Video data transmission

The present invention relates to video data transmission and is applicable in particular, though not necessarily, to video telephony. A video data transmission system in which a transmission terminal () having a color camera () is required to transmit video information to a reception terminal () hav...

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Main Author Lehtonen, Erkko
Format Patent
LanguageEnglish
Published 05.08.2003
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Abstract The present invention relates to video data transmission and is applicable in particular, though not necessarily, to video telephony. A video data transmission system in which a transmission terminal () having a color camera () is required to transmit video information to a reception terminal () having only a black and white display (). In order to minimise the transmission bit-rate, during a set-up process the reception terminal () sends a "LuminanceOnly" flag to the transmission terminal () advising the transmission terminal to send only the luminance component of the video signal generated by the color camera (). The chrominance components generated by the camera () are either discarded or encoded as null data prior to transmission.
AbstractList The present invention relates to video data transmission and is applicable in particular, though not necessarily, to video telephony. A video data transmission system in which a transmission terminal () having a color camera () is required to transmit video information to a reception terminal () having only a black and white display (). In order to minimise the transmission bit-rate, during a set-up process the reception terminal () sends a "LuminanceOnly" flag to the transmission terminal () advising the transmission terminal to send only the luminance component of the video signal generated by the color camera (). The chrominance components generated by the camera () are either discarded or encoded as null data prior to transmission.
Author Lehtonen, Erkko
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CorporateAuthor Nokia Mobile Phones Ltd
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Snippet The present invention relates to video data transmission and is applicable in particular, though not necessarily, to video telephony. A video data transmission...
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Title Video data transmission
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