Patents Assigned to RGB Systems, Inc.
  • Patent number: 11005427
    Abstract: Aspects disclosed herein eliminate audible disturbances that may occur when an audio amplifier is activated and deactivated. A feedback circuit is used to maintain a closed loop when transistors of a power output stage are activate or deactivated, thereby enabling the charge to build or dissipate without causing an audible disturbance. Further, in certain implementations, the power output stage may remain in an enable state for a period of time after deactivation of the audio amplifier regardless of whether an audio input signal is received enabling dissipation of charge without causing an audible disturbance.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: May 11, 2021
    Assignee: RGB Systems, Inc.
    Inventors: Eric Mendenhall, Robert Cesar Muniz
  • Patent number: 10658997
    Abstract: A voltage controlled amplifier with an amplitude limiting circuit, such as a clip limiter, that is separate from the signal path on which the input signal is received by a power amplifier can reduce both noise and power expenditure of the voltage controlled amplifier. The amplitude limiting circuit can include a transistor network that is controlled by a pair of utility operational amplifiers. These utility amplifiers may use less current than the audio amplifier of the voltage controlled amplifier. Further, the transistor network can be deactivated when a signal supplied to the voltage controlled amplifier is below a clipping or other voltage limiting threshold.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: May 19, 2020
    Assignee: RGB Systems, Inc.
    Inventor: Eric Mendenhall
  • Patent number: 10244263
    Abstract: Methods of data encoding using trees formed with logic gates are described which lead to spatial compression of image data. Data encoding is achieved using a five-level wavelet transform, such as the Haar or the 2/10 transform. A dual transform engine is used, the first and engine being used for the first part of the first-level transform, the second part of the first-level transform and the subsequent-level transforms being performed by the second transform engine within a time interval which is less than or equal to the time taken by the first transform engine to effect the part-transform. Each bit plane of the resulting coefficients is then encoded by forming a tree structure from the bits and OR logical combinations thereof. Redundant data are removed from the resulting tree structure, and further data can be removed by using a predetermined compression profile.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: March 26, 2019
    Assignee: RGB SYSTEMS, INC.
    Inventor: Peter Lionel Smith
  • Patent number: 10051288
    Abstract: Methods of data encoding using trees formed with logic gates are described which lead to spatial compression of image data. Data encoding is achieved using a five-level wavelet transform, such as the Haar or the 2/10 transform. A dual transform engine is used, the first and engine being used for the first part of the first-level transform, the second part of the first-level transform and the subsequent-level transforms being performed by the second transform engine within a time interval which is less than or equal to the time taken by the first transform engine to effect the part-transform. Each bit plane of the resulting coefficients is then encoded by forming a tree structure from the bits and OR logical combinations thereof. Redundant data are removed from the resulting tree structure, and further data can be removed by using a predetermined compression profile.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: August 14, 2018
    Assignee: RGB SYSTEMS, INC.
    Inventor: Peter Lionel Smith
  • Patent number: 10038411
    Abstract: A Class D amplifier is described herein that includes an outer loop, an inner loop, and a notch filter. The notch filter can be located between an output of the outer loop and an input of the inner loop. Alternatively or in addition, the notch filter can be located within the outer loop of the Class D amplifier. Ripple content can initially be present at an input to the inner loop of the Class D amplifier, causing nonlinearity in the inner loop and distortion in the audio output signal. The notch filter can filter the ripple content at the input to the inner loop, thereby reducing the nonlinearity present in the inner loop and the distortion in the audio output signal.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: July 31, 2018
    Assignee: RGB Systems, Inc.
