Pulsed Light Communication Key

• US 20160203101A1
• Filed: 03/21/2016
• Published: 07/14/2016
• Est. Priority Date: 05/24/2007
• Status: Active Grant

• Current Assignee: Federal Law Enforcement Development Services, Inc.
• Original Assignee: Federal Law Enforcement Development Services, Inc.
• Inventors: Pederson, John C.
• Granted Patent: US 9,577,760 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 13/102 where the programme performs an interfacing function, e.g. device driver G06F13/105 takes precedence; scheduling within device drivers G06F9/52; contention policies within device drivers G06F9/4881
• CPC Class Codes: G06F 13/4072 Drivers or receivers G06F13/4086 takes precedence; for multistate logic circuits H03K19/0002
• CPC Class Codes: G06F 13/4081 Live connection to bus, e.g. hot-plugging current or voltage limitation during live insertion H02H9/004
• CPC Class Codes: G06F 13/4282 on a serial bus, e.g. I2C bus, SPI bus on daisy chain buses G06F13/4247
• CPC Class Codes: H04B 10/1143 Bidirectional transmission
• CPC Class Codes: H04B 10/1149 Arrangements for indoor wireless networking of information
• CPC Class Codes: H04B 10/116 Visible light communication
• CPC Class Codes: H04B 10/40 Transceivers
• CPC Class Codes: H04B 10/802 for isolation, e.g. using optocouplers
• CPC Class Codes: H05B 47/195 the transmission using visible or infrared light

Abstract

A Universal Serial Bus (USB) key may include an optical transceiver having a USB interface for engagement to an electronic device such as a laptop computer or other USB-configured device. The USB key may include a converter or buffering, isolation, modulation or amplification circuitry. The USB key sends and receives data signals which may be carried upon an optical transmission as generated by an LED light source which in turn is in communication with a host device such as a network processor. The USB key may also include operational amplifiers (op-amps) and transistor amplifiers.

Claims

1. A light emitting diode (LED) light communication device comprising:

a portable housing comprising at least one optical transceiver comprising at least one LED and at least one photodetector, said housing further comprising a universal serial bus interface in communication with said at least one optical transceiver,

said universal serial bus interface being constructed and arranged for engagement to, and communication with a universal serial bus receiving port of an electronic device,

said optical transceiver being further constructed and arranged for transmission of at least one transmitted light signal and receipt of at least one received light signal, said at least one transmitted light signal and said at least one received light signal each comprising a plurality of rapid flashes of light, said rapid flashes of light having a frequency which is not observable to an individual, wherein said rapid flashes of light are configured for transmission of information or data, said at least one received light signal being embedded within illumination, said at least one received light signal comprising at least one destination location identifier,

wherein said communication device has a first state wherein said universal serial bus interface is unengaged to said universal serial bus receiving port and a second state wherein said universal serial bus interface is engaged to said universal serial bus receiving port, further wherein said at least one optical transceiver is constructed and arranged to establish an optical link for said at least one transmitted light signal and said at least one received light signal for said electronic device.

2. The LED light communication device of claim 1, said optical transceiver further comprising a converter.

3. The LED light communication device of claim 2, said optical transceiver further comprising buffering circuitry.

4. The LED light communication device of claim 3, said optical transceiver further comprising isolation circuitry.

5. The LED light communication device of claim 4, said optical transceiver further comprising modulation circuitry.

6. The LED light communication device of claim 4, said optical transceiver further comprising amplification circuitry.

7. The LED light communication device of claim 1, said at least one optical transceiver further comprising a lens assembly comprising at least one reflective member and at least one lens disposed adjacent to said at least one reflective member.

8. The LED light communication device of claim 1, said at least one optical transceiver further comprising a lens assembly comprising an upper lens, said upper lens comprising an opening.

14. The LED light communication device of claim 1, said information or data comprising global positioning system information.

15. The LED light communication device of claim 1, said information or data comprising at least one origin optical transceiver location identifier and at least one intermediate optical transceiver location identifier.

9. A light emitting diode (LED) light communication device comprising:

a housing comprising at least one optical transceiver comprising at least one LED and at least one photodetector, said housing further comprising a universal serial bus interface in communication with said at least one optical transceiver,

said universal serial bus interface being constructed and arranged for engagement to, and communication with a universal serial bus receiving port of an electronic device,

said optical transceiver being further constructed and arranged for transmission of at least one transmitted light signal and receipt of at least one received light signal, said at least one transmitted light signal and said at least one received light signal each comprising a plurality of rapid flashes of light said rapid flashes of light having a wavelength in the observable spectrum, said rapid flashes of light having a frequency which is not observable to an individual, wherein said rapid flashes of light are configured for transmission of information or data, said at least one received light signal comprising at least one destination location identifier,

wherein said communication device has a first state wherein said universal serial bus interface is unengaged to said universal serial bus receiving port and a second state wherein said universal serial bus interface is engaged to said universal serial bus receiving port, further wherein said at least one optical transceiver is constructed and arranged to establish an optical link for said electronic device.

10. The LED light communication device of claim 9, said information or data comprising global positioning system information.

11. The LED light communication device of claim 10, said information or data comprising at least one origin optical transceiver location identifier and at least one intermediate optical transceiver location identifier.

12. The LED light communication device of claim 9, said at least one optical transceiver further comprising a lens assembly comprising at least one reflective member wherein said at least one lens is disposed adjacent to said at least one reflective member.

13. The LED light communication device of claim 9, said at least one optical transceiver further comprising a lens assembly comprising an upper lens, said upper lens comprising an opening.