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Optical data link

A technology of optical data and electrical data, applied in the direction of electrical digital data processing, coupling of optical waveguides, instruments, etc., can solve problems such as inconvenience

Active Publication Date: 2009-01-14
LUMENTUM OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Lee's optical fiber communication interface module only partially solves the above-mentioned problems, because using this communication interface to operate USB devices will still require two separate copper wires VCC and GND to supply power to remote devices, or require additional power at the device location, This is inconvenient or close to impossible in some applications

Method used

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Embodiment Construction

[0044] [37] FIG. 1 shows an optical data link (ODL) 5 between a host controller 10 and an external or peripheral device 50 of the present invention. Host controller 10, which may, for example, be embodied as a card in a computer, and device 10 preferably support one of a number of standard communication protocols, and preferably have a standard communication interface. The ODL 5 can operate the peripheral device 50 (hereinafter simply referred to as the device 50 ) by providing a communication channel between the device 50 and the main controller 10 and by remotely supplying the device with electric power required for its operation. By way of example, device 50 is shown as a video camera and has a USB port. In another embodiment, device 50 may be any device having the desired functionality, may be externally driven, and have a standard communication interface supporting one or more standard data communication protocols, including but not limited to such devices as USB, FireWir...

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Abstract

The invention provides an optically powered device interface module for operating an external device, and an optically powered data link comprising the same. In one embodiment the device interface module includes an optical interface for receiving optical power and data signals, an electrical USB interface for providing USB compliant electrical data signals and a 5V electrical power signal to an external USB device, a transducer coupled to a signal processor for converting the optical power and data signals into the 5V electrical power signal and the USB-compliant electrical data signals, and a power distribution circuit for providing electrical power obtained from the optical power signal to the device interface module circuitry. The transducer may be embodied using a single photovoltaic power converter for receiving the optical power and for receiving and transmitting optical data signals.

Description

[0001] Cross References to Related Applications [0002] [1] This application claims priority to US Patent Application No. 60 / 871,101, filed December 20, 2006, entitled "Optically Powered USB Link," which is hereby incorporated by reference. technical field [0003] [2] The present invention relates generally to computer systems and devices that communicate using a Universal Serial Bus (USB), and more particularly to an optical fiber USB link in which data and power are transmitted optically. Background technique [0004] [3] The recent rapid development of computer-controlled devices to perform a variety of tasks is due at least in part to the development of powerful and convenient communication interface standards such as various types of serial bus interfaces. Some of these have conveniently incorporated remote electronic power estimation into the communication function of the interface so that peripheral devices that do not require additional energy to operate can be pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/38G02B6/42H04B10/12
CPCH04B10/807G06F13/385
Inventor 简·古斯塔夫·威尔森吴塔春
Owner LUMENTUM OPERATIONS LLC
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