JPS6476465A - Error position detecting circuit - Google Patents
Error position detecting circuitInfo
- Publication number
- JPS6476465A JPS6476465A JP23201787A JP23201787A JPS6476465A JP S6476465 A JPS6476465 A JP S6476465A JP 23201787 A JP23201787 A JP 23201787A JP 23201787 A JP23201787 A JP 23201787A JP S6476465 A JPS6476465 A JP S6476465A
- Authority
- JP
- Japan
- Prior art keywords
- error
- time point
- syndrome
- output
- inclining
- 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.)
- Granted
Links
Abstract
PURPOSE:To improve error correcting ability by providing a circuit to investigate an inclining parity syndrome and a vertical parity syndrome, early detecting an error channel and detecting an unknown error channel again. CONSTITUTION:When a selector 4 is activated by the output of a latch circuit 1, a step '1' to be the nearest to the top step is extracted from the contents of a syndrome register and even when there is the step '1' to be lower than it, it is suppressed. The output to be obtained in such a way obtains a first error track number (j) corresponding to the bit position when there is the first '1'. In such a case, the first error track number (j) is obtained at the time point of a bit position (m) and second detection is started from the time point of m+1 and the arbitrary second error position detection of an inclining line can be executed. Thus, the first error track is determined early and as the result, a range, in which the second error can be properly detected, is enlarged.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232017A JPH0831257B2 (en) | 1987-09-18 | 1987-09-18 | Error position detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232017A JPH0831257B2 (en) | 1987-09-18 | 1987-09-18 | Error position detection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6476465A true JPS6476465A (en) | 1989-03-22 |
JPH0831257B2 JPH0831257B2 (en) | 1996-03-27 |
Family
ID=16932653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62232017A Expired - Lifetime JPH0831257B2 (en) | 1987-09-18 | 1987-09-18 | Error position detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0831257B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02278575A (en) * | 1989-04-19 | 1990-11-14 | Fujitsu Ltd | Ecc control system at time of backward read |
JP2003317400A (en) * | 2003-02-14 | 2003-11-07 | Fujitsu Ltd | Controller for magnetic tape unit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5488109A (en) * | 1977-12-23 | 1979-07-13 | Ibm | Error corrector |
-
1987
- 1987-09-18 JP JP62232017A patent/JPH0831257B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5488109A (en) * | 1977-12-23 | 1979-07-13 | Ibm | Error corrector |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02278575A (en) * | 1989-04-19 | 1990-11-14 | Fujitsu Ltd | Ecc control system at time of backward read |
JP2003317400A (en) * | 2003-02-14 | 2003-11-07 | Fujitsu Ltd | Controller for magnetic tape unit |
Also Published As
Publication number | Publication date |
---|---|
JPH0831257B2 (en) | 1996-03-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment |
Free format text: PAYMENT UNTIL: 20080327 Year of fee payment: 12 |