Evaluation of received useful information by the detection of error concealment

1 - 13 . (canceled)

14 . A method for evaluating data containing useful information received via a communication network, the method comprising:

evaluating and at least partially correcting, via a channel decoder, the data received;

forwarding, via the channel decoder, to a speech decoder the data with characteristics of supplementary information representing the data;

decoding the data via the speech decoder and, where necessary, performing error concealment;

forwarding the data to a text telephony receiver via the speech decoder;

evaluating the data received and analyzing the data statistically, via a demodulator in the text telephony receiver, by measuring a signal energy;

generating, via the demodulator, reliability information relating to the data received;

forwarding the data, via the demodulator, with the reliability information to an error correction modulator; and

correcting the data received, via the error correction modulator, taking into account the reliability information.

15 . A method for evaluating data containing useful information as claimed in claim 14 , further comprising determining a likelihood of the reliability information representing appropriate decoding of the data received as a function of a result of the error concealment.

16 . A method for evaluating data containing useful information as claimed in claim 15 , further comprising providing a channel decoder which takes account of the reliability information for channel decoding.

17 . A method for evaluating data containing useful information as claimed in claim 14 , wherein the data is emergency call-related data.

18 . A method for evaluating data containing useful information as claimed in claim 14 , wherein the data is analyzed in a mobile station.

19 . A method for evaluating data containing useful information as claimed in claim 14 , wherein the data is transmitted over a cellular mobile communication network.

20 . A method for evaluating data containing useful information as claimed in claim 14 , wherein for statistical detection of an error concealment by the speech decoder, time segments of frames of the received useful information are analyzed.

21 . A method for evaluating data containing useful information as claimed in claim 20 , wherein the time segments are analyzed in a text telephony demodulator.

22 . A method for evaluating data containing useful information as claimed in claim 14 , wherein the error correction modulator is located in the text telephony receiver.

23 . A method for evaluating data containing useful information as claimed in claim 14 , wherein the data is encoded with Adaptive Multi Rate.

24 . A method for evaluating data containing useful information as claimed in claim 14 , wherein the useful information includes at least one of text, speech, picture and video signals.

25 . A device for evaluating data containing useful information received via a communication network, comprising:

a channel decoder in a communication terminal receiver for evaluating and at least partially correcting the received data, and for forwarding the data with characteristics of supplementary information representing the data to a speech decoder;

a speech decoder for decoding and, if necessary, performing error concealment, and for forwarding the data to a text telephony receiver;

a demodulator in the text telephony receiver for evaluating and statistically analyzing the received data by measuring a signal energy, for creating reliability information relating to the data and for forwarding the data with the reliability information to an error correction modulator; and

an error correction modulator for correcting the received data, taking into account the reliability information.