Patent EP1505598A1 successfully refreshed from Google Patents.
EP1505598A1
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EP
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Data recording medium, data recording method and device, and encode method and device
Assignee: Sony Corp
•
Filing: 2003-05-12
•
Granted: —
•
Expires: 2023-05-12
Abstract
Abstract A recording method for converting m-bit data into n-bit (where n > m) data whose run length is restricted and recording the converted data on a recording medium, the recording method comprising the step of selecting first n-bit data according to an immediately preceded n-bit data, first n-bit data immediately followed thereby, and second n-bit data immediately followed thereby so that the cumulative value of DC components per unit time becomes small.
Inventors
- 👤 Yoichiro C/O Sony Corporation Sako
- 👤 Toru c/o SONY DISC TECHNOLOGY INC. AIDA
- 👤 Tatsuya C/O SONY CORPORATION INOKUCHI
- 👤 Akiya c/o SONY DISC TECHNOLOGY INC. SAITO
- 👤 Takashi C/O SONY HUMAN CAPITAL CORPORATION KIHARA
- 👤 Tatsushi C/O SONY CORPORATION SANO
- 👤 Yoriaki c/o SONY CORPORATION KANADA
- 👤 Yoshiro C/O SONY CORPORATION MIYOSHI
- 👤 Shunsuke c/o SONY CORPORATION FURUKAWA
- 👤 Yoshinobu c/o SONY DISC TECHNOLOGY INC. USUI
- 👤 Toshihiko C/O SONY DISC TECHNOLOGY INC. SENNO
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:41
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; H; H03; H03M; H03M7/00; H03M7/30; H03M7/46; G11B20/00086; G11B20/14; G11B20/1403; G11B20/1423; G11B20/1426; H03M5/00; H03M5/02; H03M5/04; H03M5/14; H03M5/145; G11B20/12; G11B2020/1264; G11B2020/1265; G11B2020/1287; G11B2020/1457; G11B2020/1461; G11B2020/1469; G11B20/18; G11B20/1833; G11B2020/1836; G11B2020/184
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
153 words
A recording method for converting m-bit data
into an n-bit (where n > m) data symbol whose run
length is restricted and placing a connection bit after
the m-bit data symbol so that the cumulative value of
DC components per unit time becomes small, the
recording method comprising the steps of: selecting a first connection bit to be added
to an immediately preceded data symbol from a plurality
of connection bits according to at least one first
connection bit that can be added between the
immediately preceded data symbol and a first data
symbol immediately followed thereby and according to at
least one second connection bit that can be added
between the first data symbol and at least one second
data symbol immediately followed thereby; adding the selected first connection bit to
the immediately preceded data symbol so as to generate
record data; and recording the generated record data on a
recording medium.
Claim 2
Dependent Claim
97 words
The recording method as set forth in claim 1, wherein the selecting step comprises the
steps of: selecting at least one first connection bit
that can be added between the immediately preceded data
symbol and the first data symbol immediately followed
thereby; selecting at least one second connection bit
that can be added between the first data symbol and at
least one second data symbol immediately followed
thereby; and selecting the first connection bit from the
selected first connection bit and the selected second
connection bit so that the cumulative value of the DC
components becomes small.
Claim 3
Dependent Claim
49 words
The recording method as set forth in claim 2, wherein the first connection bit selecting
step is performed by selecting the first connection bit
so that. when the selected first connection bit and the
selected second connection bit are combined, the
cumulative value of the DC components becomes small.
Claim 4
Dependent Claim
164 words
A recording method for converting m-bit data
into an n-bit (where n > m) data symbol whose run
length is restricted and adding a connection bit after
the m-bit data symbol so that the cumulative value of
DC components per unit time becomes small, the
recording method comprising the steps of: when an immediately preceded data symbol is a
special data symbol, selecting a first connection bit
to be added to the immediately preceded data symbol
from a plurality of connection bits according to at
least one first connection bit that can be added
between the immediately preceded data symbol and a
first data symbol immediately followed thereby and
according to at least one second connection bit that
can be added between the first data symbol and at least
one second data symbol immediately followed thereby; adding the selected first connection bit to
the immediately preceded data symbol so as to generate
record data; and recording the generated record data on a
recording medium.
