Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
1998-03-25
2001-09-11
Pascal, Leslie (Department: 2633)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S199200, C359S199200, C359S199200
Reexamination Certificate
active
06288813
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is generally related to an apparatus and method for effecting data transfer between data systems.
2. Problem to be Solved
It is often desirable to transmit digital data between electronic data systems Typically, cables are used for this purpose. However, relatively long distances between electronic data systems often causing delay, attenuation, skewing and distortion of the data signals. Data signals that are delayed, time skewed or distorted can cause degradation in system performance.
One example of the necessity for the transmission of high speed digital data signals between systems located in different locations is the recordation of data pertaining to rocket engine tests. However, due to the relatively large distance separating the data acquisition system, typically comprising probes and/or other types of monitors located in proximity to the rocket engine, and a data analysis and storage system, typically located at a safe, remote location, transmission and reception of quality, high speed digital data signals is not possible.
Any high speed digital signals transmitted over cables linking the data signal acquisition system and the data signal analysis system are subject to time delay, attenuation, skewing, and distortion.
One attempt at solving the aforementioned problem is to provide a system for recording rocket engine test data that is located in relatively close proximity to the rocket engine under test. However, such a set-up creates a substantial risk that the data recording equipment could be destroyed if the rocket engine misfires or explodes. Furthermore, the proximity of the recording system to the rocket engine creates a substantial risk of injury to test and engineering personnel that must retrieve, maintain or repair the recording equipment.
Another attempt at solving the aforementioned problem is to record rocket test data in analog format at a remote location. This set-up uses test probes and/or other types of monitors located in close proximity to the rocket under test, a data recording system located at a remote location, and an amplifier and twisted cable pair for every channel of high speed data. Such a configuration is expensive due to the plurality of amplifiers needed. Furthermore, long runs of the twisted cable can introduce noise into the data signals thereby degrading the quality of the frequency and amplitude components of the data signals. Additionally, the analog data signals must be digitized post-test thereby significantly increasing the data processing time and the test turn-around time.
What is needed is a system and method for effecting transfer of quality data signals between data systems that are at different locations.
It is therefore an object of the present invention to provide a new and improved apparatus and method for transferring data between data systems separated by a relatively large distance.
It is another object of the present invention to provide a new and improved apparatus and method for transferring data between data systems separated by a relatively large distance and wherein the data is in digital format before and after transfer of the data.
It is a further object of the present invention to provide a new and improved apparatus and method for transferring data with a relatively high degree of accuracy between data systems separated by a relatively large distance.
It is yet another object of the present invention to provide a new and improved apparatus and method for transferring data between data systems separated by a relatively large distance that may be implemented cost effectively.
Still other objects and advantages of the present invention will in part be obvious and will in part be apparent from the specification.
SUMMARY OF THE INVENTION
The above and other objects and advantages, which will be apparent to one of skill in the art, are achieved in the present invention which is directed to an apparatus for effecting data transfer between data systems comprising a first transceiver and a second transceiver. The first transceiver has an input for receiving digital data from one of the data systems, an output for serially outputting digital data to the one of the data systems, at least one transmitter for converting digital data received at the input into optical signals, and at least one receiver for receiving optical signals and converting the received optical signals to digital data for output to the first transceiver output. The second transceiver has an input for receiving digital data from another one of the data systems, an output for serially outputting digital data to the another one of the data systems, at least one transmitter for serially converting digital data received at the input of the second transceiver into optical signals, and at least one receiver for serially receiving optical signals and converting the received optical signals to digital data for output to the data output of the second transceiver. The apparatus further comprises an optical link connecting the first and second transceivers. The optical link comprises a pair of optical fibers. One of the optical fibers optically links the transmitter of the first transceiver to the receiver of the second transceiver. The other optical fiber optically links the receiver of the first transceiver to the transmitter of the second transceiver.
REFERENCES:
patent: 4527270 (1985-07-01), Sweeton
patent: 4996683 (1991-02-01), Yamashita et al.
patent: 5039194 (1991-08-01), Block et al.
patent: 5093843 (1992-03-01), Hirosaki et al.
patent: 5099349 (1992-03-01), Yoshida et al.
patent: 5226431 (1993-07-01), Bible et al.
patent: 5272558 (1993-12-01), Canestri et al.
patent: 5327275 (1994-07-01), Yamane et al.
patent: 5343319 (1994-08-01), Moore
patent: 5432874 (1995-07-01), Muraguchi
patent: 5448390 (1995-09-01), Tsuchiya et al.
patent: 5448661 (1995-09-01), Takai et al.
patent: 5455703 (1995-10-01), Duncan et al.
patent: 5528409 (1996-06-01), Cucci et al.
patent: 5568576 (1996-10-01), Takai et al.
patent: 5579336 (1996-11-01), Fitzgerald et al.
patent: 5777761 (1998-07-01), Fee
patent: 5790286 (1998-08-01), Bae
patent: 5926303 (1999-07-01), Giebel et al.
patent: 5949563 (1999-09-01), Takada et al.
patent: 5956168 (1999-09-01), Levinson et al.
patent: 6025945 (2000-02-01), Nyu et al.
patent: 6141128 (2000-10-01), Korevaar et al.
Grosz, Jr. Francis B.
Kirkpatrick Joey V.
Lannes Kenny
Maniscalco David G.
Cox Diana M.
Pascal Leslie
Phan Hanh
The United States of America as represented by the Administrator
Vrioni Beth A.
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