VERFAHREN ZUR SPRACHVERSCHLUESSELUNG MIT GLEICHZEITIGER DATENUEBERTRAGUNG IN SCHMALBANDIGEN UEBERTRAGUNGSSYSTEMEN

Using the novel method, it should be possible to achieve the highest possible data rate for the data to be transmitted in addition to speech. For this purpose, the voice frequency band is split into at least two part-frequency bands at the transmitter end. The part-frequency bands are scrambled with...

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Bibliographic Details
Main Authors VERSUCHSANST. MAX GRUNDIG HOLLAEND- ST, BAUERSCHMIDT, WERNER GRUNDIG E.M.V. EL
Format Patent
LanguageGerman
Published 15.09.1993
Edition5
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
JAMMING OF COMMUNICATION
SECRET COMMUNICATION
TELEPHONIC COMMUNICATION
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Summary:Using the novel method, it should be possible to achieve the highest possible data rate for the data to be transmitted in addition to speech. For this purpose, the voice frequency band is split into at least two part-frequency bands at the transmitter end. The part-frequency bands are scrambled with one another and optionally inverted or not inverted. For the simultaneous transmission of additional data, the speech information of at least one part-frequency band is also removed at the transmitter end and replaced by the data to be transmitted. At the receiver end, the part-frequency bands are inverted again or not inverted and descrambled in corresponding inversion with respect to the transmitter end. Finally, the part-frequency bands used for the respective transmission of speech or of additional data are selectively separated and separately evaluated. Simultaneous speech and data transmission.
Bibliography:Application Number: AT19880109409T