Claim 5
Dependent Claim
97 words
The recording method as set forth in claim 4, wherein the selecting step comprises the
steps of: selecting at least one first connection bit
that can be added between the immediately preceded data
symbol and the first data symbol immediately followed
thereby; selecting at least one second connection bit
that can be added between the first data symbol and at
least one second data symbol immediately followed
thereby; and selecting the first connection bit from the
selected first connection bit and the selected second
connection bit so that the cumulative value of the DC
components becomes small.
Claim 6
Dependent Claim
49 words
The recording method as set forth in claim 5, wherein the first connection bit selecting
step is performed by selecting the first connection bit
so that when the selected first connection bit and the
selected second connection bit are combined, the
cumulative value of the DC components becomes small.
Claim 7
Dependent Claim
52 words
The recording method as set forth in claim 4, wherein when the first data symbol is
selected according to the immediately preceded data
symbol and the first data symbol, with the special data
symbol, the second connection bit added between the
first data symbol and the second data symbol is
unconditionally selected.
Claim 8
Dependent Claim
21 words
The recording method as set forth in claim 4, wherein the m-bit data is modulated according
to the 8-14 modulating system.
Claim 9
Dependent Claim
72 words
A recording method for converting m-bit data
into n-bit (where n > m) data whose run length is
restricted and recording the converted data on a
recording medium, the recording method comprising the
step of: selecting first n-bit data according to an
immediately preceded n-bit data, first n-bit data
immediately followed thereby, and second n-bit data
immediately followed thereby so that the cumulative
value of DC components per unit time becomes small.
Claim 10
Dependent Claim
119 words
The recording method as set forth in claim 9, wherein the n-bit data is composed of an n1-bit
data symbol and n2-bit (= n - n1) connection bits
immediately followed thereby and selected from a
plurality of connection bits so that the cumulative
value of DC components per unit time becomes small, and wherein the recording method further
comprises the step of: selecting a first connection bit to be added
to the immediately preceded data symbol according to at
least one connection bit that can be added between the
immediately preceded data symbol and the first data
symbol and at least one second connection bit that can
be added between the first data symbol and the second
data symbol.
Claim 11
Dependent Claim
91 words
The recording method as set forth in claim 10, wherein the selecting step comprises the
steps of: selecting at least one first connection bit
that can be added between the immediately preceded data
symbol and the first data symbol immediately followed
thereby; selecting at least one second connection bit
that can be added between the first data symbol and the
second data symbol; and selecting the first connection bit from the
selected first connection bit and the second connection
bit so that the cumulative value of the DC components
becomes small.
Claim 12
Dependent Claim
49 words
The recording method as set forth in claim 11, wherein the first connection bit selecting
step is performed by selecting the first connection bit
so that when the selected first connection bit and the
selected second connection bit are combined, the
cumulative value of the DC components becomes small.
Claim 13
Dependent Claim
21 words
The recording method as set forth in claim 9, wherein the m-bit data is modulated according
to the 8-14 modulating system.
Claim 14
Dependent Claim
21 words
The recording method as set forth in claim 9, wherein the m-bit data is modulated according
to the 8-16 modulating system.
Claim 15
Dependent Claim
130 words
The recording method as set forth in claim 9, wherein the n-bit data is composed of an n1-bit
data symbol and n2-bit (= n - n1) connection bits
immediately followed thereby and selected from a
plurality of connection bits so that the cumulative
value of DC components per unit time becomes small, and wherein the recording method further
comprises the step of: when the immediately preceded data symbol is
a special data symbol, selecting a first connection bit
to be added to the immediately preceded data symbol
according to at least one connection bit that can be
added between the immediately preceded data symbol and
the first data symbol and at least one second
connection bit that can be added between the first data
symbol and the second data symbol.
