Patents by Inventor Thomas I. Yeh

Thomas I. Yeh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9276515
    Abstract: A motor controller is provided with integrated metering and data logger functions to measure, store and report information suitable to verify the controller's energy saving performance. The integrated functions in the controller can be used to establish an AC motor's baseline electrical power and energy profile and to monitor continuously the power and energy reduction performance of the controller without requiring a separate meter and logger.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: March 1, 2016
    Inventor: Thomas I. Yeh
  • Publication number: 20150084547
    Abstract: The present invention provides for a system that: automatically detects new DALI ballasts that join a lighting network, automatically detects sensor inputs on devices that reside on a lighting network, automatically configures the DALI short addresses on a DALI devices on the lighting network to ensure each ballast and device is uniquely addressed, automatically sets configuration parameters on a newly detected DALI ballast or whenever the DALI controller or lighting network manager role globally adjusts ballast configuration, and masquerades non-DALI ballasts as a native DALI ballast such that they can be integrated into a DALI lighting system transparently.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 26, 2015
    Applicant: Verified Energy, LLC
    Inventors: Thomas I. Yeh, David W. Sheehan
  • Publication number: 20150061500
    Abstract: Disclosed is a means to implement wireless daylight control of light level for a group of lighting fixtures configured to operate in the same light zone, by measuring the amount of natural daylight available in the immediate areas using a photo sensor connected to a wireless control module and wirelessly transmitting the photo sensor output or a derived value based on the photo sensor output. The wireless control can be further supplemented with occupancy control, manual adjustments and automated computerized control of the lighting fixtures configured to operate in the same light zone.
    Type: Application
    Filed: August 4, 2014
    Publication date: March 5, 2015
    Applicant: VERIFIED ENERGY LLC
    Inventor: Thomas I. Yeh
  • Publication number: 20150048775
    Abstract: A motor controller is provided with integrated metering and data logger functions to measure, store and report information suitable to verify the controller's energy saving performance. The integrated functions in the controller can be used to establish an AC motor's baseline electrical power and energy profile and to monitor continuously the power and energy reduction performance of the controller without requiring a separate meter and logger.
    Type: Application
    Filed: August 15, 2014
    Publication date: February 19, 2015
    Inventor: Thomas I. Yeh
  • Publication number: 20140139140
    Abstract: An exemplary lighting control system and method to use the same in which the lighting system may incorporate wireless communications between a DALI controller and DALI controlled devices while maintaining adherence to DALI protocol. The system comprises a DALI protocol based controller (master) connected via a first two wire data bus (e.g. a twisted pair wire) to a controller-side wireless module. The controller-side wireless module communicates via a wireless communication protocol (e.g. Wi-Fi, Zigbee) to at least one device-side wireless module. Each device-side wireless module is connected to a DALI stream via a second two wire data bus to at least one DALI ballast (slave) which is connected to at least one lamp bank. Additional devices may be connected to the DALI stream.
    Type: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Applicant: VERIFIED ENERGY, LLC
    Inventors: Thomas I. Yeh, David W. Sheehan
  • Publication number: 20130264971
    Abstract: Methods of supporting DALI protocol between DALI controllers and devices over an intermediate communication protocol are disclosed. We will describe an implementation of the invention using the mesh wireless network prescribed by IEEE 802.15.4 as an intermediate protocol where it's long latency and highly variable delay characteristics poses a significant challenge to maintain adherence with the DALI specification. For practitioners skilled in the art it is obvious that the invention is also applicable to many other communication mediums and protocols, including wired networking such as Ethernet and Wifi networking such as IEEE 802.11 a/b/g/n. Additionally, the invention is applicable to transport other control protocols where specification limits the duration between forward messages and associated reverse replies.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 10, 2013
    Applicant: VERIFIED ENERGY, LLC
    Inventors: Thomas I. Yeh, David W. Sheehan
  • Patent number: 7346405
    Abstract: An interface for connecting one of a plurality of industrial machines having different data format and storage configurations to a communications medium for remote monitoring and control, includes a programmable apparatus having a memory for storing data in predetermined locations and in a predetermined format, and for storing configuration information relating to the at least one of the machines; a configurable electrical interface responsive to the configuration information for receiving machine data from the machine and sending data to the machine; a data translator responsive to the configuration information, receiving data from the interface and transforming the data to the predetermined format; a processor responsive to the configuration information for reading data from and writing data to the predetermined locations in the memory; and a communications port connected to the communications medium.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: March 18, 2008
    Assignee: Connected Energy Corp.
    Inventors: Thomas I. Yeh, Kevin R. Hann, Timothy J. Spires, Mark D. Goodlein, Sam Wang
  • Publication number: 20030109942
    Abstract: An interface for connecting one of a plurality of industrial machines having different data format and storage configurations to a communications medium for remote monitoring and control, includes a programmable apparatus having a memory for storing data in predetermined locations and in a predetermined format, and for storing configuration information relating to the at least one of the machines; a configurable electrical interface responsive to the configuration information for receiving machine data from the machine and sending data to the machine; a data translator responsive to the configuration information, receiving data from the interface and transforming the data to the predetermined format; a processor responsive to the configuration information for reading data from and writing data to the predetermined locations in the memory; and a communications port connected to the communications medium.
