Data Communication System and Data Communication Method

• US 20100184385A1
• Filed: 03/13/2009
• Published: 07/22/2010
• Est. Priority Date: 01/22/2009
• Status: Active Grant

• Current Assignee: AVerMedia Technologies, Inc.
• Original Assignee: AVerMedia Technologies, Inc.
• Inventors: Chen, Yu-Hsiang, Lin, Yung-Da, Chang, Sheng-Cheng, Liu, Kuan-Yu
• Granted Patent: US 8,078,095 B2
• Time in Patent Office: Days
• US Class Current: 455/73
• CPC Class Codes: H04H 40/90 specially adapted for satellite broadcast receiving
• CPC Class Codes: H04N 21/4143 embedded in a Personal Computer [PC]
• CPC Class Codes: H04N 21/6143 involving transmission via a satellite
• CPC Class Codes: H04N 7/20 Adaptations for transmission via a GHz frequency band, e.g. via satellite

Abstract

A data communication system and a data communication method are provided. The data communication system comprises a bidirectional cable, an antenna, a receiving and a function circuit block. The bidirectional cable transfers data through a high and a low frequency band. The antenna is to receive and transfer the analog data signal through the high frequency band of the bidirectional cable. The receiving circuit block comprises a receiving module to receive the analog data signal from the high frequency band and converts the analog data signal into a digital data to a host and a first control signal processing module to couple a control signal to the low frequency band. The function circuit block comprises a second control signal processing module to decouple the control signal from the low frequency band and a function module to perform an adjustment on the data communication system according to the control signal.

Claims

1. A data communication system comprising:

a bidirectional cable to transfer data through a high frequency band and a low frequency band;

an antenna to receive an analog data signal and transfer the analog data signal through the high frequency band of the bidirectional cable;

a receiving circuit block comprising;

a receiving module to receive the analog data signal from the high frequency band and converts the analog data signal into a digital data to a host; and

a first control signal processing module to couple a control signal to the low frequency band; and

a function circuit block comprising;

a second control signal processing module to decouple the control signal from the low frequency band; and

a function module to further perform an adjustment on the data communication system according to the control signal.

2. The data communication system of claim 1, wherein the host generates the control signal and sends the control signal to the first control signal processing module, the function module is a power module to perform a power adjustment on a low noise block (LNB).

3. The data communication system of claim 2, further comprising a buffer, the host substantially sends the control signal to the first control signal processing module through the buffer.

4. The data communication system of claim 1, wherein the second control signal processing module comprises a low pass filter to decouple the control signal from the low frequency band.

5. The data communication system of claim 1, further comprising a first DC (direct current) blocking circuit and a second DC blocking circuit, wherein the first DC blocking circuit is connected between the receiving module and the bidirectional cable to block a direct current between the receiving module and the bidirectional cable, the second DC blocking circuit is connected between the antenna and the bidirectional cable to block a direct current between the antenna and the bidirectional cable.

6. The data communication system of claim 5, wherein the first and the second DC blocking circuit are a capacitor respectively.

7. The data communication system of claim 1, wherein the first and the second control signal processing module are an inductor respectively.

8. A data communication system comprising:

a bidirectional cable to transfer data through a high frequency band and a low frequency band;

an antenna to receive an analog data signal and transfer the analog data signal through the high frequency band of the bidirectional cable;

a function circuit block comprising;

a function module to generate a control signal; and

a second control signal processing module to couple a control signal to the low frequency band; and

a receiving circuit block comprising;

a receiving module to receive the analog data signal from the high frequency band and converts the analog data signal into a digital data to a host; and

a first control signal processing module to decouple the control signal from the low frequency band to make the host perform an adjustment on the data communication system according to the control signal.

9. The data communication system of claim 8, wherein the function module is an infrared signal receiver to receive an infrared signal to generate the control signal according to the infrared signal.

10. The data communication system of claim 8, wherein the function module is a switch to generate the control signal.

11. The data communication system of claim 8, wherein the first control signal processing module comprises a low pass filter to decouple the control signal from the low frequency band.

12. The data communication system of claim 8, further comprising a first DC (direct current) blocking circuit and a second DC blocking circuit, wherein the first DC blocking circuit is connected between the receiving module and the bidirectional cable to block a direct current between the receiving module and the bidirectional cable, the second DC blocking circuit is connected between the antenna and the bidirectional cable to block a direct current between the antenna and the bidirectional cable.

13. The data communication system of claim 12, wherein the first and the second DC blocking circuit are a capacitor respectively.

14. The data communication system of claim 8, wherein the first and the second control signal processing module are an inductor respectively.

15. A data communication method adapted in a data communication system, wherein the data communication system comprises an antenna, a receiving circuit block, a function circuit block and a bidirectional cable connected between the receiving and the function circuit block, the data communication method comprises the steps of:

receiving an analog data signal through the antenna and further transferring the analog data signal through a high frequency band of the bidirectional cable;

receiving the analog data signal from the high frequency band and converting the analog data signal into a digital data to a host;

coupling a control signal from the receiving circuit block to the low frequency band;

decoupling the control signal from the low frequency band to the function circuit block; and

performing an adjustment on the data communication system according to the control signal.

16. The data communication method of claim 15, wherein the host generates the control signal and sends the control signal to the first control signal processing module, the function circuit block comprises a power module to perform a power adjustment on a low noise block (LNB).

17. A data communication method adapted in a data communication system, wherein the data communication system comprises an antenna, a receiving circuit block, a function circuit block and a bidirectional cable connected between the receiving and the function circuit block, the data communication method comprises the steps of:

receiving an analog data signal through the antenna and further transferring the analog data signal through a high frequency band of the bidirectional cable;

receiving the analog data signal from the high frequency band and converting the analog data signal into a digital data to a host;

coupling a control signal from the function circuit block to the low frequency band;

decoupling the control signal from the low frequency band to the receiving circuit block; and

performing an adjustment on the data communication system according to the control signal.

18. The data communication method of claim 17, wherein the function circuit block comprises an infrared signal receiver to receive an infrared signal to generate the control signal according to the infrared signal.

19. The data communication method of claim 17, wherein the function circuit block comprises a switch to generate the control signal.