EP0191410A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of transmitting digital data
Assignee: Hitachi Ltd
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Filing: 1986-02-05
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Granted: —
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Expires: 2006-02-05
Abstract
Abstract In a method of transmitting digital data including the steps of constructing one block by a plurality of digital data, constructing one frame by a plurality of blocks, adding two kinds of mutually different error detection and correction codes to these blocks and transmitting these digital data together with the codes that are added, the digital data are not interleaved, only the error detection and correction codes are interleaved and these interleaved codes are added to the digital data.
Inventors
- 👤 Masahiro Itoh
- 👤 Masaharu Kobayashi
- 👤 Takao Arai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 16:43
CPC Classifications
H; H03; H03M; H03M13/00; H03M13/27; H03M13/276; H03M13/2764; G; G11; G11B; G11B20/00; G11B20/10; G11B20/18; G11B20/1806; G11B20/1809; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; H04N5/9265; H04N5/9267
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
A method of transmitting digital data including the steps of: constructing one block by a plurality and predetermined number of digital data; constructing one frame by a plurality and predetermined number of said blocks; generating first and second check codes capable of at least detecting errors from different combinations of a plurality of digital data in said blocks of said frame; adding said check codes to said frame; and transmitting said digital data together with said check does, said method comprising the steps of: arrainging a predetermined number of digital data to be transmitted in a digital data area inside each of said blocks in the order of generation of said digital data; and generating a plurality of said first check codes from a plurality of digital data in the same block.
Claim 2
Independent Claim
132 words
A method of transmitting digital data including the steps of: constructing one block by a plurality and predetermined number of digital data; constructing one frame by a plurality and predetermined number of said blocks; generating first and second check codes capable of at least detecting errors from different combinations of a plurality of digital data in said blocks of said frame; adding said check codes to said frame; and transmitting said digital data together with said check does, said method comprising the steps of: arrainging a predetermined number of digital data to be transmitted in a digital data area inside each of said blocks in the order of generation of said digital data; and generating a plurality of said first check codes from a plurality of digital data in the same block.
Claim 3
Dependent Claim
37 words
A method of transmitting digital data according to claim 1 which further comprises the step of generating a plurality of said second check codes from a plurality of digital data existing in a non-linear delay block distance.
Claim 4
Dependent Claim
103 words
A method of transmitting digital data according to claim 1 which further comprises the step of: arranging a plurality of said first check codes in a plurality of said blocks, respectively, in such a fashion that the distance of delay blocks of adjacent codes of a plurality of said first check codes does not exceed the minimum value of the distance of delay blocks of adjacent digital data among said digital data used for generating said second check codes, and the distance of delay blocks between the first to the last of a plurality of said first check codes is at least 2.
Claim 5
Dependent Claim
103 words
A method of transmitting digital data according to claim 2 which further comprises the steps of: arranging a plurality of said first check codes in a plurality of said blocks, respectively, in such a fashion that the distance of delay blocks of adjacent codes of a plurality of said first check codes does not exceed the minimum value of the distance of delay blocks of adjacent digital data among said digital data used for generating said second check codes, and the distance of delay blocks between the first to the last of a plurality of said first check codes is at least 2.
Claim 6
Dependent Claim
102 words
A method of transmitting digital data according to claim 1 which further comprises the following steps when the distance of delay blocks from the first to the last of a plurality of said first check codes is n (n Z 2): recording superposedly a frame containing said first and second check codes on another frame that has already been recorded on a recording medium; and judging, as errors, (n - 1) blocks among said blocks that are reproduced from an unerased area inside said another pre-recorded-frame during the reproduction of said frame thus recorded, on the basis of said first check codes.
Claim 7
Dependent Claim
103 words
A method of transmitting digital data according to claim 2 which further comprises the following steps when the distance of delay blocks from the first to the last of a plurality of said first check codes is n (n ≧ 2): recording superposedly a frame containing said first and second check codes on another frame that has already been recorded on a recording medium; and judging, as errors, (n - 1) blocks among said blocks that are reproduced from an unerased area inside said another pre-recorded frame during the reproduction of said frame thus recorded, on the basis of said first check codes.
Claim 8
Dependent Claim
103 words
A method of transmitting digital data according to claim 3 which further comprises the following steps when the distance of delay blocks from the first to the last of a plurality of said first check codes is n (n ≧ 2): recording superposedly a frame containing said first and second check codes on another frame that has already been recorded on a recording medium; and judging, as errors, (n - 1) blocks among said blocks that are reproduced from an unerased area inside said another pre-recorded frame during the reproduction of said frame thus rocorded, on the basis of said first check codes.
Claim 9
Dependent Claim
103 words
A method of transmitting digital data according to claim 4 which further comprises the following steps when the distance of delay blocks from the first to the last of a plurality of said first check codes is n (n a 2): recording superposedly a frame containing said first and second check codes on another frame that has already been recorded on a recording medium; and judging, as errors, (n - 1) blocks among said blocks that are reproduced from an unerased area inside said another pre-recorded frame during the reproduction of said frame thus recorded, on the basis of said first check codes.
References Cited (Backward Citations)
No citation records indexed.
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