Synchronization and processing of secure information via optically transmitted data

• US 7,917,034 B2
• Filed: 04/13/2007
• Issued: 03/29/2011
• Est. Priority Date: 04/13/2007
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility, Inc. (Lenovo Group Ltd.)
• Inventors: St. Peter, John R., Yu, Huinan, Tungare, Aroon V.
• Primary Examiner(s): SEDIGHIAN, REZA
• Application Number:
  US11/735,197
• Publication Number:
  US 20080253766A1
• Time in Patent Office: 1,446 Days
• Field of Search: 398/128, 398/130, 398/127, 398/118, 398/135, 398/138, 398/140, 398/151, 398/106, 398/107, 398/108, 398/109, 398/111, 398/41, 398/164, 398/115
• US Class Current: 398/115
• CPC Class Codes: H04B 10/1143 Bidirectional transmission
• CPC Class Codes: H04B 10/116 Visible light communication

Abstract

A method and device enables data communication via optical pulses from a light source of an electronic device. A data transfer interface is provided to support processing of selected data by a processor of the electronic device. The electronic device comprises an illumination light source, which is selectively utilized for illuminating a component in the electronic device and for transmitting data via optical pulses. An optical receiver also receives optically transmitted data. The transmission and receiving of the data is provided on a bidirectional duplex communication link created with a second optical receiver and an optical data transmission mechanism of a second electronic device.

Claims

1. A method of wireless data communication via an electronic device, said method comprising:

providing a data transfer interface on the electronic device, wherein the data transfer interface supports processing of selected data by a processor of the electronic device that is functionally connected to an illumination light source, which light source generates visible light that is utilized for illuminating a separate component in the electronic device and which light source is also selectively utilized for transmitting data via optical pulses while the illumination light source is in a data communication mode; and

switching the illumination light source from an illumination mode to the data communication mode; and

transmitting a data stream from the electronic device by encoding the data in optical pulses from said illumination light source while the illumination light source is in the data communication mode;

wherein the illumination light source is one type of light source from among different types of light sources comprising (a) a display light source for illuminating a display of the electronic device, (b) a keypad light source, which illuminates a keypad of the portable electronic device when the keypad light source is utilized for illumination, and (c) a self-illuminating, emissive type display of the electronic device;

receiving, via an optical receiver, a second data stream encoded in optical pulses, wherein the optical receiver is functionally connected to the processor;

extracting the second data stream from the optical pulses and enabling processing of the data stream by the processor;

wherein the electronic device is a first electronic device having the illumination light source and the optical receiver and wherein said transmitting of the data stream and receiving of the second data stream is provided on a bidirectional duplex communication link created with a second optical receiver and an optical data transmission mechanism of a second electronic device, wherein;

the first data stream is transmitted via the optical pulses from the first electronic device and is received by the second optical receiver of the second electronic device; and

the second data stream is transmitted from the second electronic device and is received by the first optical receiver of the first electronic device;

wherein said first electronic device is a portable electronic device;

transmitting said data stream via the optical pulses activates initiation of preset functions, including one or more of;

initiating and establishing the communication link;

requesting a retransmission of at least a portion of the data transmitted via the communication link when an error in transmission is detected in the received data stream; and

confirming the completion of data transmission.

2. The method of claim 1, wherein data transmitted via the illumination light source of said first electronic device is transmitted to an optical receiver of a second device within an optical range of the illumination light source of the first electronic device.

3. The method of claim 2, wherein:

said first electronic device is a portable electronic device and said data stream includes an unlocking code for an electronic locking mechanism; and

said second device is the electronic locking mechanism, which unlocks when a preset unlocking code is received as data encoded within optical pulses of light from an illuminating source of a device that is within an optical range of the second device;

wherein said electronic locking mechanism unlocks only when the data received via the optical pulse is the preset unlocking code.

4. The method of claim 2, wherein:

said data stream is payment information for providing electronic payment; and

said second device is an electronic transaction mechanism, which accepts payment information as data encoded within an optical pulse received from an illuminating source of a device that is within an optical range of the second device;

wherein said payment information is one of a credit card number, a financial institution routing number with account number, a debit card number, personal identification information including addressing information for forwarding a request for payment, and reference information for a pre-charged credit account that is automatically debited.

