Using a standard USB Type-C connector to communicate both USB 3.x and displayport data

Patent metadata

Field	Value
Publication number	US-10289584-B2
Application number	US-201715399402-A
Country	US
Kind code	B2
Filing date	Jan 5, 2017
Priority date	Jan 6, 2016
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

According to one embodiment, an electronic device includes a USB Type-C connector connected to a second electronic device, a processor connected to the USB Type-C connector and including four terminals outputting an image signal, and a USB controller connected to the USB Type-C connector and including two terminals outputting USB 3.x signal. The USB Type-C connector includes two USB 2.0 pins D and D defined under USB Type-C standard and four USB 3.x pins TX1, RX1, TX2 and RX2 defined under the USB Type-C standard. The image signal and the USB 3.x signal are output via the two USB 2.0 pins D and D and the four USB 3.x pins TX1, RX1, TX2 and RX2.

First claim

What is claimed is:

1. An electronic device, comprising:
a USB Type-C connector connectable to a second electronic device, the connector including at least two data pins defined under USB 2.0 standard and four data pins defined under a USB 3.x standard;
a first signal generator that outputs four image signals;
a second signal generator that outputs two USB 3.x signals which conforms to the USB 3.x standard;
a first multiplexer including inputs coupled to the first signal generator and the second signal generator and outputs coupled to the four data pins defined under the USB 3.x standard of the USB Type-C connector;
a second multiplexer including inputs coupled to the first signal generator and outputs coupled to the two data pins defined under the USB 2.0 standard of the USB Type-C connector; and
a controller that receives identification information of the second electronic device and controls connection of the inputs of the first multiplexer to the outputs of the first multiplexer based on the identification information, and controls connection of the inputs of the second multiplexer to outputs of the second multiplexer based on the identification information,
wherein
the controller controls the first multiplexer and the second multiplexer such that the four image signals and the two USB 3.x signals are output to the second electronic device via the two data pins defined under the USB 2.0 standard and the four data pins defined under the USB 3.x standard.

2. The electronic device of claim 1 , wherein
the four image signals comprise a first signal of lane 0, a second signal of lane 1, a third signal of lane 2, and a fourth signal of lane 3 which conform to DisplayPort standard;
the four data pins defined under the USB 3.x standard comprise a first pair of data pins and a second pair of data pins;
the controller controls the first multiplexer such that the two USB 3.x signals are output to the second electronic device via the first pair of data pins and the first signal of lane 0 and the second signal of lane 1 are output to the second electronic device via the second pair of data pins, and controls the second multiplexer such that the third signal of lane 2 and the fourth signal of lane 3 are output to the second electronic device via the two data pins defined under the USB 2.0 standard.

3. The electronic device of claim 1 , wherein
the second signal generator further outputs a USB 2.0 signal which conforms to the USB 2.0 standard;
the four image signals comprise a first signal of lane 0, a second signal of lane 1, a third signal of lane 2, and a fourth signal of lane 3 which conform to DisplayPort standard;
the four data pins defined under the USB 3.x standard comprise a first pair of data pins and a second pair of data pins;
the controller controls the first multiplexer such that the two USB 3.x signals are output to the second electronic device via the first pair of data pins and the first signal of lane 0 and the second signal of lane 1 are output to the second electronic device via the second pair of data pins, and controls the second multiplexer such that the USB 2.0 signal is output to the second electronic device via the two data pins defined under the USB 2.0 standard.

4. The electronic device of claim 1 , wherein
the second signal generator further outputs a USB 2.0 signal which conforms to the USB 2.0 standard;
the four image signals comprise a first signal of lane 0, a second signal of lane 1, a third signal of lane 2, and a fourth signal of lane 3 which conform to DisplayPort standard;
the controller determines a type of the second electronic device;
when the controller determines that the type of the second electronic device is a first type, the controller controls the first multiplexer and the second multiplexer such that the first signal of lane 0, the second signal of lane 1, the third signal of lane 2, the fourth signal of lane 3, and the two USB 3.x signals are output to the second electronic device via the two data pins defined under the USB 2.0 standard and the four data pins defined under the USB 3.x standard; and
when the controller determines that the type of the second electronic device is not the first type, the controller controls the first multiplexer and the second multiplexer such that the first signal of lane 0, the second signal of lane 1, and the two USB 3.x signals are output to the second electronic device via the two data pins defined under the USB 2.0 standard and the four data pins defined under the USB 3.x standard or controls the first multiplexer and the second multiplexer such that the first signal of lane 0, the second signal of lane 1, the third signal of lane 2, and the fourth signal of lane 3 are output to the second electronic device via the four data pins defined under the USB 3.x standard.

5. The electronic device of claim 4 , wherein
the four data pins defined under the USB 3.x standard comprise a first pair of data pins and a second pair of data pins; and
when the controller determines that the type of the second electronic device is a first type, the controller controls the first multiplexer such that the two USB 3.x signals are output to the second electronic device via the first pair of data pins and the first signal of lane 0 and the second signal of lane 1 are output to the second electronic device via the second pair of data pins, and controls the second multiplexer such that the third signal of lane 2 and the fourth signal of lane 3 are output to the second electronic device via the two data pins defined under the USB 2.0 standard.

6. The electronic device of claim 4 , wherein
the four data pins defined under the USB 3.x standard comprise a first pair of data pins and a second pair of data pins; and
when the controller determines that the type of the second electronic device is a second type, the controller controls the first multiplexer such that the two USB 3.x signals are output to the second electronic device via the first pair of data pins and the first signal of lane 0 and the second signal of lane 1 are output to the second electronic device via the second pair of data pins, and controls the second multiplexer such that the USB 2.0 signal is output to the second electronic device via the two data pins defined under the USB 2.0 standard.

7. The electronic device of claim 6 , wherein
the two USB 3.x signals output from the first pair of data pins are supplied to a third electronic device via two terminals of the second electronic device which conform to USB 3.x standard, and
the first signal of lane 0 and the second signal of lane 1 output from the second pair of data pins are supplied to the third electronic device via terminals of the second electronic device which conform to Displayport standard.

8. The electronic device of claim 4 , wherein
the four data pins defined under the USB 3.x standard comprise a first pair of data pins and a second pair of data pins; and
when the controller determines that the type of the second electronic device is a third type, the controller controls the first multiplexer such that the first signal of lane 0 and the second signal of lane 1 are output to the second electronic device via the first pair of data pins and the third signal of lane 2 and the fourth signal of lane 3 are output to the second electronic device via the second pair of data pins, and controls the second multiplexer such that the USB 2.0 signal is output to the second electronic device via the two data pins defined under the USB 2.0 standard.

9. The electronic device of claim 8 , wherein
the first signal of lane 0 and the second signal of lane 1 output from the first pair of data pins and the third signal of lane 2 and the fourth signal of l

Assignees

• Toshiba Client Solutions Co Ltd

Inventors

• Chiba Hiroaki

Classifications

• G06F13/385 Primary

  for adaptation of a particular data processing system to different peripheral devices · CPC title

• G06F13/4282

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