Communication system and method

• US 9,680,673 B2
• Filed: 03/04/2016
• Issued: 06/13/2017
• Est. Priority Date: 03/11/2015
• Status: Active Grant

• Current Assignee: Realtek Semiconductor Corp.
• Original Assignee: Realtek Semiconductor Corp.
• Inventors: Tseng, Ta-Chin, Kuo, Shieh-Hsing, Lao, Heng Cheong, Chuang, Sheng-Fu
• Primary Examiner(s): PANWALKAR, VINEETA S
• Application Number:
  US15/060,617
• Publication Number:
  US 20160269204A1
• Time in Patent Office: 466 Days
• CPC Class Codes: H04B 3/50 Systems for transmission between fixed stations via two-conductor transmission lines H04B3/54 takes precedence
• CPC Class Codes: H04L 25/03866 using scrambling
• CPC Class Codes: H04L 25/4923 using ternary codes H04L25/4927 takes precedence
• CPC Class Codes: H04L 25/4925 using balanced bipolar ternary codes

Abstract

A communication system comprises a packet stream transforming unit, a mapping unit and a transmission unit. The packet stream transforming unit is configured to receive a 4-bit packet stream and transform the 4-bit packet stream into a 6-bit packet stream. The mapping unit is configured to map the 6-bit packet stream into multiple ternary bit streams, and the mapping unit maps at least one idle symbol into the ternary bit streams according to at least one particular bit of the at least one idle symbol of the 6-bit packet stream. The transmission unit is configured to transmit the ternary bit streams to a remote communication device through a cable.

Claims

1. A communication system, comprising:

a packet stream transforming unit configured to receive a 4-bit packet stream and transform the 4-bit packet stream into a 6-bit packet stream;

a mapping unit configured to map the 6-bit packet stream into a plurality of ternary bit streams, and the mapping unit maps at least one idle symbol into the ternary bit streams in accordance with at least one particular bit of the at least one idle symbol of the 6-bit packet stream; and

a transmission unit configured to transmit the ternary bit streams to a remote communication device through a cable.

2. The communication system of claim 1, wherein the at least one particular bit comprises a least significant bit, and the mapping unit is configured to determine a ternary value of a first bit stream of the ternary bit streams in accordance with a binary value of the least significant bit.

3. The communication system of claim 1, wherein the at least one particular bit comprises a first middle bit and a most significant bit, and the mapping unit is configured to determine a ternary value of a second bit stream of the ternary bit streams in accordance with binary values of the first middle bit and the most significant bit.

4. The communication system of claim 1, wherein the at least one particular bit comprises a first middle bit and a second middle bit, and the mapping unit is configured to determine a ternary value of a third bit stream of the ternary bit streams in accordance with binary values of the first middle bit and the second middle bit.

5. The communication system of claim 1, wherein the mapping unit adds at least one delimiter into the ternary bit streams, and three continuous nonzero ternary values of the at least one delimiter are not exactly the same.

6. The communication system of claim 1, wherein the packet stream transforming unit further comprising:

a bit number transforming unit configured to receive the 4-bit packet stream and transform the 4-bit packet stream into the 6-bit packet stream;

a data scrambler; and

a side stream scrambler, wherein the data scrambler and the side stream scrambler are configured to scramble the number of bit symbols of 0 and 1 of the 6-bit packet stream.

7. The communication system of claim 6, wherein the bit number transforming unit is configured to transform the 4-bit packet stream into the 6-bit packet stream through a padding method.

8. The communication system of claim 6, wherein the bit number transforming unit is configured to transform the 4-bit packet stream into a 3-bit packet stream, then transform the 3-bit packet stream into the 6-bit packet stream through a first-in first-out method.

9. The communication system of claim 6, wherein the side stream scrambler comprises a delayer and an adder.

10. A communication method, comprising:

transforming a 4-bit packet stream into a 6-bit packet stream;

mapping the 6-bit packet stream into a plurality of ternary bit streams, and mapping at least one idle symbol into the ternary bit streams in accordance with at least one particular bit of the at least one idle symbol of the 6-bit packet stream; and

transmitting the ternary bit streams to a remote communication device through a cable.

11. The communication method of claim 10, wherein mapping the at least one idle symbol into the ternary bit streams in accordance with the at least one particular bit comprises:

determining a ternary value of a first bit stream of the ternary bit streams in accordance with a binary value of a least significant bit, wherein the at least one particular bit comprises the least significant bit.

12. The communication method of claim 10, wherein mapping the at least one idle symbol into the ternary bit streams in accordance with the at least one particular bit comprises:

determining a ternary value of a second bit stream of the ternary bit streams in accordance with binary values of a first middle bit and a most significant bit, wherein the at least one particular bit comprises the first middle bit and the most significant bit.

13. The communication method of claim 10, wherein mapping the at least one idle symbol into the ternary bit streams in accordance with the at least one particular bit comprises:

determining a ternary value of a third bit stream of the ternary bit streams in accordance with binary values of a first middle bit and a second middle bit,

wherein the at least one particular bit comprises the first middle bit and the second middle bit.

14. The communication method of claim 10, further comprising:

adding at least one delimiter into the ternary bit streams, and three continuous nonzero ternary values of the at least one delimiter are not exactly the same.

15. The communication method of claim 10, wherein transforming the 4-bit packet stream into the 6-bit packet stream comprises:

transforming the 4-bit packet stream into the 6-bit packet stream through a padding method.

16. The communication method of claim 10, wherein transforming the 4-bit packet stream into the 6-bit packet stream comprises:

transforming the 4-bit packet stream into a 3-bit packet stream, then transform the 3-bit packet stream into the 6-bit packet stream through a first-in first-out method.

17. The communication method of claim 10, wherein transforming the 4-bit packet stream into the 6-bit packet stream comprises:

scrambling the number of bit symbols of 0 and 1 of the 6-bit packet stream.