5. The method of claim 1, wherein said receiving the data stream comprises receiving a data stream transmitted from a second device via optical pulses of an illumination light source of the second device.

6. The method of claim 1, wherein the type of illumination light source comprises one of:

(a) a backlight of an electronic display;

(b) a front light of an electronic display;

(c) a backlight of an electronic keyboard;

(d) a front light of an electronic keyboard; and

(e) a self illuminating display.

7. The method of claim 1, wherein the optical receiver comprises one or more of (a) a photodiode, (b) a phototransistor and (c) an Avalanche Photo-Diode (APD).

8. The method of claim 1, wherein:

said portable electronic device is a device from among (a) a cell phone (b) a PDA, (c) a personal multimedia player (PMP) and (d) a MP3 player;

said second device includes at least one of a built in optical transceiver and a separate optical transceiver; and

said method comprises enabling sharing of portions of data contained within the first device and the second device by contemporaneously transmitting data encoded within optical pulses between the first portable electronic device and the transceiver of the second.

9. The method of claim 1, wherein:

the electronic device comprises a power management circuit operatively connected to the data processor and to an illumination light source, wherein the power management circuit selectively drives the light source with power levels optimized for illumination and with power level modulation indicative of a response data generated from the data processor; and

when the data received is a request for activation of a duplex communication link, said method further comprises;

generating a response data from a processor of the first device;

initiating a communication interface on the processor for data transmission;

switching the light source of the first device from an illumination mode to a communication mode,

modulating a light source to produce modulated optical signals indicative of the response data generated from the processor; and

dynamically activating a first power level optimized for completing the modulating of the light source, wherein said response data is transmitted from the first device as the modulated optical signals, which provides optically transmitted data modulated within a light emitted from the light source.

10. The method of claim 1, wherein:

the received optical pulses comprises multiple streams of optically transmitted data, each stream being transmitted at a different wavelength of light;

the optical receiver comprises multiple sub-optical receivers optimized to receive different primary wavelengths of light; and

said method comprises;

detecting the multiple streams within the received optical pulses;

separating the multiple streams of data into individual streams of data;

converting the individual streams of data into received data;

analyzing each individual stream of data separately; and

responding to the received data within each individual stream according to corresponding preset responses for received data at a particular wavelength.

11. The method of claim 1, wherein:

said second device is a digital video recorder (DVR), wherein the digital video recorder has an associated optical transceiver; and

said method comprises transmitting content data via the optical pulses, wherein said content data is transmitted between the first device and the second device to enable digital content to be shared and viewed on the first device or on a video monitor associated with the second device.

12. A method of wireless data communication via an electronic device, said method comprising:

providing a data transfer interface on the electronic device, wherein the data transfer interface supports processing of selected data by a processor of the electronic device that is functionally connected to an illumination light source, which light source is selectively utilized for illuminating a component in the electronic device and for transmitting data via optical pulses;

switching the illumination light source from an illumination mode to a data communication mode;

transmitting from the electronic device via optical pulses, a request for authentication data from a second device to authenticate the second device;

comparing authentication data received in response to said request against a pre-established authentication parameter required for establishing an optical communication link, wherein the authentication data is one or more of (a) a password (b) a biometric sensor input and (c) an electronic token;

enabling transmission of content data from the electronic device to the second device following authentication, wherein content data is only transmitted after authentication of at least the second device; and

transmitting a data stream from the electronic device by encoding the data in optical pulses from said illumination light source.

