APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN A MOBILE COMMUNICATION TERMINAL

• US 20070123203A1
• Filed: 10/19/2006
• Published: 05/31/2007
• Est. Priority Date: 10/20/2005
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Jae-Eung
• Granted Patent: US 7,742,915 B2
• Time in Patent Office: Days
• US Class Current: 455/403
• CPC Class Codes: H04M 11/064 Data transmission during pauses in telephone conversation

Abstract

An apparatus for transmitting data from a mobile communication terminal includes an audio codec which converts a voice signal into digital voice data, a detection unit which detects a pause in the digital voice data, and a modulator/demodulator which modulates a signal with non-voice data, converts the modulated signal into an analog non-voice signal, and outputs the analog non-voice signal to the audio codec during the pause in the digital voice data.

Claims

1. An apparatus for transmitting data from a mobile communication terminal, comprising:

an audio codec which converts a voice signal into digital voice data;

a detection unit which detects a pause in the digital voice data; and

a modulator/demodulator which modulates a signal with non-voice data, converts the modulated signal into an analog non-voice signal, and outputs the analog non-voice signal to the audio codec during the pause in the digital voice data.

2. The apparatus according to claim 1, wherein the audio codec includes a switch which selectively switches the voice signal and the analog non-voice signal to the codec based on the detection of the pause in the digital voice data.

3. The apparatus according to claim 1, wherein the audio codec converts the analog non-voice signal into digital non-voice data during the pause in the digital voice data.

4. The apparatus according to claim 1, further comprising:

a buffer which temporarily stores the non-voice data.

5. The apparatus according to claim 1, wherein the audio codec comprises:

an amplifier which amplifies the voice signal;

a switch which switches between the amplified voice signal and the analog non-voice signal;

an A/D converter which converts the amplified voice signal to digital voice data and converts the analog non-voice signal to digital non-voice data;

a filter which filters the converted digital voice data and the converted digital non-voice data; and

a Pulse Code Modulation (PCM) compander which compresses the filtered voice data and filtered non-voice data using PCM coding.

6. The apparatus according to claim 1, wherein the modulator/demodulator comprises:

a modulator which modulates the signal with the non-voice data during the pause in the digital voice data;

a D/A converter which converts the modulated signal into the analog non-voice signal;

a filter which filters the analog non-voice signal; and

a Low Pass Filter which limits a frequency band of the filtered analog non-voice signal.

7. An apparatus for receiving data in a mobile communication terminal, comprising:

a detector which detects the presence of non-voice data in a received data stream;

an audio codec which converts the non-voice data into an analog non-voice signal; and

a modulator/demodulator which converts the analog non-voice signal into digital non-voice data when the presence of the non-voice data is detected in the received data stream, and demodulates the converted digital non-voice data.

8. The apparatus according to claim 7, wherein the audio codec comprises:

a switch which selectively switches an output to the modulator/demodulator based on the detected presence of the non-voice data in the received data stream.

9. The apparatus according to claim 8, wherein the modulator/demodulator converts the analog non-voice signal into the digital non-voice data when the switch switches the output to the modulator/demodulator, and outputs the demodulated non-voice data to a display unit.

10. The apparatus according to claim 7, wherein the audio codec outputs a voice signal to a speaker.

11. The apparatus according to claim 7, further comprising:

a buffer which temporarily stores the received data stream.

12. The apparatus according to claim 7, wherein the audio codec comprises:

a PCM expander which expands the received data using PCM decoding;

a Low Pass Filter which limits a frequency band of the decoded received data;

a D/A converter which converts the frequency band-limited data into an analog signal; and

a switch which switches a path of the converted analog signal.

13. The apparatus according to claim 7, wherein the modulator/demodulator comprises:

a Low Pass Filter which limits a frequency band of the analog non-voice signal;

an A/D which converts the frequency band-limited non-voice signal into digital non-voice data; and

a demodulator which demodulates the digital non-voice data.

14. A method for transmitting data from a mobile communication terminal, comprising:

converting, by an audio codec, a voice signal into digital voice data;

detecting a pause in the digital voice data; and

modulating a signal with non-voice data, converting the modulated signal into an analog non-voice signal, and outputting the analog non-voice signal to the audio codec during the pause in the digital voice data.

15. The method according to claim 14, further comprising:

converting, by the audio codec, the analog non-voice signal into digital non-voice data; and

selectively outputting the digital voice data and the digital non-voice data to a Central Processor Unit based on whether the pause in the digital voice data is detected.

16. A method for receiving data in a mobile communication terminal, comprising:

detecting the presence of non-voice data in a received data stream;

converting the non-voice data into an analog non-voice signal;

converting the analog non-voice signal into digital non-voice data when the presence of the non-voice data is detected in the received stream; and

demodulating the converted digital non-voice data.

17. The method according to claim 16, wherein the non-voice data comprises one of image data and text data.

18. The method according to claim 16, further comprising:

outputting the demodulated digital non-voice data to a display unit.

19. The method according to claim 16, further comprising:

converting voice data from the received data stream into an analog voice signal, and outputting the analog voice signal to a speaker.

20. A mobile communication terminal, comprising:

a transceiver which transmits and receives voice data;

an audio codec which processes voice data; and

a processor that cooperates with the audio codec to insert non-voice data between certain portions of voice data transmitted by the transceiver and to detect non-voice data inserted between certain portions of the received voice data, such that the non-voice data is transmitted and received together with the voice data through a single voice communication channel.

21. The terminal according to claim 20, wherein the processor further comprises:

a modulator/demodulator which modulates a signal with the non-voice data to allow insertion of the non-voice data between voice data, and demodulates non-voice data inserted between voice data.

22. The terminal according to claim 20, wherein the processor further comprises:

an input unit which receives user input; and

a detector which detects pauses in the voice data to be transmitted.

23. The terminal according to claim 22, wherein the detector compares sound characteristics of a user'"'"'s voice with sound characteristics of other sounds picked up by the input unit.

24. The terminal according to claim 23, wherein the sound characteristics of the user'"'"'s voice relate to at least one of amplitude, frequency, pitch, tone, intonation and speed of speech.

25. The terminal according to claim 22, wherein the processor further comprises.

a buffer which temporarily stores the received user input to allow the detector to detect the pauses in the voice data.

26. The terminal according to claim 22, wherein the processor further comprises:

a text processor which receives text data from a user via the input unit, and cooperates with the modulator/demodulator and the detector to insert at least a portion of the received text data during the pauses in the voice data.

27. The terminal according to claim 26, further comprising a storage unit which stores the received text data for subsequent retrieval.

28. The terminal according to claim 20, wherein the non-voice data comprises text.

29. The terminal according to claim 20, further comprising:

a screen which displays the non-voice data to allow viewing by a user while a voice call is in progress.