EP0903738A2
Expired / Lapsed
EP
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Optical disc recording apparatus and computer readable recording medium
Assignee: Panasonic Holdings Corp
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Filing: 1998-09-17
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Granted: —
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Expires: 2018-09-17
Abstract
Abstract An optical disc including: a data area storing one or more video objects; and a time map area storing time map information. Each video object includes a plurality of video object units. The time map information includes a pair of a first time table and a second time table for each video object. Each first time table includes: addresses of video object units in a corresponding video object; and indicators. The addresses are arranged in order and indicate storage positions of the video object units that correspond to reproduction points that differ by a predetermined time unit. The predetermined time unit is longer than a maximum reproduction period of a video object unit. The indicators specify the video object units which respectively correspond to the addresses. Each second time table includes an entry for each video object unit in the corresponding video object. The entries are arranged in order. Each second time table includes a reproduction period and a data size of each video object unit.
Inventors
- 👤 Shinichi Saeki
- 👤 Kaoru Murase
- 👤 Tomoyuki Okada
- 👤 Kazuhiro Tsuga
- 👤 Tokuo Nakatani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 10:27
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042; G; G11; G11B; G11B19/00; G11B19/02; G11B19/022; G11B27/00; G11B27/005; G11B27/02; G11B27/031; G11B27/034; G11B27/036; G11B27/10; G11B27/102; G11B27/105; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/32; G11B27/327; G11B27/329; H10; H10B; H10B12/00; H10B12/01; H10B12/02; H10B12/03; H10B12/038; H10B12/0387; G11B20/00; G11B20/00007; G11B2020/00079; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/215; G11B2220/216; G11B2220/25; G11B2220/2537; G11B2220/2562; G11B2220/2575; G11B27/34; H04N5/00; H04N5/76; H04N5/765; H04N5/775; H04N5/84; H04N5/85; H04N9/806; H04N9/8063
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
An optical disc including a data area and a time map area, the
data area storing one or more video objects and the time map area
storing time map information, wherein each video object includes a plurality of video object
units, the time map information includes a pair of a first time
table and a second time table for each video object, each first time table includes: addresses of video object units in a corresponding video
object, the addresses being arranged in order and indicating
storage positions of the video object units that correspond to
reproduction points that differ by a predetermined time unit, the
predetermined time unit being longer than a maximum reproduction
period of a video object unit; and indicators for specifying the video object units which
respectively correspond to the addresses, and each second time table includes an entry for each video
object unit in the corresponding video object, the entries being
arranged in order and each including a reproduction period of a
video object unit and a data size of the video object unit.
Claim 2
Dependent Claim
146 words
The optical disc of Claim 1, wherein each first time table includes a plurality of first time
maps which each correspond to a different one of the reproduction
points, each second time table includes a plurality of second
time maps which each correspond to a different one of the
plurality of video object units, each first time map includes: one of the indicators, the indicator indicating a second
time map for a video object unit that corresponds to the
reproduction point, an address of the video object unit that corresponds to
the reproduction point, and difference information indicating a difference between
the corresponding reproduction point and a reproduction start time
of the corresponding video object unit, and each second time map includes time information
indicating a reproduction period of a corresponding video object
unit, and also includes a data size of the corresponding video
object unit.
Claim 3
Dependent Claim
53 words
The optical disc of Claim 2, wherein the time map information includes a time offset for each
video object, each time offset indicating a difference between a
first reproduction point during a reproduction of the
corresponding video object and a start time of a first video
object unit in the corresponding video object.
Claim 4
Dependent Claim
216 words
A recording apparatus comprising: an input means for receiving video data in a time
series; a compression means for compressing the received video
data to generate a video object which includes a sequence of video
object units; a write means for writing data onto an optical disc;
and a control means for controlling the write means,
wherein the control means controls the write means to write the
generated video object onto the optical disc, generates a first
time table and a second time table, and controls the write means
to write the generated first time table and second time table, each first time table including: addresses of video object units in a corresponding video
object, the addresses being arranged in order and indicating
storage positions of the video object units that correspond to
reproduction points that differ by a predetermined time unit, the
predetermined time unit being longer than a maximum reproduction
period of a video object unit; and indicators for specifying the video object units which
respectively correspond to the addresses, and each second time table including an entry for each video
object unit in the corresponding video object, the entries being
arranged in order and each including a reproduction period of a
video object unit and a data size of the video object unit.
Claim 5
Dependent Claim
146 words
The recording apparatus of Claim 4, wherein each first time table includes a plurality of first time
maps which each correspond to a different one of the reproduction
points, each second time table includes a plurality of second
time maps which each correspond to a different one of the
plurality of video object units, each first time map includes: one of the indicators, the indicator indicating a second
time map for a video object unit that corresponds to the
reproduction point, an address of the video object unit that corresponds to
the reproduction point, and difference information indicating a difference between
the corresponding reproduction point and a reproduction start time
of the corresponding video object unit, and each second time map includes time information
indicating a reproduction period of a corresponding video object
unit, and also includes a data size of the corresponding video
object unit.
Claim 6
Dependent Claim
53 words
The recording apparatus of Claim 5, wherein the time map information includes a time offset for each
video object, each time offset indicating a difference between a
first reproduction point during a reproduction of the
corresponding video object and a start time of a first video
object unit in the corresponding video object.
Claim 7
Dependent Claim
192 words
A computer-readable recording medium storing a program to be
read by a computer which receives video data in a time series,
compresses the received video data to generate a video object
which includes a sequence of video object units, and writes the
generated video object onto an optical disc, the program
instructing the computer to generate a first time table and a
second time table and to write the generated tables into the
optical disc, wherein the first time table includes: addresses of video object units in a corresponding video
object, the addresses being arranged in order and indicating
storage positions of the video object units that correspond to
reproduction points that differ by a predetermined time unit, the
predetermined time unit being longer than a maximum reproduction
period of a video object unit; and indicators for specifying the video object units which
respectively correspond to the addresses, and the second time table includes an entry for each video
object unit in the corresponding video object, the entries being
arranged in order and each including a reproduction period of a
video object unit and a data size of the video object unit.
References Cited (Backward Citations)
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