METHOD FOR TRANSMITTING DATA OVER VOICE CHANNEL

• US 20100266001A1
• Filed: 11/24/2009
• Published: 10/21/2010
• Est. Priority Date: 04/21/2009
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Choi, Yu Tae, Kim, Young Seok
• Granted Patent: US 8,379,700 B2
• Time in Patent Office: Days
• US Class Current: 375/222
• CPC Class Codes: G10L 19/00 Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis in musical instruments G10H
• CPC Class Codes: H04M 11/066 Telephone sets adapted for data transmision

Abstract

The present invention features a digital data communications system for transmitting a voice or digital data between a terminal mounted in a vehicle and an external server, including a MDOV modem configured to modulate the digital data to include frequency characteristics of vowel and consonant of the voice; and a transceive module configured to transceive the modulated signal through a voice channel.

Claims

1. A digital data communications system for transmitting a voice or a digital data between a terminal mounted in a vehicle and an external server, comprising:

a MDOV modem configured to modulate the digital data to include frequency characteristics of vowel and consonant of the voice; and

a transceive module configured to transceive the modulated signal through a voice channel.

2. The digital data communications system of claim 1, wherein the terminal comprises:

a telematics terminal which includes the MDOV modem; and

a cell phone which includes the transceive module,

wherein the telematics terminal and the cell phone are coupled by a Bluetooth communication.

3. The digital data communications system of claim 1, wherein the frequency characteristic of vowel is a result of modulating the digital data by using one of M-ary FSK, M-ary PSK, M-ary BPSK, and M-ary DPSK of low frequency band;

and the frequency characteristic of consonant is formed through the insertion of dummy signal of medium frequency band.

4. The digital data communications system of claim 3, wherein the dummy signal of medium frequency band is a filtered Gaussian noise signal which includes or greater than a frequency range of a plurality of low-frequency signals in the low frequency band and spread in a range lower than a maximum 4 KHz in a frequency domain.

5. The digital data communications system of claim 1, wherein the transmission of the voice signal or the digital data is determined by a mode tone.

6. A method for transceiving a voice or a digital data between a terminal mounted in a vehicle and an external server, the method comprising:

modulating the digital data to include frequency characteristics of vowel and consonant of the voice; and

transceiving the modulated signal through a voice channel.

7. The method of claim 6 wherein the modulating the digital data comprises:

converting the digital data to generate a signal including the frequency characteristics of vowel and consonant of the voice;

sending the signal from a telematics terminal to a cell phone through a Bluetooth communication; and

modulating the transmitted signal to transceive through the voice channel.

8. The method of claim 7, wherein the frequency characteristic of vowel is a result of modulating the digital data by using M-ary FSK, M-ary PSK or M-ary BPSK of low frequency band;

and the frequency characteristic of consonant is formed through the insertion of dummy signal of medium frequency band.

9. The method of claim 8, wherein the dummy signal of medium frequency band is a filtered Gaussian noise signal which includes or greater than a frequency range of a plurality of low-frequency signals in the low frequency band and spread in a range lower than a maximum 4 KHz in a frequency domain.

10. The method of claim 6, further comprising generating a mode tone for determining the transmission of the voice signal or the digital data.

11. A digital data communications system for transmitting a voice or a digital data between a terminal mounted in a vehicle and an external server, comprising:

a MDOV modem; and

a transceive module.

12. The digital data communications system of claim 11, wherein the MDOV modem is configured to modulate the digital data to include frequency characteristics of vowel and consonant of the voice.

13. The digital data communications system of claim 11, wherein the transceive module is configured to transceive the modulated signal through a voice channel.

14. The digital data communications system of claim 11, wherein the terminal further comprises:

a telematics terminal which includes the MDOV modem; and

a cell phone which includes the transceive module.

15. The digital data communications system of claim 14, wherein the telematics terminal and the cell phone are coupled by a Bluetooth communication.

16. The digital data communications system of claim 11, wherein the frequency characteristic of vowel is a result of modulating the digital data by using one of M-ary FSK, M-ary PSK, M-ary BPSK, or M-ary DPSK of low frequency band.

17. The digital data communications system of claim 16, wherein the frequency characteristic of consonant is formed through the insertion of dummy signal of medium frequency band.

18. A method for transceiving a voice or a digital data between a terminal mounted in a vehicle and an external server, the method comprising:

modulating the digital data to include frequency characteristics of vowel and consonant of the voice; and

transceiving the modulated signal through a voice channel.

19. The method of claim 18 wherein the modulating the digital data comprises:

converting the digital data to generate a signal including the frequency characteristics of vowel and consonant of the voice;

sending the signal from a telematics terminal to a cell phone; and

modulating the transmitted signal to transceive through the voice channel.

20. The method of claim 19, wherein the signal is sent through a Bluetooth communication.