Displayport over USB Mechanical Interface

Patent metadata

Field	Value
Publication number	US-2016147704-A1
Application number	US-201314011958-A
Country	US
Kind code	A1
Filing date	Aug 28, 2013
Priority date	Sep 21, 2012
Publication date	May 26, 2016
Grant date	—

Abstract

Various exemplary embodiments relate to a function selector device in a system using a DisplayPort protocol over a universal serial bus (USB) mechanical interface, including: a first port configured to transmit/receive a USB SSTX signal; a second port configured to transmit/receive a USB SSRX signal; a third port configured to transmit/receive a DisplayPort lane signal; a fourth port configured to transmit/receive a DisplayPort AUX signal; a fifth port configured to transmit/receive a DisplayPort HPD signal; a sixth port configured to connect to SSTX pins of a USB 3.0 receptacle; and a seventh port configured to connect to SSRX pins of a USB 3.0 receptacle.

First claim

1 . A function selector device in a system using a DisplayPort protocol over a universal serial bus (USB) mechanical interface, comprising:
a first port configured to transmit/receive a USB SSTX signal; a second port configured to transmit/receive a USB SSRX signal; a third port configured to transmit/receive a DisplayPort lane signal; a fourth port configured to transmit/receive a DisplayPort AUX signal; a fifth port configured to transmit/receive a DisplayPort HPD signal; a sixth port configured to connect to SSTX pins of a USB 3.0 receptacle; and a seventh port configured to connect to SSRX pins of a USB 3.0 receptacle.

2 . The function selector device of claim 1 , wherein the seventh port is configured to transmit a DisplayPort AUX signal received at the fourth port.

3 . The function selector device of claim 2 , wherein the seventh port is configured to transmit a DisplayPort HPD signal received at the fifth port.

4 . The function selector device of claim 1 , wherein the function selector determines that the voltage at the sixth port is below a detection threshold and then connects the first port to the sixth port and connects the second port to the seventh port.

5 . The function selector device of claim 1 , wherein the function selector determines that the voltage at the sixth port is above a detection threshold and then connects the third port to the sixth port and connects the fourth and fifth ports to the seventh port.

6 . The function selector device of claim 1 , wherein the function selector determines that the voltage at the fifth port is below a hot plug detection threshold and then connects the first port to the sixth port and connects the second port to the seventh port.

7 . The function selector device of claim 1 , wherein the function selector determines that the voltage at the fifth port is above a hot plug detection threshold and then connects the third port to the seventh port and connects the fourth and fifth ports to the sixth port.

8 . A system including the function selector device of claim 1 , wherein the system is one of a display, television, monitor, keyboard, mouse, track pad, trackball, a phone, tablet, music player, GPS receiver, and video player.

9 . A method of transmitting a SuperSpeed protocol over a universal serial bus (USB) mechanical interface using a function selector, comprising:
receiving a USB SSTX signal at a USB SSTX port; determining that the voltage at the SSTX receptacle port is below a detection threshold; connecting the USB SSTX port to a SSTX receptacle port connected to a SSTX connector of a USB receptacle; and connecting a USB SSRX port that receives a USB SSRX signal to a SSRX receptacle port connected to a SSRX connector of a USB receptacle.

10 . The method of claim 9 , further comprising:
determining that the voltage at the SSTX receptacle port is above the detection threshold; connecting a DisplayPort lane port that receives a DisplayPort lane signal to the SSTX receptacle port; and connecting a AUX port that transmits/receives a DisplayPort AUX signal to the SSRX receptacle port.

11 . A method of receiving a DisplayPort protocol over a universal serial bus (USB) mechanical interface using a function selector, comprising:
receiving a USB SSTX signal at a USB SSTX port; determining that the voltage at the USB SSTX port is above a detection threshold; connecting a DisplayPort lane port that receives a DisplayPort lane signal to a SSTX receptacle port connected to a SSTX connector of a USB receptacle; and connecting a AUX port that receives a DisplayPort AUX signal to a SSRX receptacle port connected to a SSRX connector of a USB receptacle.

12 . A method of receiving a SuperSpeed protocol over a universal serial bus (USB) mechanical interface using a function selector, comprising:
receiving a DisplayPort HPD signal at a HPD port; determining that the voltage at the HPD port is below a hot plug detection threshold; connecting a USB SSTX port that receives a USB SSTX signal to a SSTX receptacle port connected to a SSTX connector of a USB receptacle; and connecting a USB SSRX port that receives a USB SSRX signal to a SSRX receptacle port connected to a SSRX connector of a USB receptacle.

13 . The method of claim 12 , further comprising:
determining that the voltage at the HPD port is above the hot plug detection threshold; connecting a DisplayPort lane port that receives a DisplayPort lane signal to the SSRX receptacle port; connecting a AUX port that receives a DisplayPort AUX signal to the SSTX receptacle port; and connecting a HPD port that receives a DisplayPort HPD signal to the SSTX receptacle port.

14 . A method of transmitting a DisplayPort protocol over a universal serial bus (USB) mechanical interface using a function selector, comprising:
receiving a DisplayPort HPD signal at a HPD port; determining that the voltage at the HPD port is above a hot plug detection threshold; connecting a DisplayPort lane port that receives a DisplayPort lane signal to a SSTX receptacle port connected to a SSTX connector of a USB receptacle; connecting a AUX port that receives a DisplayPort AUX signal to a SSRX receptacle port connected to a SSRX connector of a USB receptacle; and connecting a HPD port that receives a DisplayPort HPD signal to the SSRX receptacle port.

15 . The method of claim 14 , further comprising:
determining that the voltage at the HPD port is below the hot plug detection threshold for a time less than an interrupt time threshold; and maintaining the connection between the DisplayPort lane port and the SSTX receptacle port and the connection between the AUX and HPD ports and the seventh port.

Assignees

• Nxp Bv

Inventors

• Guillerm Nicolas
• Natarajan Krishnan Tiruchi

Classifications

• G06F13/4068

  Electrical coupling · CPC title

• G06F13/409

  Mechanical coupling (back panels H05K7/1438) · CPC title

• G06F13/4282 Primary

  on a serial bus, e.g. I2C bus, SPI bus (on daisy chain buses G06F13/4247) · CPC title