    Type: Application
    Filed: December 4, 2001
    Publication date: June 12, 2003
    Inventors: Thomas I. Yeh, Kevin R. Hann, Timothy J. Spires, Mark D. Goodlein, Sam Wang
  • Patent number: 6198845
    Abstract: The background grey-level of a document is determined based on the gain of the document. A histogram is generated and compressed. The standard deviation of the distribution curve of the compressed histogram is determined. A gain factor is determined using the mean and standard deviation. Using the background grey-level, the dynamic range of the document is adjusted.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: March 6, 2001
    Assignee: Xerox Corporation
    Inventors: Francis K. Tse, Barbara L. Farrell, Ramesh Nagarajan, Andre M. Blaakman, Richard S. Fox, George W. Lahue, Thomas I. Yeh
  • Patent number: 5742708
    Abstract: A system and process prints a high resolution image on a high addressable image output terminal by converting an image at one resolution to an image having a lower resolution in a fast-scan direction and a higher resolution in a pixel depth direction. The converted image is then processed and binarized prior to being printed on a high addressable printer. The system or process utilizes a conversion circuit which includes a two-bit per pixel packing circuit, a scanline buffer circuit, a logic circuit, and a look-up table. The conversion circuit initially converts the image into an image having a lower resolution in the fast-scan direction and a higher pixel depth resolution. Thereafter, the image is further converted to an image having a lower resolution in the slow-scan direction and a higher pixel depth resolution. This conversion of a high resolution image to a lower resolution is carried without any substantial lost to the image content data.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: April 21, 1998
    Assignee: Xerox Corporation
    Inventors: Thomas I. Yeh, Francis K. Tse, George W. Lahue
  • Patent number: 5706409
    Abstract: There is provided an image data shifting system for a document processing system including a scanning device for reading a document including one or more hardcopy pages and converting the hardcopy pages to corresponding electronic pages with each electronic page being represented by image data. Each hardcopy page is scanned as a series of scanlines and the scanner generates a signal prior to scanning each scanline. Each scanline read by the scanner is stored in memory as image data representative of one of the electronic pages. The image shifting system includes a detector for detecting a first signal generated by the scanner and a second signal generated by the scanner.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: January 6, 1998
    Assignee: Xerox Corporation
    Inventors: Thomas I. Yeh, Peter T. Palamar
  • Patent number: 5659634
    Abstract: An apparatus for processing an input image, represented by an input bit stream including a plurality of first bit sets, is provided. The apparatus includes a device for processing the input bit stream in such a manner that each of the first bit sets is represented by a second bit set with each of the second bit sets having less bits than each of the first bit sets and a selected number of bits in the input bit stream, corresponding to image-related information, being discarded as a result of the encoding. The apparatus is provided with an electronic volatile memory for storing a resulting encoded bit stream and a bit stream analyzer for analyzing the stored encoded bit stream to generate positional signals. The apparatus is further provided with a reconstruction circuit for reconstructing the stored encoded bit stream, by reference to the positional signals.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: August 19, 1997
    Assignee: Xerox Corporation
    Inventors: Thomas I. Yeh, Francis K. Tse, Anthony M. Frumusa, Aron Nacman, Kenneth D. Romano
  • Patent number: 5528387
    Abstract: A system electronically registers an image on an input document. The system includes a scanner for generating an image data stream representing an electronic image of the image on the input document and an edge detecting circuit for detecting edge data within the image data stream. A circuit calculates a skew angle of the input document based on the detected edge data and rotates the electronic image based on the calculated skew angle to register the electronic image with an output medium. The system also includes a non-image area generating circuit for generating areas in the electronic image which correspond to non-image areas based on the calculated skew and detected edge data. The skew calculation, rotation operation and the non-image area generation is based the electronic detection of the corners and center of the leading edge of the document being scanned.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: June 18, 1996
    Assignee: Xerox Corporation
    Inventors: Nancy R. Kelly, Thomas I. Yeh
  • Patent number: 5509108
    Abstract: There is provided a control apparatus for a printing machine located in a building with a portion of the building being characterized by an environmental state. The printing machine includes a print machine component, while the control apparatus includes a communication line, operatively coupled with the printing machine, across which signals are transmitted. A sensing arrangement, communicating with the communication line, transmits a signal, representative of the environmental state of the building portion, across the communication line. An interface receives and converts the signal to a control signal, the control signal being used to control the print machine component.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: April 16, 1996
    Assignee: Xerox Corporation
    Inventor: Thomas I. Yeh
  • Patent number: 5398181
    Abstract: A system controls a transformer having a primary coil. A pulse is applied to an inverter associated with the primary coil, whereby a leading edge of the pulse creates in the primary coil a tank circuit current of an initial polarity in a tank circuit inherent to the transformer. The tank circuit is seen from an effective inductance in series with the primary coil, the effective inductance including a leakage inductance of the primary coil, and an effective capacitance in parallel with the primary coil, the effective capacitance including a parasitic capacitance of the transformer. A trailing edge of the pulse occurs when the tank circuit current is different from the initial polarity.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: March 14, 1995
    Assignee: Xerox Corporation
    Inventor: Thomas I. Yeh
  • Patent number: 5361123
    Abstract: A charging device for producing a voltage potential on a photoconductive member including a corona generator for charging a portion of the image receptor to a substantially uniform potential; a corona generating potential source electrically connected to the corona generator; a sensor for determining the potential on the image receptor; and a microprocessor including an analog to digital converter interconnected to the corona generating potential source; the sensor; and the controller for regulation of the potential on the image receptor.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: November 1, 1994
    Assignee: Xerox Corporation
    Inventors: Thomas I. Yeh, Clifford K. Friend, Timothy A. Cole, Leo R. Farnand