Optical communication interface

• US 10,057,672 B2
• Filed: 10/04/2016
• Issued: 08/21/2018
• Est. Priority Date: 10/04/2016
• Status: Active Grant

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Thoen, Steven Mark
• Primary Examiner(s): Gauthier, Gerald
• Application Number:
  US15/285,243
• Publication Number:
  US 20180098144A1
• Time in Patent Office: 686 Days
• Field of Search: 340944, 345168, 345104, 381 74, 381107, 381309, 381311, 381380, 381381, 434236, 455418, 4555501, 600328, 704260, 704275, 367 2, 370311, 385 4, 398 3, 398 91, 398128, 713172
• CPC Class Codes: H04B 10/1143 Bidirectional transmission
• CPC Class Codes: H04B 10/116 Visible light communication
• CPC Class Codes: H04B 10/40 Transceivers
• CPC Class Codes: H04R 1/1016 Earpieces of the intra-aural type
• CPC Class Codes: H04R 1/1025 Accumulators or arrangements for charging secondary cells per se H01M10/00; charging in general H02J7/00
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones

Abstract

One example discloses an optical communication interface for a handheld device: wherein the handheld device, has an external surface; wherein the external surface includes an interior facing side and an exterior facing side; a first optical receiver, on the interior facing side of the handheld device, having an optical input and an electrical output; wherein the electrical output is coupled to circuitry; and wherein the optical input is configured to be optically coupled to a second optical transmitter on the exterior facing side of the handheld device.

Claims

1. An optical communication interface for a handheld device, wherein the handheld device has an external surface that includes an interior facing side and an exterior facing side, comprising:

a first optical receiver within a first optical window, on the interior facing side of the handheld device, having an optical input and an electrical output;

wherein the electrical output is coupled to circuitry; and

the optical input is configured to be optically coupled to a second optical transmitter on the exterior facing side of the handheld device; and

a first optical transmitter within a second optical window next to the first optical window, on the interior facing side of the handheld device, having an electrical input and an optical output, wherein the electrical input is coupled to the circuitry and the optical output is configured to be coupled to a second optical receiver on the exterior facing side of the handheld device, and information is simultaneously received and transmitted over both optical transmitter/receiver communication paths.

2. The interface of claim 1, wherein the second optical receiver and the second optical transmitter are coupled within an external surface of a second device.

3. The interface of claim 1, wherein the first optical receiver is configured to be separated from the second optical transmitter by an air gap less than one meter.

4. The interface of claim 1, wherein the handheld device is at least one of a mobile device, a medical device, a wearable device, a hearable, an earbud, or a smartphone.

5. The interface of claim 1, wherein the second device is at least one of a docking device, a base-station, a charging case, a smartphone, a computer, or a display screen surface.

6. The interface of claim 1, wherein the optical transmitter in the second device is a display screen.

7. The interface of claim 1, wherein the optical transmitter is at least one of a photodiode, or an LED diode and the optical receiver is at least one of a phototransistor, a photoconductor, or a light sensor.

8. The interface of claim 2, wherein the handheld device includes multiple sets of optical transmitters and receivers distributed at various spatial locations on the handheld device configured to flexibly connect with the second device.

9. The interface of claim 2, wherein the handheld device and second device include alignment elements configured to increase a signal-to-noise ratio between at least one optical transmitter and receiver pair.

10. The interface of claim 2, wherein the first optical transmitter and first optical receiver are configured to exchange data with the second device using optical wavelengths and the exchanged data include at least one of firmware updates, software update, file transfers, configuration or user profile set-up or reconfiguration, media storage, and application (App) program updates.

11. The interface of claim 1, wherein the optical transmitter or the optical receiver on the handheld device are also used for at least one of health monitoring or visual display.

12. The interface of claim 1, wherein each optical window is transparent or translucent over a set of optical frequencies which either the first optical receiver or first optical transmitter are configured to operate and each optical window includes at least one of transparent plastic, glass, quartz, or any material that is optically transparent to the frequencies being used.

13. The interface of claim 1, further comprising:

an encapsulation covering the exterior facing side of the handheld device.

14. The interface of claim 13, wherein the encapsulation forms at least one of a water-resistant seal, a water-tight seal, a dust-resistant seal, or a hermetic seal.

15. The interface of claim 13, wherein the encapsulation is configured to enable the optical coupling with the second optical transmitter.

16. An optical communication interface for a handheld device, wherein the handheld device has an external surface that includes an interior facing side and an exterior facing side, comprising:

a first optical transmitter within a first optical window, on the interior facing side of the handheld device, having an electrical input and an optical output, wherein the electrical output is coupled to circuitry and the optical output is configured to be coupled to a first optical receiver on the exterior facing side of the handheld device; and

a second optical transmitter within a second optical window opposite to the first optical window, on the interior facing side of the handheld device, having an electrical input and an optical output, wherein the electrical input is coupled to the circuitry and the optical output is configured to be coupled to a second optical receiver on the exterior facing side of the handheld device, and information is simultaneously received and transmitted over both optical transmitter/receiver communication paths.

17. An optical communication interface for a contactless earbud, wherein the contactless earbud has an external surface that includes an interior facing side and an exterior facing side, comprising:

a first optical receiver within a first optical window, on the interior facing side of the contactless earbud, having an optical input and an electrical output, wherein the electrical output is coupled to circuitry and the optical input is configured to be optically coupled to a second optical transmitter on the exterior facing side of the contactless earbud;

a first optical transmitter within a second optical window next to the first optical window, on the interior facing side of the contactless earbud, having an electrical input and an optical output, wherein the electrical input is coupled to the circuitry, the optical output is configured to be coupled to a second optical receiver on the exterior facing side of the contactless earbud and information is simultaneously received and transmitted over both optical transmitter/receiver communication paths.