Patents Assigned to Circadiant Systems, Inc.
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Patent number: 7668233Abstract: In accordance with illustrative embodiments, methods and apparati, which determine jitter are described. In one example embodiment, a method includes receiving a signal, wherein the signal comprises a first data pattern which was generated at a first bit rate. The method also includes sampling the signal at a second bit rate to generate a second data pattern. The period of the second bit rate is different from the period of the first bit rate. The method also includes comparing the first data pattern and the second data pattern to determine differences between the first data pattern and the second data pattern. Furthermore, the method includes determining jitter in the signal according to the differences between the first data pattern and the data second data pattern. In other embodiments, by using two different bit rates to determine jitter, jitter can be determined in communication systems in a convenient and cost effective manner.Type: GrantFiled: July 28, 2004Date of Patent: February 23, 2010Assignee: Circadiant Systems, Inc.Inventors: Ernest Eisenhardt Bergmann, Jorge Eduardo Franke, John Sargent French, William Joseph Thompson
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Patent number: 7599618Abstract: A method of self-testing includes transmitting a plurality of self-test signals and receiving the plurality of self-test signals. In addition, the method includes storing the received self-test signal in a first database; and comparing the received self-test signal with data from a second database. An self-testing apparatus and a method of for assuring substantially continued calibrated function of a testing device.Type: GrantFiled: January 6, 2005Date of Patent: October 6, 2009Assignee: Circadiant Systems, Inc.Inventors: Ian Malcolm Adam, William Joseph Thompson, Darren Leonard Winslow
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Patent number: 7434116Abstract: A testing apparatus for testing optical components includes an optical transmitter, an optical attenuator, an optical power meter and an optical receiver which are substantially rigidly coupled in a fixed relation to each other within a single housing. The system permits the common control of all the optical components such that calibration, testing and troubleshooting may be performed using a common user interface. The testing apparatus is unitary, compact and portable, and is a much more robust testing apparatus than conventional schemes.Type: GrantFiled: October 8, 2002Date of Patent: October 7, 2008Assignee: Circadiant Systems, Inc.Inventors: Jorge Eduardo Franke, John Sargent French, Sheldon Louis Sun, William Joseph Thompson
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Patent number: 7298463Abstract: A system and method for bit error rate testing optical components comprises providing an optical testing unit, which measures a bit error rate of an optical device under test (DUT) over an operating range of the DUT. The optical testing unit includes an optical transmitter, which transmits an optical test signal that is transmitted to the DUT; an optical receiver, which receives an input signal from the DUT; a graphical user interface, which provides an interface with a user; and a controller, selectively coupled to the transmitter, the receiver and the graphical user interface, wherein the controller provides a central control of the transmitter, the receiver and the graphical user interface.Type: GrantFiled: July 3, 2003Date of Patent: November 20, 2007Assignee: Circadiant Systems, Inc.Inventors: John Sargent French, William Joseph Thompson
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Patent number: 7161666Abstract: A system and method for testing the sensitivity of optical components comprises providing an optical testing unit which measures the sensitivity of an optical device under test (DUT). The optical testing unit includes an optical transmitter, which transmits an optical test signal that is transmitted to the DUT; an optical receiver, which receives an input signal from the DUT; a graphical user interface, which provides an interface with a user; and a controller, selectively coupled to the transmitter, the receiver and the graphical user interface, wherein the controller provides a central control of the transmitter, the receiver and the graphical user interface.Type: GrantFiled: September 29, 2004Date of Patent: January 9, 2007Assignee: Circadiant Systems, Inc.Inventors: John Sargent French, William Joseph Thompson
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Patent number: 7133125Abstract: A system and method for testing the sensitivity of optical components comprises providing an optical testing unit which measures the sensitivity of an optical device under test (DUT). The optical testing unit includes an optical transmitter, which transmits an optical test signal that is transmitted to the DUT; an optical receiver, which receives an input signal from the DUT; a graphical user interface, which provides an interface with a user; and a controller, selectively coupled to the transmitter, the receiver and the graphical user interface, wherein the controller provides a central control of the transmitter, the receiver and the graphical user interface.Type: GrantFiled: July 2, 2003Date of Patent: November 7, 2006Assignee: Circadiant Systems, Inc.Inventors: John Sargent French, William Joseph Thompson
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Patent number: 7116410Abstract: A system and method for bit error rate testing optical components comprises providing an optical testing unit, which measures a bit error rate of an optical device under test (DUT) over an operating range of the DUT. The optical testing unit includes an optical transmitter, which transmits an optical test signal that is transmitted to the DUT; an optical receiver, which receives an input signal from the DUT; a graphical user interface, which provides an interface with a user; and a controller, selectively coupled to the transmitter, the receiver and the graphical user interface, wherein the controller provides a central control of the transmitter, the receiver and the graphical user interface.Type: GrantFiled: April 4, 2005Date of Patent: October 3, 2006Assignee: Circadiant Systems, Inc.Inventors: John Sargent French, William Joseph Thompson
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Patent number: 6751091Abstract: A modular housing device includes a modular housing having a first side and a second side, at least one component disposed with said modular housing. The modular housing device further includes a bracket disposed on the second side.Type: GrantFiled: September 6, 2002Date of Patent: June 15, 2004Assignee: Circadiant Systems, Inc.Inventors: Rajesh Dighde, William Joseph Thompson
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Patent number: D483725Type: GrantFiled: April 19, 2002Date of Patent: December 16, 2003Assignee: Circadiant Systems, Inc.Inventors: William Joseph Thompson, Rajesh Dighde, John Sargent French