Claim 16
Dependent Claim
91 words
The recording method as set forth in claim 15, wherein the selecting step comprises the
steps of: selecting at least one first connection bit
that can be added between the immediately preceded data
symbol and the first data symbol immediately followed
thereby; selecting at least one second connection bit
that can be added between the first data symbol and the
second data symbol; and selecting the first connection bit from the
selected first connection bit and the second connection
bit so that the cumulative value of the DC components
becomes small.
Claim 17
Dependent Claim
49 words
The recording method as set forth in claim 16, wherein the first connection bit selecting
step is performed by selecting the first connection bit
so that when the selected first connection bit and the
selected second connection bit are combined, the
cumulative value of the DC components becomes small.
Claim 18
Dependent Claim
52 words
The recording method as set forth in claim 15, wherein when the first data symbol is
selected according to the immediately preceded data
symbol and the first data symbol, with the special data
symbol, the second connection bit added between the
first data symbol and the second data symbol is
unconditionally selected.
Claim 19
Dependent Claim
99 words
A recording apparatus, comprising: an encoding process portion for performing an
encoding process for input data; a converting portion for converting m-bit
data that is output from the encoding processing
portion into n-bit (where n > m) data whose run length
is restricted by selecting first n-bit data according
to an immediately preceded n-bit data, first n-bit data
immediately followed thereby, and second n-bit data
immediately followed thereby so that the cumulative
value of DC components per unit time becomes small; and a recording portion for recording data that
is output from the converting portion on a recording
medium.
Claim 20
Dependent Claim
117 words
The recording apparatus as set forth in claim
19, wherein the n-bit data is composed of an n1-bit
data symbol and n2-bit (= n - n1) connection bits
immediately followed thereby and selected from a
plurality of connection bits so that the cumulative
value of DC components per unit time becomes small, and wherein the converting portion is configured
to select a first connection bit to be added to the
immediately preceded data symbol according to at least
one connection bit that can be added between the
immediately preceded data symbol and the first data
symbol and at least one second connection bit that can
be added between the first data symbol and the second
data symbol.
Claim 21
Dependent Claim
90 words
The recording apparatus as set forth in claim
20, wherein the converting portion is configured
to select at least one first connection bit that can be
added between the immediately preceded data symbol and
the first data symbol immediately followed thereby,
select at least one second connection bit that can be
added between the first data symbol and the second data
symbol, and select the first connection bit from the
selected first connection bit and the second connection
bit so that the cumulative value of the DC components
becomes small.
Claim 22
Dependent Claim
46 words
The recording apparatus as set forth in claim
21, wherein the converting portion is configured
to select the first connection bit so that when the
selected first connection bit and the selected second
connection bit are combined, the cumulative value of
the DC components becomes small.
Claim 23
Dependent Claim
21 words
The recording apparatus as set forth in claim
19, wherein the m-bit data is modulated according
to the 8-14 modulating system.
Claim 24
Dependent Claim
21 words
The recording apparatus as set forth in claim
19, wherein the m-bit data is modulated according
to the 8-16 modulating system.
Claim 25
Dependent Claim
128 words
The recording apparatus as set forth in claim
19. wherein the n-bit data is composed of an n1-bit
data symbol and n2-bit (= n - n1) connection bits
immediately followed thereby and selected from a
plurality of connection bits so that the cumulative
value of DC components per unit time becomes small, and wherein the converting portion is configured
to select a first connection bit to be added to the
immediately preceded data symbol according to at least
one connection bit that can be added between the
immediately preceded data symbol and the first data
symbol and at least one second connection bit that can
be added between the first data symbol and the second
data symbol when the immediately preceded data symbol
is a special data symbol.
Claim 26
Dependent Claim
90 words
The recording apparatus as set forth in claim
25, wherein the converting portion is configured
to select at least one first connection bit that can be
added between the immediately preceded data symbol and
the first data symbol immediately followed thereby,
select at least one second connection bit that can be
added between the first data symbol and the second data
symbol, and select the first connection bit from the
selected first connection bit and the second connection
bit so that the cumulative value of the DC components
becomes small.
