GB1248830A – Improvements in or relating to error correction in coded messages
– Google Patents
GB1248830A – Improvements in or relating to error correction in coded messages
– Google Patents
Improvements in or relating to error correction in coded messages
Info
Publication number
GB1248830A
GB1248830A
GB42880/69A
GB4288069A
GB1248830A
GB 1248830 A
GB1248830 A
GB 1248830A
GB 42880/69 A
GB42880/69 A
GB 42880/69A
GB 4288069 A
GB4288069 A
GB 4288069A
GB 1248830 A
GB1248830 A
GB 1248830A
Authority
GB
United Kingdom
Prior art keywords
parity
line
streams
bit
modulo
Prior art date
1968-09-04
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.)
Expired
Application number
GB42880/69A
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.)
Motorola Solutions Inc
Original Assignee
Codex 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.)
1968-09-04
Filing date
1969-08-28
Publication date
1971-10-06
1969-08-28
Application filed by Codex Corp
filed
Critical
Codex Corp
1971-10-06
Publication of GB1248830A
publication
Critical
patent/GB1248830A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L1/00—Arrangements for detecting or preventing errors in the information received
H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
H04L1/0056—Systems characterized by the type of code used
H04L1/0059—Convolutional codes
Abstract
1,248,830. Error correcting arrangement. CODEX CORP. 28 Aug., 1969 [4 Sept., 1968], No. 42880/69. Heading G4A. There is provided an encoder and a decoder by which burst errors in a channel can be corrected. In Fig. 1, information bits at the encoder are divided (at least notionally) into streams I 1 , I 2 , I 3 and a combination line 20, which includes delay units, forms a stream of parity bits P. To detect error bursts extending over X or fewer time intervals, where a time interval includes a digit from each of streams I 1 , I 2 , I 3 , P, each bit of streams I 1 , I 2 , I 3 forms part of two separate parity bits, each separated by at least X time intervals but not more than 2X intervals, the separation for each stream being different. For example, at time 4X+2, the parity bit P equals I
GB42880/69A
1968-09-04
1969-08-28
Improvements in or relating to error correction in coded messages
Expired
GB1248830A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US75732368A
1968-09-04
1968-09-04
Publications (1)
Publication Number
Publication Date
GB1248830A
true
GB1248830A
(en)
1971-10-06
Family
ID=25047365
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB42880/69A
Expired
GB1248830A
(en)
1968-09-04
1969-08-28
Improvements in or relating to error correction in coded messages
Country Status (5)
Country
Link
US
(1)
US3566352A
(en)
DE
(1)
DE1944963A1
(en)
FR
(1)
FR2017371A1
(en)
GB
(1)
GB1248830A
(en)
NL
(1)
NL6913520A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2441216A1
(en)
*
1978-11-01
1980-06-06
Minnesota Mining & Mfg
CIRCUIT FOR PROCESSING DIGITAL SIGNALS TO BE RECORDED ON A SINGLE TRACK OF A RECORDING MEDIUM
US4254500A
(en)
*
1979-03-16
1981-03-03
Minnesota Mining And Manufacturing Company
Single track digital recorder and circuit for use therein having error correction
Families Citing this family (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3697947A
(en)
*
1970-10-31
1972-10-10
American Data Systems Inc
Character correcting coding system and method for deriving the same
NL7804673A
(en)
*
1978-05-02
1979-11-06
Philips Nv
SYSTEM FOR TRANSFERRING BINARY INFORMATION ON SOME CHANNELS
WO1981003590A1
(en)
*
1980-05-30
1981-12-10
Vinnitsky Politekhn Inst
Converter of p-codes into analog values
BE890280A
(en)
*
1981-09-09
1982-03-09
Belge Lampes Mat Electr Mble
ENCODING AND DECODING DEVICE BASED ON A CONVOLUTION CODE
1968
1968-09-04
US
US757323A
patent/US3566352A/en
not_active
Expired – Lifetime
1969
1969-08-28
GB
GB42880/69A
patent/GB1248830A/en
not_active
Expired
1969-09-04
DE
DE19691944963
patent/DE1944963A1/en
active
Pending
1969-09-04
FR
FR6930151A
patent/FR2017371A1/fr
not_active
Withdrawn
1969-09-04
NL
NL6913520A
patent/NL6913520A/xx
unknown
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2441216A1
(en)
*
1978-11-01
1980-06-06
Minnesota Mining & Mfg
CIRCUIT FOR PROCESSING DIGITAL SIGNALS TO BE RECORDED ON A SINGLE TRACK OF A RECORDING MEDIUM
US4254500A
(en)
*
1979-03-16
1981-03-03
Minnesota Mining And Manufacturing Company
Single track digital recorder and circuit for use therein having error correction
Also Published As
Publication number
Publication date
US3566352A
(en)
1971-02-23
NL6913520A
(en)
1970-03-06
FR2017371A1
(en)
1970-05-22
DE1944963A1
(en)
1970-03-12
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None