Wireless infrared peripheral interface for a communication device

• US 6,577,877 B1
• Filed: 02/23/2000
• Issued: 06/10/2003
• Est. Priority Date: 02/23/2000
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Alameh, Rachid M., Schellinger, Michael W., Smith, Hugh K., Gitzinger, Thomas E. Jr., Stoll, Thomas G., Schirtzinger, Thomas R., Charlier, Michael L.
• Primary Examiner(s): Le, Thanh Cong
• Assistant Examiner(s): Corsaro, Nick
• Application Number:
  US09/510,799
• Time in Patent Office: 1,203 Days
• Field of Search: 455/151.2, 455/557, 455/41, 455/552, 455/556, 455/569, 455/66, 359/145, 359/127, 359/129, 359/159
• US Class Current: 455/557
• CPC Class Codes: H04B 10/114 Indoor or close-range type systems

Abstract

A wireless infrared peripheral interface for a communication device having a cellular radio transceiver includes a peripheral interface. The peripheral interface includes at least one infrared signal source and at least one infrared detector. The signal source and detector are coupled with dispersing optics. An interface circuit is coupled to the infrared signal source and detector. A processor is coupled to the interface circuit, wherein the processor controls the interface circuit to process data signals that are conveyed through the infrared source and detector so as to communicate with a peripheral device that is proximate to the communication device. The dispersing optics reduces the dependency of optical alignment between the infrared data ports of the peripheral device and communication device.

Claims

1. A wireless infrared peripheral interface for a communication device having a cellular radio transceiver, the peripheral interface comprising:

at least one infrared signal source and at least one infrared detector, the signal source and detector coupled with dispersing optics, the dispersing optics include a fiber optic cable disposed around a portion of a periphery of the communication device so as to transmit and receive infrared signals substantially omnidirectionally around the communication device;

an interface circuit coupled to the infrared signal source and detector;

a processor coupled to the interface circuit, wherein the processor controls the interface circuit to process data signals that are conveyed through the infrared source and detector so as to communicate with a peripheral device that is proximate to the communication device.

2. The peripheral interface of claim 1, wherein the dispersing optics include a plurality of lenses configured to transmit and receive infrared signals over an extended angular range.

3. The peripheral interface of claim 1, wherein the fiber optic cable is notched at intervals along its length so as to admit and transmit light at varying angles therefrom.

4. The peripheral interface of claim 1, wherein the communication device is a wrist-worn cellular telephone having a wristband, and the fiber optic cable is disposed around a periphery of the wristband.

5. The peripheral interface of claim 1, further including a fiber optic link for collecting and transmitting light between the communication device and a peripheral device, the fiber optic link having two ends to be located in proximity to the peripheral interface and an infrared port of the peripheral device respectively, and wherein the dispersive optics are adapted to focus light onto the ends of the fiber optic link.

6. The peripheral interface of claim 1, wherein the communication device is a wrist-worn cellular telephone, and wherein the processor is further adapted to convey RF data signals associated with the infrared data signals through the cellular radio transceiver.

7. The peripheral interface of claim 1, wherein the communication device is a wrist-worn cellular telephone, and wherein the processor is adapted to display information to-a user via a display in accordance with at least some of the infrared data signals conveyed through the peripheral interface.

8. A wireless infrared peripheral interface for a communication device having a cellular radio transceiver, the peripheral interface comprising:

an infrared signal source and an infrared detector, the signal source and detector coupled with dispersing optics, the dispersive optics include a beam-splitter and two sets of lenses, the beam splitter splitting and combining optical signals through a fiber optic cable between the two lenses and the infrared signal source and detector, the lenses oriented to provide viewing coverage about 180 degrees from each other;

an interface circuit coupled to the infrared signal source and detector;

a processor coupled to the interface circuit, wherein the processor controls the interface circuit to process data signals that are conveyed through the infrared source and detector so as to communicate with a peripheral device that is proximate to the communication device.

9. The peripheral interface of claim 8, further including a fiber optic link for collecting and transmitting light between the communication device and a peripheral device, the fiber optic link having two ends to be located in proximity to the peripheral interface and an infrared port of the peripheral device respectively, and wherein the dispersive optics are adapted to focus light onto the ends of the fiber optic link.

10. The peripheral interface of claim 8, wherein the communication device is a wrist-worn cellular telephone, and wherein the processor is further adapted to convey RF data signals associated with the infrared data signals through the cellular radio transceiver.

11. The interface of claim 8, wherein the processor is adapted to display information to a user via a display in accordance with at least some of the infrared data signals conveyed through the peripheral interface.

12. A wireless infrared peripheral interface for a communication device having a wrist-worn cellular radio transceiver, the peripheral interface comprising:

an infrared signal source and an infrared detector, the signal source and detector coupled with dispersing optics, the dispersive optics include a beam-splitter and two sets of lenses, the beam splitter splitting and combining optical signals through a fiber optic cable between the two lenses and the infrared signal source and detector, one lens is located on a clasp of the wrist-worn cellular radio and another lens is located near a bezel of the wrist-worn cellular radio such that the lenses are oriented to provide viewing coverage about 180 degrees from each other;

an interface circuit coupled to the infrared signal source and detector;

a processor coupled to the interface circuit, wherein the processor controls the interface circuit to process data signals that are conveyed through the infrared source and detector so as to communicate with a peripheral device that is proximate to the communication device.