13. A method of wireless data communication via an electronic device, said method comprising:

providing a data transfer interface on the electronic device, wherein the data transfer interface supports processing of selected data by a processor of the electronic device that is functionally connected to an illumination light source, which light source is selectively utilized for illuminating a component in the electronic device and for transmitting data via optical pulses;

switching the illumination light source from an illumination mode to a data communication mode;

requesting entry of an authentication data in the electronic device prior to enabling the electronic device to transmit data to a second device;

comparing the authentication data, provided in response to said requesting, against a pre-established authentication parameter required for the electronic device to transmit data to the second device, wherein the authentication data is one or more of (a) a password, (b) a biometric sensor input and (c) an electronic token; and

enabling transmission of data from the electronic device to the second device following authentication, wherein data is only transmitted after authentication of at least the electronic device; and

transmitting a data stream from the electronic device by encoding the data in optical pulses from said illumination light source.

14. A method of wireless data communication via an electronic device, said method comprising:

providing a data transfer interface on the electronic device, wherein the data transfer interface supports processing of selected data by a processor of the electronic device that is functionally connected to an illumination light source, which light source is selectively utilized for illuminating a component in the electronic device and for transmitting data via optical pulses;

receiving, at the electronic device via optical pulses, a request for authentication data from a second device to authenticate the electronic device;

switching the illumination light source from an illumination mode to a data communication mode;

transmitting authentication data from the electronic device to the second device by encoding the authentication data in optical pulses from the illumination light source;

comparing authentication data received from said second device in response to said request against a pre-established authentication parameter required for establishing an optical communication link with the second device, wherein the authentication data is one or more of (a) a password, (b) a biometric sensor input, and (c) an electronic token; and

enabling transmission of content data from the electronic device to the second device following authentication, wherein content data is only transmitted after authentication of at least the electronic device; and

transmitting a data stream of the content data from the electronic device by encoding the content data in optical pulses from said illumination light source.

15. An optical data communication system comprising:

a first electronic device having;

a data processor for generating data for communication with an external device;

an illumination light source which generates visible light for illuminating a component of the first electronic device and which is also selectively utilized for transmitting data via optical pulses, while the illumination light source is in a data communication mode; and

data transmission logic for;

providing a data transfer interface on the electronic device, wherein the data transfer interface supports processing of selected data by the processor;

switching the illumination light source from an illumination mode to the data communication mode; and

transmitting a data stream from the electronic device by encoding the data in optical pulses from said illumination light source, while the illumination light source is in the data communication mode; and

wherein the illumination light source is one type of light source from among different types of light sources comprising (a) a display light source for illuminating a display of the electronic device, (b) a keypad light source, which illuminates a keypad of the portable electronic device when the keypad light source is utilized for illumination, and (c) a self-illuminating, emissive type display of the electronic device;

wherein the first electronic device further comprises;

an optical receiver operatively connected to the processor, and operable as a receiver within an optical communication data link, wherein the optical receiver receives a light input having data embedded therein as optically-transmitted data and logic for receiving, via the optical receiver, a second data encoded within a light input;

logic that, in response to receiving the light input with data encoded therein, performs the functions of;

extracting the second data from the light input; and

enabling processing of the data by the processor;

a second electronic device, wherein said transmitting of the data and receiving of the second data is provided on a bidirectional duplex communication link created with a second optical receiver and an optical data transmission mechanism of the second electronic device, wherein;

the first data is transmitted via the optical pulses from the first electronic device and is received by the second optical receiver of the second electronic device; and

the second data is transmitted from the second electronic device and is received by the first optical receiver of the first electronic device; and

wherein said first electronic device further comprises logic for;

transmitting, via the optical pulses over the communication link, a request for authentication data from a second device to authenticate the second device;

comparing authentication data received in response to said request against a pre-established authentication parameter required for establishing the optical communication link, wherein the authentication data is one or more of (a) a password (b) a biometric sensor input and (c) an electronic token; and

enabling transmission of content data from the first device to the second device following authentication, wherein content data is only transmitted after authentication of at least the second device.

16. The optical data communication system of claim 15, wherein the type of illumination light source comprises one of:

(a) a backlight of an electronic display;

(b) a front light of an electronic display;

(c) a backlight of an electronic keyboard;

(d) a front light of an electronic keyboard; and

(e) a self illuminating display.

