Eyewear having current consumption optimization of wireless system interface

Patent metadata

Field	Value
Publication number	US-11979832-B2
Application number	US-202117517392-A
Country	US
Kind code	B2
Filing date	Nov 2, 2021
Priority date	Nov 2, 2021
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

Eyewear having a high-speed wireless transceiver, including a processor having a high-speed interface for communicating high-speed communications and a low-speed interface for communicating low-speed communications. The high-speed interface is disabled to have no standby current and only the low-speed interface is used when only low-speed communications are needed to save current. When communications are received via the high-speed wireless transceiver, only the low-speed interface is initially used, and the high-power interface is later used if necessary. The high-speed interface can be a high-speed universal serial bus (USB) interface, and the low-speed interface can be a universal asynchronous receiver-transmitter (UART) interface. A USB hub is controlled by the processor to selectively enable the USB interface.

First claim

What is claimed is:

1. Eyewear, comprising:
a frame;
an optical member;
a display coupled to the optical member;
a wireless transceiver; and
a processor having a high-speed interface coupled to the wireless transceiver, and low-speed interface coupled to the wireless transceiver, the processor is configured to use the high-speed interface for wireless high-speed communications, to use the low-speed interface for wireless low-speed communications, turn off the high-speed interface by sending a control signal from a universal serial bus (USB) control port of the processor to a switch after waiting for a fixed time period, when the high-speed interface is not communicating, in order to cause the high-speed interface to consume no standby power, and while the low-speed interface remains on, wherein the low-speed interface is a universal asynchronous receiver-transmitter (UART) interface, and wherein the high-speed interface is a USB-interface.

2. The eyewear of claim 1 , wherein the eyewear further includes a controller configured to selectively control when the high-speed interface is enabled.

3. The eyewear of claim 1 , wherein the eyewear further includes a USB hub configured to selectively control when the high-speed interface is enabled.

4. The eyewear of claim 1 , wherein the UART interface is always on.

5. The eyewear of claim 1 , wherein when the wireless transceiver initially receives data, only the low-speed interface is configured to be used by the processor for receiving the initial data.

6. The eyewear of claim 5 , wherein the processor is configured to determine if the initial data is associated with high-speed data, and the processor is configured to responsively use the high-speed interface only if the initial data is determined to be associated with high-speed data.

7. A method of use of eyewear comprising a frame, an optical member, a display coupled to the optical member, a wireless transceiver, and a processor having a high-speed interface coupled to the wireless transceiver, and low-speed interface coupled to the wireless transceiver, comprising:
sending, by the processor, high-speed wireless communications using the high-speed interface via the wireless transceiver, wherein the high-speed interface is a universal serial bus (USB) interface;
sending, by the processor, low-speed wireless communications using the low-speed interface via the wireless transceiver, wherein the low-speed interface is a universal asynchronous receiver-transmitter (UART) interface;
disabling, by the processor, the high-speed interface and using only the low-speed interface such that there is no standby current used by the high-speed interface, the disabling is performed by sending a control signal from a USB control port of the processor to a switch after waiting for a fixed time period; and
enabling, by the processor, the high-speed interface when the processor determines it needs to send or receive high-speed communications.

8. The method of claim 7 , wherein the eyewear further includes a controller selectively controlling when the high-speed interface is enabled.

9. The method of claim 7 , wherein the eyewear further includes a USB hub selectively controlling when the high-speed interface is enabled.

10. The method of claim 7 , wherein the UART interface is always on.

11. The method of claim 7 , wherein when the wireless receiver initially receives data, only the low-speed interface is used by the processor for receiving the initial data.

12. The method of claim 11 , wherein the processor determines if the initial data is associated with high-speed data, and the processor responsively uses the high-speed interface only if the initial data is determined to be associated with high-speed data.

13. A non-transitory computer-readable medium storing program code which, when executed, is operative to cause an electronic processor of an eyewear device having a frame, an optical member, a display coupled to the optical member, a wireless transceiver, a processor having a high-speed interface coupled to the wireless transceiver, and low-speed interface coupled to the wireless transceiver, to perform the steps of:
sending high-speed wireless communications using the high-speed interface via the wireless transceiver, wherein the high-speed interface is a universal serial bus (USB) interface;
sending low-speed wireless communications using the low-speed interface via the wireless transceiver, wherein the low-speed interface is a universal asynchronous receiver-transmitter (UART) interface;
disabling the high-speed interface and using only the low-speed interface such that there is no standby current used by the high-speed interface, the disabling is performed by sending a control signal from a USB control port of the processor to a switch after waiting for a fixed time period; and
enabling the high-speed interface when the processor determines it needs to send or receive high-speed communications.

14. The non-transitory computer-readable medium of claim 13 , wherein the code is operative such that the electronic processor selectively controls when the high-speed interface is enabled.

15. The non-transitory computer-readable medium of claim 13 , wherein the code is operative such that when the wireless receiver initially receives data, only the low-speed interface is used for receiving the initial data.

16. The non-transitory computer-readable medium of claim 15 , wherein the code is operative such that the processor determines when the initial data is associated with high-speed data, and the processor responsively uses the high-speed interface only if the initial data is determined to be associated with high-speed data.

Assignees

• Vadivelu Praveen Babu
• Snap Inc

Inventors

• Vadivelu Praveen Babu

Classifications

• H04W52/0274

  by switching on or off the equipment or parts thereof · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title

• H04W52/028

  switching on or off only a part of the equipment circuit blocks · CPC title

• H04W52/0229 Primary

  where the received signal is a wanted signal · CPC title

• G06F3/013

  Eye tracking input arrangements (G06F3/015 takes precedence) · CPC title