Claim 27
Dependent Claim
46 words
The recording apparatus as set forth in claim
26, wherein the converting portion is configured
to select the first connection bit so that when the
selected first connection bit and the selected second
connection bit are combined, the cumulative value of
the DC components becomes small.
Claim 28
Dependent Claim
52 words
The recording apparatus as set forth in claim
25, wherein when the first data symbol is
selected according to the immediately preceded data
symbol and the first data symbol, with the special data
symbol, the second connection bit added between the
first data symbol and the second data symbol is
unconditionally selected.
Claim 29
Dependent Claim
74 words
A recording medium on which when m-bit data
is converted into n-bit (where n > m) data whose run
length is restricted, first n-bit data is selected
according to an immediately preceded n-bit data, first
n-bit data immediately followed thereby, and second n-bit
data immediately followed thereby so that the
cumulative value of DC components per unit time becomes
small and the selected first n-bit data is recorded
after the immediately preceded n-bit data.
Claim 30
Dependent Claim
118 words
The recording medium as set forth in claim 29, wherein the n-bit data is composed of an n1-bit
data symbol and n2-bit (= n - n1) connection bits
immediately followed thereby and selected from a
plurality of connection bits so that the cumulative
value of DC components per unit time becomes small, and wherein a first connection bit to be added to
the immediately preceded data symbol is selected
according to at least one connection bit that can be
added between the immediately preceded data symbol and
the first data symbol and at least one second
connection bit that can be added between the first data
symbol and the second data symbol and recorded on the
recording medium.
Claim 31
Dependent Claim
102 words
The recording medium as set forth in claim 30, wherein at least one first connection bit
that can be added between the immediately preceded data
symbol and the first data symbol immediately followed
thereby is selected, wherein at least one second connection bit
that can be added between the first data symbol and the
second data symbol is selected, wherein the first connection bit is selected
from the selected first connection bit and the second
connection bit so that the cumulative value of the DC
components becomes small, and wherein the resultantly selected first
connection bit is recorded on the recording medium.
Claim 32
Dependent Claim
55 words
The recording medium as set forth in claim 31, wherein the first connection bit is selected
so that when the selected first connection bit and the
selected second connection bit are combined, the
cumulative value of the DC components becomes small,
and wherein the resultantly selected first
connection bit is recorded on the recording medium.
Claim 33
Dependent Claim
27 words
The recording medium as set forth in claim 29, wherein the m-bit data is modulated according
to the 8-14 modulating system and recorded on the
recording medium.
Claim 34
Dependent Claim
27 words
The recording medium as set forth in claim 29, wherein the m-bit data is modulated according
to the 8-16 modulating system and recorded on the
recording medium.
Claim 35
Dependent Claim
129 words
The recording medium as set forth in claim 29, wherein the n-bit data is composed of an n1-bit
data symbol and n2-bit (= n - n1) connection bits
immediately followed thereby and selected from a
plurality of connection bits so that the cumulative
value of DC components per unit time becomes small, and wherein when the immediately preceded data
symbol is a special data symbol, a first connection bit
to be added to the immediately preceded data symbol is
selected according to at least one connection bit that
can be added between the immediately preceded data
symbol and the first data symbol and at least one
second connection bit that can be added between the
first data symbol and the second data symbol and
recorded on the recording medium.
Claim 36
Dependent Claim
103 words
The recording medium as set forth in claim 35, wherein at least one first connection bit
that can be added between the immediately preceded data
symbol and the first data symbol immediately followed
thereby is selected, wherein at least one second connection bit
that can be added between the first data symbol and the
second data symbol is selected, and wherein the first connection bit is selected
from the selected first connection bit and the second
connection bit so that the cumulative value of the DC
components becomes small, and wherein the resultantly selected first
connection bit is recorded on the recording medium.
Claim 37
Dependent Claim
55 words
The recording medium as set forth in claim 36, wherein the first connection bit is selected
so that when the selected first connection bit and the
selected second connection bit are combined, the
cumulative value of the DC components becomes small,
and wherein the resultantly selected first
connection bit is recorded on the record medium.
