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EP0624040A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

System for composing multimedia signals for interactive television services

Assignee: AT&T Inc
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Filing: 1994-04-20
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Granted: —
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Expires: 2014-04-20
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Abstract

Abstract A system for composing multimedia signals from various source signals, such as still-frame video signals, full motion video signals and audio signals includes a plurality of composing units (314), each of which is capable of composing (in 440) a multimedia signal from selected source signals. One of such composing units (314) is assigned for each multimedia signal to be composed. Each composing unit (314) accepts parameters specifying various properties for each element of the multimedia signal, such as size, position and precedence for each video element and gain for each audio element. The composing units can include decompressors (418,420,422) for decompressing source signals furnished in compressed form and a compressor (444,446) to compress the multimedia signal to be transmitted to a user. The source signals can be received from a packet network and the resulting multimedia signals transmitted to the respective users via the same packet network.

Inventors

  • 👤 Donald Edgar Blahut
  • 👤 Walter Hollenberg
  • 👤 Edward Stanley Szurkowski

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 11:27
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04N; H04N7/00; H04N7/16; H04N7/173; H04N21/00; H04N21/20; H04N21/23; H04N21/236; H04N21/2365; H04N21/40; H04N21/43; H04N21/434; H04N21/4347; H04N5/00; H04N5/222; H04N5/262; H04N5/265; H04N7/17309; H04N7/17318; H04N7/17336; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5603; H04L2012/5609; H04L2012/561; H04L2012/5638; H04L2012/564; H04L2012/5642; H04N21/41; H04N21/426

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 96 words
A system for composing multimedia signals from source signals, which comprises: a plurality of composing unit means, each said composing unit means being capable of composing a multimedia signal from selected ones of said source signals; means for assigning one of said composing unit means in response to a request for a multimedia signal; means for configuring said assigned composing unit means to compose said requested multimedia signal; means for applying said selected source signals to said assigned composing unit means in response to said request; and means for transmitting said multimedia signal to utilizing means.
Claim 2
Dependent Claim 79 words
The system of claim 1 wherein said source signals include video signals and each said composing unit means comprises: at least one means for modifying a video signal in accordance with at least one video parameter; said means for configuring comprises means for applying said video parameters to each said video modifying means; and said composing unit means further comprises means for combining the outputs of said video modifying means into a composite video signal representing an overall image.
Claim 3
Dependent Claim 30 words
The system of claim 2 in which at least one of said video parameters affects the size in said overall image of the image resulting from said source video signal.
Claim 4
Dependent Claim 30 words
The system of claim 2 in which at least one of said video parameters affects the position in said overall image of the image resulting from said source video signal.
Claim 5
Dependent Claim 19 words
The system of claim 2 wherein at least one of said video signals is a still frame video signal.
Claim 6
Dependent Claim 18 words
The system of claim 2 wherein at least one of said video signals is a full-motion video signal.
Claim 7
Dependent Claim 75 words
The system of claim 1 wherein said source signals include audio signals and each said composing unit means comprises: at least one means for modifying an audio signal in accordance with at least one audio parameter; said means for configuring comprises means for applying said audio parameter to each said audio modifying means; and said composing unit means further comprises means for combining the outputs of said audio modifying means into a composite audio signal.
Claim 8
Dependent Claim 22 words
The system of claim 7 in which at least one of said audio parameters affects the gain of said source audio signal.
Claim 9
Dependent Claim 34 words
The system of claim 1 in which said at least one of said source signals is compressed and each composing unit means further comprises: at least one means for decompressing an applied source signal.
Claim 10
Dependent Claim 29 words
The system of claim 1 in which said multimedia signal is compressed and each composing unit further comprises: means for compressing the multimedia signal composed by said composing unit.

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