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Extracting auxiliary data from a host signal

A technology for auxiliary data and signals, applied in watermark embedders, watermark detectors, embedding auxiliary data, signals and computer readable codes, can solve problems such as missing watermarks, not allowing users, etc., to minimize demand and reduce power consumption The effect of minimizing idleness and power consumption

Inactive Publication Date: 2009-10-14
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If any part of the signal is not processed, any watermark embedded in that part will be missed and therefore the user will not be allowed to perform actions associated with the embedded watermark

Method used

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  • Extracting auxiliary data from a host signal
  • Extracting auxiliary data from a host signal
  • Extracting auxiliary data from a host signal

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Embodiment Construction

[0034] Digital watermarking can be used to signal and trigger events from remote applications or devices. For example, a watermark embedded in the soundtrack of a TV cartoon episode could trigger specific actions on the toy in sync with the cartoon characters' actions. This application scenario has two distinct properties: i) the events (trigger points) are sporadic, e.g. Weeks or even months should also be maintained for a few days. Power constraints make continuous operation infeasible for watermark detectors. Furthermore, the detection scheme should ensure that no trigger points are missed, or that information extraction is not complicated enough to compromise power efficiency.

[0035] attached figure 1 An embodiment of a toy in the form of a teddy bear 1 that can be remotely controlled by one or more media devices 10; 11; 12 is illustrated. In various embodiments, the teddy bear 1 may include a microphone, possibly inserted into the ear 2 or located within the toy clo...

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PUM

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Abstract

The invention relates to extracting and embedding auxiliary data from and to a host signal. In an embodiment, the auxiliary data relates to remotely control of an application or a device, such as an interactive toy. Auxiliary data are extracted from a host signal, by periodically (32A-32C) with a predetermined first period searching a first section (33A-33C) of the host signal for a first watermark (34); and, upon detection of the first watermark, searching the host signal for a second watermark (35). In embodiments, information relating to timing and type of action to be performed by a remotely controlled device may be conveyed by the watermarks.

Description

technical field [0001] The invention relates to extracting auxiliary data from a host signal and embedding auxiliary data into the host signal. Furthermore, the present invention relates to a watermark detector, a watermark embedder, a signal and computer readable code. Background technique [0002] Digital watermarking is often used for the purpose of protecting intellectual property. However, alternative applications of watermarked signals include communicating command and control signals or equivalents via watermarking. In one class of applications, digital watermarking is used for remote device activation or event triggering. In one example, an interactive toy is adapted to respond to a watermark embedded in a television broadcast. For example, a watermark embedded in the soundtrack or image data of a television cartoon episode could enable the toy to move in sync with the actions of the cartoon characters seen on the screen. [0003] In US Pat. No. 6,737,957, a syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00G10L19/00A63H30/04H04N1/32H04N7/26G11B20/00G10L19/018H04N21/435H04N21/8358
CPCA63H30/04G10L19/018A63H2200/00A63H3/36
Inventor M·U·塞利克A·N·莱马J·A·海茨马
Owner KONINK PHILIPS ELECTRONICS NV