17. The optical data communication system of claim 15, wherein:

said first device is a portable electronic device;

said the second device is a second electronic device; and

transmitting said data stream via the optical pulses activates one or more preset functions, including one or more of;

initiating and establishing the communication link;

requesting a retransmission of at least a portion of the data transmitted via the communication link when an error in transmission is detected in the received data stream; and

confirming the completion of data transmission.

18. The optical data communication system of claim 15, wherein the first electronic device further comprises logic for:

requesting entry of authentication data in the first device prior to enabling the first device to transmit data to a second device;

comparing the authentication data, provided in response to said requesting, against a pre-established authentication parameter required for the first device to transmit data to the second device, wherein the authentication data is one or more of (a) a password, (b) a biometric sensor input and (c) an electronic token; and

enabling transmission of data from the first device to the second device following authentication, wherein data is only transmitted after authentication of at least the first electronic device.

19. The optical data communication system of claim 15, wherein:

said first device further comprises logic for;

receiving from a second device via the optical pulses, a request for authentication data to authenticate the first device; and

transmitting the authentication data to the second device in response to said request; and

said second device comprises logic for;

comparing authentication data received in response to said request against a pre-established authentication parameter required for establishing an optical communication link with the first device, wherein the authentication data is one or more of (a) a password, (b) a biometric sensor input, and (c) an electronic token; and

enabling transmission of content data from the first device to the second device following authentication, wherein content data is only transmitted after authentication of at least the first device.

20. The optical data communication system of claim 15, wherein:

said first electronic device is a portable electronic device and said data includes an unlocking code for an electronic locking mechanism;

said second device is the electronic locking mechanism, which unlocks when a preset unlocking code is received as data encoded within optical pulses of light; and

said electronic locking mechanism unlocks only when the data received via the optical pulse is the preset unlocking code.

21. The optical data communication system of claim 15, wherein:

said first device is a portable electronic device, and said data is payment information for providing electronic payment;

said second device is an electronic transaction mechanism, which accepts payment information as data encoded within an optical pulse received from an illuminating source of a device that is within an optical range of the second device; and

wherein said payment information is one of a credit card number, a financial institution routing number with account number, a debit card number, personal identification information including addressing information for forwarding a request for payment, and reference information for a pre-charged credit account that is automatically debited.

22. The optical data communication system of claim 15, wherein:

said first device is a portable electronic device, from among (a) a cell phone (b) a PDA, (c) a personal multimedia player (PMP) and (d) a MP3 player;

said second device includes at least one of a built in optical transceiver and a separate optical transceiver; and

said first device comprises logic for enabling sharing of portions of data contained within the first device and the second device by contemporaneously transmitting data encoded within optical pulses between the first portable electronic device and the transceiver of the second device.

23. The optical data communication system of claim 15, wherein:

said first device is a portable electronic device;

said second device is a television (TV), wherein the TV has an associated optical transceiver; and

said first device comprises logic for transmitting content data via the optical pulses, wherein said content data is transmitted between the first device and the second device to enable digital content to be shared and viewed on the first device or on a video monitor associated with the second device.

24. The optical data communication system of claim 15, wherein:

the first electronic device comprises a power management circuit operatively connected to the data processor and to an illumination light source, wherein the power management circuit selectively drives the light source with power levels optimized for illumination and with power level modulation indicative of a response data generated from the data processor; and

when the data received is a request for activation of a duplex communication link, said logic further comprises logic for;

generating a response data from a processor of the first device;

initiating a communication interface on the processor for data transmission;

switching the light source of the first device from an illumination mode to a communication mode;

modulating a light source to produce modulated optical signals indicative of the response data generated from the processor; and

dynamically activating a first power level optimized for completing the modulating of the light source, wherein said response data is transmitted from the first device as the modulated optical signals, which provides optically transmitted data modulated within a light emitted from the light source.

25. The device of claim 15, wherein the optical receiver comprises one or more of (a) a photodiode, (b) a phototransistor and (c) an Avalanche Photo-Diode (APD).

26. The device of claim 15, wherein said optical receiver is a component of an optical transceiver that is separate from the first electronic device and is communicatively tethered to the first electronic device.