Transmitting digital video and data over the same wires

• US 20140313944A1
• Filed: 06/29/2014
• Published: 10/23/2014
• Est. Priority Date: 02/07/2007
• Status: Active Grant

• Current Assignee: Valens Semiconductor Ltd.
• Original Assignee: Valens Semiconductor Ltd.
• Inventors: Lida, Eyran, Banet, Nadav, Cohen, Gaby Gur
• Granted Patent: US 9,215,059 B2
• Time in Patent Office: Days
• US Class Current: 370/276
• CPC Class Codes: H04L 25/4919 using balanced multilevel codes H04L25/4927 takes precedence
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/143 for modulated signals H04L5/1469 takes precedence
• 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 5/38 Transmitter circuitry for the transmission of television signals according to analogue transmission standards H04N5/14 takes precedence

Abstract

A communication device configured to transmit and receive simultaneously, over the same wire, unidirectional high definition video and bidirectional data. The communication device includes a hybrid circuit coupled to a cable made of wires, and a transceiver. The transceiver is configured to transmit, over one of the cable'"'"'s wires, Transition Minimized Differential Signaling (TMDS) data and source-to-sink direction of bidirectional data. The transceiver is further configured to receive the opposite direction of the bidirectional data over the same wire and simultaneously with the transmitting.

Claims

1. A communication device configured to transmit and receive simultaneously, over the same wire, unidirectional high definition video and bidirectional data, comprising:

a hybrid circuit coupled to a cable made of wires;

a transceiver configured to transmit, over a wire comprised in the cable, Transition Minimized Differential Signaling (TMDS) data and source-to-sink direction of bidirectional data;

wherein the TMDS data comprises;

video pixel data, and horizontal and vertical video synchronization data; and

the transceiver is further configured to receive, over the same wire and simultaneously with the transmitting, opposite direction of the bidirectional data.

2. The communication device of claim 1, wherein the transceiver is further configured to provide a better signal protection to the bidirectional data compared to the signal protection provided to the TMDS data.

3. The communication device of claim 2, wherein the bidirectional data is transmitted using a first modulation and the TMDS data is transmitted using a second modulation.

4. The communication device of claim 3, wherein the first and the second modulations are pulse amplitude modulations using at least partially overlapping subsets of same symbol set.

5. The communication device of claim 1, wherein the transceiver is further configured to transfer bidirectional High Definition Multimedia Interface (HDMI) control data.

6. The communication device of claim 5, wherein the HDMI control data comprises one or more of the following:

Inter-Integrated Circuit (I2C), Consumer Electronics Control (CEC), Hot Plug Detection (HPD), or 5V indication.

7. The communication device of claim 1, wherein the cable is selected from the group of:

Category 5 cable (CAT5), CAT5e, CAT6, CAT6a, and CAT7.

8. The communication device of claim 1, wherein the transceiver is further configured to transmit two or more TMDS streams.

9. The communication device of claim 1, wherein the transceiver is further configured to transmit two or more High Definition Multimedia Interface (HDMI) streams, including their controls.

10. The communication device of claim 1, wherein the transceiver is further configured to transmit one or more of the following:

Digital Video Interfacing (DVI) control signal data, High Definition Multimedia Interface (HDMI) control signal data, Inter-Integrated Circuit (I2C), Consumer Electronics Control (CEC), Hot Plug Detection (HPD), 5V indication, or a combination thereof.

11. The communication device of claim 1, wherein the bidirectional data comprises full duplex Ethernet.

12. A communication device configured to transfer simultaneous transmissions of a Transition Minimized Differential Signaling (TMDS) data and bidirectional data, comprising:

a hybrid circuit coupled to a cable made of wires; and

a transceiver configured to transmit and receive, over the same wire simultaneously, the TMDS data and source-to-sink direction of the bidirectional data, and opposite direction of the bidirectional data;

wherein the TMDS data comprises;

video pixel data, and horizontal and vertical video synchronization data;

the transceiver is further configured to modulate the source-to-sink direction of the bidirectional data using a first modulation; and

the transceiver is further configured to modulate the TMDS data, which is also in the source-to-sink direction, using a second modulation;

wherein the first modulation provides the source-to-sink direction of the bidirectional data a higher protection against noise compared to protection against noise provided to the source-to-sink direction of the TMDS data by the second modulation.

13. The communication device of claim 12, wherein the first and second modulations are pulse amplitude modulations.

14. The communication device of claim 12, wherein the first and second modulations use at least partially overlapping subsets of same symbol set.

15. The communication device of claim 12, wherein the transceiver is further configured to transfer bidirectional High Definition Multimedia Interface (HDMI) control data.

16. The communication device of claim 15, wherein the HDMI control data comprises one or more of the following:

Inter-Integrated Circuit (I2C), Consumer Electronics Control (CEC), Hot Plug Detection (HPD), or 5V indication.

17. The communication device of claim 12, wherein the cable is selected from the group of:

Category 5 cable (CAT5), CAT5e, CAT6, CAT6a, and CAT7.

18. The communication device of claim 12, wherein the transceiver is further configured to transfer two or more TMDS streams.

19. The communication device of claim 12, wherein the transceiver is further configured to transfer two or more High Definition Multimedia Interface (HDMI) streams, including their controls.

20. The communication device of claim 12, wherein the transceiver is further configured to transmit one or more of the following:

Digital Video Interfacing (DVI) control signal data, High Definition Multimedia Interface (HDMI) control signal data, Inter-Integrated Circuit (I2C), Consumer Electronics Control (CEC), Hot Plug Detection (HPD), 5V indication, or a combination thereof.