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Correction device for audiovisual data

A correction device and audio-visual technology, which is applied to broadcasting devices, components of television systems, televisions, etc., can solve the problem that portable audio-visual reproduction equipment does not have a proper correction device and a data frame processing device.

Inactive Publication Date: 2009-12-23
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Disadvantageously, if the portable audiovisual reproduction device has data frame processing means without suitable correction means, audiovisual data with errors contained in said data frame processing means are reproduced

Method used

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  • Correction device for audiovisual data
  • Correction device for audiovisual data
  • Correction device for audiovisual data

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Experimental program
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Embodiment Construction

[0030] The invention is explained below with respect to a digital radio receiving device, which is provided for receiving and processing audio data which are transmitted in data frames of the type MPEG audio layer II via the DAB radio broadcast transmission method . exist figure 1 Such a data frame is shown schematically in . The data frame consists of the following data segments (Datenabschnitte): Data frame header segment 1, data segment 2 with check data for the data frame header segment, data segment 3 with allocation data, data for selecting the scaling factor (Skalenfaktor) Segment 4, data segment 5 with scaling factor, data segment 6 with scaled sample data divided into three groups for each frequency range, data segment 7 with padding bits, data segment with extended A data segment 8 of the program accompanying data, a data segment 9 of the check data with the scaling factor and a data segment 10 of the determined program accompanying data. Data frame header section...

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Abstract

The present invention relates to a correction device for audiovisual data which are contained in data sections of data frames. In order to provide a correction device for audiovisual data which can generate a sequence of error-free data frames, the correction device is set up to receive the data frame, to carry out a check in order to determine whether the data section (5) containing audiovisual data is defective, and to output an alternative frame if the data section (5) containing audiovisual data is defective.

Description

technical field [0001] The invention relates to a correction device for audiovisual data according to the preamble of claim 1 , a corresponding audiovisual reproduction device according to the preamble of claim 6 and a device according to claim 7 Corresponding correction methods described in the preamble for audiovisual data, in particular for data frames used in the DAB radio transmission method (Digital Audio Broadcasting). Background technique [0002] Such a correction device for audiovisual data contained in a data segment of audiovisual data with data frames is known from DE 199 59 037 . In this respect, audiovisual data are audio data, video data or data consisting of both audio and video data and entering representation directly through sound or image. [0003] The correction device belongs to the data frame processing device of the audiovisual reproduction device. The reproduction device receives a sequence of data frames having data segments with audiovisual data...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04H60/12
CPCH04H2201/20H04H60/12H04N5/21H04N7/08
Inventor V·萨德-巴恩索F·霍夫曼
Owner ROBERT BOSCH GMBH