Claim 38
Dependent Claim
52 words
The recording medium as set forth in claim 35, wherein when the first data symbol is
selected according to the immediately preceded data
symbol and the first data symbol, with the special data
symbol, the second connection bit added between the
first data symbol and the second data symbol is
unconditionally selected.
Claim 39
Dependent Claim
62 words
A data converting method, comprising the step
of: when m-bit data is converted into n-bit
(where n > m) data whose run length is restricted,
selecting first n-bit data according to an immediately
preceded n-bit data, first n-bit data immediately
followed thereby, and second n-bit data immediately
followed thereby so that the cumulative value of DC
components per unit time becomes small.
Claim 40
Dependent Claim
121 words
The data converting method as set forth in
claim 39, wherein the n-bit data is composed of an n1-bit
data symbol and n2-bit (= n - n1) connection bits
immediately followed thereby and selected from a
plurality of connection bits so that the cumulative
value of DC components per unit time becomes small, and wherein the data converting method further
comprises the step of: selecting a first connection bit to be added
to the immediately preceded data symbol according to at
least one connection bit that can be added between the
immediately preceded data symbol and the first data
symbol and at least one second connection bit that can
be added between the first data symbol and the second
data symbol.
Claim 41
Dependent Claim
92 words
The data converting method as set forth in
claim 40, wherein the selecting step comprises the
steps of: selecting at least one first connection bit
that can be added between the immediately preceded data
symbol and the first data symbol immediately followed
thereby; selecting at least one second connection bit
that can be added between the first data symbol and the
second data symbol; and selecting the first connection bit from the
selected first connection bit and the second connection
bit so that the cumulative value of the DC components
becomes small.
Claim 42
Dependent Claim
50 words
The data converting method as set forth in
claim 41, wherein the first connection bit selecting
step is performed by selecting the first connection bit
so that when the selected first connection bit and the
selected second connection bit are combined, the
cumulative value of the DC components becomes small.
Claim 43
Dependent Claim
22 words
The data converting method as set forth in
claim 39, wherein the m-bit data is modulated according
to the 8-14 modulating system.
Claim 44
Dependent Claim
22 words
The data converting method as set forth in
claim 39, wherein the m-bit data is modulated according
to the 8-16 modulating system.
Claim 45
Dependent Claim
132 words
The data converting method as set forth in
claim 39, wherein the n-bit data is composed of an n1-bit
data symbol and n2-bit (= n - n1) connection bits
immediately followed thereby and selected from a
plurality of connection bits so that the cumulative
value of DC components per unit time becomes small, and wherein the data converting method further
comprises the step of: when the immediately preceded data symbol is
a special data symbol, selecting a first connection bit
to be added to the immediately preceded data symbol
according to at least one connection bit that can be
added between the immediately preceded data symbol and
the first data symbol and at least one second
connection bit that can be added between the first data
symbol and the second data symbol.
Claim 46
Dependent Claim
92 words
The data converting method as set forth in
claim 45, wherein the selecting step comprises the
steps of: selecting at least one first connection bit
that can be added between the immediately preceded data
symbol and the first data symbol immediately followed
thereby; selecting at least one second connection bit
that can be added between the first data symbol and the
second data symbol; and selecting the first connection bit from the
selected first connection bit and the second connection
bit so that the cumulative value of the DC components
becomes small.
Claim 47
Dependent Claim
50 words
The data converting method as set forth in
claim 46, wherein the first connection bit selecting
step is performed by selecting the first connection bit
so that when the selected first connection bit and the
selected second connection bit are combined, the
cumulative value of the DC components becomes small.
Claim 48
Dependent Claim
53 words
The data converting method as set forth in
claim 35, wherein when the first data symbol is
selected according to the immediately preceded data
symbol and the first data symbol, with the special data
symbol, the second connection bit added between the
first data symbol and the second data symbol is
unconditionally selected.
References Cited (Backward Citations)
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