EP1039468A2
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EP
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Method for implementing trickplay modes in a data stream recorder
Assignee: Deutsche Thomson Brandt GmbH
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Filing: 1999-07-13
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Granted: —
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Expires: 2019-07-13
Abstract
Abstract Stream recording assumes e.g. a settop box to be connected to a DVD Streamer. The connection is e.g. of IEEE1394 type using interfaces including transmitting and receiving firmware. Stream Data include one or more Stream Objects which each can be stored as a Program Stream as described in ISO/IEC 13818-1, Systems. Each Stream Object contains its own Access Unit data. A trickplay mode, e.g. fast forward, is performed by selecting the desired Access Units which are derived from a mapping list with incremental application packet arrival times.
Inventors
- 👤 Marco Winter
- 👤 Harald Schiller
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 00:30
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/005; G11B20/00; G11B20/10; G11B20/12; G11B27/02; G11B27/031; G11B27/034; G11B27/10; G11B27/102; G11B27/105; G11B27/11; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/32; G11B27/327; G11B27/329; H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; H04N5/783; G11B2020/10935; G11B2020/10944; G11B2020/1264; G11B2020/1265; G11B2020/1285; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/215; G11B2220/216; G11B2220/25; G11B2220/2537; G11B2220/2562; G11B2220/60; G11B2220/65; H04N5/765; H04N5/775; H04N5/84; H04N5/85; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
Method for implementing trickplay modes in a bitstream
recorder (STRD), and corresponding recorder (STRD),
wherein the bitstream is organised in stream objects
(SOB) and access to the bitstream is performed using access
units (AU) and access unit information is attached
to the stream objects of the bitstream and to navigation
data recorded, or to be recorded, and wherein said access
unit information includes an access unit start map
(AUSM), and optionally an access unit end map (AUEM),
which are used in the trickplay modes together with the
navigation data for access to the bitstream.
Claim 2
Dependent Claim
86 words
Bitstream recorder (STRD) implementing trickplay modes,
wherein the bitstream is organised in stream objects
(SOB) and access to the bitstream is performed using access
units (AU) and access unit information is attached
to the stream objects of the bitstream and to navigation
data recorded, or to be recorded, and wherein said access
unit information includes an access unit start map
(AUSM), and optionally an access unit end map (AUEM),
which are used in the trickplay modes together with the
navigation data for access to the bitstream.
Claim 3
Dependent Claim
26 words
Method or recorder according to claim 1 or 2, wherein
said trickplay modes include fast forward, fast reverse,
slow motion, single picture step and/or still picture.
Claim 4
Dependent Claim
35 words
Method or recorder according to any of claims 1 to 3,
wherein said bitstream contains access unit start and access
unit end marks which indicate the start or the end
of an access unit, respectively.
Claim 5
Dependent Claim
47 words
Method or recorder according to any of claims 1 to 4,
wherein said access unit information includes an access
unit start map (AUSM) and optional one or more of access
unit end map (AUEM), access unit start location list
(AUSLL) and access unit end location list (AUELL).
Claim 6
Dependent Claim
33 words
Method or recorder according to claim 5 wherein, if the
access unit end map (AUEM) exists, for each access unit
start map (AUSM) entry an access unit end map (AUEM) entry
is provided.
Claim 7
Dependent Claim
60 words
Method or recorder according to claim 5 or 6, wherein the
index of each access unit end map entry is equal to or
greater than the entry index of its corresponding access
unit start map entry and is less than the index of the
immediately following access unit start map entry if any
following access unit start map entry exists.
References Cited (Backward Citations)
No citation records indexed.
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