    Inventor: Eric Mendenhall
  • Patent number: 9992252
    Abstract: The present invention is a method and apparatus for adaptively compressing and transmitting streaming video, preferably implemented in hardware as part of a codec, that adaptively applies a variable rate of compression to images in a video stream to optimize the quality attainable for a given transport bandwidth. In one or more embodiments, image frames from the video stream are divided into blocks, and a variable compression ratio compression engine compresses the blocks for transmission over a network. Depending on their compressed sizes, one or more of the compressed blocks are packaged into fixed size data packets for transmission over a network. The data packets are fed into a packet buffer. A packet servo releases packets from the buffer to achieve a desired transport data rate. The amount of compression applied by the compression engine is controlled based on the number of packets in the buffer.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: June 5, 2018
    Assignee: RGB SYSTEMS, INC.
    Inventor: Peter Lionel Smith
  • Patent number: 9973158
    Abstract: A power supply for use with Class D amplifiers in energy efficient applications is described herein. The power supply reduces the effects of off side charging and improves cross regulation. The topology of the power supply can be designed to minimize quiescent mode losses through resonant switching of some or all active switches. Additionally, the power supply can be implemented without external resonant inductors, the power supply can be implemented with smaller capacitors that have longer lifetime ratings, the switching losses present in a power factor correction stage of the power supply can be reduced, and/or a modified power factor correction choke can be utilized to reduce energy loss.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: May 15, 2018
    Assignee: RGB Systems, Inc.
    Inventor: Eric Mendenhall
  • Patent number: 9930364
    Abstract: Methods of data encoding using trees formed with logic gates are described which lead to spatial compression of image data. Data encoding is achieved using a five-level wavelet transform, such as the Haar or the 2/10 transform. A dual transform engine is used, the first and engine being used for the first part of the first-level transform, the second part of the first-level transform and the subsequent-level transforms being performed by the second transform engine within a time interval which is less than or equal to the time taken by the first transform engine to effect the part-transform. Each bit plane of the resulting coefficients is then encoded by forming a tree structure from the bits and OR logical combinations thereof. Redundant data are removed from the resulting tree structure, and further data can be removed by using a predetermined compression profile.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: March 27, 2018
    Assignee: RGB Systems, Inc.
    Inventor: Peter Lionel Smith
  • Patent number: 9924199
    Abstract: Methods of data encoding using trees formed with logic gates are described which lead to spatial compression of image data. Data encoding is achieved using a five-level wavelet transform, such as the Haar or the 2/10 transform. A dual transform engine is used, the first and engine being used for the first part of the first-level transform, the second part of the first-level transform and the subsequent-level transforms being performed by the second transform engine within a time interval which is less than or equal to the time taken by the first transform engine to effect the part-transform. Each bit plane of the resulting coefficients is then encoded by forming a tree structure from the bits and OR logical combinations thereof. Redundant data are removed from the resulting tree structure, and further data can be removed by using a predetermined compression profile.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: March 20, 2018
    Assignee: RGB SYSTEMS, INC.
    Inventor: Peter Lionel Smith
  • Patent number: 9877580
    Abstract: The present invention is a ceiling-mountable enclosure comprising a support frame, a lightweight inner enclosure, and a back box configured for installation in a suspended ceiling. The apparatus of the present invention includes a removable device door configured to be mounted to the support frame. Electrical and signal wires are routed through conduit access plates provided at the back box. Electrical or other equipment is mounted to a removable device door. The removable device door with mounted equipment is attached to the support frame, then rotated upwards to fit flush with the ceiling and fastened to the support frame. A variety of power receptacles are provided that are configured to be mounted to either the back box, the inner enclosure, or the removable device door. The enclosure includes a cooling system comprising an electrically powered fan and air ducts integrated into the inner enclosure.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: January 30, 2018
    Assignee: RGB Systems, Inc.
