Method and system for enabling video communication via ethernet utilizing asymmetrical physical layer operations

• US 9,374,614 B2
• Filed: 08/18/2014
• Issued: 06/21/2016
• Est. Priority Date: 05/14/2007
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Diab, Wael, Kim, Yong, Powell, Scott
• Primary Examiner(s): Kumar, Pankaj
• Assistant Examiner(s): ANDRAMUNO, FRANKLIN S
• Application Number:
  US14/462,270
• Publication Number:
  US 20140359676A1
• Time in Patent Office: 673 Days
• Field of Search: 725/80, 725/93
• US Class Current: 1/1
• CPC Class Codes: G09G 2370/10 Use of a protocol of communication by packets in interfaces along the display data pipeline
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: H04L 12/2805 Home Audio Video Interoperability [HAVI] networks
• CPC Class Codes: H04L 12/2816 Controlling appliance services of a home automation network by calling their functionalities arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station; in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom H04Q9/00
• CPC Class Codes: H04L 2012/2849 Audio/video appliances
• CPC Class Codes: H04N 19/172 the region being a picture, frame or field
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/43632 involving a wired protocol, e.g. IEEE 1394 high-speed IEEE 1394 serial bus H04L12/40052
• CPC Class Codes: H04N 21/6373 for rate control , e.g. request to the server to modify its transmission rate flow control in packet networks H04L47/10
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 7/106 for domestic distribution
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: Y02D 30/00 Reducing energy consumption in communication networks

Abstract

Signals may be communicated between a video source and a video rendering device via and asymmetrical multi-rate Ethernet physical layer (PHY). The asymmetric multi-rate PHY may support multiple rates. The asymmetrical multi-rate Ethernet PHY may handle compressed and/or uncompressed, encrypted and/or unencrypted video signals and may handle audio/video bridging. One or more of the communicated signals may be modified by an echo cancellation operation, a near end cross talk (NEXT) cancellation operation, equalization, a far end cross talk (FEXT) cancellation operation and/or a forward error correction (FEC) operation. An aggregate communication rate may be evenly or unevenly distributed among one or more links coupling the video signal source to the video rendering device. A plurality of links coupling the video signal source to said video rendering device may also be aggregated.

Claims

1. A wired communication method for a video source device comprising an Ethernet MAC and an asymmetric multi-rate Ethernet PHY, the wired communication method comprising:

transmitting data from the asymmetric multi-rate Ethernet PHY over a twisted-pair wire of an Ethernet cable at a first downstream data rate;

receiving data at the asymmetric multi-rate Ethernet PHY over the twisted pair wire at a first upstream data rate, the first downstream data rate being larger than the first upstream data rate; and

reducing the first downstream data rate to a second downstream data rate that is less than the first downstream data rate while performing a signal processing operation on the data transmitted at the first downstream data rate to at least one of extending a range of the Ethernet cable and increasing an insertion loss of the Ethernet cable.

2. The wired communication method of claim 1, further comprising:

reducing the first upstream data rate to a second upstream data rate that is less than the first upstream data rate while performing the signal processing operation on the data received at the first upstream data rate to at least one of extending the range of the Ethernet cable and increasing the insertion loss of the Ethernet cable.

3. The wired communication method of claim 1, wherein the reducing the first downstream data rate comprises utilizing multi-level signaling to reduce a symbol rate associated with the first downstream data rate.

4. The wired communication method of claim 2, wherein the reducing the first upstream data rate comprises utilizing multi-level signaling to reduce a symbol rate associated with the first upstream data rate.

5. The wired communication method of claim 1, wherein the signal processing operation comprises any one or more of an echo cancellation operation, a near end cross talk (NEXT) cancellation operation, a far end cross talk (FEXT) cancellation operation and a forward error correction (FEC) operation.

6. The wired communication method of claim 1, wherein the reducing the first downstream data rate to the second downstream data rate comprises dividing the first downstream data rate among the twisted-pair wire and a second twisted-pair wire of the Ethernet cable.

