPS56111957A (en) 1980-02-09 1980-02-09 Data filing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1514080A JPS56111957A (en) 1980-02-09 1980-02-09 Data filing device

Publications (1)

Publication Number Publication Date
JPS56111957A true JPS56111957A (en) 1981-09-04

Family

ID=11880503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1514080A Pending JPS56111957A (en) 1980-02-09 1980-02-09 Data filing device

Country Status (1)

Country Link
JP (1) JPS56111957A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107133A (en) * 1983-11-16 1985-06-12 Fujitsu Ltd Information transfer method of magnetic disc device
JPS61172340U (en) * 1985-04-10 1986-10-25
JPH01260672A (en) * 1988-04-11 1989-10-17 Canon Inc Data recorder
JPH01260671A (en) * 1988-04-11 1989-10-17 Canon Inc Data recorder
JP2000200153A (en) * 1999-01-07 2000-07-18 Nec Corp Data transfer system and data transfer method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49131645A (en) * 1973-04-13 1974-12-17
JPS5676861A (en) * 1979-11-27 1981-06-24 Toshiba Corp Floppy disk controller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49131645A (en) * 1973-04-13 1974-12-17
JPS5676861A (en) * 1979-11-27 1981-06-24 Toshiba Corp Floppy disk controller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107133A (en) * 1983-11-16 1985-06-12 Fujitsu Ltd Information transfer method of magnetic disc device
JPS61172340U (en) * 1985-04-10 1986-10-25
JPH01260672A (en) * 1988-04-11 1989-10-17 Canon Inc Data recorder
JPH01260671A (en) * 1988-04-11 1989-10-17 Canon Inc Data recorder
JP2000200153A (en) * 1999-01-07 2000-07-18 Nec Corp Data transfer system and data transfer method

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