    Inventors: William C Stewart, Jr., Michael Hudson, Dale Vipatapalin, Tuan Tran, Andrew C Edwards
  • Patent number: 9434574
    Abstract: A cable retractor is provided. In accordance with at least one embodiment, the cable retractor is articulate, comprising an articulate housing which comprises a cable stop housing pivotably coupled to a pulley housing. In accordance with at least one embodiment, the cable retractor also comprises a first pulley assembly coupled to the pulley housing, an end cap coupled to the pulley housing, a spring coupled to the end cap, and a second pulley assembly coupled to the spring. In accordance with at least one embodiment, the first pulley assembly and the second pulley assembly are disposed within the pulley housing. In accordance with at least one embodiment, a cable stop assembly is coupled to the cable stop housing. In accordance with at least one embodiment, the cable retractor is configured to be mountable to a cable access enclosure in a plurality of orientations.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: September 6, 2016
    Assignee: RGB Systems, Inc.
    Inventors: Matthew Soper, Craig Fitzpatrick
  • Patent number: 9352932
    Abstract: The present invention is a speed control for a cable retractor. The cable retractor with which the speed control is used comprises a pulley that engages a cable that may be extended and retracted. A friction element configured to adjustably contact the cable adjacent to the pulley is attached to a movable linkage. The movement of the linkage is constrained to move along a predetermined path such that movement of the linkage along the path alters the distance between the friction element and the pulley. In one or more embodiments a cantilevered spring is attached to the linkage. An adjustable control, for example a thumbscrew, is configured to move the spring in relation to the linkage in a manner that alters the position of the friction element with respect to the cable and/or the pressure exerted by the friction element on the cable.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: May 31, 2016
    Assignee: RGB Systems, Inc.
    Inventor: Matthew Soper
  • Patent number: 9204170
    Abstract: Methods of spatial compression of image data using trees formed with logic gates are described. Data encoding is achieved using a five-level wavelet transform, such as the Haar or 2/10 transforms. A dual transform engine is used, the first engine being used for the first transform, and the subsequent transforms being performed by the second engine. Each bit plane of the resulting coefficients is then encoded by forming a tree structure from the bits and logical OR combinations thereof. Redundant data are removed. Further data can be removed with a predetermined compression profile. The resulting blocks of compressed data are of variable length and are packaged with sync and index words for transmission so that the location and identity of the transformed data blocks can be determined.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: December 1, 2015
    Assignee: RGB Systems, Inc.
    Inventor: Peter Lionel Smith
  • Patent number: 9065408
    Abstract: A simplified VCA circuit is presented. The VCA of the present invention uses fewer components and is less complex than prior art OTA-based VCAs. Further, the VCA of the present invention has improved total harmonic distortion (THD) and DC offset characteristics as compared to prior art VCAs. The VCA may be used to prevent clipping with the addition of clipping detection circuitry.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: June 23, 2015
    Assignee: RGB Systems, Inc.
    Inventors: Eric Mendenhall, Jared Huntington
  • Patent number: D734729
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: July 21, 2015
    Assignee: RGB Systems, Inc.
    Inventors: Robert M. Chaloupecky, Kate N. Gentle, Jaysun Stockdell-Giesler, David H. Libman
  • Patent number: D755783
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: May 10, 2016
    Assignee: RGB Systems, Inc.
    Inventors: Xuyao Shi, Kate N. Gentle, Jaysun Stockdell-Giesler, David H. Libman, J. Weldon Gammon, Deborah M. Hinzman
  • Patent number: D850440
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: June 4, 2019
    Assignee: RGB Systems, Inc.
    Inventors: Kate N. Gentle, John Weldon Gammon, David H. Libman
  • Patent number: D854429
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: July 23, 2019
    Assignee: RGB Systems, Inc.
    Inventors: Kate N. Gentle, Deborah M. Hinzman, David H. Libman, Andrew P. Belk
  • Patent number: D865709
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: November 5, 2019
    Assignee: RGB Systems, Inc.
    Inventors: Kate N. Gentle, Andrew P. Belk, Angelo Anthony Terracina, William C. Stewart, Jr.
  • Patent number: D874950
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: February 11, 2020
    Assignee: RGB Systems, Inc.
    Inventors: Kate N. Gentle, Deborah M. Hinzman, David H. Libman, Andrew P. Belk