7. The wired communication method according to claim 2, wherein the reducing the first upstream data rate to the second upstream data rate comprises dividing the first upstream data rate among the twisted-pair wire and a second twisted-pair wire of the Ethernet cable.

8. A video signal source device comprising:

an Ethernet MAC; and

an asymmetric multi-rate Ethernet PHY configured to;

transmit data over a twisted-pair wire of an Ethernet cable at a first downstream data rate;

receive data over the twisted pair wire at a first upstream data rate, the first downstream data rate being larger than the first upstream data rate; and

reduce the first downstream data rate to a second downstream data rate that is less than the first downstream data rate while performing a signal processing operation on the data transmitted at the first downstream data rate to at least one of extending a range of the Ethernet cable and increasing an insertion loss of the Ethernet cable.

9. The video signal source device of claim 8, wherein the asymmetric multi-rate Ethernet PHY is further configured to reduce the first upstream data rate to a second upstream data rate that is less than the first upstream data rate while performing the signal processing operation on the data received at the first upstream data rate to at least one of extending the range of the Ethernet cable and increasing the insertion loss of the Ethernet cable.

10. The video signal source device of claim 8, wherein the asymmetric multi-rate Ethernet PHY reduces the first downstream data rate by utilizing multi-level signaling to reduce a symbol rate associated with the first downstream data rate.

11. The video signal source device of claim 9, wherein the asymmetric multi-rate Ethernet PHY reduces the first upstream data rate by utilizing multi-level signaling to reduce a symbol rate associated with the first upstream data rate.

12. The video signal source device of claim 8, wherein the signal processing operation comprises any one or more of an echo cancellation operation, a near end cross talk (NEXT) cancellation operation, a far end cross talk (FEXT) cancellation operation and a forward error correction (FEC) operation.

13. The video signal source device of claim 8, wherein the asymmetric multi-rate Ethernet PHY reduces the first downstream data rate to the second downstream data rate by dividing the first downstream data rate among the twisted-pair wire and a second twisted-pair wire of the Ethernet cable.

14. The video signal source device according to claim 9, wherein the asymmetric multi-rate Ethernet PHY reduces the first upstream data rate to the second upstream data rate by dividing the first upstream data rate among the twisted-pair wire and a second twisted-pair wire of the Ethernet cable.

15. A non-transitory machine-readable medium that stores machine readable instructions that, when executed by a machine for wired communication, cause the machine to:

transmit data from the asymmetric multi-rate Ethernet PHY over a twisted-pair wire of an Ethernet cable at a first downstream data rate;

receive data at the asymmetric multi-rate Ethernet PHY over the twisted pair wire at a first upstream data rate, the first downstream data rate being larger than the first upstream data rate; and

reduce the first downstream data rate to a second downstream data rate that is less than the first downstream data rate while performing a signal processing operation on the data transmitted at the first downstream data rate to at least one of extending a range of the Ethernet cable and increasing an insertion loss of the Ethernet cable.

16. The non-transitory machine-readable medium of claim 15, wherein when the machine readable instructions are executed by the machine for wired communication, the machine is further caused to reduce the first upstream data rate to a second upstream data rate that is less than the first upstream data rate while performing the signal processing operation on the data received at the first upstream data rate to at least one of extend the range of the Ethernet cable and increase the insertion loss of the Ethernet cable.

17. The non-transitory machine-readable medium of claim 15, wherein the reducing the first downstream data rate comprises utilizing multi-level signaling to reduce a symbol rate associated with the first downstream data rate.

18. The non-transitory machine-readable medium of claim 16, wherein the reducing the first upstream data rate comprises utilizing multi-level signaling to reduce a symbol rate associated with the first upstream data rate.

19. The non-transitory machine-readable medium of claim 15, wherein the signal processing operation comprises any one or more of an echo cancellation operation, a near end cross talk (NEXT) cancellation operation, a far end cross talk (FEXT) cancellation operation and a forward error correction (FEC) operation.

20. The non-transitory machine-readable medium of claim 15, wherein the reducing the first downstream data rate to the second downstream data rate comprises dividing the first downstream data rate among the twisted-pair wire and a second twisted-pair wire of the Ethernet cable.